Device and equipment for testing side voltage of battery cell

Abstract

The utility model discloses a cell edge voltage testing device and testing equipment. The cell edge voltage testing device comprises a bearing plate, a first electric conductor, a second electric conductor and a voltage tester. The bearing plate is provided with a containing groove, and the containing groove is used for containing a battery cell. The first conductor is arranged on one side of the bearing plate. The second electric conductor and the first electric conductor are oppositely arranged, the second electric conductor can move towards the direction of the first electric conductor so as to push the battery cell in the accommodating groove to move towards the direction of the first electric conductor, so that the second electric conductor abuts against one side of the battery cell, the first electric conductor abuts against the other side of the battery cell, and the second electric conductor is electrically connected with one side of the battery cell; and the first conductor is electrically connected with the other side of the battery cell. The voltage tester is electrically connected with the first electric conductor and the second electric conductor and measures the voltage of the battery cell. According to the testing device, the testing yield of the edge voltage of the battery cell can be improved, and the safety and quality of the battery cell are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery test, especially to a kind of testing device and testing equipment of cell edge voltage. BACKGROUND

[0002] The outer package layer of soft package lithium battery is usually called aluminum plastic film. The edge voltage test is used to detect whether the inner layer of aluminum plastic film is damaged. The voltage between the tab of positive and negative electrode of test cell and aluminum plastic film is tested.

[0003] In related technology, the edge voltage test of lithium battery is generally performed after the air extraction and edge sealing process of the cell. The air bag is pierced by bayonet, and the positive and negative tabs are contacted by probe. The probe and bayonet are connected to the tester to measure the edge voltage.

[0004] When the chucking hand of suction cup grabs the cell and places it in the test station, the position of the cell in the test station may be offset, which causes the bayonet to pierce off-center, resulting in poor cell test. Even the cell body may be pierced, which poses a safety hazard. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to provide a testing device and testing equipment for cell edge voltage, which aims to solve the technical problem that the position of the cell in the test station may be offset in related technology, causing the bayonet to pierce off-center and resulting in poor cell test.

[0006] In order to achieve the above-mentioned utility model purpose, the utility model proposes a testing device for cell edge voltage in the first aspect.

[0007] A testing device for cell edge voltage, comprising:

[0008] A bearing plate provided with a receiving groove for accommodating the cell;

[0009] A first conductor provided on one side of the bearing plate;

[0010] A second conductor oppositely arranged with the first conductor, which can move towards the first conductor to push the cell in the receiving groove to move towards the first conductor, so that the second conductor abuts against one side of the cell, the first conductor abuts against the other side of the cell, and the second conductor is electrically connected to one side of the cell, and the first conductor is electrically connected to the other side of the cell; and

[0011] A voltage tester electrically connected to the first conductor and the second conductor respectively, and measuring the voltage of the cell.

[0012] In one of the embodiments, the testing device further comprises a tab testing mechanism electrically connected with the voltage tester, the tab testing mechanism is arranged above the bearing plate, and the testing device is capable of moving towards the direction close to the accommodation groove and electrically connected with the tab of the battery cell.

[0013] In one of the embodiments, the tab testing mechanism comprises a moving plate, a third conductor and an elastic member, the moving plate is capable of moving towards the direction close to the accommodation groove, the third conductor is electrically connected with the voltage tester, the third conductor is movably arranged on the moving plate, one end of the elastic member is connected with the moving plate, and the other end of the elastic member is connected with one end of the third conductor away from the moving plate.

[0014] In one of the embodiments, the testing device comprises a first driving member and a first insulating plate, the first insulating plate is connected with the first driving member, and the second conductor is arranged on the first insulating plate, the first driving member is used to drive the first insulating plate to move towards the direction close to the first conductor, so that the second conductor moves towards the direction close to the first conductor.

[0015] In one of the embodiments, the testing device further comprises a limiting member, the limiting member is arranged on the side of the bearing plate away from the first conductor, and the limiting member is arranged opposite to the first insulating plate;

[0016] When the first insulating plate abuts against the limiting member, the second conductor abuts against one side of the battery cell, and the first conductor abuts against the other side of the battery cell.

[0017] In one of the embodiments, the second conductor is detachably connected with the first insulating plate.

[0018] In one of the embodiments, the material of the first conductor is conductive silicone rubber; and / or

[0019] The material of the second conductor is conductive silicone rubber.

[0020] The utility model discloses a second aspect proposes a kind of battery cell edge voltage testing equipment, including conveyer belt, suction cup assembly and above-mentioned battery cell edge voltage testing device, the testing device is arranged to two, the conveyer belt is between two described testing device, the conveyer belt is used to convey battery cell, the suction cup assembly is used to suck the battery cell on the conveyer belt, and the battery cell is transported to the accommodation groove of the testing device.

[0021] In one of the embodiments, the testing device further comprises a truss, a sliding member and a second driving member, the truss has a sliding portion arranged in a horizontal direction and located above the bearing plate of the testing device and the conveying belt, the sliding member is slidingly arranged on the sliding portion, and the second driving member is connected with the sliding member and the suction disc assembly respectively, and the second driving member is used to drive the suction disc assembly to move in a vertical direction.

[0022] In one of the embodiments, the suction disc assembly comprises a mounting plate and a plurality of suction discs arranged on the mounting plate, and the mounting plate is provided with an air inlet channel.

[0023] In one of the embodiments, the mounting plate is provided with an air inlet opening, the air inlet opening is communicated with the air inlet channel, and an air pipe joint is arranged on the inner side wall of the air inlet opening.

[0024] Advantages:

[0025] The testing device for the edge voltage of the battery cell in the utility model, the battery cell is accommodated in the accommodation groove. The first conductor is arranged on one side of the bearing plate. The second conductor is arranged opposite to the first conductor, and the second conductor can move towards the first conductor to push the battery cell in the accommodation groove to move towards the first conductor, so that the second conductor abuts against one side of the battery cell, and the first conductor abuts against the other side of the battery cell. That is, the first conductor corresponds to the fixed end of the battery cell, and the second conductor corresponds to the sliding end of the battery cell. After the battery cell is fixed at the preset position through the cooperation of the first conductor and the second conductor, the second conductor is electrically connected with one side of the battery cell, and the first conductor is electrically connected with the other side of the battery cell. The voltage tester can measure the voltage of the battery cell through the first conductor and the second conductor. The testing device can position the battery cell at the preset position, and does not need to pierce the air bag of the battery cell with a bayonet, so as to avoid the situation that the bayonet causes the battery cell to be tested badly and pierced, thereby improving the test yield of the edge voltage of the battery cell and improving the safety and quality of the battery cell. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structure schematic view of the testing device for the edge voltage of the battery cell in an embodiment of the utility model.

[0027] Figure 2 It is a structure schematic view of the testing device for the edge voltage of the battery cell in an embodiment of the utility model.

[0028] Figure 3 It is another angle structure schematic view of the testing device for the edge voltage of the battery cell in an embodiment of the utility model.

[0029] Figure 4It is a structural schematic view of the test state of the test device of one embodiment of the utility model.

[0030] Figure 5 It is Figure 2 The schematic view of part structure.

[0031] Figure 6 It is a structural schematic view of the bearing plate of one embodiment of the utility model.

[0032] Figure 7 It is a structural schematic view of the sucking disc assembly of one embodiment of the utility model.

[0033] Figure 8 It is the internal structure diagram of the sucking disc assembly of one embodiment of the utility model.

[0034] Among them:

[0035] 10, test device;

[0036] 100, bearing plate; 110, accommodating groove; 111, electric core;

[0037] 200, first conductor; 210, second insulating plate;

[0038] 300, second conductor; 310, first driving part; 320, first insulating plate; 330, limiting part;

[0039] 400, voltage tester;

[0040] 500, support frame; 510, code scanner;

[0041] 600, tab testing mechanism; 610, moving plate; 620, third conductor; 630, elastic part; 640, third driving part;

[0042] 700, conveying belt;

[0043] 800, sucking disc assembly; 810, mounting plate; 811, air inlet channel; 812, air inlet; 813, air pipe joint; 820, sucking disc;

[0044] 910, truss; 911, sliding part; 920, sliding part; 930, second driving part.

[0045] The utility model discloses the realization, functional characteristics and advantages will be further explained with reference to the drawings combining embodiment. Specific implementation

[0046] It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0047] In the description of the utility model, it is necessary to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relation based on the orientation or positional relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0048] In the description of the utility model, it should be explained that, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0049] In the utility model, unless otherwise specifically defined and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0050] As Figure 1 , Figure 2 and Figure 6As shown, in some embodiments, a test device 10 for testing edge voltage of an electric cell includes a bearing plate 100, a first electric conductor 200, a second electric conductor 300, and a voltage tester 400. The bearing plate 100 is provided with a receiving groove 110 for receiving an electric cell 111. The first electric conductor 200 is arranged on one side of the bearing plate 100. The second electric conductor 300 is arranged opposite to the first electric conductor 200 and is movable towards the first electric conductor 200 to push the electric cell 111 in the receiving groove 110 to move towards the first electric conductor 200, so that the second electric conductor 300 abuts against one side of the electric cell 111, the first electric conductor 200 abuts against the other side of the electric cell 111, and the second electric conductor 300 is electrically connected to the one side of the electric cell 111, and the first electric conductor 200 is electrically connected to the other side of the electric cell 111. The voltage tester 400 is electrically connected to the first electric conductor 200 and the second electric conductor 300 respectively and measures the voltage of the electric cell 111.

[0051] During testing, the second electric conductor 300 moves towards the first electric conductor 200 to push the electric cell 111 in the receiving groove 110 to move towards the first electric conductor 200, so that the second electric conductor 300 abuts against one side of the electric cell 111, and the first electric conductor 200 abuts against the other side of the electric cell 111. That is, the first electric conductor 200 corresponds to the fixed end of the electric cell 111, and the second electric conductor 300 corresponds to the sliding end of the electric cell 111. After the electric cell 111 is fixed at a preset position by cooperation of the first electric conductor 200 and the second electric conductor 300, the first electric conductor 200 and the second electric conductor 300 clamp the electric cell 111, the second electric conductor 300 is electrically connected to one side of the electric cell 111, and the first electric conductor 200 is electrically connected to the other side of the electric cell 111. The voltage tester 400 can measure the voltage of the electric cell 111 through the first electric conductor 200 and the second electric conductor 300. The test device 10 can position the electric cell 111 at a preset position without piercing the gas bag of the electric cell with a bayonet, thereby avoiding the case that the bayonet causes poor test of the electric cell and pierces the body of the electric cell, so as to improve the test yield of the edge voltage of the electric cell and improve the safety and quality of the electric cell.

[0052] Specifically, the test device 10 is used for testing the voltage of a soft-pack lithium battery, and specifically for testing the edge voltage of the electric cell. The edge voltage of the electric cell refers to the voltage difference between the internal pole piece of the electric cell and the shell (or current collector) of the electric cell, and specifically can be the voltage of the aluminum layer between the positive electrode lug and the aluminum plastic film of the battery. It is an important parameter for measuring the performance and health status of the electric cell. The voltage tester 400 is specifically an edge voltage tester. The model of the edge voltage tester can be RJ6921.

[0053] Specifically, the material of the bearing plate 100 can be an insulating material, such as bakelite or the like.

[0054] As Figure 1As shown, in some embodiments, the testing device 10 further comprises a support frame 500. The support frame 500 is provided with the bearing plate 100 and the voltage tester 400. The support frame 500 can be an aluminum profile support.

[0055] As shown, in particular, the support frame 500 is provided with a code scanner 510. The code scanner 510 is used to scan the code of the battery cell 111 and record the test record of the battery cell 111. Figure 1 Figure 2 As shown, in particular, the support frame 500 is provided with a code scanner 510. The code scanner 510 is used to scan the code of the battery cell 111 and record the test record of the battery cell 111.

[0056] In particular, the first conductive body 200 can be in a plate structure. The plate structure can increase the contact area of the first conductive body 200 with one side of the battery cell 111, so that the battery cell 111 can be better fixed by the first conductive body 200 during the test, and ensure that the first conductive body 200 and the battery cell 111 are in stable contact. When the second conductive body 300 pushes the battery cell 111 to contact the first conductive body 200, the larger contact area can provide more uniform support force to prevent the battery cell 111 from shifting or shaking during the test.

[0057] In particular, the first conductive body 200 can be in a plate structure. The plate structure can increase the contact area of the first conductive body 200 with one side of the battery cell 111, so that the battery cell 111 can be better fixed by the first conductive body 200 during the test, and ensure that the first conductive body 200 and the battery cell 111 are in stable contact. When the second conductive body 300 pushes the battery cell 111 to contact the first conductive body 200, the larger contact area can provide more uniform support force to prevent the battery cell 111 from shifting or shaking during the test.

[0058] The conductive silicone rubber is made of silicone rubber as base glue, and conductive fillers, cross-linking agents, etc. are added to the base glue to be compounded and vulcanized. The commonly used glue is methyl vinyl silicone rubber. The commonly used conductive fillers include acetylene carbon black, carbon fiber, super-conductive carbon black, graphite, copper powder, silver powder, aluminum powder, and zinc powder, etc.

[0059] In particular, the first conductive body 200 is provided with a terminal at one end close to the voltage tester 400. The terminal is electrically connected to the voltage tester 400 through a wire.

[0060] In some embodiments, the first conductive body 200 and the second conductive body 300 are arranged in parallel.

[0061] In particular, the second conductive body 300 is provided with a terminal at one end close to the voltage tester 400. The terminal is electrically connected to the voltage tester 400 through a wire.

[0062] ​Specifically, the second conductor 300 can be in a plate structure to increase the contact area of the second conductor 300 with the other side of the battery cell 111.

[0063] Specifically, the second conductor 300 can be made of conductive silicone rubber to ensure good contact of the second conductor 300 with the other side of the battery cell 111.

[0064] As shown in Figure 2 , Figure 3 and Figure 5 , in some embodiments, the test device 10 further comprises a second insulating plate 210. The second insulating plate 210 can be arranged on the support frame 500. The second insulating plate 210 is connected with the first conductor 200, and the second insulating plate 210 has the functions of fixing and insulating the first conductor 200.

[0065] Specifically, the second insulating plate 210 is detachably connected with the first conductor 200.

[0066] More specifically, the second insulating plate 210 is screw-connected with the first conductor 200.

[0067] As shown in Figure 2 , in some embodiments, the test device 10 further comprises a tab testing mechanism 600. The tab testing mechanism 600 is electrically connected with the voltage tester 400, and the tab testing mechanism 600 is arranged above the bearing plate 100. The test device 10 can move towards the direction of the accommodation groove 110 and be electrically connected with the tab of the battery cell 111. The voltage tester 400 can measure the voltage of the positive and negative tabs of the battery cell 111. The voltage between the positive and negative tabs of the battery cell 111 and the aluminum plastic film is measured to determine whether the inner layer of the aluminum plastic film is damaged and short-circuited.

[0068] As shown in Figure 2 , specifically, the tab testing mechanism 600 comprises a moving plate 610, a third conductor 620 and an elastic member 630. The moving plate 610 can move towards the direction of the accommodation groove 110. The third conductor 620 is electrically connected with the voltage tester 400. The third conductor 620 is movably arranged on the moving plate 610. One end of the elastic member 630 is connected with the moving plate 610, and the other end is connected with the end of the third conductor 620 away from the moving plate 610.

[0069] During testing, the moving plate 610 moves towards the direction of the accommodation groove 110 so that the third conductor 620 is in contact with and electrically connected with the tab. The direction of the moving plate 610 towards the direction of the accommodation groove 110 is defined as the vertically downward direction. After the third conductor 620 is in contact with the tab, the moving plate 610 continues to move in the vertically downward direction, and the third conductor 620 moves relative to the moving plate 610. The end of the third conductor 620 away from the tab protrudes from the moving plate 610, as shown in Figure 4The elastic member 630 is compressed and deformed, and the elastic member 630 can provide an elastic force to the third conductive body 620, so that the third conductive body 620 can maintain appropriate pressure when contacting the tab of the battery cell 111, and ensure that the third conductive body 620 has good electrical connection with the tab, and will not cause excessive pressure to the tab and damage the tab.

[0070] As shown in FIG. 6, the tab testing mechanism 600 further includes a third driving member 640. The third driving member 640 is arranged on the support frame 500, and the third driving member 640 is connected with the moving plate 610. The third driving member 640 is used to drive the moving plate 610 to move towards the direction of the accommodating groove 110. That is, the third driving member 640 is used to drive the moving plate 610 to move up or down along the vertical direction. Figure 3

[0071] Specifically, the material of the moving plate 610 can be an insulating material, such as bakelite.

[0072] Specifically, the material of the third conductive body 620 can be brass.

[0073] Specifically, the third conductive body 620 can be electrically connected with the voltage tester 400 through a terminal and a wire.

[0074] Specifically, the elastic member 630 can be a spring.

[0075] Specifically, the third conductive body 620 can be a sliding pin.

[0076] As shown in FIG. 6, the tab testing mechanism 600 further includes a third driving member 640. The third driving member 640 is arranged on the support frame 500, and the third driving member 640 is connected with the moving plate 610. The third driving member 640 is used to drive the moving plate 610 to move towards the direction of the accommodating groove 110. That is, the third driving member 640 is used to drive the moving plate 610 to move up or down along the vertical direction. Figure 2 Figure 3 As shown in FIG. 6, the tab testing mechanism 600 further includes a third driving member 640. The third driving member 640 is arranged on the support frame 500, and the third driving member 640 is connected with the moving plate 610. The third driving member 640 is used to drive the moving plate 610 to move towards the direction of the accommodating groove 110. That is, the third driving member 640 is used to drive the moving plate 610 to move up or down along the vertical direction.

[0077] Specifically, the first driving member 310 can be a pneumatic cylinder.

[0078] Specifically, the first insulating plate 320 can be an L-shaped plate.

[0079] Specifically, the second conductive body 300 and the first insulating plate 320 are detachably connected.

[0080] More specifically, the second conductive body 300 and the first insulating plate 320 can be bolted.

[0081] As shown in FIG. 6, the tab testing mechanism 600 further includes a third driving member 640. The third driving member 640 is arranged on the support frame 500, and the third driving member 640 is connected with the moving plate 610. The third driving member 640 is used to drive the moving plate 610 to move towards the direction of the accommodating groove 110. That is, the third driving member 640 is used to drive the moving plate 610 to move up or down along the vertical direction. Figure 5 ​​As shown, in some embodiments, the testing device 10 further includes a limiting member 330, which is disposed on the side of the support plate 100 away from the first conductor 200, and is disposed opposite to the first insulating plate 320. When the first insulating plate 320 abuts against the limiting member 330, the second conductor 300 abuts against one side of the battery cell 111, and the first conductor 200 abuts against the other side of the battery cell 111.

[0082] It should be noted that the cooperation between the limiting member 330 and the first insulating plate 320 can accurately determine the position of the battery cell 111 on the receiving groove 110. This setting can ensure that the battery cell 111 is in the preset position during each test, making the contact position between the second conductor 300 and the first conductor 200 and the battery cell 111 more accurate.

[0083] When the first insulating plate 320 abuts against the limiting member 330, it simultaneously ensures that the second conductor 300 abuts against one side of the battery cell 111 and the first conductor 200 abuts against the other side of the battery cell 111. This precise positioning structure avoids poor contact between the first conductor 200 and the second conductor 300 and the battery cell 111 due to inaccurate positioning of the battery cell 111, thereby ensuring the reliability of the electrical connection between the first conductor 200 and the second conductor 300 and the battery cell 111 during testing.

[0084] Specifically, the limiting member 330 can be a stop strip. The stop strip is provided along the length direction of the bearing plate 100. The limiting member 330 can be made of polyurethane, which has a certain degree of elasticity but is not too soft.

[0085] like Figure 1 As shown, in another embodiment, a battery cell edge voltage testing device includes a conveyor belt 700, a suction cup assembly 800, and a battery cell edge voltage testing device 10. Two testing devices 10 are configured, and the conveyor belt 700 is located between the two testing devices 10. The conveyor belt 700 is used to transport battery cells 111, and the suction cup assembly 800 is used to pick up the battery cells 111 on the conveyor belt and transport the battery cells 111 into the receiving slot 110 of the testing device 10.

[0086] It should be noted that by setting up the conveyor belt 700, the battery cell 111 can move automatically in the testing equipment, eliminating the need for manual handling of the battery cell 111, thus improving the automation level of the testing process and reducing the errors and inefficiencies that may be caused by manual operation.

[0087] By setting two test devices 10, two battery cells 111 can be tested at the same time. The automatic conveying and feeding function of the battery cell 111 realized by the combination of the conveying belt 700 and the suction cup assembly 800 enables the test equipment to test more battery cells 111 in a unit of time. For example, when one battery cell 111 is being tested in one of the test devices 10, the suction cup assembly 800 can simultaneously place another battery cell 111 in the other test device 10 for testing, greatly improving the test efficiency.

[0088] Specifically, the conveying belt 700 can be arranged on the support frame 500.

[0089] As shown in Figure 1 some embodiments, the test equipment further comprises a truss 910, a sliding member 920, and a second driving member 930. The truss 910 has a sliding portion 911 arranged in a horizontal direction and located above the test device 10 and the conveying belt 700. The sliding member 920 is slidingly arranged on the sliding portion 911. The second driving member 930 is connected with the sliding member 920 and the suction cup assembly 800, respectively, and is used to drive the suction cup assembly 800 to move in a vertical direction. Specifically, the truss 910 can be a gantry truss 910.

[0090] It should be noted that the cylinder drives the sliding member 920 to slide on the horizontally arranged sliding portion 911, so that the sliding member 920 drives the suction cup assembly 800 and the second driving member 930 to move in the horizontal direction, so that the suction cup assembly 800 can move in the horizontal area above the conveying belt 700 and the test device 10, and can be accurately positioned to the position of the battery cell 111 on the conveying belt 700 for suction, and can accurately place the battery cell 111 into the accommodation groove 110 of the test device 10. The second driving member 930 drives the suction cup assembly 800 to move in the vertical direction, realizing the up-down movement of the suction cup assembly 800. This enables the suction cup assembly 800 to be lowered to the conveying belt 700 to suction the battery cell 111, then be raised and moved above the test device 10, and then be lowered to place the battery cell 111 into the accommodation groove 110.

[0091] As shown in Figure 7 and Figure 8 specifically, the suction cup assembly 800 comprises a mounting plate 810 and a plurality of suction cups 820. The plurality of suction cups 820 are arranged on the mounting plate 810. The mounting plate 810 is provided with an air inlet passage 811. The plurality of suction cups 820 are in communication with the air inlet passage 811.

[0092] Specifically, the mounting plate 810 is provided with an air inlet 812, which is in communication with the air inlet passage 811. The air inlet 812 is provided with an air pipe joint 813 on the inner side wall.

[0093] The suction disc assembly 800 is ventilated only through the air inlet 812 and the air pipe joint 813, frequent adjustment of each suction disc 820 can be avoided, the suction force of each suction disc 820 is uniform, and the battery cell 111 is prevented from falling during the process of being gripped by the suction disc 820.

[0094] Specifically, the plurality of suction discs 820 are threadedly installed on the mounting plate 810.

[0095] The above is only the preferred embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A device for testing the voltage of a cell edge, characterized by, The test device comprises a bearing plate, a first conductor, a second conductor, and a voltage tester. The bearing plate is provided with a receiving groove for accommodating the battery cell. The first conductor is arranged on one side of the bearing plate. The second conductor is arranged opposite to the first conductor and can move towards the first conductor to push the battery cell in the receiving groove to move towards the first conductor, so that the second conductor abuts against one side of the battery cell, the first conductor abuts against the other side of the battery cell, and the second conductor and the first conductor are electrically connected with the battery cell. The voltage tester is electrically connected with the first conductor and the second conductor respectively and measures the voltage of the battery cell.

2. The test device of claim 1, wherein, The test device further comprises a tab testing mechanism electrically connected with the voltage tester, which is arranged above the bearing plate.

3. The test device of claim 2, wherein, The test device can move towards the receiving groove and is electrically connected with the tab of the battery cell.

4. The test device of claim 1, wherein, The tab testing mechanism comprises a moving plate, a third conductor, and an elastic member.

5. The test device of claim 4, wherein, The moving plate can move towards the receiving groove. The third conductor is electrically connected with the voltage tester and can move through the moving plate.

6. The test device of claim 4, wherein, One end of the elastic member is connected with the moving plate and the other end is connected with one end of the third conductor away from the moving plate.

7. An apparatus for testing cell edge voltage, the apparatus comprising: The test device comprises a first driving member and a first insulating plate.

8. The test apparatus of claim 7, wherein, The first insulating plate is connected with the first driving member and the second conductor is arranged on the first insulating plate. The first driving member drives the first insulating plate to move towards the first conductor so that the second conductor moves towards the first conductor. The test device further comprises a limiting member arranged on the side of the bearing plate away from the first conductor. The second conductor abuts against one side of the battery cell and the first conductor abuts against the other side of the battery cell when the first insulating plate abuts against the limiting member. The second conductor is detachably connected with the first insulating plate. The test device comprises a conveyor belt, a suction cup assembly, and the battery cell edge voltage testing device of any one of claims 1-6. The test device is arranged in two and the conveyor belt is located between the two test devices. The conveyor belt is used to convey the battery cell. The suction cup assembly is used to suck the battery cell on the conveyor belt and deliver the battery cell into the receiving groove of the test device. The test device further comprises a truss, a sliding member, and a second driving member. The truss has a sliding part arranged in the horizontal direction and located above the bearing plate of the test device and the conveyor belt. The sliding member is slidingly arranged on the sliding part. The second driving member is connected with the sliding member and the suction cup assembly respectively and is used to drive the suction cup assembly to move in the vertical direction.

9. The test apparatus of claim 7, wherein, The suction cup assembly comprises a mounting plate and a plurality of suction cups arranged on the mounting plate, and an air inlet channel is formed in the mounting plate, and the plurality of suction cups are in communication with the air inlet channel.

10. The test apparatus of claim 9, wherein, The mounting plate is provided with an air inlet, the air inlet is in communication with the air inlet channel, and an air pipe joint is arranged on the inner side wall of the air inlet.

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