A tool for quickly measuring burrs of lithium electrode sheets
Patent Information
- Application Number
- CN202521891785.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-03
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-09-03
AI Technical Summary
[0005]本实用新型的目的是为了解决现有技术中存在的调整时间长：显微镜需要与工装配合使用下需要逐步调整放大倍率和镜头焦距找到纵向截面，单次检测需5-10分钟（包括调焦、定位、多点复核），无法满足锂电池量产节奏；漏检率高：显微镜视场有限（通常＜10mm），纵向毛刺观察长度一般要求＞200mm，需频繁移动样品或镜头，容易因疲劳漏检；人力成本高：需专职检验员持续作业的缺点，而提出的一种快速测定锂电极片毛刺的工装
[0013]1、为了解决锂电极片毛刺检测不便的问题，如图所示，将电极片通过胶带固定到收卷转筒上并手摇收卷，收卷结束后通过胶带粘附固定，避免爆卷，然后翻转90°放置后使用聚焦镜头测试毛刺，这里通过六角块和六角柱与收卷转筒两侧开设的六角槽之间的插接，能够便于更换收卷转筒的方向测毛刺；
Smart Images
Figure CN224921741U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium battery production technology, and in particular to a tooling for rapidly measuring burrs on lithium electrode sheets. Background Technology
[0002] In the manufacturing process of lithium-ion batteries, edge burrs on the electrode sheets (positive and negative electrodes) are a key factor affecting the long-term storage and safety performance of the battery. Burrs can lead to internal short circuits and high self-discharge, which can severely cause thermal runaway and safety accidents. Therefore, after the electrode sheets are cut, their edge burrs must be accurately inspected to ensure that they meet the process standards (usually requiring a burr height ≤ 5μm).
[0003] Currently, the industry commonly uses manual visual inspection with the aid of a microscope to test electrode burrs. This method has the following drawbacks: 1. Long adjustment time: The microscope needs to be used in conjunction with tooling to gradually adjust the magnification and lens focal length to find the longitudinal section. A single inspection takes 5-10 minutes (including focusing, positioning, and multi-point verification), which cannot meet the pace of lithium battery mass production. 2. High false negative rate: The microscope has a limited field of view (usually <10mm), and the longitudinal burr observation length is generally required to be >200mm. Frequent movement of the sample or lens is required, which can easily lead to false negatives due to fatigue. 3. High labor costs: Requires dedicated inspectors to work continuously.
[0004] To address this problem, this application proposes a tooling for rapidly measuring burrs on lithium electrode sheets. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as long adjustment time (microscopes require step-by-step adjustments of magnification and lens focal length to find the longitudinal section, and a single inspection takes 5-10 minutes (including focusing, positioning, and multi-point verification), which cannot meet the pace of lithium battery mass production); high false negative rate (microscope field of view is limited (usually <10mm), and the longitudinal burr observation length is generally required to be >200mm, requiring frequent movement of samples or lenses, which can easily lead to false negatives due to fatigue); and high labor costs (requiring dedicated inspectors to work continuously). Therefore, this invention proposes a tooling for rapidly determining burrs on lithium electrode sheets.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: A fixture for rapidly determining burrs on lithium electrode sheets includes a main support plate, and the fixture further includes: The first ball bearing has a mounting hole on the left side of the main support plate, and the first ball bearing is fixedly installed inside the mounting hole. A support column is fixedly installed inside the first ball bearing. A hexagonal block, the left end of which is fixedly installed on the right end of the support column; The winding drum is located above the main support plate. Hexagonal slots are provided at both the left and right ends of the winding drum. The right end of the hexagonal block can be disengaged and inserted into the hexagonal slot on the left side. A hexagonal prism, the left end of which can be detached and inserted into a hexagonal slot on the right side; A support assembly is disposed on the top of the main support plate and cooperates with a hexagonal column.
[0007] In a preferred embodiment of this utility model, a first magnet is fixedly installed on the right end of the hexagonal block and the left end of the hexagonal prism, and a second magnet is fixedly installed on the inner wall of each of the two hexagonal slots, with the first magnet cooperating with the corresponding second magnet.
[0008] As a preferred embodiment of this utility model, a handle is fixedly installed at the right end of the hexagonal prism, and a rotating rod is fixedly installed on the right side of the handle.
[0009] In a preferred embodiment of this utility model, the support assembly includes a second ball bearing, a support rod, a movable plate, and a spring. The second ball bearing is fixedly sleeved on the hexagonal column, the top end of the support rod is fixedly installed at the bottom of the second ball bearing, the movable plate is slidably connected to the top of the main support plate, the bottom end of the support rod is fixedly installed at the top of the movable plate, and the left and right ends of the spring are respectively fixedly installed at the right side of the main support plate and the left end of the movable plate.
[0010] As a preferred embodiment of this utility model, an internal hexagonal sleeve is fixedly sleeved on the hexagonal column, and a second ball bearing is fixedly sleeved on the internal hexagonal sleeve.
[0011] As a preferred embodiment of this utility model, sliders are fixedly installed on both the front and rear sides of the movable plate, and two sliding grooves are opened on the top of the main support plate, with the bottom end of the slider slidably connected in the corresponding sliding groove.
[0012] As a preferred embodiment of this utility model, the winding drum is made of polytetrafluoroethylene. Beneficial effects
[0013] 1. To solve the problem of inconvenient burr detection of lithium electrode sheets, as shown in the figure, the electrode sheet is fixed to the winding drum with tape and wound by hand. After winding, it is fixed with tape to prevent bursting. Then, it is rotated 90° and the burr is tested with a focusing lens. Here, the hexagonal block and hexagonal column are connected to the hexagonal slots on both sides of the winding drum, which makes it easy to change the direction of the winding drum to test for burrs. 2. In order to improve the support stability of the right end of the winding drum and the hexagonal column, the second ball bearing is stably supported by the support rod and the moving plate. The hexagonal column can be stably rotated and supported by the second ball bearing. At the same time, the support rod and the moving plate can move laterally to facilitate the unlocking between the hexagonal block and the hexagonal column and the hexagonal slots opened on both sides of the winding drum, so as to facilitate the disassembly and assembly of the winding drum. This invention achieves the winding and fixing of electrode sheets through a simple structure, and facilitates the rotation and orientation of the electrode sheets, making it convenient to measure burrs on the electrode sheets. It is easy to operate, saves time and effort, and is highly practical. Attached Figure Description
[0014] Figure 1 This is a three-dimensional front view of the structure of this utility model; Figure 2 This is a three-dimensional view of a partial structure of the present invention; Figure 3 This is a cross-sectional view of the winding drum of this utility model; Figure 4 This is a three-dimensional structural diagram of the hexagonal prism, first magnet, handle, rotating rod, second ball bearing, internal hexagonal sleeve, and support rod of this utility model.
[0015] In the diagram: 1. Main support plate; 2. First ball bearing; 3. Support column; 4. Hexagonal block; 5. Hexagonal prism; 6. First magnet; 7. Handle; 8. Rotating rod; 9. Rewinding drum; 10. Hexagonal groove; 11. Second magnet; 12. Second ball bearing; 13. Internal hexagonal sleeve; 14. Support rod; 15. Moving plate; 16. Slider; 17. Slide groove; 18. Spring. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example
[0017] Reference Figures 1-4 A tooling for rapidly determining burrs on lithium electrode sheets includes a main support plate 1, and the tooling also includes: The first ball bearing 2 has a mounting hole on the left side of the main support plate 1. The first ball bearing 2 is fixedly installed inside the mounting hole, and a support column 3 is fixedly installed inside the first ball bearing 2. Hexagonal block 4, the left end of which is fixedly installed on the right end of support column 3; The winding drum 9 is located above the main support plate 1. Hexagonal slots 10 are provided at both the left and right ends of the winding drum 9. The right end of the hexagonal block 4 can be disengaged and inserted into the hexagonal slot 10 on the left side. Hexagonal prism 5, the left end of which can be disengaged and inserted into the hexagonal slot 10 on the right side; The support assembly is located on the top of the main support plate 1 and cooperates with the hexagonal column 5.
[0018] To address the inconvenience of burr detection on lithium electrode sheets, such as Figure 1 As shown, the electrode sheet is fixed to the winding drum 9 with tape and wound by hand. After winding, it is fixed with tape to prevent bursting. Then, it is rotated 90° and the burr is tested with a focusing lens. Here, the hexagonal block 4 and hexagonal post 5 are connected to the hexagonal slots 10 on both sides of the winding drum 9 to facilitate changing the direction of the winding drum 9 to test for burrs.
[0019] To improve the stability of the connection between the hexagonal block 4 and the hexagonal prism 5 and the hexagonal slots 10 on both sides of the winding drum 9, a first magnet 6 is fixedly installed on the right end of the hexagonal block 4 and the left end of the hexagonal prism 5, and a second magnet 11 is fixedly installed on the inner wall of each of the two hexagonal slots 10, with the first magnet 6 cooperating with the corresponding second magnet 11.
[0020] To facilitate the operation of the hexagonal column 5 and the winding drum 9, a handle 7 is fixedly installed on the right end of the hexagonal column 5, and a rotating rod 8 is fixedly installed on the right side of the handle 7.
[0021] To improve the support stability of the right end of the winding drum 9 and the hexagonal column 5, the second ball bearing 12 is stably supported by the support rod 14 and the movable plate 15. The second ball bearing 12 can stably support the rotation of the hexagonal column 5. At the same time, the support rod 14 and the movable plate 15 can move laterally on the second ball bearing 12, so that the hexagonal block 4 and the hexagonal column 5 can be unlocked from the hexagonal slots 10 opened on both sides of the winding drum 9, which facilitates the disassembly and assembly of the winding drum 9. The support assembly includes the second ball bearing 12, the support rod 14, the movable plate 15 and the spring 18. The second ball bearing 12 is fixedly sleeved on the hexagonal column 5. The top end of the support rod 14 is fixedly installed on the bottom of the second ball bearing 12. The movable plate 15 is slidably connected to the top of the main support plate 1. The bottom end of the support rod 14 is fixedly installed on the top of the movable plate 15. The left and right ends of the spring 18 are fixedly installed on the right side of the main support plate 1 and the left end of the movable plate 15, respectively.
[0022] To facilitate the installation between the second ball bearing 12 and the hexagonal column 5, an internal hexagonal sleeve 13 is fixedly fitted on the hexagonal column 5, and the second ball bearing 12 is fixedly fitted on the internal hexagonal sleeve 13.
[0023] In order to provide stable sliding support for the movable plate 15, sliders 16 are fixedly installed on the front and rear sides of the movable plate 15. Two grooves 17 are opened on the top of the main support plate 1, and the bottom end of the slider 16 is slidably connected in the corresponding groove 17.
[0024] To improve the service life of the winding drum 9, and because polytetrafluoroethylene (PTFE) is a self-lubricating engineering plastic that is wear-resistant, the winding drum 9 is made of PTFE.
[0025] The working principle of this utility model is as follows: In use, the electrode sheet is first fixed to the winding drum 9 with tape and then manually wound. After winding, it is fixed with tape to prevent bursting. Then, it is rotated 90° and the focusing lens is used to test for burrs. Here, the hexagonal block 4 and hexagonal column 5 are inserted into the hexagonal slots 10 on both sides of the winding drum 9, which facilitates changing the direction of the winding drum 9 to test for burrs. In addition, the support rod 14 and the moving plate 15 provide stable support for the second ball bearing 12, which can stably support the rotation of the hexagonal column 5. At the same time, the support rod 14 and the moving plate 15 can move laterally on the second ball bearing 12, so that the hexagonal block 4 and hexagonal column 5 can be unlocked from the hexagonal slots 10 on both sides of the winding drum 9, which facilitates the disassembly and assembly of the winding drum 9.
[0026] 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 tooling for rapidly measuring burrs on lithium electrode sheets, comprising a main support plate (1), characterized in that, The tooling also includes: The first ball bearing (2) has an installation hole on the left side of the main support plate (1). The first ball bearing (2) is fixedly installed inside the installation hole, and a support column (3) is fixedly installed inside the first ball bearing (2). Hexagonal block (4), the left end of which is fixedly installed on the right end of the support column (3); The winding drum (9) is located above the main support plate (1). The left and right ends of the winding drum (9) are provided with hexagonal slots (10). The right end of the hexagonal block (4) can be disengaged and inserted into the hexagonal slot (10) on the left side. Hexagonal prism (5), the left end of which can be disengaged and inserted into the hexagonal slot (10) on the right side; The support assembly is located on the top of the main support plate (1) and cooperates with the hexagonal column (5).
2. The tooling for rapidly determining burrs on lithium electrode sheets according to claim 1, characterized in that, The right end of the hexagonal block (4) and the left end of the hexagonal prism (5) are both fixedly installed with a first magnet (6), and the inner walls of the two hexagonal slots (10) are both fixedly installed with a second magnet (11). The first magnet (6) and the corresponding second magnet (11) cooperate with each other.
3. The tooling for rapidly determining burrs on lithium electrode sheets according to claim 1, characterized in that, A handle (7) is fixedly installed on the right end of the hexagonal prism (5), and a rotating rod (8) is fixedly installed on the right side of the handle (7).
4. The tooling for rapidly determining burrs on lithium electrode sheets according to claim 1, characterized in that, The support assembly includes a second ball bearing (12), a support rod (14), a movable plate (15), and a spring (18). The second ball bearing (12) is fixedly sleeved on the hexagonal column (5). The top end of the support rod (14) is fixedly installed at the bottom of the second ball bearing (12). The movable plate (15) is slidably connected to the top of the main support plate (1). The bottom end of the support rod (14) is fixedly installed at the top of the movable plate (15). The left and right ends of the spring (18) are respectively fixedly installed on the right side of the main support plate (1) and the left end of the movable plate (15).
5. The tooling for rapidly determining burrs on lithium electrode sheets according to claim 4, characterized in that, An internal hexagonal sleeve (13) is fixedly fitted on the hexagonal column (5), and a second ball bearing (12) is fixedly fitted on the internal hexagonal sleeve (13).
6. The tooling for rapidly determining burrs on lithium electrode sheets according to claim 4, characterized in that, The front and rear sides of the movable plate (15) are fixedly equipped with sliders (16), and the top of the main support plate (1) has two grooves (17), and the bottom end of the slider (16) is slidably connected in the corresponding groove (17).
7. The tooling for rapidly determining burrs on lithium electrode sheets according to claim 1, characterized in that, The winding drum (9) is made of polytetrafluoroethylene.