Sheet metal end plate battery module

Abstract

The utility model discloses a sheet metal end plate battery module, which comprises a shell, a plurality of battery cells, two sheet metal end plates and at least one binding band, the plurality of battery cells are sequentially laminated along the front and back direction, the two sheet metal end plates symmetrically cover the front and back sides of the plurality of battery cells, a silica gel pad is clamped between two adjacent battery cells, and the binding band is arranged between the two adjacent battery cells. The two metal plate end plates and the plurality of battery cells are bound and fixed through the binding band to form a battery cell module, the battery cell module is arranged in the shell, the periphery of the battery cell module is provided with buffer foam, and the buffer foam is clamped between the battery cell module and the inner wall of the shell. According to the utility model, the battery cell module can be reliably fixed, the space is saved, and the number of battery cells can be expanded.

Description

Technical Field

[0001] This utility model relates to battery modules, and more particularly to a sheet metal end plate battery module. Background Technology

[0002] Battery modules typically consist of multiple cells arranged side-by-side, connected sequentially by copper busbars. In existing battery modules, the two ends of the cells are clamped using die-cast aluminum end plates or extruded aluminum end plates. The thickness of the end plates is generally greater than 20mm, requiring a large amount of internal space. When the battery box space is limited, it is difficult to arrange batteries with sufficient capacity. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a sheet metal end plate battery module that can reliably fix the battery cell module, save space, and facilitate the expansion of the number of battery cells, in order to address the shortcomings of the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0005] A sheet metal end plate battery module includes a shell, multiple battery cells, two sheet metal end plates, and at least one strap. The multiple battery cells are stacked sequentially in a front-to-back direction. The two sheet metal end plates symmetrically cover the front and rear sides of the multiple battery cells. A silicone pad is sandwiched between two adjacent battery cells. The two sheet metal end plates and the multiple battery cells are bound and fixed together by the strap to form a battery cell module. The battery cell module is disposed inside the shell. Buffer foam is provided around the battery cell module and is sandwiched between the battery cell module and the inner wall of the shell.

[0006] Preferably, the battery cell is a square battery cell, and the outer casing is a cuboid outer casing.

[0007] Preferably, the electrodes at the top of two adjacent cells are connected by a copper busbar.

[0008] Preferably, the battery cell module includes two parallel straps.

[0009] Preferably, an insulating protective sheet is sandwiched between the sheet metal end plate and the battery cell.

[0010] Preferably, the sheet metal end plate is a square end plate.

[0011] Preferably, the upper and lower ends of the sheet metal end plate are respectively formed with an upper bending portion and a lower bending portion, the upper bending portion bending towards the top of the battery cell, and the lower bending portion bending towards the bottom of the battery cell.

[0012] Preferably, the left and right ends of the sheet metal end plate are respectively formed with a left bend and a right bend, and the left bend and the right bend respectively cover the left and right ends of the battery cell.

[0013] In the sheet metal end plate battery module disclosed in this utility model, multiple battery cells are stacked sequentially. Two sheet metal end plates are symmetrically arranged at the front and rear ends of the stacked battery cells. The two sheet metal end plates protect the stacked battery cells. At the same time, a silicone pad is sandwiched between two adjacent battery cells. When the straps are tied to the outside of the two sheet metal end plates and the battery cells, the battery cell module can be reliably fixed, and the elasticity of the silicone pads can be utilized to increase the expansion space between adjacent battery cells. In addition, because the sheet metal end plates are thinner and lighter, they can effectively save space, which is conducive to arranging a larger number of battery cells in the shell, thereby increasing the energy storage capacity and better meeting the application requirements. Attached Figure Description

[0014] Figure 1 This is an exploded view of the sheet metal end plate battery module.

[0015] Figure 2 This is an exploded view of the battery cell module;

[0016] Figure 3 This is a 3D view of the sheet metal end plate. Detailed Implementation

[0017] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments.

[0018] This utility model discloses a sheet metal end plate battery module, combined with Figures 1 to 3 As shown, it includes a housing 1, multiple battery cells 2, two sheet metal end plates 3, and at least one strap 4. The multiple battery cells 2 are stacked sequentially in the front-to-back direction. The two sheet metal end plates 3 symmetrically cover the front and back sides of the multiple battery cells 2. A silicone pad 5 is sandwiched between two adjacent battery cells 2. The two sheet metal end plates 3 and the multiple battery cells 2 are bound and fixed by the strap 4 to form a battery cell module. The battery cell module is located inside the housing 1. Buffer foam 6 is provided around the battery cell module. The buffer foam 6 is sandwiched between the battery cell module and the inner wall of the housing 1.

[0019] In the above structure, multiple battery cells 2 are stacked sequentially, and two sheet metal end plates 3 are symmetrically arranged at the front and rear ends of the stacked battery cells 2. The two sheet metal end plates 3 protect the stacked battery cells 2. At the same time, a silicone pad 5 is sandwiched between two adjacent battery cells 2. When the strap 4 is tied to the outside of the two sheet metal end plates 3 and the multiple battery cells 2, it can not only reliably fix the battery cell module, but also give full play to the elasticity of the silicone pad 5, thereby increasing the expansion space between adjacent battery cells 2. In addition, because the sheet metal end plates 3 are thinner and lighter, they can effectively save space, which is conducive to arranging a larger number of battery cells 2 in the outer shell 1, thereby increasing the energy storage capacity and better meeting the application requirements.

[0020] Please see Figure 1 As a preferred embodiment, the battery cell 2 is a square battery cell, and the outer casing 1 is a cuboid outer casing.

[0021] For the preferred connection method between two adjacent cells 2, please refer to [link / reference]. Figure 2 In this embodiment, the electrodes at the top of two adjacent cells 2 are connected by a copper busbar 7.

[0022] In order to reliably fix the battery cell module with the straps 4, in this embodiment, the battery cell module includes two parallel straps 4.

[0023] Please see Figure 2 In this embodiment, an insulating protective sheet 8 is sandwiched between the sheet metal end plate 3 and the battery cell 2. The insulating protective sheet 8 is shaped to match the sheet metal end plate 3, and it completely covers the surface of the battery cell 2, thereby preventing direct contact between the battery cell 2 and the sheet metal end plate 3.

[0024] Please see Figure 2 and Figure 3 In this embodiment, the sheet metal end plate 3 is a square end plate.

[0025] As a preferred embodiment, the upper and lower ends of the sheet metal end plate 3 are respectively formed with an upper bending portion 30 and a lower bending portion 31. The upper bending portion 30 bends towards the top of the battery cell 2, and the lower bending portion 31 bends towards the bottom of the battery cell 2. Further, the left and right ends of the sheet metal end plate 3 are respectively formed with a left bending portion 32 and a right bending portion 33, which respectively cover the left and right ends of the battery cell 2.

[0026] In the above structure, the upper bend 30, lower bend 31, left bend 32 and right bend 33 respectively cover the battery cell 2 adjacent to the sheet metal end plate 3. During actual binding, the two binding straps 4 are wrapped around the outside of the upper bend 30 and the lower bend 31. The purpose is to prevent the binding straps 4 from directly contacting the battery cell 2 and to avoid the battery cell 2 from bearing the pressure brought by the binding straps 4.

[0027] The sheet metal end plate battery module disclosed in this utility model has the following features: In practical applications, the surface of the battery cell is covered with a silicone pad. When multiple cells are stacked sequentially, the silicone pads between adjacent cells act as a buffer, increasing the expansion space between the cells. Simultaneously, insulating sheets and sheet metal end plates are attached to both ends of the battery cell module. The insulating sheets isolate the battery cell from the end plate and provide insulation, preventing the metal end plate from piercing the blue film on the battery cell surface and causing poor insulation. Furthermore, the entire battery cell module is bound with straps, which not only secure the module but also withstand the expansion force during battery cell use. Further, the sheet metal end plate is made of thin steel with four bent sides to hold the battery cell in place and provide positioning. After assembly, the sheet metal end plate also resists the expansion force of the battery cell. Additionally, the battery cell module can be fixed to the bottom of the outer casing by applying structural adhesive, and cushioning foam is placed around the battery cell module for protection.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. All modifications, equivalent substitutions or improvements made within the technical scope of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A sheet metal end plate battery module, characterized in that, The device includes a housing (1), multiple battery cells (2), two sheet metal end plates (3), and at least one strap (4). The multiple battery cells (2) are stacked sequentially in the front-to-back direction. The two sheet metal end plates (3) symmetrically cover the front and back sides of the multiple battery cells (2). A silicone pad (5) is sandwiched between two adjacent battery cells (2). The two sheet metal end plates (3) and the multiple battery cells (2) are bound and fixed by the strap (4) to form a battery cell module. The battery cell module is located inside the housing (1). Buffer foam (6) is provided around the battery cell module. The buffer foam (6) is sandwiched between the battery cell module and the inner wall of the housing (1).

2. The sheet metal end plate battery module as described in claim 1, characterized in that, The battery cell (2) is a square battery cell, and the outer casing (1) is a rectangular outer casing.

3. The sheet metal end plate battery module as described in claim 1, characterized in that, The electrodes at the top of two adjacent cells (2) are connected by a copper busbar (7).

4. The sheet metal end plate battery module as described in claim 1, characterized in that, The battery cell module includes two parallel straps (4).

5. The sheet metal end plate battery module as described in claim 1, characterized in that, An insulating protective sheet (8) is sandwiched between the sheet metal end plate (3) and the battery cell (2).

6. The sheet metal end plate battery module as described in claim 1, characterized in that, The sheet metal end plate (3) is a square end plate.

7. The sheet metal end plate battery module as described in claim 6, characterized in that, The upper and lower ends of the sheet metal end plate (3) are respectively formed with an upper bending part (30) and a lower bending part (31). The upper bending part (30) bends towards the top of the battery cell (2), and the lower bending part (31) bends towards the bottom of the battery cell (2).

8. The sheet metal end plate battery module as described in claim 6, characterized in that, The sheet metal end plate (3) has a left bend (32) and a right bend (33) formed at its left and right ends, respectively, and the left bend (32) and the right bend (33) cover the left and right ends of the battery cell (2), respectively.

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