Battery cell leak detection equipment

Abstract

The utility model relates to the technical field of secondary battery production, and discloses a battery cell leak detection device. The battery cell leak hunting device comprises a rotating base, a sealing plate, a driving assembly and a plurality of leak hunting boxes which are arranged on the rotating base and used for containing battery cells, one side of each leak hunting box is open, and the sealing plate is provided with a test port used for being connected with a supercharging device; the rotating base can drive the leak hunting box body to rotate to a position corresponding to the sealing plate, and the driving assembly can drive the sealing plate or the leak hunting box body to move, so that the sealing plate blocks the open end of the leak hunting box body. According to the battery cell leak hunting device provided by the utility model, a worker does not need to move back and forth, the physical strength is saved, the working efficiency is improved, and in the detection process of the battery cell, the leak hunting box body filled with the detected battery cell rotates to a position corresponding to the position of the worker, so that the worker can take and place the battery cell conveniently, and the working efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to secondary battery production technical field, concretely relates to a kind of electric core leak detection equipment. BACKGROUND

[0002] Leakage is one of the common problems of soft package lithium battery, and the damage of PP layer at the edge sealing position or the damage of the tab packaging position can cause leakage. Among them, the causes of leakage can be divided into two types: chemical corrosion and electrochemical corrosion. Chemical corrosion is mainly caused by the reaction of water and electrolyte to produce hydrofluoric acid, while electrochemical corrosion is caused by the corrosion of soft package battery due to electrochemical reaction, which includes ion short circuit and electronic short circuit. The edge sealing leak detection of soft package lithium battery is an important link to ensure the safety performance of battery, and the key of edge sealing leak detection is to detect these potential damage points to ensure the safety and reliability of battery. Most of the current edge sealing leak detection methods are based on the appearance change detection of battery after positive pressure to judge whether the battery leaks or not. Although this kind of leak detection method can ensure the detection effect, the staff needs to move the battery back and forth between the placement area and the detection area, which wastes physical strength and affects the work efficiency. Moreover, the staff needs to wait continuously during the detection process, which wastes time and further affects the work efficiency. SUMMARY

[0003] In order to solve the technical problems of wasting physical strength of staff and affecting work efficiency in the current battery leak detection method, the utility model provides a kind of electric core leak detection equipment.

[0004] The utility model provides a kind of electric core leak detection equipment, including rotating base, seal plate, drive assembly and multiple for placing electric core leak detection box body being arranged on the rotating base, the side of leak detection box body is open, the test port for being connected with the booster equipment is equipped on the seal plate;

[0005] Among them, the rotating base can drive the leak detection box body to rotate to the position corresponding to the seal plate, and the drive assembly can drive the seal plate or the leak detection box body to move, so that the seal plate blocks the open end of the leak detection box body.

[0006] Optionally, the rotating base includes a mounting bracket and a turntable rotatably arranged on the mounting bracket, and the turntable is provided with a plurality of placement positions for placing the leak detection box body along the circumferential direction thereof.

[0007] Optionally, the middle part of the turntable is provided with a positioning disc, and the turntable can rotate relative to the positioning disc, and the positioning disc is provided with an elastic rod, and the end of the elastic rod extends out of the outer circumference of the positioning disc, and the inner side of the turntable is provided with a positioning hole.

[0008] When the end of the elastic rod extends into the positioning hole, one of the leak detection boxes is positioned opposite the sealing plate.

[0009] Optionally, a handrail is provided between every two adjacent placement positions.

[0010] Optionally, the leak detection box and the rotating base are detachably connected via a connector;

[0011] The sealing plate is equipped with a sealing element, and the sealing plate is sealed to the open end of the leak detection box through the sealing element.

[0012] Optionally, the sealing plate and the driving assembly are disposed opposite each other on both sides of the rotating base, and the driving assembly can pass through the rotating base to push the leak detection box to move toward the sealing plate.

[0013] Optionally, the drive assembly includes a lifting column and a drive member for moving the lifting column along a direction close to or away from the sealing plate, and the rotating base is provided with a clearance hole at a position corresponding to the lifting column.

[0014] Optionally, the driving component includes a driving plate and a telescopic component. The driving plate is provided with an arc-shaped groove. The end of the lifting column away from the sealing plate is slidably disposed in the arc-shaped groove. The telescopic component is used to drive the driving plate to move along a direction perpendicular to the extension of the lifting column, and to drive the lifting column to move along the axial direction of the lifting column through the cooperation of the arc-shaped groove and the lifting column.

[0015] Optionally, the drive assembly further includes a guide column disposed on the lifting column, and a guide hole is provided at a position corresponding to the guide column on the rotating base, and the guide column can move relative to the guide hole along the axial direction of the guide column.

[0016] Optionally, the bottom of the leak detection box is provided with a first suction cup for negative pressure adsorption connection with the battery cell;

[0017] And / or, the sealing plate is provided with a second suction cup for negative pressure adsorption connection with the battery cell.

[0018] The technical solution provided by this utility model has the following advantages compared with the prior art:

[0019] The electric core leak detection device provided by the utility model, when in use, the staff is located at one side of the rotating base, the leak detection box body is located at a position opposite to the staff through the rotation of the rotating base, the staff performs the electric core loading and unloading work, the rotating base drives the leak detection box body to rotate to a position corresponding to the sealing plate, the sealing plate or the leak detection box body is driven to move through the driving assembly, the sealing plate blocks the open end of the leak detection box body, a sealed cavity is formed to perform the pressure increasing test, the liquid leakage effect of the electric core is detected, the electric core leak detection device under the design mode does not need the staff to reciprocatingly move, physical strength is saved, work efficiency is increased, and the leak detection box body loaded with the detected electric core rotates to a position corresponding to the staff position in the detection process, the staff can conveniently take and place the electric core, and work efficiency is further increased. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings incorporated into the specification and forming a part thereof, illustrate embodiments consistent with the present utility model, and together with the description, serve to explain the principles of the present utility model.

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, and obviously, other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0022] Figure 1 The structural schematic view of the electric core leak detection device according to the utility model embodiment;

[0023] Figure 2 The structural schematic view of the electric core leak detection device according to the utility model embodiment without the cover body;

[0024] Figure 3 The structural schematic view of the position relationship between the driving assembly and the rotating base according to the utility model embodiment;

[0025] Figure 4 The top view of Figure 3 ;

[0026] Figure 5 The structural schematic view of the rotating disc according to the utility model embodiment;

[0027] Figure 6 The structural schematic view of the driving assembly according to the utility model embodiment;

[0028] Figure 7 The structural schematic view of the back side of the leak detection box body according to the utility model embodiment;

[0029] Figure 8The structural schematic view of the utility model embodiment is shown when the leakage detection box is in the jacking state.

[0030] Mark explanation

[0031] 1, rotating base;11, mounting frame;12, turntable;121, positioning hole;122, partition;123, rib plate;13, positioning disc;131, elastic rod;14, handrail;15, avoiding hole;16, guide hole;2, sealing plate;3, driving assembly;31, jacking column;311, guide column;312, roller;32, driving piece;321, driving plate;3211, arc slot;322, telescopic piece;33, guide plate;34, guide rail;35, bottom plate;36, vertical plate;4, leakage detection box;41, baffle;5, battery cell;6, plug-in piece;61, plug-in column;62, plug-in hole;7, sealing piece;8, cover body;9, support. Specific implementation

[0032] In order to make the above-mentioned purpose, features and advantages of the utility model more clearly understood, the scheme of the utility model will be further described below.

[0033] In the following description, a lot of specific details are set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from the description herein; Obviously, the embodiments in the specification are only a part of the embodiments of the utility model, not all the embodiments.

[0034] Combined Figures 1 to 3As shown, the battery cell leak detection device provided by the utility model embodiment comprises a rotating base 1, a sealing plate 2, and a plurality of leak detection boxes 4 for loading battery cells 5 on the rotating base 1. The leak detection boxes 4 are internally formed with leak detection cavities capable of accommodating one or more battery cells 5. The leak detection cavities can be designed according to actual requirements. When the leak detection cavities accommodate a plurality of battery cells 5, the two adjacent battery cells 5 can be separated by a baffle 41 to avoid mutual influence and facilitate positioning of the battery cells 5. One side of the leak detection box 4 is open to allow a worker to load the battery cells 5 into the leak detection box 4 or take them out of the leak detection box 4, thereby increasing the convenience of operation. The sealing plate 2 is provided with a test port for connecting to a pressurizing device. The gas delivery pipeline of the pressurizing device is connected to the test port. The rotating base 1 can drive the leak detection box 4 to rotate to a position corresponding to the sealing plate 2, i.e., the rotating base 1 can drive the leak detection box 4 to rotate along the circumferential direction of the rotating base 1. During the rotation, the leak detection box 4 can be opposite to the position of the sealing plate 2. The position opposite can be a position opposite in the vertical direction or a position opposite in the horizontal direction, which can be designed according to actual requirements. The driving assembly 3 can drive the sealing plate 2 or the leak detection box 4 to move, so that the sealing plate 2 blocks the open end of the leak detection box 4. Specifically, the leak detection box 4 opposite to the position of the sealing plate 2 moves towards the sealing plate 2, or the sealing plate 2 moves towards the leak detection box 4 opposite to the position of the sealing plate 2. When the sealing plate 2 blocks the open end of the leak detection box 4, the leak detection cavity becomes a sealed cavity. The pressurizing device provides a gas pressure of 0.25±0.02 MPa to the leak detection cavity to test the battery liquid leakage. When the battery cell 5 leaks at the edge, the positive pressure will cause the aluminum plastic film to swell and deform.

[0035] Based on the battery cell 5 leak detection device provided by the utility model, when in use, a worker is located at one side of the rotating base 1. The rotating base 1 is rotated to allow the leak detection box 4 to be located at a position opposite to the worker. The worker loads the battery cells 5. The rotating base 1 drives the leak detection box 4 to rotate to a position corresponding to the sealing plate 2. The driving assembly 3 drives the sealing plate 2 or the leak detection box 4 to move, so that the sealing plate 2 blocks the open end of the leak detection box 4 to form a sealed cavity for pressurizing test to detect the liquid leakage of the battery cell 5. The battery cell 5 leak detection device in this design does not require the worker to move back and forth, thereby saving physical strength and increasing work efficiency. During the detection process, the leak detection box 4 loaded with the detected battery cell 5 is rotated to a position corresponding to the position of the worker, thereby facilitating the worker to load and unload the battery cell 5 and further increasing work efficiency.

[0036] In some embodiments, the method comprises Figures 1 to 4As shown, the rotating base 1 comprises a mounting frame 11 and a rotating disc 12 rotatably arranged on the mounting frame 11, and the rotating disc 12 is provided with a plurality of placing positions for placing the leak detection boxes 4 along the circumferential direction thereof.

[0037] In this design, the rotating disc 12 can rotate relative to the mounting frame 11 to drive the leak detection boxes 4 on the rotating disc 12 to rotate, so that the leak detection boxes 4 can be opposite to the positions of the sealing plates 2 or rotated to positions opposite to the workers, and the operation is convenient.

[0038] In some embodiments, the rotating shaft of the rotating disc 12 extends along the vertical direction, so that the rotating disc 12 rotates in the horizontal plane, at this time, the placing positions are formed on the top of the rotating disc 12, which facilitates the workers to place the leak detection boxes 4 on the placing positions, and facilitates the workers to place or take out the battery cells 5 from the leak detection boxes 4, thereby increasing the convenience of the workers' operation.

[0039] In some embodiments, in combination with Figure 3 and Figure 4 As shown, the top of the rotating disc 12 is provided with a plurality of partition plates 122 along the circumferential direction thereof, the partition plates 122 extend along the radial direction of the rotating disc 12, and one placing position is arranged between each two adjacent partition plates 122.

[0040] In this design, the top of the rotating disc 12 is divided into a plurality of regions by the partition plates 122, which facilitates the placement of the leak detection boxes 4.

[0041] In some embodiments, the partition plates 122 are three, the included angle between the two adjacent partition plates 122 is 120°, and correspondingly, the placing positions and the leak detection boxes 4 are also three, and the included angle between the two adjacent placing positions and the leak detection boxes 4 is 120°.

[0042] In some embodiments, the two adjacent partition plates 122 are connected by a rib plate 123, so as to further limit the size of the region of the placing position, and facilitate the installation and positioning of the leak detection boxes 4.

[0043] In some embodiments, in combination with Figures 3 to 5As shown, the middle part of the rotating disc 12 is provided with a positioning disc 13, the positioning disc 13 is arranged on the mounting frame 11, the rotating disc 12 can rotate relative to the positioning disc 13, the positioning disc 13 is provided with an elastic rod 131, the elastic rod 131 extends along the radial direction of the rotating disc 12. The elastic rod 131 includes a top rod and a spring, the spring applies a spring force to the top rod in the direction away from the axis of the positioning disc 13, so that the end of the top rod can extend out of the outer periphery of the positioning disc 13. The end of the elastic rod 131 (top rod) extends out of the outer periphery of the positioning disc 13, the inner side of the rotating disc 12 is provided with a positioning hole 121, the end of the elastic rod 131 (top rod) adopts a circular arc structure, so that it can extend into the positioning hole 121 or be pulled out of the positioning hole 121; when the end of the elastic rod 131 extends into the positioning hole 121, one of the leak detection boxes 4 is opposite to the position of the sealing plate 2.

[0044] In this design, the rotation positioning can be realized through the cooperation of the elastic rod 131 and the positioning hole 121, which ensures that the rotating disc 12 can rotate to the position where the leak detection box 4 is opposite to the sealing plate 2, and facilitates the subsequent buckling of the sealing plate 2 on the open end of the leak detection box 4.

[0045] In some embodiments, when the leak detection box 4 is three, the positioning hole 121 is also three, and the angle between the adjacent two positioning holes 121 is 120°, and each positioning hole 121 corresponds to one leak detection box 4.

[0046] In some embodiments, a handrail 14 is arranged between each adjacent two placement positions. In this design, the handrail 14 increases the convenience of the staff rotating the rotating disc 12. The design of the handrail 14 is not limited and can be designed according to actual needs.

[0047] In some embodiments, the rotating disc 12 can also be driven by electricity to ensure the accuracy of the positioning of the rotating disc 12.

[0048] In some embodiments, the leak detection box 4 and the rotating base 1 are detachably connected through the plug-in part 6.

[0049] In this design, the leak detection box 4 is convenient to disassemble and assemble, and at the same time, the leak detection box 4 is convenient to move away from the rotating base 1 towards the direction of the sealing plate 2.

[0050] In some embodiments, in combination with Figure 5 and Figure 7 As shown, the plug-in part 6 includes a plug-in column 61 arranged on the top of the rotating disc 12 and a plug-in hole 62 arranged on the bottom of the leak detection box 4, the plug-in column 61 can be inserted into the plug-in hole 62 to realize the positioning of the leak detection box 4 and make the leak detection box 4 move along the vertical direction relative to the rotating disc 12.

[0051] In some embodiments, there may be multiple insertion posts 61 and insertion holes 62, preferably two, to ensure positioning effectiveness.

[0052] In some implementations, combined Figures 1 to 3 As shown, the sealing plate 2 and the driving component 3 are arranged opposite each other on both sides of the rotating base 1. The driving component 3 can pass through the rotating base 1 to push the leak detection box 4 toward the sealing plate 2.

[0053] In this design, the drive component 3 is positioned opposite to the sealing plate 2, and the drive component 3 drives the leak detection box 4 to move in the direction of approaching or moving away from the sealing plate 2. This facilitates the setting of the drive component 3, reduces structural complexity, and makes full use of the design space.

[0054] In some implementations, reference continues. Figure 1 and Figure 3 The sealing plate 2 is supported on the top of the rotating base 1 by the bracket 9, and the drive assembly 3 is located at the bottom of the rotating base 1. At this time, the leak detection box 4 is located on the top of the rotating base 1, and the open end of the leak detection box 4 is located at the top of the leak detection box 4.

[0055] In this design, when the rotating base 1 drives the leak detection box 4 to rotate below the sealing plate 2, the driving component 3 can push the leak detection box 4 upward so that the sealing plate 2 can seal the open end of the leak detection box 4.

[0056] In some implementations, such as Figure 6 As shown, the drive assembly 3 includes a lifting column 31 and a drive component 32 for moving the lifting column 31 along the direction of approaching or moving away from the sealing plate 2. The mounting bracket 11 is provided with a vertical plate 36. The lifting column 31 and the vertical plate 36 slide in a vertical direction. The rotating base 1 is provided with a clearance hole 15 at the position corresponding to the lifting column 31.

[0057] Under normal conditions, the lifting column 31 is located below the rotating base 1 to avoid affecting its rotation. When the rotating base 1 rotates the leak detection box 4 to below the sealing plate 2, the driving component 32 drives the lifting column 31 to rise. After passing through the clearance hole 15, the lifting column 31 is supported at the bottom of the leak detection box 4 and pushes the leak detection box 4 upward. Figure 8 As shown, the leak test chamber 4 is sealed until the top open end abuts against the bottom end of the sealing plate 2.

[0058] In some implementations, reference continues. Figure 6The driving member 32 comprises a driving plate 321 and a telescopic member 322. The driving plate 321 is provided with an arc-shaped groove 3211. An end of the jacking column 31 away from the sealing plate 2 is slidingly arranged in the arc-shaped groove 3211. The telescopic member 322 is used to drive the driving plate 321 to move along a direction perpendicular to the extension direction of the jacking column 31, and drive the jacking column 31 to move along the axial direction of the jacking column 31 through the cooperation of the arc-shaped groove 3211 and the jacking column 31. The telescopic member 322 can be a pneumatic cylinder, a hydraulic cylinder or an electric push rod, which can be designed according to actual needs.

[0059] Specifically, one end of the arc-shaped groove 3211 extends vertically upward and has a certain slope, and the other end extends horizontally. The vertically extending part is below the horizontally extending part, and the vertically extending part and the horizontally extending part are arc-shapedly transitioned. An end of the jacking column 31 away from the sealing plate 2 is rotatably provided with a roller 312, which extends into the arc-shaped groove 3211. When the telescopic member 322 drives the driving plate 321 to move along the horizontal direction, the roller 312 will move along the slope of the vertically extending part of the arc-shaped groove 3211 to the horizontally extending part, thereby driving the jacking column 31 to move upward.

[0060] In this design, the horizontally arranged telescopic member 322 can drive the vertically arranged jacking column 31 to move along the vertical direction, reducing the space occupation in the vertical direction, reasonably utilizing the horizontal space, and thereby reducing the space occupation of the battery cell leakage testing equipment. In the testing state, the roller 312 of the jacking column 31 is located in the horizontally extending part of the arc-shaped groove 3211, ensuring the supporting effect of the jacking column 31.

[0061] In some embodiments, the mounting frame 11 is provided with a guide plate 33. The guide plate 33 is provided with a guide rail 34 along the driving direction of the telescopic member 322. The bottom of the driving plate 321 is provided with a bottom plate 35 which slidingly cooperates with the guide rail 34.

[0062] In this design, the guide rail 34 is provided to guide the movement of the driving plate 321, avoiding deviation.

[0063] In some embodiments, the driving assembly 3 further comprises a guide column 311 arranged on the jacking column 31. The guide column 311 is mounted on the jacking column 31. The rotating base 1 is provided with a guide hole 16 at a position corresponding to the guide column 311. The guide column 311 can move along the axial direction of the guide column 311 relative to the guide hole 16. The top of the guide column 311 protrudes out of the top of the jacking column 31 by more than 5 mm. The guide column 311 is first cooperated with the guide hole 16, so that the jacking column 31 is opposite to the avoiding hole 15 in the vertical direction, facilitating the positioning of the rotating disc 12, and ensuring that the jacking column 31 can smoothly pass through the avoiding hole 15.

[0064] In some embodiments, the bottom of the leak detection box 4 is provided with a first suction cup for negative pressure adsorption connection with the battery cell 5. In this design, the first suction cup can be adsorbed on the bottom of the battery cell 5, which facilitates the testing of the top and the periphery of the battery cell 5, and can increase the positioning effect of the battery cell 5 in the leak detection box 4. The first negative pressure pipeline and the first negative pressure pump body can be provided on the mounting frame 11 or the bottom of the turntable 12, and can be designed according to actual needs. When the first negative pressure pipeline and the first negative pressure pump body are provided on the mounting frame 11, the phenomenon of winding of the first negative pressure pipeline is avoided, and a synchronous disc can be provided on the mounting frame 11, the synchronous disc rotates synchronously with the turntable 12, the first negative pressure pump body is provided on the synchronous disc, or the winding problem of the first negative pressure pipeline is solved by forward and reverse rotation of the turntable 12.

[0065] In some embodiments, the sealing plate 2 is provided with a second suction cup for negative pressure adsorption connection with the battery cell 5. In this design, the second suction cup can be adsorbed on the top of the battery cell 5, which facilitates the testing of the bottom and the periphery of the battery cell 5. The design position of the second suction cup is not limited, and can be selected according to actual needs.

[0066] During operation, when the rotating base 1 drives the leak detection box 4 to rotate to a position corresponding to the sealing plate 2, the leak detection box 4 is moved upward by the driving assembly 3, so that the sealing plate 2 blocks the open end of the leak detection box 4. At this time, the first suction cup adsorbs the battery cell 5, and the pressurizing equipment injects 0.25±0.02Mpa air into the leak detection cavity, and maintains for two seconds. The first suction cup stops working, the second suction cup adsorbs the top of the battery cell 5, and the pressurizing equipment injects 0.25±0.02Mpa air into the leak detection cavity, and maintains for two seconds. The leak detection operation of the battery cell 5 can be completed, which is convenient to operate.

[0067] In some embodiments, as shown in Figure 8 The sealing plate 2 is sealingly connected to the open end of the leak detection box 4 through the sealing element 7. The sealing element 7 can be a sealing ring or the like to ensure the sealing effect of the outer periphery of the open end of the leak detection box 4.

[0068] In some embodiments, as shown in Figure 1 The battery cell leak detection device further comprises a cover body 8, which covers the outer periphery of the sealing plate 2, the driving assembly 3 and part of the rotating base 1 to isolate impurities.

[0069] It has to be noted that, in the present document, relational terms are intended only to convey a relative position and that the use of these terms is intended to include the negative of the state (e.g. "a first element does not include a second element", "a first element does not exclude a second element") and the removal or addition of the elements between two relativity linked elements (e.g. "a first element between a second element and a third element" or "second element and a third element between a first element").

[0070] The foregoing is merely illustrative of the principles of the application and various modifications can be made by those skilled in the art without departing from the spirit and scope of the application. The above description is embodied in the form of specific examples. The application described and claimed herein can be modified and varied as desired. Such alternate, additional, and / or equivalent implementations should be considered as within the scope of the present application as defined in the claims.

Claims

1. An electrode chip leak detection apparatus, characterized by comprising: The utility model relates to a kind of leak detection box for battery, including rotating base (1), sealing plate (2), drive assembly (3) and multiple for placing the measuring leakage box (4) of electric core (5) in the rotating base (1), the measuring leakage box (4) one side is open, the sealing plate (2) is equipped with the test port for being connected with pressurizing equipment; Wherein, the rotating base (1) can drive the measuring leakage box (4) to rotate to the position corresponding with the sealing plate (2), the drive assembly (3) can drive the sealing plate (2) or the measuring leakage box (4) moves, so that the sealing plate (2) blocks the open end of the measuring leakage box (4).

2. The cell leak testing apparatus according to claim 1, characterized by, The rotating base (1) includes mounting bracket (11) and rotating disc (12) rotatingly arranged on the mounting bracket (11), and the rotating disc (12) is provided with a plurality of placement positions for placing the measuring leakage box (4) along the circumferential direction thereof.

3. The cell leak testing apparatus according to claim 2, characterized by, The middle part of the rotating disc (12) is provided with a positioning disc (13), and the rotating disc (12) can rotate relative to the positioning disc (13). The positioning disc (13) is provided with an elastic rod (131), and the end of the elastic rod (131) extends out of the outer periphery of the positioning disc (13). The inner side of the rotating disc (12) is provided with a positioning hole (121). When the end of the elastic rod (131) extends into the positioning hole (121), one of the measuring leakage boxes (4) is opposite to the position of the sealing plate (2).

4. The cell leak testing apparatus of claim 2, wherein, One handrail (14) is arranged between every two adjacent placement positions.

5. The cell leak testing apparatus of claim 1, wherein, The measuring leakage box (4) and the rotating base (1) are detachably connected through a plug-in connector (6). And / or, the sealing plate (2) is provided with a sealing element (7), and the sealing plate (2) is sealingly connected with the open end of the measuring leakage box (4) through the sealing element (7).

6. The cell leak testing apparatus of claim 1, wherein, The sealing plate (2) and the drive assembly (3) are oppositely arranged on both sides of the rotating base (1), and the drive assembly (3) can push the measuring leakage box (4) to move towards the sealing plate (2) through the rotating base (1).

7. The cell leak testing apparatus of claim 6, wherein, The drive assembly (3) includes a jacking column (31) and a driving element (32) for driving the jacking column (31) to move along the direction close to or away from the sealing plate (2). The rotating base (1) is provided with an avoiding hole (15) at the position corresponding to the jacking column (31).

8. The cell leak testing apparatus of claim 7, wherein, The driving element (32) includes a driving plate (321) and a telescopic element (322). The driving plate (321) is provided with an arc-shaped groove (3211), and the end of the jacking column (31) away from the sealing plate (2) is slidingly arranged in the arc-shaped groove (3211). The telescopic element (322) is used for driving the driving plate (321) to move along the direction perpendicular to the extension direction of the jacking column (31), and driving the jacking column (31) to move along the axial direction of the jacking column (31) through the cooperation of the arc-shaped groove (3211) and the jacking column (31).

9. The cell leak testing apparatus of claim 7, wherein, The driving assembly (3) further comprises a guide column (311) arranged on the jacking column (31), the rotating base (1) is provided with a guide hole (16) at a position corresponding to the guide column (311), and the guide column (311) can move relative to the guide hole (16) along the axial direction of the guide column (311).

10. The cell leak testing apparatus of claim 1, wherein, The bottom of the leak detection box (4) is provided with a first suction disc for negative pressure adsorption connection with the battery cell (5); And / or, the sealing plate (2) is provided with a second suction disc for negative pressure adsorption connection with the battery cell (5).

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