Battery cell support

Abstract

The utility model discloses a battery cell support which comprises a head end support, a tail end support and a connecting support, the head end support, the connecting support and the tail end support respectively comprise a horizontal plate and a vertical plate, the horizontal plates and the vertical plates are connected to form an L-shaped structure, and battery cell insulating film windowing reserved through holes are symmetrically formed in the two ends of the horizontal plates; a first buckle is connected to the center of the horizontal plate of the head end bracket and the connecting bracket; a second clamping groove is formed in the horizontal plate of the head end bracket and the connecting bracket and between the first buckle and the cell insulating film windowing reserved through hole; vertical plates of the connecting bracket and the tail end bracket are provided with first clamping grooves corresponding to the first clamping buckles and are provided with second clamping buckles corresponding to the second clamping grooves; the side edge of the horizontal plate of the tail end support is connected with an end plate. According to the utility model, the distance between the battery cells can be accurately controlled, a space for breathing expansion of the battery cells is reserved, the battery cell bracket can support the battery cells, the structural stability is enhanced, the heat exchange area between the battery cells and the heat exchange structure is relatively increased, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of internal brackets of battery packs, and in particular relates to a battery core bracket. Background Art

[0002] The battery cell will swell slightly during the normal charge and discharge cycle. This is mainly due to the gas produced by the chemical reaction inside the battery, which makes the battery appearance swell slightly like breathing. The emergence of expansion force will cause harm to the battery cell and module. If not handled properly, it may lead to the degradation of battery cell performance and life.

[0003] Currently, most batteries are grouped in a Cell-To-Pack manner, where the cells are placed directly into the battery pack. The expansion force of the cells is dealt with mainly by reserving an expansion gap and filling buffer insulation materials between the cells to absorb the expansion generated during the charge and discharge cycles of the cells. Currently, some minimalist designs remove the buffer insulation materials between the cells and reserve a fixed distance between the cells. However, when the mechanical gripper places the cells, there is a problem that the distance between the cells cannot be accurately controlled, resulting in the spacing between the cells in the finished battery pack being too large or too narrow, which can easily lead to no effective space for the cells to expand, thereby causing the cell performance to deteriorate and increasing the risk of thermal runaway in the battery pack. Utility Model Content

[0004] The purpose of the utility model is to provide a battery cell bracket, which can accurately control the distance between battery cells and leave space for the battery cells to breathe and expand. The battery cell bracket can provide support for the battery cells, enhance structural stability, relatively increase the heat exchange area between the battery cells and the heat exchange structure, and improve the heat exchange efficiency.

[0005] To achieve the above-mentioned purpose, the utility model battery cell bracket includes a head end bracket, a terminal bracket and a plurality of connecting brackets, wherein the head end bracket, the connecting bracket and the terminal bracket all include a horizontal plate and a vertical plate, and the horizontal plate and the vertical plate are connected to form an L-shaped structure, and both ends of all horizontal plates are symmetrically provided with reserved through holes for opening windows of battery cell insulation films;

[0006] A first buckle parallel to the vertical plate is centrally connected to the horizontal plate of the head end bracket and the connecting bracket, and a second clamping groove is provided between the first buckle and the reserved through hole for opening the cell insulation film on the horizontal plate of the head end bracket and the connecting bracket;

[0007] A first buckle is provided on the vertical plate of the connecting bracket and the end bracket to match the first buckle, and a second buckle is provided to match the second buckle to match the second buckle;

[0008] The side edges of the horizontal plates of the end brackets are connected with end plates parallel to the vertical plates.

[0009] As a further solution of the utility model: the first buckle and the first slot are both T-shaped structures, and the first buckle and the first slot are spliced ​​to form a plane.

[0010] As a further solution of the present invention: the second slot is a U-shaped structure, which is spliced ​​with the second buckle to form a plane.

[0011] As a further solution of the utility model: the battery cell bracket is made of high-conductivity material.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. Through the cooperation between the head end bracket, the connecting bracket and the end bracket, the distance between the battery cells can be set evenly, ensuring the expansion gap of the battery cells;

[0014] 2. By designing the first buckle and the second buckle of different shapes, the battery holder is ensured to be firmly matched and no relative displacement occurs;

[0015] 3. The battery cell bracket is made of high thermal conductivity material, which increases the contact area between the heat exchange component and the battery cell, thereby increasing the heat exchange capacity;

[0016] 4. The cell bracket is arranged between each row of cells, which can replace the horizontal and vertical beams in the battery pack and support the cells inside the battery pack;

[0017] 5. The setting of reserved through holes in the cell insulation film ensures that the cell can be directly fixed on the heat exchange component, reducing the risk of cell bonding failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the battery cell bracket.

[0019] Figure 2 This is a schematic diagram of the battery holder in use.

[0020] In the figure: 1. head end bracket, 2. connecting bracket, 3. end bracket, 4. horizontal plate, 5. vertical plate, 6. first slot, 7. end plate, 8. reserved through hole for opening window of battery cell insulation film, 9. second buckle, 10. second slot, 11. first buckle, 12. battery cell. DETAILED DESCRIPTION

[0021] The utility model will be further described below in conjunction with the accompanying drawings.

[0022] like Figure 1As shown, the battery cell bracket includes a head end bracket 1, a terminal bracket 3 and a plurality of connecting brackets 2, wherein the head end bracket 1, the connecting bracket 2 and the terminal bracket 3 all include a horizontal plate 4 and a vertical plate 5, and the horizontal plate 4 and the vertical plate 5 are connected to form an L-shaped structure, and both ends of all horizontal plates 4 are symmetrically provided with reserved through holes 8 for opening windows of battery cell insulation films, thereby ensuring that the battery cell can be directly fixed on the heat exchange component, reducing the risk of battery cell bonding failure;

[0023] A first buckle 11 parallel to the vertical plate 5 is centrally connected to the horizontal plate 4 of the head end bracket 1 and the connecting bracket 2, and a second clamping groove 10 is provided between the first buckle 11 and the reserved through hole 8 for opening the cell insulation film on the horizontal plate 4 of the head end bracket 1 and the connecting bracket 2;

[0024] The vertical plate 5 connecting the bracket 2 and the end bracket 3 is provided with a first snap groove 6 corresponding to the first snap groove 11, and a second snap groove 9 corresponding to the second snap groove 10;

[0025] The side edge of the horizontal plate 4 of the end bracket 3 is connected with an end plate 7 parallel to the vertical plate 5 .

[0026] The head end bracket 1, several connecting brackets 2 and the end bracket 3 are spliced ​​together, and the distance between the battery cells is controlled by the thickness of the vertical plate 5 of the battery cell bracket. The thickness of the plate can be selected according to actual needs. The first clip 11 cooperates with the first clip 11, and the second clip 9 cooperates with the second slot 10, which can avoid phase movement of the battery cell bracket; in addition, one battery cell will be pressed on the combined part of two of the head end bracket 1, the end bracket 3 and the connecting bracket 2, so that the weight of the battery cell can be used to ensure the stability of the connection between the battery cells.

[0027] The structural design of the head end bracket 1 and the end bracket 3 is different from that of the connecting bracket 2, which enables the side of the battery cell bracket to be flush with the side wall of the battery box after the battery pack is installed.

[0028] To facilitate assembly, further, the first buckle 11 and the first slot 6 are both T-shaped structures, and the first buckle 11 and the first slot 6 are spliced ​​to form a plane.

[0029] Furthermore, the second slot 10 is a U-shaped structure, and is spliced ​​with the second buckle 9 to form a plane.

[0030] When the utility model is actually used, Figure 2 As shown, the battery cell brackets are spliced ​​and assembled in the order of a head end bracket 1, a plurality of connecting brackets 2, and an end bracket 3. The bottom of the battery cell bracket can be directly fixed to the heat exchange component by means of thermal conductive adhesive. Space is formed between the head end bracket 1 and the connecting bracket 2, between adjacent connecting brackets 2, and between the connecting bracket 2 and the end bracket 3 for installing and placing the battery cell 12.

Claims

1. A cell support, comprising a head end support (1), a terminal support (3) and a plurality of connecting supports (2), characterized in that: The head end bracket (1), the connecting bracket (2) and the end bracket (3) all include a horizontal plate (4) and a vertical plate (5), and the horizontal plate (4) and the vertical plate (5) are connected to form an L-shaped structure, and both ends of all the horizontal plates (4) are symmetrically provided with reserved through holes (8) for opening windows of the cell insulation film; A first buckle (11) parallel to the vertical plate (5) is centrally connected to the horizontal plate (4) of the head end bracket (1) and the connecting bracket (2), and a second clamping groove (10) is provided on the horizontal plate (4) of the head end bracket (1) and the connecting bracket (2) between the first buckle (11) and the reserved through hole (8) for opening the window of the cell insulation film; A first snap groove (6) is provided on the vertical plate (5) connecting the connecting bracket (2) and the end bracket (3) to match the first snap groove (11), and a second snap groove (9) is provided to match the second snap groove (10); The side edge of the horizontal plate (4) of the end bracket (3) is connected to an end plate (7) parallel to the vertical plate (5).

2. The battery cell support according to claim 1, characterized in that: The first buckle (11) and the first slot (6) are both T-shaped structures, and the first buckle (11) and the first slot (6) are spliced ​​to form a plane.

3. The battery cell support according to claim 1 or 2, characterized in that: The second clamping groove (10) is a U-shaped structure and is spliced ​​with the second clamping buckle (9) to form a plane.

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