A kind of displacement indirect conduction based battery cell thickness measuring device

Abstract

The utility model relates to a kind of battery cell thickness measuring device based on displacement indirect conduction, including rack, and at least one thickness measuring unit being located on rack, each the thickness measuring unit includes: bearing plate, for bearing to be tested battery cell;Lifting assembly, including compression part and driving part, the output end of the driving part is connected to the compression part, for driving the compression part moves along vertical direction;And detection component, including connecting arm, press bar and thickness gauge, the connecting arm is connected to the compression part, the press bar is vertically arranged in the connecting arm, the lower end of the press bar is formed with the thickness gauge opposite and is resisted to hold end, the press bar is configured as can be moved relative to connecting arm along axial direction, to adjust the extension amount of the resisted to hold end.The utility model can reduce measurement error, avoid thickness gauge loss, and adjustment is convenient, and different thickness battery cell can be adapted.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing, and more specifically, to a cell thickness measurement device based on displacement indirect conduction. Background Technology

[0002] In battery manufacturing, cell thickness needs to be measured to ensure product quality and process stability. Traditional cell thickness measurement devices typically connect the test end of a thickness gauge (such as a dial indicator) directly to the pressure plate, causing the thickness gauge to rise and fall synchronously with the pressure plate. However, due to mechanical clearances or assembly errors, the pressure plate may tilt or swing during the rising and falling process, causing measurement data deviations. Furthermore, the frequent movement of the thickness gauge with the pressure plate over a long period of time can accelerate its mechanical wear, leading to decreased accuracy and requiring frequent calibration or replacement. In addition, for cells of different thicknesses, traditional devices require overall adjustment of the pressure plate or thickness gauge position to adapt, which is cumbersome and makes it difficult to ensure consistent adjustment. Utility Model Content

[0003] The purpose of this invention is to provide a cell thickness measurement device based on displacement indirect conduction. It has a reasonable structure, can reduce measurement errors, avoid wear and tear on the thickness gauge, and is easy to adjust, and can be adapted to cells of different thicknesses.

[0004] A cell thickness measurement device based on displacement indirect conduction includes a frame and at least one thickness measurement unit disposed on the frame. Each thickness measurement unit includes: a support plate for supporting the cell to be tested; a lifting assembly including a clamping member and a driving member, the output end of the driving member being connected to the clamping member for driving the clamping member to move vertically; and a detection assembly including a connecting arm, a pressure rod, and a thickness gauge. The connecting arm is connected to the clamping member, the pressure rod is vertically inserted through the connecting arm, and the lower end of the pressure rod is formed as a supporting end opposite to the thickness gauge. The pressure rod is configured to be axially movable relative to the connecting arm to adjust the extension amount of the supporting end.

[0005] In the above technical solution, the movement paths of the thickness gauge and the clamping component are separated, and the thickness is indirectly transmitted through the pressure rod, thereby avoiding measurement errors caused by the tilting or swaying of the clamping component. The supporting end of the pressure rod is set opposite to the thickness gauge, and it only abuts against the thickness gauge during the descent process. After rising to a certain height, it separates from the thickness gauge, avoiding the thickness gauge directly bearing the vibration and skew force of the clamping component's lifting and lowering. At the same time, it reduces the extension stroke of the thickness gauge, thereby reducing the mechanical wear of the thickness gauge and ensuring testing accuracy and service life. The pressure rod can be adjusted axially, and the extension amount of the pressure rod can be adjusted alone to adapt to cells of different thicknesses, simplifying operation and improving the applicability of the testing device.

[0006] Furthermore, one end of the connecting arm is connected to the clamping member, and the other end extends horizontally outward to form a clamping part for fixing the pressure rod.

[0007] In the above technical solution, the clamping component and the pressure rod are connected by a connecting arm. The connecting arm extends horizontally outward, allowing the pressure rod to move vertically with the clamping component and be fixed at the position corresponding to the thickness gauge, which facilitates the overall layout of the device.

[0008] Furthermore, the clamping part includes clamping plates disposed opposite each other and adjusting bolts passing through the clamping plates.

[0009] In the above technical solution, the adjusting bolt and the clamping plate cooperate to realize the rapid fine adjustment and reliable fixation of the pressure rod, simplifying the operation and ensuring the positional stability of the pressure rod after adjustment.

[0010] Furthermore, the clamping member includes a sliding seat and a pressure plate, the pressure plate being disposed on the lower end face of the sliding seat and being vertically opposite to the bearing plate.

[0011] In the above technical solution, the pressure plate can abut against the surface of the battery cell to measure the thickness of the battery cell. By setting a sliding seat, the smoothness of the lifting and lowering action can be ensured.

[0012] Furthermore, the frame is provided with a guide rail extending in a vertical direction, and the sliding seat is slidably connected to the guide rail.

[0013] In the above technical solution, the guide rail can constrain the movement trajectory of the slide block, ensuring that the slide block moves in the vertical direction and avoiding errors caused by offset or shaking.

[0014] Furthermore, the thickness measuring unit also includes a counterweight assembly, which is connected to the clamping member.

[0015] In the above technical solution, the counterweight component can balance the downward pressure of the clamping component, reduce the load on the driving component, and extend the service life of the device.

[0016] Furthermore, the counterweight assembly includes a counterweight and a pulley system, the pulley system is disposed on the frame, and the counterweight is connected to the clamping member via a cable wound around the pulley system.

[0017] In the above technical solution, the pulley block and cable work together to achieve a flexible connection between the counterweight and the clamping component, which can reduce friction between moving parts.

[0018] Furthermore, the counterweight includes a support block and several weights detachably disposed on the support block.

[0019] In the above technical solution, the counterweight can be dynamically adjusted by using weights, thereby changing the pressure on the battery cell and improving the compatibility of the device with different testing requirements.

[0020] Furthermore, the frame is provided with a sensor near the support plate to sense the position of the battery cell.

[0021] In the above technical solution, the setting of the sensing element can determine the placement status of the battery cell, ensure the timing matching of the driving element's operation, and avoid false tests caused by the battery cell not being fully in place.

[0022] Furthermore, there are two thickness measuring units, which are arranged adjacent to each other, and the detection components of the two thickness measuring units are arranged in a mirror image on both sides of the frame.

[0023] In the above technical solution, the dual thickness measurement unit can achieve synchronous detection, optimize space utilization, and improve detection efficiency.

[0024] Compared with existing technologies, the advantages of this invention are: the movement paths of the thickness gauge and the clamping component are separated, and the thickness is indirectly transmitted through the pressure rod, thereby avoiding measurement errors caused by the tilting or swaying of the clamping component. The supporting end of the pressure rod is positioned opposite to the thickness gauge, only contacting it during descent and separating after reaching a certain height. This avoids the thickness gauge directly bearing the vibration and skew force of the clamping component's lifting and lowering, while also reducing the extension stroke of the thickness gauge, thus reducing mechanical wear and ensuring testing accuracy and service life. The pressure rod is axially adjustable; adjusting the extension amount of the pressure rod alone allows for adaptation to different thickness cells, simplifying operation and improving the applicability of the testing device. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the cell thickness measurement device based on displacement indirect conduction according to an embodiment of the present invention.

[0026] Figure 2 This is a front view of the cell thickness measurement device based on displacement indirect conduction according to an embodiment of this utility model.

[0027] Figure 3 This is a schematic diagram of the detection component according to an embodiment of the present invention.

[0028] Explanation of icon numbers:

[0029] Frame 1, guide rail 11, sensing element 12, thickness measuring unit 2, bearing plate 21, lifting assembly 22, clamping element 221, sliding seat 2211, pressure plate 2212, driving element 222, detection assembly 23, connecting arm 231, clamping part 2311, clamping plate 2312, adjusting bolt 2313, pressure rod 232, thickness gauge 233, counterweight assembly 24, counterweight 241, bearing block 2411, weight 2412, pulley block 242. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] Please refer to Figures 1 to 3 In a preferred embodiment, the cell thickness measurement device based on displacement indirect conduction of this utility model mainly includes a frame 1 and at least one thickness measurement unit 2 disposed on the frame 1. Each thickness measurement unit 2 includes a support plate 21, a lifting assembly 22, and a detection assembly 23. The support plate 21 is used to support the cell to be tested. The lifting assembly 22 includes a clamping member 221 and a driving member 222. The output end of the driving member 222 is connected to the clamping member 221 and is used to drive the clamping member 221 to move vertically. The detection assembly 23 includes a connecting arm 231, a pressure rod 232, and a thickness gauge 233. The connecting arm 231 is connected to the clamping member 221. The pressure rod 232 is vertically inserted through the connecting arm 231. The lower end of the pressure rod 232 forms a supporting end opposite to the thickness gauge 233. The pressure rod 232 is configured to move axially relative to the connecting arm 231 to adjust the extension amount of the supporting end.

[0033] For example, a support plate 21 is mounted on a frame 1, and a clamping member 221 is vertically opposite to the support plate 21. The clamping member 221 can move vertically to clamp the battery cell placed on the support plate 21 to measure its thickness. A drive member 222 can be an existing linear drive device, such as a linear cylinder, which is fixedly mounted on the upper end of the frame 1. The output end of the drive member 222 is connected to the clamping member 221, thereby driving the clamping member 221 to reciprocate. A thickness gauge 233 can be an existing measuring instrument, such as a dial indicator, and is fixedly mounted on the frame 1. One end of a connecting arm 231 is connected to the clamping member 221, and the other end extends horizontally above the thickness gauge 233. The axial direction of a pressure rod 232 is parallel to the vertical direction. The pressure rod 232 passes through the connecting arm 231, and its abutting end is vertically opposite to the thickness gauge 233.

[0034] During the specific testing, with no battery cell placed on the support plate 21, the drive component 222 drives the clamping component 221 to descend. The clamping component 221 drives the pressure rod 232 to descend via the connecting arm 231. The holding end of the pressure rod 232 abuts against the detection end of the thickness gauge 233. When the clamping component 221 abuts against the support plate 21, the thickness gauge 233 reads the standard value. Then, the battery cell is placed on the support plate 21, and the above action is repeated. When the clamping component 221 abuts against the upper surface of the battery cell, the thickness gauge 233 reads the measured value. The thickness of the battery cell is obtained by subtracting the measured value from the standard value.

[0035] As can be seen from the above technical solution, the movement paths of the thickness gauge 233 and the clamping member 221 are separated, and the thickness is indirectly transmitted through the pressure rod 232, thereby avoiding measurement errors caused by the tilting or swaying of the clamping member 221. The abutting end of the pressure rod 232 is set opposite to the thickness gauge 233, and it only abuts against the thickness gauge 233 during the descent process. After rising to a certain height, it separates from the thickness gauge 233, avoiding the thickness gauge 233 directly bearing the vibration and skew force of the clamping member 221 during its rise and fall. At the same time, it reduces the extension stroke of the thickness gauge 233, thereby reducing the mechanical wear of the thickness gauge 233 and ensuring testing accuracy and service life. The pressure rod 232 can be adjusted axially, and the extension amount of the pressure rod 232 can be adjusted alone to adapt to cells of different thicknesses, simplifying operation and improving the applicability of the testing device.

[0036] In this embodiment, one end of the connecting arm 231 is connected to the clamping member 221, and the other end extends horizontally outward to form a clamping part 2311 for fixing the pressure rod 232. The connecting arm 231 connects the clamping member 221 and the pressure rod 232. The horizontal outward extension of the connecting arm 231 allows the pressure rod 232 to move vertically with the clamping member 221, while being fixed at the position corresponding to the thickness gauge 233, which facilitates the overall layout of the device.

[0037] The clamping part 2311 includes clamping plates 2312 arranged opposite each other and adjusting bolts 2313 passing through the clamping plates 2312. For example, there are two clamping plates 2312 arranged opposite each other. The adjusting bolts 2313 pass through the two clamping plates 2312 from one side and are threadedly connected to a nut on the other side. By turning the adjusting bolts 2313, the distance between the two clamping plates 2312 can be adjusted, thereby adjusting the tightness of the clamping of the pressure rod 232. Through the cooperation of the adjusting bolts 2313 and the clamping plates 2312, rapid fine-tuning and reliable fixing of the pressure rod 232 are achieved, simplifying the operation and ensuring the positional stability of the pressure rod 232 after adjustment.

[0038] The clamping component 221 includes a sliding seat 2211 and a pressure plate 2212. The pressure plate 2212 is disposed on the lower end face of the sliding seat 2211 and is vertically opposite to the bearing plate 21. The pressure plate 2212 can abut against the surface of the battery cell to realize the measurement of the battery cell thickness. By setting the sliding seat 2211, the smoothness of the lifting action can be ensured.

[0039] In this embodiment, the frame 1 is provided with a guide rail 11 extending in the vertical direction, and the sliding seat 2211 is slidably connected to the guide rail 11. The guide rail 11 can constrain the movement trajectory of the sliding seat 2211, ensuring that the sliding seat 2211 moves in the vertical direction and avoiding errors caused by offset or shaking.

[0040] The thickness measuring unit 2 also includes a counterweight assembly 24, which is connected to the clamping member 221. The counterweight assembly 24 can balance the downward pressure of the clamping member 221, reduce the load on the drive member 222, and extend the service life of the device.

[0041] Specifically, the counterweight assembly 24 includes a counterweight 241 and a pulley block 242. The pulley block 242 is mounted on the frame 1, and the counterweight 241 is connected to the clamping member 221 via a cable wound around the pulley block 242. For example, the pulley block 242 includes two pulleys, which are adjacent to each other at the upper end of the frame 1. The cable is wound around the two pulleys, and its two ends are connected to the clamping member 221 and the counterweight 241, respectively. The pulley block 242 and the cable work together to achieve a flexible connection between the counterweight 241 and the clamping member 221, reducing friction between moving parts.

[0042] In this embodiment, the counterweight 241 includes a support block 2411 and several weights 2412 detachably disposed on the support block 2411. The counterweights can be dynamically adjusted by means of the weights 2412, thereby changing the pressure on the battery cell and improving the compatibility of the device with different testing requirements.

[0043] The frame 1 is equipped with a sensor 12 near the support plate 21 to detect the positioning status of the battery cell. The sensor 12 can be an existing sensor, such as an infrared sensor or a photoelectric sensor. The placement status of the battery cell can be determined by the setting of the sensor 12, ensuring the timing matching of the operation of the drive unit 222 and avoiding false detections caused by the battery cell not being fully positioned.

[0044] In this embodiment, there are two thickness measuring units 2, which are arranged adjacent to each other, and the detection components 23 of the two thickness measuring units 2 are arranged in a mirror image on both sides of the frame 1. The dual thickness measuring units 2 can achieve synchronous detection, optimize space utilization, and improve detection efficiency.

[0045] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cell thickness measurement device based on displacement indirect conduction, characterized in that, The device includes a frame (1) and at least one thickness measuring unit (2) disposed on the frame (1), each of the thickness measuring units (2) comprising: The carrier plate (21) is used to support the battery cell to be tested; The lifting assembly (22) includes a clamping member (221) and a driving member (222), the output end of which is connected to the clamping member (221) for driving the clamping member (221) to move vertically; and The detection assembly (23) includes a connecting arm (231), a pressure rod (232), and a thickness gauge (233). The connecting arm (231) is connected to the clamping member (221). The pressure rod (232) is vertically inserted through the connecting arm (231). The lower end of the pressure rod (232) is formed as a supporting end opposite to the thickness gauge (233). The pressure rod (232) is configured to be axially movable relative to the connecting arm (231) to adjust the extension amount of the supporting end.

2. The cell thickness measurement device based on displacement indirect conduction according to claim 1, characterized in that, One end of the connecting arm (231) is connected to the clamping member (221), and the other end extends horizontally outward to form a clamping part (2311) for fixing the pressure rod (232).

3. The cell thickness measurement device based on displacement indirect conduction according to claim 2, characterized in that, The clamping part (2311) includes a clamping plate (2312) disposed opposite to each other, and an adjusting bolt (2313) passing through the clamping plate (2312).

4. The cell thickness measurement device based on displacement indirect conduction according to claim 1, characterized in that, The clamping member (221) includes a sliding seat (2211) and a pressure plate (2212). The pressure plate (2212) is located on the lower end face of the sliding seat (2211) and is vertically opposite to the bearing plate (21).

5. The cell thickness measurement device based on displacement indirect conduction according to claim 4, characterized in that, The frame (1) is provided with a guide rail (11) extending in the vertical direction, and the sliding seat (2211) is slidably connected to the guide rail (11).

6. The cell thickness measurement device based on displacement indirect conduction according to claim 1, characterized in that, The thickness measuring unit (2) also includes a counterweight assembly (24), which is connected to the clamping member (221).

7. The cell thickness measurement device based on displacement indirect conduction according to claim 6, characterized in that, The counterweight assembly (24) includes a counterweight (241) and a pulley block (242). The pulley block (242) is located on the frame (1). The counterweight (241) is connected to the clamping member (221) via a cable wound around the pulley block (242).

8. The cell thickness measurement device based on displacement indirect conduction according to claim 7, characterized in that, The counterweight (241) includes a support block (2411) and several weights (2412) that are detachably disposed on the support block (2411).

9. The cell thickness measurement device based on displacement indirect conduction according to claim 1, characterized in that, The frame (1) is provided with a sensor (12) near the support plate (21) for sensing the position of the battery cell.

10. The cell thickness measurement device based on displacement indirect conduction according to claim 1, characterized in that, There are two thickness measuring units (2), which are arranged adjacent to each other, and the detection components (23) of the two thickness measuring units (2) are arranged in a mirror image on both sides of the frame (1).

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