Device for assisting in measuring diameter of battery cell

Abstract

The utility model belongs to the technical field of battery cell production, and particularly relates to an auxiliary device for measuring the diameter of a battery cell, which comprises a base, a support plate fixedly connected to the rear side of the top of the base, and a limiting plate fixedly connected to the two sides of the front side of the support plate, chamfers are formed in the opposite sides of the two limiting plates; the positioning mechanism is located in the inner cavity of the base, and the positioning mechanism is used for fixing a battery cell; the adjusting mechanism is located on the rear side of the supporting plate, and the adjusting mechanism is used for assisting in measuring different positions of the battery cell; and the clamping mechanism is located at the rear side of the adjusting mechanism, and the clamping mechanism is used for positioning the micrometer. According to the utility model, the positioning mechanism, the adjusting mechanism and the clamping mechanism are cooperatively used, so that a worker does not need to frequently adjust and clamp the battery cell, and the accuracy and the efficiency of battery cell measurement are improved.

Description

Technical Field

[0001] This utility model relates to the field of battery cell manufacturing technology, and in particular to a device for assisting in measuring the diameter of battery cells. Background Technology

[0002] Cylindrical cells are battery cells with a cylindrical shape. Their outer shell is generally made of metal materials (such as stainless steel), and the inside contains the core components of the battery, such as positive and negative electrodes, electrolyte, and separator. Cylindrical cells are widely used in various consumer electronics products, power tools, electric vehicles, and other fields. Common cylindrical cell models include 18650 and 21700, where the numbers represent the diameter and length of the cell. For example, the diameter of an 18650 cell is 18 mm and the length is 65 mm. Cylindrical cells are widely used due to their simple structure, mature manufacturing process, low cost, and reliable performance.

[0003] In the production of cylindrical battery cells, accurate measurement of their outer diameter is crucial for quality control and process optimization, and micrometers are typically used for this purpose. However, in practice, when operators hold the battery cell and micrometer, it is difficult to ensure that the battery cell axis is always perfectly perpendicular to the two measuring anvils of the micrometer. Any slight tilt will cause the measured value to be greater than the actual diameter of the battery cell, resulting in measurement error. To solve the perpendicularity problem, existing technologies have developed measuring fixtures that utilize fixed limiting grooves. These fixtures constrain the measuring posture of the micrometer and accommodate one end of the battery cell through their specific structure, effectively ensuring the perpendicular relationship between the battery cell and the measuring surface of the micrometer at the moment of measurement, and significantly improving the accuracy of single-point measurements.

[0004] However, such fixed clamps have obvious limitations. When it is necessary to measure the diameter of the battery cell at different axial positions (such as the positive, middle, and negative terminals), the battery cell must be completely removed from the clamp, its axial position in the clamp must be manually adjusted, and then it must be put back in and positioned. This operation is cumbersome and inefficient. When it is necessary to perform multiple measurements at different angles (such as rotating a certain angle) on the same circumferential cross section of the battery cell to check its roundness, it is also necessary to repeatedly remove, manually rotate, and put back in and position the battery cell. This is not only inefficient, but repeated removal and placement may also introduce new errors due to positioning deviations. It cannot meet the requirements of efficient, multi-position, and multi-angle accurate measurement. Therefore, this utility model proposes an auxiliary device for measuring the diameter of the battery cell to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the significant limitations of fixed clamps. When measuring the diameter of a battery cell at different axial positions (such as the positive, middle, and negative terminals), the battery cell must be completely removed from the clamp, its axial position manually adjusted, and then reinserted and repositioned. This process is cumbersome and inefficient. When multiple measurements are needed at different angles (such as rotating the cell by a certain angle) on the same circumferential cross-section of the battery cell to check its roundness, the cell must also be repeatedly removed, manually rotated, and reinserted. This process is not only inefficient, but repeated removal and placement may also introduce new errors due to positioning deviations. Therefore, this invention proposes an auxiliary device for measuring the diameter of a battery cell.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A device for assisting in measuring the diameter of a battery cell includes a base, a support plate fixedly connected to the rear side of the top of the base, and the device further includes:

[0008] The limiting plate is fixedly connected to both sides of the front side of the support plate, and a chamfer is provided on the opposite side of the two limiting plates.

[0009] A positioning mechanism is located inside the base and is used to fix the battery cell.

[0010] An adjustment mechanism is located on the rear side of the support plate and is used to assist in measuring different positions of the battery cell.

[0011] A clamping mechanism is located behind the adjusting mechanism and is used to position the micrometer.

[0012] As a preferred embodiment of the present invention, the positioning mechanism includes: a positioning box, an L-shaped bracket, a guide wheel, a lifting plate, a pressing frame, a rack, a first tooth, and a first spring;

[0013] An opening is provided on the front side of the base. The positioning box is slidably disposed in the inner cavity of the opening. Both sides of the positioning box, located in the inner cavity of the base, are fixedly connected to an L-shaped bracket. The top of the L-shaped bracket penetrates through the base. Two guide wheels are fixedly installed on the top of the rear side of the L-shaped bracket. The lifting plate is slidably disposed in the inner cavity of the positioning box. The front side of the top of the lifting plate is fixedly connected to a pressing frame. The top of the pressing frame penetrates through the positioning box. The rear side of the top of the lifting plate is fixedly connected to a rack. The top of the rack penetrates through the positioning box. The top of the inner cavity of the base is fixedly connected to a first tooth. There are several first teeth. The bottom of the first teeth meshes with the rack. The front and rear sides of the bottom of the lifting plate are fixedly connected to a first spring. The end of the first spring away from the lifting plate is fixedly connected to the inner wall of the positioning box.

[0014] As a preferred embodiment of the present invention, the adjustment mechanism includes: a guide plate, an adjustment box, a pressure rod, a second spring, a connecting plate, a vertical plate, a second tooth, and a third tooth;

[0015] The rear side of the support plate is fixedly connected to the guide plate, and the rear side of the guide plate is slidably connected to the adjustment box. A limit port is opened on the top of the adjustment box, and the inner cavity of the limit port is slidably connected to the pressure rod. The bottom of the pressure rod is fixedly connected to the second spring, and the bottom of the second spring is fixedly connected to the inner wall of the adjustment box. Both sides of the pressure rod are fixedly connected to the connecting plate. The end of the connecting plate away from the pressure rod is fixedly connected to the vertical plate. The top and bottom of the vertical plate are slidably connected to the inner wall of the adjustment box. There are two vertical plates. The front side of the vertical plate passes through the adjustment box. The front side of the opposite side of the two vertical plates is fixedly connected to the second tooth. There are several second teeth. Both sides of the guide plate are fixedly connected to the third tooth. There are several third teeth. The second teeth mesh with the first teeth.

[0016] As a preferred embodiment of this utility model, the clamping mechanism includes: a top plate, a threaded rod, a knob, a pressure plate, a bottom plate, a contact plate, and an anti-detachment plate;

[0017] The top of the rear side of the adjustment box is fixedly connected to the top plate. A threaded hole is opened on the left side of the top of the top plate. The inner cavity of the threaded hole is threadedly connected to the surface of the threaded rod. The top of the threaded rod is fixedly connected to the knob. The top of the threaded rod is fixedly connected to the pressure plate. The bottom of the rear side of the adjustment box is fixedly connected to the bottom plate. The side of the top plate and the bottom plate adjacent to each other are slidably connected to the contact plate. The two sides of the opposite side of the two contact plates are fixedly connected to the anti-detachment plate.

[0018] As a preferred embodiment of this utility model, a sliding hole is provided at the bottom of the front side of the L-shaped bracket, and a limit rod is slidably connected to the inner cavity of the sliding hole. The front and rear sides of the limit rod are fixedly connected to the inner wall of the base.

[0019] As a preferred embodiment of this utility model, positioning openings are provided on both sides of the front top of the positioning box, and the positioning openings are adapted to the L-shaped bracket.

[0020] As a preferred embodiment of this utility model, a positioning rod is fixedly connected to the right side of the top of the pressure plate, and the top of the positioning rod penetrates through the top plate. Beneficial effects

[0021] When measuring the battery cell, the battery cell is placed on the base. Then, the operator presses the pressing frame to drive the lifting plate to move down, causing the rack to disengage from the first tooth. Then, the positioning box is pushed towards the battery cell. As the positioning box moves, it drives the L-shaped bracket and guide wheel to contact the battery cell until the battery cell contacts the limit plate. After releasing the pressing frame, the first spring pushes the rack to reset and engage with the first tooth to lock, thus achieving rapid positioning of the battery cell. Furthermore, since the guide wheel is used to contact the battery cell, when it is necessary to rotate the battery cell for measurement, it is not necessary to contact the positioning state of the battery cell to perform the measurement.

[0022] Place the micrometer's inner cavity between the two anti-detachment plates on opposite sides. Then, the operator rotates the knob to drive the threaded rod to press down the pressure plate and the contact plate. When the contact plate moves, it can fix the micrometer and quickly clamp it.

[0023] The downward pressure rod drives the connecting plate to move, and then the connecting plate drives the two vertical plates to move away from each other. When the vertical plates move, they drive the second tooth to disengage from the third tooth. At this time, the height of the micrometer can be adjusted to facilitate the measurement of different positions of the battery cell. This eliminates the need for workers to frequently adjust and clamp the battery cell, thus improving the accuracy and efficiency of battery cell measurement.

[0024] In this invention, the coordinated use of the positioning mechanism, adjustment mechanism, and clamping mechanism eliminates the need for frequent adjustments and clamping of the battery cells by workers, thereby improving the accuracy and efficiency of battery cell measurement. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a demonstration diagram of the battery cell and micrometer measurement of this utility model;

[0027] Figure 3 This is a cross-sectional view of the base and positioning box of this utility model;

[0028] Figure 4 This is a rear view of the structure of this utility model;

[0029] Figure 5 This is a cross-sectional view of the adjustment box of this utility model.

[0030] In the diagram: 1. Base; 2. Support plate; 3. Positioning box; 4. L-shaped bracket; 5. Guide wheel; 6. Lifting plate; 7. Pressing frame; 8. Rack; 9. First tooth; 10. First spring; 11. Guide plate; 12. Adjustment box; 13. Pressure rod; 14. Second spring; 15. Connecting plate; 16. Vertical plate; 17. Second tooth; 18. Third tooth; 19. Top plate; 20. Threaded rod; 21. Knob; 22. Pressure plate; 23. Base plate; 24. Contact plate; 25. Anti-detachment plate; 26. Limiting rod; 27. Positioning rod; 28. Limiting plate. Detailed Implementation

[0031] 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

[0032] Reference Figures 1-5A device for assisting in measuring the diameter of a battery cell includes a base 1, a support plate 2 fixedly connected to the rear side of the top of the base 1, and the device further includes:

[0033] The limiting plate 28 and the two sides of the front side of the support plate 2 are fixedly connected to the limiting plate 28, and the opposite side of the two limiting plates 28 are provided with chamfers.

[0034] The positioning mechanism is located in the inner cavity of the base 1 and is used to fix the battery cell.

[0035] The adjustment mechanism is located on the rear side of the support plate 2. The adjustment mechanism is used to assist in measuring different positions of the battery cell.

[0036] The clamping mechanism is located behind the adjusting mechanism and is used to position the micrometer.

[0037] To achieve rapid positioning of the battery cell, the positioning mechanism includes: positioning box 3, L-shaped bracket 4, guide wheel 5, lifting plate 6, pressing frame 7, rack 8, first tooth 9 and first spring 10;

[0038] An opening is provided on the front side of the base 1. The positioning box 3 is slidably disposed within the cavity of the opening. Both sides of the positioning box 3, located within the cavity of the base 1, are fixedly connected to the L-shaped bracket 4. The top of the L-shaped bracket 4 penetrates through the base 1. Two guide wheels 5 are fixedly installed on the top of the rear side of the L-shaped bracket 4. A lifting plate 6 is slidably disposed within the cavity of the positioning box 3. The front side of the top of the lifting plate 6 is fixedly connected to the pressing frame 7. The top of the pressing frame 7 penetrates through the positioning box 3. The rear side of the top of the lifting plate 6 is fixedly connected to the rack 8. The top of the rack 8... The positioning box 3 is penetrated by the base 1. The top of the inner cavity of the base 1 is fixedly connected to the first tooth 9. There are several first teeth 9. The bottom of the first tooth 9 meshes with the rack 8. The front and rear sides of the bottom of the lifting plate 6 are fixedly connected to the first spring 10. The end of the first spring 10 away from the lifting plate 6 is fixedly connected to the inner wall of the positioning box 3. This achieves the effect of rapid positioning of the battery cell. Since the guide wheel 5 is used to abut against the battery cell, when the battery cell needs to be rotated for measurement, it is not necessary to contact the positioning state of the battery cell to perform the measurement.

[0039] In order to quickly clamp the micrometer, the adjustment mechanism includes: guide plate 11, adjustment box 12, pressure rod 13, second spring 14, connecting plate 15, vertical plate 16, second tooth 17 and third tooth 18.

[0040] The rear side of the support plate 2 is fixedly connected to the guide plate 11, and the rear side of the guide plate 11 is slidably connected to the adjustment box 12. The top of the adjustment box 12 has a limit opening, and the inner cavity of the limit opening is slidably connected to the pressure rod 13. The bottom of the pressure rod 13 is fixedly connected to the second spring 14, and the bottom of the second spring 14 is fixedly connected to the inner wall of the adjustment box 12. Both sides of the pressure rod 13 are fixedly connected to the connecting plate 15. The end of the connecting plate 15 away from the pressure rod 13 is fixedly connected to the vertical plate 16. The top and bottom of the vertical plate 16 are slidably connected to the inner wall of the adjustment box 12. There are two vertical plates 16. The front side of the vertical plate 16 passes through the adjustment box 12. The front side of the opposite side of the two vertical plates 16 is fixedly connected to the second tooth 17. There are several second teeth 17. Both sides of the guide plate 11 are fixedly connected to the third tooth 18. There are several third teeth 18. The second tooth 17 meshes with the first tooth 9, thereby achieving the purpose of quickly clamping the micrometer.

[0041] To facilitate measurement at different positions of the battery cell, the clamping mechanism includes: a top plate 19, a threaded rod 20, a knob 21, a pressure plate 22, a bottom plate 23, a contact plate 24, and an anti-detachment plate 25;

[0042] The top of the rear side of the adjustment box 12 is fixedly connected to the top plate 19. A threaded hole is provided on the left side of the top of the top plate 19. The inner cavity of the threaded hole is threadedly connected to the surface of the threaded rod 20. The top of the threaded rod 20 is fixedly connected to the knob 21. The top of the threaded rod 20 is fixedly connected to the pressure plate 22. The bottom of the rear side of the adjustment box 12 is fixedly connected to the bottom plate 23. The side of the top plate 19 adjacent to the bottom plate 23 is slidably connected to the contact plate 24. Both sides of the opposite side of the two contact plates 24 are fixedly connected to the anti-detachment plate 25, thereby achieving the effect of measuring different positions of the battery cell.

[0043] To improve the stability of the L-shaped bracket 4 during movement, a sliding hole is provided at the bottom of the front side of the L-shaped bracket 4. A limit rod 26 is slidably connected to the inner cavity of the sliding hole. The front and rear sides of the limit rod 26 are fixedly connected to the inner wall of the base 1, thereby achieving the effect of improving the stability of the L-shaped bracket 4 during movement.

[0044] To facilitate the movement of the L-shaped bracket 4, positioning openings are provided on both sides of the front top of the positioning box 3. The positioning openings are adapted to the L-shaped bracket 4, thereby achieving the effect of facilitating the movement of the L-shaped bracket 4.

[0045] In order to limit the movement path of the pressure plate 22, a positioning rod 27 is fixedly connected to the right side of the top of the pressure plate 22. The top of the positioning rod 27 passes through the top plate 19, thereby achieving the purpose of limiting the movement path of the pressure plate 22.

[0046] The working principle of this utility model is as follows: When measuring a battery cell, the battery cell is placed on the base 1. Then, the operator presses the pressing frame 7 to drive the lifting plate 6 to move downwards, causing the rack 8 to disengage from the first tooth 9. Then, the positioning box 3 is pushed towards the battery cell. When the positioning box 3 moves, it drives the L-shaped bracket 4 and the guide wheel 5 to contact the battery cell until the battery cell contacts the limiting plate 28. After releasing the pressing frame 7, the first spring 10 pushes the lifting plate 6 and the rack 8 to reset and engage with the first tooth 9 to lock, thus achieving rapid positioning of the battery cell. Then, the micrometer inner cavity is placed between the two anti-disengagement plates 25 on opposite sides. Subsequently, the operator rotates the knob 21 to drive the threaded rod 20 to move the pressure plate 22 and the contact plate 24 downwards. When the contact plate 24 moves, it can... To fix the micrometer, when it is necessary to measure different positions of the battery cell, the pressure rod 13 can be pressed down to move the connecting plate 15. Then the connecting plate 15 moves the two vertical plates 16 away from each other. When the vertical plates 16 move, they cause the second tooth 17 to disengage from the third tooth 18. At this time, the height of the adjustment box 12 can be moved and the measuring position of the micrometer can be adjusted, which facilitates the measurement of different positions of the battery cell. This eliminates the need for workers to frequently adjust and clamp the battery cell, improving the accuracy and efficiency of battery cell measurement. It should be noted that since the micrometer screw is movable, the sliding setting of the contact plate 24 is so that the micrometer anvil contacts the battery cell first, and then the operator operates the micrometer screw to contact the battery cell.

[0047] 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 device for assisting in measuring the diameter of a battery cell, comprising a base (1), wherein a support plate (2) is fixedly connected to the rear side of the top of the base (1), characterized in that, The device for assisting in measuring the diameter of battery cells also includes: Limiting plate (28), both sides of the front side of the support plate (2) are fixedly connected to the limiting plate (28), and chamfers are provided on the opposite side of the two limiting plates (28); A positioning mechanism is located in the inner cavity of the base (1) and is used to fix the battery cell. An adjustment mechanism is located on the rear side of the support plate (2). The adjustment mechanism is used to assist in measuring different positions of the battery cell. A clamping mechanism is located behind the adjusting mechanism and is used to position the micrometer.

2. The device for auxiliary measurement of battery cell diameter according to claim 1, characterized in that, The positioning mechanism includes: a positioning box (3), an L-shaped bracket (4), a guide wheel (5), a lifting plate (6), a pressing frame (7), a rack (8), a first tooth (9), and a first spring (10); An opening is provided on the front side of the base (1). The positioning box (3) is slidably disposed in the inner cavity of the opening. Both sides of the positioning box (3) and located in the inner cavity of the base (1) are fixedly connected to the L-shaped bracket (4). The top of the L-shaped bracket (4) penetrates through the base (1). Two guide wheels (5) are fixedly installed on the top of the rear side of the L-shaped bracket (4). The lifting plate (6) is slidably disposed in the inner cavity of the positioning box (3). The front side of the top of the lifting plate (6) is fixedly connected to the pressing frame (7). The top of the positioning box (3) is fixedly connected to the rear side of the top of the lifting plate (6) and the rack (8). The top of the rack (8) is fixedly connected to the positioning box (3). The top of the inner cavity of the base (1) is fixedly connected to the first tooth (9). There are several first teeth (9). The bottom of the first tooth (9) is engaged with the rack (8). The front and rear sides of the bottom of the lifting plate (6) are fixedly connected to the first spring (10). The end of the first spring (10) away from the lifting plate (6) is fixedly connected to the inner wall of the positioning box (3).

3. The device for auxiliary measurement of battery cell diameter according to claim 1, characterized in that, The adjustment mechanism includes: a guide plate (11), an adjustment box (12), a pressure rod (13), a second spring (14), a connecting plate (15), a vertical plate (16), a second tooth (17), and a third tooth (18). The rear side of the support plate (2) is fixedly connected to the guide plate (11), and the rear side of the guide plate (11) is slidably connected to the adjustment box (12). A limit port is opened on the top of the adjustment box (12), and the inner cavity of the limit port is slidably connected to the pressure rod (13). The bottom of the pressure rod (13) is fixedly connected to the second spring (14), and the bottom of the second spring (14) is fixedly connected to the inner wall of the adjustment box (12). Both sides of the pressure rod (13) are fixedly connected to the connecting plate (15). The end of the connecting plate (15) away from the pressure rod (13) is connected to the vertical plate ( 16) Fixed connection, the top and bottom of the vertical plate (16) are slidably connected to the inner wall of the adjustment box (12), there are two vertical plates (16), the front side of the vertical plate (16) passes through the adjustment box (12), the front side of the opposite side of the two vertical plates (16) is fixedly connected to the second tooth (17), there are several second teeth (17), both sides of the guide plate (11) are fixedly connected to the third tooth (18), there are several third teeth (18), the second tooth (17) meshes with the first tooth (9).

4. The device for auxiliary measurement of battery cell diameter according to claim 1, characterized in that, The clamping mechanism includes: a top plate (19), a threaded rod (20), a knob (21), a pressure plate (22), a bottom plate (23), a contact plate (24), and an anti-detachment plate (25). The top of the rear side of the adjustment box (12) is fixedly connected to the top plate (19). A threaded hole is provided on the left side of the top of the top plate (19). The inner cavity of the threaded hole is threadedly connected to the surface of the threaded rod (20). The top of the threaded rod (20) is fixedly connected to the knob (21). The top of the threaded rod (20) is fixedly connected to the pressure plate (22). The bottom of the rear side of the adjustment box (12) is fixedly connected to the bottom plate (23). The side of the top plate (19) and the bottom plate (23) adjacent to each other are slidably connected to the contact plate (24). The two sides of the opposite side of the two contact plates (24) are fixedly connected to the anti-detachment plate (25).

5. The device for auxiliary measurement of battery cell diameter according to claim 2, characterized in that, The bottom of the front side of the L-shaped bracket (4) has a sliding hole, and the inner cavity of the sliding hole is slidably connected to the limit rod (26). The front and rear sides of the limit rod (26) are fixedly connected to the inner wall of the base (1).

6. The device for auxiliary measurement of battery cell diameter according to claim 2, characterized in that, Positioning openings are provided on both sides of the front top of the positioning box (3), and the positioning openings are compatible with the L-shaped bracket (4).

7. The device for auxiliary measurement of battery cell diameter according to claim 4, characterized in that, A positioning rod (27) is fixedly connected to the right side of the top of the pressure plate (22), and the top of the positioning rod (27) penetrates through the top plate (19).

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