Battery cell automatic detection device

Abstract

The invention discloses an automatic detection device for a battery cell, and belongs to the field of battery cell detection. A battery cell automatic detection device comprises a detection table and charging and discharging machines fixed on two sides of the detection table, a detection groove is formed in the end face of the detection table, the battery cell automatic detection device further comprises a clamping plate moving along the long edge direction of the detection groove, a sliding part for driving the clamping plate to move is arranged in the detection table, an electrode contact piece is arranged on the clamping plate, and the electrode contact piece is arranged on the sliding part. An adjusting part capable of changing the position of the electrode contact piece is arranged on the clamping plate; the lifting plate is slidably connected in the detection groove; a reciprocating part for driving the lifting plate to move up and down is arranged at the bottom of the detection table; according to the invention, the piston groove is filled and released with gas, so that the piston plate drives the lifting plate to rise and fall in a reciprocating manner, and the reset spring is arranged, so that the battery cell is vibrated, the vibration environment when a vehicle runs is simulated, the detection effect is effectively improved, and the effectiveness of the detection result is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell detection, and in particular to an automatic battery cell detection device. Background Art

[0002] Battery cell testing for new energy vehicles is a key step in ensuring their safety, reliability and performance. Battery cells are the core components of the power system of new energy vehicles, and their performance directly affects the operating efficiency and safety of the entire vehicle. In order to ensure the safety of battery cells, a series of performance tests are required, such as battery capacity, cycle life, charge and discharge rate, etc.

[0003] At present, when the battery capacity and cycle life are tested by reciprocating charge and discharge of the battery cell, there will definitely be vibration inside the car when it is driving, and the discharge state of the battery cell at this time will definitely be different from that when it is stationary. The existing method is only tested in a static state, which cannot effectively simulate the state of the battery cell when the new energy vehicle is running, which reduces the effectiveness of the test results; and when the battery cell is continuously charged and discharged, it will definitely generate more heat inside, which poses certain safety hazards. Therefore, a battery cell automatic detection device is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the prior art cannot effectively simulate the state of the battery cells during the operation of new energy vehicles, which reduces the effectiveness of the detection results; and when the battery cells are continuously charged and discharged, more heat will definitely be generated inside, posing certain safety hazards, and an automatic battery cell detection device is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A battery cell automatic detection device comprises a detection platform and a charging and discharging machine fixed on both sides thereof, wherein the detection platform has a detection slot on its end face, and further comprises: a clamping plate moving along the long side direction of the detection slot, a sliding part driving the clamping plate to move is arranged in the detection platform, wherein the clamping plate is provided with an electrode contact piece, and the clamping plate is provided with an adjusting part capable of changing the position of the electrode contact piece; a lifting plate slidably connected to the detection slot, and a reciprocating part driving the lifting plate to move up and down is arranged at the bottom of the detection platform.

[0007] In order to facilitate clamping and wiring, preferably, the sliding part includes a positioning plate, a driving groove is opened in the detection table, the driving groove is connected to the inner cavity of the detection groove, the positioning plate slides in the detection groove, and the two ends of the positioning plate extend through to the outside of the driving groove, and a bidirectional screw rod is rotatably connected in the positioning plate, opposite threads are provided on both sides of the bidirectional screw rod, and moving rings are respectively threaded on both sides of the bidirectional screw rod, the clamping plates are symmetrically arranged in two groups and are respectively fixed on the side walls of the moving ring, a driving motor is fixedly connected to the outer wall of the positioning plate, and the output shaft of the driving motor is fixedly connected to the end of the bidirectional screw rod.

[0008] Furthermore, both sides of the middle part of the bidirectional screw rod are fixedly connected to limit stop rings, the bottoms of the movable rings on both sides are fixedly connected to limit blocks, a limit guide rod is slidably connected through the limit blocks on both sides, and both ends of the limit guide rod are fixedly connected to both sides of the positioning plate.

[0009] In order to improve the convenience of use, preferably, the adjustment part includes an adjustment groove, which is opened on the side wall of the clamping plate, and two groups of sliding columns are slidably connected in the adjustment groove, the electrode contact is fixed to the end of the sliding column away from the charger and discharger, and a positioning nut is threadedly connected to the outer wall of the end of the sliding column away from the electrode contact, and a conductive wire is electrically connected to the charger and discharger, and the other end of the conductive wire passes through the sliding column and is electrically connected to the electrode contact.

[0010] In order to improve the detection effect, preferably, the reciprocating part includes an inflation chamber, which is fixed on the top of the detection platform, and a piston groove is opened in the inflation chamber, and the top of the piston groove is respectively connected with the detection groove and the driving groove, a piston plate is slidably connected in the piston groove, the bottom of the lifting plate is fixedly connected to the top of the piston plate, a reset spring is fixedly connected between the bottom of the piston plate and the piston groove, an inflation pump is fixedly connected to the side wall of the detection platform, and an inflation pipe is fixedly connected to the output end of the inflation pump, the inflation pipe passes through the bottom of the inner cavity of the inflation chamber, and a plurality of groups of inflation holes are evenly spaced on the inflation pipe, a push plate is fixedly connected to the top of the piston plate, a positioning sleeve is fixedly connected to the middle part of the bidirectional screw rod, and the top of the push plate passes through the driving groove and is fixedly connected to the bottom of the positioning sleeve.

[0011] In order to facilitate cooling of the battery cells, preferably, an air guide groove is opened inside the clamping plate, and two groups of the air guide grooves are symmetrically arranged along the center of the clamping plate, and blowing holes are opened on the side walls of each group of the air guide grooves at equal intervals. The output ends of the blowing holes are inclined, and the upper and lower groups of the blowing holes are symmetrical along the center of the clamping plate, and an air supply part for conveying airflow to the air guide groove is arranged in the driving groove.

[0012] Furthermore, the air supply part includes an air supply pipe, which is fixed in the driving groove. The bottom end of the air supply pipe passes through the piston plate and is connected with the lower cavity of the piston groove. Air supply grooves are opened in the two groups of movable rings. The air supply grooves are connected with the inner cavity of the air guide groove. The air supply grooves on both sides are connected by an air guide hose. The top end of the air supply pipe is connected with the inner cavity of the air guide hose. The air supply pipe is provided with a switching part for controlling the direction of air flow.

[0013] In order to achieve reciprocating operation, further, the switching part includes a switching box, which is fixed on the outside of the horizontal section of the air supply pipe, and the inner cavity of the switching box is connected to the inner cavity of the air supply pipe. A gate plate is slidably connected in the switching box, and a limited push groove is provided on the side wall of the push plate. The gate plate is arranged in a "7" shape, and the vertical section of the gate plate passes through the top of the switching box. The end of the horizontal section of the gate plate is inserted into the limited push groove, and the friction between the gate plate and the switching box is greater than its gravity.

[0014] In order to improve the overall stability of the device, preferably, support seats are fixedly connected on all four sides of the bottom of the testing platform, the interior of the support seats is hollow, the inner cavities of the four groups of support seats are connected by exhaust pipes, the input end of the air pump is connected to the exhaust pipe, and a one-way valve is arranged in the exhaust pipe.

[0015] In order to facilitate moving to the device, further, a pressure relief pipe is fixed on and connected to the air extraction pipe, and a solenoid valve is arranged in the pressure relief pipe.

[0016] Compared with the prior art, the present invention provides a battery cell automatic detection device, which has the following beneficial effects:

[0017] 1. The battery cell automatic detection device fills and releases gas into the piston groove, so that the piston plate drives the lifting plate to move up and down reciprocatingly, and cooperates with the setting of the reset spring to make the battery cell vibrate, thereby simulating the vibration environment when the vehicle is driving, effectively improving the detection effect and ensuring the validity of the detection result.

[0018] 2. The battery cell automatic detection device can release the gas filled in the piston groove through the cooperation between the limit push groove, the gate plate and the air supply pipe, and finally blow it toward the battery cell along the blowing hole, thereby accelerating the gas flow rate around the battery cell, achieving a good heat dissipation effect, and ensuring the safety of the battery cell during detection.

[0019] 3. The battery cell automatic detection device can realize the connection and fixation of battery cells of different sizes through the coordinated setting of the bidirectional screw rod, the clamping plate, the adjustment groove and the sliding column, thereby improving the scope of application, and cooperates with the work of the charging and discharging machine to complete the evaluation of the cycle service life of the battery cell and realize the charging and discharging performance detection of the battery cell.

[0020] 4. The battery cell automatic detection device, through the setting of the support base and the exhaust pipe, can reduce the air pressure in the inner cavity of the support base during use, so that an adsorption effect is generated in the support base, thereby being tightly adsorbed to the desktop, effectively improving the stability of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The overall structure of the battery cell automatic detection device proposed by the present invention is shown in FIG. Figure 1 ;

[0022] Figure 2 The overall structure of the battery cell automatic detection device proposed by the present invention is shown in FIG. Figure 2 ;

[0023] Figure 3 A schematic diagram of a half-section structure of a battery cell automatic detection device proposed by the present invention;

[0024] Figure 4 A battery cell automatic detection device proposed by the present invention Figure 3 A schematic diagram of the enlarged structure of the middle A area;

[0025] Figure 5 A schematic diagram of a partial cross-sectional structure of a battery cell automatic detection device proposed by the present invention;

[0026] Figure 6 A battery cell automatic detection device proposed by the present invention Figure 5 Schematic diagram of the enlarged structure of the middle B area;

[0027] Figure 7 A schematic diagram of the internal structure of a driving slot of a battery cell automatic detection device proposed by the present invention;

[0028] Figure 8 The present invention is a schematic diagram of the cross-sectional structure of a clamping plate of a battery cell automatic detection device proposed by the present invention.

[0029] In the figure: 1, test table; 2, charging and discharging machine; 3, test slot; 4, clamping plate; 41, electrode contact piece; 42, adjustment slot; 421, sliding column; 422, positioning nut; 423, conductive wire; 5, lifting plate; 6, positioning plate; 61, driving slot; 62, two-way screw rod; 621, positioning sleeve; 63, moving ring; 631, air supply slot; 64, driving motor; 65, limit stop ring; 66, limit Block; 661, limit guide rod; 7, inflation chamber; 71, piston groove; 711, piston plate; 72, return spring; 73, inflation pump; 74, inflation pipe; 741, inflation hole; 75, push plate; 751, limit push groove; 8, air guide groove; 81, blowing hole; 82, air supply pipe; 83, air guide hose; 84, switching box; 841, gate; 9, support seat; 91, exhaust pipe; 92, pressure relief pipe. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] Example:

[0033] Reference Figure 1-Figure 8 A battery cell automatic detection device includes a detection platform 1 and a charging and discharging machine 2 fixed on both sides thereof, the charging and discharging machine 2 adopts the existing mature technology, and the specific model is CM-CF-18; the detection platform 1 is provided with a detection slot 3 on the end surface, and also includes: a clamping plate 4 moving along the long side direction of the detection slot 3, a sliding part driving the clamping plate 4 to move is arranged in the detection platform 1, wherein the clamping plate 4 is provided with an electrode contact piece 41, and the clamping plate 4 is provided with an adjusting part capable of changing the position of the electrode contact piece 41; a lifting plate 5 slidably connected to the detection slot 3, and a reciprocating part driving the lifting plate 5 to move up and down is arranged at the bottom of the detection platform 1.

[0034] Reference Figure 2 , Figure 3 , Figure 6 and Figure 7, wherein the sliding part includes a positioning plate 6, a driving groove 61 is opened in the detection table 1, the driving groove 61 is communicated with the inner cavity of the detection groove 3, the positioning plate 6 fits and slides in the detection groove 3, and the two ends of the positioning plate 6 extend through the outside of the driving groove 61, and a bidirectional screw rod 62 is rotatably connected in the positioning plate 6, and opposite threads are arranged on both sides of the bidirectional screw rod 62, and a moving ring 63 is threadedly sleeved on both sides of the bidirectional screw rod 62, and the clamping plate 4 is symmetrically provided with two groups and respectively fixed on the side walls of the moving ring 63, and a driving motor 64 is fixedly connected to the outer wall of the positioning plate 6, and the output shaft of the driving motor 64 is fixedly connected to the end of the bidirectional screw rod 62; both sides of the middle of the bidirectional screw rod 62 are fixedly connected with limited The retaining ring 65 and the bottom of the movable rings 63 on both sides are fixedly connected to the limiting blocks 66, and the limiting guide rods 661 are slidably connected between the limiting blocks 66 on both sides, and the two ends of the limiting guide rods 661 are fixedly connected to the two sides of the positioning plate 6; the adjustment part includes an adjustment groove 42, the adjustment groove 42 is opened on the side wall of the clamping plate 4, and two groups of sliding columns 421 are slidably connected in the adjustment groove 42, the electrode contact 41 is fixed to the end of the sliding column 421 away from the charger and discharger 2, and the outer wall of the end of the sliding column 421 away from the electrode contact 41 is threadedly connected with a positioning nut 422, and the charger and discharger 2 is electrically connected with a conductive wire 423, and the other end of the conductive wire 423 passes through the sliding column 421 and is electrically connected to the electrode contact 41.

[0035] Through the arrangement of the above structure, the battery cell is placed on the lifting plate 5, and then the driving motor 64 is turned on to drive the bidirectional screw rod 62 to rotate, so that the moving rings 63 on both sides move with the clamping plate 4 to the center of the detection groove 3. When it is about to contact the battery cell, the driving motor 64 is turned off. At this time, after loosening the positioning nut 422, the sliding column 421 is pushed to align the contact end of the electrode contact piece 41 with the copper sheet area of ​​the battery cell. Then, the positioning nut 422 is tightened, and the driving motor 64 is turned on again to make the electrode contact piece 41 contact the copper sheet of the battery cell, so as to achieve a close fit effect, ensure the stability of the electrical connection, and be applicable to battery cells of different sizes, thereby improving the scope of application of the device; then the charging and discharging machine 2 performs a charge and discharge cycle test on the battery cell, so as to observe the capacity and capacity decay of the battery cell in the reciprocating charge and discharge test, so as to evaluate the cycle service life of the battery cell, so as to complete the charge and discharge performance test of the battery cell.

[0036] Reference Figure 1-Figure 8, wherein the reciprocating part includes an air filling chamber 7, the air filling chamber 7 is fixed on the top of the detection platform 1, a piston groove 71 is provided in the air filling chamber 7, and the top of the piston groove 71 is respectively connected with the detection groove 3 and the driving groove 61, a piston plate 711 is slidably connected in the piston groove 71, the bottom of the lifting plate 5 is fixedly connected to the top of the piston plate 711, a return spring 72 is fixedly connected between the bottom of the piston plate 711 and the piston groove 71, an air pump 73 is fixedly connected to the side wall of the detection platform 1, and an air filling pipe 74 is fixedly connected to the output end of the air pump 73 The inflation tube 74 penetrates to the bottom of the inner cavity of the inflation chamber 7, and a plurality of groups of inflation holes 741 are evenly spaced on the inflation tube 74. A push plate 75 is fixedly connected to the top of the piston plate 711. A positioning sleeve 621 is fixedly connected to the middle of the bidirectional screw rod 62. The top of the push plate 75 penetrates into the driving groove 61 and is fixedly connected to the bottom of the positioning sleeve 621. An air guide groove 8 is opened inside the clamping plate 4. Two groups of air guide grooves 8 are symmetrically arranged along the center of the clamping plate 4. Blowing holes 81 are evenly spaced on the side walls of each group of air guide grooves 8. The blowing holes 81 The output end is inclined, and the upper and lower groups of blowing holes 81 are symmetrical along the center of the clamping plate 4. An air supply part for conveying air to the air guide groove 8 is provided in the driving groove 61; the air supply part includes an air supply pipe 82, which is fixed in the driving groove 61, and the bottom end of the air supply pipe 82 passes through the piston plate 711 and is connected to the lower cavity of the piston groove 71. Air supply grooves 631 are provided in the two groups of movable rings 63, and the air supply grooves 631 are connected to the inner cavity of the air guide groove 8. The air supply grooves 631 on both sides are connected by an air guide hose 83, and the top of the air supply pipe 82 is connected to the The inner cavity of the air guide hose 83 is connected, and a switching part for controlling the direction of air flow is provided on the air supply pipe 82; the switching part includes a switching box 84, which is fixed on the outside of the horizontal section of the air supply pipe 82, and the inner cavity of the switching box 84 is connected with the inner cavity of the air supply pipe 82, and a gate plate 841 is slidably connected in the switching box 84, and a limiting push groove 751 is provided on the side wall of the push plate 75, and the gate plate 841 is arranged in a "7" shape, and the vertical section of the gate plate 841 passes through the top of the switching box 84, and the end of the horizontal section of the gate plate 841 is inserted into the limiting push groove 751.

[0037] By setting the above structure, during the process of charging and discharging cycle detection of the battery cell, the air pump 73 can be turned on to fill the piston groove 71 with gas through the air filling pipe 74 and the air filling hole 741. When the air pressure in the piston groove 71 increases, the piston plate 711 will be pushed to move upward, and the return spring 72 will be stretched and stored energy, which will also push the lifting plate 5 and the positioning plate 6 to be lifted upward as a whole, and the battery cell will also be lifted upward at this time. At the same time, when the push plate 75 moves upward with the piston plate 711, the gate plate 841 located at the bottom of the limiting push groove 751 will be pulled upward together, and finally the gate plate 841 will be separated from the blockage of the air supply pipe 82. At this time, the high-pressure gas in the piston groove 71 will quickly enter along the air supply pipe 82, the air guide hose 83 and the air supply groove 631. The air enters the air guide groove 8 and is finally blown toward the battery cell along the blowing hole 81, thereby accelerating the gas flow rate around the battery cell, thereby taking away the temperature generated during charging and discharging of the battery cell, achieving a good heat dissipation effect, and ensuring the safety of the battery cell during detection; and when the gas in the piston groove 71 is reduced, under the action of gravity and the rebound of the reset spring 72, the piston plate 711 will quickly reset the lifting plate 5, and in the process of the lifting plate 5 moving downward, the gate plate 841 located at the top of the limiting push groove 751 will be pushed back, so as to achieve the blocking of the air supply pipe 82 and realize another lifting action. Such reciprocating action will cause the battery cell to be vibrated, thereby simulating the vibration environment when the vehicle is driving, effectively improving the detection effect, and ensuring the validity of the detection result.

[0038] In addition, the friction between the gate plate 841 and the switch box 84 is greater than its gravity, which can ensure that the gate plate 841 will not reset itself and can only slide under the push of the limiting push groove 751, ensuring the use effect.

[0039] Reference Figure 1-Figure 3 Among them, support seats 9 are fixedly connected to the bottom of the testing platform 1 on all sides. The interior of the support seats 9 is hollow. The inner cavities of the four groups of support seats 9 are connected through exhaust pipes 91. The input end of the air pump 73 is connected to the exhaust pipe 91, and a one-way valve is arranged in the exhaust pipe 91; a pressure relief pipe 92 is fixed on and connected to the exhaust pipe 91, and a solenoid valve is arranged in the pressure relief pipe 92.

[0040] It should be noted that the one-way valve in the exhaust pipe 91 can only allow the gas in the inner cavity of the support seat 9 to be sucked away along the exhaust pipe 91 .

[0041] Through the arrangement of the above-mentioned structure, when the air pump 73 is working, the suction force generated at its input end will open the one-way valve in the exhaust pipe 91, so that the gas in the inner cavity of the support seat 9 is sucked away along the exhaust pipe 91, thereby reducing the air pressure in the inner cavity of the support seat 9, causing an adsorption effect in the support seat 9, so that it is tightly adsorbed to the desktop, effectively improving the stability of the device during use; when the device needs to be moved, the solenoid valve in the pressure relief pipe 92 is opened to allow external gas to enter the support seat 9 to relieve its negative pressure state, and the device can be moved, effectively improving the convenience of use.

[0042] Reference Figure 1-Figure 8 In the present invention, when in use, the battery cell is placed on the lifting plate 5, and then the driving motor 64 is turned on to drive the bidirectional screw rod 62 to rotate, so that the moving rings 63 on both sides move with the clamping plate 4 to the center of the detection groove 3. When it is about to contact the battery cell, the driving motor 64 is turned off. At this time, after loosening the positioning nut 422, the sliding column 421 is pushed to align the contact end of the electrode contact piece 41 with the copper sheet area of ​​the battery cell, and then the positioning nut 422 is tightened, and the driving motor 64 is turned on again to make the electrode contact piece 41 contact the copper sheet of the battery cell, so as to achieve a close fitting effect, ensure the stability of the electrical connection, and be applicable to battery cells of different sizes, thereby improving the scope of application of the device; then the charging and discharging machine 2 performs a charge and discharge cycle test on the battery cell, so as to observe the capacity and capacity decay of the battery cell in the reciprocating charge and discharge test, so as to evaluate the cycle service life of the battery cell, so as to complete the charge and discharge performance test of the battery cell.

[0043] During the process of charging and discharging cycle detection of the battery cell, the air pump 73 can be turned on to fill gas into the piston groove 71 through the air charging pipe 74 and the air charging hole 741. When the air pressure in the piston groove 71 increases, the piston plate 711 will be pushed to move upward, and the return spring 72 will be stretched and stored energy, which will also push the lifting plate 5 and the positioning plate 6 to lift up as a whole, and the battery cell will also be lifted upward. At the same time, when the push plate 75 moves upward with the piston plate 711, the gate plate 841 located at the bottom of the limiting push groove 751 will be pulled upward together, and finally the gate plate 841 will be separated from the blockage of the air supply pipe 82. At this time, the high-pressure gas in the piston groove 71 will quickly enter the air guide groove 8 along the air supply pipe 82, the air guide hose 83 and the air supply groove 631. The air in the piston groove 71 is finally blown toward the battery cell along the blowing hole 81, so as to speed up the gas flow rate around the battery cell, thereby taking away the temperature generated during charging and discharging of the battery cell, achieving a good heat dissipation effect, and ensuring the safety of the battery cell during detection; and when the gas in the piston groove 71 is reduced, under the action of gravity and the rebound of the reset spring 72, the piston plate 711 will quickly reset the lifting plate 5, and in the process of the lifting plate 5 moving downward, the gate plate 841 located at the top of the limiting push groove 751 will be pushed back, so as to achieve the blocking of the air supply pipe 82 and realize the lifting action again. Such reciprocating action will cause the battery cell to be vibrated, thereby simulating the vibration environment when the vehicle is driving, effectively improving the detection effect, and ensuring the validity of the detection result.

[0044] And when the air pump 73 is working, the suction force generated at its input end will open the one-way valve in the exhaust pipe 91, so that the gas in the inner cavity of the support seat 9 is sucked away along the exhaust pipe 91, thereby reducing the air pressure in the inner cavity of the support seat 9, causing an adsorption effect in the support seat 9, so that it is tightly adsorbed to the desktop, effectively improving the stability of the device during use; when the device needs to be moved, the solenoid valve in the pressure relief pipe 92 is opened, so that the outside gas enters the support seat 9 to relieve its negative pressure state, and the device can be moved, effectively improving the convenience of use.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A battery cell automatic detection device, comprising a detection platform (1) and a charging and discharging machine (2) fixed on both sides thereof, characterized in that: The detection platform (1) is provided with a detection slot (3) on the end surface, and further comprises: A clamping plate (4) moves along the long side direction of the detection groove (3), and a sliding part for driving the clamping plate (4) to move is arranged in the detection platform (1). The clamping plate (4) is provided with an electrode contact piece (41), and the clamping plate (4) is provided with an adjustment portion capable of changing the position of the electrode contact piece (41); A lifting plate (5) is slidably connected to the detection groove (3), and a reciprocating part for driving the lifting plate (5) to move up and down is arranged at the bottom of the detection platform (1).

2. The battery cell automatic detection device according to claim 1, characterized in that: The sliding part comprises a positioning plate (6), a driving groove (61) is provided in the detection platform (1), the driving groove (61) is communicated with the inner cavity of the detection groove (3), the positioning plate (6) slides in the detection groove (3), and the two ends of the positioning plate (6) extend through the driving groove (61) to the outside, and a bidirectional screw rod (62) is rotatably connected in the positioning plate (6), opposite threads are provided on both sides of the bidirectional screw rod (62), and moving rings (63) are respectively threadedly sleeved on both sides of the bidirectional screw rod (62), the clamping plate (4) is symmetrically provided with two groups and respectively fixed on the side walls of the moving ring (63), the outer wall of the positioning plate (6) is fixedly connected with a driving motor (64), and the output shaft of the driving motor (64) is fixedly connected to the end of the bidirectional screw rod (62).

3. The battery cell automatic detection device according to claim 2, characterized in that: Both sides of the middle of the bidirectional screw rod (62) are fixedly connected to the limiting stop ring (65), the bottoms of the movable rings (63) on both sides are fixedly connected to the limiting blocks (66), a limiting guide rod (661) is slidably connected through the limiting blocks (66) on both sides, and both ends of the limiting guide rod (661) are fixedly connected to the two sides of the positioning plate (6).

4. The battery cell automatic detection device according to claim 1, characterized in that: The adjusting portion comprises an adjusting groove (42), wherein the adjusting groove (42) is formed on a side wall of the clamping plate (4), wherein two groups of sliding columns (421) are slidably connected in the adjusting groove (42), wherein the electrode contact sheet (41) is fixed to an end of the sliding column (421) away from the charging and discharging machine (2), wherein a positioning nut (422) is threadedly connected to an outer wall of an end of the sliding column (421) away from the electrode contact sheet (41), wherein a conductive wire (423) is electrically connected to the charging and discharging machine (2), and the other end of the conductive wire (423) passes through the sliding column (421) and is electrically connected to the electrode contact sheet (41).

5. The battery cell automatic detection device according to claim 2, characterized in that: The reciprocating part comprises an air filling chamber (7), the air filling chamber (7) is fixed on the top of the detection platform (1), a piston groove (71) is provided in the air filling chamber (7), and the top of the piston groove (71) is respectively connected to the detection groove (3) and the driving groove (61), a piston plate (711) is slidably connected in the piston groove (71), the bottom of the lifting plate (5) is fixedly connected to the top of the piston plate (711), a return spring (72) is fixedly connected between the bottom of the piston plate (711) and the piston groove (71), and the detection platform (1) An air pump (73) is fixedly connected to the side wall, an output end of the air pump (73) is fixedly connected to an air pipe (74), the air pipe (74) passes through the bottom of the inner cavity of the air filling chamber (7), and a plurality of groups of air filling holes (741) are arranged at equal intervals on the air pipe (74), a push plate (75) is fixedly connected to the top of the piston plate (711), a positioning sleeve (621) is fixedly connected to the middle of the bidirectional screw rod (62), and the top end of the push plate (75) passes through the driving groove (61) and is fixedly connected to the bottom of the positioning sleeve (621).

6. The battery cell automatic detection device according to claim 5, characterized in that: An air guide groove (8) is provided inside the clamping plate (4), and two groups of the air guide grooves (8) are symmetrically arranged along the center of the clamping plate (4) in the upper and lower directions. Blowing holes (81) are evenly spaced on the side walls of each group of the air guide grooves (8), and the output ends of the blowing holes (81) are inclined, and the upper and lower groups of the blowing holes (81) are symmetrical along the center of the clamping plate (4). An air supply portion for conveying airflow to the air guide grooves (8) is provided in the driving groove (61).

7. The battery cell automatic detection device according to claim 6, characterized in that: The air supply part comprises an air supply pipe (82), the air supply pipe (82) is fixed in the driving groove (61), the bottom end of the air supply pipe (82) passes through the piston plate (711) and is connected to the lower cavity of the piston groove (71), the two groups of movable rings (63) are each provided with an air supply groove (631), the air supply groove (631) is connected to the inner cavity of the air guide groove (8), the air supply grooves (631) on both sides are connected through an air guide hose (83), the top end of the air supply pipe (82) is connected to the inner cavity of the air guide hose (83), and the air supply pipe (82) is provided with a switching part for controlling the direction of air flow.

8. The battery cell automatic detection device according to claim 7, characterized in that: The switching part comprises a switching box (84), the switching box (84) being fixed on the outside of the horizontal section of the air supply pipe (82), and the inner cavity of the switching box (84) being communicated with the inner cavity of the air supply pipe (82), a gate plate (841) being slidably connected inside the switching box (84), a side wall of the push plate (75) being provided with a limit push groove (751), the gate plate (841) being arranged in a "7" shape, the vertical section of the gate plate (841) passing through the top of the switching box (84), the end of the horizontal section of the gate plate (841) being inserted into the limit push groove (751), and the friction force between the gate plate (841) and the switching box (84) being greater than the gravity thereof.

9. The battery cell automatic detection device according to claim 5, characterized in that: The bottom of the testing platform (1) is fixedly connected to support seats (9) on all sides. The interior of the support seats (9) is hollow. The inner cavities of the four groups of support seats (9) are connected through an exhaust pipe (91). The input end of the air pump (73) is connected to the exhaust pipe (91), and a one-way valve is arranged in the exhaust pipe (91).

10. The battery cell automatic detection device according to claim 9, characterized in that: A pressure relief pipe (92) is fixed on and connected to the air extraction pipe (91), and a solenoid valve is arranged in the pressure relief pipe (92).

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