Battery cell assembling shell for battery module

Abstract

The utility model relates to the technical field of battery packs, in particular to a battery cell assembly shell for a battery module, which comprises end plates and side plates, the end plates are mutually supported, the side plates are mutually symmetrical, the two end plates and the two side plates are mutually connected to form a rectangular frame, and an inner cavity of the rectangular frame is used for mounting a battery cell; the end plate comprises end plate supporting columns which are arranged on the two sides and are symmetrical to each other, and each end plate supporting column is provided with an arc-shaped connecting part. Correspondingly, the side plates comprise arc-shaped baffles which are arranged at the two ends and are symmetrical to each other. The two end plates and the two side plates are connected with each other through the connection of the arc-shaped baffles and the arc-shaped connecting parts, and the rectangular frame body is formed. Compared with the problems that interference is easy to form, the fixing effect is poor and disassembly and maintenance are inconvenient when a plurality of battery cells are mutually bonded through mucilage glue in the prior art, effective improvement can be carried out through the scheme, and the assembly or disassembly maintenance efficiency of the battery cells can be remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a battery core assembly shell for a battery module. Background Art

[0002] At present, new energy vehicles have attracted wide attention from all walks of life due to their excellent environmental performance. The requirements for new energy vehicles are also constantly increasing. As a new energy vehicle, electric vehicles are also developing in the direction of high safety, high energy ratio and light weight. The main factor that determines the mileage of electric vehicles is the power supply battery. Different specifications of power supply batteries can be selected for different models to meet driving requirements.

[0003] The power supply battery for electric vehicles is generally a battery pack composed of multiple battery modules, that is, multiple battery modules are stacked up and down in the same box, and then the battery modules are connected. The core battery module is generally configured with a corresponding number of cells according to the size of the required output voltage, and then all the cells are connected to output the voltage.

[0004] In traditional technology, multiple cells in a battery module are connected by bonding with adhesive. This method not only causes interference between the cells, but also makes it very troublesome to disassemble and repair the cells.

[0005] Therefore, a new technical solution is urgently needed to solve the above technical problems. Utility Model Content

[0006] The purpose of the utility model is to overcome the above-mentioned problems of the prior art and to provide a cell assembly shell for a battery module, which is used to solve the technical problems that in the traditional technology, multiple cells are easily interfered with each other when glue is used to bond them to each other, the fixing effect is poor, and it is inconvenient to disassemble and repair them later.

[0007] The above objectives are achieved through the following technical solutions:

[0008] A battery cell assembly shell for a battery module, comprising end plates supporting each other and side plates symmetrical to each other, wherein two end plates and two side plates are connected to each other to form a rectangular frame, and the inner cavity of the rectangular frame is used to install the battery cell;

[0009] The end plate includes symmetrical end plate support columns arranged on both sides, and each end plate support column is provided with an arc-shaped connecting portion; correspondingly, the side plate includes symmetrical arc-shaped baffles arranged on both ends;

[0010] By connecting the arc-shaped baffle plate with the arc-shaped connecting portion, the two end plates and the two side plates are connected to each other to form the rectangular frame.

[0011] Furthermore, the arc-shaped connecting portion is vertically arranged on the end plate supporting column.

[0012] Furthermore, vertical ribs are provided on the inner wall of the arc-shaped baffle, and correspondingly, strip grooves corresponding to the ribs are provided on the arc-shaped connecting portion.

[0013] Furthermore, a vertical T-shaped slide rail is provided on the inner wall of the arc-shaped baffle, and correspondingly, a T-shaped slide groove corresponding to the T-shaped slide rail is provided on the arc-shaped connecting portion.

[0014] Further, the height of the end plate is greater than the height of the side plate, and correspondingly, the length of the arc-shaped connecting portion is greater than the length of the arc-shaped baffle.

[0015] Furthermore, the curvature of the arc-shaped baffle is 90°, and correspondingly, the curvature of the arc-shaped connecting portion is 90°.

[0016] Furthermore, a side plate lining plate corresponding to the side plate and an end plate lining plate corresponding to the end plate are provided on the inner wall of the rectangular frame; the two side plate lining plates and the two end plate lining plates constitute a battery cell installation cavity.

[0017] Furthermore, the height of the end plate lining plate is smaller than the height of the end plate, and the height of the side plate lining plate is smaller than the height of the side plate.

[0018] Furthermore, a U-shaped partition is provided between adjacent battery cells.

[0019] Furthermore, a bottom plate connecting portion is provided at the lower portion of the outer wall of the side plate, for connecting the bottom plate provided below the rectangular frame. Beneficial Effects

[0020] The utility model provides a battery cell assembly shell for a battery module. The shell has a simple structure and can be quickly assembled through two end plates and two side plates. The length of the side plates can be set according to power requirements to meet the assembly of different numbers of battery cells. Compared with the traditional technology that uses adhesive to bond multiple battery cells to each other, it is easy to cause interference, has a poor fixing effect, and is inconvenient for later disassembly and maintenance. The present solution can effectively improve it and significantly improve the efficiency of assembly or disassembly and maintenance of the battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a battery cell assembly shell for a battery module according to the utility model;

[0022] Figure 2This is an exploded view of a battery cell assembly shell for a battery module according to the utility model;

[0023] Figure 3 It is a structural schematic diagram of ribs and strip grooves of a battery cell assembly shell for a battery module according to the utility model;

[0024] Figure 4 It is a structural schematic diagram of a T-shaped slide rail and a T-shaped slide groove of a battery cell assembly shell for a battery module according to the utility model;

[0025] Figure 5 It is a schematic diagram of a side plate lining plate and an end plate lining plate of a battery cell assembly shell for a battery module according to the utility model;

[0026] Figure 6 This is a schematic diagram of a core assembly shell with a U-shaped partition for a battery module according to the utility model;

[0027] Figure 7 This is a schematic diagram of the application of a cell assembly shell for a battery module described in the utility model.

[0028] Graphic marking:

[0029] 1-end plate, 101-end plate support column, 102-arc-shaped connecting part, 103-strip groove, 104-T-shaped slide groove;

[0030] 2-side plate, 201-arc baffle, 202-rib, 203-T-shaped slide rail, 204-bottom plate connecting part;

[0031] 3- rectangular frame;

[0032] 4-Battery cell;

[0033] 5-side panel lining;

[0034] 6-End plate lining;

[0035] 7-battery cell installation cavity;

[0036] 8-U-shaped partition. DETAILED DESCRIPTION

[0037] The utility model is further described in detail below based on the accompanying drawings and embodiments. The described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] like Figure 1 , 2As shown in FIG. 7 , the present invention provides a cell assembly housing for a battery module, comprising end plates 1 supporting each other, and side plates 2 symmetrical to each other, wherein two end plates 1 and two side plates 2 are connected to each other to form a rectangular frame 3, and the inner cavity of the rectangular frame 3 is used to install a cell 4;

[0039] The end plate 1 includes symmetrical end plate support columns 101 arranged on both sides, and each end plate support column 101 is provided with an arc-shaped connecting portion 102; correspondingly, the side plate 2 includes symmetrical arc-shaped baffles 201 arranged on both ends; it should be noted that the arc-shaped baffles 201 and the arc-shaped connecting portion 102 can be fixed by welding or gluing;

[0040] By connecting the arc-shaped baffle 201 with the arc-shaped connecting portion 102 , the two end plates 1 and the two side plates 2 are connected to each other to form the rectangular frame 3 .

[0041] It should be noted that in this embodiment, the arc-shaped connecting portion 102 is vertically arranged on the end plate support column 101; and the height of the end plate 1 is greater than the height of the side plate 2, and correspondingly, the length of the arc-shaped connecting portion 102 is greater than the length of the arc-shaped baffle 201.

[0042] In this embodiment, the arc angle of the arc-shaped baffle 201 is 90°, and correspondingly, the arc angle of the arc-shaped connecting portion 102 is 90°. This structure can achieve a perfect fit between the two and realize a vertical connection between the end plate 1 and the side plate 2.

[0043] In addition, the present solution also provides two structures that can realize the rapid assembly of the side plate 2 and the end plate 1, including:

[0044] The first type, such as Figure 3 As shown, vertical ribs 202 are provided on the inner wall of the arc-shaped baffle plate 201, and correspondingly, strip grooves 103 corresponding to the ribs 202 are provided on the arc-shaped connecting portion 102; by quickly embedding the ribs 202 and the strip grooves 103, the arc-shaped baffle plate 201 can be quickly and accurately aligned with the arc-shaped connecting portion 102.

[0045] The second type, such as Figure 4 As shown, a vertical T-shaped slide rail 203 is provided on the inner wall of the arc-shaped baffle plate 201, and correspondingly, a T-shaped slide groove 104 corresponding to the T-shaped slide rail 203 is provided on the arc-shaped connecting portion 102; the T-shaped slide rail 203 is inserted from the upper end of the T-shaped slide groove 104, and the arc-shaped baffle plate 201 is quickly and accurately aligned with the arc-shaped connecting portion 102 by pressing down, and a limit connection is achieved.

[0046] like Figure 5 As shown, in this embodiment, a side panel lining plate 5 corresponding to the side panel 2 and an end panel lining plate 6 corresponding to the end panel 1 are also provided on the inner wall of the rectangular frame 3; the two side panel lining plates 5 and the two end panel lining plates 6 constitute a battery cell installation cavity 7.

[0047] It should be noted that the battery cell installation cavity 7 in this embodiment prevents each battery cell 4 from directly contacting the end plate 1 and the side plate 2, thereby promoting that each battery cell 4 will not be disturbed by the outside of the shell during operation, and interference factors include but are not limited to electrical conduction.

[0048] In addition, the battery cell installation cavity 7 in this embodiment can also achieve tight compaction between the battery cells 4 to ensure that the battery cells 4 will not shift.

[0049] The height of the end plate lining plate 6 is smaller than that of the end plate 1, and the height of the side plate lining plate 5 is smaller than that of the side plate 2; this structure can ensure a stable connection between the end plate lining plate 6 and the inner wall of the end plate 1, and between the side plate lining plate 5 and the inner wall of the side plate 2. In this embodiment, the end plate lining plate 5 and the inner wall of the end plate 1, and between the side plate lining plate 5 and the inner wall of the side plate 2 can be glued or welded.

[0050] like Figure 6 As shown, in this embodiment, a U-shaped partition 8 is further provided between adjacent battery cells 4 , and the U-shaped partition 8 can effectively offset the interference of each battery cell 4 on the battery cell 4 at the adjacent position due to expansion during operation.

[0051] In addition, the U-shaped partition 8 in this embodiment can also achieve tight compaction between the battery cells 4 .

[0052] As a further optimization of the present scheme, a bottom plate connecting portion 204 is provided at the lower portion of the outer wall of the side panel 2, which is used to connect the bottom plate arranged below the rectangular frame 3; since the above scheme can be adopted to ensure that the battery cell 4 installed in the rectangular frame 3 or the battery cell installation cavity 7 will not shift, and when the actual battery pack is assembled, the bottom thereof is directly installed on the support plate, and sometimes a heating film or a cooling plate is also placed on the bottom, so in the present embodiment, the bottom plate is a non-essential component and is not reflected in the drawings of the specification; however, in order to adapt to some special situations, the present shell is pre-set with the bottom plate connecting portion 204 for installing the bottom plate, and the two sides of the bottom plate are required to have upward folded edges so as to achieve glue bonding or welding with the bottom plate connecting portion 204.

[0053] The above description is only for illustrating the implementation mode of the present utility model and is not intended to limit the present utility model. For those skilled in the art, any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A cell assembly housing for a battery module, characterized in that: It comprises end plates (1) that support each other, and side plates (2) that are symmetrical to each other, wherein two end plates (1) and two side plates (2) are connected to each other to form a rectangular frame (3), and the inner cavity of the rectangular frame (3) is used to install the battery cell (4); The end plate (1) comprises end plate support columns (101) arranged at both sides and symmetrical to each other, and each end plate support column (101) is provided with an arc-shaped connecting portion (102); correspondingly, the side plate (2) comprises arc-shaped baffles (201) arranged at both ends and symmetrical to each other; By connecting the arc-shaped baffle (201) and the arc-shaped connecting portion (102), the two end plates (1) and the two side plates (2) are connected to each other to form the rectangular frame (3).

2. The battery cell assembly housing for a battery module according to claim 1, characterized in that: The arc-shaped connecting portion (102) is vertically arranged on the end plate supporting column (101).

3. A cell assembly casing for a battery module according to claim 1 or 2, characterized in that: A vertical rib (202) is provided on the inner wall of the arc-shaped baffle (201), and correspondingly, a strip-shaped groove (103) corresponding to the rib (202) is provided on the arc-shaped connecting portion (102).

4. A cell assembly casing for a battery module according to claim 1 or 2, characterized in that: A vertical T-shaped slide rail (203) is provided on the inner wall of the arc-shaped baffle (201), and correspondingly, a T-shaped slide groove (104) corresponding to the T-shaped slide rail (203) is provided on the arc-shaped connecting portion (102).

5. A cell assembly casing for a battery module according to claim 1 or 2, characterized in that: The height of the end plate (1) is greater than the height of the side plate (2), and correspondingly, the length of the arc-shaped connecting portion (102) is greater than the length of the arc-shaped baffle (201).

6. The battery cell assembly housing for a battery module according to claim 5, characterized in that: The arc angle of the arc-shaped baffle (201) is 90°, and correspondingly, the arc angle of the arc-shaped connecting portion (102) is 90°.

7. The battery cell assembly housing for a battery module according to claim 1, characterized in that: A side plate lining plate (5) corresponding to the side plate (2) and an end plate lining plate (6) corresponding to the end plate (1) are provided on the inner wall of the rectangular frame (3); the two side plate lining plates (5) and the two end plate lining plates (6) form a cell installation cavity (7).

8. The cell assembly casing for a battery module according to claim 7, characterized in that: The height of the end plate lining plate (6) is smaller than the height of the end plate (1), and the height of the side plate lining plate (5) is smaller than the height of the side plate (2).

9. The battery cell assembly housing for a battery module according to claim 1, characterized in that: A U-shaped partition (8) is also provided between adjacent battery cells (4).

10. The battery cell assembly casing for a battery module according to claim 1, characterized in that: A bottom plate connecting portion (204) is provided at the lower portion of the outer wall of the side plate (2) for connecting to a bottom plate provided below the rectangular frame (3).

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