A clamping device for correcting deviation of an electrode core body and a shell cover and a shell cover welding machine
Patent Information
- Application Number
- CN202521622718.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-31
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-07-31
AI Technical Summary
目前的生产方式是将电芯和壳盖固定在治具上，然后再将电芯集流体和壳盖焊接，现有的夹持治具在电芯和壳盖上料后，无法对壳盖和电芯的位置进行纠偏，如若不对准集流体的位置和壳盖的位置，在壳盖焊接以及入壳过程容易导致集流体被错位压伤，从而导致产品不良，并且现有的壳盖焊接机的机械运动流程较为繁琐，存在生产效率低的问题
[0011]优选的，一种壳盖焊接机，包括上述的可纠偏电芯主体和壳盖的夹持装置、以及回流输送线，所述电芯壳盖夹持装置安装在所述回流输送线上，在所述回流输送线的输送路径上设置有焊接机构。通过旋转组件带动电芯夹持组件旋转，以实现对电芯集流体和壳盖的位置进行纠偏，再通过回流输送线将电芯壳盖夹持装置输送到焊接机构，焊接机构对电芯的集流体与壳盖进行焊接，提高焊接精度和生产效率。
Smart Images
Figure CN224866626U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of clamping device technology, and in particular to a clamping device and a shell welding machine for a battery cell body and a shell cover that can correct polarization. Background Technology
[0002] In the current production process of cylindrical batteries, the casing needs to be welded to the current collector on the cylindrical cell body. The current collector stands upright on one edge of the cell body. During welding, the current collector at the edge of the cell body needs to be close to the casing, and the center of the current collector needs to be aligned with the center of the casing. The current production method is to fix the cell and casing on a fixture, and then weld the current collector to the casing. The existing clamping fixture cannot correct the position of the casing and cell after the cell and casing are loaded. If the position of the current collector and the casing is not aligned, the current collector is easily misaligned and damaged during the casing welding and casing insertion process, resulting in product defects. Furthermore, the mechanical movement process of the existing casing welding machine is relatively cumbersome, resulting in low production efficiency. Utility Model Content
[0003] To address one of the aforementioned technical problems, this application provides a clamping device for correcting the alignment of a battery cell body and a casing, including a mounting base, a support platform disposed on the mounting base for placing the casing, a casing clamping assembly for fixing the casing on one side of the support platform on the mounting base, a battery cell clamping assembly for clamping the battery cell body disposed on the side of the mounting base near the support platform, and a displacement module connected to the casing clamping assembly disposed on the mounting base. The displacement module is used to drive the casing clamping assembly to adjust its position above the support platform to correct the relative position of the casing and the battery cell body. Therefore, when there is a positional deviation between the battery cell body and the casing after loading, the displacement module drives the casing clamping assembly to adjust its position above the support platform, thereby adjusting the position of the casing on the support platform. This ensures that the current collector of the battery cell corresponds to the center position of the casing, thus guaranteeing the welding accuracy of the current collector and the casing, while improving welding efficiency.
[0004] Preferably, the displacement module includes a mounting platform slidably disposed on the side of the mounting base, a slider slidably disposed on the mounting platform, a push block connected to the side of the slider, and a push driver connected to the push block. The cover clamping assembly is disposed on the slider. The slider is horizontally slidably disposed on the mounting platform via a slide rail, thereby allowing the cover clamping assembly to move horizontally, thus moving the cover clamping assembly away from the support platform and providing space for cover loading. The push driver may consist of a cylinder and a push plate, connected to the push block via the push plate, thereby driving the push block to move back and forth, causing the push block to move the cover clamping assembly, thereby adjusting the position of the cover on the support platform 20.
[0005] Preferably, a rotating assembly is rotatably mounted on the mounting base. At one end of the rotating assembly near the support platform, a cell clamping assembly is provided for clamping the battery cell. The rotating assembly drives the cell clamping assembly to rotate relative to the support platform. By driving the cell clamping assembly to rotate, the rotating assembly drives the battery cell to rotate, thereby completing the alignment correction. This ensures that the current collector on the outer side of the battery cell is close to the casing, and that the current collector corresponds to the center position of the casing, thus guaranteeing the welding accuracy of the current collector and the casing, while improving welding efficiency.
[0006] Preferably, the cell clamping assembly includes a mounting block connected to the rotating assembly and a first clamping block rotatably mounted on the mounting block. A positioning block is provided on the surface of the mounting block facing the support platform. The first clamping block and the positioning block clamp and fix the cell. The positioning block supports the cell from below, and the first clamping block abuts against the two sides above the cell, thereby fixing the cell through the cooperation of the first clamping block and the positioning block. The rotating assembly can drive the mounting block to rotate, thereby adjusting the position of the cell current collector and the casing, improving welding accuracy.
[0007] Preferably, the first clamping block has a clamping end at one end near the support platform and an opening end at the other end. The middle part of the clamping block is pivotally connected to the mounting block via a rotating shaft. By applying external force to the opening end, the first clamping block rotates along the rotating shaft, thereby controlling the clamping end to clamp and release the battery cell.
[0008] Preferably, the assembly further includes photoelectric detectors positioned above and below the support platform. These photoelectric detectors are used to detect the center positions of the current collector and the casing. By detecting the offset of the current collector and the casing using the photoelectric detectors, the rotating assembly drives the cell clamping assembly to rotate, thereby aligning the center of the current collector with the center of the casing, thus ensuring the welding accuracy of the current collector and the casing.
[0009] Preferably, the device further includes an opening clamping drive assembly, which abuts against the opening clamping end to fix or release the battery cell at the clamping end. Furthermore, the opening clamping drive assembly acts on the opening clamping end, causing the first clamping block to rotate along the pivot axis, thereby fixing or releasing the battery cell at the clamping end.
[0010] Preferably, the rotating assembly includes a bearing housing mounted on the mounting base, and a rotating shaft connected to the mounting block is disposed on the bearing housing. The rotating shaft is connected to a rotating driver. For example, the rotating driver may be a motor, with the rotating end of the motor connected to the rotating shaft and the other end of the rotating shaft connected to the mounting block, thereby driving the rotating shaft and the mounting block to rotate, thus rotating the battery cell for correction.
[0011] Preferably, a casing welding machine includes the aforementioned clamping device for the correctable battery cell body and casing, and a return conveyor line. The battery cell casing clamping device is installed on the return conveyor line, and a welding mechanism is arranged on the conveying path of the return conveyor line. A rotating component drives the battery cell clamping component to rotate, thereby correcting the position of the battery cell current collector and casing. The battery cell casing clamping device is then conveyed to the welding mechanism via the return conveyor line, where the welding mechanism welds the current collector of the battery cell to the casing, improving welding accuracy and production efficiency.
[0012] Compared with the prior art, the beneficial effects of this application are as follows: This application sets a support platform on the mounting base, and a shell cover clamping assembly is set on one side of the support platform on the mounting base to fix the shell cover. A cell clamping assembly for clamping the battery cell is set on the side of the mounting base near the support platform, and a displacement module connected to the shell cover clamping assembly is set on the mounting base. The displacement module is used to drive the shell cover clamping assembly to adjust its position above the support platform. Therefore, when there is a positional deviation between the battery cell body and the shell cover after loading, the displacement module drives the shell cover clamping assembly to adjust its position above the support platform, thereby adjusting the position of the shell cover on the support platform, so that the current collector of the battery cell corresponds to the center position of the shell cover, thereby ensuring the welding accuracy of the current collector of the battery cell and the shell cover, and improving the welding efficiency. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only a part of the embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the clamping device for the correctable battery cell body and the casing in an embodiment of this application.
[0015] Figure 2 This is a side view of the clamping device for the correctable battery cell body and the casing according to an embodiment of this application;
[0016] Figure 3 This is an enlarged schematic diagram of the clamping device for the correctable battery cell body and the casing in an embodiment of this application;
[0017] Figure 4 This is a rear view of the clamping device for the correctable battery cell body and the casing according to an embodiment of this application.
[0018] Figure Labels
[0019] 10. Mounting base; 11. Support plate; 20. Bearing platform; 30. Cell clamping assembly; 31. Mounting block; 311. Positioning block; 32. First clamping block; 321. Clamping end; 322. Opening clamping end; 40. Shell and cover clamping assembly; 41. Shell and cover clamping assembly; 50. Rotation assembly; 51. Bearing seat; 52. Rotation shaft; 60. Displacement module; 61. Pushing block; 62. Slider; 63. Mounting platform; 64. Lifting block. Detailed Implementation
[0020] The following drawings disclose several embodiments of this application. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this application. That is, in some embodiments of this application, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.
[0021] It should be noted that all directional indications in the embodiments of this application, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.
[0022] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit this application. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0023] To further understand the content, features, and effects of this application, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings:
[0024] To address the aforementioned technical problems, this embodiment provides a clamping device for the correctable battery cell body and casing, such as... Figure 1-2As shown, it includes a mounting base 10 and a support platform 20 disposed on the mounting base 10 for placing the cover. A cover clamping assembly 40 is disposed on the mounting base 10 on one side of the support platform 20. After the cover is placed on the support platform 20, the cover is fixed by the cover clamping assembly 40. A cell clamping assembly 30 is provided on the side of the mounting base 10 near the support platform 20. The cell clamping assembly 30 clamps the cell. A displacement module 60 connected to the cover clamping assembly 40 is provided on the mounting base 10. The displacement module 60 is used to correct the relative position of the cover and the cell body. When there is a positional deviation between the cell body and the cover after loading, the displacement module 60 drives the cover clamping assembly 40 to adjust its position above the support platform 20, thereby adjusting the position of the cover on the support platform 20 and correcting the relative position of the cover and the cell body. This ensures that the current collector of the cell corresponds to the center position of the cover, thereby ensuring the welding accuracy of the current collector and the cover and improving the welding efficiency.
[0025] Furthermore, the displacement module 60 includes a mounting platform 63 slidably disposed on the side of the mounting base 10, a slider 62 slidably disposed on the mounting platform 63, a push block 61 connected to the side of the slider 62, and a push driver connected to the push block 61. The cover clamping assembly 40 is disposed on the slider 62. The push driver drives the cover clamping assembly 40 to move. For example, the push driver may be composed of a cylinder and a push plate, which is connected to the push block 61. By driving the push block 61 to move back and forth, the push block 61 moves the cover clamping assembly 40 above the support platform 20, thereby adjusting the position of the cover so that the current collector of the battery cell corresponds to the center position of the cover, thereby improving the welding accuracy.
[0026] Furthermore, a lifting block 64 is slidably disposed on the side of the mounting base 10, and a mounting platform 63 is disposed on the lifting block 64. Specifically, the lifting block 64 is slidably disposed on the side of the mounting base 10 via a slide rail, and the mounting platform 63 is disposed on the lifting block 64, thereby allowing the mounting platform 63 to move vertically. The slider 62 is horizontally disposed on the mounting platform 63 via a slide rail, thereby allowing the cover clamping assembly 40 to move horizontally, thus moving the cover clamping assembly 40 away from the support platform 20 and providing space for cover loading. The push block 61 is connected to the slider 62. In some embodiments, the push block 61 can be driven by a push driver to move vertically and horizontally, thereby driving the cover clamping assembly 40 to move vertically and horizontally, thereby adjusting the position of the cover on the support platform 20. In some embodiments, the cover clamping assembly 40 can be a clamping block, pneumatic gripper, or other clamping structure.
[0027] Furthermore, a rotating assembly 50 is rotatably mounted on the mounting base 10. A cell clamping assembly 30 is provided at one end of the rotating assembly 50 near the support platform 20. After the cell body is fed into the cell clamping assembly 30, the cylindrical cell body is clamped and fixed by the cell clamping assembly 30. The rotating assembly 50 is used to drive the cell clamping assembly 30 to rotate relative to the support platform 20. When there is a deviation between the current collector on the cell body and the shell cover, the rotating assembly 50 drives the cell clamping assembly 30 to rotate, thereby causing the cell body to rotate to complete the correction. This makes the current collector on the outside of the cell body closer to the shell cover, and makes the current collector correspond to the center position of the shell cover, thereby ensuring the welding accuracy of the current collector and the shell cover of the cell body, and improving the welding efficiency.
[0028] Specifically, a support plate 11 is fixed to the side of the mounting base 10, and a support platform 20 is disposed on the support plate 11. A cover clamping assembly 40 is located below the support plate 11 and extends from the side of the support plate 11 to above the support platform 20, thereby clamping and fixing the cover onto the support platform 20. A cell clamping assembly 30 is disposed above the support plate 11, thereby clamping and fixing the outer circumferential surface of the cell body. The current collector located on the outer circumferential surface of the cell body is close to the cover, facilitating subsequent welding of the current collector to the cover.
[0029] Furthermore, in order to achieve clamping of the battery cell body, such as Figure 3 As shown, the battery cell clamping assembly 30 includes a mounting block 31 connected to the rotating assembly 50 and a first clamping block 32 rotatably mounted on the mounting block 31. A positioning block 311 is provided on the surface of the mounting block 31 facing the support platform 20. The first clamping block 32 and the positioning block 311 clamp and fix the battery cell body. The positioning block 311 supports the bottom of the battery cell, and the first clamping block 32 abuts against the two sides above the battery cell, thereby fixing the battery cell body through the cooperation of the first clamping block 32 and the positioning block 311. The rotating assembly 50 can drive the mounting block 31 to rotate, thereby adjusting the position of the battery cell current collector and the shell cover, improving welding accuracy.
[0030] Furthermore, the first clamping block 32 has a clamping end 321 at one end near the support platform 20, and an opening end 322 at the other end. The middle part of the clamping block 30 is pivotally connected to the mounting block 31 via a rotating shaft. When an external force is applied to the opening end 322, the first clamping block 32 rotates along the rotating shaft, thereby controlling the clamping end 321 to release the battery cell. In some embodiments, a retaining ring can be provided on the rotating shaft. When the external force applied to the opening end 322 is removed, the retaining ring can be used to rotate and reset the first clamping block 32, thereby achieving the clamping and fixing of the battery cell.
[0031] In the above scheme, the cell clamping assembly 30 also includes an opening clamping drive assembly, which abuts against the opening clamping end 322. The opening clamping drive assembly acts on the opening clamping end 322, causing the first clamping block 32 to rotate along the pivot, thereby fixing or releasing the cell body at the clamping end 321. For example, the opening clamping drive assembly can be a cylinder and a push plate connected to the cylinder's extension end. The push plate abuts against the opening clamping end 322, causing the clamping end 321 to open, allowing the cell body to be placed on the positioning block 311 of the mounting block 31, or to be removed from the mounting block 31.
[0032] Furthermore, the current collector is positioned on the outer circumference of the cylindrical cell, near the casing. The center of the casing is perpendicular to the center of the cylindrical cell. Before welding, the current collector and the center of the casing need to be aligned. To this end, this solution also includes photoelectric detectors positioned above and below the support platform 20. These photoelectric detectors detect the center positions of the current collector and the casing. By detecting the offset of the current collector and the casing using the photoelectric detectors, the rotation assembly 50 drives the cell clamping assembly 30 to rotate, aligning the center of the current collector with the center of the casing, thus ensuring the welding accuracy of the current collector and the casing. For example, the photoelectric detector can be a vision camera, which acquires images of the current collector and the casing and analyzes the offset values. The rotation assembly 50 then corrects the cell's position based on these offset values.
[0033] Specifically, such as Figure 4 As shown, the rotating assembly 50 includes a bearing housing 51 mounted on the mounting base 10. A rotating shaft 52 connected to the mounting block 31 passes through the bearing housing 51, and the rotating shaft 52 is connected to a rotating driver. For example, the rotating driver can be a motor, with its rotating end connected to the rotating shaft 52 and the other end connected to the mounting block 31, thereby driving the rotating shaft 52 and the mounting block 31 to rotate, thus rotating the battery cell for alignment correction. For example, the rotating end of the motor can be equipped with a pneumatic gripper, which clamps the rotating shaft 52 to drive its rotation and correct the battery cell position. After the battery cell position is adjusted, the pneumatic gripper releases the rotating shaft 52, causing the rotating driver to separate from the rotating shaft 52, and the clamping device can be transported to the next workstation.
[0034] On the other hand, this embodiment provides a casing welding machine, including the aforementioned clamping device for the correctable battery cell body and casing, and a return conveyor line. Multiple battery cell casing clamping devices are installed on the return conveyor line, and a welding mechanism is provided on the conveying path of the return conveyor line. The rotary driver can be set at a specific position on the conveying path of the return conveyor line. When the battery cell casing clamping device is conveyed to the position of the rotary driver, the rotary driver drives the rotating shaft on the clamping device to rotate, thereby driving the battery cell clamping assembly 30 to rotate, so as to correct the position of the battery cell current collector and the casing. Then, the battery cell casing clamping device is conveyed to the welding mechanism through the return conveyor line. The welding mechanism welds the current collector of the battery cell to the casing, thereby improving welding accuracy and production efficiency.
[0035] In summary, in one or more embodiments of this application, the solution involves setting a support platform on the mounting base, and a cover clamping assembly on one side of the support platform to fix the cover. A rotating assembly is rotatably mounted on the mounting base, and a cell clamping assembly is located at the end of the rotating assembly near the support platform. After the cell body is fed into the cell clamping assembly, the cylindrical cell body is clamped and fixed by the cell clamping assembly. The rotating assembly drives the cell clamping assembly to rotate relative to the support platform. Therefore, when there is a deviation between the current collector on the cell body and the cover, the rotating assembly drives the cell clamping assembly to rotate, thereby causing the cell body to rotate to complete the correction. This makes the current collector on the outside of the cell body closer to the cover, and makes the current collector correspond to the center position of the cover, thereby ensuring the welding accuracy of the current collector and the cover, and improving the welding efficiency.
[0036] The embodiments described above do not constitute a limitation on the scope of protection of this technical solution. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the above embodiments should be included within the scope of protection of this technical solution.
Claims
1. A clamping device for a polarization-correcting battery cell body and a casing, characterized in that: The device includes a mounting base (10), a support platform (20) disposed on the mounting base (10) for placing the cover, a cover clamping assembly (40) for fixing the cover is disposed on the mounting base (10) on one side of the support platform (20), a cell clamping assembly (30) for clamping the cell body is disposed on the mounting base (10) near the support platform (20), and a displacement module (60) connected to the cover clamping assembly (40) is disposed on the mounting base (10). The displacement module (60) is used to drive the cover clamping assembly (40) to adjust its position above the support platform (20) to correct the relative position of the cover and the cell body.
2. The clamping device for the correctable battery cell body and casing as described in claim 1, characterized in that: The displacement module (60) includes a mounting platform (63) slidably disposed on the side of the mounting base (10), a slider (62), a push block (61) connected to the side of the slider (62), and a push driver connected to the push block (61) slidably disposed on the mounting platform (63), and the cover clamping assembly (40) disposed on the slider (62).
3. The clamping device for the correctable battery cell body and casing according to claim 2, characterized in that: A lifting block (64) is slidably disposed on the side of the mounting base (10), and the mounting platform (63) is disposed on the lifting block (64).
4. The clamping device for the correctable battery cell body and casing according to claim 1, characterized in that: A rotating assembly (50) is rotatably disposed on the mounting base (10). The rotating assembly (50) is connected to the cell clamping assembly (30). The rotating assembly (50) drives the cell clamping assembly (30) to rotate relative to the support platform (20).
5. The clamping device for the correctable cell body and casing according to claim 4, characterized in that: The cell clamping assembly (30) includes a mounting block (31) connected to the rotating assembly (50) and a first clamping block (32) rotatably disposed on the mounting block (31). A positioning block (311) is provided on the surface of the mounting block (31) facing the support platform (20). The first clamping block (32) and the positioning block (311) clamp and fix the cell body.
6. The clamping device for the correctable cell body and casing according to claim 5, characterized in that: The first clamping block (32) has a clamping end (321) at one end near the support platform (20), and an opening end (322) at the other end. The middle part of the first clamping block (32) is pivotally connected to the mounting block (31) via a rotating shaft.
7. The clamping device for the correctable cell body and casing as described in claim 5, characterized in that: The rotating assembly (50) includes a bearing housing (51) mounted on the mounting base (10), on which a rotating shaft (52) connected to the mounting block (31) passes, and the rotating shaft (52) is connected to a rotating driver.
8. The clamping device for the correctable battery cell body and casing according to claim 1, characterized in that: It also includes photodetectors positioned above and below the support platform (20), which are used to detect the center position of the current collector and the casing of the battery cell body.
9. The clamping device for the correctable cell body and casing according to claim 6, characterized in that: It also includes an opening clamping drive assembly, which abuts against the opening clamping end (322) to fix or release the battery cell body at the clamping end (321).
10. A shell and cover welding machine, characterized in that: The device includes a clamping device for the correctable cell body and casing as described in any one of claims 1-9, and a return conveyor line, wherein the cell casing clamping device is installed on the return conveyor line, and a welding mechanism is provided on the conveying path of the return conveyor line.