Title of Invention: Battery Pack with Handle
technical field
[One]
The present invention relates to a battery pack having a handle, and more particularly, to a battery pack having improved usability and energy density.
[2]
This application is an application for priority claiming Korean Patent Application No. 10-2019-0124815 filed on October 08, 2019, and all contents disclosed in the specification and drawings of the application are incorporated herein by reference.
background
[3]
Currently commercialized secondary batteries include nickel cadmium batteries, nickel hydride batteries, nickel zinc batteries, and lithium secondary batteries. Among them, lithium secondary batteries have almost no memory effect compared to nickel-based secondary batteries, so charging and discharging are free, The self-discharge rate is very low and the energy density is high, attracting attention.
[4]
These lithium secondary batteries mainly use a lithium-based oxide and a carbon material as a positive electrode active material and a negative electrode active material, respectively. A lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate to which the positive electrode active material and the negative electrode active material are applied, respectively, are disposed with a separator therebetween, and a cylindrical battery can sealing the electrode assembly together with an electrolyte.
[5]
Recently, secondary batteries have been widely used not only in small devices such as portable electronic devices, but also in medium and large devices such as automobiles and power storage devices. When used in such a medium-large device, a large number of secondary batteries are electrically connected to increase capacity and output.
[6]
On the other hand, in recent years, as the need for a large-capacity structure, including its use as an energy storage source, increases, a plurality of secondary batteries electrically connected in series and/or parallel, and a module case and battery management system (BMS) accommodating these secondary batteries therein The demand for battery packs with
[7]
In addition, in order to protect the plurality of secondary batteries from external shocks or to store and store the plurality of secondary batteries separately from the module case, it is common to further include an external housing provided with a metal material or reinforced plastic.
[8]
In addition, the external housing may be provided with a handle so that a user can carry and move the battery pack.
[9]
However, in the prior art, the handle provided on the exterior of the outer housing has a shape that protrudes to the outside, so that when the battery pack is stored, it may limit the storage space of the pack, and may interfere with or collide with an external object. This was high, and there was a risk of breakage of the handle.
[10]
Moreover, in the conventional handle, it was common to use a hook structure such as metal for restricting movement so that the connection part between the handle and the pack housing simply does not move the end of the handle more than a predetermined amount. Such a hook structure has a problem in that, when a user carries a heavy battery pack and moves, the force of weight is concentrated on the hook structure, so that the coupling structure between the handle and the pack housing is easily destroyed. Accordingly, there is a problem in that the durability of the battery pack is greatly reduced.
DETAILED DESCRIPTION OF THE INVENTION
technical challenge
[11]
Accordingly, the present invention has been devised to solve the above problems, and in particular, it is an object of the present invention to provide a battery pack having improved usability and energy density.
[12]
Other objects and advantages of the present invention may be understood by the following description, and will become more clearly understood by the examples of the present invention. Further, 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]
The battery pack according to the present invention for achieving the above object,
[14]
a battery module having a plurality of secondary batteries; and
[15]
An outer wall configured to form an internal space for accommodating the battery module, a handle bar configured to extend long in one direction, a handle configured in the form of a bendable strap and provided with strap portions extending from both ends of the handle bar, and the The handle bar is configured to be mountable, and when the handle bar is mounted, the strap part is configured to be built-in in a bent form one or more times, and when the handle bar is withdrawn, the strap part is between portions extending from both ends of the handle bar It includes a pack housing having a receiving portion configured to be able to hang the central portion of the.
[16]
In addition, the storage unit,
[17]
a stopper for preventing a central portion between portions extending from both ends of the handle bar of the strap portion from moving upward; and
[18]
A storage space may be provided in which the strap part is bent one or more times.
[19]
Moreover, the handle bar is configured to be mountable on the upper part of the hanger,
[20]
A accommodating space in which a first magnetic body is embedded is provided in the lower portion of the hanger,
[21]
The handle bar may be provided with the first magnetic body and a second magnetic body configured to apply a pulling force by the magnetic force.
[22]
And, the strap part has a ring shape connected integrally,
[23]
A portion of the strap portion may be located inside the handle bar.
[24]
Further, the strap portion,
[25]
a first extension portion extending from one end of the handle bar in the longitudinal direction; and
[26]
A second extension portion extending from the other end in the longitudinal direction of the handle bar and having one end overlappingly coupled to one end of the first extension portion may be provided.
[27]
In addition, the storage unit,
[28]
A slit may be provided so that the overlap-coupled portion of the first extension portion and the second extension portion is inserted and fixed.
[29]
Moreover, the handle is
[30]
When the handle bar is withdrawn from the receiving unit by the user, the other end is hinged to the handle bar so that the other end is hingedly rotated in the outside direction of the handle bar, and the other end rotated by the hinge is supported on the hanger. more can be provided.
[31]
In addition, the hook may be provided with a locking protrusion protruding upward having a shape corresponding to the other end of the auxiliary support to restrict the hinge rotational movement of the other end of the auxiliary support.
[32]
In addition, in the storage unit,
[33]
An elastic member configured to elastically press a portion of the strap portion in an upper direction or a lower direction may be provided.
[34]
Furthermore, the elastic member may be configured to, when the handle is withdrawn from the receiving portion, contract by a predetermined distance to prevent the movement of the central portion between the portions extending from each of both ends of the handle bar of the strap portion. can
[35]
Furthermore, the electronic device according to the present invention for achieving the above object includes at least one or more battery packs.
[36]
In addition, the vehicle according to the present invention for achieving the above object includes at least one or more of the battery pack.
Effects of the Invention
[37]
According to one aspect of the present invention, when the handle bar is mounted on the pack housing, by having a receiving part configured to be built-in in a form in which the strap part is bent one or more times, the connection part of the handle made of a hard material in the prior art is used. Compared to the case, the strap portion of the handle accommodated in the pack housing may be accommodated in a bent form, and thus the volume occupied by the strap portion may be minimized. Accordingly, more internal space can be secured based on a battery pack of the same size, and thus the energy density of the battery pack can be effectively increased.
[38]
In addition, according to an aspect of an embodiment of the present invention, the receiving portion includes a stopper for preventing the central portion between the portions extending from each of both ends of the handle bar of the strap portion from moving in the upward direction, so that the prior art handle In comparison with , when the handle bar is drawn out, the receiving unit can effectively restrain the handle bar from moving upward by a predetermined or more by the hook. In this case, it is possible to maximize the area in which the bendable strap is in close contact with the hanger, thereby effectively preventing damage or damage to the internal configuration of the pack housing due to the use of the handle.
[39]
And, according to another aspect of the present invention, a receiving space with a built-in first magnetic body is provided in the lower part of the hanger, and a second magnetic body configured to apply a pulling force by magnetic force with the first magnetic body is provided on the handle bar, The handle bar can be easily mounted on the storage unit. That is, by using the magnetic force of the first magnetic body and the second magnetic body, the handle bar can be automatically fixed in place in the receiving unit. Accordingly, the usability of the battery pack of the present invention can be greatly improved.
Brief description of the drawing
[40]
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 that the present invention is a matter described in those drawings should not be construed as being limited to
[41]
1 is a perspective view schematically illustrating a battery pack according to an embodiment of the present invention.
[42]
2 is an exploded perspective view schematically illustrating a state in which some components of a battery pack are separated according to an embodiment of the present invention.
[43]
3 is a partial perspective view schematically illustrating a state of a portion of some components of a battery pack according to an embodiment of the present invention.
[44]
4 is a perspective view schematically illustrating a handle as a part of a battery pack according to an embodiment of the present invention.
[45]
5 is a partial perspective view schematically illustrating only some components of a battery pack according to an embodiment of the present invention.
[46]
6 is a partial perspective view schematically illustrating a state in which a handle of a battery pack is drawn out according to another exemplary embodiment of the present invention.
[47]
7 is a partial perspective view schematically illustrating some aspects of some components of a battery pack according to another embodiment of the present invention.
[48]
FIG. 8 is a partial front view schematically illustrating some aspects of some components of the battery pack of FIG. 7 .
[49]
9 is a partial perspective view schematically illustrating a state of a portion of some components of a battery pack according to still another embodiment of the present invention.
Modes for carrying out the invention
[50]
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept consistent with the technical idea of ​​the present invention.
[51]
Therefore, 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 idea of ​​the present invention, so at the time of the present application, various It should be understood that there may be equivalents and variations.
[52]
[53]
1 is a perspective view schematically illustrating a battery pack according to an embodiment of the present invention. And, FIG. 2 is an exploded perspective view schematically illustrating a state in which some components of the battery pack are separated according to an embodiment of the present invention.
[54]
1 and 2 , the battery pack 300 of the present invention includes a battery module 200 and a pack housing 310 .
[55]
The battery module 200 may include a plurality of secondary batteries 100 , a module case 210 , and a bus bar 220 .
[56]
Here, the plurality of secondary batteries 100 may be can-type secondary batteries 100 . Here, the secondary battery 100 may include an electrode assembly (not shown) therein.
[57]
The electrode assembly may have a structure wound with a separator interposed between the positive electrode plate and the negative electrode plate, a positive electrode tab is attached to the positive electrode plate and connected to the cap assembly, and a negative electrode tab is attached to the negative electrode plate and connected to the bottom of the battery can can be
[58]
The battery can may have an empty space formed therein to accommodate the electrode assembly. In particular, the battery can, as cylindrical or prismatic, may be configured in an open top form. In addition, the battery can may be made of a metal material such as steel or aluminum to secure rigidity. In addition, the battery can has a negative electrode tab attached to the bottom, so that the battery can itself can function as a negative electrode terminal as well as the bottom of the battery can.
[59]
Since the configuration of the secondary battery 100 is widely known to those skilled in the art at the time of filing the present invention, a more detailed description will be omitted herein. In addition, although an example of the secondary battery 100 is illustrated in FIG. 2 , the battery module 200 according to the present invention is not limited to the configuration of the secondary battery 100 having a specific shape. That is, various secondary batteries 100 known at the time of filing of the present invention may be employed in the battery module 200 according to the present invention.
[60]
Furthermore, although the secondary battery 100 of FIG. 2 is illustrated based on the cylindrical secondary battery 100 , a prismatic secondary battery may be applied to the battery module 200 according to the present invention.
[61]
Again, referring to FIG. 2 , the plurality of secondary batteries 100 may be arranged in a left-right direction (X-axis direction) and an up-down direction (Z-axis direction). For example, as shown in FIG. 2 , the plurality of secondary batteries 100 may be arranged in a vertical direction and a horizontal direction. Furthermore, the plurality of secondary batteries 100 may be arranged in a form in which tubular portions in a cylindrical battery can face each other.
[62]
In particular, in the battery module 200 according to the present invention, the plurality of secondary batteries 100 may be configured to be laid down in a horizontal direction (Y-axis direction). Here, the horizontal direction means a direction parallel to the ground. That is, as shown in FIG. 2 , each of the 112 secondary batteries 100 may be configured to be elongated in the front-rear direction. In this case, in the entire secondary battery 100 , electrode terminals 111 may be provided at both ends in the front-rear direction (Y-axis direction). For example, in the secondary battery 100 , the positive terminal 111a and the negative terminal 111b may be positioned in front and rear directions, respectively.
[63]
Meanwhile, terms indicating directions such as before, after, left, right, up, and down described in the present specification may vary depending on the position of the observer or the placed shape of the object. However, in the present specification, for convenience of explanation, the negative and positive directions of the Y-axis direction of FIG. The positive and negative directions of the direction are set as the up-down direction, so that the directions such as front, rear, left, right, up, and down are displayed separately.
[64]
Referring to FIG. 2 , the module case 210 may include a first case 217 and a second case 219 . The first case 217 may be configured such that the second case 219 is stacked on the rear side. For example, as shown in FIG. 2 , the battery module 200, when viewed in the Y-axis direction, includes the first case 217 and the second case 217 located at the rear of the first case 217 . A case 219 may be provided. A hollow H1 configured to insert a portion of the secondary battery 100 may be formed in each of the first case 217 and the second case 219 .
[65]
In addition, the module case 210 may include an outer wall configured to form an inner space accommodating the plurality of secondary batteries 100 . Accordingly, the module case 210 of the present invention can effectively protect the plurality of secondary batteries 100 accommodated therein from external impact by having an outer wall.
[66]
In addition, in the inner space of the module case 210 , at least two secondary batteries 100 may be accommodated in a horizontally (Y-axis direction) form. The stacking direction is not necessarily limited to one direction, and may be an up-down direction (Z-axis direction) according to a direction in which the secondary battery 100 is laid down.
[67]
Therefore, according to this configuration of the present invention, since the side exposure of the secondary battery 100 is blocked by the module case 210, the insulation of the secondary battery 100 is improved, and the secondary battery 100 is protected from external physical and chemical elements. It is possible to protect the battery 100 .
[68]
Meanwhile, again referring to FIG. 4 together with FIG. 2 , the bus bar 220 is disposed between the plurality of secondary batteries 100 , for example, between all secondary batteries 100 , or between some of the secondary batteries 100 . can be electrically connected. To this end, at least a portion of the bus bar 220 may be made of an electrically conductive material. For example, the bus bar 220 may be made of a metal material such as copper, aluminum, nickel, or the like. Moreover, the bus bar 220 may have a structure in which two plates using different address materials are joined. For example, the bus bar 220 may have a form in which a bus bar plate made of a nickel material and a bus bar plate made of a copper main material are joined.
[69]
In particular, in the present invention, the bus bar 220 may include a body portion 222 and a connection portion 224 as shown in FIG. 2 .
[70]
The body portion 222 of the bus bar 220 may be formed in a plate shape. Moreover, the bus bar 220 may be configured in the form of a metal plate to ensure rigidity and electrical conductivity. In particular, the main body 222 may be configured to be erected along the electrode terminals 111 of the plurality of secondary batteries 100 in the vertical direction (the Z-axis direction in the drawing).
[71]
That is, in the present invention, the plurality of secondary batteries 100 are laid down long in the front-rear direction (Y-axis direction in the drawing) in the left-right direction (X-axis direction in the drawing) and/or in the vertical direction (Z-axis direction in the drawing). When arranged, the electrode terminals 111 of several secondary batteries 100 may be arranged in parallel in the front-rear direction (Y-axis direction) and the vertical direction. At this time, the main body 222 is a plate-shaped according to the arrangement direction of the electrode terminals 111 of the plurality of secondary batteries 100 and extends flat in the left and right and up and down directions and is erected with respect to the ground. can
[72]
Furthermore, the left and right side portions of the main body 222 of the bus bar 220 may be provided with external terminals 223 for sensing a voltage by a sensing member (not shown) or for transmitting power to the outside.
[73]
In addition, the bus bar 220 may contact the same polarity of the plurality of secondary batteries 100 to electrically connect them in parallel. Alternatively, the bus bar 220 may contact the electrode terminals 111 of some of the secondary batteries 100 and electrically connect them in parallel and in series.
[74]
Furthermore, an electrically insulating insulating sheet 370 may be provided on the outer surface of the bus bar 220 . For example, as shown in FIG. 2 , each of the two insulating sheets 370 may be provided on the front side of the bus bar 220 located on the front side and on the rear side of the bus bar 220 located on the front side, respectively. .
[75]
On the other hand, referring back to FIGS. 1 and 2 , the pack housing 310 may have a rectangular box shape as a whole. The pack housing 310 may include a front housing 312 and a rear housing 314 . Specifically, the rear end of the front housing 312 may be coupled to the front end of the rear housing 314 . In this case, the front housing 312 and the rear housing 314 may be bolted to each other, for example.
[76]
3 is a partial perspective view schematically illustrating a state of a portion of some components of a battery pack according to an embodiment of the present invention. 3 shows the rear housing 314 and the handle 320 .
[77]
Referring to FIG. 3 together with FIG. 2 , the pack housing 310 may include an outer wall 311 and an inner wall 313 configured to form an inner space accommodating the battery module 200 . For example, the pack housing 310 may include an inner upper wall 313a to cover the upper portion of the module case 210 accommodated therein, and left and right outer walls 311 to cover the left and right sides of the module case 210 . .
[78]
A handle 320 may be provided at an upper portion of the pack housing 310 . The handle 320 may include a handle bar 322 and a strap portion 324 . The handle bar 322 may have a suitable shape that a person's hand can hold. For example, the handle bar 322 may be in the form of a bar elongated in one direction (left and right direction). The strap part 324 may be configured in the form of a bendable band. The strap part 324 may extend from both ends of the handle bar 322 . For example, the strap part 324 may be made of a flexible and tough material. For example, the strap part 324 may include nylon.
[79]
In addition, the pack housing 310 may include a accommodating part 315 for accommodating the handle 320 . Specifically, the accommodating part 315 may have a flat surface 316a configured to mount the handle bar 322 . For example, the flat surface 316a may be a flat upper surface in a horizontal direction, which is located inward from the rest of the upper surface of the pack housing 310 .
[80]
Furthermore, when the handle bar 322 is mounted in the receiving unit 315, a receiving space 315s configured to allow the strap unit 324 to be stored in a bent shape at least once may be provided. That is, since the strap portion 324 has a bendable strap shape, the strap portion 324 connected to the lower portion of the handle bar 322 is directed so that the handle bar 322 is connected to the receiving portion 315 in a downward direction. When mounted as a , the strap part 324 may also be inserted into the storage space 315s in a downward direction to be built-in. In this case, the strap part 324 may be bent at least once to be embedded in the storage space 315s.
[81]
Therefore, according to this configuration of the present invention, the pack housing 310 is configured so that the handle bar 322 can be mounted, and when the handle bar 322 is mounted, the strap part 324 is operated one or more times. By having the receiving portion 315 configured to be built-in in a bent form, the handle ( Since the strap portion 324 of the 320 may be accommodated in a bent shape, the volume occupied by the strap portion 324 may be minimized. Accordingly, more internal space can be secured based on the battery pack 300 of the same size, and thus the energy density of the battery pack 300 can be effectively increased.
[82]
4 is a perspective view schematically illustrating a handle as a part of a battery pack according to an embodiment of the present invention. 5 is a partial perspective view schematically illustrating only some components of a battery pack according to an embodiment of the present invention. And, FIG. 6 is a partial perspective view schematically illustrating a state in which the handle of the battery pack is drawn out according to another embodiment of the present invention.
[83]
4 to 6 , the accommodating part 315 extends from both ends of the handle bar 322 of the strap part 324 that moves upward when the handle bar 322 is withdrawn. It may be configured such that the central portion P1 between the portions can be hung. Specifically, the accommodating part 315 is a stopper 316 for preventing the central portion P1 between portions extending from both ends of the handle bar 322 of the strap portion 324 from moving in the upward direction. ) can be provided. That is, both ends and the central portion of the hook 316 may be configured such that the central portion P1 between the portions extending from both ends of the handle bar 322 of the strap portion 324 is caught. In other words, the central portion P1 of the strap portion 324 may be configured not to be moved upward by the stopper 316 .
[84]
Accordingly, according to this configuration of the present invention, in the receiving portion 315, the central portion P1 between the portions extending from both ends of the handle bar 322 of the strap portion 324 in the upward direction. By having a stopper 316 to prevent movement, compared with a handle (not shown) of the prior art, the receiving part 315 is effectively attached to the stopper 316 when the handle bar 322 is withdrawn. By this, the handle bar 322 may be constrained so as not to move upward more than a predetermined amount. At this time, the area in which the bendable strap part 324 is in close contact with the hanger 316 can be maximized, so that damage or damage to the internal configuration of the pack housing 310 due to the use of the handle 320 can be effectively prevented. .
[85]
Meanwhile, referring to FIGS. 4 and 5 , a accommodating space 316s in which the first magnetic body 330a is embedded may be provided under the stopper 316 . In addition, the handle bar 322 may be provided with the first magnetic body 330a and a second magnetic body 330b configured to exert a pulling force by magnetic force therein. In this case, the first magnetic body 330a and the second magnetic body 330b may be provided at positions corresponding to each other.
[86]
That is, when the handle bar 322 is mounted on the hanger 316 , the first magnetic material 330a built into the accommodation space 316s and the second magnetic material 330b provided in the handle bar 322 . ) may be located close so that the handle bar 322 can be fixed to the upper portion of the hanger 316 . That is, as shown in FIG. 5 , the accommodating space 316s accommodating the first magnetic body 330a may be located at the center of the hanger 316 . Also, as shown in FIG. 4 , the second magnetic body 330b may be located in the inner center of the handle bar 322 .
[87]
Accordingly, according to this configuration of the present invention, the receiving space 316s in which the first magnetic body 330a is built-in is provided in the lower portion of the hanger 316, and the first magnetic body 330a and the first magnetic body 330a are provided in the handle bar 322. Since the second magnetic body 330b configured to act as a pulling force by magnetic force is provided, the handle bar 322 can be easily mounted on the receiving part 315 . That is, the handle bar 322 may be automatically fixed in place to the receiving unit 315 by using the magnetic force of the first magnetic body 330a and the second magnetic body 330b. Accordingly, the usability of the battery pack 300 of the present invention can be greatly improved.
[88]
Referring back to FIGS. 4 and 5 , the strap part 324 may have an integrally connected ring shape. The strap part 324 may be coupled with both ends partially overlapping each other. In this case, both ends of the strap part 324 may be bolted to each other using bolts.
[89]
For example, as shown in FIGS. 4 and 6 , the strap part 324 includes a first extension part 324a extending from one end of the handle bar 322 in the longitudinal direction, and the handle bar. A second extension portion 324b extending from the other end in the longitudinal direction of 322 and having one end overlapped with one end of the first extension portion 324a may be provided. In addition, the remaining part 324c of the strap part 324 may be located inside the handle bar 322 . The upper part 324c of the strap part 324 may be located inside the handle bar 322 . In addition, at least a portion of the upper portion 324c of the strap portion 324 may be fixed to the inside of the handle bar 322 .
[90]
Therefore, according to this configuration of the present invention, the strap portion 324 has a ring shape integrally connected, and a portion of the strap portion 324 is located inside the handle bar 322, so that the strap portion ( 324) may be provided in an integral form. The integrated strap part 324 may have significantly superior durability than the separated form.
[91]
Referring back to FIGS. 4 and 5 , in the receiving part 315 , the ends of the first and second extension parts 324a and 324b of the strap part 324 are overlapped and coupled to each other. A slit L1 may be provided to be inserted and fixed. The slit L1 may be located at a lower center of the stopper 316 . The slit L1 may be a space spaced apart between the rib-shaped barrier rib formed in the accommodation space 315s and the hanger 316 . In addition, the space formed by the slit L1 has a height corresponding to the thickness in the vertical direction of the overlap-coupled portion of the first extension part 324a and the second extension part 324b, or slightly may be smaller than
[92]
Accordingly, according to this configuration of the present invention, the receiving portion 315 is a slit (L1) configured to be fixed by inserting the overlap-coupled portion of the first extension portion 324a and the second extension portion 324b. By being provided, the strap part 324 can be easily fixed to the accommodation part 315 . Accordingly, the manufacturing efficiency of the battery pack 300 may be increased.
[93]
In addition, referring to FIGS. 4 to 6 , the strap part 324A according to another embodiment may further include a fixing protrusion 316p on each of the first extension part 324a and the second extension part 324b. there is. The fixing protrusion 316p may be configured to block the movement of each of the first and second extensions 324a and 324b of the strap part 324 in the left and right directions. The fixing protrusion 316p may be configured not to be moved by being caught on the outer surface of the slit L1. For example, as shown in FIG. 6 , a fixing protrusion 316p may be provided at each of the distal end of the first extension 324a and the distal end of the second extension 324b.
[94]
Accordingly, according to this configuration of the present invention, the strap portion 324 is provided with a fixing protrusion 316p on each of the first extension portion 324a and the second extension portion 324b, so that the strap portion 324 is provided. may be more completely fixed to the lower part of the accommodating part 315 . Accordingly, a phenomenon in which a part of the strap part 324 is moved or separated from the slit L1 can be prevented, thereby increasing the convenience of use of the battery pack 300 and reducing the occurrence of malfunction of the handle.
[95]
7 is a partial perspective view schematically illustrating some aspects of some components of a battery pack according to another embodiment of the present invention. And, FIG. 8 is a partial front view schematically showing some aspects of some components of the battery pack of FIG. 7 . In FIG. 8 , for convenience of drawing description, a rotational state of the auxiliary support 340 is shown.
[96]
7 and 8 , the battery pack 300A of FIG. 7 may further include an auxiliary support 340 compared to the battery pack 300 of FIG. 3 . That is, the configuration of the battery pack 300A of FIG. 7 except for the auxiliary support 340 is the same as that of the battery pack 300 of FIG. 3 .
[97]
Specifically, the auxiliary support 340, when the handle bar 322 is withdrawn from the receiving unit 315 by the user, the other end of the handle bar 322 is configured to be hingedly rotated in an outward direction. can The auxiliary support 340 may have a structure hinged to the handle bar 322 .
[98]
For example, as shown in FIG. 8 , the handle 320 may be provided with two auxiliary supports 340 . The two auxiliary supports 340 may be built into the handle bar 322 in a state in which the handle bar 322 is accommodated in the receiving part 315 . Conversely, when the handle bar 322 is withdrawn from the accommodating part 315, the two auxiliary supports 340 may be configured to be hinge-rotated in the left and right directions with respect to the center between the two. .
[99]
In addition, the auxiliary support 340 may be configured such that the other end of the hinge rotationally moved is supported upward by the upper surface of the stopper 316 on the stopper 316 . Accordingly, the auxiliary support 340 may serve to support the handle bar 322 in an upward direction. Moreover, when two auxiliary supports 340 are provided, it is possible to prevent the left and right movement of the handle bar 322 . That is, for example, as shown in FIG. 8, the auxiliary support 340 located on the left can prevent the handle bar 322 from moving to the right, and the auxiliary support 340 located on the right side. can prevent the handle bar 322 from moving to the left.
[100]
Therefore, according to this configuration of the present invention, when the handle bar 322 is withdrawn from the receiving part 315 by the user, the other end of the handle bar 322 is hingedly rotated in an outward direction of the handle bar 322 . By further comprising an auxiliary support 340 that is hinged to 322 and configured to support the other end of the hinge rotationally moved other end on the stopper 316, the strap portion 324 is configured to be bendable, or Due to the case in which a flexible material is provided, it is possible to prevent the flow of the handle bar 322 from increasing during movement. Accordingly, shaking of the battery pack 300A that may occur while the user holds the handle 320 and moves the battery pack 300A can be effectively reduced.
[101]
In addition, the locking protrusion 345 may be provided on the stopper 316 to restrict the rotational movement of the hinge of the other end of the auxiliary support 340 . The locking jaw 345 may have a shape corresponding to the other end of the auxiliary support 340 . For example, the locking jaw 345 may be configured to surround a portion of the other end of the auxiliary support 340 . For example, as shown in FIG. 7 , the locking jaw 345 may have a 'C' shape in plan view. That is, the stopping protrusion 345 may include a portion extending in the front-rear direction and a portion extending in the left-right direction from both ends in the front-rear direction of the portion extending in the front-rear direction.
[102]
An insertion groove (not shown) formed by inserting a portion of the handle bar 322 configured to insert at least a portion of the locking jaw 345 into the lower portion of the handle bar 322 may be provided. The insertion groove may be configured such that when the handle bar 322 is mounted on the stopper 316 , at least a portion of the locking jaw 345 is inserted therein. The handle bar 322 may be properly mounted on the stopper 316 by the insertion groove.
[103]
Therefore, according to this configuration of the present invention, the stopper 316 has a shape corresponding to the other end of the auxiliary support 340 to restrict the hinge rotation movement of the other end of the auxiliary support 340 and protrudes upward. By being provided with the locking jaw 345 , the other end of the auxiliary support 340 may be stably fixed on the stopper 316 . Moreover, when the locking protrusion 345 is inserted into the insertion groove provided in the handle bar 322 , it may guide that the handle bar 322 is mounted in the correct position on the stopper 316 . Accordingly, the usability of the battery pack 300A of the present invention can be greatly improved.
[104]
9 is a partial perspective view schematically illustrating a state of a portion of some components of a battery pack according to still another embodiment of the present invention.
[105]
Referring to FIG. 9 , the battery pack 300B of FIG. 9 may further include an elastic member 350 in the accommodating part 315 when compared with the battery pack 300 of FIG. 6 . The elastic member 350 may be configured to elastically press a portion of the strap part 324 in an upward or downward direction. The elastic member 350 may press a portion of the strap part 324 to be automatically bent when the strap part 324 is embedded in the accommodation space 315s. For example, as shown in FIG. 9 , two elastic members 350 may be provided in the accommodating part 315 . Each of the two elastic members 350 may be configured to press a portion of the strap part 324 in a downward direction.
[106]
Therefore, according to this configuration of the present invention, the accommodating part 315 is provided with an elastic member 350 configured to elastically press a portion of the strap part 324 in an upward or downward direction, so that the handle ( 320) is accommodated in the storage unit 315 of the pack housing 310, the strap unit 324 may be automatically bent at least once or more in the storage space 315s. Accordingly, since the strap part 324 is not easily bent, it is possible to reduce the inconvenience of not being easily embedded in the storage space 315s.
[107]
Moreover, the elastic member 350 may be provided with a spring 350a so that when the handle 320 is withdrawn from the receiving part 315 , it is contracted by the strap part 324 by a predetermined distance. And, the elastic member 350 is in the upper direction of the central portion (Fig. 4, P1) between the portions extending from both ends of the handle bar 322 of the strap portion 324 in the contracted state. A pressure band 350b may be provided to prevent movement.
[108]
For example, as shown in FIG. 9 , two elastic members 350 may be provided in the accommodating part 315 on both sides of the accommodating space 315s in the left and right directions. In each of the two elastic members 350 , when the handle bar 322 is withdrawn from the hanger 316 , the spring 350a may be pressed and compressed upwardly by the strap part 324 . The two elastic members 350 pressurized and compressed may block the upper direction of movement of the central portion of the strap part 324 by the pressure band 350b.
[109]
Therefore, according to this configuration of the present invention, the elastic member 350, when the handle 320 is withdrawn from the receiving portion 315, it contracts by a predetermined distance, the handle of the strap portion 324. By being configured to block the movement of the central portion between the portions extending from both ends of the bar 322 , in the present invention, the strap portion 324 is in close contact with the elastic member 350 together with the stopper 316 . In this case, the strap part 324 may stably limit the upward movement of the accommodation part 315 .
[110]
In addition, since the strap part 324 is in close contact with the elastic member 350 , an area of ​​close contact with the receiving part 315 may be increased. Since the weight force is not concentrated on any part of the receiving unit 315 , damage to the receiving unit 315 that may occur while the handle 320 is in use can be reduced.
[111]
Meanwhile, the battery pack 300 according to an embodiment of the present invention may include at least one or more of the battery modules 200 . In addition, the battery pack 300 may further include various devices (not shown) for controlling the charging and discharging of the battery module 200 , for example, a battery management system (BMS), a current sensor, a fuse, and the like.
[112]
Meanwhile, an electronic device (not shown) according to an embodiment of the present invention includes at least one or more of the above-described battery packs 300 . The electronic device may further include a device housing (not shown) having a storage space for accommodating the battery module 200 and a display unit through which the user can check the charging state of the battery module 200 .
[113]
Also, the battery pack 300 according to an embodiment of the present invention may be included in a vehicle such as an electric vehicle or a hybrid vehicle. That is, in a vehicle according to an embodiment of the present invention, at least one or more battery packs 300 according to the embodiment of the present invention described above may be mounted in a vehicle body.
[114]
Meanwhile, in this specification, terms indicating directions such as up, down, left, right, front, and back are used, but these terms are for convenience of explanation only, and may vary depending on the location of the object or the position of the observer. It is apparent to those skilled in the art that the present invention may
[115]
[116]
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. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.
[117]
[Explanation of code]
[118]
300: battery pack
[119]
100: secondary battery 200: battery module
[120]
210: module case
[121]
111, 111a, 111b: electrode terminal, positive terminal, negative terminal
[122]
310: pack housing 311: outer wall
[123]
320: handle 322: handle bar
[124]
324: strap portion 315: storage portion
[125]
316: hanger 315s: storage space
[126]
316s: accommodating spaces 330a, 330b: first magnetic material, second magnetic material
[127]
324a, 324b: first extension, second extension L1: slit
[128]
340: auxiliary support 345: jamming jaw
[129]
350: elastic member
Industrial Applicability
[130]
The present invention relates to a battery pack. In addition, the present invention can be applied to an electronic device to which the battery pack is applied and an automobile industry including the battery pack.
Claims
[Claim 1]
a battery module having a plurality of secondary batteries; and an outer wall configured to form an inner space for accommodating the battery module, a handle bar configured to extend long in one direction, a handle configured in the form of a bendable strap and provided with strap portions extending from both ends of the handle bar, and The handle bar is configured to be mountable, and when the handle bar is mounted, the strap part is configured to be built-in in a bent form one or more times, and when the handle bar is withdrawn, parts extending from both ends of the handle bar of the strap part when the handle bar is withdrawn A battery pack comprising a pack housing having a receiving portion configured to be caught between the central portion.
[Claim 2]
According to claim 1, wherein the accommodating portion, The strap portion between the portions extending from both ends of the handle bar stopper to prevent the central portion from moving in the upward direction; and a storage space in which the strap part is bent more than once.
[Claim 3]
According to claim 2, wherein the handle bar is configured to be mountable on the upper portion of the stopper, the lower portion of the stopper is provided with a accommodating space in which a first magnetic material is embedded, and the handle bar is pulled by the first magnetic material and magnetic force. A battery pack comprising a second magnetic body configured to apply a force.
[Claim 4]
The battery pack according to claim 2, wherein the strap part has a ring shape connected integrally, and a portion of the strap part is located inside the handle bar.
[Claim 5]
5. The method of claim 4, wherein the strap portion comprises: a first extension portion extending from one end in the longitudinal direction of the handle bar; and a second extension portion extending from the other end in the longitudinal direction of the handle bar and having one end overlapped with one end of the first extension, wherein the receiving portion includes the overlapping of the first extension and the second extension. A battery pack, characterized in that it is provided with a slit so that the coupled part is inserted and fixed.
[Claim 6]
5. The method of claim 4, wherein the handle is hinged to the handle bar so that when the handle bar is withdrawn from the receiving unit by a user, the other end is hingedly rotated to the outside of the handle bar, and the other end is hingedly rotated. Battery pack, characterized in that it further comprises an auxiliary support configured to be supported on the stopper.
[Claim 7]
The battery pack according to claim 6, wherein the hook has a locking jaw that has a shape corresponding to the other end of the auxiliary support and protrudes upward to restrict the hinge rotation movement of the other end of the auxiliary support.
[Claim 8]
The battery pack according to claim 4, wherein an elastic member configured to elastically press a portion of the strap portion in an upward or downward direction is provided in the receiving portion.
[Claim 9]
9. The method of claim 8, wherein the elastic member, when the handle is withdrawn from the receiving portion, contracts by a predetermined distance to prevent the movement of the central portion between the portions extending from both ends of the handle bar of the strap portion. A battery pack configured to resist.
[Claim 10]
10. An electronic device comprising a battery pack according to any one of claims 1 to 9.
[Claim 11]
10. A vehicle comprising at least one battery pack according to any one of claims 1 to 9.