Battery pack welding tool

Abstract

The utility model relates to the field of battery manufacturing equipment, in particular to a battery pack welding tool. In the prior art, in the welding process of a battery pack, the problems of insufficient positioning precision of a battery cell and a conductive piece, poor welding stability and the like exist. In order to solve the problems, the battery pack welding tool comprises a first pressing plate and a second pressing plate which are oppositely arranged, limiting structures are arranged on the first pressing plate and the second pressing plate, and the limiting structures are used for limiting a battery assembly. The limiting structure comprises a first limiting groove used for limiting the battery cell and a second limiting groove used for limiting the conductive piece, and the first limiting groove and the second limiting groove are matched with the appearance of the battery cell to be welded and the appearance of the conductive piece correspondingly. The welding tool further comprises a positioning structure and a detachable connecting mechanism. The battery pack welding tool can precisely limit the battery pack, improves the welding precision and quality, has good universality and operation convenience, and remarkably improves the welding efficiency of the battery pack.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing equipment, and in particular to a battery pack welding fixture. Background Technology

[0002] With the rapid development of new energy technologies, battery packs are increasingly widely used in various electronic devices and electric vehicles. Welding is a crucial step in the battery pack manufacturing process, and its quality directly affects the performance and lifespan of the battery pack. However, existing battery pack welding technologies have some problems, mainly in the following aspects:

[0003] First, the positioning accuracy of the battery cells and conductive components is insufficient. During the welding process, precise positioning of the cells and conductive components is crucial to ensure welding quality. Current positioning methods struggle to simultaneously meet the positioning requirements of cells and conductive components with different shapes, leading to welding position misalignment and impacting the battery pack's performance and reliability.

[0004] Secondly, the welding process lacks stability. Due to the varying shapes of the battery cells and conductive components, they are prone to movement or deformation during welding, affecting the welding results. Existing tooling designs often struggle to effectively secure battery modules of different specifications, leading to unstable welding quality and increased defect rates.

[0005] Furthermore, the welding operation lacks convenience. Existing welding fixtures are complex in structure and inconvenient to assemble and disassemble, increasing operation time and maintenance costs. At the same time, some fixture designs fail to fully consider the needs of welding operations, such as insufficient protection against welding spatter, which affects work efficiency and safety.

[0006] Finally, existing tooling lacks versatility. Battery packs come in various specifications and models, but existing welding tooling is often only applicable to specific battery components, lacking flexibility and increasing production costs.

[0007] These problems severely restrict the improvement of battery pack production efficiency and product quality. Utility Model Content

[0008] The purpose of this invention is to provide a battery pack welding fixture to solve the technical problems of inaccurate positioning of battery cells and conductive components and unstable welding quality in the existing battery pack welding process.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A battery pack welding fixture includes a first pressure plate and a second pressure plate arranged opposite to each other, and each of the first pressure plate and the second pressure plate is provided with a limiting structure; wherein the limiting structure is used to limit the battery assembly.

[0011] Furthermore, the limiting structure includes a first limiting groove for limiting the battery cell.

[0012] Specifically, the first limiting groove has a shape adapted to the shape of the battery cell to be welded.

[0013] Furthermore, the limiting structure also includes a second limiting groove for limiting the conductive element.

[0014] Specifically, the second limiting groove has a shape adapted to the shape of the conductive part to be welded.

[0015] Furthermore, the first pressure plate and the second pressure plate are provided with through holes.

[0016] Furthermore, it also includes a positioning structure, which is fixed to the second pressure plate.

[0017] Furthermore, it also includes a connecting mechanism that detachably connects the first pressure plate and the positioning structure.

[0018] Specifically, the connecting mechanism includes a latch disposed on the first pressure plate, and the latch is detachably connected to the positioning structure.

[0019] The beneficial effects of this invention are: by setting a limiting structure on the first and second pressure plates, the battery components can be effectively limited, improving the positioning accuracy during the battery pack welding process. The opposing design of the first and second pressure plates makes the tooling structure simple, easy to operate, and suitable for welding battery packs of various specifications.

[0020] Furthermore, the first and second limiting grooves are respectively adapted to the shapes of the battery cell and conductive component to be welded, which can more accurately define the position of the battery cell and conductive component, improving welding accuracy and quality. The through hole facilitates the welding operation. The positioning structure design further enhances the fixing effect of the battery assembly. The detachable connection mechanism design makes the tooling easy to install, disassemble, and maintain, improving work efficiency. The combination of these features enables the battery pack welding tooling of this utility model to significantly improve the efficiency and quality of battery pack welding. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall battery pack welding fixture in one embodiment of the present invention.

[0022] Figure 2 This is an exploded view of the battery pack welding fixture in one embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the limiting groove in one embodiment of the present invention.

[0024] In the figure: 1. First pressure plate, 2. Second pressure plate, 3. Positioning structure, 4. Connecting mechanism, 5. First limiting groove, 6. Second limiting groove, 7. Through hole. Detailed Implementation

[0025] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the described embodiments are only used to explain the technical principles of this utility model, and not to limit its scope of protection. Those skilled in the art should understand that various transformations, modifications, or equivalent substitutions can be made to these embodiments without departing from the spirit and scope of this utility model. All such transformations, modifications, or equivalent substitutions should be considered to fall within the scope of protection defined by the claims of this utility model.

[0026] Reference Figures 1 to 3 This utility model provides a battery pack welding fixture, including a first pressure plate 1 and a second pressure plate 2 arranged opposite to each other. Both the first pressure plate 1 and the second pressure plate 2 are provided with limiting structures, which are used to limit the battery assembly.

[0027] In battery pack manufacturing, precise welding is a crucial step in ensuring battery performance and lifespan. Traditional welding methods typically employ manual positioning or simple tooling, which struggle to simultaneously meet the precise positioning requirements of both the battery cells and conductive components. This invention effectively solves this problem by incorporating a specialized limiting structure on the pressure plate.

[0028] The limiting structure includes a first limiting groove 5 for limiting the battery cell. For example... Figure 3 As shown, the first limiting groove 5 has a shape adapted to the outline of the battery cell to be welded. Preferably, the first limiting groove 5 has an S-shaped orientation to accommodate the curved structure of the battery cell. In the prior art, battery cells have various shapes, including straight and curved types. The S-shaped orientation design of this utility model can better adapt to the battery cell to be welded in this embodiment, improving the applicability of the tooling.

[0029] The limiting structure also includes a second limiting groove 6 for limiting the conductive component. For example... Figure 3 As shown, the second limiting groove 6 has a shape adapted to the outline of the conductive component to be welded. Preferably, the second limiting groove 6 includes a rectangular body with rectangular protrusions on the rectangular body for limiting the integral conductive component.

[0030] The first pressure plate 1 and the second pressure plate 2 are provided with through holes 7. For example... Figure 1 and Figure 2As shown, the through hole 7 penetrates the first pressure plate 1 and the second pressure plate 2, and is used for welding operations and to prevent welding spatter. In traditional welding processes, welding spatter is a common problem that can lead to short circuits or other quality issues. Welding through the welding hole 7 not only facilitates the welding operation but also effectively controls welding spatter, improving welding quality and operational safety.

[0031] like Figure 2 As shown, the welding fixture also includes a positioning structure 3, which is fixed to the second pressure plate 2. The positioning structure 3 is disposed on both sides of the battery assembly to restrict lateral movement of the battery assembly. In the prior art, lateral movement of the battery assembly during the welding process is a significant factor affecting welding quality. The positioning structure design of this invention solves this problem, ensuring the stability of the battery assembly during the welding process.

[0032] like Figure 1 and Figure 2 As shown, the welding fixture also includes a connecting mechanism 4, which detachably connects the first pressure plate 1 and the positioning structure 3. Preferably, the connecting mechanism 4 is a locking structure. This design facilitates the disassembly and maintenance of the fixture. In traditional welding fixtures, disassembly and maintenance are often cumbersome, affecting production efficiency. The detachable design of this utility model improves the ease of use of the fixture.

[0033] Preferably, the depth of the second limiting groove 6 is greater than the depth of the first limiting groove 5. In the prior art, the thickness difference between the battery cell and the conductive component often leads to inaccurate positioning or insecure fixation. This invention solves this problem through a differentiated groove depth design.

[0034] The battery pack welding fixture of this utility model is used as follows: First, the battery cell is placed in the first limiting groove 5, and the conductive component is placed in the second limiting groove 6. Then, the first pressure plate 1 and the positioning structure 3 are fixed together by the connecting mechanism 4, so that the battery cell and the conductive component are firmly limited. Finally, the welding operation is performed through the through hole 7. Compared with the traditional manual positioning and welding, this operation method improves the operation efficiency and welding accuracy.

[0035] The battery pack welding fixture of this utility model has the following beneficial effects:

[0036] By setting limiting structures on the first and second pressure plates, the battery assembly can be precisely positioned, improving the positioning accuracy during the battery pack welding process. The first and second limiting grooves are respectively adapted to the shapes of the battery cell and conductive component to be welded, thus limiting the battery cell and its assembly, further improving welding accuracy and quality. The through-hole facilitates welding operations and effectively prevents welding particle spatter. The positioning structure design enhances the lateral fixation of the battery assembly, preventing movement during welding. The detachable connection mechanism design makes the fixture easy to install, disassemble, and maintain, improving work efficiency. The design of the second limiting groove being deeper than the first limiting groove accommodates the thickness differences of the conductive component and battery cell, allowing the fixture to better adapt to battery assemblies of different specifications. The combination of these features enables the battery pack welding fixture of this invention to significantly improve the efficiency, accuracy, and quality of battery pack welding, while also possessing good versatility and operability.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0038] This utility model has been described in detail through the above specific embodiments. However, it should be understood that the above content is illustrative only and is not intended to limit the scope of this utility model. Those skilled in the art can make various modifications and variations to this utility model according to specific application scenarios and actual needs without departing from the spirit and scope of this utility model, and such modifications and variations are all within the protection scope of this utility model.

Claims

1. A battery pack welding fixture, characterized in that, include: The first and second pressure plates are arranged opposite to each other, and both the first and second pressure plates are provided with limiting structures. The limiting structure is used to limit the battery assembly; The limiting structure includes a first limiting groove for limiting the battery cell; The limiting structure also includes a second limiting groove for limiting the conductive component; The depth of the second limiting groove is greater than the depth of the first limiting groove.

2. The battery pack welding fixture according to claim 1, characterized in that, The first limiting groove has a shape adapted to the shape of the battery cell to be welded.

3. The battery pack welding fixture according to claim 1, characterized in that, The second limiting groove has a shape that matches the shape of the conductive part to be welded.

4. The battery pack welding fixture according to claim 1, characterized in that, The first pressure plate and the second pressure plate are provided with through holes.

5. The battery pack welding fixture according to claim 1, characterized in that, It also includes a positioning structure, which is fixed to the second pressure plate.

6. The battery pack welding fixture according to claim 5, characterized in that, It also includes a connecting mechanism that detachably connects the first pressure plate and the positioning structure.

7. The battery pack welding fixture according to claim 6, characterized in that, The connecting mechanism includes a latch disposed on the first pressure plate, and the latch is detachably connected to the positioning structure.

8. The battery pack welding fixture according to claim 5, characterized in that, The positioning structure is located at both ends of the second pressure plate along its length.

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