CN216850201U

CN216850201U - Battery pack

Info

Publication number: CN216850201U
Application number: CN202220577385.8U
Authority: CN
Inventors: 关俊山; 谷亮杰; 颜廷露; 张勇杰
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-06-28
Anticipated expiration: 2032-03-16

Abstract

The utility model relates to a battery technology field provides a battery pack, including battery box and battery, the battery sets up in the battery box, and the battery box includes: the battery pack comprises a main frame, a battery cover and a battery cover, wherein the main frame comprises a plurality of supporting parts arranged at intervals; the temperature adjusting plate is connected to the main frame, and at least part of the temperature adjusting plate is positioned on one side of the supporting part, which is far away from the battery; wherein the circumferential edges of the cells are provided with flange structures, the flange structures being located between adjacent support portions in the stacking direction of the cells. Through setting up the battery on the supporting part of main frame, and the at least part of temperature regulation board is located the one side that the supporting part deviates from the battery to can avoid the battery to directly extrude temperature regulation board, with this avoid causing the damage to temperature regulation board, thereby guarantee temperature regulation board's security performance, with this performance of guaranteeing the battery package.

Description

Battery pack

Technical Field

The utility model relates to a battery technology field especially relates to a battery package.

Background

In the related art, the batteries in the battery pack are cooled by the cooling plate, and the cooling plate serves as a support structure for the batteries, so that the batteries may damage the cooling plate during use, thereby causing leakage of the cooling plate.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery pack to improve the performance of battery pack.

The utility model provides a battery pack, including battery box and battery, the battery sets up in the battery box, and the battery box includes:

the battery pack comprises a main frame, a battery cover and a battery cover, wherein the main frame comprises a plurality of supporting parts arranged at intervals;

the temperature adjusting plate is connected to the main frame, and at least part of the temperature adjusting plate is positioned on one side of the supporting part, which is far away from the battery;

wherein the circumferential edges of the cells are provided with flange structures, the flange structures being located between adjacent support portions in the stacking direction of the cells.

The utility model discloses the battery package includes battery box and battery, and the battery sets up in the battery box, and the battery box includes main frame and temperature regulation board, through setting up the battery on the supporting part of main frame, and temperature regulation board's at least part is located one side that the supporting part deviates from the battery to can avoid battery direct extrusion temperature regulation board, with this avoid causing the damage to temperature regulation board, thereby guarantee temperature regulation board's security performance, with this performance of guaranteeing the battery package.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:

fig. 1 is a schematic diagram illustrating a structure of a battery pack according to an exemplary embodiment;

fig. 2 is a cross-sectional partially enlarged structural view illustrating a battery pack according to an exemplary embodiment;

fig. 3 is another cross-sectional partially enlarged structural view illustrating a battery pack according to an exemplary embodiment.

The reference numerals are explained below:

10. a battery case; 11. a main frame; 111. a support portion; 112. a frame; 113. a partition beam; 12. a temperature adjusting plate; 121. a main body flow passage; 122. branching the flow channel; 123. a protrusion; 20. a battery; 21. a flange structure.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.

The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.

Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.

An embodiment of the utility model provides a battery pack, please refer to fig. 1 to fig. 3, the battery pack includes battery box 10 and battery 20, battery 20 sets up in battery box 10, and battery box 10 includes: a main frame 11, wherein the main frame 11 comprises a plurality of supporting parts 111 arranged at intervals, and the battery 20 is arranged on the supporting parts 111; the temperature adjusting plate 12, the temperature adjusting plate 12 is connected to the main frame 11, and at least a part of the temperature adjusting plate 12 is located on a side of the supporting portion 111 facing away from the battery 20;

wherein the circumferential edges of the cells 20 are provided with flange structures 21, the flange structures 21 being located between adjacent support portions 111 in the stacking direction of the cells 20.

The utility model discloses a battery package of an embodiment includes battery box 10 and battery 20, battery 20 sets up in battery box 10, and battery box 10 includes main frame 11 and temperature regulation board 12, through setting up battery 20 on main frame 11's supporting part 111, and temperature regulation board 12's at least part is located one side that supporting part 111 deviates from battery 20, thereby can avoid battery 20 direct extrusion temperature regulation board 12, thereby avoid causing the damage to temperature regulation board 12, thereby guarantee temperature regulation board 12's security performance, with this performance of guaranteeing the battery package.

It should be noted that the temperature adjustment plate 12 includes a heat exchange channel, a heat exchange medium is disposed in the heat exchange channel, the heat exchange medium in the heat exchange channel may be a fluid heat exchange channel, and the heat exchange channel may also be a gas heat exchange channel. The temperature adjustment plate 12 may include a heating plate and may also include a cooling plate. The temperature adjustment plate 12 may be a liquid cooling plate or a water cooling plate, which is not limited herein and may be selected according to actual needs.

The battery 20 is disposed on the supporting portion 111 of the main frame 11, and at least a portion of the temperature adjustment plate 12 is located on a side of the supporting portion 111 away from the battery 20, so that the supporting portion 111 can support the weight of the battery 20, the stress on the temperature adjustment plate 12 is reduced, and the risk of leakage of the heat exchange medium is reduced.

The support portion 111 may be used as a fin so that heat on the battery 20 may also be transferred to the main frame 11 through the support portion 111, thereby facilitating heat dissipation. The supporting portion 111 may have a rectangular structure.

The battery pack includes a plurality of batteries 20 including cells and an electrolyte, a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The battery cell refers to a unit formed by winding or laminating a stack including a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. Wherein the polarities of the first electrode and the second electrode can be interchanged. The battery core is arranged in the battery shell.

A plurality of batteries may be formed into a battery module and then disposed in the battery case 10, and the plurality of batteries may be fixed by end plates and side plates. A plurality of cells may be directly provided in the battery case 10, i.e., without grouping the plurality of cells, and at this time, the end plates and the side plates may be removed.

As shown in fig. 2, the peripheral edges of the cells 20 are provided with flange structures 21, and the flange structures 21 are located between adjacent support parts 111 in the stacking direction of the cells 20, so that it is possible to ensure that the cells 20 are reliably placed on the support parts 111, and to avoid interference of the flange structures 21 with the support parts 111. The flange structure 21 may serve as a heat dissipation structure of the battery 20.

It should be noted that a flange structure 21 is disposed between adjacent supporting portions 111, and a heat conductive adhesive may be disposed between the supporting portions 111 and the flange structure 21. The flange structures 21 are located between the adjacent protrusions 123, and a thermal conductive adhesive may be disposed between the flange structures 21 and the protrusions 123, so as to improve the thermal conductivity of the battery. In one embodiment, the batteries 20 are not in direct contact with the temperature adjustment plate 12, so that the batteries 20 may be prevented from pressing the temperature adjustment plate 12, thereby allowing the support portion 111 to support the weight of the batteries 20, reducing the stress on the temperature adjustment plate 12, and reducing the risk of leakage of the heat exchange medium.

In some embodiments, it is not excluded that a portion of the battery 20 is in direct contact with the temperature-adjusting plate 12, and a portion of the battery 20 is in contact with the support portion 111, so that the weight of the battery 20 can be distributed to the support portion 111 and the temperature-adjusting plate 12, thereby reducing the risk of leakage of the heat exchange medium.

In one embodiment, the support portion 111 is spaced apart from the temperature adjustment plate 12, so that the weight of the battery 20 can be reduced from being transferred to the temperature adjustment plate 12, thereby reducing the stress on the temperature adjustment plate 12 and reducing the risk of leakage of the heat exchange medium.

An air gap may be provided between the support portion 111 and the temperature-adjusting plate 12. A first heat conduction portion may be disposed between the support portion 111 and the temperature adjustment plate 12, so as to improve the heat transfer capability between the support portion 111 and the temperature adjustment plate 12.

The battery 20 and the supporting portion 111 may be in direct contact with each other, or a second heat conduction portion may be provided between the battery 20 and the supporting portion 111, so as to improve the heat transfer capability between the battery 20 and the supporting portion 111.

At least one of the first heat conduction portion and the second heat conduction portion may be a heat conduction coating, or at least one of the first heat conduction portion and the second heat conduction portion may be a heat conduction plate, such as a graphene plate or the like. At least one of the first heat conduction portion and the second heat conduction portion may be a heat conductive paste. When the first heat conducting portion is made of heat conducting glue, the heat conducting glue can also be used for connecting the supporting portion 111 and the temperature adjusting plate 12. When the second heat conduction portion is made of heat conduction glue, the heat conduction glue can also be used for connecting the battery 20 and the support portion 111.

In one embodiment, the surface of the supporting portion 111 contacting the battery 20 is not lower than the highest point of the temperature-adjusting plate 12 facing the battery 20, so that the battery 20 can be prevented from contacting the temperature-adjusting plate 12, thereby allowing the supporting portion 111 to support the weight of the battery 20, reducing or eliminating the stress on the temperature-adjusting plate 12, and reducing the risk of leakage of the heat exchange medium.

In one embodiment, the battery 20 is insulated from the support 111 to avoid safety issues.

The supporting portion 111 may be provided thereon with an insulating layer, which may be a coating, such as aluminum oxide (Al)₂O₃) Zirconium oxide (ZrO)₂) And the like. The supporting portion 111 may be coated with a plastic insulating layer, or the supporting portion 111 may be impregnated with an insulating layer, or the supporting portion 111 may be provided with a heat shrink sleeve.

In one embodiment, as shown in fig. 1, the main frame 11 includes a frame 112, and the support portion 111 extends from an inner side of the frame 112, so that the battery 20 can be reliably supported, and heat of the battery 20 can be transferred to the frame 112 through the support portion 111.

The frame 112 may be coupled to the temperature-adjusting plate 12 to form a space for accommodating the battery 20, thereby protecting the battery 20.

The frame 112 may form a space for accommodating the battery 20, and at this time, the supporting portions 111 are disposed in pairs along the length direction of the battery 20, and the battery 20 is supported on the paired supporting portions 111, that is, two opposite supporting portions 111 may be disposed on the frame 112, and the two supporting portions 111 are disposed at intervals, so as to reliably support the battery 20, and avoid the problem of excessive weight.

In one embodiment, as shown in fig. 1, the main frame 11 further includes a partition beam 113, the partition beam 113 is located at an inner side of the frame 112, the support portion 111 extends from the partition beam 113, and the support portion 111 on the frame 112 is disposed opposite to the support portion 111 on the partition beam 113, so as to reliably support the battery 20.

The frame 112 may be provided therein with a separating beam 113, so as to form at least two independent spaces for accommodating the batteries 20 in the frame 112, along the length direction of the batteries 20, the supporting portions 111 are arranged in pairs, the batteries 20 are supported on the paired supporting portions 111, that is, the frame 112 and the separating beam 113 may be provided with two opposite supporting portions 111, and the two supporting portions 111 are arranged at intervals, so as to realize reliable support of the batteries 20, and avoid the problem of too large weight.

The partition beam 113 may be one or more, and is not limited herein.

In one embodiment, the supporting portion 111 and the frame 112 are integrally formed, so that the structural strength is high, and the forming efficiency of the supporting portion 111 and the frame 112 can be improved.

The support portion 111 and the partition beam 113 are integrally formed, so that the structural strength is high, and the forming efficiency of the support portion 111 and the partition beam 113 can be improved.

The support portion 111 on the frame 112 may be an extruded section, machined or die-cast integrally. The support 111 on the partition beam 113 may be an extruded profile, machined or die-cast integral.

In one embodiment, as shown in fig. 2 and 3, the temperature-adjusting plate 12 includes a body flow passage 121 and a branch flow passage 122, and the body flow passage 121 and the branch flow passage 122 communicate with each other. The heat exchange medium can enter from the main body flow channel 121 and flow into the branch flow channel 122, so as to realize heat exchange. The branch flow path 122 may be plural. The number of the main body flow paths 121 may be plural, and the number of the main body flow paths 121 is smaller than the number of the branch flow paths 122. The body flow passage 121 may include a passage for the heat exchange medium to enter and a passage for the heat exchange medium to flow out.

The temperature-adjusting plate 12 may include two plate bodies disposed opposite to each other, thereby forming a main body flow passage 121 and a branch flow passage 122 inside.

The side of the temperature-adjusting plate 12 facing the battery 20 is formed with a protrusion 123, and the protrusion 123 forms at least a part of the branch flow passage 122, thereby achieving reliable heat exchange. The number of the projections 123 may be plural, thereby forming a plurality of branch flow paths 122.

The thickness of the support 111 is not less than the height of the protrusion 123, so that it can be ensured that the battery 20 can be disposed on the support 111. Further, the surface of the supporting portion 111 contacting the battery 20 is not lower than the highest point of the temperature adjustment plate 12 facing the battery 20, so that the battery 20 can be prevented from contacting the temperature adjustment plate 12, the weight of the battery 20 can be supported by the supporting portion 111, the stress on the temperature adjustment plate 12 can be reduced or eliminated, and the risk of leakage of the heat exchange medium can be reduced.

In some embodiments, the supporting portion 111 may be staggered with the protrusion 123, that is, the supporting portion 111 is located right above the main body flow channel 121, and the supporting portion 111 and the branch flow channels 122 are staggered, and the thickness of the supporting portion 111 is not less than the height of the protrusion 123, so that the battery 20 may be placed on the supporting portion 111 when the supporting portion 111 contacts the temperature adjustment plate 12, thereby ensuring that the supporting portion 111 supports the weight of the battery 20, reducing or eliminating the stress on the temperature adjustment plate 12, and reducing the risk of heat exchange medium leakage.

In some embodiments, it is not excluded that the supporting portion 111 may be disposed opposite to the protrusion 123, the supporting portion 111 is disposed right above the branch flow passage 122, and the supporting portion 111 and the main body flow passage 121 are disposed alternately.

In some embodiments, the supporting portion 111 is located right above the main body flow channel 121, and the surface of the temperature adjustment plate 12 facing the supporting portion 111 is a plane, so as to facilitate the arrangement of the supporting portion 111 and improve the space utilization rate inside the battery pack.

In one embodiment, as shown in fig. 3, the branched flow channel 122 is provided in plurality, and at least a part of the circumferential edge of the battery 20 is provided with a flange structure 21, and the flange structure 21 is located between adjacent protrusions 123 along the stacking direction of the battery 20, so that the utilization rate of the internal space of the battery pack can be improved, and the flange structure 21 is prevented from increasing the height of the battery pack.

In one embodiment, there are a plurality of batteries 20 and a plurality of supporting parts 111, and a plurality of batteries 20 are disposed on the plurality of supporting parts 111, so that effective support of each supporting part 111 to each battery 20 can be achieved. The plurality of supporting portions 111 are provided at intervals. The support portion 111 may be a plate body, and further, the support portion 111 may be a rectangular plate body. The supporting portion 111 may be a plurality of independent rectangular plates extending from the main frame 11. Alternatively, the supporting portion 111 may be a plurality of small rectangular plates disposed on a large plate extending from the main frame 11, which is not limited herein.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A battery pack characterized by comprising a battery case (10) and a battery (20), the battery (20) being disposed in the battery case (10), the battery case (10) comprising:

a main frame (11), wherein the main frame (11) comprises a plurality of supporting parts (111) arranged at intervals, and the battery (20) is arranged on the supporting parts (111);

a temperature-adjusting plate (12), wherein the temperature-adjusting plate (12) is connected to the main frame (11), and at least part of the temperature-adjusting plate (12) is positioned on the side of the supporting part (111) facing away from the battery (20);

wherein the peripheral edges of the cells (20) are provided with flange structures (21), the flange structures (21) being located between adjacent support portions (111) in the stacking direction of the cells (20).

2. The battery pack according to claim 1, wherein the support part (111) is provided at a distance from the temperature-adjusting plate (12).

3. The battery pack according to claim 1, wherein the surface of the support portion (111) in contact with the battery (20) is not lower than the highest point of the temperature adjustment plate (12) toward the battery (20).

4. The battery pack according to claim 1, wherein a first heat conduction portion is provided between the support portion (111) and the temperature adjustment plate (12);

and/or a second heat conducting part is arranged between the battery (20) and the supporting part (111).

5. The battery pack according to claim 1, wherein the battery (20) and the support portion (111) are arranged in an insulated manner.

6. The battery pack according to claim 1, wherein the main frame (11) includes a frame (112), the support portion (111) extends from an inner side of the frame (112), and the support portion (111) and the frame (112) are integrally formed.

7. The battery pack according to claim 6, wherein the main frame (11) further comprises a partition beam (113), the partition beam (113) is located inside the frame (112), the support portion (111) extends from the partition beam (113), and the support portion (111) on the frame (112) is opposite to the support portion (111) on the partition beam (113).

8. The battery pack according to any one of claims 1 to 7, wherein the temperature regulation plate (12) includes a main body flow passage (121) and a branch flow passage (122), the main body flow passage (121) and the branch flow passage (122) being in communication;

wherein, the temperature adjusting plate (12) is formed with a protrusion (123) toward one side of the battery (20), the protrusion (123) forms at least a part of the branch flow passage (122), and the thickness of the support part (111) is not less than the height of the protrusion (123).

9. The battery pack according to any one of claims 1 to 7, wherein the temperature regulation plate (12) includes a main body flow passage (121) and a branch flow passage (122), the main body flow passage (121) and the branch flow passage (122) being in communication, the support portion (111) being located directly above the main body flow passage (121);

wherein, temperature regulation board (12) just is for the plane to the surface of supporting part (111), and/or temperature regulation board (12) orientation battery (20)'s one side is formed with arch (123), arch (123) form branch runner (122) at least part.

10. The battery pack according to any one of claims 1 to 7, wherein the support portions (111) are provided in pairs along the length direction of the batteries (20), and the batteries (20) are supported on the pairs of support portions (111).