Nickel sheet cantilever structure assembly and battery

Abstract

The utility model discloses a nickel sheet cantilever structure assembly and a battery. The nickel sheet cantilever structure assembly comprises a nickel sheet, a busbar and a flexible circuit board, the nickel sheet comprises a nickel sheet main body, the whole nickel sheet main body is positioned on a plane and is provided with an S-shaped bent cantilever, one end of the nickel sheet main body is welded on the busbar, and the other end of the nickel sheet main body is welded on the flexible circuit board. The nickel sheet cantilever structure assembly can be applied to energy storage batteries and power batteries. Through the special design of the nickel sheet structure, the strength of the nickel sheet is weakened by the cantilever structure of the nickel sheet, so that the nickel sheet is easier to deform under external force so as to adapt to the welding spot displacement caused by the expansion of the battery cell, and the mechanical strength of the position is enhanced by the dispensing at the FPC bonding pad, so that the bonding pad does not fall off in the deformation process of the nickel sheet. According to the utility model, the difficulty that the FPC cannot adapt to the welding spot displacement caused by cell expansion when the FPC space is insufficient or a cantilever cannot be arranged is effectively solved, and the investment cost of equipment development is reduced.

Description

Technical Field

[0001] The utility model relates to a nickel sheet cantilever structure, in particular to a nickel sheet cantilever structure component applied to energy storage batteries and power batteries. Background Art

[0002] In the field of energy storage batteries or power batteries, the expansion problem of the battery cell will cause the aluminum bar and the FPC (flexible circuit board) nickel sheet to shift at the welding point. If the FPC nickel sheet is subjected to tension, it may cause the FPC to break. At present, in order to solve this difficulty, a cantilever structure or a bending design is usually used to absorb the displacement. However, the existing structural design will cause the FPC to bulge after bending, so the space required is large, which is not conducive to wiring and other structures cannot appear around the cantilever. Utility Model Content

[0003] In order to solve the deficiencies existing in the above-mentioned technologies, the utility model provides a nickel sheet cantilever structure component and a battery.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a nickel sheet cantilever structure component, which includes a nickel sheet, a bus bar and a flexible circuit board;

[0005] The nickel sheet comprises a nickel sheet body, the whole nickel sheet body is on a plane, one end of the nickel sheet body is welded on the bus bar, and the other end of the nickel sheet body is welded on the flexible circuit board.

[0006] Preferably, the nickel sheet body has an S-shaped cantilever.

[0007] Preferably, a welding pad is fixedly provided on the flexible circuit board, and the nickel sheet body is welded and connected to the flexible circuit board via the welding pad.

[0008] Preferably, adhesive is applied on the welding pad.

[0009] Preferably, a punch hole is formed at one end of the nickel sheet body to be welded to the flexible circuit board.

[0010] An energy storage battery comprises a nickel sheet cantilever structure component.

[0011] A power battery comprises a nickel sheet cantilever structure component.

[0012] The utility model discloses a nickel sheet cantilever structure component, which uses a new nickel sheet structure to connect the bus and the flexible circuit board. Through the special design of the nickel sheet structure, the nickel sheet has a special-shaped cantilever structure, which solves the problem of arching after the FPC is bent, and weakens the strength of the nickel sheet, making the nickel sheet easier to deform when subjected to external force, so as to adapt to the displacement of the solder joint caused by the expansion of the battery core. Furthermore, the glue treatment at the FPC welding plate enhances the mechanical strength of the area, so that the welding plate will not fall off during the deformation of the nickel sheet, and ensures the nickel sheet's role in conducting electrical signals and supporting, which can effectively reduce the production cost, while improving the production capacity, reducing the difficulty of mass production of the FPC solution, and has wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 for Figure 1 Schematic diagram of the setup of the cantilever structure of the nickel sheet.

[0015] In the figure: 1. Nickel sheet main lift; 2. Bus bar; 3. Flexible circuit board; 4. Cantilever; 5. Welding pad; 6. Punching hole. DETAILED DESCRIPTION

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] The utility model discloses a novel nickel sheet cantilever structure component. The entire structure component is arranged as follows Figure 1 As shown, it includes a nickel sheet, a bus bar 2 and a flexible circuit board 3;

[0018] The nickel sheet includes a nickel sheet body 1 , which is fixed to the bus 2 by laser welding at one end and fixed to the flexible circuit board 3 by glue after soldering at the other end.

[0019] First, considering the displacement of solder joints caused by the expansion of the battery cell, the new nickel sheet structure is designed with an S-shaped cantilever 4. The cantilever 4 structure is presented in a planar manner. After the nickel sheet is connected to the bus and the FPC, the entire nickel sheet body 1 is still on a plane, thereby solving the problem of arching after the traditional FPC is bent, realizing automated mass production, and effectively solving the embarrassing situation of insufficient FPC space or inability to arrange the cantilever. At the same time, the S-shaped cantilever structure with a special design weakens the strength of the nickel sheet body 1, making the nickel sheet more easily deformed when subjected to external force, so as to adapt to the displacement of solder joints caused by the expansion of the battery cell.

[0020] Secondly, in order to prevent the welding pad from falling off during the deformation of the nickel sheet, the nickel sheet body 1 and the flexible circuit board 3 are welded and connected through the welding pad 5. After the nickel sheet is soldered to the FPC through the welding pad, adhesive is applied to the welding pad 5 for glue fixation. The glue at the FPC welding pad enhances the mechanical strength of the area, so that the welding pad will not fall off during the deformation of the nickel sheet, thereby enhancing the reliability of the nickel sheet cantilever structure assembly.

[0021] In addition, a punch hole 6 is formed at one end of the nickel sheet body 1 for welding the flexible circuit board 3 to prevent a short circuit during spot welding.

[0022] The nickel sheet cantilever structure assembly disclosed in the utility model can be applied to energy storage batteries and power batteries. Compared with the prior art, it has the following technical advantages:

[0023] 1) The nickel sheet cantilever structure is specially designed to be more easily deformed when subjected to external force, so as to adapt to the problem of solder joint displacement caused by the expansion of the battery cell;

[0024] 2) After the setting, the main body of the nickel sheet is still on a plane, which effectively solves the problem of the arch point after the traditional FPC nickel sheet is bent, solves the embarrassing situation that the FPC space is insufficient or the cantilever cannot be arranged, realizes automated mass production, reduces the use of FPC materials, and effectively reduces the use cost;

[0025] 3) The S-shaped nickel sheet cantilever structure does not require the purchase of new equipment for its bending processing, thus reducing equipment investment costs;

[0026] 4) The glue treatment at the FPC welding pad enhances the mechanical strength of the area, prevents the welding pad from falling off, and improves the reliability of the entire nickel sheet structural assembly.

[0027] The above implementation modes are not limitations of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by technicians in this technical field within the technical solution of the present invention also belong to the protection scope of the present invention.

Claims

1. A nickel sheet cantilever structure assembly, characterized in that: It includes a nickel sheet, a bus bar (2) and a flexible circuit board (3); The nickel sheet comprises a nickel sheet body (1), the entire nickel sheet body (1) is located on a plane, and one end of the nickel sheet body (1) is welded to the bus bar (2), and the other end is welded to the flexible circuit board (3).

2. The nickel sheet cantilever structure assembly according to claim 1, characterized in that: The nickel sheet body (1) has an S-shaped bent cantilever (4).

3. The nickel sheet cantilever structure assembly according to claim 2, characterized in that: A welding plate (5) is fixedly arranged on the flexible circuit board (3), and the nickel sheet body (1) is welded and connected to the flexible circuit board (3) via the welding plate (5).

4. The nickel sheet cantilever structure assembly according to claim 3, characterized in that: Adhesive is applied on the welding pad (5).

5. The nickel sheet cantilever structure assembly according to claim 4, characterized in that: A punch hole (6) is provided at one end of the nickel sheet body (1) for welding the flexible circuit board (3).

6. An energy storage battery, characterized in that: The invention comprises the nickel sheet cantilever structure component as described in any one of claims 1 to 5.

7. A power battery, characterized in that: The invention comprises the nickel sheet cantilever structure component as described in any one of claims 1 to 5.

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