Battery module fixing device and battery pack

Abstract

The utility model relates to the technical field of batteries, in particular to a battery module fixing device and a battery pack. The battery module fixing device comprises a battery box plate, supporting beams and end plates, at least two supporting beams are arranged on the battery box plate at intervals in the first direction, the end plates made of insulating materials are connected to the supporting beams, and gaps are reserved between the adjacent end plates; and a mounting cavity for mounting a battery module is formed between the end plates which are oppositely arranged at intervals. During application, the end plates can play a basic insulating role, the battery module can be stably supported and fixed from the two sides, and the battery box plate can play a role in supporting the battery module from the bottom. The gap reserved between the two adjacent end plates can enable the adjacent battery modules corresponding to the adjacent end plates to have a certain gap, so that the adjacent battery modules have a certain heat dissipation space.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and particularly to a battery module fixing device and a battery pack. Background Art

[0002] The battery module fixing device is a key component for installing battery modules in electric vehicles and energy storage systems. With the continuous progress of technology, its structural design needs to meet the increasing energy storage requirements. The fixing device for carrying the battery module needs to meet the following requirements: be able to adapt to battery modules of different sizes and shapes; keep the battery module stable during vehicle driving to prevent displacement; cooperate with the thermal management system to effectively conduct heat. How to meet the above requirements is a technical problem to be solved in this field. Content of the Utility Model

[0003] In view of this, the present application provides a battery module fixing device and a battery pack, which can adapt to battery modules of different sizes and shapes, can stably fix the battery module, and can optimize the heat dissipation performance.

[0004] In a first aspect, a battery module fixing device provided by the present application includes: a battery box plate; support beams, at least two of the support beams are arranged at intervals along a first direction on the battery box plate; and end plates, the end plates are made of insulating materials, one side of multiple end plates is at least partially connected to some of the support beams, and there is a gap between two adjacent end plates, and an installation cavity for installing a battery module is formed between the relatively spaced end plates.

[0005] In combination with the first aspect, in a possible implementation manner, it further includes: a box body beam, the box body beam is arranged on the battery box plate, and the support beams are connected between the relatively spaced box body beams along a second direction.

[0006] In combination with the first aspect, in a possible implementation manner, the support beams are welded to the box body beam and / or the battery box plate.

[0007] In combination with the first aspect, in a possible implementation manner, the end plate includes: a battery cell limiting plate, protruding on the side of the end plate away from the support beam, so as to divide the end plate into two symmetrical parts, for separating two battery cells arranged adjacent to each other side by side along the second direction in each battery module.

[0008] In combination with the first aspect, in a possible implementation manner, the end plate includes: a busbar receiving groove, arranged on the side of the end plate away from the battery box plate, and located on both sides of the battery cell limiting plate respectively.

[0009] In combination with the first aspect, in a possible implementation, a clamping groove for clamping the support beam is formed on one side of the end plate facing the support beam.

[0010] In combination with the first aspect, in a possible implementation, the end plate includes: a guiding component protruding from one side of the end plate facing the support beam and corresponding to the position of the battery cell limiting plate, and the guiding component extends downward from the bus bar accommodating groove into the clamping groove; wherein, a guiding and positioning groove for cooperating with a part of the guiding component located in the clamping groove is recessed on one side of the support beam facing the end plate.

[0011] In combination with the first aspect, in a possible implementation, the guiding component includes: a transverse plate, a first vertical plate and a second vertical plate that are parallel to each other, the first vertical plate and the second vertical plate are connected by an arc-shaped connecting portion, and a plurality of the transverse plates are connected between the relatively spaced first vertical plate and the second vertical plate along the second direction.

[0012] In combination with the first aspect, in a possible implementation, the end plate includes: a mounting groove protruding from one side of the end plate away from the battery module, and the bottom of the mounting groove facing the battery box plate is used to abut against the support beam installed in the clamping groove, and bolt holes are provided on the bottom; wherein, fixing holes matching the bolt holes are provided on one side of the support beam away from the battery box plate, and the end plate and the support beam are fixedly connected by inserting a connecting piece into the bolt holes and the fixing holes.

[0013] In a second aspect, the present application provides a battery pack, including: a plurality of battery modules, the battery modules including a plurality of battery cells; and the aforementioned battery module fixing device, and the battery modules are respectively installed in an installation cavity formed between the relatively spaced end plates.

[0014] When the present application is applied, the end plate can play a basic insulating role and can stably support and fix the battery module from both sides along the X direction. The battery box plate can support the battery module from the bottom to prevent the battery module from being displaced. The gap left between two adjacent end plates can enable the adjacent battery modules corresponding to the adjacent end plates to have a certain gap, so that the adjacent battery modules have a certain heat dissipation space, effectively conduct heat, and optimize the heat dissipation performance. The box body beam stably supports and fixes the battery module from both sides along the Y direction, and the box body beam can also improve the torsional resistance of the battery box plate, that is, improve the structural rigidity of the entire battery box plate and strengthen the structural firmness of the battery box plate. The battery cell limiting plate can support the battery cells and at the same time make the adjacent battery cells have a certain distance to have a certain heat dissipation space. Description of the Drawings

[0015] Figure 1 The figure shows a schematic structural diagram of a battery module fixing device provided by an embodiment of the present application;

[0016] Figure 2 The figure shows a schematic structural diagram of an end plate of a battery module fixing device provided by an embodiment of the present application;

[0017] Figure 3 The figure shows a schematic structural diagram of a support beam of a battery module fixing device provided by an embodiment of the present application;

[0018] Figure 4 The figure shows a schematic structural diagram of the battery module fixing device when assembled with a battery module. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0020] An exemplary battery module fixing device is as follows:

[0021] Figure 1 The figure shows a schematic structural diagram of a battery module fixing device provided by an embodiment of the present application. Figure 2 The figure shows a schematic structural diagram of an end plate of a battery module fixing device provided by an embodiment of the present application. The present application provides a battery module fixing device. In one embodiment, as Figure 1 and Figure 2As shown in the figure, the battery module fixing device includes a battery box plate 1, a support beam 2, and an end plate 3. At least two support beams 2 are arranged at intervals along the first direction X on the battery box plate 1 to form an assembly area. The end plate 3 is made of an insulating material. The end plate 3 is arranged in the area formed between the support beams 2. At least a part of one side of multiple end plates 3 is connected to some of the support beams 2. The support beam 2 plays a role in supporting and fixing the end plate 3, and there is a gap between two adjacent end plates 3. An installation cavity for installing the battery module 100 is formed between the relatively spaced end plates 3. When this embodiment is applied, the end plate 3 can play a basic insulating role and can stably support and fix the battery module 100 from both sides along the X direction. The battery box plate 1 can support the battery module 100 from the bottom to prevent the battery module 100 from shifting. The gap left between two adjacent end plates 3 can enable a certain gap between the adjacent battery modules 100 corresponding to the adjacent end plates 3, so that the adjacent battery modules 100 have a certain heat dissipation space, effectively conduct heat, and optimize the heat dissipation performance. The end plate 3 can be designed according to the size and shape of the battery module, so as to adapt to different sizes and shapes of battery modules.

[0022] Figure 4 The figure shows a schematic structural diagram of the battery module fixing device when the battery module is assembled. In one embodiment, as Figure 1 and Figure 4 shown, the battery module fixing device further includes a box beam 4. The box beam 4 is arranged on the battery box plate 1. The support beam 2 is connected between the relatively spaced box beams 4 along the second direction Y. The support beam 2, the end plate 3, and the box beam 4 enclose an installation cavity for installing the battery module 100. The box beam 4 stably supports and fixes the battery module 100 from both sides along the Y direction. In addition, the box beam 4 can also improve the torsional resistance of the battery box plate 1, that is, improve the structural rigidity of the entire battery box plate 1 and strengthen the structural firmness of the battery box plate 1.

[0023] In one embodiment, the support beam 2 is welded to the box beam 4 and / or the battery box plate 1. Welding the support beam 2 and the box beam 4 to each other can effectively improve the connection stability between the support beam 2 and the box beam 4, so that the support beam 2 and the box beam 4 form an integrated structure to support and fix the battery module 100 from multiple sides, and further improve the support stability of the support beam 2 and the box beam 4 for the battery module 100. Welding the support beam 2 and the battery box plate 1 to each other can effectively improve the connection stability between the support beam 2 and the battery box plate 1, so that the support beam 2 and the battery box plate 1 form an integrated structure, which can improve the support stability for the battery module 100. In addition, it can further improve the structural rigidity of the entire battery box plate 1.

[0024] In one embodiment, as Figure 1As shown in the figure, the end plate 3 includes a battery cell limiting plate 5. The battery cell limiting plate 5 protrudes from the side of the end plate 3 away from the support beam 2, so as to divide the end plate into two symmetrical parts, and is used to separate two battery cells arranged adjacent to each other side by side along the second direction Y in each battery module 100. The battery cell limiting plate 5 can support the battery cells, and at the same time make the adjacent battery cells have a certain distance, so as to have a certain heat dissipation space.

[0025] In one embodiment, as Figure 1 shown, the end plate 3 includes a busbar accommodating groove 6. The busbar accommodating groove 6 is arranged on the side of the end plate 3 away from the battery box plate 1 and is located on both sides of the battery cell limiting plate 5 respectively, so as to accommodate and arrange the busbars. The busbars of the two battery cells separated by the battery cell limiting plate 5 are routed from the busbar accommodating grooves 6 at the corresponding positions.

[0026] Figure 3 The figure shows a schematic structural diagram of a support beam in a battery module fixing device provided by an embodiment of the present application. In one embodiment, as Figure 3 shown, a clamping groove 300 for clamping the support beam 2 is formed on the side of the end plate 3 facing the support beam 2. Specifically, the shape of the clamping groove 300 is designed according to the shape of the support beam 2, so as to cooperate with the support beam 2 for connection, and avoid displacement between the end plate 3 and the support beam 2.

[0027] Figure 4 The figure shows a schematic structural diagram of the battery module fixing device when it is assembled with the battery module. In one embodiment, referring to Figure 3 and Figure 4 , the end plate 3 includes a guiding component. The guiding component protrudes from the side of the end plate 3 facing the support beam 2 and corresponds to the position of the battery cell limiting plate 5. The guiding component extends downward from the busbar accommodating groove 6 into the clamping groove 300. Among them, a guiding and positioning groove 201 for cooperating with a part of the guiding component located in the clamping groove 300 is recessed on the side of the support beam 2 facing the end plate 3. In this embodiment, the guiding component can facilitate the mutual connection and positioning of the end plate 3 and the support beam 2, and can further improve the connection stability of the end plate 3 and the support beam 2; at the same time, it can facilitate the disassembly process. When the end plate 3 needs to be connected to the support beam 2, the guiding component is aligned with the guiding and positioning groove 201 for assembly.

[0028] Specifically, as Figure 3As shown, the guiding assembly includes a transverse plate 8, a first vertical plate 9 and a second vertical plate 10 that are parallel to each other. The first vertical plate 9 and the second vertical plate 10 are connected by an arc-shaped connecting portion 900. A plurality of transverse plates 8 are connected between the relatively spaced-apart first vertical plate 9 and second vertical plate 10 along the second direction Y. The transverse plate 8 can improve the transverse rigidity of the guiding assembly. The vertical plate 9 is slidably and matingly connected with the guiding positioning groove 201. The arc surface of the arc-shaped connecting portion 900 can play a guiding role, making it easier for the guiding assembly to enter the guiding positioning groove 201.

[0029] In one embodiment, as Figure 3 shown, the end plate 3 includes a mounting groove 301. The mounting groove 301 protrudes from the side of the end plate 3 away from the battery module 100. The groove bottom 302 of the mounting groove 301 facing the battery box plate 1 is used to abut against the support beam 2 installed in the clamping groove 300. Bolt holes are provided on the groove bottom 302. Wherein, fixing holes 202 matching the bolt holes are provided on the side of the support beam 2 away from the battery box plate 1. The end plate 3 and the support beam 2 are fixedly connected by inserting a connecting member 303 into the bolt holes and the fixing holes 202. After the end plate 3 is assembled on the support beam 2, the bolt holes on the groove bottom 302 of the mounting groove 301 are aligned with the fixing holes 202 on the support beam 2. After the connecting member 303 is sequentially assembled into the bolt holes and the fixing holes 202, the fixed connection can be completed. Specifically, threads can be provided in the holes of the fixing holes 202, and the connecting member 303 can be a bolt, and the bolt can be screwed in. Through the guiding assembly and the mounting groove, the disassembly and assembly convenience of the battery module can be improved, and the maintenance difficulty can be reduced.

[0030] In one embodiment, as Figure 1 and Figure 3 shown, a fixture stress groove 7 is provided on the end plate 3. For example, when the entire battery module fixing device needs to be transported or during the assembly operation, the clamping mechanism of the fixture can be clamped on the fixture stress groove 7 to grab the entire device.

[0031] An exemplary battery pack is as follows;

[0032] The present application also provides a battery pack. The battery pack includes a plurality of battery modules 100 and the aforementioned battery module fixing device. The battery module includes a plurality of battery cells, and the battery modules 100 are respectively installed in the installation cavities formed between the relatively spaced-apart end plates 3.

[0033] The basic principles of the present application have been described in connection with specific embodiments. However, it should be noted that the advantages, benefits, effects, etc. mentioned in the present application are only examples and not limitations. It cannot be considered that these advantages, benefits, effects, etc. are essential for each embodiment of the present application. Additionally, the specific details disclosed above are only for illustrative and easy-to-understand purposes and not limitations. These details do not limit the present application to necessarily implement using the above specific details.

[0034] The block diagrams of the devices, apparatuses, equipment, and systems involved in the present application are only illustrative examples and do not intend to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open-ended terms meaning "including but not limited to" and can be used interchangeably with each other. The word "or" and "and" used herein refer to the word "and / or" and can be used interchangeably with it, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to" and can be used interchangeably with it.

[0035] It should also be noted that in the devices, equipment, and methods of the present application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of the present application.

[0036] The above description of the disclosed aspects enables any person skilled in the art to make or use the present application. Various modifications to these aspects are very obvious to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

[0037] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, etc. made within the spirit and principles of the present application shall be included within the protection scope of the present application.

Claims

1. A battery module fixing device, characterized in that, Comprising: A battery box panel (1); Support beams (2), at least two of the support beams (2) are arranged at intervals along a first direction (X) on the battery box panel (1); And End plates (3), the end plates (3) are made of an insulating material, one side of a plurality of the end plates (3) is at least partially connected to some of the support beams (2), and a gap is left between two adjacent end plates (3), and an installation cavity for installing a battery module (100) is formed between the relatively spaced end plates (3).

2. The battery module fixing device according to claim 1, characterized in that, Further comprising: A box body beam (4), the box body beam (4) is arranged on the battery box panel (1), and the support beams (2) are connected between the relatively spaced box body beams (4) along a second direction (Y).

3. The battery module fixing device according to claim 2, wherein The support beam (2) is welded to the box body beam (4) and / or the battery box panel (1).

4. The battery module fixing device according to claim 1, wherein, The end plate (3) comprises: A battery cell limiting plate (5), protruding from a side of the end plate (3) away from the support beam (2) to divide the end plate into two symmetric parts for separating two battery cells arranged adjacent to each other side by side along the second direction (Y) in each battery module (100).

5. The battery module fixing device according to claim 4, wherein, The end plate (3) comprises: A bus bar accommodating groove (6), arranged on a side of the end plate (3) away from the battery box panel (1) and located on both sides of the battery cell limiting plate (5) respectively.

6. The battery module fixing device according to claim 5, characterized in that, A clamping groove (300) for clamping the support beam (2) is formed on a side of the end plate (3) facing the support beam (2).

7. The battery module fixing device according to claim 6, characterized in that, The end plate (3) comprises: A guiding assembly, protruding from a side of the end plate (3) facing the support beam (2) and corresponding to the position of the battery cell limiting plate (5), and the guiding assembly extends downward from the bus bar accommodating groove (6) into the clamping groove (300); Wherein, a guiding and positioning groove (201) for cooperating with a part of the guiding assembly located in the clamping groove (300) is recessed on a side of the support beam (2) facing the end plate (3).

8. The battery module fixing device according to claim 7, wherein, The guiding assembly comprises: A transverse plate (8) and a first vertical plate (9) and a second vertical plate (10) which are parallel to each other, the first vertical plate (9) and the second vertical plate (10) are connected by an arc connecting part (900), and a plurality of the transverse plates (8) are connected between the relatively spaced first vertical plate (9) and the second vertical plate (10) along the second direction (Y).

9. The battery module fixing device according to claim 6, wherein, The end plate (3) comprises: An installation groove (301), protruding from a side of the end plate (3) away from the battery module (100), a groove bottom (302) of the installation groove (301) facing the battery box panel (1) is used for abutting against the support beam (2) installed in the clamping groove (300), and bolt holes are provided on the groove bottom (302); Wherein, a fixing hole (202) matching the bolt hole is provided on a side of the support beam (2) away from the battery box plate (1), and the end plate (3) and the support beam (2) are fixedly connected by inserting a connecting member (303) into the bolt hole and the fixing hole (202).

10. A battery pack, characterized in that, Comprising: A plurality of battery modules (100), each of the battery modules comprising a plurality of battery cells; And The battery module fixing device according to any one of claims 1 to 9, wherein the battery modules (100) are respectively installed in an installation cavity formed between the end plates (3) arranged at a relative interval.

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