Device for detecting inventory battery cells and charging and discharging

By integrating scissor-type electric telescopic racks and clamping devices onto the shelves, the cells can be instantly detected and charged/discharged on the shelves, solving the problems of cell damage during transport and cumbersome operation, and improving efficiency and safety.

CN121044206APending Publication Date: 2025-12-02中汽新能(滁州)电池科技有限公司
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Patent Information

Application Number
CN202511223244.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-29
Publication Date
2025-12-02

AI Technical Summary

Technical Problem

The existing finished product warehouse shelves do not have the conditions for secondary rework operations, which leads to the risk of damage to the battery cells during transportation, and the testing and charging/discharging operations are cumbersome.

Method used

A device for detecting and charging/discharging battery cells in stock was designed. It adopts a scissor-type electric telescopic rack and clamping device. Through the coordinated work of the moving plate, mounting plate, charging probe and clamping plate, the battery cells can be detected and charged/discharged on the shelf in real time, avoiding repeated transfers.

Benefits of technology

It improves the efficiency of cell testing and charging, reduces the risk of cell damage during transportation, saves space, and simplifies the operation process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a device for detecting inventory battery cells and charging and discharging, and relates to the technical field of battery cell storage. The device comprises mounting plates, and each mounting plate is fixedly provided with two charging probes used for detecting and charging a battery cell finished product; rotating balls are further included, clamping plates are arranged on one sides of the rotating balls, and moving blocks are slidably arranged on one sides of the mounting plates; each moving plate can be controlled to move synchronously through a scissors fork type electric telescopic frame, space occupation can be avoided when the device is not used, a mounting plate is driven to rotate through a pull plate, so that a charging probe is aligned with the positive and negative electrodes of a battery cell finished product, and meanwhile, a straight toothed plate can be driven to move through a second pull rope when the pull plate moves; and meanwhile, the clamping plate is driven to rotate to clamp and fix the battery cell finished product, so that virtual connection between the charging probe and the positive electrode and the negative electrode of the battery cell finished product is effectively prevented, the battery cell finished product does not need to be repeatedly transferred, the detection and charging efficiency is improved, and damage to the battery cell finished product caused by transferring is reduced.
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Description

Technical Field

[0001] This invention relates to the field of battery cell storage technology, specifically to a device for detecting stored battery cells and for charging and discharging them. Background Technology

[0002] Battery cell production refers to the process of manufacturing battery cells—the core component used in various battery products—from various raw materials through a series of complex processes and procedures. Battery cell production generally includes steps such as raw material preparation, electrode fabrication, cell assembly, electrolyte injection and formation, as well as testing and sorting.

[0003] After production, battery cells are usually stored on shelves. However, there are strict requirements and regulations for storage, including requirements on the storage environment, shelf selection and placement, and storage time limits.

[0004] During the flat storage of battery cells, they need to undergo two charge-discharge cycles and are frequently tested. Furthermore, the cells need to be recharged before shipment. Existing finished product warehouse shelves do not have the conditions for secondary rework. In actual storage, when it is necessary to charge, discharge, or test the stored battery cells, the finished cells need to be taken out of the shelves and moved to the testing and charging stations for testing and charging. After testing and charging are completed, they need to be placed back on the shelves. This leads to the risk of damage to the battery cells during transportation. Summary of the Invention

[0005] The purpose of this invention is to provide a device for detecting stockpiled battery cells and for charging and discharging them, so as to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for detecting and charging / discharging battery cells in inventory, comprising a shelf and finished battery cells placed on the shelf, and a base, wherein multiple movable plates are slidably arranged on the base, and a scissor-type electric telescopic frame is arranged between each movable plate, and multiple mounting plates are rotatably arranged on each movable plate, and two charging probes for detecting and charging the finished battery cells are fixedly arranged on each mounting plate; a clamping device, comprising rotating balls rotatably arranged on both sides of each mounting plate, a clamping plate being fixedly arranged on the side of each rotating ball near the charging probe, and a moving block for driving the rotating balls to rotate being slidably arranged on the side of each mounting plate away from the charging probe.

[0007] Preferably, each of the movable plates is provided with a rotating cylinder, and each of the rotating cylinders is provided with a sliding sleeve. Each of the sliding sleeves is fixedly connected to each mounting plate in a one-to-one correspondence. A rotating rod is provided slidably inside each of the sliding sleeves, and the rotating rod is rotatably connected to the movable plate.

[0008] Preferably, a gear is fixedly provided at the end of each rotating rod away from the mounting plate, and an L-shaped toothed plate that meshes with the gear is slidably provided on each moving plate.

[0009] Preferably, each of the mounting plates is rotatably provided with a fixed post, and each fixed post is fixedly connected to each rotating ball in a one-to-one correspondence. A torsion spring is fixedly provided between the end of each fixed post away from the mounting plate and the mounting plate.

[0010] Preferably, the rotating rod has a threaded groove, a toothed ring is threadedly connected to the rotating rod, a second spring is fixedly installed on the toothed ring, and a straight toothed plate that meshes with the toothed ring is slidably installed on each of the moving plates.

[0011] Preferably, each of the movable sleeves is fitted with an abutment plate and a connecting plate, and two connecting rods are fixedly arranged between the abutment plate and the connecting plate, and two push rods are fixedly arranged on the toothed ring.

[0012] Preferably, each of the connecting plates is rotatably provided with a pressure plate, and the end of each pressure plate away from the connecting plate is rotatably connected to each of the moving blocks in a corresponding manner. Each of the rotating balls is fixedly provided with an abutment rod on the side away from the clamping plate.

[0013] Preferably, a fixing plate is fixedly provided on the base, and a pull plate is slidably provided on the base. A first pull rope is fixedly provided on the pull plate, and each of the L-shaped toothed plates is fixedly connected to the first pull rope.

[0014] Preferably, a second pull rope is fixedly provided on the pull plate, and each of the straight toothed plates is fixedly connected to the second pull rope.

[0015] Preferably, a first spring is fixedly provided between the straight toothed plate and the L-shaped toothed plate near the fixed plate and the fixed plate.

[0016] In the above technical solution, the present invention provides a device for detecting and charging / discharging battery cells in stock, which has the following beneficial effects: the scissor-type electric telescopic frame can control the synchronous movement of each moving plate, avoiding space occupation when not in use; the movement of the pull plate can pull the first pull rope to move, and then drive the mounting plate to rotate through the L-shaped toothed plate, thereby aligning the charging probe with the positive and negative terminals of the finished battery cell; after completion, the mounting plate and the moving plate can be parallel, saving space; at the same time, when the pull plate moves, the second pull rope can drive the straight toothed plate to move, thereby moving the charging probe to abut against the finished battery cell, and driving the clamping plate to rotate to clamp and fix the finished battery cell, effectively preventing the charging probe from being loosely connected to the positive and negative terminals of the finished battery cell, eliminating the need for repeated transfer of the finished battery cell, increasing the efficiency of detection and charging, and reducing damage to the finished battery cell caused by transfer. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the movable plate provided in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the second pull rope provided in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the L-shaped toothed plate provided in an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the mounting bracket provided in an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the moving block provided in an embodiment of the present invention;

[0024] Figure 7 Provided for embodiments of the present invention Figure 3 Enlarged view of the structure at point A in the middle.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Shelf; 2. Finished battery cells; 3. Base; 4. Fixing plate; 5. Pull plate; 6. Moving plate; 7. Scissor-type electric telescopic rack; 8. Hydraulic cylinder; 9. First pull rope; 10. Second pull rope; 11. L-shaped toothed plate; 12. Straight toothed plate; 13. First spring; 14. Gear; 15. Gear ring; 16. Rotating cylinder; 17. Rotating rod; 18. Second spring; 19. Push rod; 20. Moving sleeve; 21. Abutment plate; 22. Connecting rod; 23. Connecting plate; 24. Mounting plate; 25. Pressure plate; 26. Moving block; 27. Rotating ball; 28. Abutment rod; 29. ​​Clamping plate; 30. Fixing column; 31. Torsion spring; 32. Charging probe; 33. Mounting slot. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Please see Figure 1-7A device for testing and charging / discharging battery cells in stock includes a shelf 1 and finished battery cells 2 placed on the shelf 1. It also includes a base 3, on which multiple movable plates 6 are slidably arranged. A scissor-type electric telescopic frame 7 is arranged between each movable plate 6. Several mounting plates 24 are rotatably arranged on each movable plate 6. Two charging probes 32 for testing and recharging the finished battery cells 2 are fixedly arranged on each mounting plate 24. A clamping device includes rotating balls 27 rotatably arranged on both sides of each mounting plate 24, with each rotating ball 27 close to the charging probes 32. Each mounting plate 24 has a clamping plate 29 fixedly installed on one side, and each mounting plate 24 has a sliding block 26 that drives the rotating ball 27 to rotate on the side away from the charging probe 32; the base 3 is fixedly installed below the shelf 1, and each moving plate 6 is slidably installed on the base 3. The scissor-type electric telescopic frame 7 is similar to the structure of an electric telescopic gate or a scissor-type lifting platform. This is existing technology and will not be described in detail here. The corresponding connecting rod of the scissor-type electric telescopic frame 7 is rotatably connected to the corresponding moving plate 6. The finished battery cells 2 on the shelf 1 are aligned vertically in each column. The number of movable plates 6 is the same as the number of columns of finished battery cells 2 on shelf 1. Initially, each movable plate 6 is located at one end of the base. The scissor-type electric telescopic frame 7 can make each movable plate 6 move evenly on the base, thereby aligning each movable plate 6 with the neatly stacked finished battery cells 2 on shelf 1. The scissor-type electric telescopic frame 7 can also make each movable plate 6 move synchronously. When the movable plate 6 is aligned with the finished battery cells 2 in the corresponding column, the drive mounting plate 24 moves closer to the finished battery cells 2. As the mounting plate 24 moves, the two charging probes 32 on the mounting plate 24 respectively come into contact with the positive and negative terminals of the finished battery cells 2. The charging probe 32 can be used to test the finished battery cell 2 and also to charge the finished battery cell 2. This is existing technology. When the charging probe 32 comes into contact with the positive and negative terminals of the finished battery cell 2, it drives each moving block 26 to move. The movement of the moving block 26 drives the rotating ball 27 to rotate. When the rotating ball 27 rotates, it can drive the clamping plate 29 to rotate, thereby clamping and fixing the finished battery cell 2. This can prevent the charging probe 32 from making a loose connection with the positive and negative terminals of the finished battery cell 2. The finished battery cell 2 can be tested and charged on the shelf 1, effectively preventing the finished battery cell 2 from being damaged during transportation.

[0029] Specifically, each movable plate 6 has a rotating cylinder 16 rotatably mounted inside it, and each rotating cylinder 16 has a sliding movable sleeve 20 slidably mounted inside it. Each movable sleeve 20 is fixedly connected to each mounting plate 24 in a one-to-one correspondence. A rotating rod 17 is slidably mounted inside the movable sleeve 20, and the rotating rod 17 is rotatably connected to the movable plate 6. Each movable plate 6 has a mounting groove 33, and the rotating cylinder 16 is rotatably mounted at one end of the mounting groove 33 near the shelf 1. The movable sleeve 20 is slidably connected to the rotating cylinder 16, so that the movable sleeve 20 can both... The rotating rod 17 is rotatably connected to the mounting groove 33 of the movable plate 6 on the side away from the shelf 1. The rotating rod 17 and the movable sleeve 20 can only be slidably connected. In the initial state, there is a certain distance between the mounting plate 24 and the finished battery cell 2. When the charging probe 32 needs to contact the positive and negative terminals of the finished battery cell 2, the rotating rod 17 is rotated. The rotating rod 17 pushes the movable sleeve 20 to move towards the side closer to the shelf 1. The movable sleeve 20 drives the mounting plate 24 to move, so that the charging probe 32 contacts the finished battery cell 2.

[0030] Furthermore, a gear 14 is fixedly installed at the end of each rotating rod 17 away from the mounting plate 24, and an L-shaped toothed plate 11 that meshes with the gear 14 is slidably installed on each movable plate 6. In the initial state, each movable plate 6 is located at one end of the base 3. At this time, each movable plate 6 will not obstruct the shelf 1, thus facilitating other operations on the battery cells on the shelf 1, while also preventing the movable plates 6 from occupying space. At this time, each mounting plate 24 is parallel to the corresponding movable plate 6. When it is necessary to test and charge the finished battery cell 2, the movable plate 6 is moved to the designated position by the scissor-type electric telescopic frame 7. When the L-shaped toothed plate 11 is moved by the moving plate 6, the gear 14 is rotated. When the gear 14 rotates, the rotating rod 17 rotates 90 degrees. The rotating rod 17 rotates the moving sleeve 20 and the mounting plate 24 90 degrees, so that the mounting plate 24 rotates from a state parallel to the moving plate 6 to a state perpendicular to the moving plate 6. At this time, the two charging probes 32 on the mounting plate 24 are aligned with the corresponding positive and negative terminals. When the moving mounting plate 24 is close to the finished cell 2, the charging probes 32 can come into contact with the positive and negative terminals of the cell. When the short arm end of the L-shaped plate comes into contact with the gear 14, the gear 14 can be fixed, so that the mounting plate 24 only rotates 90 degrees.

[0031] Furthermore, each mounting plate 24 is rotatably equipped with a fixing post 30, and each fixing post 30 is fixedly connected to each rotating ball 27 in a one-to-one correspondence. A torsion spring 31 is fixedly installed between the end of each fixing post 30 away from the mounting plate 24 and the mounting plate 24; for example... Figure 6As shown, in the initial state, the two clamping plates 29 on the mounting plate 24 are in an open state. When the moving block 26 abuts against the rotating ball 27, it will cause the rotating ball 27 to rotate, thereby causing the clamping plate 29 to rotate and stably clamp the battery cell. When the moving plate 6 no longer pushes the rotating ball 27 to rotate, the torsion spring 31 can drive the fixed column 30 to reset, thereby causing the rotating ball 27 to drive the clamping plate 29 to reset and release the battery cell finished product 2.

[0032] Specifically, the rotating rod 17 has a threaded groove, and a toothed ring 15 is threadedly connected to the rotating rod 17. A second spring 18 is fixedly installed on the toothed ring 15. Each moving plate 6 has a straight toothed plate 12 that meshes with the toothed ring 15. The diameter of the moving sleeve 20 is larger than the diameter of the overall cross-section of the second spring 18. The straight toothed plate 12 can drive the toothed ring 15 to rotate. The toothed ring 15 is threadedly connected to the rotating rod 17 through the threaded groove. When each moving plate 6 is about to align with the corresponding finished battery cell 2, the moving plate 6 will drive the straight toothed plate 12 to move, thereby driving the toothed ring 15 to rotate. When the toothed ring 15 rotates, the threaded groove allows the toothed ring 15 to move towards the mounting plate 24. When the toothed ring 15 moves towards the mounting plate 24, the second spring 18 can push the moving sleeve 20 towards the shelf 1, thereby causing the mounting plate 24 to move towards the finished battery cell 2.

[0033] In another embodiment of the present invention: each movable sleeve 20 is fitted with an abutment plate 21 and a connecting plate 23, and two connecting rods 22 are fixedly arranged between the abutment plate 21 and the connecting plate 23. Two push rods 19 are fixedly arranged on the toothed ring 15. The abutment plate 21 is located in the mounting groove 33, and the connecting plate 23 is located between the mounting plate 24 and the movable plate 6. The distance between the two connecting rods 22 is greater than the diameter of the movable sleeve 20. The toothed ring 15 is driven to rotate by the straight toothed plate 12. When the toothed ring 15 rotates, it moves along the rotating rod 17 through the threaded groove. When the toothed ring 15 moves, it pushes the movable sleeve 20 to move through the second spring 18, thereby causing the mounting plate 24 to move. As the gear ring 15 continues to move towards the shelf 1, the second spring 18 is compressed. At this time, the movement of the gear ring 15 pushes the abutment plate 21 towards the shelf 1 through the two push rods 19. When the abutment plate 21 moves, it drives the connecting plate 23 towards the shelf 1 through the connecting rod 22. The two connecting rods 22 pass through the rotating cylinder 16 and are fixedly connected to the connecting plate 23. While the gear ring 15 pushes the abutment plate 21 towards the shelf 1, it pushes the two moving blocks 26 on the mounting plate 24 towards the rotating ball 27 through the connecting plate 23, so that the clamping plate 29 clamps the finished battery cell 2.

[0034] Specifically, each connecting plate 23 is rotatably equipped with a pressure plate 25, and the end of each pressure plate 25 away from the connecting plate 23 is rotatably connected to each moving block 26. Each rotating ball 27 is fixedly equipped with an abutment rod 28 on the side away from the clamping plate 29. In the initial state, the connecting plate 23 is on the side closer to the moving plate 6. When the toothed ring 15 moves, it first pushes the moving sleeve 20 to move through the second spring 18, so that the charging probe 32 on the mounting plate 24 contacts the positive and negative terminals of the finished battery cell 2. Then, as the toothed ring 15 continues to move, the push rod 19 moves the connecting plate 23 towards the shelf 1. At this time, the connecting plate 23 drives the corresponding pressure plate 25 to rotate. When the pressure plate 25 rotates, it pushes the moving block 26 to move closer to the rotating ball 27. During the movement, the moving block 26 abuts against the corresponding abutting rod 28, thereby pushing the rotating ball 27 to rotate, which in turn causes the clamping plate 29 to rotate. By changing the length of the push rod 19, it is possible to control whether the abutting plate 21 moves first or the moving sleeve 20 moves first. This allows the charging probe 32 to abut against the finished battery cell 2 first, and then the clamping plate 29 to clamp the finished battery cell 2. Alternatively, the clamping plate 29 can clamp the finished battery cell 2 first, and then the charging probe 32 abuts against the finished battery cell 2.

[0035] Furthermore, a fixed plate 4 is fixedly installed on the base 3, and a pull plate 5 is slidably installed on the base 3. A first pull rope 9 is fixedly installed on the pull plate 5, and each L-shaped toothed plate 11 is fixedly connected to the first pull rope 9. The first pull rope 9 between the movable plate 6 away from the fixed plate 4 and the pull plate 5 has a certain elasticity. A hydraulic cylinder 8 is fixedly installed between the movable plate 6 away from the fixed plate 4 and the pull plate 5. When each movable plate 6 is closed together, the first pull rope 9 is in a relaxed state. When the movable plate 6 moves, the pull plate 5 also moves. When each movable plate 6 is moved to a designated position by the scissor-type electric telescopic frame 7, the first pull rope 9 is in a taut state. The hydraulic cylinder 8 pushes the pull plate 5 to move away from the movable plate 6. At this time, the first pull rope 9 pulls each L-shaped toothed plate 11 to move on the movable plate 6, thereby driving the gear 14 to rotate and causing the mounting plate 24 to rotate 90 degrees.

[0036] Specifically, a second pull rope 10 is fixedly installed on the pull plate 5, and each straight toothed plate 12 is fixedly connected to the second pull rope 10. When the moving plate 6 moves, the pull plate 5 also moves accordingly. When each moving plate 6 is moved to the designated position by the scissor-type electric telescopic frame 7, the second pull rope 10 between adjacent moving plates 6 is in a taut state, while the second pull rope 10 between the moving plate 6 away from the fixed plate 4 and the pull plate 5 is in a relaxed state. The hydraulic cylinder 8 pushes the pull plate 5 to move away from the moving plate 6. When the first pull rope 9 pulls each mounting plate 24 to rotate 90 degrees, the second pull rope 10 between the moving plate 6 away from the fixed plate 4 and the pull plate 5 begins to tighten, and the corresponding part of the first pull rope 9 is stretched. As the pull plate 5 continues to move, the second pull rope 10 pulls each straight toothed plate 12 to rotate, so that the charging probe 32 on the mounting plate 24 abuts against the finished battery cell 2, and drives the clamping plate 29 to clamp the finished battery cell 2.

[0037] Furthermore, a first spring 13 is fixedly installed between the straight toothed plate 12 and the L-shaped toothed plate 11 near the fixed plate 4 and the fixed plate 4. When each L-shaped toothed plate 11 and the support plate moves away from the fixed plate 4, the corresponding first spring 13 will be stretched. When the finished battery cell 2 on the shelf 1 has completed the test or recharge, each moving plate 6 is reset by controlling the scissor-type electric telescopic frame 7. At this time, the first spring 13, together with the first pull rope 9 and the second pull rope 10, can reset each L-shaped toothed plate 11 and the straight toothed plate 12. A controller is installed on the base 3 that is connected to the scissor-type electric telescopic frame 7, the hydraulic cylinder 8, and the charging probe 32 wires. The controller can control the operation of the device.

[0038] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for testing and charging / discharging battery cells in inventory, comprising a shelf (1) and finished battery cells (2) placed on the shelf (1), characterized in that, It also includes a base (3), on which multiple movable plates (6) are slidably arranged, and a scissor-type electric telescopic frame (7) is arranged between each movable plate (6). Several mounting plates (24) are rotatably arranged on each movable plate (6), and two charging probes (32) for testing and charging the finished battery cell (2) are fixedly arranged on each mounting plate (24). The clamping device includes rotating balls (27) rotatably disposed on both sides of each mounting plate (24). Each rotating ball (27) is fixedly provided with a clamping plate (29) on the side near the charging probe (32). Each mounting plate (24) is slidably provided with a moving block (26) that drives the rotating ball (27) to rotate on the side away from the charging probe (32).

2. The device for detecting stocked battery cells and charging / discharging according to claim 1, characterized in that, Each of the movable plates (6) is rotatably provided with a rotating cylinder (16), and each of the rotating cylinders (16) is slidably provided with a movable sleeve (20). Each movable sleeve (20) is fixedly connected to each mounting plate (24) in a one-to-one correspondence. A rotating rod (17) is slidably provided in the movable sleeve (20), and the rotating rod (17) is rotatably connected to the movable plate (6).

3. The device for detecting stocked battery cells and for charging and discharging according to claim 2, characterized in that, Each of the rotating rods (17) has a gear (14) fixedly installed at the end away from the mounting plate (24), and each of the moving plates (6) has an L-shaped toothed plate (11) that meshes with the gear (14).

4. The device for detecting stocked battery cells and charging / discharging according to claim 3, characterized in that, Each of the mounting plates (24) is rotatably provided with a fixed post (30), and each fixed post (30) is fixedly connected to each rotating ball (27) in a one-to-one correspondence. A torsion spring (31) is fixedly provided between the end of each fixed post (30) away from the mounting plate (24) and the mounting plate (24).

5. A device for detecting stocked battery cells and for charging and discharging according to claim 4, characterized in that, The rotating rod (17) has a threaded groove, and a toothed ring (15) is threadedly connected to the rotating rod (17). A second spring (18) is fixedly installed on the toothed ring (15), and a straight toothed plate (12) that meshes with the toothed ring (15) is slidably installed on each of the moving plates (6).

6. The device for detecting stocked battery cells and charging / discharging according to claim 5, characterized in that, Each of the movable sleeves (20) is fitted with an abutment plate (21) and a connecting plate (23). Two connecting rods (22) are fixedly arranged between the abutment plate (21) and the connecting plate (23). Two push rods (19) are fixedly arranged on the toothed ring (15).

7. A device for detecting stocked battery cells and for charging and discharging according to claim 6, characterized in that, Each of the connecting discs (23) is rotatably provided with a pressure plate (25). The end of each pressure plate (25) away from the connecting disc (23) is rotatably connected to each moving block (26) in a one-to-one correspondence. Each of the rotating balls (27) is fixedly provided with an abutment rod (28) on the side away from the clamping plate (29).

8. A device for detecting stocked battery cells and for charging and discharging according to claim 7, characterized in that, A fixing plate (4) is fixedly installed on the base (3), and a pull plate (5) is slidably installed on the base (3). A first pull rope (9) is fixedly installed on the pull plate (5), and each L-shaped toothed plate (11) is fixedly connected to the first pull rope (9).

9. A device for detecting stocked battery cells and for charging and discharging according to claim 8, characterized in that, A second pull rope (10) is fixedly installed on the pull plate (5), and each of the straight toothed plates (12) is fixedly connected to the second pull rope (10).

10. A device for detecting stocked battery cells and for charging and discharging according to claim 9, characterized in that, A first spring (13) is fixedly installed between the straight toothed plate (12) and the L-shaped toothed plate (11) near the fixed plate (4) and the fixed plate (4).