Lithium battery pack aging test device

Abstract

The utility model discloses an aging test device for a lithium battery pack, and aims to solve the problems that the existing lithium battery pack needs to be turned over manually in the aging test process, and the efficiency is low. According to the technical scheme, the device is characterized in that the device comprises an inspection box body, the inner wall of the inspection box body is provided with a moving block in sliding connection with the inspection box body, the inner wall of the inspection box body is provided with a moving device used for driving the moving block to move, and the side wall of the moving block is rotationally connected with a placing plate; a rotating device for driving the placement plate to rotate is arranged above the inner wall of the inspection box body, and the upper end surface of the placement plate is fixedly connected with a bracket. The mobile device is arranged to drive the lithium battery pack to be in contact with and separated from the connecting contacts, so that charging of the lithium battery is realized, and the lithium battery pack is driven to rotate in the standing process through the rotating device after the charging is completed and the lithium battery pack is separated, so that electrolyte in the lithium battery is more uniformly distributed up and down; and the tedious operation of manual one-by-one turn-over is replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery aging, and more specifically, it relates to a lithium battery pack aging inspection device. Background Art

[0002] A lithium battery is a primary battery with a lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. It is different from rechargeable lithium-ion batteries and lithium-ion polymer batteries. The performance of the battery is more stable after high-temperature aging. Most lithium-ion battery manufacturers adopt the high-temperature aging operation mode during the production process, aging at a temperature of 45-50 degrees Celsius for 1-3 days, and then leaving it at room temperature. The potential bad phenomena of the battery after high-temperature aging will be exposed: for example, voltage change, thickness change, and internal resistance change are all direct tests of the comprehensive safety and electrochemical performance indicators of this batch of batteries, realizing the inspection operation of lithium batteries.

[0003] During the traditional aging process, it is necessary to first charge the lithium battery, and then transfer the charged lithium battery to the carrier for static placement. During this period, in order to ensure more uniform infiltration of the electrolyte, it is also necessary to frequently turn each lithium battery over one by one. The whole process is rather cumbersome and takes up a large amount of human resources.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Content of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a lithium battery pack aging inspection device. By setting a moving device to drive the lithium battery pack to contact and separate from the connection contacts, and then driving the lithium battery pack to rotate during the static placement process by a rotating device after the charging is completed and separated, the electrolyte in the lithium battery is distributed more evenly up and down, replacing the cumbersome operation of manually turning each one over one by one.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: A lithium battery pack aging inspection device includes an inspection box body. A moving block slidably connected to the inner wall of the inspection box body is arranged on the inner wall of the inspection box body. A moving device for driving the moving block to move is arranged on the inner wall of the inspection box body. A placing plate is rotatably connected to the side wall of the moving block. A rotating device for driving the placing plate to rotate is arranged above the inner wall of the inspection box body. A support is fixedly connected to the upper end surface of the placing plate. A telescopic rod is fixedly connected to the support. A clamping plate for pressing the lithium battery onto the placing plate is fixedly connected to the output end of the telescopic rod. A charging area is arranged on the inner wall of the inspection box body, and a plurality of connection contacts are arranged in the charging area.

[0007] The present utility model is further configured as follows: The mobile device includes a groove provided in the inspection box body. A lead screw is rotatably connected to the inner wall of the groove. A motor for driving the rotation of the lead screw is installed on the outer wall of the inspection box body. A nut seat is sleeved on the lead screw, and the nut seat is fixedly connected to the moving block.

[0008] The present utility model is further configured as follows: The rotating device includes a gear rotatably connected to the moving block. The side wall of the placement plate is fixedly connected to the gear. A cross bar is fixedly connected to the inner wall of the inspection box body. A rack meshing with the gear is provided on the upper end surface of the cross bar.

[0009] The present utility model is further configured as follows: A limiting block is fixedly connected to the side wall of the moving block. A limiting groove for the limiting block to insert and move is provided on the inner wall of the groove.

[0010] The present utility model is further configured as follows: An elastic pad is fixedly connected to the lower end surface of the clamping plate. A number of recessed ends distributed in an array are provided on the surface of the elastic pad.

[0011] The present utility model is further configured as follows: The telescopic rod is an electric push rod.

[0012] The present utility model is further configured as follows: A number of universal ball bearings distributed in an array are provided on the inner wall of the limiting groove. The universal ball bearings are in contact with the surface of the limiting block.

[0013] In summary, the present utility model has the following beneficial effects:

[0014] The present utility model drives the lithium battery pack to contact and separate from the connection contacts through the setting of the mobile device, realizing the charging of the lithium battery. After the charging is completed and separated, the rotating device drives the lithium battery pack to rotate during the static process, making the electrolyte in the lithium battery more evenly distributed up and down, replacing the cumbersome operation of manually turning each one over. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model, showing the u-structural features of the inner wall of the inspection box body;

[0016] Figure 2 It is a schematic diagram of the structure of the present utility model Figure 1 showing the connection relationship between the gear and the rack;

[0017] Figure 3 It is a schematic diagram of the structure of the present utility model Figure 2 showing the structural features of the placement plate and the clamping plate;

[0018] Figure 4 It is a schematic diagram of the structure of the present utility model Figure 3 showing the structural features of the mobile device and the driving device.

[0019] In the figure: 1. Inspection box body; 2. Moving block; 3. Placing plate; 4. Bracket; 5. Telescopic rod; 6. Clamping plate; 7. Charging area; 8. Connecting contact; 9. Groove; 10. Lead screw; 11. Motor; 12. Gear; 13. Cross bar; 14. Rack. Specific implementation manner

[0020] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0023] The present utility model will be described in detail below in conjunction with the accompanying drawings.

[0024] A lithium battery pack aging inspection device, as Figures 1 - 4 shown, includes an inspection box body 1. A moving block 2 slidably connected to the inner wall of the inspection box body 1 is provided on the inner wall of the inspection box body 1. A moving device for driving the moving block 2 to move is provided on the inner wall of the inspection box body 1. A placing plate 3 is rotatably connected to the side wall of the moving block 2. A rotating device for driving the placing plate 3 to rotate is provided above the inner wall of the inspection box body 1.

[0025] A support 4 is fixedly connected to the upper end surface of the placement plate 3. A telescopic rod 5 is fixedly connected to the support 4. The telescopic rod 5 is an electric push rod. The output end of the telescopic rod 5 is fixedly connected to a clamping plate 6 for pressing the lithium battery against the placement plate 3. An elastic pad is fixedly connected to the lower end surface of the clamping plate 6. A number of recessed ends are arranged in an array on the surface of the elastic pad. The material of the elastic pad is highly elastic rubber. The recessed sections are arranged to form anti-slip patterns, increasing the friction between the clamping plate 6 and the lithium battery pack and making the clamping of the clamping plate 6 more stable. A charging area 7 is arranged on the inner wall of the inspection box body 1, and a number of connection contacts 8 are arranged in the charging area 7.

[0026] The moving device includes a groove 9 arranged in the inspection box body 1. A lead screw 10 is rotatably connected to the inner wall of the groove 9. A motor 11 for driving the lead screw 10 to rotate is installed on the outer wall of the inspection box body 1. The motor 11 is a servo motor. One end of the lead screw 10 is in transmission connection with the output shaft of the motor 11. A nut seat is sleeved on the lead screw 10, and the nut seat is fixedly connected to the moving block 2. The nut seat and the moving block 2 are integrally formed.

[0027] A limiting block is fixedly connected to the side wall of the moving block 2. A limiting groove for the limiting block to insert and move is arranged on the inner wall of the groove 9. A number of universal ball bearings are arranged in an array on the inner wall of the limiting groove. The universal ball bearings are in contact with the surface of the limiting block. During the process of the nut seat and the moving block 2 moving along with the rotation of the lead screw 10, the limiting block will insert into the limiting groove and move, making the nut seat and the moving block 2 more stable during the moving process. When the limiting block moves along the limiting groove, the universal ball bearings will roll along the surface of the limiting block, reducing the friction between the limiting block and the limiting groove and making the movement of the nut seat and the moving block 2 smoother.

[0028] The rotating device includes a gear 12 rotatably connected to the moving block 2. The side wall of the placement plate 3 is fixedly connected to the gear 12. A cross bar 13 is fixedly connected to the inner wall of the inspection box body 1. A rack 14 meshing with the gear 12 is arranged on the upper end surface of the cross bar 13.

[0029] Working principle: Taking the end of the cross bar 13 and the rack 14 close to the charging area 7 as the starting end, when the gear 12 rotates to the starting end of the rack 14, the placing plate 3 is in a horizontal state. At this time, the lithium battery pack to be tested is placed on the placing plate 3, and then the telescopic rod 5 is extended, so that the output end of the telescopic rod 5 drives the clamping plate 6 to press down, pressing the lithium battery pack tightly on the placing plate 3 to realize the fixation of the lithium battery pack. At this time, the lithium battery pack will be connected to the connection contact 8 to realize the charging of the lithium battery pack. After the charging is completed, the motor 11 drives the lead screw 10 to rotate. After the lead screw 10 rotates, it can drive the nut seat and the moving block 2 to move towards the end away from the charging area 7. The moving block 2 can drive the placing plate 3 and the lithium battery pack fixed on the placing plate 3 to move away from the charging area 7 together. During the moving away process, since the gear 12 meshes with the rack 14 on the cross bar 13, during the movement of the gear 12, it will also drive the placing plate 3 and the lithium battery pack to rotate, enabling the lithium battery pack to continuously flip during the static process. The flipping speed can be controlled by adjusting the moving speed of the nut seat, so that the electrolyte in the lithium battery pack can be more evenly distributed and the aging test effect of the lithium battery pack is better;

[0030] When the lithium battery pack needs to be charged again, the motor 11 drives the lead screw 10 to rotate in the reverse direction. The lead screw 10 can drive the nut seat and the moving block 2 to drive the placing plate 3 to approach the connection contact 8. During the movement, the placing plate 3 and the lithium battery pack will rotate in the opposite direction until the gear 12 moves and rotates back to the starting end of the rack 14, and the placing plate 3 will return to the horizontal state again, enabling the lithium battery pack to contact the connection contact 8 again. Then, the motor 11 is turned off to stop the rotation of the lead screw 10, and the gear 12 stays at the current position. When the lithium battery pack needs to be removed, the electric push rod is contracted to drive the clamping plate 6 to lift up, loosening the lithium battery pack, and the lithium battery pack can be removed from the placing plate 3, eliminating the need for manual frequent flipping of the lithium battery pack and saving manpower.

[0031] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. An aging inspection device for a lithium battery pack, comprising an inspection box body (1), characterized in that: On the inner wall of the inspection box body (1), there is a moving block (2) slidably connected thereto. On the inner wall of the inspection box body (1), there is a moving device for driving the moving block (2) to move. On the side wall of the moving block (2), there is a placing plate (3) rotatably connected. Above the inner wall of the inspection box body (1), there is a rotating device for driving the placing plate (3) to rotate. On the upper end surface of the placing plate (3), there is a bracket (4) fixedly connected. On the bracket (4), there is a telescopic rod (5) fixedly connected. The output end of the telescopic rod (5) is fixedly connected with a clamping plate (6) for pressing the lithium battery on the placing plate (3). On the inner wall of the inspection box body (1), there is a charging area (7), and the charging area (7) is provided with a plurality of connection contacts (8).

2. The aging inspection device for a lithium battery pack according to claim 1, wherein: The moving device includes a groove (9) arranged in the inspection box body (1). On the inner wall of the groove (9), there is a lead screw (10) rotatably connected. On the outer wall of the inspection box body (1), there is a motor (11) installed for driving the lead screw (10) to rotate. A nut seat is sleeved on the lead screw (10), and the nut seat is fixedly connected with the moving block (2).

3. The aging inspection device for a lithium battery pack according to claim 1, wherein: The rotating device includes a gear (12) rotatably connected with the moving block (2). The side wall of the placing plate (3) is fixedly connected with the gear (12). On the inner wall of the inspection box body (1), there is a cross bar (13) fixedly connected. On the upper end surface of the cross bar (13), there is a rack (14) meshing with the gear (12).

4. The aging inspection device for a lithium battery pack according to claim 2, wherein: On the side wall of the moving block (2), there is a limiting block fixedly connected. On the inner wall of the groove (9), there is a limiting groove for the limiting block to insert and move.

5. The aging inspection device for a lithium battery pack according to claim 1, wherein: On the lower end surface of the clamping plate (6), there is an elastic pad fixedly connected. On the surface of the elastic pad, there are a plurality of recessed ends distributed in an array.

6. The aging inspection device for a lithium battery pack according to claim 1, wherein: The telescopic rod (5) is an electric push rod.

7. An aging inspection device for a lithium battery pack according to claim 4, characterized in that: On the inner wall of the limiting groove, there are a plurality of universal balls distributed in an array, and the surfaces of the universal balls are in contact with the surface of the limiting block.

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