Battery cell vertical plate penetrating auxiliary tool

Abstract

The utility model provides a vertical plate penetrating auxiliary tool for a battery cell. The tool comprises a frame and a tab comb assembly. The frame comprises a bottom plate and a side plate clamped on the bottom plate in a sliding manner, the battery cell is positioned in a space spliced by the bottom plate and the side plate, and a positioning hole is longitudinally formed in the top of the side plate; the tab comb assembly comprises a fixed frame, a movable comb plate and a positioning pin; the fixed frame is arranged at the tops of the side plates, the positioning pins are installed at the four corners of the fixed frame and matched with positioning holes in the tops of the side plates, the two movable comb plates are correspondingly and horizontally arranged on the two symmetrical sides of the fixed frame in a sliding mode, and the two symmetrical ends of each movable comb plate are the comb tooth end and the handle end respectively. And the comb tooth ends of the movable comb plates which horizontally slide inwards are positioned in gaps between adjacent battery cell tabs. The whole structure of the tool is convenient to disassemble and maintain through the frame formed by splicing, the battery cell modules are arranged in the frame for stacking and plate penetrating, and the carrying and overturning actions in the battery cell module assembling process are reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery cell processing, and in particular to an auxiliary tooling for vertical battery cell insertion. Background Technology

[0002] In the integration process of power battery modules, the precise alignment and reliable connection of cell modules are key technical aspects that determine the performance of the battery system. Currently, the following problems exist: First, during the stacking and assembly of cell modules, due to the cumulative effect of dimensional tolerances of individual cells and the instability of the assembly reference surface, operators need to repeatedly adjust the spatial orientation of the modules (including translation, rotation, and flipping) to achieve axial alignment of multiple modules. This assembly method, which relies on manual intervention, not only significantly reduces production line cycle time but may also lead to irreversible mechanical stress damage to the cell separator due to frequent displacement.

[0003] Secondly, in the bonding process between the module and the PCBA control board, the cell tabs (thickness tolerance ±0.1mm) need to pass through the corresponding tab slot array on the PCBA board with sub-millimeter positioning accuracy (≤0.3mm required). However, during the bonding process, micro-displacement caused by the flow of the adhesive can lead to back-side interference between some tabs and the PCB backplane. This interference defect not only causes a rework rate as high as 12-15%, but more seriously, undetected latent interference points may cause micro-short circuit risks under vibration conditions, directly affecting the safety and reliability of the battery system. Utility Model Content

[0004] Therefore, it is necessary to provide a vertical battery cell insertion auxiliary tooling to address the problems of time-consuming calibration and back-side interference when connecting to the PCB backplane in the existing manual assembly of battery cell modules.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a vertical battery cell insertion auxiliary tooling, including a frame and an electrode comb assembly.

[0006] The frame includes a base plate and a side plate that slides and engages with the base plate. The battery cell is located in the space formed by the base plate and the side plate. A positioning hole is longitudinally opened on the top of the side plate.

[0007] The electrode comb assembly includes a fixed frame, movable comb plates, and positioning pins. The fixed frame is placed on the top of the side plate, and the positioning pins are installed at the four corners of the fixed frame and are adapted to the positioning holes on the top of the side plate. The two movable comb plates are symmetrically arranged on the two sides of the fixed frame, with the comb teeth end and the handle end being the symmetrical ends of the movable comb plates, respectively. The comb teeth end of the movable comb plates that slide inward horizontally is located in the gap between adjacent battery cell electrodes.

[0008] Furthermore, the side plate includes a first side plate, a second side plate, a third side plate, and a fourth side plate; the side edges of the second side plate and the third side plate have protrusions, and the surfaces of the first side plate and the fourth side plate have openings that match the protrusions; the bottom of the first side plate engages with the bottom plate, the bottoms of the second side plate and the third side plate slide on the bottom plate toward the first side plate and engage perpendicularly with it, and the fourth side plate engages with the edges of the second side plate and the third side plate away from the first side plate.

[0009] Furthermore, the fourth side panel is fixed to the second and third side panels by means of snap fasteners.

[0010] Furthermore, the top of the base plate is recessed towards the bottom corner of the battery cell to create a structural void.

[0011] Furthermore, protective sponges are provided at the top of the bottom plate where the battery cells are stacked, as well as on the sides of the third and fourth side plates that are in contact with the battery cells.

[0012] Furthermore, an elastic ball is embedded inside the fixed frame near the movable comb plate, and a ball positioning hole adapted to the elastic ball is opened on the outer side of the comb tooth end of the movable comb plate.

[0013] Furthermore, the bottom of the comb teeth of the movable comb plate is beveled, so that the bottom of the adjacent comb teeth forms a flared opening to guide the battery cell tabs.

[0014] Furthermore, the handle end of the movable comb plate protrudes longitudinally to form a stepped groove that is positioned and fitted to the top of the second and third side plates.

[0015] Furthermore, a PCBA board is placed inside the fixed frame, and the gap between the tabs of the PCBA board is greater than the gap between the top teeth of the movable comb plate.

[0016] Furthermore, the battery cell tabs that pass through the tab grooves on the PCBA board are exposed by 2-3mm.

[0017] Compared with the prior art, the beneficial effects of this utility model include:

[0018] 1. The frame, constructed by splicing, makes the overall structure of the tooling easy to disassemble and maintain. The battery cell modules are placed inside the frame for stacking and threading, reducing the handling and flipping actions during the assembly of the battery cell modules.

[0019] 2. The bottom of the comb teeth of the movable comb plate adopts a flared structure, which facilitates the alignment and insertion of the electrode tabs, and has a certain guiding and shaping function, increasing the tolerance for electrode tab deformation. Attached Figure Description

[0020] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0021] Figure 1 This is a perspective view of a vertical battery cell insertion auxiliary tooling introduced in this utility model;

[0022] Figure 2 For based on Figure 1 A three-dimensional view of the framework;

[0023] Figure 3 For based on Figure 2 A schematic diagram of the base plate;

[0024] Figure 4 For based on Figure 1 A schematic diagram of the structure of the ear comb assembly;

[0025] Figure 5 For based on Figure 4 A structural diagram of the fixed frame.

[0026] The following are the labels in the diagram: 1. Frame; 11. Base plate; 12. First side plate; 13. Second side plate; 14. Third side plate; 15. Fourth side plate; 16. Buckle; 2. Alternating ear comb assembly; 21. Fixed frame; 22. Movable comb plate; 23. Positioning pin; 24. Elastic ball catch; 3. PCBA board. Detailed Implementation

[0027] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0028] According to one embodiment of the present invention, in conjunction with Figure 1 The diagram shows a vertical battery cell insertion auxiliary tool, which mainly consists of a frame 1 and an electrode comb assembly 2.

[0029] like Figure 2 and Figure 3 As shown, the frame 1 includes a base plate 11, a first side plate 12, a second side plate 13, a third side plate 14, and a fourth side plate 15, all made of insulating material. The top of the base plate 11 has a slot for connecting to the bottom of the first side plate 12, and a sliding groove for sliding the second side plate 13 and the third side plate 14. The two sliding grooves are located on the outer periphery of the two ends of the slot, and the length direction of the sliding groove is perpendicular to the length direction of the slot.

[0030] The bottom of the first side plate 12 extends downward with an extension portion that matches the slot. The bottoms of the second side plate 13 and the third side plate 14 have extension portions that fit into the sliding groove. The side edges of the second side plate 13 and the third side plate 14 have protrusions, and the surfaces of the first side plate 12 and the fourth side plate 15 have openings that match the protrusions. Therefore, during assembly, the first side plate 12 is first engaged with the base plate 11. Then, the extension portions at the bottom of the second side plate 13 and the third side plate 14 are located in the sliding groove and slide towards the first side plate 12 until the protrusions of the second side plate 13 and the third side plate 14 engage with the openings of the first side plate 12. Then, the openings of the fourth side plate 15 are engaged with the protrusions of the second side plate 13 and the third side plate 14, and the parts are connected and fixed by the buckle 16, thus completing the assembly of the frame 1.

[0031] The cells are positioned by right-angle positioning using the first side plate 12 and the second side plate 13. Protective sponges are provided on the top of the base plate 11 and the sides of the third side plate 14 and the fourth side plate 15 that are in contact with the cells, providing a certain degree of elasticity during assembly. This prevents the cells from being damaged by hard compression when installing the third side plate 14 and the fourth side plate 15 after all cells have been stacked. At the same time, the top of the base plate 11 is recessed downwards near the bottom corner of the cells to create a structural void and prevent the bottom corner from deforming under stress.

[0032] like Figure 4 and Figure 5 As shown, the electrode comb assembly 2 includes a fixed frame 21, a movable comb plate 22, a positioning pin 23, and an elastic ball bearing 24. The frame shape of the fixed frame 21 is adapted to the rectangle formed by the four side plates. Positioning holes are opened on the top of the first side plate 12 and the fourth side plate 15. The positioning pin 23 is provided on the fixed frame 21 and is placed in the positioning hole to position the fixed frame 21. The fixed frame 21 has holes on its side facing the second side plate 13 and the third side plate 14. The movable comb plate 22 is slidably placed in the holes. One end of the movable comb plate 22 located outside the fixed frame 21 is a handle end, which protrudes longitudinally to form a stepped groove that is positioned and fitted against the top of the second side plate 13 and the third side plate 14. The other end is a comb tooth end, and the bottom of the comb teeth at the comb tooth end is beveled, so that the bottom of the adjacent comb teeth forms a flared mouth for guiding the battery cell electrode tab.

[0033] Since the PCBA board 3 is placed inside the fixed frame 21, to avoid interference between the battery cell tabs and the back of the PCBA board 3, the gap between the tabs in the PCBA board 3 is larger than the top spacing of the comb teeth of the movable comb plate 22, ensuring that all battery cell tabs are embedded in the comb teeth and the flared end is properly positioned. To prevent the comb teeth from touching the battery cell tabs, the movable comb plate 22 is in the open state before installing the tab comb assembly 2. An elastic ball 24 is embedded inside the fixed frame 21 near the movable comb plate 22. The outer side of the comb teeth of the movable comb plate 22 has a ball positioning hole that matches the elastic ball 24. When the ball positioning hole of the movable comb plate 22 moves to the position of the elastic ball 24, the elastic ball 24 is placed in the ball positioning hole, achieving the purpose of positioning the movable comb plate 22.

[0034] In practical applications, after assembling the first side plate 12, the second side plate 13, and the bottom plate 11, the battery cells are positioned by right-angle positioning of the first side plate 12 and the second side plate 13. When installing the third side plate 14 and the fourth side plate 15 after all the battery cells are stacked, the protective sponge prevents the battery cells from being damaged by hard compression. The fourth side plate 15 is fixed to the second side plate 13 and the third side plate 14 by four buckles 16. The tab comb assembly 2 is assembled and positioned with the side plates by four positioning pins 23. Before installation, the tab comb assembly 2 needs to open the movable comb plates 22 on both sides to prevent the comb teeth from touching the battery cell tabs. The tab comb assembly 2 is positioned by a ball-bearing device. After the tab comb assembly 2 is positioned on the top of the side plate, the movable comb plates 22 on both sides are pushed inward so that the tabs are located in the gap between the comb teeth. Place the PCBA board 3 inside the fixed frame 21, confirm that all tabs are correctly inserted and exposed 2-3mm, open the movable comb plates 22 on both sides, let the PCBA board 3 fall and touch the tab adhesive, which facilitates the subsequent tab bending. After the cells are stacked, take out the module in the order of removing the tab comb assembly 2, the fourth side plate 15, the third side plate 14, and the second side plate 13.

[0035] In this embodiment, the frame 1, which is assembled by splicing, makes the overall structure of the tooling easy to disassemble and maintain. The battery cell module is placed inside the frame 1 for stacking and boarding, reducing the handling and flipping actions during the battery cell module assembly process. The bottom of the comb teeth of the movable comb plate 22 adopts a flared structure, which facilitates the alignment and boarding of the electrode tabs, and has a certain guiding and shaping function, increasing the tolerance of electrode tab deformation.

[0036] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. An electric core vertical plate-penetrating auxiliary tool, characterized in that, It includes: The frame (1) includes a base plate (11) and a side plate that is slidably engaged on the base plate (11). The battery cell is located in the space formed by the base plate (11) and the side plate. A positioning hole is longitudinally opened on the top of the side plate. The electrode comb assembly (2) includes a fixed frame (21), movable comb plates (22) and positioning pins (23); the fixed frame (21) is placed on the top of the side plate, the positioning pins (23) are installed at the four corners of the fixed frame (21) and are adapted to the positioning holes on the top of the side plate, the two movable comb plates (22) are correspondingly slidably arranged on the two symmetrical sides of the fixed frame (21), the two symmetrical ends of the movable comb plates (22) are the comb teeth end and the handle end respectively, and the comb teeth end of the movable comb plates (22) that slide inward horizontally is located in the gap between adjacent battery cell electrodes.

2. The electric cell vertical plate-penetrating auxiliary tooling according to claim 1, characterized in that, The side plate includes a first side plate (12), a second side plate (13), a third side plate (14), and a fourth side plate (15); the side edges of the second side plate (13) and the third side plate (14) have protrusions, and the surfaces of the first side plate (12) and the fourth side plate (15) have openings that match the protrusions; the bottom of the first side plate (12) engages with the bottom plate (11), the bottoms of the second side plate (13) and the third side plate (14) slide on the bottom plate (11) toward the first side plate (12) and engage with it perpendicularly, and the fourth side plate (15) engages with the edges of the second side plate (13) and the third side plate (14) away from the first side plate (12).

3. The cell vertical plate penetrating auxiliary tooling of claim 2, wherein, The fourth side plate (15) is connected and fixed to the second side plate (13) and the third side plate (14) by a buckle (16).

4. The cell vertical plate penetrating auxiliary tooling of claim 1, wherein, The top of the base plate (11) is recessed towards the bottom corner of the battery cell to form a structural void.

5. The auxiliary tooling for vertical cell insertion according to claim 2, characterized in that, Protective sponges are provided on the top of the bottom plate (11) where the cells are stacked, and on the sides of the third side plate (14) and the fourth side plate (15) that are in contact with the cells.

6. The auxiliary tooling for vertical cell insertion according to claim 1, characterized in that, An elastic ball (24) is embedded inside the fixed frame (21) near the movable comb plate (22), and a ball positioning hole that matches the elastic ball (24) is opened on the outer side of the comb tooth end of the movable comb plate (22).

7. The cell vertical plate penetrating assisting tool according to claim 1, wherein The bottom of the comb teeth of the movable comb plate (22) is beveled, so that the bottom of the adjacent comb teeth forms a flared mouth for guiding the battery cell tab.

8. The cell vertical plate penetrating assisting tool according to claim 2, wherein The handle end of the movable comb plate (22) protrudes longitudinally to form a stepped groove that is positioned and fitted to the top of the second side plate (13) and the third side plate (14).

9. The cell vertical plate penetrating assisting tool according to claim 1, wherein The fixed frame (21) contains a PCBA board (3), and the gap between the tabs of the PCBA board (3) is greater than the gap between the tops of the comb teeth of the movable comb plate (22).

10. The cell vertical plate penetrating assisting tool according to claim 9, wherein The battery cell tabs that pass through the tab slot of the PCBA board (3) are exposed 2-3mm.

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