The present invention relates to a charging/discharging device for a secondary battery, and more particularly, to a charging/discharging device comprising a device for measuring a temperature of a secondary battery and a cooling fan for cooling a secondary battery according to the temperature measured by the device .
[2]
This application is an application for priority claiming the Republic of Korea Patent Application No. 10-2018-0167882 filed on December 21, 2018, and all contents disclosed in the specification and drawings of the application are incorporated herein by reference.
background
[3]
As technology development and demand for mobile devices, electric vehicles, hybrid vehicles, power storage devices (ESS), and uninterruptible power supply (UPS) increase, the demand for secondary batteries as an energy source is rapidly increasing, and accordingly, to meet various needs A lot of research on rechargeable batteries that can do this is in progress.
[4]
Since the secondary battery is assembled in a discharged state, after assembling the secondary battery, the secondary battery must be charged to activate the secondary battery to function as a battery. Therefore, after the secondary battery assembling process, an evaluation process including a formation process of charging and discharging to give excellent charging and discharging characteristics to the assembled secondary battery, and a capacity test for checking whether the charging and discharging capacity is sufficient This is done.
[5]
In the chemical conversion process and the capacity test, the charging/discharging operation of the secondary battery is performed, for example, by using the device shown in FIG. 1 .
[6]
Referring to FIG. 1 , a plurality of secondary batteries 1 are arranged on a tray 3 , and a pin (not shown) capable of individually applying power to each secondary battery 1 is brought into contact with each other. charging and discharging at once.
[7]
When charging and discharging of the secondary battery 1 proceeds, the temperature of the secondary battery 1 rises. When the temperature of the secondary battery 1 rises, the charging/discharging operation cannot be smoothly performed. Therefore, an appropriate cooling means must be provided when charging and discharging, and the tray 3 is usually put in a chamber (not shown) and a cooling action is performed on the plurality of secondary batteries 1 through the cooling fan 5 as a cooling device. enabling this to be done.
[8]
A secondary battery with a defect during initial charging and discharging may be different from a normal battery in temperature behavior, etc. Therefore, a defective secondary battery can be identified by measuring the temperature. Conventionally, a thermocouple 7 is used for temperature measurement.
[9]
However, a temperature deviation between the secondary batteries 1 may occur due to heat generated by the secondary batteries 1 during charging. In the case of a lithium secondary battery, an SEI (Solid Electrolyte Interface) film is formed by initial charging, and is charged by applying a low current of 0.1 C-rate usually. However, in the case of high-rate charging at a higher C-rate to shorten the process time, there is a problem in that the temperature deviation between the secondary batteries 1 increases due to increased heat generation. Depending on the opening and closing of the door of the chamber in which the tray 3 is placed, a temperature deviation may occur due to the outside air. However, in many cases, the current cooling degree by the cooling fan 5 is insufficient to reduce the temperature deviation between the secondary batteries 1 . In addition, the cooling fan 5 currently used for temperature control operates with the same output regardless of the actual temperature of the secondary battery 1 , so it does not help to reduce the temperature deviation.
[10]
The temperature deviation between the secondary batteries 1 causes a change in resistance and voltage, which causes an increase in the capacity inspection deviation. To compensate for the difference between the set temperature of the cooling fan (5) and the actual temperature by measuring the temperature using the thermocouple (7), the charge/discharge capacity is calculated using a temperature-dependent correction formula, but the existing thermocouple (7) is not measuring the temperature of each secondary battery 1, but measuring the ambient temperature in the tray 3, there is a limit that the temperature deviation between the secondary batteries 1 in the tray 3 cannot be reflected at all.
DETAILED DESCRIPTION OF THE INVENTION
technical challenge
[11]
The present invention was devised to solve the above problems, and measures the temperature of each secondary battery so as to take into account the temperature deviation between secondary batteries that may occur during charging and discharging in the formation process and capacity test after the secondary battery assembly process. An object of the present invention is to provide a charging/discharging device including a temperature measuring device suitable for this purpose and a cooling fan for cooling secondary batteries by utilizing temperature information using the temperature measuring device.
[12]
Other objects and advantages of the present invention may be understood by the following description, and will be more clearly understood by the examples of the present invention. Moreover, it will be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.
means of solving the problem
[13]
A charging/discharging device according to the present invention for achieving the above object is provided with respect to a plurality of secondary batteries arranged to be spaced apart from each other in an X-axis direction in an upright state with one side facing down in the Y-axis direction, at least one of the secondary batteries. a temperature measuring device for measuring one temperature; a tray for arranging and accommodating a plurality of secondary batteries to be spaced apart from each other in the X-axis direction in an upright state with one side facing down in the Y-axis direction; a charging/discharging probe and a power supply device capable of individually applying power to the secondary batteries; and a plurality of cooling fans installed to cool the secondary batteries, each cooling fan having a wind direction and output individually controlled according to temperature information according to a position in each secondary battery for each secondary battery measured by the temperature measuring device. and a non-contact temperature sensor unit which is inserted into the space between the secondary batteries and measures the temperature of the facing secondary batteries in a non-contact manner; and a Z-axis transfer mechanism for elevating and lowering the non-contact temperature sensor unit in the Z-axis direction, inserting the secondary batteries into the spaced space from a position spaced from the secondary batteries upwardly in the Z-axis direction to the lower side, and withdrawing in the opposite direction.
[14]
In the present invention, the cooling fan is installed on the upper portion of the tray in row and column directions to blow air to the secondary batteries directly below, but the wind direction may be controlled by adjusting an angle with respect to a horizontal plane.
[15]
In the present invention, according to the temperature information according to the position in each secondary battery for each secondary battery measured by the temperature measuring device, the cooling fan intensively cools a part having a higher temperature to reduce the temperature deviation from other parts. desirable.
[16]
In the present invention, it is preferable that the temperature measurement by the temperature measuring device and the wind direction and output control of the cooling fan are interlocked in real time.
[17]
In one embodiment, the temperature measuring mechanism further includes a Y-axis transfer mechanism for mounting the Z-axis transfer mechanism and transfer along the Y-axis direction. The non-contact temperature sensor unit may include a single temperature sensor, or may include multiple temperature sensors arranged along the Z-axis with a length corresponding to one side of the secondary batteries in the Z-axis direction.
[18]
In another embodiment, the temperature measuring mechanism further includes an X-axis transport mechanism for mounting the Y-axis transport mechanism and transporting it along the X-axis direction. Here, the non-contact temperature sensor unit may include a single temperature sensor, or may include multiple temperature sensors arranged along the Z-axis with a length corresponding to one side of the secondary batteries in the Z-axis direction.
[19]
In another embodiment, the temperature measuring mechanism further includes an X-axis transport mechanism for mounting the Z-axis transport mechanism and transporting it along the X-axis direction. The non-contact temperature sensor unit may include multiple temperature sensors arranged in the Y-axis direction with a length corresponding to one side of the secondary batteries in the Y-axis direction, or a plate member having an area corresponding to the area on the YZ plane of the secondary batteries, and the The plate member may include multiple temperature sensors arranged along the Y-axis and the Z-axis.
[20]
In another embodiment, the non-contact temperature sensor unit further includes a temperature sensor for measuring the ambient temperature.
[21]
As various modifications, in the charging/discharging device of the present invention, the non-contact temperature sensor unit and the Z-axis transfer mechanism may be provided in a number corresponding to the number of the secondary batteries. In this case, the X-axis feed mechanism is not required.
[22]
As various modifications, the temperature measuring mechanism may further include an X-axis transfer mechanism for carrying the Z-axis transfer mechanism along the X-axis direction without a Y-axis transfer mechanism. In this case, the non-contact temperature sensor unit may include multiple temperature sensors arranged along the Y-axis direction with a length corresponding to one side of the Y-axis direction of the secondary batteries, or a plate having an area corresponding to the area on the YZ plane of the secondary batteries. The member and the plate member may include multiple temperature sensors arranged along Y-axis and Z-axis.
[23]
As various modifications, in the temperature measuring mechanism, the Y-axis transfer mechanism includes a Y-axis LM guide in the longitudinal direction at a position spaced upward in the Z-axis direction to be parallel to the other side of the secondary batteries in the Y-axis direction. a Y-axis slide block provided with an installed Y-axis guide beam and a Y-axis LM slider that engages with the Y-axis LM guide and slides in the longitudinal direction thereof to reciprocate in the longitudinal direction of the Y-axis guide beam, wherein the Z The shaft transfer mechanism is connected to the Y-axis slide block.
[24]
In addition, the Z-axis transfer mechanism is a Z-axis guide beam that is erected at a right angle to the Y-axis guide beam and has a Z-axis LM guide installed in its longitudinal direction, and the Z-axis LM guide engages with the Z-axis LM guide and slides in the longitudinal direction. A shaft LM slider is provided to include a Z-axis slide block that reciprocates in the longitudinal direction of the Z-axis guide beam, or includes one or more X-shaped links in which two link members are rotatably cross-coupled It may be a link unit.
[25]
In an embodiment in which the temperature measuring mechanism further includes the X-axis transfer mechanism together with the Y-axis transfer mechanism, the X-axis transfer mechanism forms a right angle with the Y-axis guide beam on the XY plane and the X-axis LM in its longitudinal direction A pair of X-axis guide beams parallel to each other on which guides are installed and an X-axis LM slider that engages with the X-axis LM guide and slides in the longitudinal direction at both ends of the Y-axis guide beam, The X-axis LM slider may be connected to both ends.
[26]
In an embodiment in which the temperature measuring mechanism further includes the X-axis transfer mechanism without a Y-axis transfer mechanism, the X-axis transfer mechanism is spaced upward in the Z-axis direction perpendicular to the other side of the secondary batteries in the Y-axis direction and the XY plane. A pair of X-axis guide beams parallel to each other in which X-axis LM guides are installed in the longitudinal direction thereof, and an X-axis LM slider that engages with the X-axis LM guides and slides in the longitudinal direction are provided, so that the X-axis guide beams are provided. It may include an X-axis slide block reciprocating in the longitudinal direction, and the Z-axis transfer mechanism may be connected to the X-axis slide block.
[27]
Even at this time, the Z-axis feeding mechanism is engaged with the Z-axis LM guide and the Z-axis guide beam, which is erected at a right angle to the X-axis guide beam and provided with the Z-axis LM guide in the longitudinal direction thereof, and the Z sliding in the longitudinal direction. A link unit comprising a Z-axis slide block provided with an axis LM slider and reciprocating in the longitudinal direction of the Z-axis guide beam, or one or more X-shaped links in which two link members are rotatably cross-coupled can
Effects of the Invention
[28]
According to the present invention, the temperature of each secondary battery can be measured for a plurality of secondary batteries. Therefore, for example, the temperature of each secondary battery may be measured in the formation process and the capacity test after the secondary battery assembly process. Since it is possible to obtain the temperature deviation between the secondary batteries, it is possible to take this temperature deviation into account when calculating the capacity. Since the temperature is measured in units of secondary batteries rather than trays, the accuracy of temperature correction during capacity inspection is improved.
[29]
According to the present invention, it is possible to quickly measure the temperature without affecting the secondary battery in a non-contact manner using the non-contact temperature sensor unit.
[30]
According to the present invention, there is provided a movable temperature measuring device that basically transfers the non-contact temperature sensor unit through the Z-axis elevating and lowering by the Z-axis feeding mechanism. If the Y-axis transfer mechanism and/or the X-axis transfer mechanism is further included here, the number of non-contact temperature sensors required for temperature measurement of each secondary battery can be reduced. As described above, the mobile type enables temperature measurement with as few non-contact temperature sensors as possible for a plurality of secondary batteries.
[31]
According to the present invention, since it is possible to measure the temperature of several places of the secondary battery using a single sensor or multiple sensors, it is possible to obtain data for research by recording the measured temperature and making it a database (DB).
[32]
According to the present invention, the temperature of each secondary battery in the tray is measured using the non-contact temperature sensor unit, and the wind direction and output of the cooling fan can be adjusted in response to the temperature of the secondary battery continuously changing during charging and discharging based on the temperature information. have. Thereby, there is an effect that it is possible to realize charging and discharging of uniform quality by improving the temperature deviation.
Brief description of the drawing
[33]
The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical spirit of the present invention together with the detailed description of the present invention to be described later, so the present invention is described in such drawings should not be construed as being limited only to
[34]
1 shows a conventional device for charging and discharging a secondary battery.
[35]
2 shows a charging/discharging device according to a first embodiment of the present invention.
[36]
3 shows a temperature measuring mechanism included in the charging/discharging device according to the first embodiment of the present invention.
[37]
4 and 5 are diagrams for explaining a method of measuring a temperature for one secondary battery using a temperature measuring device included in the charging/discharging device according to the first embodiment of the present invention.
[38]
6 is a view illustrating a cooling fan in a state of use of the charging/discharging device according to the first embodiment of the present invention.
[39]
7 shows a temperature measuring mechanism that may be included in the charging/discharging device according to the second embodiment of the present invention.
[40]
8 shows a temperature measuring mechanism that may be included in the charging/discharging device according to the third embodiment of the present invention.
[41]
9 shows a temperature measuring mechanism that can be included in the charging/discharging device according to the fourth embodiment of the present invention.
[42]
FIG. 10 is a diagram for explaining a method of measuring a temperature of one secondary battery using a temperature measuring device included in a charging/discharging device according to a fourth embodiment of the present invention.
[43]
11 shows a temperature measuring mechanism that may be included in the charging/discharging device according to the fifth embodiment of the present invention.
[44]
12 is a view for explaining a method of measuring a temperature of one secondary battery using a temperature measuring device included in the charging/discharging device according to the fifth embodiment of the present invention.
[45]
13 shows a temperature measuring mechanism that may be included in the charging/discharging device according to the sixth embodiment of the present invention.
[46]
14 is a view for explaining a method of measuring a temperature of one secondary battery using a temperature measuring device included in the charging/discharging device according to the sixth embodiment of the present invention.
[47]
Fig. 15 shows an embodiment of a temperature measuring device further comprising an ambient temperature measuring sensor in addition to the non-contact temperature sensor.
[48]
16 is a modified example of the charging/discharging device according to the first embodiment of the present invention, and shows an example in which the installation position of the cooling fan is changed.
Modes for carrying out the invention
[49]
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the embodiments according to the present invention may be modified in various other forms, and the scope of the present invention should not be construed as being limited to the following examples. The embodiments of the present invention are provided to more completely explain the present invention to those of ordinary skill in the art.
[50]
The terms or words used in the present specification and claims are not to be construed as being limited to their ordinary or dictionary meanings, and the inventor may properly define the concept of the term in order to best describe his invention. Based on the principle that there is, it should be interpreted as meaning and concept consistent with the technical idea of ​​the present invention. Accordingly, the configuration shown in the embodiments and drawings described in the present specification is only the most preferred embodiment of the present invention and does not represent all of the technical spirit of the present invention, so at the time of the present application, various It should be understood that there may be equivalents and variations.
[51]
In addition, when it is determined that a detailed description of a known configuration or function related to the present invention may obscure the gist of the present invention, the detailed description thereof will be omitted. The shapes and the like of elements in the drawings are exaggerated to emphasize a clearer description, and the same reference numerals indicate the same elements.
[52]
Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated. In addition, throughout the specification, when a part is "connected" with another part, it is not only "directly connected" but also "indirectly connected" with another element interposed therebetween. include
[53]
The present invention basically provides a temperature measuring device for measuring the temperature of each secondary battery using a non-contact temperature sensor for a plurality of secondary batteries, and temperature information according to the position in each secondary battery for each secondary battery measured by the temperature measuring device Accordingly, a charging/discharging device including a cooling fan whose wind direction and output is individually controlled is proposed. The non-contact temperature sensor is provided in the non-contact temperature sensor unit, and since the non-contact temperature sensor unit is transported through the Z-axis elevation by the Z-axis transport mechanism, the temperature measuring device included in the charging/discharging device according to the present invention is a movable temperature measuring device. can be named
[54]
According to the present invention, it is possible to quickly measure the temperature without affecting the secondary battery in a non-contact manner using the non-contact temperature sensor unit. Examples of the non-contact temperature sensor include an infrared sensor. The number of non-contact temperature sensors can be increased or decreased as needed. That is, the number of temperature sensors for temperature measurement may be one or more.
[55]
In other words, it may be a single temperature sensor or multiple temperature sensors. In each case, it may further include a Y-axis transfer mechanism and/or an X-axis transfer mechanism for more efficient driving. That is, a two-axis transfer mechanism including a Z-axis transfer mechanism and a Y-axis transfer mechanism, a two-axis transfer mechanism including a Z-axis transfer mechanism and an X-axis transfer mechanism, or a Z-axis transfer mechanism and a Y-axis transfer mechanism and an X-axis transfer mechanism A 3-axis transfer mechanism including all mechanisms is possible.
[56]
First, the first and second embodiments are charging and discharging devices including a temperature measuring mechanism using a single temperature sensor, and the X-axis transfer mechanism is suitable for this single temperature sensor to measure the temperature of each secondary battery for a plurality of secondary batteries. , including a three-axis transfer mechanism including a Y-axis transfer mechanism and a Z-axis transfer mechanism. The third embodiment is a case in which a single temperature sensor includes a temperature measuring mechanism provided with several, and the X-axis transfer mechanism can be omitted. The fourth to sixth embodiments are charging/discharging devices including a temperature measuring device using multiple temperature sensors. Among them, the fifth embodiment is a case where the Y-axis transfer mechanism can be omitted according to the axial arrangement of the multi-temperature sensor, and the sixth embodiment is a case where the X-axis transfer mechanism can also be omitted because multiple temperature sensors are provided. am. It will be described in detail below.
[57]
2 shows a charging/discharging device according to a first embodiment of the present invention. This embodiment includes a temperature measuring device configured to allow the non-contact temperature sensor to move in three axes, and a cooling fan whose wind direction and output are individually controlled according to the temperature information measured by the temperature measuring device.
[58]
First, the charging/discharging device 300 includes a tray 30 for arranging and accommodating a plurality of secondary batteries 10 to be spaced apart from each other along the X-axis direction in an upright state with one side 11 in the Y-axis direction facing down. . And, it includes a temperature measuring device (T1). A charging/discharging probe 340 and a power supply device 350 capable of individually applying power to the secondary batteries 10 accommodated in the tray 30 are also included. A plurality of cooling fans 50 are included in the upper portion of the tray 30 .
[59]
The tray 30 has a substantially rectangular parallelepiped structure and has a space for arranging the secondary batteries 10 therein, and the non-contact temperature sensor unit 200 of the temperature measuring device T1 is spaced apart between the secondary batteries 10 . The upper portion of the tray 30 is opened so that it can be inserted, transferred, and withdrawn into the space S. The charge/discharge probe 340 is connected to the electrode leads 20 of the secondary batteries 10 to apply a current from the power supply 350 . For the convenience of connection, for example, a slot (not shown) in which the charge/discharge probe 340 can be inserted and detached may be formed on the side where the electrode leads 20 of the secondary batteries 10 are placed in the tray 30 . However, the present invention is not limited to the structure of the tray 30 and the specific connection structure of the charge/discharge probe 340 .
[60]
The secondary batteries 10 are received and arranged in the tray 30 . The drawings are for illustrative purposes, and the actual number of secondary batteries per tray may be different from the drawings.
[61]
Although the temperature measuring device T1 will be described in more detail below, the non-contact temperature sensor is configured to measure the temperature while moving in three axes, and the temperature is measured by each secondary battery 10 and by location within the secondary battery 10. information can be obtained.
[62]
A plurality of cooling fans 50 are included in the upper portion of the tray 30 . The cooling fan 50 may be installed in a predetermined row and column direction. Although the drawing shows a 3×3 matrix as an example, the present invention is not limited to this arrangement. In the cooling fan 50 , the wind direction and output are individually controlled according to the temperature information according to the position in each secondary battery 10 for each secondary battery 10 measured by the temperature measuring device T1 .
[63]
When the charging/discharging device 300 is used, the temperature of each secondary battery 10 may be measured through the temperature measuring device T1 while charging and discharging the secondary batteries 10 in the tray 30 . First, since the temperature deviation between the secondary batteries 10 can be obtained, the temperature deviation can be taken into account when calculating the capacity. Since the temperature is measured in units of the secondary battery 10 rather than in units of the tray 30, the accuracy of temperature correction during capacity testing is improved. And, by adjusting the wind direction and output of each cooling fan 50 according to the temperature information, it becomes possible to cool the secondary batteries 10 while reducing the temperature deviation.
[64]
3 shows a temperature measuring device T1 included in the charging/discharging device according to the first embodiment of the present invention. 4 and 5 illustrate a method of measuring the temperature of one secondary battery 10 using the temperature measuring device T1 included in the charging/discharging device 300 according to the first embodiment of the present invention. drawings for
[65]
Referring to FIG. 3 , the temperature measuring mechanism T1 includes a three-axis transfer mechanism 100 and a non-contact temperature sensor unit 200 . The three-axis transfer mechanism 100 includes an X-axis transfer mechanism 110 , a Y-axis transfer mechanism 120 , and a Z-axis transfer mechanism 130 . The three-axis transfer mechanism 100 may be formed of a lightweight, durable aluminum material or stainless steel, but the present invention is not limited or limited by the material and characteristics thereof. The non-contact temperature sensor unit 200 is connected to the Z-axis transfer mechanism 130 . The non-contact temperature sensor unit 200 is inserted into the space S between the secondary batteries 10 by the 3-axis transfer mechanism 100 to measure the temperature of the facing secondary batteries 10 in a non-contact manner.
[66]
The X-axis transfer mechanism 110 is a pair of X-axis guide beams parallel to each other at a spaced apart position from the Y-axis direction other side 12 of the secondary batteries 10 and perpendicular to the XY plane, upward in the Z-axis direction ( 111). For example, a pair of X-axis guide beams 111 are provided above the secondary batteries 10 to be spaced apart from each other by more than the length of one side 11 in the Y-axis direction of the secondary battery 10 along the Y-axis direction of the secondary battery 10 . do. The X-axis guide beam 111 is provided with an X-axis LM guide 112 in its longitudinal direction. The X-axis transfer mechanism 110 also includes an X-axis LM slider 113 that engages with the X-axis LM guide 112 and slides in the longitudinal direction thereof.
[67]
The Y-axis transfer mechanism 120 is perpendicular to the X-axis guide beam 111 on the XY plane, that is, parallel to the other side 12 in the Y-axis direction of the secondary batteries 10, upward in the Z-axis direction, the secondary A Y-axis guide beam 121 is included at a position spaced apart from the cells 10 . The Y-axis guide beam 121 may be connected between a pair of X-axis guide beams 111 in a substantially bridge structure. The Y-axis guide beam 121 is provided with a Y-axis LM guide 122 in its longitudinal direction. Both ends of the Y-axis guide beam 121 are connected to the X-axis LM slider 113 . The Y-axis transfer mechanism 120 is provided with a Y-axis LM slider that engages with the Y-axis LM guide 122 and slides in its longitudinal direction, and a Y-axis slide block that reciprocates in the longitudinal direction of the Y-axis guide beam 121 ( 124).
[68]
The Z-axis transfer mechanism 130 may be connected to the Y-axis slide block 124 . In this embodiment, the Z-axis transfer mechanism 130 is a link unit including one or more X-shaped links 132 to which two link members 131 are rotatably cross-coupled. The link unit may also be called a scissor arm or a scissor lift. The non-contact temperature sensor unit 200 is connected to the lower end of the Z-axis transfer mechanism 130 , and the Z-axis transfer mechanism 130 raises and lowers the non-contact temperature sensor unit 200 in the Z-axis direction. In particular, the Z-axis transfer mechanism 130 inserts the non-contact temperature sensor unit 200 into the separation space S from a position spaced upward from the secondary batteries 10 in the Z-axis direction to the lower side, and withdraws it in the opposite direction to the insertion direction. do.
[69]
In this way, the Y-axis transport mechanism 120 is mounted with the Z-axis transport mechanism 130 and transported along the Y-axis direction, and the X-axis transport mechanism 110 is mounted with the Y-axis transport mechanism 120 in the X-axis direction. transported along The non-contact temperature sensor unit 200 is connected to the Z-axis transfer mechanism 130 , and the Z-axis transfer mechanism 130 raises and lowers the non-contact temperature sensor unit 200 in the Z-axis direction. Therefore, the non-contact temperature sensor unit 200 is capable of 3-axis transport along the X-axis, Y-axis, and Z-axis.
[70]
A single temperature sensor 202 is mounted on the non-contact temperature sensor unit 200 . A method of measuring the temperature of the plurality of secondary batteries 10 using the non-contact temperature sensor unit 200 may be performed as follows.
[71]
The non-contact temperature sensor unit 200 measures the temperature from one side in the X-axis direction. That is, the measurement is started from the outermost secondary battery among the plurality of arranged secondary batteries 10 .
[72]
Referring to FIG. 4 , the secondary battery 10 is inserted from one side YS1 in the Y-axis direction near the other side 12 in the Y-axis direction to the lower side by the Z-axis transfer mechanism 130 and enters the separation space S. , is transferred to the other side YS2 in the Y-axis direction by the Y-axis transfer mechanism 120, and then is further transferred downward along the Z-axis direction by the Z-axis transfer mechanism 130 from the other side YS2 in the Y-axis direction. It is transferred to one side (YS1) in the Y-axis direction by the Y-axis transfer mechanism. By repeating this process at least once, the non-contact temperature sensor unit 200 is inserted to the vicinity of one side 11 in the Y-axis direction of the secondary battery 10 facing in the space S, and then pulled out upward along the Z-axis direction. and to sequentially measure the temperature of several places with respect to the area on the YZ plane of the secondary battery 10 facing while being transported in the separation space (S). On the other hand, in order to sequentially measure the temperature of several places with respect to the area on the YZ plane of the facing secondary battery 10, in addition to the zigzag method in the YZ plane as shown and described in FIG. 4, as shown in FIG. It doesn't matter in any order along the direction.
[73]
When the temperature measurement of the outermost secondary battery is finished in this way, the Y-axis transfer mechanism 120 is transferred to the next secondary battery 10 along the X-axis direction by the X-axis transfer mechanism 110 for temperature measurement. . By the transfer of the Y-axis transfer mechanism 120 , the Z-axis transfer mechanism 130 and the non-contact temperature sensor unit 200 are also transferred together. At the new transferred position, the temperature of several places is sequentially measured with respect to the area on the YZ plane of the facing secondary battery 10 by the same temperature measurement method as in FIGS. 4 to 5 . In this way, the non-contact temperature sensor unit 200 measures the temperature of all secondary batteries 10 from one side in the X-axis direction to the other side, and the Z-axis transfer mechanism 130 moves the Y-axis transfer mechanism 120 and the X-axis transfer. While being transported by the device 110 , the temperature measurement of the secondary batteries 10 is sequentially performed for each secondary battery 10 . That is, the non-contact temperature sensor unit 200 including a single temperature sensor 202 goes down between the secondary batteries 10 and moves up, down, left and right, and after measuring the temperature, it rises again and moves to repeat the temperature measurement of the next secondary battery 10 it is composition.
[74]
In this embodiment, the three-axis transfer mechanism 100 has been described as an example as described above, but other configurations that enable reciprocating translational motion in each of the X-axis, Y-axis, and Z-axis directions are also possible. It can be utilized to implement (100). And in performing the reciprocating translational motion in each axial direction in the 3-axis transfer mechanism 100, a driving unit such as a linear motor included in the LM Guide and a control unit for controlling the movement of such a driving unit are naturally included even if not described in detail here. Those skilled in the art will know that there is. In addition, instead of using the LM Guide method, a 3-axis transfer mechanism 100 is implemented through a belt, bearing, ball nut, ball screw, and other various known means as a means for using and interlocking a numerically controlled orbit and a servo motor. It will be well known to those skilled in the art. In other words, the driving force required for the direction movement of the non-contact temperature sensor unit 200 may be provided using a driving means such as a linear motor, and other conventional motors such as a servo motor, a stepping motor, and a belt are used to provide the driving force It is also possible to In addition, by driving these motors according to the control signal of the control unit, it is possible to appropriately move the three-axis transfer mechanism 100 to proceed with a predetermined temperature measurement operation. And, as long as the structure is within the range where three-axis transfer is possible, the present invention is not limited or limited by the positional connection relationship, type and characteristics of each transfer mechanism constituting the three-axis transfer mechanism 100 . The present invention uses a temperature measuring device that measures all the temperatures of several secondary batteries by repeatedly performing a method of transferring the non-contact temperature sensor unit to enter between the secondary batteries to measure the temperature and then to exit each secondary battery,
[75]
As described above, according to this embodiment, the temperature is measured in units of the secondary batteries 10 in the tray 30 through the temperature measuring device T1 , and the non-contact temperature sensor unit 200 goes down between the secondary batteries 10 to measure the temperature. Then, the secondary battery 10 may be driven to repeat the temperature measurement.
[76]
Since the non-contact temperature sensor unit 200 is moved through the 3-axis transfer device 100 , the temperature of all the secondary batteries 10 in the tray 30 can be measured even with a single temperature sensor 202 . Accordingly, capacity correction can be performed in units of the secondary battery 10 instead of in units of the tray 30, thereby ensuring the accuracy of the capacity test. The temperature of the secondary battery 10 can be measured according to location and time, and the measured temperature information can be used as a DB when accumulatively stored.
[77]
6 is a view illustrating a cooling fan in a state of use of the charging/discharging device according to the first embodiment of the present invention.
[78]
As described with reference to FIG. 2 , the cooling fan 50 individually controls the wind direction and output according to the temperature information according to the position in each secondary battery 10 for each secondary battery 10 measured by the temperature measuring device T1 . do. Basically, the cooling fan 50 is based on blowing air to the secondary batteries 10 directly below, and the wind direction is controlled by adjusting the angle α with respect to the horizontal plane HP.
[79]
For example, as shown in FIG. 6 , “50a” for the cooling fans 50 located in the first row, “50b” for the cooling fans 50 located in the second row, and the cooling fan 50 located in the third row. In the case where they are referred to as “50c”, as a result of temperature measurement through the temperature measuring device T1 , if it is measured that the temperature of the left side of the secondary batteries 10 (eg, the side where the negative lead is located) is higher, the cooling fan 50 ) can be made to operate in a way that intensively cools the higher temperature part and reduces the temperature deviation from other parts.
[80]
Specifically, by adjusting the wind direction of the cooling fan 50a, the amount of air to the left of the secondary batteries 10 may be increased. By giving a positive angle α with respect to the horizontal plane HP, the wind of the cooling fan 50a can be sent to the left side of the secondary batteries 10, and thus the left side of the secondary batteries 10 can be more intensively Since it is possible to cool, it is possible to reduce the temperature deviation between the left and right sides of the secondary batteries 10 . When the temperature on the left side of the secondary batteries 10 is much higher than that on the right side, the cooling fan 50a as well as the cooling fan 50b adjust the wind direction to increase the air volume to the left side of the secondary batteries 10 and cool them more quickly. You can do it.
[81]
In addition to this, or separately, if the output of the cooling fan 50c cooling the right side of the secondary batteries 10 is reduced, the air volume of the corresponding part is reduced, thereby cooling the right side of the secondary batteries 10 less. Conversely, if the output of the cooling fan 50a cooling the left side of the secondary batteries 10 is increased, the air volume of the corresponding part may be increased to further cool the left side of the secondary batteries 10 .
[82]
As described above, the charging/discharging device 300 may reduce the temperature deviation of the secondary battery 10 by controlling and adjusting the wind direction and output of the cooling fan 50 .
[83]
In particular, the temperature of the secondary battery 10 tends to change according to the operation of the cooling fan 50 . Therefore, it is preferable to provide a control unit between the temperature measuring device T1 and the cooling fan 50 so that the temperature measurement by the temperature measuring device T1 and the wind direction and output control of the cooling fan are interlocked in real time. This control unit may be provided integrally with the control unit of the temperature measuring device (T1).
[84]
The temperature measuring device may be configured in various ways. The charging/discharging device according to the present invention may be implemented in various ways by configuring different types of temperature measuring devices. In addition to the temperature measuring device T1 described above, various temperature measuring devices described below may be included in the charging/discharging device according to the present invention.
[85]
7 shows a temperature measuring mechanism that may be included in the charging/discharging device according to the second embodiment of the present invention. The temperature measuring mechanism T2 is different from the first embodiment described with reference to FIGS. 2 to 6 only in the Z-axis transfer mechanism 140, and representatively describes another configuration capable of reciprocating translational motion in the Z-axis direction. could be an example. A repetitive description of the same or similar parts to the temperature measuring device T1 in the first embodiment will be omitted.
[86]
In FIG. 7 , the Z-axis transfer mechanism 140 is erected at a right angle to the Y-axis guide beam 121 and the Z-axis guide beam 141 on which the Z-axis LM guide 142 is installed in the longitudinal direction thereof, and the Z-axis A Z-axis LM slider that engages with the LM guide 142 and slides in its longitudinal direction is provided and includes a Z-axis slide block 143 that reciprocates in the longitudinal direction of the Z-axis guide beam 141 . In this way, in this embodiment, the reciprocating translational motions in the X-axis, Y-axis, and Z-axis directions are all implemented as a charging/discharging device including a temperature measuring mechanism T2 having a configuration including an LM guide and an LM slider.
[87]
On the other hand, in the first and second embodiments, the non-contact temperature sensor unit 200 and the Z-axis transfer mechanism 130 or 140 are provided with only one each in the temperature measuring mechanism T1 or T2. As a modification of these, a temperature measuring device in which the non-contact temperature sensor unit 200 and the Z-axis transfer mechanism 130 or 140 are provided in the number corresponding to the number of the secondary batteries 10 is also possible. In this case, it is not necessary to transfer the Z-axis transfer mechanism 130 in the X-axis direction in order to measure the temperature of all the secondary batteries 10 . Therefore, the X-axis transfer mechanism 110 as in the first and second embodiments may not be necessary. It is possible to include a structure for supporting the Y-axis transfer mechanism 120 instead of including the X-axis transfer mechanism 110 . For example, a charging/discharging device may be provided to include a temperature measuring device as shown in FIG. 8 .
[88]
8 shows a temperature measuring mechanism that may be included in the charging/discharging device according to the third embodiment of the present invention.
[89]
The temperature measuring device T3 shown in FIG. 8 includes a non-contact temperature sensor unit 200 including a single temperature sensor 202 and a Z-axis transfer mechanism 130 in a number corresponding to the number of secondary batteries 10 . will become
[90]
In the present embodiment, the non-contact temperature sensor unit 200 including a single temperature sensor 202 is lowered between the secondary batteries 10 for each non-contact temperature sensor unit 200 to each Z-axis transfer mechanism 130 and Y It is moved up and down and left and right by the axis transfer mechanism 120 , and it is possible to measure the temperature of all secondary batteries 10 in the order that they rise again after measuring the temperature, and it is necessary to transfer the Z-axis transfer mechanism 130 in the X-axis direction. there is no Since a single temperature sensor 202 is used in plurality as many as the number of secondary batteries 10 , the measurement time can be shortened.
[91]
Except for the point that the X-axis frame 110' is provided in the X-axis guide beam 111 of the X-axis feed mechanism 110 in the first embodiment in order to support the Y-axis feed mechanism 120, It is the same as that of the temperature measuring device T1 in the first embodiment. Although the X-axis frame 110 ′ is shown in a bar or rod shape like the X-axis guide beam 111 , it may be a wall-shaped upright member that is upright in the Z-axis direction, and is a bar or rod shape, but the Z-axis The structure may be further provided with a support for supporting in the direction. On the other hand, it is also possible to provide a Z-axis transfer mechanism 140 as in the second embodiment instead of the Z-axis transfer mechanism 130 as a modification of the temperature measuring mechanism (T3) included in the third embodiment.
[92]
9 shows a temperature measuring mechanism that is the same as in the first embodiment in that it includes a three-axis transfer mechanism, but has a difference in the non-contact temperature sensor unit 210 .
[93]
Referring to FIG. 9 , in the temperature measuring device T4 that may be included in the charging/discharging device of the fourth embodiment, the non-contact temperature sensor unit 210 has a length corresponding to one side 13 in the Z-axis direction of the secondary batteries 10 . The strip member 211 of (d1) and the strip member 211 include multiple temperature sensors 212 arranged along the Z-axis direction. The point including the three-axis transfer mechanism including the X-axis transfer mechanism 110 , the Y-axis transfer mechanism 120 and the Z-axis transfer mechanism 130 is the same as in the first embodiment, and the temperature measurement method is also the first Similar to the embodiment, since a plurality of sensors are used, the measurement time can be shortened.
[94]
The non-contact temperature sensor unit 210 measures the temperature from one side in the X-axis direction, and as the Z-axis transfer mechanism 130 is transferred by the X-axis transfer mechanism 110 , the temperature of the secondary batteries 10 is measured for each secondary battery 10 . done sequentially.
[95]
FIG. 10 is a view for explaining a method of measuring a temperature for one secondary battery using a temperature measuring device T4 included in the charging/discharging device according to the fourth embodiment of the present invention.
[96]
Referring to FIG. 10 , the non-contact temperature sensor unit 210 goes down between the secondary batteries 10 and is inserted in the Y-axis direction one side YS1 in the separation space S, and the Y-axis by the Y-axis transfer mechanism 120 . After being transferred to the other side (YS2), it is drawn out of the separation space (S), and the temperature of several places is sequentially measured for the area on the YZ plane of the secondary battery 10 facing while being transferred in the separation space (S) do.
[97]
On the other hand, as a modification of the fourth embodiment, it is also possible to have the Z-axis transfer mechanism 140 as in the second embodiment instead of the Z-axis transfer mechanism 130 . And, as in the third embodiment, as a modification of the fourth embodiment, a temperature measuring mechanism in which the Z-axis transfer mechanism 130 and the non-contact temperature sensor unit 210 are provided in the number corresponding to the number of the secondary batteries 10 is also possible. .
[98]
11 shows a temperature measuring device similar to the fourth embodiment but with a difference in the non-contact temperature sensor unit 220 .
[99]
In the temperature measuring device T5 that may be included in the charging/discharging device according to the fifth embodiment shown in FIG. 11 , the non-contact temperature sensor unit 220 corresponds to one side 11 in the Y-axis direction of the secondary batteries 10 . It includes a strip member 221 of length d2 and multiple temperature sensors 222 arranged along the Y-axis direction on the strip member 221 . That is, the point including the multiple temperature sensors arranged in a line is the same as the fourth embodiment, but the arrangement direction corresponds to a case in which the arrangement direction is orthogonal to the fourth embodiment.
[100]
By the Z-axis transfer mechanism 130, the non-contact temperature sensor unit 220 goes down between the secondary batteries 10 and is inserted into the separation space S in the Y-axis direction of the facing secondary battery 10 as shown in FIG. 12 . The temperature is sequentially measured at several points with respect to the area on the YZ plane of the secondary battery 10 facing while being inserted to the vicinity of one side 11 and then pulled out, and being transported in the separation space S.
[101]
The non-contact temperature sensor unit 220 measures the temperature from one side in the X-axis direction, and while the Z-axis transfer mechanism 130 is transferred by the X-axis transfer mechanism 110 , the temperature of the secondary batteries 10 is measured for each secondary battery 10 . done sequentially.
[102]
In this embodiment, since it is not necessary to transfer the Z-axis transfer mechanism 130 in the Y-axis direction to measure the temperature of all secondary batteries, the Z-axis transfer mechanism 110 while being transferred along the X-axis direction by the X-axis transfer mechanism 110 Another member for mounting the transfer mechanism 130 may be provided instead of the Y-axis transfer mechanism 120 described in the previous embodiments. As another example, without the Y-axis transfer mechanism 120 , the Z-axis transfer mechanism 130 is directly connected to and mounted on the X-axis LM slider 113 of the X-axis transfer mechanism 110 to follow the X-axis transfer mechanism 110 . An embodiment implemented to be transported in the axial direction is also possible. That is, if it includes multiple temperature sensors 222 arranged along the Y-axis direction, it may be implemented as a two-axis transfer mechanism including the X-axis transfer mechanism 110 and the Z-axis transfer mechanism 130 .
[103]
Here, as a modification of the fifth embodiment, it is also possible to provide the Z-axis transfer mechanism 140 as in the second embodiment instead of the Z-axis transfer mechanism 130 . And, as in the third embodiment, as a modification of the fifth embodiment, a temperature measuring mechanism in which the Z-axis transfer mechanism 130 and the non-contact temperature sensor unit 220 are provided in the number corresponding to the number of the secondary batteries 10 is also possible. .
[104]
13 shows a temperature measuring mechanism that may be included in the charging/discharging device according to the sixth embodiment of the present invention. The sixth embodiment is the same as the first embodiment in that it includes a three-axis transfer mechanism, but there is a difference in the non-contact temperature sensor unit 230 .
[105]
Referring to FIG. 13 , in the temperature measuring device T6 of the sixth embodiment, the non-contact temperature sensor unit 230 includes a plate member 231 having an area corresponding to the area on the YZ plane of the secondary batteries 10 and the plate member ( 231), including the multi-temperature sensor 232 arranged along the Y-axis and the Z-axis, as shown in FIG. 13, the non-contact temperature sensor unit 230 descends between the secondary batteries 10 and is inserted into the space S It is drawn out after simultaneously measuring the temperature of several places with respect to the area on the YZ plane of the facing secondary battery 10 . Since multiple sensors are used, the measurement time can be further shortened.
[106]
The non-contact temperature sensor unit 230 measures the temperature from one side in the X-axis direction, and as the Z-axis transfer mechanism 130 is transferred by the X-axis transfer mechanism 110 , the temperature measurement as shown in FIG. 14 is performed for each secondary battery 10 . It is repeated in the order of insertion by Z-axis transfer, withdrawal by transfer in the opposite direction, and movement by X-axis transfer, so that the temperature measurement is sequentially performed for each secondary battery 10 .
[107]
In this embodiment, since it is not necessary to transfer the Z-axis transfer mechanism 130 in the Y-axis direction to measure the temperature of all secondary batteries, the Z-axis transfer mechanism 110 while being transferred along the X-axis direction by the X-axis transfer mechanism 110 Another member for mounting the transfer mechanism 140 may be provided instead of the Y-axis transfer mechanism 120 described in the previous embodiments. As another example, without the Y-axis transfer mechanism 120 , the Z-axis transfer mechanism 130 is directly connected to and mounted on the X-axis LM slider 113 of the X-axis transfer mechanism 110 to follow the X-axis transfer mechanism 110 . An embodiment implemented to be transported in the axial direction is also possible. That is, if it includes multiple temperature sensors 232 arranged along the Y-axis and the Z-axis, as in the fifth embodiment, two axes including the X-axis transfer mechanism 110 and the Z-axis transfer mechanism 130 . It can also be implemented as a transport mechanism.
[108]
Here, as a modification of the sixth embodiment, it is also possible to provide the Z-axis transfer mechanism 140 as in the second embodiment instead of the Z-axis transfer mechanism 130 . And, as in the third embodiment, as a modification of the sixth embodiment, a temperature measuring mechanism in which the Z-axis transfer mechanism 130 and the non-contact temperature sensor unit 230 are provided in the number corresponding to the number of the secondary batteries 10 is also possible. . In this case, the X-axis feed and the Y-axis feed of the non-contact temperature sensor unit 230 are unnecessary, and only Z-axis feed is required. Therefore, there is no need for the X-axis transfer mechanism 110 or the Y-axis transfer mechanism 120 as in the previous embodiment, only a structure that supports the Z-axis transfer mechanism 130 may be required.
[109]
Meanwhile, in the present invention, in order to accurately measure the temperature of each secondary battery 10, a configuration capable of excluding the influence of neighboring secondary batteries is also included. It is a configuration for more accurately measuring the individual temperature of the secondary batteries 10 gathered in one space inside the tray 30 . Referring to FIG. 15 , the non-contact temperature sensor unit 200 ′ further includes an ambient temperature sensor 204 in addition to the single non-contact temperature sensor 202 . Examples of the ambient temperature measuring sensor 202 include a thermistor or a thermocouple. The ambient temperature measuring sensor 202 measures the ambient temperature. By applying the ambient temperature compensation algorithm using this, the measurement accuracy can be improved even when the sensor temperature changes due to ambient heat. The ambient temperature compensation algorithm may use known formulas and algorithms of computer calculation programs. An ambient temperature sensor 204 may be further provided in the multiple temperature sensors 212 , 222 , and 232 as described with reference to FIGS. 9 , 11 and 13 .
[110]
The number and type of various sensors used in the present invention can be changed according to cost and space. It is desirable to select and implement a sensor type at a level that reduces the cost as much as possible.
[111]
Meanwhile, in the previous embodiments, with reference to FIG. 2 , it has been mainly described that the installation position of the cooling fan 50 is above the tray 30 , but the installation position of the cooling fan 50 is not limited thereto. For example, a modification as shown in FIG. 16 is possible.
[112]
16 is a modified example of the charging/discharging device according to the first embodiment of the present invention, and shows an example in which the installation position of the cooling fan is changed. Referring to FIG. 16 , the charging/discharging device 300 ′ is different from the charging/discharging device 300 of FIG. 2 only in the installation position of the cooling fan 50 .
[113]
The cooling fan 50 is located on the side of the tray 30 . To enable cooling of several secondary batteries 10 , the cooling fans 50 may be installed on the side of the tray 30 , on the side facing the secondary battery 10 , the electrode leads 20 , in row and column directions. Even in this case, the wind direction and output of the cooling fan 50 are individually controlled. The adjustment method is the same as described above.
[114]
In general, since the secondary battery 10 generates more heat in the electrode lead 20 than in other parts, when the cooling fan 50 is positioned on the tray 30 side in this way, efficient cooling of the electrode lead 20 is possible. becomes In addition, there is no interference with the movement of the temperature measuring device (T1) by being located on the side of the tray (30).
[115]
As such, with respect to the installation position of the cooling fan 50, the upper portion or the side portion of the tray 30 is possible. For efficient cooling, the cooling fan 50 may be installed in the lower portion of the tray 30 , and may be installed in pairs facing the upper and lower portions, and may be installed in pairs facing both sides.
[116]
According to the present invention described above, there is provided a charging/discharging device including a movable temperature measuring mechanism for transferring the non-contact temperature sensor unit through the Z-axis elevating and lowering by the Z-axis transfer mechanism. If the Y-axis transfer mechanism and/or the X-axis transfer mechanism is further included here, the number of non-contact temperature sensors required for temperature measurement of each secondary battery can be reduced. As described above, the mobile type enables temperature measurement with as few non-contact temperature sensors as possible for a plurality of secondary batteries.
[117]
According to the present invention, it is possible to measure the temperature of each secondary battery by accommodating the secondary batteries in a tray and transferring the non-contact temperature sensor by the 3-axis transport mechanism. Since it is possible to measure the temperature of several parts of the secondary battery using a single sensor or multiple sensors, it is possible to obtain data for research by recording the measured temperature and making it a DB.
[118]
In addition, the temperature of each secondary battery in the tray is measured using the non-contact temperature sensor, and the wind direction and output of the cooling fan can be adjusted in response to the temperature of the secondary battery continuously changing during charging and discharging based on the temperature information. Thereby, there is an effect that it is possible to realize charging and discharging of uniform quality by improving the temperature deviation.
[119]
According to the present invention, the first feature is to propose the use of a movable non-contact temperature measuring device. A second feature is that it includes a plurality of cooling fans that can individually control wind direction and output in response to temperature information.
[120]
According to the present invention, the temperature of each secondary battery in the tray is measured using a movable non-contact temperature sensor, and the cooling fan wind direction and output are adjusted in response to the continuously changing secondary battery temperature during charging and discharging based on the temperature information. . Accordingly, it is possible to reduce the temperature deviation between the plurality of secondary batteries accommodated in the tray. In addition, even within one secondary battery, a temperature deviation may occur depending on the positions of the positive electrode lead and the negative electrode lead. According to the present invention, such temperature variations can also be reduced.
[121]
As described above, the charging/discharging device according to the present invention has the effect of being able to implement charging and discharging of uniform quality for various secondary batteries through improvement of temperature deviation.
[122]
As described above, although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited thereto, and the technical idea of ​​the present invention and the following by those of ordinary skill in the art to which the present invention pertains. It goes without saying that various modifications and variations are possible within the scope of equivalents of the claims to be described.
Claims
[Claim 1]
a temperature measuring device for measuring the temperature of at least one of the secondary batteries with respect to a plurality of secondary batteries arranged to be spaced apart from each other in an X-axis direction in an upright state with one side facing down in the Y-axis direction; a tray for arranging and accommodating a plurality of secondary batteries to be spaced apart from each other in the X-axis direction in an upright state with one side facing down in the Y-axis direction; a charging/discharging probe and a power supply device capable of individually applying power to the secondary batteries; and a plurality of cooling fans installed to cool the secondary batteries, each cooling fan having a wind direction and output individually controlled according to temperature information according to a position in each secondary battery for each secondary battery measured by the temperature measuring device. and the temperature measuring device includes: a non-contact temperature sensor unit inserted into a space between the secondary batteries to measure the temperature of the facing secondary batteries in a non-contact manner; and a Z-axis transfer mechanism for elevating and lowering the non-contact temperature sensor unit in the Z-axis direction, inserting the secondary batteries into the spaced space downward from a position spaced from the secondary batteries upwardly in the Z-axis direction, and withdrawing in the opposite direction. , charging and discharging devices.
[Claim 2]
The method according to claim 1, wherein the cooling fan is installed on the upper part of the tray in row and column directions to blow air to the secondary batteries directly below, but the wind direction is controlled by adjusting the angle with respect to the horizontal plane. charging and discharging device.
[Claim 3]
According to claim 1, wherein the cooling fan intensively cools a portion having a higher temperature according to the temperature information according to the position in each secondary battery for each secondary battery measured by the temperature measuring device to reduce a temperature deviation from other parts Charging/discharging device, characterized in that.
[Claim 4]
The charging/discharging device according to claim 1, wherein the temperature measurement by the temperature measuring device and the wind direction and output control of the cooling fan are interlocked in real time.
[Claim 5]
The charging/discharging apparatus according to claim 1, wherein the temperature measuring mechanism further comprises a Y-axis transfer mechanism for mounting the Z-axis transfer mechanism and transferring it along the Y-axis direction.
[Claim 6]
The charging/discharging according to claim 5, wherein the non-contact temperature sensor unit includes a single temperature sensor or includes multiple temperature sensors arranged along the Z-axis with a length corresponding to one side of the Z-axis of the secondary batteries. Device.
[Claim 7]
The charging/discharging device according to claim 5, wherein the temperature measuring mechanism further comprises an X-axis transfer mechanism for mounting the Y-axis transfer mechanism and transferring it along the X-axis direction.
[Claim 8]
The charge and discharge according to claim 7, wherein the non-contact temperature sensor includes a single temperature sensor or includes multiple temperature sensors arranged along the Z-axis with a length corresponding to one side of the Z-axis of the secondary batteries. Device.
[Claim 9]
The charging/discharging device according to claim 1, wherein the temperature measuring mechanism further comprises an X-axis transfer mechanism that mounts the Z-axis transfer mechanism and transfers it along the X-axis direction.
[Claim 10]
The method according to claim 9, wherein the non-contact temperature sensor unit includes multiple temperature sensors arranged along the Y-axis direction with a length corresponding to one side of the Y-axis direction of the secondary batteries or corresponding to an area on the YZ plane of the secondary batteries. A charging/discharging device comprising a plate member having an area and multiple temperature sensors arranged along Y-axis and Z-axis on the plate member.
[Claim 11]
The charging/discharging device according to claim 1, further comprising a temperature sensor for measuring ambient temperature in the non-contact temperature sensor unit.
[Claim 12]
The charging/discharging device according to claim 1, wherein the cooling fans are installed on the side of the tray toward the electrode leads of the secondary batteries in row and column directions.