A lithium battery pole piece thickness measuring device
By combining the mounting base, adjustment components, and calibration module, dynamic and accurate measurement and rapid calibration of lithium battery electrode thickness are achieved, solving the problems of insufficient positioning accuracy and insufficient online calibration in existing technologies, and improving electrode alignment and battery performance consistency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN GREENSUN TECH CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-06-26
AI Technical Summary
Existing lithium battery electrode thickness measurement devices lack sufficient positioning accuracy in high-speed continuous production, making it impossible to achieve rapid positioning and locking. Furthermore, they lack online calibration functions, resulting in inaccurate electrode alignment and affecting battery performance consistency.
The system employs a combination of mounting base, adjustment components, thickness sensor, and calibration module. It achieves dynamic and precise measurement of electrode thickness through laser displacement sensor and adjustment components, and performs online calibration through calibration module to ensure the accuracy and stability of measurement data.
It improves the accuracy and production efficiency of electrode thickness measurement, solves the problems of positioning error and measurement deviation, ensures the accuracy of electrode alignment, and enhances the consistency of battery production.
Smart Images
Figure CN224416027U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium battery electrode processing technology, specifically to a lithium battery electrode thickness measuring device. Background Technology
[0002] In lithium battery production, the uniformity of electrode thickness directly affects the cell winding quality and tab alignment. For cylindrical lithium-ion batteries with tabs on the same side, variations in electrode thickness can lead to a discrepancy between the theoretical and actual tab spacing after multiple layers of cell winding, resulting in tab alignment exceeding process requirements. This deviation can cause positioning errors in subsequent laser cutting processes, reduce battery performance consistency, and in severe cases, even lead to poor tab welding and other quality problems.
[0003] Currently, the industry generally lacks devices capable of real-time monitoring of electrode thickness changes. Traditional thickness measuring equipment suffers from insufficient positioning accuracy, inability to dynamically adjust the measurement position, and lack of online calibration capabilities. Particularly in high-speed continuous production scenarios, existing technologies struggle to achieve rapid positioning and locking of the measuring device, and the sensor calibration process is cumbersome, severely impacting production efficiency. Furthermore, conventional thickness measuring devices lack structural rigidity, making them prone to displacement deviations during long-term use, further exacerbating measurement errors. Utility Model Content
[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a lithium battery electrode thickness measuring device to monitor the thickness of the electrode in real time, thereby facilitating timely adjustment of the electrode tab spacing and improving the electrode tab alignment after the battery cell is wound.
[0005] The technical solution adopted by this utility model to solve its technical problem is:
[0006] A lithium battery electrode thickness measuring device includes a mounting base, an adjustment component, a thickness sensor, and a calibration module. The adjustment component is disposed on the mounting base, the thickness sensor is used to measure the thickness of the electrode, the calibration module is used to calibrate the measurement data of the thickness sensor, and the adjustment component is used to adjust the position of the thickness sensor.
[0007] The adjustment assembly includes an adjustment plate and a fixing plate. The adjustment plate is slidably connected to the mounting base. The fixing plate is connected to the side of the adjustment plate. The fixing plate is provided with a locking structure for fixing / unlocking the fixing plate and the mounting base. The adjustment plate is provided with a support plate, and the thickness sensor is mounted on the support plate.
[0008] As a further improvement to the above technical solution, the thickness sensor includes two laser displacement sensors arranged opposite each other, with a thickness measurement gap between the two laser displacement sensors for the electrode to pass through, and slots for the electrode to pass through are provided on the support plate, the fixing plate and the mounting base.
[0009] As a further improvement to the above technical solution, the support plate is provided with a first calibration position and a second calibration position. When the calibration module is in use, it is installed at the first calibration position, and when the calibration module is in an unused state, it is installed at the second calibration position.
[0010] As a further improvement to the above technical solution, the support plate is connected to a spare plate, and the second marker is positioned on the spare plate.
[0011] As a further improvement to the above technical solution, the adjustment plate and the mounting base are slidably connected by a guide structure, the length direction of the guide structure being parallel to the width direction of the electrode.
[0012] As a further improvement to the above technical solution, the guide structure includes a guide rail and a slider connected thereto, wherein the guide rail and the slider are respectively disposed on the adjustment plate and the mounting base.
[0013] As a further improvement to the above technical solution, the locking structure includes a locking screw threaded onto the mounting base, a waist-shaped hole provided on the fixing plate, the diameter of the rod portion of the locking screw being smaller than the width of the waist-shaped hole and the rod portion being located inside the waist-shaped hole, and the diameter of the head of the locking screw being larger than the width of the waist-shaped hole, so that when the locking screw is rotated, the inner side of the head can abut against the side wall of the fixing plate.
[0014] As a further improvement to the above technical solution, the head is provided with a knob.
[0015] As a further improvement to the above technical solution, a handle is provided on the adjustment plate.
[0016] As a further improvement to the above technical solution, a limit plate is provided on the adjustment plate, and a buffer is provided on the mounting base. When the adjustment plate moves, the limit plate can abut against the buffer.
[0017] The beneficial effects of this utility model are: by using the mounting base, adjustment components, thickness sensor and calibration module together, accurate measurement and rapid calibration of electrode thickness are achieved, solving the problems of insufficient positioning accuracy, inability to dynamically adjust the measurement position and lack of online calibration function of traditional thickness measuring equipment. It has the advantages of improving measurement accuracy, achieving rapid positioning and locking, simplifying the calibration process and enhancing structural stability. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0019] Figure 1 This is a schematic diagram of the structure of a lithium battery electrode thickness measuring device according to the present invention. Figure 1 ;
[0020] Figure 2 This is an exploded view of the structure of a lithium battery electrode thickness measuring device according to the present invention;
[0021] Figure 3 This is a schematic diagram of the structure of a lithium battery electrode thickness measuring device according to the present invention. Figure 2 .
[0022] Reference numerals: 1. Mounting base; 2. Laser displacement sensor; 3. Adjustment assembly; 31. Adjustment plate; 32. Guide rail; 33. Slider; 34. Fixing plate; 35. Oblong hole; 36. Locking screw; 37. Threaded hole; 38. Support plate; 39. Handle; 4. Calibration module; 5. Electrode; 6. Spare plate; 7. Limiting plate; 8. Buffer; A. Second calibration; B. First calibration. Detailed Implementation
[0023] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct connection of components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. For example, fixed connections / installations can use accessories such as screws and bolts, or can be directly connected by welding, bonding, etc. The various technical features in this utility model can be combined interactively without contradicting each other.
[0024] Reference Figures 1-3This utility model provides a lithium battery electrode thickness measurement device, including a mounting base 1, an adjustment component 3, a thickness sensor, and a calibration module 4. The adjustment component 3 is disposed on the mounting base 1. The thickness sensor is used to measure the thickness of the electrode 5. The thickness sensor includes two laser displacement sensors 2 arranged opposite each other, with a thickness measurement gap between the two laser displacement sensors 2 for the electrode 5 to pass through. The calibration module 4 is used to calibrate the measurement data of the thickness sensor. The adjustment component 3 is used to adjust the position of the thickness sensor. Compared with the prior art, this embodiment achieves dynamic and accurate measurement of the electrode thickness by adjusting the position of the thickness sensor through the adjustment component 3 and combining it with the dual-laser measurement method. Furthermore, the periodic calibration function of the calibration module 4 ensures the long-term reliability of the measurement data, thereby effectively solving the problem of electrode tab alignment caused by inaccurate electrode thickness measurement.
[0025] In this embodiment, the adjustment assembly 3 includes an adjustment plate 31 and a fixing plate 34. The adjustment plate 31 is slidably connected to the mounting base 1. The adjustment plate 31 is provided with a handle 39. The side of the adjustment plate 31 is connected to the fixing plate 34. The fixing plate 34 is provided with a locking structure for fixing / unlocking the fixing plate 34 and the mounting base 1. The adjustment plate 31 is provided with a support plate 38. The laser displacement sensor 2 is mounted on the support plate 38. The support plate 38, the fixing plate 34, and the mounting base 1 are all provided with slots for the electrode 5 to pass through, so as to facilitate the transport of the electrode 5.
[0026] It can be understood that when the position of the laser displacement sensor 2 needs to be adjusted, the fixing relationship between the fixed plate 34 and the mounting base 1 only needs to be unlocked by the locking structure to drive the adjusting plate 31 to move on the mounting base 1, thereby driving the support plate 38 and the laser displacement sensor 2 on the support plate 38 to move. When the position of the laser displacement sensor 2 does not need to be adjusted, the locking structure forms a fixed relationship between the fixed plate 34 and the mounting base 1, thereby preventing the adjustment plate 31 from moving.
[0027] In a specific embodiment, the locking structure includes a locking screw 36, a threaded hole 37 on the mounting base 1, the locking screw 36 being threadedly connected to the threaded hole 37, and a slotted hole 35 on the fixing plate 34. The diameter of the rod portion of the locking screw 36 is smaller than the width of the slotted hole 35, and the rod portion is located within the slotted hole 35. The diameter of the head of the locking screw 36 is larger than the width of the slotted hole 35. When the locking screw 36 is tightened, the inner side of the head can abut against the side wall of the fixing plate 34, thereby forming a fixed relationship between the fixing plate 34 and the mounting base 1. When the locking screw 36 is turned, the inner side of the head can separate from the side wall of the fixing plate 34, thereby driving the fixing plate 34 and the adjusting plate 31 to move. When the fixing plate 34 moves, the locking screw 36 moves within the slotted hole 35 to avoid interference.
[0028] Furthermore, the head is provided with a knob to facilitate the rotation of the locking screw 36.
[0029] In a specific embodiment, the adjusting plate 31 and the mounting base 1 are slidably connected by a guide structure. The length direction of the guide structure is parallel to the width direction of the electrode 5. The guide structure includes a guide rail 32 and a slider 33 connected thereto. The guide rail 32 is disposed on the mounting base 1, and the slider 33 is disposed on the adjusting plate 31. Through the precise cooperation of the guide rail 32 and the slider 33, the directional sliding of the adjusting plate 31 relative to the mounting base 1 is realized. The parallel arrangement of the guide rail 32 and the width direction of the electrode 5 effectively constrains the displacement of the adjusting plate 31 in the non-working direction, which can avoid the shaking problem of traditional sliding connections.
[0030] In some embodiments, the support plate 38 is connected to a spare plate 6. A first calibration position B is provided on the support plate 38, and a second calibration position A is provided on the spare plate 6. The calibration module 4 is installed at the first calibration position B when in use and at the second calibration position A when idle. This dual-calibration physical isolation design clearly separates the working area and storage area of the calibration module 4. When the calibration module 4 is idle, it is transferred to the second calibration position A on the spare plate 6, thereby freeing up the operating space of the main working area of the support plate 38. When calibration is required, the calibration module 4 can quickly return to the first calibration position B to perform the measurement task.
[0031] In some embodiments, a limit plate 7 is provided on the adjusting plate 31, and a buffer 8 is provided on the mounting base 1. When the adjusting plate 31 moves, the limit plate 7 can abut against the buffer 8, which can prevent the adjusting plate 31 from being out of control (such as due to excessive thrust). The cooperation between the limit plate 7 and the buffer 8 can play a buffering role, protecting the adjusting plate 31, the mounting base 1 and related components from damage.
[0032] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
Claims
1. A lithium battery electrode thickness measuring device, characterized in that: The device includes a mounting base, an adjustment assembly, a thickness sensor, and a calibration module. The adjustment assembly is mounted on the mounting base. The thickness sensor is used to measure the thickness of the electrode sheet. The calibration module is used to calibrate the measurement data of the thickness sensor. The adjustment assembly is used to adjust the position of the thickness sensor. The adjustment assembly includes an adjustment plate and a fixing plate. The adjustment plate is slidably connected to the mounting base. The fixing plate is connected to the side of the adjustment plate. The fixing plate is provided with a locking structure for fixing / unlocking the fixing plate and the mounting base. The adjustment plate is provided with a support plate, and the thickness sensor is mounted on the support plate.
2. The thickness measuring device for lithium battery pole piece according to claim 1, characterized in that: The thickness sensor includes two laser displacement sensors arranged opposite each other, with a thickness measurement gap between the two laser displacement sensors for the electrode to pass through. The support plate, the fixing plate, and the mounting base are all provided with slots for the electrode to pass through.
3. The thickness measuring device for lithium battery pole piece according to claim 1, characterized in that: The support plate is provided with a first calibration position and a second calibration position. When the calibration module is in use, it is installed at the first calibration position, and when the calibration module is in an unused state, it is installed at the second calibration position.
4. The thickness measuring device for lithium battery pole piece according to claim 3, characterized in that: The support plate is connected to a spare plate, and the second marker is positioned on the spare plate.
5. The thickness measuring device for lithium battery pole piece according to claim 1, characterized in that: The adjustment plate and the mounting base are slidably connected by a guide structure, the length direction of which is parallel to the width direction of the electrode.
6. The thickness measuring device for lithium battery pole piece according to claim 5, characterized in that: The guide structure includes a guide rail and a slider connected thereto, the guide rail and the slider being respectively disposed on the adjustment plate and the mounting base.
7. The lithium battery electrode thickness measuring device according to claim 1, characterized in that: The locking structure includes a locking screw threaded onto the mounting base. The fixing plate has an oblong hole. The diameter of the rod portion of the locking screw is smaller than the width of the oblong hole, and the rod portion is located inside the oblong hole. The diameter of the head of the locking screw is larger than the width of the oblong hole. When the locking screw is rotated, the inner side of the head can abut against the side wall of the fixing plate.
8. The thickness measuring device for lithium battery pole piece according to claim 7, characterized in that: The head is equipped with a knob.
9. A lithium battery electrode thickness measuring device according to claim 1, characterized in that: The adjustment plate is equipped with a handle.
10. A lithium battery electrode thickness measuring device according to claim 1, characterized in that: A limit plate is provided on the adjustment plate, and a buffer is provided on the mounting base. When the adjustment plate moves, the limit plate can abut against the buffer.