Battery cell OCV testing and tab cutting integrated device

Abstract

The utility model discloses a battery cell OCV testing and tab cutting integrated device which comprises a rack, a conveying mechanism, a telescopic executing mechanism, a testing mechanism and a cutting mechanism, the conveying mechanism is provided with a conveying channel, the conveying channel is suitable for placing a battery cell, and a testing station and a cutting station are sequentially arranged in the conveying direction of the conveying channel; the telescopic executing mechanism is installed on the rack and located on one side of the conveying channel, a telescopic end is arranged on the telescopic executing mechanism, and a fixed transverse rod is installed at the telescopic end; the testing mechanism is provided with a pair of probes, and the pair of probes is installed on the fixed cross rod. And when the conveying mechanism drives the battery cell to reach the test station, the test mechanism is suitable for performing OCV test through contact between the pair of probes and corresponding positive and negative tabs of the battery cell. The OCV testing and positive tab cutting machine can simultaneously realize two processes of OCV testing and positive tab cutting on a battery cell.

Description

Technical Field

[0001] The utility model relates to an integrated device for cell OCV testing and tab cutting, belonging to the technical field of lithium battery production equipment. Background Art

[0002] At present, before the production of battery modules, the battery cells need to be OCV tested and the positive lugs need to be switched. These two steps are usually performed independently in production. During the OCV test, the positive and negative lugs of the battery cells need to be connected for testing. Before the positive lug is switched, the positive lug needs to be shortened to a certain length before the switch can be performed because the positive lug is too long.

[0003] After searching the prior art, it was found that a Chinese patent with announcement number CN218917579U disclosed an OCV test structure for square shell battery cells. The patent implemented OCV testing of the battery cells, but during use, it was found that the positive electrode ear needed to be transferred after the OCV test of the battery cells. The two processes were carried out separately, resulting in lower production efficiency. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide an integrated device for cell OCV testing and tab cutting, which can simultaneously realize the two processes of OCV testing and positive tab cutting for the cell.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a battery cell OCV test and tab cutting integrated device, comprising:

[0006] frame;

[0007] A conveying mechanism, wherein a conveying channel is provided on the conveying mechanism, and the conveying channel is suitable for placing battery cells, and a testing station and a cutting station are sequentially provided along the conveying direction of the conveying channel;

[0008] A telescopic actuator, the telescopic actuator is mounted on the frame and is located at one side of the conveying passage. The telescopic actuator is provided with a telescopic end, and a fixed cross bar is mounted on the telescopic end;

[0009] A testing mechanism, wherein a pair of probes are provided on the testing mechanism and the pair of probes are mounted on the fixed cross bar;

[0010] When the conveying mechanism drives the battery cell to the testing station, the testing mechanism is suitable for contacting the corresponding positive and negative tabs of the battery cell through a pair of probes to perform an OCV test;

[0011] A cutting mechanism, wherein the cutting mechanism is provided with a cutting knife, and the cutting knife is mounted on the fixed cross bar;

[0012] When the conveying mechanism drives the battery cell to the cutting station, the cutting mechanism is suitable for contacting the positive electrode ear of the battery cell through the cutting knife to cut the positive electrode ear;

[0013] The telescopic actuator is suitable for synchronously driving a pair of the probes and the cutter to move up and down, and making the pair of the probes contact the corresponding positive and negative tabs of the battery cell at the testing station, and making the cutter contact the positive tab of the battery cell at the cutting station.

[0014] Furthermore, a specific structure of a conveying mechanism is provided, and the conveying mechanism comprises:

[0015] A pair of conveying drive rollers, the pair of conveying drive rollers are rotatably mounted on the frame;

[0016] A conveyor belt, the conveyor belt is wrapped around the outer circumference of a pair of conveying drive rollers;

[0017] A conveying driving member, wherein the output end of the conveying driving member is coaxially connected to one of a pair of conveying drive rollers, and the conveying driving member is suitable for driving the conveying drive roller to make the conveyor belt run.

[0018] Furthermore, in order to support the conveyor belt stably, the frame also includes a support seat, which is located between a pair of conveying drive rollers. The conveyor belt forms an upper conveying section on the support seat, and the support seat is suitable for supporting the upper conveying section of the conveyor belt.

[0019] Furthermore, in order to limit the position of the battery cell on the conveyor belt, a limiting assembly is also provided on the conveyor belt, and the limiting assembly includes at least one pair of positioning block groups, and the positioning block groups are suitable for limiting the position of the battery cell on the conveyor belt.

[0020] Furthermore, to ensure that the probes stably contact the positive and negative tabs of the battery cell, a pad is provided on the frame, and the upper surface of the pad is suitable for abutting against the bottom of the positive and negative tabs when a pair of the probes respectively contact the corresponding positive and negative tabs of the battery cell.

[0021] Furthermore, a specific structure of a testing mechanism is provided, the testing mechanism comprising:

[0022] A battery tester is suitable for performing an OCV test by contacting the corresponding positive and negative tabs of the battery cell through a pair of probes to form a closed circuit.

[0023] Furthermore, in order to save the OCV test data of the battery tester, the testing mechanism also includes a recording computer, the recording computer is data connected to the battery tester, and the recording computer is suitable for obtaining the OCV test data from the battery tester and storing the OCV test data.

[0024] Further, in order to facilitate the control of the telescopic actuator, the integrated device for cell OCV testing and tab cutting further includes a controller, the controller is electrically connected to the testing mechanism and the telescopic actuator respectively, and a start button is provided on the controller, the start button is suitable for being pressed and sending a start signal;

[0025] The testing mechanism is adapted to send a completion signal to the controller after completing the OCV test;

[0026] The controller is adapted to control the telescopic actuator to descend upon receiving the start signal or to control the telescopic actuator to ascend upon receiving the completion signal.

[0027] Furthermore, in order to facilitate cutting by the cutter, the cutting mechanism further includes:

[0028] A knife holder, the knife holder is mounted on the frame;

[0029] The cutter is adapted to abut against the top surface of the knife seat under the drive of the telescopic actuator.

[0030] Furthermore, in order to facilitate the adjustment of the cutter position and to fix and replace the cutter, the cutter is provided with at least one waist-shaped hole, and the cutter is suitable for being connected to the frame through a fixing member passing through the waist-shaped hole to fix the cutter on the frame.

[0031] By adopting the above technical solution, the utility model has the following beneficial effects:

[0032] During the operation of the utility model, the first battery cell is first placed in the conveying channel provided by the conveying mechanism. After the conveying mechanism is started, the first battery cell is conveyed to the testing station. At this time, the telescopic actuator is started to move a pair of probes downward along the vertical axis until they contact the corresponding positive and negative ears on the battery cell. The cutter descends synchronously but does not cut, and then the testing mechanism starts the OCV test through the pair of probes. After the OCV test is completed, the telescopic actuator is started again, and the probes rise. At the same time, the second battery cell is placed on the conveying channel and the conveying mechanism is started. At this moment, the conveying mechanism moves the first battery cell to the cutting station, and the second battery cell is taken to the testing station.

[0033] Afterwards, the telescopic actuator is started again, and this time not only does the probe descend for OCV testing, but the cutter also descends synchronously to cut the positive lug of the first cell at the cutting station. After the second cell OCV test is completed, the telescopic actuator rises again, the first cell that has been cut can be taken out, and the new cell is placed on the conveying channel, and the above steps are repeated. The operations of the cutting station and the testing station can be carried out simultaneously, thereby reducing the overall working time and processing process.

[0034] In addition, the limit assembly on the conveyor belt ensures the precise positioning of the battery cell, ensuring the accuracy of the test station and the cutting station. The pads set on the frame ensure the stable contact between the probe and the positive and negative ears of the battery cell. The controllers connected to the telescopic actuator and the test mechanism respectively simplify the control process of the telescopic actuator, making its operation process more convenient and quick.

[0035] In summary, the utility model realizes the simultaneous OCV testing and positive electrode ear cutting processes for the battery cell, improves the automation level and efficiency of production, and reduces the operation complexity and overall cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The three-dimensional structure of the integrated device for cell OCV testing and tab cutting of the utility model is shown in FIG. Figure 1 ;

[0037] Figure 2 The three-dimensional structure of the integrated device for cell OCV testing and tab cutting of the utility model is shown in FIG. Figure 2 ;

[0038] Figure 3 The three-dimensional structure of the integrated device for cell OCV testing and tab cutting of the utility model is shown in FIG. Figure 3 ;

[0039] Figure 4 The utility model is a three-dimensional structural schematic diagram of a battery tester with an integrated device for cell OCV testing and tab cutting. DETAILED DESCRIPTION

[0040] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0041] like Figure 1-4 As shown, a battery cell OCV test and tab cutting integrated device comprises:

[0042] Rack 1;

[0043] A conveying mechanism 2, wherein a conveying channel is provided on the conveying mechanism 2, and the conveying channel is suitable for placing the battery cell 5, and a testing station and a cutting station are sequentially provided along the conveying direction of the conveying channel;

[0044] The telescopic actuator 3 is installed on the frame 1 and is located on one side of the conveying channel. The telescopic actuator 3 is provided with a telescopic end, and a fixed cross bar 31 is installed on the telescopic end.

[0045] A testing mechanism 4, wherein a pair of probes 41 are provided on the testing mechanism 4, and the pair of probes 41 are installed on the fixed cross bar 31;

[0046] When the conveying mechanism 2 drives the battery cell 5 to the testing station, the testing mechanism 4 is adapted to contact the corresponding positive and negative tabs of the battery cell 5 through a pair of probes 41 to perform an OCV test;

[0047] A cutting mechanism 6, wherein the cutting mechanism 6 is provided with a cutter 61, and the cutter 61 is mounted on the fixed cross bar 31;

[0048] When the conveying mechanism 2 drives the battery cell 5 to the cutting station, the cutting mechanism 6 is adapted to contact the positive electrode ear of the battery cell 5 through the cutting knife 61 to cut the positive electrode ear;

[0049] The telescopic actuator 3 is suitable for synchronously driving a pair of probes 41 and a cutter 61 to move up and down, and making the pair of probes 41 contact the corresponding positive and negative tabs of the battery cell 5 at the testing station, and making the cutter 61 contact the positive tab of the battery cell 5 at the cutting station.

[0050] In this embodiment, if Figure 1-2 As shown, first, the first battery cell 5 is placed in the conveying channel provided by the conveying mechanism 2. After the conveying mechanism 2 is started, the first battery cell 5 is conveyed to the testing station. At this time, the telescopic actuator 3 is started to move a pair of probes 41 downward along the vertical axis until they contact the corresponding positive and negative ears on the battery cell 5. The cutter descends synchronously but does not cut, and then the testing mechanism 4 starts the OCV test through the pair of probes 41. After the OCV test is completed, the telescopic actuator 3 is started again, and the probes 41 rise. At the same time, the second battery cell 5 is placed on the conveying channel, and the conveying mechanism 2 is started. At this moment, the conveying mechanism 2 moves the first battery cell 5 to the cutting station, and the second battery cell 5 is brought to the testing station.

[0051] Subsequently, the telescopic actuator 3 is started again, and this time not only the probe 41 descends to perform the OCV test, but also the cutter 61 descends synchronously to cut the positive ear of the first battery cell 5 located at the cutting station. After the OCV test of the second battery cell 5 is completed, the telescopic actuator 3 rises again, the first battery cell 5 that has been cut can be taken out, and the new battery cell 5 is placed on the conveying channel, and the above steps are repeated. The operations of the cutting station and the testing station can be carried out synchronously, thereby reducing the overall working time and processing process.

[0052] In addition, a pair of slide rails is provided on the frame 1 at one side of the conveying channel, and both ends of the fixed cross bar 31 are slidably fitted on the slide rails.

[0053] Specifically, Figure 1-2 As shown, the conveying mechanism 2 may have the following structure:

[0054] A pair of conveying driving rollers 21, the pair of conveying driving rollers 21 are rotatably mounted on the frame 1;

[0055] A conveyor belt 22, the conveyor belt 22 is wrapped around the outer circumference of a pair of conveying drive rollers 21;

[0056] The conveying driving member 23 has an output end coaxially connected to one of a pair of conveying driving rollers 21 , and the conveying driving member 23 is suitable for driving the conveying driving rollers 21 to make the conveying belt 22 run.

[0057] In this embodiment, if Figure 1-2 As shown, the conveying mechanism 2 can realize the automatic conveying of the battery cells 5 by using the cooperation of the conveying belt 22 and the conveying driving member 23, without the need to manually move the battery cells 5 one by one to the corresponding testing station and cutting station, thereby improving the work efficiency. The conveying belt 22 is wrapped around a pair of conveying drive rollers 21, and the conveying is stable.

[0058] The frame 1 includes two support frames, and a mounting hole is provided at the bottom of each support frame to facilitate the support frame to be fixedly mounted on a test bench or a production line.

[0059] Specifically, Figure 1-2 As shown, the frame 1 also includes a support base 11, which is located between a pair of conveying drive rollers 21. The conveyor belt 22 has an upper conveying section formed on the support base 11, and the support base 11 is suitable for supporting the upper conveying section of the conveyor belt 22.

[0060] In this embodiment, if Figure 1-2 As shown, the support seat 11 supports the upper conveying section of the conveyor belt 22, so that the conveyor belt 22 remains flat and level in the section between a pair of conveying drive rollers 21, avoiding sagging, thereby ensuring the stability of the battery cell 5 during transportation in this section.

[0061] The support base 11 is provided with four support legs, and the support base 11 is surrounded by the conveyor belt 22 and supported by the support legs arranged at the bottom of the support base 11. The surface of the support base 11 can be made of a flat and smooth metal material to reduce the movement resistance after contacting the conveyor belt 22.

[0062] Specifically, Figure 1-2 As shown, a limiting assembly is also provided on the conveyor belt 22 , and the limiting assembly includes a pair of positioning block groups 221 . The positioning block groups 221 are suitable for limiting the position of the battery cell 5 on the conveyor belt 22 .

[0063] In this embodiment, if Figure 1-2 As shown, the function of the positioning block group 221 is to limit and fix the position of the battery cell 5 on the conveyor belt 22 to prevent the battery cell 5 from shifting during the conveying process on the conveyor belt 22 .

[0064] The positioning card block group 221 includes three positioning card blocks, which are respectively abutted against the two ends of the battery cell 5 and the end opposite to the pole ear of the battery cell 5. A pair of positioning card block groups 221 correspond to the testing station and the cutting station respectively. The height of the positioning card block group 221 can be higher than the height of the battery cell 5 when it is laid flat. A rounded chamfer is also provided on each positioning card block to facilitate placement and centering. Of course, in some embodiments, the number of positioning card block groups 221 is not limited to one pair, and can be set according to specific needs. The number of positioning card blocks is also not limited to three.

[0065] Specifically, Figure 1-3 As shown, a pad 12 is further provided on the frame 1 , and the upper surface of the pad 12 is suitable for abutting against the bottom of the positive and negative tabs when a pair of probes 41 contact the corresponding positive and negative tabs of the battery cell 5 respectively.

[0066] In this embodiment, if Figure 1-3 As shown, the function of the pad 12 is to provide support when a pair of probes 41 contact the positive and negative tabs of the battery cell 5 respectively to perform an OCV test.

[0067] When the telescopic actuator 3 drives a pair of probes 41 to descend, and the probes 41 respectively contact the tops of the corresponding positive and negative tabs of the battery cell 5, the bottoms of the positive and negative tabs will abut against the upper surface of the pad 12. The presence of the pad 12 supports the positive and negative tabs, ensuring effective contact of the probes 41. The battery tester 42 forms a closed loop with the battery cell 5 by contacting the positive and negative tabs with the probes 41, and starts the OCV test of the battery cell 5. After the test, the telescopic actuator 3 drives the probe 41 to rise, and the height of the pad 12 can be slightly lower than the height of the positive and negative tabs of the battery cell 5 to avoid affecting the normal operation of the battery cell 5 on the conveyor belt 22.

[0068] Specifically, Figure 1-2 and Figure 4 As shown, the testing mechanism 4 may be structured as follows:

[0069] The battery tester 42 is suitable for contacting the corresponding positive and negative tabs of the battery cell 5 through a pair of probes 41 to form a closed loop so as to perform an OCV test.

[0070] In this embodiment, if Figure 1-2 and Figure 4 As shown, the battery tester 42 is provided with positive and negative contacts, which are connected to corresponding probes 41 through wires. The positive and negative ears of the battery cell 5 and a pair of probes 41 and the battery tester 42 form a closed loop to perform OCV testing on the battery cell 5.

[0071] Specifically, Figure 1 and Figure 4 As shown, the testing mechanism 4 further includes a recording computer, which is data-connected to the battery tester 42 , and the recording computer is suitable for acquiring OCV test data from the battery tester 42 and storing the OCV test data.

[0072] In this embodiment, if Figure 4 As shown, the recording computer can be connected to the battery tester 42 via a wired data line or wireless data transmission can be used.

[0073] Specifically, Figure 1 As shown, the integrated device for cell OCV testing and tab cutting also includes a controller, which is electrically connected to the testing mechanism 4 and the telescopic actuator 3 respectively, and is provided with a start button, which is suitable for being pressed and sending a start signal;

[0074] The testing mechanism 4 is adapted to send a completion signal to the controller after completing the OCV test;

[0075] The controller is adapted to control the telescopic actuator 3 to descend when receiving a start signal;

[0076] When receiving the completion signal, the controller controls the telescopic actuator 3 to rise.

[0077] In this embodiment, if Figure 1-2As shown, the function of the controller is to realize the automated process. A start button is provided on the controller. When the start button is pressed, a start signal is sent to the controller. After receiving the start signal, the controller controls the telescopic actuator 3 to drive the probe 41 and the cutter 61 to descend to the working position. After completing the OCV test, the testing mechanism 4 sends a completion signal to the controller. After receiving the completion signal, the controller controls the telescopic actuator 3 to drive the probe 41 and the cutter 61 to rise to complete the test and cutting action. In addition, the controller is also connected to the conveying mechanism. After completing the action of the telescopic actuator 3. The conveying mechanism can be controlled to run a fixed distance, so that the battery cell 5 moves from the test station to the cutting station. The controller can be a PLC or a single-chip microcomputer to realize automated process control. PLC or single-chip microcomputer is a prior art. This embodiment will not be described in detail.

[0078] Specifically, Figure 1 and Figure 3 As shown, the cutting mechanism 6 also includes:

[0079] A knife holder 62, the knife holder 62 is mounted on the frame 1;

[0080] The cutter 61 is adapted to abut against the top surface of the cutter seat 62 under the drive of the telescopic actuator 3 .

[0081] In this embodiment, if Figure 1-3 As shown, the function of the knife seat 62 is to provide reliable support for the cutter 61 when cutting the positive electrode ear of the battery cell 5 .

[0082] When the conveyor belt 22 conveys the battery cell 5 to the cutting station, the controller controls the telescopic actuator 3 to drive the cutter 61 to descend. After the cutter 61 descends to a certain position, the blade of the cutter 61 is aligned with the positive tab of the battery cell 5. Then the telescopic actuator 3 applies downward pressure to make the blade of the cutter 61 cut into and cut the positive tab. The knife seat 62 can usually be made of hard and wear-resistant metal material. The height of the knife seat 62 can be slightly lower than the height of the battery cell 5 to avoid affecting the movement of the tab of the battery cell 5 on the conveyor belt 22.

[0083] Specifically, Figure 1-2 As shown, a pair of waist-shaped holes are opened on the cutter 61 , and the cutter 61 is suitable for being connected to the frame 1 through a fixing piece passing through the waist-shaped holes to fix the cutter 61 on the frame 1 .

[0084] In this embodiment, if Figure 1-3 As shown, the waist-shaped hole is used to fix the cutter 61 to the frame 1 through a fixing member, such as a bolt, to ensure the stability of the position of the cutter 61. In addition, the position of the cutter 61 on the frame can be adjusted by loosening the fixing member and moving along the waist-shaped hole, and the cutter 61 can be detachably installed on the frame 1 through the fixing member, which is convenient for replacing or repairing the cutter 61.

[0085] First, align the waist-shaped hole of the cutter 61 with the reserved installation position on the frame 1, then pass the fixing piece through the waist-shaped hole, screw it into the reserved hole of the frame 1, and fix the cutter 61 by tightening the fixing piece. When disassembling, just reverse the operation.

[0086] A pair of waist-shaped holes is provided. Of course, in some embodiments, the number of waist-shaped holes is not limited to a pair and can be set according to specific needs.

[0087] In addition, the knife holder 62 is also provided with a waist-shaped hole similar to the cutter 61, which is used to fix the knife holder 62 on the frame 1 through a fixing piece to ensure the stability of the position of the knife holder 62 and to adjust the position of the knife holder 62 on the frame through the waist-shaped hole.

[0088] The integrated device for cell OCV testing and tab cutting also includes a code scanning component. A barcode or a QR code is also attached to the cell 5 as an identification code. The function of the code scanning component is to identify the identification code on each cell 5, match the test data with the specific cell 5, and realize data traceability. The code scanning component can be a laser scanner or a camera, etc., which records and stores the identified code together with the test data. The code scanning step is before the test.

[0089] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated device for cell OCV testing and tab cutting, characterized in that: include: Rack(1); A conveying mechanism (2), wherein the conveying mechanism (2) is provided with a conveying channel, the conveying channel is suitable for placing the battery cell (5), and a testing station and a cutting station are sequentially provided along the conveying direction of the conveying channel; A telescopic actuator (3), the telescopic actuator (3) being mounted on the frame (1) and located on one side of the conveying passage, the telescopic actuator (3) being provided with a telescopic end, and a fixed cross bar (31) being mounted on the telescopic end; A testing mechanism (4), wherein the testing mechanism (4) is provided with a pair of probes (41), and the pair of probes (41) are mounted on the fixed cross bar (31); When the conveying mechanism (2) drives the battery cell (5) to arrive at the testing station, the testing mechanism (4) is suitable for contacting the corresponding positive and negative electrodes of the battery cell (5) through a pair of probes (41) to perform an OCV test; A cutting mechanism (6), wherein the cutting mechanism (6) is provided with a cutting knife (61), and the cutting knife (61) is mounted on the fixed cross bar (31); When the conveying mechanism (2) drives the battery cell (5) to arrive at the cutting station, the cutting mechanism (6) is suitable for contacting the positive electrode ear of the battery cell (5) through the cutting knife (61) to cut the positive electrode ear; The telescopic actuator (3) is suitable for synchronously driving a pair of the probes (41) and the cutter (61) to move up and down, and making the pair of the probes (41) contact the corresponding positive and negative tabs of the battery cell (5) at the testing station, and making the cutter (61) contact the positive tab of the battery cell (5) at the cutting station.

2. The integrated device for cell OCV testing and tab cutting according to claim 1, characterized in that: The conveying mechanism (2) comprises: A pair of conveying drive rollers (21), wherein the pair of conveying drive rollers (21) are rotatably mounted on the frame (1); A conveyor belt (22), the conveyor belt (22) being wrapped around the outer circumference of the pair of conveying drive rollers (21); A conveying drive member (23), wherein an output end of the conveying drive member (23) is coaxially connected to one of a pair of conveying drive rollers (21), and the conveying drive member (23) is suitable for driving the conveying drive rollers (21) to make the conveyor belt (22) operate.

3. The integrated device for cell OCV testing and tab cutting according to claim 2, characterized in that: The frame (1) further comprises a support seat (11), wherein the support seat (11) is located between a pair of conveying drive rollers (21), and the conveying belt (22) is provided with an upper conveying section on the support seat (11), and the support seat (11) is suitable for supporting the upper conveying section of the conveying belt (22).

4. The integrated device for cell OCV testing and tab cutting according to claim 2, characterized in that: A position limiting assembly is also provided on the conveyor belt (22), the position limiting assembly comprising at least one pair of positioning block groups (221), the positioning block groups (221) being suitable for limiting the position of the battery core (5) on the conveyor belt (22).

5. The integrated device for cell OCV testing and tab cutting according to claim 1, characterized in that: A cushion block (12) is also provided on the frame (1), and the upper surface of the cushion block (12) is suitable for abutting against the bottom of the positive and negative electrode ears when a pair of probes (41) respectively contact the corresponding positive and negative electrode ears of the battery cell (5).

6. The integrated device for cell OCV testing and tab cutting according to claim 1, characterized in that: The testing mechanism (4) comprises: A battery tester (42), the battery tester (42) being suitable for respectively contacting the corresponding positive and negative tabs of the battery cell (5) through a pair of probes (41) to form a closed circuit, so as to perform an OCV test.

7. The integrated device for cell OCV testing and tab cutting according to claim 6, characterized in that: The testing mechanism (4) also includes a recording computer, the recording computer is data-connected to the battery tester (42), and the recording computer is suitable for acquiring OCV test data from the battery tester (42) and storing the OCV test data.

8. The integrated device for cell OCV testing and tab cutting according to claim 1, characterized in that: It also includes a controller, the controller is electrically connected to the test mechanism (4) and the telescopic actuator (3) respectively, and the controller is provided with a start button, the start button is suitable for being pressed and sending a start signal; The testing mechanism (4) is adapted to send a completion signal to the controller after completing the OCV test; The controller is suitable for controlling the telescopic actuator (3) to descend when receiving the start signal, or controlling the telescopic actuator (3) to ascend when receiving the completion signal.

9. The integrated device for cell OCV testing and tab cutting according to claim 1, characterized in that: The cutting mechanism (6) further comprises: A knife seat (62), wherein the knife seat (62) is mounted on the frame (1); The cutting knife (61) is adapted to abut against the top surface of the knife seat (62) under the drive of the telescopic actuator (3).

10. The integrated device for cell OCV testing and tab cutting according to claim 9, characterized in that: At least one waist-shaped hole is formed on the cutter (61), and the cutter (61) is suitable for being connected to the frame (1) via a fixing piece passing through the waist-shaped hole, so as to fix the cutter (61) on the frame (1).

Images