A lithium ion battery tab height adjusting device
By using a lithium-ion battery tab height adjustment device, which employs a laser displacement sensor and an adjustable base clamp, the problem of inconsistent tab welding was solved, thereby improving welding quality and cell clamping stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING GUOXUAN NEW ENERGY CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-08-04
AI Technical Summary
Currently, in the lithium-ion battery electrode welding process, inconsistent electrode distances lead to incomplete welding or root tearing, affecting the welding qualification rate.
A lithium-ion battery tab height adjustment device was designed. The tab height is measured by a laser displacement sensor, and the battery cell is clamped by an adjustable height base and clamps to ensure that the tab height is consistent. A tension spring is used to provide clamping force, the clamping parts are equipped with rubber pads for cushioning, and a guide rod ensures stability.
This achieves uniformity in electrode height before welding, reduces welding damage, improves welding qualification rate, and ensures cell clamping stability and buffering effect.
Smart Images
Figure CN224587328U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of batteries, and in particular to a lithium-ion battery tab height adjustment device. Background Technology
[0002] The development of new energy vehicles is accelerating. Currently, one of the main components of new energy vehicles is the power battery. Power batteries typically separate the cells into multiple modules, each containing multiple cells. Each cell has a positive tab and a negative tab. The tabs are exposed metal that conducts electricity and usually need to be welded to extend their length to meet the cell installation requirements. Currently, ultrasonic welding is used for tab welding. In the actual welding process, the distance between the tab and the upper and lower blades of the welding machine is not uniform, which may lead to incomplete tab welding or tearing at the base of the tab, affecting the pass rate of tab welding.
[0003] Therefore, this utility model provides a lithium-ion battery tab pre-welding and height measurement device to solve the above problems. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a lithium-ion battery tab height adjustment device to solve the problem that the tab height cannot be measured before the battery cell tab is welded.
[0005] Based on the technical problems existing in the background art, this utility model proposes a lithium-ion battery tab height adjustment device, including a worktable and a base on the worktable for placing battery cells. The base has clamps that can hold battery cells rotatably mounted on both sides via support arms. A laser displacement sensor that can measure the height of the battery cell tabs is installed on the side of the support arms. The height of the base can be adjusted to adjust the height of the tabs.
[0006] In the above scheme, the height of the battery cell determines the height of the tab. After the battery cell is fixed on the base by the clamp, the height of the base can be adjusted up and down to change the height of the battery cell, and thus change the height of the tab, so as to meet the uniform height standard of the tab and reduce the damage to the tab during the welding process. At the same time, the clamp can be adaptively adjusted as the base is raised and maintain the clamping and fixing effect on the battery cell.
[0007] Preferably, the bottom of the support arm is fixed to the workbench by bolts, the middle part of the clamp is rotatably connected to the top of the support arm, and a tension spring is connected between the clamp and the support arm, with the tension spring located on the side of the support arm closer to the battery cell.
[0008] In the above solution, the clamp can place the battery cell by pressing the side away from the battery cell. The clamping force of the clamp is provided by the tension spring. The tension spring can pull the clamp closer to the battery cell and clamp it. When the battery cell moves upward with the base, the clamp can still maintain the clamping effect under the action of the tension spring.
[0009] Preferably, a connector extends downward from the end of the clamp near the battery cell, and the clamp is rotatably mounted on the connector.
[0010] In the above scheme, the clamping component is rotatably connected to the clamp. When different angles are formed between the clamp and the support arm, the clamping component can always maintain the plane clamping the battery cell, which can avoid the phenomenon of excessive clamping causing deformation of the battery cell surface.
[0011] Preferably, a rubber pad is attached to the side of the clamp facing the battery cell.
[0012] In the above scheme, the rubber pad attached to the clamping component has deformation capability, which enables the side of the clamping component that holds the battery cell to have elastic change, thus having a buffering effect and reducing the deformation of the battery cell.
[0013] Preferably, the base includes a fixed seat and a movable seat, the movable seat is longitudinally slidably mounted above the fixed seat, and the fixed seat is threadedly fitted with a stud that can abut against the movable seat from the bottom of the fixed seat upwards.
[0014] In the above scheme, the movable seat can be adjusted by rotating the stud, which will support the fixed seat to maintain the required height.
[0015] Preferably, at least two guide rods are installed at the bottom of the movable seat, the guide rods passing through the fixed seat and being able to slide relative to the fixed seat.
[0016] In the above scheme, the guide rod can maintain the stability of the moving seat relative to the fixed seat, and with the help of the stud, the moving seat will not shift relative to the fixed seat.
[0017] Preferably, the movable seat is made of rubber and the tension spring is in a stretched state.
[0018] In the above solution, the material of the movable base can provide cushioning for the support of the battery cell, preventing excessive compression and deformation of the battery cell, while the tension spring needs to maintain tension at all times.
[0019] Compared with the prior art, the lithium-ion battery tab height adjustment device proposed in this utility model adopts the above-mentioned technical solution and achieves the following technical effects:
[0020] This invention can measure the height of the tab on the device using a sensor, and adjust the height of the battery cell by adjusting the height of the base to adapt to the uniform height standard of the tab before welding. This invention can tighten the clamp with a tension spring, and can clamp both sides of the battery cell at the same time to ensure the stability of the battery cell clamping. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0022] Figure 2 This is a schematic diagram of the base structure of this utility model.
[0023] In the diagram: 1. Workbench; 100. Battery cell; 2. Base; 3. Fixture; 4. Support arm; 101. Electrode; 5. Laser displacement sensor; 6. Tension spring; 31. Connector; 32. Clamping component; 33. Rubber pad; 21. Fixed seat; 22. Moving seat; 23. Stud; 24. Guide rod. Detailed Implementation
[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0025] Example
[0026] Please refer to Figures 1-2 This utility model proposes a pre-welding height measuring device for lithium-ion battery tabs 101, including a workbench 1 and a base 2 on the workbench 1 for placing battery cells 100. Clamps 3 for holding battery cells 100 are rotatably mounted on both sides of the base 2 via support arms 4. A laser displacement sensor 5 for measuring the height of the tabs 101 of the battery cells 100 is mounted on the side of the support arms 4. The height of the base 2 is adjustable, and the height of the tabs 101 can also be adjusted. In this design, one battery cell 100 can be placed on each base 2, and each base 2 is equipped with two clamps 3 for holding the battery cells 100. The two clamps 3 are located on both sides of the base 2. When the battery cell 100 needs to be installed, the end of the clamp 3 away from the base 2 is pressed, and the battery cell 100 is placed on the base 2. The clamp 3 is then released to hold the battery cell 100. The height of the tabs 101 is measured by the laser displacement sensor 5, and the height of the base 2 is adjusted to make the height of the tabs 101 reach a uniform standard height.
[0027] For detailed implementation plans, refer to Figure 1 , Figure 2The bottom of the support arm 4 is fixed to the workbench 1 by bolts. The middle part of the clamp 3 is rotatably connected to the top of the support arm 4. A tension spring 6 is connected between the clamp 3 and the support arm 4. The tension spring 6 is located on the side of the support arm 4 closer to the battery cell 100. In this solution, the support arm 4 can raise the height of the clamp 3, so that the clamp 3 can handle battery cells 100 of various thicknesses. The clamp 3 can be tilted up by pressing the end away from the battery cell 100, making it easier for personnel to place the battery cell 100 on the base 2 for clamping. The tension spring 6 can provide tension to the clamp 3, giving the clamp 3 a tendency to flip towards the battery cell 100. The clamp 3 can clamp the battery cell 100 under the action of the tension spring 6. In a further embodiment, the end of the clamp 3 away from the battery cell 100 can be connected to a cylinder or an electronic drive mechanism that can pull the clamp 3 to rotate to facilitate opening the clamp 3 for use.
[0028] For detailed implementation plans, refer to Figure 1 , Figure 2 The clamp 3 extends downward from one end near the cell 100, with a connecting member 31. The connecting member 31 is rotatably mounted with a clamping member 32. In this design, the clamping member 32 can rotate relative to the end of the clamp 3. When the clamp 3 is clamping the cell 100, the angle between the clamp 3 and the support arm 4 will change due to the different thickness of the cell 100 or the different height of the base 2. The area of clamping the cell 100 will also change. The cell 100 may deform due to the small force area. Therefore, after the clamping member 32 rotates relative to the connecting member 31, it can better fit the surface of the cell 100 and reduce the possibility of squeezing and deforming the cell 100.
[0029] For detailed implementation plans, refer to Figure 1 , Figure 2 A rubber pad 33 is attached to the side of the clamping member 32 facing the battery cell 100. In this solution, the clamping member 32 can be made of metal or hard material. When clamping the battery cell 100, it may cause deformation of the surface of the battery cell 100. Therefore, the rubber pad 33 is installed to buffer and reduce the possibility of deformation of the surface of the battery cell 100.
[0030] For detailed implementation plans, refer to Figure 1 , Figure 2The base 2 includes a fixed base 21 and a movable base 22. The movable base 22 is slidably mounted on the fixed base 21. The fixed base 21 is threaded with a stud 23 that can abut against the movable base 22 from the bottom of the fixed base 21. In this solution, when it is necessary to adjust the height of the movable base 22, it can be adjusted by rotating the stud 23. The stud 23 and the movable base 22 only have an abutting effect. At least two guide rods 24 are installed at the bottom of the movable base 22. The guide rods 24 pass through the fixed base 21 and can slide relative to the fixed base 21. The guide rods 24 can also provide a guiding effect for the movable base 22, so that the movable base 22 can only move in the longitudinal direction. At the same time, the guide rods 24 can also ensure the stability of the movable base 22.
[0031] For detailed implementation plans, refer to Figure 1 , Figure 2 The movable seat 22 is made of rubber, and the tension spring 6 is in the extended state.
[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and the inventive concept of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A lithium ion battery tab height adjustment device, characterized by, It includes a workbench (1) and a base (2) on the workbench (1) for placing the battery cell (100). The base (2) has clamps (3) that can hold the battery cell (100) mounted on both sides via support arms (4). A laser displacement sensor (5) that can measure the height of the battery cell (100) tab (101) is mounted on the side of the support arm (4). The base (2) can be adjusted in height and the height of the tab (101) can be adjusted.
2. The lithium-ion battery tab height adjustment device of claim 1, wherein, The bottom of the support arm (4) is fixed to the workbench (1) by bolts. The middle part of the clamp (3) is rotatably connected to the top of the support arm (4). A tension spring (6) is connected between the clamp (3) and the support arm (4). The tension spring (6) is located on the side of the support arm (4) close to the battery cell (100).
3. The lithium-ion battery tab height adjustment device of claim 1, wherein, The clamp (3) has a connector (31) extending downward from the end near the cell (100), and the connector (31) is rotatably mounted with a clamping member (32).
4. The lithium-ion battery tab height adjustment device of claim 3, wherein, A rubber pad (33) is attached to the side of the clamp (32) facing the cell (100).
5. The lithium-ion battery tab height adjustment apparatus of claim 1, wherein, The base (2) includes a fixed seat (21) and a movable seat (22). The movable seat (22) is slidably mounted on the fixed seat (21) in the longitudinal direction. The fixed seat (21) is threaded with a stud (23) that can abut against the movable seat (22) from the bottom of the fixed seat (21).
6. The lithium-ion battery tab height adjustment device of claim 5, wherein, At least two guide rods (24) are installed at the bottom of the movable seat (22). The guide rods (24) pass through the fixed seat (21) and can slide relative to the fixed seat (21).
7. The lithium-ion battery tab height adjustment device according to claim 5, characterized in that, The movable seat (22) is made of rubber.
8. The lithium-ion battery tab height adjustment device according to claim 2, characterized in that, The tension spring (6) is in the stretched state.