A battery stacking structure and a tool for accommodating the battery stacking structure

Abstract

The utility model provides a battery stacking structure and a tooling for accommodating the battery stacking structure, which relates to the photovoltaic field, including: a plurality of stacked battery cells, the back of which is provided with electrodes; at least part of the battery stacking structure is composed of a plurality of groups of battery cells; each group of battery cells includes two battery cells that are in contact with each other at the back; for two adjacent battery cells that are in contact with each other at the front in the battery stacking structure, a protective adhesive layer is provided on the front of at least one battery cell. The utility model can provide a protective adhesive layer on the front of at least one of the two battery cells that are in contact at the front, so that the protective adhesive layer can play a supporting and buffering role between the fronts of the two battery cells, thereby playing a protective effect on the front of the battery cell. In addition, the protective adhesive layer is fixed on the front of the battery cell, and the protective adhesive layer is not easy to fall off or produce position displacement, so that the protective adhesive layer can produce a continuous protective effect on the front of the battery cell.

Description

Technical Field

[0001] The utility model relates to the photovoltaic field, in particular to a battery stacking structure and a tooling for accommodating the battery stacking structure. Background Art

[0002] A back-contact cell refers to a type of cell in which the electrode pattern is printed on the backlight surface of the cell. This means that when the back-contact cells are stacked, the light-receiving surface of the cell is susceptible to friction and scratches from the electrodes on the backlight surface of another adjacent cell.

[0003] At present, a coating paper can be set between two adjacent back contact cells to protect the light-receiving surface of the cell from being scratched. Since the coating paper is an independent component, when the cell is used later, the coating paper can be removed and the cell can be disassembled.

[0004] The prior art has at least the following problems: the cost of using a large amount of laminated paper is high and the position of the laminated paper is easily offset. Utility Model Content

[0005] The utility model provides a battery stacking structure and a tool for accommodating the battery stacking structure, so as to solve the problems in the prior art.

[0006] In order to solve the above problems, the utility model is achieved as follows:

[0007] In a first aspect, the utility model provides a battery stack structure, the battery stack structure comprising:

[0008] A plurality of stacked battery cells, wherein electrodes are arranged on the back of the battery cells;

[0009] At least part of the battery stack structure is composed of multiple groups of battery cells; each group of battery cells includes two battery cells in contact with each other at the back;

[0010] For two adjacent battery cells in the battery stacking structure whose front sides are in contact with each other, a protective adhesive layer is provided on the front side of at least one battery cell.

[0011] Optionally, the electrodes of one battery cell in each group of battery cells are arranged crosswise with the electrodes of another battery cell.

[0012] Optionally, an electrode of one battery cell in each group of battery cells is perpendicular to an electrode of another battery cell.

[0013] Optionally, the electrode includes a main grid and a fine grid;

[0014] In the case where the protrusion height of the main grid is greater than the protrusion height of the fine grid, the main grid of one battery cell in each group of battery cells is arranged crosswise with the main grid of another battery cell;

[0015] In the case where the protruding height of the main grid is smaller than the protruding height of the fine grid, the fine grid of one battery cell in each group of battery cells is arranged crosswise with the fine grid of another battery cell.

[0016] Optionally, the electrode comprises only a fine grid;

[0017] The fine grids of one battery cell in each group of battery cells are arranged crosswise with the fine grids of another battery cell.

[0018] Optionally, the protective adhesive layer is a planar adhesive layer that completely covers the front side of the battery cell.

[0019] Optionally, the protective adhesive layer includes:

[0020] A plurality of protective adhesive units arranged at intervals;

[0021] The protective glue unit includes: any one of glue dots, glue strips, and glue blocks;

[0022] The protective adhesive layer is a transparent protective adhesive layer.

[0023] Optionally, for two adjacent battery cells in the battery stacking structure whose front sides are in contact with each other, a protective adhesive layer is provided on the front side of one of the battery cells.

[0024] Optionally, for two adjacent battery cells in the battery stacking structure whose front sides are in contact with each other, a portion of the protective adhesive layer is disposed on the front side of one of the battery cells, and another portion of the protective adhesive layer is disposed on the front side of the other battery cell.

[0025] In a second aspect, the utility model provides a tool for accommodating a battery stacking structure, the system comprising:

[0026] A tooling body, and a battery stacking structure arranged in the tooling body.

[0027] In the present invention, the battery stacking structure is composed of multiple groups of battery cells whose back sides are in contact with each other. Such a stacking method makes the surface contact in the stacking structure include the contact between the back sides of the battery cells in each group of battery cells and the contact between the front sides of the battery cells between the adjacent groups of battery cells. For the contact between the back sides of the battery cells, the electrodes of the two battery cells can be in contact with each other to form a support, so that the surface of the back side of the battery cells will not be scratched due to the contact of other structures, thereby playing a protective effect on the back side of the battery cells. For the contact between the front sides of the battery cells, a protective glue layer can be set on the front side of at least one of the two battery cells in contact with each other, so that the front sides of the two battery cells can play a supporting and buffering role through the protective glue layer, thereby playing a protective effect on the front side of the battery cells. In addition, since the embodiment of the present invention only sets a protective glue layer on the front side of at least one of the two adjacent battery cells in contact with each other, it is not necessary to set a protective glue layer on the front sides of all battery cells. On the basis of ensuring the protection of the front sides of the battery cells, the overall glue consumption is reduced, thereby saving related costs. In addition, the protective adhesive layer is fixed on the front side of the battery cell, and the protective adhesive layer is not easy to fall off or shift in position, so the protective adhesive layer can provide continuous protection for the front side of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic cross-sectional view of a battery stacking structure according to an embodiment of the utility model;

[0030] Figure 2 A schematic diagram of the double-sided structure of a battery cell according to an embodiment of the utility model;

[0031] Figure 3 A schematic diagram of the double-sided structure of another battery cell according to an embodiment of the utility model;

[0032] Figure 4 A schematic diagram of the cross-sectional structure of a battery cell group according to an embodiment of the utility model;

[0033] Figure 5 A schematic diagram of the cross-sectional structure of another battery cell group according to an embodiment of the utility model;

[0034] Figure 6A schematic diagram of the cross-sectional structure of a battery cell and a protective adhesive layer according to an embodiment of the utility model;

[0035] Figure 7 A schematic diagram of the front structure of a battery cell according to an embodiment of the utility model

[0036] Figure 8 It is a schematic diagram of the front structure of another battery cell according to an embodiment of the utility model;

[0037] Fig. 9 It is a schematic diagram of the front structure of another battery cell according to an embodiment of the utility model;

[0038] Fig.10 A schematic diagram of the structure of a tooling for a battery stacking structure according to an embodiment of the utility model;

[0039] Fig.11 This is a schematic diagram of the cross-sectional structure of another battery cell and protective adhesive layer according to an embodiment of the utility model. DETAILED DESCRIPTION

[0040] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can also be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0041] Reference Figure 1 The present invention provides a schematic diagram of a battery stack structure, wherein the battery stack structure includes: a plurality of stacked battery cells 10, and an electrode 20 is disposed on the back of the battery cell 10; at least part of the battery stack structure is composed of a plurality of groups of battery cells; each group of battery cells includes two battery cells 10 that are in contact with each other on the back; for two adjacent battery cells 10 that are in contact with each other on the front in the battery stack structure, a protective adhesive layer 30 is disposed on the front of at least one battery cell 10. (The figure shows a solution in which a protective adhesive layer 30 is disposed on one battery cell 10)

[0042] In the embodiment of the present utility model, refer to Figure 2 The cell 10 with the electrode 20 only arranged on the back is a back contact cell, and the front of the back contact cell can be fully exposed to sunlight, which improves the light absorption efficiency. The design of the back contact cell can also reduce the path of current transmission, reduce resistance, and improve battery performance.

[0043] Specifically, refer to Figure 1In a battery stack structure formed by stacking a plurality of stacked battery cells 10, how to ensure that both sides of the battery cells are not scratched by low-cost measures is an important research direction at present. In order to solve this problem, in the embodiment of the utility model, at least part of the battery stack structure (at least part of the battery stack structure includes an even number of battery cells, Figure 1 The entire battery stacking structure is shown in the figure) and is composed of multiple groups of battery cells A. Each group of battery cells A is composed of two battery cells 10 whose back sides are in contact with each other. Multiple groups of battery cells A are stacked to form a battery stacking structure. This stacking method allows surface contact in the stacking structure, including contact between the back sides of the battery cells in each group of battery cells A and contact between the front sides of the battery cells between adjacent groups of battery cells A.

[0044] Among them, since there is an electrode 20 on the back of the battery cell 10, the contact between the back sides of the battery cells 10 can be supported by the electrodes 20 of the two battery cells 10 contacting each other, so that the surface of the back side of the battery cell 10 will not be scratched due to contact with other structures, thereby achieving a protective effect on the back side of the battery cell 10.

[0045] Regarding the contact between the front faces of the battery cells 10 and the front faces of the battery cells 10, in order to avoid surface scratches caused by direct contact between the front faces of the two battery cells 10, the embodiment of the utility model can set a protective adhesive layer 30 on the front face of at least one of the two battery cells 10 that are in contact with each other, so that the front faces of the two battery cells 10 are not in direct contact with each other, and the protective adhesive layer 30 can play a supporting and buffering role between the front faces of the two battery cells 10, thereby playing a protective effect on the front faces of the battery cells 10. In addition, the protective adhesive layer is fixed on the front face of the battery cell, and the protective adhesive layer is not easy to fall off or produce position displacement.

[0046] Therefore, the protective adhesive layer can provide continuous protection for the front side of the battery cell.

[0047] Optionally, for two adjacent battery cells 10 that are in contact with each other on the front side in the battery stacking structure, a protective glue layer 30 is provided on the front side of one of the battery cells 10. Since the embodiment of the utility model only provides a protective glue layer on the front side of at least one of the two adjacent battery cells that are in contact with each other on the front side, it is not necessary to provide a protective glue layer on the front side of all battery cells. On the basis of ensuring the protection of the front side of the battery cells, the overall glue consumption is reduced, thereby saving related costs. Of course, in another implementation method, a protective glue layer 30 may also be provided on the front side of the two battery cells 10 that are in contact with each other on the front side, and the embodiment of the utility model is not limited to this.

[0048] For example, Figure 1In the battery stacking structure shown in FIG. 6 , the back sides of three groups of battery cells 10 in back-to-back contact are protected by the mutual support of electrodes 20, and the front sides of battery cells 10 in front contact are protected by a protective adhesive layer 30. Specifically, only the front sides of two battery cells 10 are provided with a protective adhesive layer 30, so the amount of adhesive used is relatively small.

[0049] Optionally, the protective adhesive layer is a transparent protective adhesive layer.

[0050] It should be noted that the protective adhesive layer of the embodiment of the utility model can be made of light-curing adhesive material (such as ultraviolet curing adhesive), evaporable adhesive material, degradable adhesive material, organic melt adhesive material, etc., so as to meet the processing technology requirements. In addition, the material of the protective adhesive layer used has a certain elasticity, so as to meet the protection and buffering requirements of the front of the battery cell. The protective adhesive layer is a transparent protective adhesive layer, which can make it unnecessary to remove the protective adhesive layer set on the front of the battery cell later, so that the battery cell and the protective adhesive layer can be used as a whole, and the transparent protective adhesive layer does not affect the light receiving effect of the front of the battery cell.

[0051] In the present invention, the battery stacking structure is composed of multiple groups of battery cells whose back sides are in contact with each other. Such a stacking method makes the surface contact in the stacking structure include the contact between the back sides of the battery cells in each group of battery cells and the contact between the front sides of the battery cells between the adjacent groups of battery cells. For the contact between the back sides of the battery cells, the electrodes of the two battery cells can be in contact with each other to form a support, so that the surface of the back side of the battery cells will not be scratched due to the contact of other structures, thereby playing a protective effect on the back side of the battery cells. For the contact between the front sides of the battery cells, a protective glue layer can be set on the front side of at least one of the two battery cells in contact with each other, so that the front sides of the two battery cells can play a supporting and buffering role through the protective glue layer, thereby playing a protective effect on the front side of the battery cells. In addition, since the embodiment of the present invention only sets a protective glue layer on the front side of at least one of the two adjacent battery cells in contact with each other, it is not necessary to set a protective glue layer on the front sides of all battery cells. On the basis of ensuring the protection of the front sides of the battery cells, the overall glue consumption is reduced, thereby saving related costs. In addition, the protective adhesive layer is fixed on the front side of the battery cell, and the protective adhesive layer is not easy to fall off or shift in position, so the protective adhesive layer can provide continuous protection for the front side of the battery cell.

[0052] Optional, see Figure 1 In each group of battery cells A, the electrodes 20 of one battery cell 10 are arranged crosswise with the electrodes 20 of another battery cell 10 .

[0053] In the embodiment of the utility model, the electrodes 20 of one battery cell 10 in the same group are arranged crosswise with the electrodes 20 of another battery cell 10, which means that the electrodes of the two battery cells 10 are in a relative positional relationship, and the electrodes 20 of one battery cell 10 are in a non-parallel state with the electrodes 20 of the other battery cell 10, such as Figure 1 , showing that the electrode 20 of one cell 10 is perpendicular to the electrode 20 of another cell 10. Such a cross arrangement of electrodes can form a support through the cross-over of the electrodes, thereby preventing the electrode of one cell from directly contacting the surface of another cell where the electrode is arranged, thus solving the problem of surface scratches caused by the direct contact between the electrode of one cell and the surface of another cell where the electrode is arranged, thereby improving the protection effect on the back of the cell.

[0054] Optional, see Figure 1 , the electrode 20 of one battery cell 10 in each group of battery cells A is perpendicular to the electrode 20 of another battery cell 10 .

[0055] In the embodiment of the present utility model, refer to Figure 2 It can be seen that the battery cell 10 of the embodiment of the utility model can be a rectangular structure, and the electrode 20 is parallel to one side of the battery cell 10. Considering that the sides of different battery cells need to be kept parallel to each other when the battery cells are stacked, the electrode 20 of one battery cell 10 can be arranged perpendicular to the electrode 20 of another battery cell 10, so that the electrode 20 of one battery cell 10 and the electrode 20 of another battery cell 10 can achieve effective support between the back sides of the two battery cells in the form of vertical contact, and meet the requirements of stacking the battery cells.

[0056] Optional, see Figure 3 The electrode 20 includes a main grid 21 and a fine grid 22. Figure 4 , when the protrusion height of the main grid 21 is greater than the protrusion height of the fine grid 22, the main grid 21 of one battery cell 10 in each group of battery cells A is arranged crosswise with the main grid 21 of another battery cell 10; Figure 5 In the case where the protrusion height of the main grid 21 is smaller than the protrusion height of the fine grid 22 , the fine grid 22 of one battery cell 10 in each group of battery cells A is arranged crosswise with the fine grid 22 of another battery cell 10 .

[0057] In the embodiment of the present utility model, refer to Figure 3 , which shows a schematic diagram of the double-sided specific structure of a battery cell. For a back-contact battery in which both the electrode and the electrode are arranged on the back of the battery cell, the electrode can specifically include a main grid 21 and a fine grid 22, and the main grid 21 is perpendicular to the fine grid 22.

[0058] Reference Figure 4In the case where the protrusion height of the main grid 21 of the battery cell 10 is greater than the protrusion height of the fine grid 22, when two adjacent battery cells 10 are stacked, the main grids 21 on the back of each battery cell 10 first contact each other. In the embodiment of the utility model, the main grid 21 of one battery cell 10 in each group of battery cells A can be arranged crosswise with the main grid 21 of another battery cell 10 (preferably Figure 4 In the mutually perpendicular arrangement mode in the embodiment, the main grids are crossed to form a support, and the fine grids are short in height. Under the premise that the main grids have formed a support, the fine grids will not contact the back side of the other battery cell facing each other, thereby avoiding direct contact between the electrode of one battery cell and the surface on which the electrode of another battery cell is arranged, thus solving the problem of surface scratches caused by direct contact between the electrode of one battery cell and the surface on which the electrode of another battery cell is arranged, thereby improving the protection effect on the back side of the battery cell.

[0059] Reference Figure 5 In the case where the protrusion height of the main grid 21 of the battery cell 10 is less than the protrusion height of the fine grid 22, when two adjacent battery cells 10 are stacked, the fine grids 22 on the back sides of each battery cell 10 first contact each other. In the embodiment of the utility model, the fine grid 221 of one battery cell 10 in each group of battery cells A can be arranged crosswise with the fine grid 22 of another battery cell 10 (preferably Figure 5 In the mutually perpendicular arrangement mode in the embodiment, the fine grids are crossed to form a support, and the main grid is short in height. Under the premise that the fine grids have formed a support, the main grid will not contact the back side of the other battery cell facing it, thereby avoiding direct contact between the electrode of one battery cell and the surface of another battery cell where the electrode is arranged, thus solving the problem of surface scratches caused by direct contact between the electrode of one battery cell and the surface of another battery cell where the electrode is arranged, thereby improving the protection effect on the back side of the battery cell.

[0060] It should be noted that if the protruding height of the main grid of the battery cell is equal to the protruding height of the fine grid, since the main grid of the battery cell is perpendicular to the fine grid, there is no need to consider the arrangement of the electrodes of one battery cell and the electrodes of another battery cell in each group of battery cells, and the arrangement between the two is not specifically limited in the embodiments of the utility model.

[0061] Optionally, the electrode only includes fine grids; the fine grids of one battery cell in each group of battery cells are arranged crosswise with the fine grids of another battery cell.

[0062] In the embodiment of the present utility model, refer to Figure 1If the battery cell is a 0BB battery cell (which can reduce silver consumption, increase power, and improve yield), the electrode 20 of the battery cell only includes fine grids, and the fine grids of one battery cell in each group of battery cells are arranged crosswise with the fine grids of another battery cell (preferably arranged perpendicularly to each other). In this way, support is formed by the mutual crossing of the fine grids, which solves the problem of surface scratches caused by direct contact between the electrode of one battery cell and the surface of another battery cell where the electrode is arranged, thereby improving the protection effect on the back of the battery cell.

[0063] Optionally, in one implementation, refer to Figure 6 The protective adhesive layer 30 is a planar adhesive layer that completely covers the front side of the battery cell 10 .

[0064] In the embodiment of the utility model, the protective adhesive layer 30 is a flat adhesive layer that completely covers the front side of the battery cell 10, which can increase the protection area of ​​the protective adhesive layer 30 on the front side of the battery cell 10, thereby completely avoiding scratches and damage to the front side of the battery cell 10, and has a better protection effect.

[0065] Optionally, the protective adhesive layer includes: a plurality of protective adhesive units arranged at intervals; the protective adhesive units include: any one of adhesive dots, adhesive strips, and adhesive blocks.

[0066] In the embodiment of the utility model, in order to further reduce the amount of glue used, thereby saving production costs, the protective glue layer can be set to include multiple protective glue units arranged at intervals; the protective glue unit includes: any one of glue dots, glue strips, and glue blocks. In this way, there is no need to completely cover the front of the battery cell with a flat glue layer, saving glue.

[0067] Reference Figure 7 , which shows that the protective glue unit 21 is in the form of glue dots, and the glue dots can be distributed in an array on the front side of the battery cell 10. Figure 8 , which shows that the protective glue unit 21 is in the form of glue strips, and the glue strips can be distributed in an array on the front side of the battery cell 10. Fig. 9 , which shows that the protective glue unit 21 is in the form of glue blocks, which can be distributed in an array on the front of the battery cell 10. Regardless of the form of the protective glue unit, it can form effective support, isolation and buffer on the front of the battery cell, thereby effectively protecting the front of the battery cell.

[0068] Reference Fig.10 An embodiment of the utility model provides a tool for accommodating a battery stacking structure, including: a tool body 40, and a battery stacking structure arranged in the tool body 40.

[0069] In the embodiment of the utility model, the tool body 40 is used to fix, store and transport the battery stack structure, and to provide overall external protection for the battery stack structure. The part of the tool body 40 that contacts the battery stack structure can also be filled with a buffer (such as foam, silicone plate, wool pad, etc.) to further improve the protection effect.

[0070] Optional, see Fig.11 The present invention provides another schematic diagram of a cross-sectional structure of a battery cell and a protective adhesive layer. For two adjacent battery cells 10 in a battery stack structure that are in contact with each other on the front side, one of the battery cells 10 is provided with a portion of a protective adhesive layer 30 on the front side, and the other battery cell

[0071] Another portion of the protective adhesive layer 30 is disposed on the front side of the housing 10 .

[0072] In another implementation of the embodiment of the present application, for two adjacent battery cells 10 that are in contact with each other on the front side in the battery stack structure, a portion of the protective adhesive layer 30 may be provided on the front side of one of the battery cells 10, and another portion of the protective adhesive layer 30 may be provided on the front side of the other battery cell 10, such as Fig.11 In the figure, a part of the protective adhesive layer 30 can be set on the left side of the front side of the upper battery cell 10, and another part of the protective adhesive layer 30 can be set on the other side of the front side of the lower battery cell 10, so that the protective adhesive layer 20 is divided into two left and right parts, and respectively set on the front sides of the two battery cells 10 that are in contact with each other at the front. When the two battery cells 10 are stacked, a part of the protective adhesive layer 30 and another part of the protective adhesive layer 30 do not overlap with each other. This design method can also enable the protective adhesive layer to play a supporting and buffering role between the front sides of the two battery cells when the battery cells are stacked, thereby protecting the front sides of the battery cells.

[0073] In summary, in the present invention, the battery stacking structure is composed of multiple groups of battery cells whose back surfaces are in contact with each other. Such a stacking method makes the surface contact in the stacking structure include the contact between the back surfaces of the battery cells in each group of battery cells and the contact between the front surfaces of the battery cells between the adjacent groups of battery cells. For the contact between the back surfaces of the battery cells, the electrodes of the two battery cells can be in contact with each other to form a support, so that the surface of the back surface of the battery cell will not be scratched due to the contact of other structures, thereby playing a protective effect on the back surface of the battery cell. For the contact between the front surfaces of the battery cells, a protective glue layer can be set on the front surface of at least one of the two battery cells in contact with each other, so that the front surfaces of the two battery cells can play a supporting and buffering role through the protective glue layer, thereby playing a protective effect on the front surface of the battery cell. In addition, since the embodiment of the present invention only sets a protective glue layer on the front surface of at least one of the two adjacent battery cells in contact with each other, it is not necessary to set a protective glue layer on the front surface of all battery cells. On the basis of ensuring the protection of the front surface of the battery cell, the overall glue consumption is reduced, thereby saving related costs. In addition, the protective adhesive layer is fixed on the front side of the battery cell, and the protective adhesive layer is not easy to fall off or shift in position, so the protective adhesive layer can provide continuous protection for the front side of the battery cell.

[0074] The terms "first", "second", etc. in the specification and claims of the present utility model are used to distinguish similar objects, but not to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present utility model can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of one type, and the number of objects is not limited. For example, the first object can be one or more. In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The above description is only a preferred embodiment of the present utility model, and is not used to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model are included in the scope of protection of the present utility model.

Claims

1. A battery stack structure, characterized in that: The battery stack structure comprises: A plurality of stacked battery cells, wherein electrodes are arranged on the back of the battery cells; At least part of the battery stack structure is composed of multiple groups of battery cells; each group of battery cells includes two battery cells in contact with each other at the back; For two adjacent battery cells in the battery stacking structure whose front sides are in contact with each other, a protective adhesive layer is provided on the front side of at least one battery cell.

2. The battery stack structure according to claim 1, characterized in that: The electrodes of one battery cell in each group of battery cells are arranged crosswise with the electrodes of another battery cell.

3. The battery stack structure according to claim 2, characterized in that: The electrodes of one battery cell in each group of battery cells are perpendicular to the electrodes of another battery cell.

4. The battery stack structure according to claim 2, characterized in that: The electrode comprises a main grid and a fine grid; In the case where the protrusion height of the main grid is greater than the protrusion height of the fine grid, the main grid of one battery cell in each group of battery cells is arranged crosswise with the main grid of another battery cell; In the case where the protruding height of the main grid is smaller than the protruding height of the fine grid, the fine grid of one battery cell in each group of battery cells is arranged crosswise with the fine grid of another battery cell.

5. The battery stack structure according to claim 2, characterized in that: The electrode comprises only a thin grid; The fine grids of one battery cell in each group of battery cells are arranged crosswise with the fine grids of another battery cell.

6. The battery stack structure according to claim 1, characterized in that: The protective adhesive layer is a planar adhesive layer that completely covers the front side of the battery cell.

7. The battery stack structure according to claim 1, characterized in that: The protective adhesive layer comprises: A plurality of protective adhesive units arranged at intervals; The protective glue unit includes: any one of glue dots, glue strips, and glue blocks; The protective adhesive layer is a transparent protective adhesive layer.

8. The battery stack structure according to claim 1, characterized in that: For two adjacent battery cells in the battery stacking structure whose front sides are in contact with each other, a protective adhesive layer is provided on the front side of one of the battery cells.

9. The battery stack structure according to claim 1, characterized in that: For two adjacent battery cells in the battery stacking structure whose front sides are in contact with each other, a portion of the protective adhesive layer is disposed on the front side of one of the battery cells, and another portion of the protective adhesive layer is disposed on the front side of the other battery cell.

10. A tool for accommodating a battery stacking structure, characterized in that: include: A tooling body, and a battery stacking structure as claimed in any one of claims 1 to 9 arranged in the tooling body.

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