Battery cell formation clamp and battery cell formation cabinet
By designing the clamping and heating components of the cell formation fixture, the problems of poor clamping and difficulty in feeding during the cell formation process were solved, thereby improving the quality and efficiency of cell formation.
Patent Information
- Application Number
- CN202422586408.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-10-24
AI Technical Summary
The existing battery cell formation fixtures have poor contact between the clamping components and the battery cell tabs, resulting in unqualified formation and making material loading difficult, which affects the formation quality and efficiency.
A battery cell formation fixture was designed, including a formation component, a heating component, and a clamping component. The clamping component is set in the mounting hole to reduce the clamping position height, reduce the tab bending angle, facilitate battery cell loading, and provide the required temperature for formation through the heating component.
This improves the quality and efficiency of cell formation, avoids poor contact problems caused by bent tabs, and ensures a smooth formation process.
Smart Images
Figure CN223539666U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery cell production equipment technology, and in particular to a battery cell formation fixture and a battery cell formation cabinet. Background Technology
[0002] In the battery cell production process, cell formation is a crucial step, designed to improve cell performance through charging, discharging, and hot-pressing operations, and to prevent problems such as expansion and bulging during use. During cell formation, the cell is typically placed on a formation fixture in a formation cabinet. The formation clamps of the fixture hold the positive and negative tabs of the cell to perform charging, discharging, and hot-pressing processes.
[0003] Existing forming clamps are usually set on the surface of the forming fixture. There is a large height difference between the clamping jaws of the forming clamp and the surface of the forming fixture. Therefore, when the cell is placed on the surface of the forming fixture, in order to ensure that the forming clamp can hold the cell tab smoothly, the angle of the tabs needs to be adjusted, which increases the difficulty and time of mounting. Moreover, if the angle of the tabs is too large, it will easily lead to poor contact between the tabs and the forming clamp, resulting in the cell forming being unqualified. Utility Model Content
[0004] The technical problem to be solved by this utility model embodiment is to provide a cell formation fixture and a cell formation cabinet to solve the problems of difficulty in cell placement and impact on formation quality in the prior art.
[0005] The battery cell formation fixture provided in this embodiment includes: a formation assembly, which includes a housing for placing the battery cell and a clamping plate with a mounting portion, the clamping plate being disposed inside the housing and the mounting portion being exposed outside the housing, the mounting portion being recessed with a mounting hole; a heating assembly, which is disposed inside the housing and is used to heat the battery cell; and a clamping assembly, which is disposed inside the mounting hole and is used to clamp the tabs of the battery cell.
[0006] Optionally, the clamping assembly includes two forming clips, both of which are disposed within the mounting hole. One of the two forming clips is used to clamp the negative tab of the battery cell, and the other is used to clamp the positive tab of the battery cell.
[0007] Optionally, the formation clamp includes an upper clamp and a lower clamp, the upper clamp and the lower clamp are movably connected to clamp the tabs of the battery cell, the lower clamp is at least partially accommodated in the mounting hole, and the upper clamp is located outside the mounting hole.
[0008] Optionally, the clamping assembly further includes a linkage rod, and the upper clamping plates of the two chemical forming clamps are provided with connecting holes. The linkage rod passes through the connecting holes to connect the upper clamping plates of the two chemical forming clamps.
[0009] Optionally, the upper clamping plate has an upper guide plate on the side facing the lower clamping plate, and the lower clamping plate has a lower guide plate on the side facing the upper clamping plate. The electrode of the battery cell is clamped between the upper guide plate and the lower guide plate and is electrically connected to the upper guide plate and the lower guide plate.
[0010] Optionally, the heating assembly includes a heating element and a heating plate. The housing includes a first end face and a second end face disposed opposite to each other. The first end face is used to place the battery cell. The clamping plate is disposed inside the housing on the side near the first end face. The heating plate is disposed inside the housing on the side near the second end face. The heating element is clamped between the heating plate and the clamping plate.
[0011] Optionally, the heating element is a silicone heating element.
[0012] Optionally, the heating plate is provided with multiple hollow cavities at intervals.
[0013] Optionally, the mounting part is provided with a mounting plate, which is located on the side of the mounting hole away from the first end face. The mounting plate is provided with a snap hole, and the bottom of the forming clamp is provided with a buckle. The buckle is engaged with the snap hole to fix the forming clamp.
[0014] This utility model also discloses a cell formation cabinet, including the cell formation fixture as described above.
[0015] Compared with the prior art, the beneficial effects of the battery cell formation fixture and battery cell formation cabinet provided by this utility model are as follows: The battery cell formation fixture of this utility model includes a formation component, a heating component, and a clamping component. The formation component includes a housing for placing the battery cell and a clamping plate with a mounting portion. The clamping plate is disposed inside the housing, and the mounting portion is exposed outside the housing. The mounting portion has a recessed mounting hole, and the clamping component is installed in the mounting hole. This allows the clamping component to sink relative to the housing, thereby reducing the height of the clamping position. This reduces the bending angle of the battery cell's tabs when the battery cell is loaded onto the housing, facilitating rapid loading of the battery cell onto the battery cell formation fixture. It also avoids the problem of poor contact between the tabs and the clamping component due to excessive tab bending, which affects battery cell formation, thus improving the quality and efficiency of battery cell formation. Furthermore, the heating component disposed inside the housing can be used to heat the battery cell, providing the temperature required for battery cell formation. Attached Figure Description
[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. In the accompanying drawings:
[0017] Figure 1 This is a three-dimensional schematic diagram of the cell formation fixture provided in this embodiment of the utility model.
[0018] Figure 2 This is a three-dimensional schematic diagram of another view of the battery cell formation fixture provided in this embodiment of the utility model;
[0019] Figure 3 This is a three-dimensional schematic diagram of an embodiment of the battery cell formation fixture provided in this utility model;
[0020] Figure 4 yes Figure 3 Enlarged view of section A in the middle;
[0021] Figure 5 This is an exploded view of the battery cell formation fixture provided in this embodiment of the utility model;
[0022] Figure 6 This is another exploded view of the battery cell formation fixture provided in this embodiment of the utility model;
[0023] Figure 7 This is a three-dimensional schematic diagram of the chemical forming clip provided in this embodiment of the utility model.
[0024] The labels for the attached figures are as follows:
[0025] 100. Cell formation fixture;
[0026] 1. Formation assembly; 11. Fixture plate; 111. Mounting part; 1111. Mounting hole; 112. Mounting support plate; 1121. Buckle hole; 12. Housing; 121. First end face; 122. Second end face; 2. Heating assembly; 21. Heating plate; 211. Hollow cavity; 3. Clamping assembly; 31. Formation clamp; 311. Upper clamping piece; 3111. Connecting hole; 3112. Upper guide piece; 312. Lower clamping piece; 3121. Lower guide piece; 3122. Buckle; 32. Linkage rod. Detailed Implementation
[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0028] This utility model embodiment provides a cell formation fixture 100, such as Figures 1 to 6 As shown, the battery cell formation fixture 100 includes a formation component 1, a heating component 2, and a clamping component 3. The formation component 1 includes a housing 12 for placing the battery cell and a clamping plate 11 with a mounting portion 111. The clamping plate 11 is disposed inside the housing 12, and the mounting portion 111 is exposed outside the housing 12. The mounting portion 111 has a recessed mounting hole 1111. The heating component 2 is disposed inside the housing 12 and is used to heat the battery cell. The clamping component 3 is disposed within the mounting hole 1111 and is used to clamp the tabs of the battery cell.
[0029] Specifically, by implementing this embodiment, the mounting portion 111 of the clamping plate 11 is recessed with a mounting hole 1111, and the clamping component 3 is disposed within the mounting hole 1111. Therefore, the clamping component 3 can sink relative to the housing 12, thereby reducing the height of the clamping position of the clamping component 3. This reduces the bending angle of the battery cell's tabs when the battery cell is loaded onto the housing 12, lowering the difficulty of adjusting the tab tilt angle and facilitating the rapid loading of the battery cell onto the battery cell formation fixture 100. Furthermore, reducing the height of the clamping position of the clamping component 3 also avoids the problem of poor contact between the tabs and the clamping component 3 due to excessive tab bending, which affects battery cell formation and helps improve the quality of battery cell formation.
[0030] In addition, the heating component 2 installed inside the housing 12 can be used to heat the battery cell, providing the temperature required for battery cell formation and ensuring smooth battery cell formation. Both the clamping plate 11 and the heating component 2 are located inside the housing 12. The housing 12 can fix the clamping plate 11 and the heating component 2, and also protect the clamping plate 11 and the heating component 2, ensuring the stability of the battery cell formation fixture 100 structure.
[0031] It is worth mentioning that multiple mounting parts 111 and clamping components 3 can be provided. For example, such as Figures 1 to 6 As shown, mounting portions 111 can be provided at the four corners of the clamping plate 11, and each of the four mounting portions 111 has a recessed mounting hole 1111. Thus, four clamping components 3 can be installed on one cell forming clamping fixture 100, so that the cell forming clamping fixture 100 can perform forming operations on four cells at the same time, thereby improving the cell forming efficiency.
[0032] Furthermore, as one specific implementation method in some embodiments of this utility model, such as Figures 1 to 5 As shown, the clamping assembly 3 includes two forming clips 31, both of which are disposed in the mounting hole 1111. One of the two forming clips 31 is used to clamp the negative electrode tab of the battery cell, and the other is used to clamp the positive electrode tab of the battery cell.
[0033] Specifically, one of the two formation clips 31 is a negative tab formation clip, used to hold the negative tab of the battery cell, and the other is a positive tab formation clip, used to hold the positive tab of the battery cell. The positive and negative tab formation clips are arranged adjacent to each other within the mounting hole 1111, with the positive tab formation clip having a clamping width greater than or equal to 39 mm and the negative tab formation clip having a clamping width greater than or equal to 29 mm, to ensure sufficient clamping space. Thus, by adjusting the position of the battery cell relative to the positive and negative tab formation clips, the clamping assembly 3 can accommodate battery cells with different positive and negative tab spacings (i.e., battery cells of different specifications).
[0034] As one specific implementation method in some embodiments of this utility model, such as Figure 4 and Figure 7 As shown, the forming clip 31 includes an upper clip 311 and a lower clip 312. The upper clip 311 and the lower clip 312 are movably connected to hold the tabs of the battery cell. The lower clip 312 is at least partially accommodated in the mounting hole 1111, and the upper clip 311 is located outside the mounting hole 1111.
[0035] Specifically, the lower clamping piece 312 is at least partially housed within the mounting hole 1111, and the upper clamping piece 311 is located outside the mounting hole 1111. Thus, while reducing the height of the clamping position formed by the lower clamping piece 312 and the upper clamping piece 311, it can also ensure that the clamping position formed by the lower clamping piece 312 and the upper clamping piece 311 is located outside the mounting hole 1111, avoiding the clamping position being restricted by the mounting hole 1111, so that the forming clamp 31 can smoothly clamp the tabs of the battery cell.
[0036] As one specific implementation method in some embodiments of this utility model, such as Figure 5 and Figure 7 As shown, the clamping assembly 3 also includes a linkage rod 32. The upper clamping plates 311 of the two forming clamps 31 are provided with connecting holes 3111. The linkage rod 32 passes through the connecting holes 3111 to connect the upper clamping plates 311 of the two forming clamps 31.
[0037] Specifically, the linkage 32 connects the upper clamping plates 311 of the two forming clamps 31, enabling the upper clamping plates 311 of the two forming clamps 31 to move together. Thus, by driving only one upper clamping plate 311, the positive and negative tabs of the battery cell can be clamped by the two forming clamps 31 simultaneously, effectively improving the efficiency and convenience of the clamping operation.
[0038] Furthermore, as one specific implementation method in some embodiments of this utility model, such as Figure 4 and Figure 7 As shown, the upper clamping plate 311 has an upper guide plate 3112 on the side facing the lower clamping plate 312, and the lower clamping plate 312 has a lower guide plate 3121 on the side facing the upper clamping plate 311. The electrode tab of the battery cell is clamped between the upper guide plate 3112 and the lower guide plate 3121 and is electrically connected to the upper guide plate 3112 and the lower guide plate 3121.
[0039] Specifically, the clamping force between the upper clamping piece 311 and the lower clamping piece 312 can stably fix the electrode of the battery cell between the upper guide piece 3112 and the lower guide piece 3121, so as to ensure that the upper guide piece 3112 and the lower guide piece 3121 can form a stable electrical connection with the electrode of the battery cell, so that the upper guide piece 3112 and the lower guide piece 3121 can provide the required formation current to the battery cell, ensuring that the battery cell formation proceeds smoothly.
[0040] Furthermore, as one specific implementation method in some embodiments of this utility model, such as Figures 1 to 6 As shown, the heating assembly 2 includes a heating element and a heating plate 21. The housing 12 includes a first end face 121 and a second end face 122 disposed opposite to each other. The first end face 121 is used to place the battery cell. The clamping plate 11 is disposed inside the housing 12 on the side near the first end face 121. The heating plate 21 is disposed inside the housing 12 on the side near the second end face 122. The heating element is clamped between the heating plate 21 and the clamping plate 11.
[0041] Specifically, the heating element is sandwiched between the heating plate 21 and the clamping plate 11, which can fix and protect the heating element. During the cell formation process, driving the heating element can heat the cell at the first end face 121, providing the temperature required for cell formation.
[0042] In one specific embodiment of this utility model, the heating element is a silicone heating element. Compared to the existing heating element which is a heating tube, the silicone heating element can provide more uniform heat to the battery cell on the first end face 121, ensuring the consistency of the battery cell formation temperature and effectively improving the quality of battery cell formation.
[0043] As one specific implementation method in some embodiments of this utility model, such as Figure 2 and Figure 6 As shown, the heating plate 21 has multiple hollow cavities 211 spaced apart inside.
[0044] Specifically, during the hot pressing operation of cell formation, the cells between adjacent cell formation jigs 100 are actually hot pressed by multiple stacked cell formation jigs 100. The multiple hollow cavities 211 spaced apart in the heating plate 21 can reduce the weight of the heating plate 21, thereby balancing the pressure applied to both sides of the cell by the cell formation jigs 100. This ensures that the two sides of the cell are subjected to uniform force, effectively avoiding the problem of poor cell thickness consistency caused by excessive pressure difference between the two sides of the cell during the hot pressing operation.
[0045] Furthermore, as one specific implementation method in some embodiments of this utility model, such as Figure 2 , Figure 5 and Figure 6 As shown, the mounting part 111 is provided with a mounting plate 112. The mounting plate 112 is located on the side of the mounting hole 1111 away from the first end face 121. The mounting plate 112 is provided with a buckle hole 1121. The bottom of the forming clamp 31 is provided with a buckle 3122. The buckle 3122 is fastened to the buckle hole 1121 to fix the forming clamp 31.
[0046] Understandably, compared to directly installing the forming clip 31 on the wall of the mounting hole 1111, setting the mounting plate 112 can provide a larger installation position for the forming clip 31. While facilitating the installation of the forming clip 31, it can also increase the stability of the installation of the forming clip 31 and prevent the forming clip 31 from loosening or shifting during use.
[0047] This utility model also discloses a cell formation cabinet, which includes the cell formation fixture 100 as described above. The beneficial effects of using the cell formation fixture 100 in the cell formation cabinet have been explained in the description of the cell formation fixture 100 above, and will not be repeated here.
[0048] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.
Claims
1. A cell formation fixture, characterized in that, include: The formation assembly includes a housing for placing battery cells and a clamping plate having a mounting portion disposed inside the housing, and the mounting portion exposed outside the housing, the mounting portion having a recessed mounting hole; A heating assembly is disposed within the housing, and the heating assembly is used to heat the battery cell; A clamping assembly is disposed within the mounting hole, the clamping assembly being used to clamp the tabs of the battery cell.
2. The cell formation fixture according to claim 1, characterized in that, The clamping assembly includes two forming clips, both of which are disposed within the mounting hole. One of the two forming clips is used to clamp the negative tab of the battery cell, and the other is used to clamp the positive tab of the battery cell.
3. The cell formation fixture according to claim 2, characterized in that, The forming clamp includes an upper clamp and a lower clamp, the upper clamp and the lower clamp are movably connected to clamp the tabs of the battery cell, the lower clamp is at least partially accommodated in the mounting hole, and the upper clamp is located outside the mounting hole.
4. The cell formation fixture according to claim 3, characterized in that, The clamping assembly also includes a connecting rod. The upper clamping plates of the two chemical forming clamps are provided with connecting holes. The connecting rod passes through the connecting holes to connect the upper clamping plates of the two chemical forming clamps.
5. The cell formation fixture according to claim 3, characterized in that, The upper clamping plate has an upper guide plate on the side facing the lower clamping plate, and the lower clamping plate has a lower guide plate on the side facing the upper clamping plate. The electrode of the battery cell is clamped between the upper guide plate and the lower guide plate and is electrically connected to the upper guide plate and the lower guide plate.
6. The cell formation fixture according to any one of claims 1-5, characterized in that, The heating assembly includes a heating element and a heating plate. The housing includes a first end face and a second end face disposed opposite to each other. The first end face is used to place the battery cell. The clamping plate is disposed inside the housing on the side near the first end face. The heating plate is disposed inside the housing on the side near the second end face. The heating element is clamped between the heating plate and the clamping plate.
7. The cell formation fixture according to claim 6, characterized in that, The heating element is a silicone heating element.
8. The cell formation fixture according to claim 6, characterized in that, The heating plate has multiple hollow cavities spaced apart inside.
9. The cell formation fixture according to claim 6, characterized in that, The mounting part is provided with a mounting plate, which is located on the side of the mounting hole away from the first end face. The mounting plate is provided with a buckle hole, and the bottom of the chemical forming clamp is provided with a buckle. The buckle is engaged with the buckle hole to fix the chemical forming clamp.
10. A cell formation cabinet, characterized in that, Includes the cell formation fixture according to any one of claims 1-9.