Art
[1]This application claims priority to an application for the Korea Patent Application No. 10-2017-0044946, filed on April 06, dated 2017, all information disclosed in the specification and drawings of that application is hereby incorporated by reference into this application.
[2]The present invention end plate, the battery module, end in an outer shape change in the battery module according to the more specifically swelling phenomenon relates to a car comprising the battery pack and a battery pack including the battery module can prevent the plate, a battery module, It relates to a car comprising the battery pack and a battery pack including the battery module.
[3]
BACKGROUND
[4]
High application ease according to the product line, the electric vehicle driven by a secondary battery, an electrical drive source, as well as a portable device having an electrical characteristic, such as high energy density (EV, Electric Vehicle) or a hybrid vehicle (HEV, Hybrid Electric Vehicle) or the like It has been applied universally. These rechargeable batteries are not only the primary advantage of being able to reduce the use of fossil fuels dramatically attracting attention as a new energy source for environmentally friendly and energy efficiency in that the by-products of the use of energy does not occur at all.
[5]
Type of secondary battery is now widely used, there are lithium ion batteries, lithium polymer batteries, nickel cadmium batteries, nickel hydrogen batteries, nickel zinc batteries. Operating voltage of this unit secondary battery cells, that is, the unit battery cell is about 2.5V ~ 4.2V. Thus, more than if the required high output voltage by connecting a plurality of battery cells in series and also configure the battery pack. In addition, the parallel connection of a plurality of battery cells in accordance with the charge-discharge capacity required for the battery pack, and also configure the battery pack. Therefore, the number of battery cells included in the battery pack may be variously set according to the output voltage required, or charge-discharge capacity.
[6]
On the other hand, if you want to configure the battery pack by connecting a plurality of battery cells in series / parallel, constituting the battery module including a cell assembly composed of cells of two or more battery first, and by adding the other components to such a plurality of battery modules this is how to configure the battery pack in general.
[7]
On the other hand, when in the battery module, comprising a plurality of battery cells, the cell assembly, the battery cell may selil pouch type secondary battery. In the case of pouch-type secondary battery, the electrolyte inside the side reaction of repeated charge and discharge is decomposed may be a cell is inflated by the gas generator. At this time, the swelling phenomenon called the phenomenon of the deformation contours of the secondary battery cell by the generated gas.
[8]
Accordingly, a method of inserting a buffer material between the battery cells was applied to some conventional battery module, in order to prevent the swelling phenomenon.
[9]
1 is a diagram illustrating a conventional battery module, the buffer material is inserted between the battery cell.
[10]
1, the swelling phenomenon of the battery cell by inserting a cushioning material (2) of the same soft resilient material such as a conventional battery module, the battery cell 1 on EPDM (Ethlene Propylene Diene Monomer) rubber or polyurethane foam between the controls.
[11]
However, in the case of inserting a cushioning material (2) between the battery cell 1 for swelling control, as applied to a soft member hardly exert an initial surface pressure of the battery cell 1, according to the nature of the time of a soft material there the like due to such wear of the members which can be generated deformation may occur easily, and can cause later problems with swelling control, there is a problem that can lead to product reliability decreases.
[12]
On the other hand, also the method for installing the rigid end plates and the outside of the battery cell applied to prevent the swelling phenomenon of the battery modules in addition to the conventional method of inserting a buffer material between the above-mentioned battery cell.
[13]
2 is a view that the outside of the battery cell showing a conventional battery module, the rigid end plate is installed.
[14]
2, the conventional battery module by installing the pressure-end plate 3 having high rigidity outside of the battery cell 1 to control the swelling phenomenon of the battery cell (1).
[15]
However, when installing the end plates 3 to the outside of the battery cell 1 for swelling control, only the battery cell 1 is pressure-end plate 3, without the structure to absorb the swelling between the swelling withstand the pressure it must produce a pressure-end plate 3 in the high-strength steel sheet of thick metal. Accordingly, in the manufacture of a battery module, and increases the manufacturing cost, there is a problem that the volume and weight of the battery module increases. Further, in the case to prevent the swelling phenomenon of only the pressure-end plate 3, it is difficult to control the thickness tolerance of the cell assembly configuration when the battery cell unit consisting of a plurality of battery cells (1) problem.
[16]
Detailed Description of the Invention
SUMMARY
[17]
The present invention, there is provided an automobile including a battery pack and a battery pack including the end plates, a battery module, a battery module capable of preventing the appearance change of the module battery due to the swelling phenomenon.
[18]
An object of the present invention are not limited to the purposes mentioned above, and this is not mentioned will be understood by the other objects and advantages of the following description of the invention, it will be more clearly understood by an embodiment of the invention. Also, the objects and advantages of the invention will be readily appreciated that this can be realized by the means as claimed and combinations thereof.
[19]
Problem solving means
[20]
The battery module according to the present invention for solving the technical problem is support for supporting a plurality of cell assemblies consisting of the battery cell side-by-side stacked horizontally shape and a lower portion of the cell assembly was built in a vertical direction, one end of said support and may each include an end plate having an inside side face portion consisting of a bent shape in the inner lower part direction from the top of the other composed of a bent form in an upper direction side and the outer side surface portion at the other end.
[21]
The inner side face may include a latching protrusion configured to protrude at the bottom of the form.
[22]
The support may include a guide groove to guide or restrict the movement of the inner side portion which the engaging protrusion is inserted.
[23]
The inner side face may be less than the first inner side surface and the second consists of my side, wherein the first distance is the horizontal width of the cell assembly between the bottom of the inside side face and the second bottom of the inside side face portion.
[24]
It said inner side surface portion may be at least the top and the second distance being the horizontal width of the cell assembly between the top of the inside side face portion of the side face portion within the first.
[25]
Said support portion, said outer side and said inner side surface portion may be integrally formed.
[26]
It said inner side surface portion may be of a curved shape at an acute angle from the top of the outer side surface.
[27]
The inner side portion may include a projecting portion for restricting a distance between said outer side surface protrudes towards the outer side surface portion to less than a preset distance.
[28]
End plates are support for supporting the lower portion of the cell assembly consisting of a plurality of battery cells built in a vertical direction parallel to the stacking in the horizontal direction forms according to the invention; It may include a side surface portion composed of the inside bent inward downward form the top of the outer side surface and the outer side surface portion composed of the respective bent upward shape at one end and the other end of the support portion.
[29]
The battery pack according to the present invention may include a pack case housing the battery module and the battery module.
[30]
Vehicles according to the present invention may include the battery pack.
[31]
Effects of the Invention
[32]
According to the invention, it is possible to prevent the appearance change of the module battery due to the swelling phenomenon.
[33]
More specifically, the end plate according to the present invention reduces the volume and weight by forming a single plate material is bent it is possible to reduce the volume of the battery modules and increasing the energy density.
[34]
Brief Description of the Drawings
[35]
1 is a diagram illustrating a conventional battery module, the buffer material is inserted between the battery cell.
[36]
2 is a view that the outside of the battery cell showing a conventional battery module, the rigid end plate is installed.
[37]
Figure 3 is an exploded perspective view of a battery module according to an embodiment of the present invention.
[38]
Figure 4 is an exploded perspective view of the cell assembly includes a battery module in accordance with one embodiment of the present invention.
[39]
Figure 5 is a front view of an end plate according to one embodiment of the present invention.
[40]
Figure 6 is a cross-sectional view around the coupling of the end plate and the cell assembly in accordance with one embodiment of the present invention.
[41]
7 is a cross-sectional view after the bonding of the end plate and the cell assembly in accordance with one embodiment of the present invention.
[42]
Figure 8 is a cross-sectional view of the combined state of the cell assembly end plate and the swelling phenomenon occurs in accordance with an embodiment of the present invention.
[43]
Figure 9 is a front view of an end plate according to another embodiment of the present invention.
[44]
10 is a cross-sectional view of the coupling assembly of the end plate and the cell swelling phenomenon state according to another embodiment of the present invention.
[45]
Figure 11 is an enlarged view of the guide groove according to another embodiment of the present invention.
[46]
Figure 12 is an enlarged view of the guide groove according to another embodiment of the present invention.
[47]
13 is a view schematically showing a battery pack according to an embodiment of the present invention.
[48]
Mode for the Invention
[49]
The foregoing object, features and advantages will be able to easily carry out self technical features of the present invention one of ordinary skill in the art are described later in detail with reference to the accompanying drawings, accordingly. If the detailed description of the known art related to the invention In the following description of the present invention that are determined to unnecessarily obscure the subject matter of the present invention, and detailed description thereof will not be given. It will be described in the following, a preferred embodiment according to the present invention with reference to the accompanying drawings, for example, in detail. Like reference numerals in the drawings it is used to refer to same or similar elements.
[50]
Figure 3 is an exploded perspective view of a battery module according to an embodiment of the present invention, Figure 4 is an exploded perspective view of the cell assembly includes a battery module in accordance with one embodiment of the present invention, Figure 5 is an embodiment of the present invention a front view of an end plate according to the.
[51]
When 3 to 5, the battery module 10 according to one embodiment of the present invention may comprise a cell assembly 100 and the end plate 200.
[52]
The cell assembly 100 may include a battery cell (110).
[53]
Battery cells 110 may be provided with multiple pieces, each battery cell 110 can be configured in a state established in the vertical direction (± Y direction). Then, the plurality of battery cells can be stacked side by side in the horizontal direction, such as right and left directions (± X-axis direction). Each battery cell 110 may include a battery case and an electrode lead 115 for receiving the electrode assembly, the electrode assembly. Here, the electrode lead 115 may include a positive electrode lead and negative electrode lead, a positive electrode lead is connected to the positive electrode plate of the electrode assembly, the negative electrode lead may be connected to the negative electrode plate of the electrode assembly.
[54]
Type of battery cells 110 is not particularly limited and may be employed in the cell assembly 100 of the battery module 10 according to the present invention a variety of secondary batteries. For example, the battery cell 110, may be of a lithium ion battery, lithium polymer batteries, nickel cadmium batteries, nickel hydrogen batteries, nickel zinc batteries and so on. In particular, the battery cell 110 may be a lithium secondary battery.
[55]
On the other hand, the battery cell 110 may be divided into a pouch-shaped, cylindrical, square, etc., depending on the type of packaging material. In particular, the battery cell 110 in the battery module 10 according to the present invention may be a pouch-type secondary battery.
[56]
When the battery cell 110 is implemented as a pouch-shaped secondary cell, 3 and a plurality of battery cells 110, as shown in Figure 4 it may be arranged in the horizontal direction (± X-axis direction). Then, each battery cell 110, with each other is a large surface located at the right side and the left side, there is a large surface can be configured to face each other. In this case, the electrode lead of each battery cell 110 may be configured so as to project in the longitudinal direction (± Z-axis direction).
[57]
On the other hand, the cell assembly 100 of the battery module 10 according to the present invention, may further include a cell cartridge 130 and the cooling pin 150.
[58]
Cell cartridge 130 serves to facilitate the stacking of the plurality of battery cells 110 can be mounted to at least one battery cell 110 of the plurality of battery cells (110). This cell cartridge 130 may be provided in a plurality pieces, each cell cartridge 130. In one embodiment of the present invention may be configured to seat the two battery cells 110. However, the cell cartridge 130 is not limited thereto and can be also provided to the respective mounting structure of a single battery cell, it may be provided with mounting structure for three or more battery cells.
[59]
A plurality of cell cartridges 130. This can prevent the flow to hold a plurality of battery cells 110, and are configured to be mutually laminated guide the assembly of the battery cells 110.
[60]
Heat sink 150 may be formed by a thermally conductive material such as aluminum, it may be provided in each cell cartridge 130 to enable the battery cell 110 and the heat exchanger. Cooling pin 150 which is provided on each of the cell cartridges 130 may be provided as molded or insert provided in the form of cartridges inserted into the cell 130 type.
[61]
The end plate 200 may serve to support and to prevent the appearance change due to swelling (Swelling) development of the cell assembly 100 in the outside of the cell assembly (100). Here, the side of the cell assembly 100 outside the cell assembly, the battery cell 110 which is located outermost from the bottom and the plurality of battery cells 110 of 100 of which is supported from the end plate 200, such as the left-most located on the left side and the right side of the battery cell is located may be a right side surface of the battery cell.
[62]
To this end, the end plate 200 may include the support 210, the outer side surface 230 and the inside side face portion (250).
[63]
Support 210 may serve to support the lower portion of the cell assembly (100). Preferably, the support 210 may be composed of a metallic material of high rigidity, is composed of a large plate-shaped surface can be of a type binary laid so as to be positioned on the top and the bottom.
[64]
In addition, the support 210 includes a cell assembly 100 of the lower part and that the engagement projection 231 protrudes from the lower end of the side surface 250 on the top surface facing the inserted guide or restrict the movement of the engaging protrusions 231, the guide slot there are 211 can be formed.
[65]
Specific Description of the guide slot 211 to be detailed described later.
[66]
Outer side surface 230 can serve to limit the deformation of the inside side face portion 250, to support the inside side face portion 250 has elasticity. For this purpose, the outer side surface portion 230 may be of a curved shape in an upper direction (+ Y-axis direction) respectively in one end and the other end of the support 210.
[67]
That is, the outer side surface portion 230 is the other end of the support 210. Once the type of the first outer side portion (230a) bent in an upper direction (+ Y-axis direction) in the (left end in Fig. 5) and the support (210) of the ( may be configured in the right end in Fig. 5) in the upper direction (+ Y-axis direction), the second outer side surface (230b) of the bent shape by. Angle (D1) and preferably, the outer side portions 230 and the support 210 forms may be a right angle.
[68]
Preferably, the outer side portions 230 by being composed of a metallic material of high rigidity, even if the inside side face portion 250 is transformed into a volume increase of the battery cells 110 due to the swelling can maintain the outer shape of the battery module 10 .
[69]
Further, the outer side surface portion 230, may be of a plate-shaped similarly to the support 210. However, the outer side surface portion 230, in contrast to the support 210, may be of a type erected in the vertical direction, a large surface so as to be positioned in the lateral direction.
[70]
Within side portions 250 will count the assembly a plurality of battery cells 110 in the cell assembly 100 due to the swelling by the elastic force located on the side of the battery cell 110 which is located at the outermost with the 100 It may serve to limit the strain. To this end, in the side face 250 can be of a curved shape inwardly downward from the top of the outer side surface 230. Here, the inward means that can sense the horizontal direction from the cell assembly (100).
[71]
More specifically, referring to the configuration of Figure 5, in the side face 250 can be composed of a first inner side surface (250a) and the second inner side surface portion (250b). Here, the first inner side portion (250a) may be of a curved shape with a first outer side surface portion inward direction (+ X-axis direction) by bending back the lower doedaga direction (-Y direction) in the upper end of (230a). Then, the second inner side surface portion (250b) may be of a curved shape to the second outer side surface inwardly bent doedaga (-X axis direction) back to the lower direction (-Y-axis direction) from the top of the (230b).
[72]
In addition, within the side portions 250, as in the support 210 and the outer side surface portion 230 may be of a plate shape. Further, the inner side surface 250, similar to the outer side surface portion 230, may be of a type erected in the vertical direction, a large surface so as to be positioned in the lateral direction.
[73]
Preferably, the angle is within the side portion 250 and the outer side surface 230 make up may be configured such that the acute angle.
[74]
For example, referring to the configuration shown in Figure 5, the first outer side portion (230a) and the first time considered D2 the angle is within the side portions (250a) forms, this D2 is to and less than 90 ° than 0 ° It can be configured. In addition, it can be configured in the configuration of Figure 5, "when referred to, these D2, two outer side portions (230b) and the second is the angle D2 forms within the side portions (250b) is greater than 0 ° to less than 90 ° . In particular, D2 and D2 'may be of a smaller angle than 45 °. Moreover, D2 and D2 'may be of a small angle, less than 15 ° is an angle smaller than 30 °. Here, D2 and D2 'may be configured to have the same angle.
[75]
With such a configuration of the present invention, the inside side face portion 250 to support the side of the cell assembly (100). Moreover, the cells from this case, and within the side surface 250 and the outer side surface 230 is double the cell assembly 100, the left and so on the right side, physical impact applied from the outside of the battery module 10 and the chemical factors of the assembly 100 can be secured.
[76]
In particular, within the side portions 250 are configured in a bent shape at an acute angle from the outer side surface 230, it is possible to hold the elastic on the pressure applied to the outward direction from the side of the cell assembly (100). Thus, when the battery cell 110 by swelling occurs apply pressure outward against the inner side surface 250, within the side portions 250 is applied to the direction of pressure by the elastic provided in the cell assembly 100 and it may support the cell assembly 100 in the opposite direction, that is, an inward direction. Therefore, while appropriately absorbing the swelling of the battery cell 110 can be prevented from taking place excessively expansion of the cell assembly (110).
[77]
Furthermore, in the case of the battery module 110 according to the present invention, it is provided with the outer side surface 230 on the outside of the inside side face portion 250, a slight modification in the side 250 by the swelling of the battery cells 110 although the overall shape of the battery module by the outer side surface 250 may not substantially change.
[78]
On the other hand, between the inside side face portion 250, namely first there within side portions and can be the second mounting is the count assembly 100 is inserted between the inner side surface portion, in this case, within the side portions 250 are materials with an elastic can. Accordingly, the count between the inside side face portion 250, the assembly 100 is inserted within the elastic force of the side portion 250 is applied to the count assembly 100 can be supported a count assembly 100.
[79]
On the other hand, within the lower end of the side surface portion 250 may be formed with a locking projection 251 of the extruded form. Engaging protrusion 251 is inserted into the above-mentioned guide slot 211 may be moved and the guide or restrict the movement of the inside side face portion 250, through which also the guide or limited. To this end, the position of the engaging protrusion 251 and the guide slot 211 may be formed at a position corresponding to each other on the upper surface of the bottom support 210 of the inside side face portion 250, respectively.
[80]
On the other hand, the aforementioned support 210, the outer side surface 230 and the inside side face portion 250 may be integrally formed. That is, the support 210, the outer side surface 230 and the inside side face portion 250 may be formed by bending (Bending) a single plate material.
[81]
Accordingly, in the prior art, and extruding the side walls for supporting the sides of the cell assembly, without having to manufacture a battery module, a plate member for supporting a lower face of the cell eosel assembly through a step of bonding the extruded side wall, by simply bending one plate member it is possible to manufacture the structure of the hollow structure for supporting the lower side of the cell assembly (100).
[82]
Hereinafter to be described in detail engagement of the end plate 200 and the count eosel assembly 100.
[83]
6 is a cross-sectional view around the coupling of the end plate and the cell assembly in accordance with one embodiment of the present invention, Figure 7 is a cross-sectional view after the bonding of the end plate and the cell assembly in accordance with one embodiment of the present invention.
[84]
6 and 7, the first inner side portion (250a) and the top and bottom of the cell assembly (100) between the top end of the second inner side surface portion (250b) is entered in the end plate 200 and the cell assembly (100 ) it may be combined. To this end, the distance between the upper end of the first inner side portion (250a), the top and the second inner side surface portion (250b) of the (a) may be more than the distance (t) between the side of the cell assembly (100). Here, the cell assembly, the distance (t) between the side of 100, a width of the cell assembly 100, which is measured by the horizontal direction, the battery cells 110 are laminated, the battery cell 110 is located in the left It may be a distance from the left side to the right side surface of the battery cell 110 located on the extreme right.
[85]
As it described above, the first inner side portion (250a) and the second inner side surface portion (250b) may be respectively first formed by bending inwardly the lower direction from the top of the first outer side portion (230a) and the second outer side surface (230b) . In this case, the first angle is within a side portion (250a) and the first outer side portion (230a) has an angle and the second inner side surface portion (250b) and the second outer side surface (230b) forming an acute angle may be. Thus, the first inner side portion (250a) and the second inner side surface portion (250b), the first outer side portion (230a) and a second outer side surface (230b) and is not fully parallel configuration, the first outer side portion (230a) and the it may be of a type binary slightly inclined in an inward direction from the second outer side surface (230b).
[86]
Thus, the cell assembly (100 distance (b) between the lower end of the cell assembly 100, the lower end and the second inner side surface portion (250b) of the first inner side portion (250a) before the coupling is fully inserted into the end plates 200 ) the distance (t) between the side surface of the can below.
[87]
Next, the first inner side surface portion at the bottom and the second inner side end plate 200 and the cell assembly 100, the lower is the penetration of the cell assembly 100 to the lower edge of its (250b) of (250a) that can complete the coupling have.
[88]
The cell assembly is the first inner side surface portion at the bottom and the second inner side surface portion the first inner side portion (250a) and the second inner side surface portion (250b) in the course of entry to the lower edge of its (250b) of (250a) at the bottom of 100 is each of the first It can be moved towards the other side portion (230a) and the second outer side surface (230b).
[89]
At this time, the first outer side portion (230a) and the second outer side surface (230b) engaging formed in the lower end of the protrusion 251 is guide by the insertion into the groove 211 moves along the guide slot 211, a first outer side portion (230a ) and it is possible to guide the movement of the second outer side surface (230b).
[90]
On the other hand, the first is within the side (250a) and the second elastic force increased by one in the side surface portion (250b) moves can be fixed and the support cell assembly 100 by pressing the sides of the cell assembly (100).
[91]
When a swelling phenomenon in the cell assembly (100) occurs less, the volume of the battery cell 110 increases, and to describe the swelling prevention role of the end plate 200.
[92]
Figure 8 is a cross-sectional view of the combined state of the cell assembly end plate and the swelling phenomenon occurs in accordance with an embodiment of the present invention.
[93]
8, when the swelling phenomenon in the end plate at least one of the plurality of battery cells (110) included in the cell assembly 100 in combination with 200, the battery cell 110 occurs, the plurality of battery cells ( 110) it is possible to increase the volume of the cell assembly 100 in the horizontal direction are stacked.
[94]
In this way, increase the volume of the first inner side portion (250a) and the second inner side surface portion (250b) of the battery cell 110 for supporting the battery cell 110 which is located on the outermost one of the plurality of battery cells 110 from the side It can be applied to the pressure direction.
[95]
Thereafter, the first inner side portion (250a) and the second inner side surface portion (250b) has engagement projections 251 of the first outer side portion (230a) and the second outer side surface (230b), respectively, by inserting the guide slot (211) towards can be guided and moved.
[96]
More specifically, the end of the first inner side portion (250a) and a second lower end of the inside side surface (250b), engaging protrusion 251 is guide slot 211 as the swelling phenomenon occurs in the cell assembly 100 the hanging can be a first advance toward the one outer side portion (230a) and the second outer side surface (230b) blocks.
[97]
This by over, maintaining the first inner side portion (250a) and a lower end each of the first outer side portion (230a) and the second outer side surface (230b) and a distance of the second inner side surface portion (250b), the first inner side portion (250a ) and it is possible to enhance the spring force applied to the central portion and the upper end of the second inner side surface portion (250b).
[98]
On the other hand, if the volume of the first inner side portion (250a) and the second is the central portion of the inside side surface (250b), the cell assembly 100 in contact with the central portion of the battery cell 110 is increased continuously, the pressure applied continuously and it may be more severely bent toward the first outer side portion (230a) and the second outer side surface (230b) corresponding to. If, In is increased in volume continues the battery cell 110, the first inner side portion (250a) and the second inner side surface portion (250b), the center is each of the first outer side portion (230a) and a second outside of the side surface portion (230b) of the can in contact with the central portion. Thereafter, the first inner side portion (250a) and the second pressure, even if applied to the inside side surface (250b), the rigidity is high first outer side portion (230a) and the second outer side surface (230b) has the first inner side portion (250a) and the second can be supported within the side surface (250b) it is no longer within the first side portion (250a) from being deformed and the second inner side surface portion (250b).
[99]
That is, when the swelling occurs in the cell assembly 100, the first inner side portion (250a) and the second inner side surface portion (250b) at the bottom is more by the engaging projection 251 engaging the end of the guide slot (211) is moved over the block, it is possible to maintain each of the bottom and a distance of the first outer side portion (230a) and a second outer side surface (230b).
[100]
On the other hand, the central portion of the first inner side portion (250a) and the second inner side surface portion (250b) may be bent to the center of the first outer side portion (230a) and the second outer side surface (230b).
[101]
Thereby, the end plate 200 in accordance with the present invention are swelling phenomenon occurs even if outer shape is maintained through the support 210 and the outer side surface 230 of the rigidity in the cell assembly (100) coupled therein, elastic through the inside side face portion 250 having an outer shape can be prevented from change of the cell assembly (100).
[102]
In addition, the end plate 200 in accordance with the present invention is a sheet material is being formed by bending, thereby reducing the overall weight of the battery module 10, a bar which can prevent the manufacturing cost increase, can greatly improve the production efficiency have.
[103]
In addition, the battery module 10 according to the present invention may further comprises a terminal frame 300 and the cover frame 400, as shown in FIG.
[104]
The terminal frame 300 is provided at the front and back of the cell assembly 100, it may be electrically connected to the electrode leads 115 of the cell assembly, a plurality of battery cells 110 of the system 100. For example, the electrode lead of the battery cell 110, 115, may be located on the side of the X-axis direction from the cell assembly (100). That is, the electrode leads 115 of the battery cell 110, may be located on the front and back sides of the cell assembly (100). In this case, the terminal frame 300, is provided in the front and rear of such a cell assembly 100, may be connected to the electrode leads 115 of each battery cell (110).
[105]
This terminal frame 300 may further include a connector 350.
[106]
Connector 350 may act as a terminal for making electrical connection to the control unit as included in the outside of the battery module 10 to the battery pack, such as (Battery Management System) BMS.
[107]
Cover frame 400 serves to support the cell assembly 100, is provided as a pair, the two sides having the electrode leads 115 of the plurality of battery cells 110 in the cell assembly 100, such as a battery is provided in the front and rear side of the module 10 may cover the front and back sides of the cell assembly (100).
[108]
At least one of these a pair of cover frame 400 may include a terminal 410 and the connector through-part 430.
[109]
Terminal 410 may be connected to the terminal frame 300 so as to be electrically connected to the electrode leads 110 of the plurality of battery cells 110 electrically. These terminals 410 may be provided as a pair, it may be electrically connected to as an external power source.
[110]
Through connector unit 430 is formed in the cover frame 400, it is possible to pass through the connector 430 out of the cover frame 400. Accordingly, the connector 430 may be electrically connected as a control device included in the battery pack, such as a BMS.
[111]
Hereinafter to describe the end plate according to another embodiment of the present invention.
[112]
9 is a front view of an end plate according to another embodiment of the present invention, Figure 10 is a cross-sectional view of the coupling assembly of the end plate, the cell with the swelling phenomenon state according to another embodiment of the present invention.
[113]
When 9 and 10, since the end plates 200 'according to another embodiment of the present invention is substantially identical to the end plate 200 in accordance with one embodiment of the present invention described above, or similar to, the same It will be described with focus on the differences, or for not described repeatedly in the similar configuration.
[114]
End plates 200 'according to another embodiment of the invention the guide slot (211 in the upper surface, consisting of a formed support portion 210'), the first outer side portion (230a 'to) and the second outer side surface (230b') It may include an outer side surface (230 ') and the first inner side surface portion is formed at the bottom of the engaging projection (251') (250a ') and the second inner side surface portion (250b, consisting of) within the side portions 250'.
[115]
Support 210 and the outer side surface portion of the "supporting portion (210) and the outer side surface 230 'is an end plate 200 in accordance with one embodiment of the invention the end plates 200' according to another embodiment of the present invention ( 230) and the form and role can be the same.
[116]
However, 'in the side face (250) end plates 200' according to another embodiment of the present invention is a portion configured to be further added to prepare in the side 250 of the end plate 200 in accordance with one embodiment of the present invention can.
[117]
More specifically, the "My side (250) end plates 200 'according to another embodiment may further include a projecting portion (252'). These projections (252 ') has an outer side surface (230' can limit the distance between the outer side surface (250 ') is configured so as to project toward a) below the pre-set distance.
[118]
Here, it may be a minimum distance between the inside side surface portion (250 ') and the outer side surface (230') set in advance to design the battery module even if the swelling phenomenon occurs a predetermined distance to limit the width of the cell assembly (100).
[119]
To this end, the protruding height of the protrusions (252 ') may be formed at a preset distance.
[120]
Protrusions (252 ') has a first outer side portion (230a, the second outer side surface (230b') in the central portion of) 'surface and the second outer side surface (230b opposed to) the first outer side portion (230a), in a central portion of the It may be formed on opposing surfaces.
[121]
In addition, the protrusion (252 '), each of the first outer side portion (230a the pressure applied to) the cell assembly 100 due to the volume increase in the first inner side surface portion (230b') of the second inner side surface portion (230b), and Article may be a plate shape having a predetermined width so as to be applied to a large area by two outer side sections (230b ').
[122]
Through this, the projection (252 ') is within the side portions 250' and the other 'by maintaining a distance of less than a predetermined distance, within side portions (250 side surface portion 230') is excessively deformed, and prevents the phenomenon of bending can do.
[123]
Hereinafter to describe the guide groove according to another embodiment of the present invention.
[124]
Figure 11 is an enlarged view of the guide groove according to another embodiment of the present invention.
[125]
11, in other embodiments the guide groove according to the example (211'a) is the same or similar substantially with the guide slot 211 in accordance with one embodiment of the present invention described above, the same or similar for be described with the focus on the differences do not repeatedly described.
[126]
The guide slot in accordance with another embodiment of the present invention (211'a) is the guide projecting portion (211'a-1, 211'a-2) projected along the direction of movement of the engaging protrusion 251 on the upper surface may be formed .
[127]
Guide protrusions (211'a-1, 211'a-2) may gradually restrict the movement of the engaging protrusion 251 is moved due to the volume increase of the cell assembly (100). To this end, the guide projecting portion (211'a-1, 211'a-2) is a cell assembly 100 and located close to the first guide protrusion (211'a-1) and the first guide projection (211'a-1 ) than can be of a cell assembly 100 and located away from the second guide protrusion (211'a-2).
[128]
More particularly, the first guide protrusion (211'a-1) is a second guide projection (211'a-2) be in contact with more engaging projections 251 first first limit drive the movement of the engaging protrusion 251 have. Through this, the first guide protrusion (211'a-1) can increase the elasticity of the inside side face portion 250 connected to the engaging projection 251.
[129]
Then, if the pressure applied to the inside side face portion 250 is increased by the volume of the cell assembly 100 is further increased, the engaging protrusion 251 can move on the first guide projection (211'a-1). Accordingly, the second guide protrusion (211'a-2) may limit the movement of the engaging passed the first guide projection (211'a-1), the protrusion 251 Secondary.
[130]
Thereby, the guide projecting portion (211'a-1, 211'a-2) is a stepwise change in the outer shape of the stepwise restriction by the movement of the engaging protrusion 251, a cell assembly 100 is supported within the side surface 251 It may be limited.
[131]
On the other hand, engaging protrusions in accordance with the volume increase of the guide projection portion (211'a-1, 211'a-2) In the above description has been described to be formed with 2 to the guide groove (211'a), the cell assembly 100 ( 251), guide protrusions (211'a-1, the number of 211'a-2) formed in the guide groove (211'a) to limit the movement of is not limited.
[132]
Further, the shape of the guide projection portion (211'a-1, 211'a-2) shown in Fig. 11 has been shown to be a rectangular parallelepiped, the shape of the guide projection portion is a slope inclined in correspondence with the direction of movement of the engaging protrusion 251 the form may be having.
[133]
Hereinafter to describe the guide groove according to another embodiment of the present invention.
[134]
Figure 12 is an enlarged view of a guide groove according to another embodiment of the present invention.
[135]
S Referring to Figure 12, and so guide groove (211'b) according to another embodiment is substantially the same as the guide slot 211 in accordance with one embodiment of the present invention described above, or similar, the same or similar configuration for be described with the focus on the differences do not repeatedly described.
[136]
The guide slot (211'b) according to still another embodiment of the present invention, a guide step portion (211'b-1, 211'b-2) having a step along the moving direction of the engaging projecting portion 251 formed on the upper surface It can be.
[137]
Guide step portion (211'b-1, 211'b-2) may gradually restrict the movement of the engaging protrusion 251 is moved due to the volume increase of the cell assembly (100). Further, the guide step portion (211'b-1, 211'b-2) is, by further bending in the side portions 250 are formed above the guide groove (211'b), the cell assembly (100 in the side surface 250 ) it is possible to increase the elastic force to be applied to.
[138]
More specifically, the guide step portion (211'b-1, 211'b-2) is a cell assembly 100 and the proximity to the first guide formed above the guide groove (211'b), the step portion (211'b-1 ) and the first guide step portion (211'b-1) than the cell assembly (second guide step portion (211'b-2) is formed is located away and 100) above the first guide step portion (211'b-1) It may consist.
[139]
The first guide, the cell assembly step portion (211'b-1) is a locking projection 251 is further bent by the inside side face portion 250 than when located in the guide groove (211'b), within a side portion 250 ( It can be thereby applied to increase the elastic force of 100).
[140]
Then, the volume of the cell assembly 100 is further increased if the pressure applied to the inside side face portion 250 is increased, the engaging protrusion 251, a first guide step portion through a second guide (211'b-1) It may move to the step portion (211'b-2).
[141]
At this time, the second by that due to the high engagement projections 251 rising of the guide step portion (211'b-second), than if the engaging protrusion 251 is located in the first guide step portion (211'b-1) within the side portions 250 is further bent can be applied in an increased resilient force to the cell assembly 100.
[142]
That is, the movement due to the swelling increases, the volume of the cell assembly (100) engaging the protrusion (251) in a first guide step portion (211'b-1) and a second guide step portion (211'b-2) in order that being, in the side face 250 can be applied to an elastic force according to the increased volume of the cell assembly (100) to the cell assembly 100 to block the appearance change of the cell assembly (100)
[143]
The battery pack according to the present invention can comprise at least one battery module according to the present invention.
[144]
13 is a view schematically showing a battery pack according to an embodiment of the present invention.
[145]
Referring to Figure 13, the battery pack (P) is, it may include at least one battery module 10 and at least one pack case 50 for packaging the battery module 10 according to the previous embodiment.
[146]
For example, the battery pack according to the invention (P), as shown in the figure, may be composed of three battery modules 10 are housed in the pack case 50 form.
[147]
In addition, the battery pack (P) according to the invention, this battery module 10, in addition, the pack case 50 for housing the battery module 10, various devices for controlling the charging and discharging of the battery modules, such as a battery management system may further include a (Battery management system BMS), a current sensor, a fuse or the like. The battery pack (P) can be provided on, as a driving source of the automotive vehicle. For example, the battery pack (P) can be provided in a car driven using the battery pack (P) such as an electric vehicle, a hybrid vehicle. In addition, the battery pack (P), in addition to such a car, it can be provided also for power storage device using the secondary battery (Energy Storage System) or the battery charging station, and other different devices or mechanisms and equipment as a matter of course.
[148]As such, a battery pack (P) and the apparatus having a battery pack (P) such as a vehicle or apparatus and equipment bar, the above-described battery module 10, including the above-described battery module 10 according to this embodiment you can implement a battery pack (P) and a car having all of the advantages result.
[149]The present invention described above is carried out by the present invention it to those of ordinary skill, in which so many possible changes and modifications may be made without departing from the scope of the present invention above-described example and the attached drawings in it not limited by.

Claims
[Claim 1]Outer side portion consisting of supporting a plurality of battery cells built in a vertical direction to support the cell assembly, and a lower portion of the cell assembly consisting of the side-by-side stacked horizontally forms, at one end and the other end of the support portion in each of the bent form in an upper direction and a battery module including an end plate having an inside side face portion consisting of a bent shape in the inner direction in the upper end of the lower outer side.
[Claim 2]The method of claim 1, wherein the inner side surface includes a locking protrusion consisting of a protruding at the bottom of the form, and wherein the support portion is a battery module including a guide recess to guide or restrict the movement of the inner side portion which the engaging protrusion is inserted.
[Claim 3]The method of claim 1, wherein the inner side is the first inner side surface and the second consists of my side, the horizontal width is less than the battery modules of the first distance between the lower end of the inside side face and the second bottom of the inside side face portion said cell assembly .
[Claim 4]The method of claim 3 wherein the inner side is the top and the second distance being greater than the horizontal width of the battery module of the cell assembly between the top of the inside side face portion of the side face portion within the first.
[Claim 5]According to claim 1, wherein said support portion, said outer side and the inner side surface of the battery module are integrally formed.
[Claim 6]The method of claim 1, wherein the inner side surface of the battery module configured in a bent shape at an acute angle from the top of the outer side surface.
[Claim 7]The method of claim 1, wherein the inner side surface of the battery module, which protrudes toward the outer side surface portion includes a projection that limits spaced by less than a pre-set distance and the distance of the outer side surface.
[Claim 8]A plurality of erected in the vertical direction support portion for supporting the lower battery cell is a cell assembly composed of the side-by-side stacked in a horizontal direction form; End plate including in the side surface portion composed of the bent inward downward form the top of the outer side surface and the outer side surface portion composed of the respective bent upward shape at one end and the other end of the support portion.
[Claim 9]Claim 1 to claim battery module according to any one of claims 7 or 8 and a battery pack including a pack case housing the battery module.
[Claim 10]Car comprising a battery pack according to claim 9.