Short-circuit prevention insulation detection device for lithium battery cell assembly

Abstract

The application discloses a short-circuit prevention insulation detection device based on lithium battery cell assembly and belongs to the technical field of lithium battery packaging detection. The short-circuit prevention insulation detection device based on lithium battery cell assembly comprises a detection device, a base is fixedly installed on the inner bottom surface of the detection device, a through-type lifting column is slidably connected to the surface of the base, a lifting rod is fixedly installed on the top surface of the lifting column, a placing disc is fixedly installed on the top surface of the lifting rod, a lithium battery body to be detected is placed on the surface of the placing disc, and wedge-shaped rails are fixedly installed on the four surfaces of the lifting rod. Compared with the traditional detection device, the short-circuit prevention insulation detection device based on lithium battery cell assembly can complete the center positioning of the lithium battery body without manual intervention, clamp and fix the centered lithium battery body, ensure that the lithium battery body is in an adaptive detection position, and improve the detection efficiency of the detection device on the lithium battery body.

Description

Technical Field

[0001] This invention relates to the field of lithium battery packaging and testing technology, and more specifically, to a short-circuit insulation testing device for lithium battery cell assembly. Background Technology

[0002] Lithium batteries are batteries that use lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. They are characterized by high energy density and long cycle life, and are widely used in consumer electronics, new energy vehicles and energy storage systems.

[0003] Chinese Patent Publication No. CN116722226A discloses a lithium battery packaging device, including a battery mounting base, a flatness testing platform disposed on the rear side of the battery mounting base, side clamping seats disposed on both sides of the battery mounting base, a processing table disposed on the front side of the battery mounting base, and a central control console fixedly connected to the rear side of the side clamping seats. The flatness testing platform includes a testing platform base, a mechanism platform fixedly mounted on the top of the testing platform base, a ranging component disposed on the top of the mechanism platform, a testing motor mounted on the side of the ranging component, a platform rear plate disposed on the rear side of the ranging component, a cleaning air vent fixedly mounted on the top of the platform rear plate, and a testing platform power supply fixedly connected to the side of the cleaning air vent.

[0004] The above technical solution can continuously complete the liquid injection and welding sealing device, and is equipped with a side pressing buffer device to buffer the side pressing effect. It is also equipped with a flatness detection platform to detect the flatness of the battery and monitor the battery deformation in real time. After the lithium battery is packaged, it is necessary to further test the insulation of the lithium battery. In some traditional lithium battery testing devices, the lithium battery must first be placed on the testing platform, and then the lithium battery is centered and fixed by manually adjusting the clamping and centering device. Finally, the test pen is manually picked up to test the electrode of the lithium battery, and the abnormal signal is observed on the display to determine whether the lithium battery is qualified. However, the above testing steps are cumbersome, time-consuming and labor-intensive, which affects the testing efficiency of the lithium battery testing device. Moreover, holding the test pen to test the electrode for a long time will cause hand fatigue and shaking, which will cause the test pen to misalign with the electrode, further affecting the testing efficiency of the lithium battery testing device. Summary of the Invention

[0005] The purpose of this invention is to provide a short-circuit insulation detection device for lithium battery cell assembly, in order to solve the problems mentioned in the background art above: To achieve the above objectives, the present invention provides the following technical solution: A short-circuit insulation testing device for lithium battery cell assembly includes a testing device. A base is fixedly mounted on the bottom surface of the testing device. A through-type lifting column is slidably connected to the surface of the base. A lifting rod is fixedly mounted on the top surface of the lifting column. A placement tray is fixedly mounted on the top surface of the lifting rod. The lithium battery body to be tested is placed on the surface of the placement tray. Wedge-shaped rails are fixedly mounted on all four surfaces of the lifting rod. A fixing frame is provided above the base. Fixing seats are fixedly mounted on the four inner walls of the fixing frame. Each fixing seat has a matching mounting bracket slidably connected inside. The slider has a horizontal seat fixedly installed on its inner side. A rotating plate is rotatably connected inside the horizontal seat. A roller is rotatably connected to the bottom of the rotating plate. The roller contacts a wedge-shaped rail. A through-type guide rod is slidably connected to the top surface of the rotating plate. A clamping block for centering the lithium battery body is fixedly connected to one end surface of the two guide rods. A spring for resetting the movement is sleeved on the surface of the guide rod. A symmetrical seat is fixedly installed on both sides of any rotating plate. A through-type test pen is slidably connected to the surface of the symmetrical seat. The test pen is used to test the lithium battery body.

[0006] Preferably, a fixing plate is fixedly installed on the surface of the lifting column, and a second spring is elastically connected between the fixing plate and the base. One end of the second spring is fixedly connected to the surface of the base, and the other end of the second spring is fixedly connected to the fixing plate. The second spring is sleeved on the surface of the lifting column.

[0007] Preferably, a support column is fixedly installed between the fixed frame and the base, one end of the first spring is fixedly connected to the clamping block, the other end of the first spring is fixedly connected to the rotating plate, and a third spring is elastically connected between the slider and the fixed seat, one end of the third spring is fixedly connected to the slider, and the other end of the third spring is fixedly connected to the fixed seat.

[0008] Preferably, a spring shaft is provided between the rotating plate and the horizontal seat, and the rotating plate is rotatably connected to the horizontal seat through the spring shaft. Two detection poles to be detected are respectively provided on the end surface of the lithium battery body, and a test contact plate for detecting the detection poles is fixedly installed on one end surface of each of the two test pens.

[0009] Preferably, a spring four is elastically connected between the test contact plate and the symmetrical base. One end of the spring four is fixedly connected to the test contact plate, and the other end of the spring four is fixedly connected to the symmetrical base. The contact portion of the spring four with the test contact plate is insulated, and the spring four is sleeved on the surface of the test pen.

[0010] Preferably, the other ends of the two test pens are fixedly mounted with a horizontal plate, and the surface of the horizontal plate is fixedly connected with two supports, and a rotating wheel is rotatably connected between the two supports.

[0011] Preferably, the surface of the fixed frame is provided with a slot, and a matching movable block is slidably connected inside the slot. A movable seat is fixedly installed on the surface of the movable block, and a slope seat for pressing the roller is fixedly installed on the surface of the movable seat. A position sensor for detecting the position of the roller is fixedly installed on the surface of the slope seat. Both the slope seat and the wedge rail include a vertical horizontal rail and an inclined rail.

[0012] Preferably, the surface of the sloped seat is provided with a through groove for the wheel to pass through, the surface of the fixed frame is fixedly mounted with a mounting base, the surface of the mounting base is fixedly mounted with a miniature telescopic device, and the telescopic end of the miniature telescopic device is fixedly connected to the movable seat.

[0013] Preferably, a housing is fixedly installed on the surface of the testing equipment, a telescopic rod is fixedly installed on the bottom surface of the housing, and a moving seat is fixedly connected to the telescopic end of the telescopic rod.

[0014] Preferably, a controller is fixedly mounted on the surface of the testing equipment. The controller is electrically connected to the telescopic rod via a wire, the controller is electrically connected to the miniature telescopic device via a wire, the controller is electrically connected to the position sensor via a wire, and the controller is electrically connected to the test pen via a wire. A mounting bracket is fixedly mounted on the surface of the housing, and a display is fixedly mounted on the surface of the mounting bracket. The display is electrically connected to the test pen via a wire.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1) When using this short-circuit insulation detection device for lithium battery cell assembly, the moving seat moves downwards and acts on the surface of the lithium battery body. The downward movement of the lithium battery body moves the placement tray downwards, which in turn moves the lifting rod and lifting column downwards. The downward movement of the lifting rod moves multiple wedge rails downwards. The inclined rails of the wedge rails first compress the rollers, and the rollers move, causing the rotating plates to rotate inside the horizontal seat. The rotation of the four rotating plates moves the guide rod and clamping blocks. The movement of the multiple clamping blocks centers and positions the lithium battery body. As the inclined rails of the wedge rails continue to compress the rollers, the multiple clamping blocks clamp the centered lithium battery body. Compared with traditional detection devices, this detection device can center and fix the lithium battery body without manual intervention, ensuring that the lithium battery body is in a suitable detection position while improving the detection efficiency of the lithium battery body.

[0016] 2) In use, this short-circuit insulation testing device for lithium battery cell assembly, after the lithium battery body is centered and fixed, the clamping block moves downward with the lithium battery body, causing the guide rod to move downward. The guide rod moves downward, causing the rotating plate and the horizontal seat to move downward. The rotating plate and the lithium battery body move downward synchronously, causing the test pens to move downward. This allows the two test contact plates to move downward synchronously with the detection poles of the lithium battery body. At this time, the rotating wheel is squeezed by the inclined rail of the slope seat, causing the horizontal plate to move. The horizontal plate moves, causing the two test pens to move. The test pens move, causing the two test contact plates to move and contact the detection poles of the lithium battery body, completing the testing of the lithium battery body. Compared with the traditional handheld test pen electrode testing, this testing device can realize the synchronous downward movement of the two test contact plates with the detection poles of the lithium battery body, and the positions of the two test contact plates and the detection poles correspond, preventing shaking caused by manual handling and avoiding misalignment of the test contact plates and detection poles, thereby improving the testing efficiency of the testing device for the lithium battery body.

[0017] 3) When this short-circuit insulation detection device for lithium battery cell assembly is in use, as the lithium battery body moves downward, the four rotating plates rotate, causing the guide rod and clamping blocks to move. The movement of multiple clamping blocks centers and fixes the lithium battery body, while the movement of the test pen causes the two test contact plates to contact the detection poles of the lithium battery body. This enables the detection equipment to perform a one-time detection of the lithium battery body, further improving the detection efficiency of the detection equipment for the lithium battery body. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the detection device and housing structure of the present invention; Figure 3 This is a schematic diagram of the position and structure of the detection device and base of the present invention; Figure 4 This is a schematic diagram of the lithium battery body of the present invention being clamped. Figure 5 This is a schematic diagram of the position structure of the lifting rod and wedge rail of the present invention; Figure 6 This is a schematic diagram showing the separation of the placement tray and the lithium battery body in this invention; Figure 7 This is a schematic diagram of the position and structure of the lifting column and lifting rod of the present invention; Figure 8 This is a schematic diagram showing the position and structure of the fixing frame and fixing base of the present invention; Figure 9 This is a schematic diagram of the position structure of the rotating plate and rollers of the present invention; Figure 10 This is a schematic diagram of the support and wheel position structure of the present invention.

[0019] Explanation of the numbers in the diagram: 1. Testing equipment; 2. Base; 3. Lifting column; 4. Lifting rod; 5. Placement tray; 6. Lithium battery body; 7. Wedge rail; 8. Fixing frame; 9. Fixing seat; 10. Slider; 11. Horizontal seat; 12. Rotating plate; 13. Roller; 14. Guide rod; 15. Clamping block; 16. Spring 1; 17. Symmetrical seat; 18. Test contact plate; 19. Fixing plate; 20. Spring 2; 21. Support column; 22. Spring 3; 23. Spring shaft; 24. Spring 4; 25. Horizontal plate; 26. Support; 27. Rotary wheel; 28. Detection pole; 29. ​​Test pen; 30. Slot; 31. Movable block; 32. Moving seat; 33. Sloping seat; 34. Position sensor; 35. Through slot; 36. Mounting seat; 37. Miniature telescopic device; 38. Telescopic rod; 39. Housing; 40. Controller; 41. Mounting bracket; 42. Display; 43. Motion seat. Detailed Implementation

[0020] Please see Figures 1-10A short-circuit insulation testing device for lithium battery cell assembly includes a testing device 1 for testing a lithium battery body 6. A base 2 is fixedly installed on the bottom surface of the testing device 1. A through-type lifting column 3 is slidably connected to the surface of the base 2. A lifting rod 4 is fixedly installed on the top surface of the lifting column 3. The movement of the lifting rod 4 causes the wedge rail 7 to move, thereby rotating the rotating plate 12 and moving the clamping block 15 to center the lithium battery body 6. A placement tray 5 is fixedly installed on the top surface of the lifting rod 4 for placing the lithium battery body 6. Multiple ball bearings are arranged on the surface of the placement tray 5. The lithium battery body 6 is a conventional automotive strip-type lithium battery in the prior art. The lifting rod 4 has wedge rails 7 fixedly installed on all four surfaces. A fixed frame 8 is set above the base 2. Fixed seats 9 are fixedly installed on the four inner walls of the fixed frame 8. A matching slider 10 is slidably connected inside any fixed seat 9. A horizontal seat 11 is fixedly installed on the inner side of the slider 10. A rotating plate 12 is rotatably connected inside the horizontal seat 11. A roller 13 is rotatably connected to the bottom of the rotating plate 12. The roller 13 is designed to reduce friction on the wedge rails 7. The roller 13 contacts the wedge rails 7. A through guide rod 14 is slidably connected to the top surface of the rotating plate 12. The guide rod 14 is used to guide the movement of the clamping block 15. A clamping block for centering the lithium battery body 6 is fixedly connected to one end surface of the two guide rods 14. 15. Multiple clamping blocks 15 not only center and position the lithium battery body 6, but also clamp and fix the positioned lithium battery body 6. A spring 16 for resetting the guide rod 14 is sleeved on its surface. Symmetrical seats 17 are fixedly installed on both sides of any rotating plate 12. A through-type test pen 29 is slidably connected to the surface of the symmetric seat 17. The test pen 29 is a conventional test pen 29 in the prior art. The test pen 29 is used to test the lithium battery body 6. The downward movement of the moving seat 43 acts on the surface of the lithium battery body 6. The downward movement of the lithium battery body 6 moves the placement plate 5 downward. The downward movement of the placement plate 5 moves the lifting rod 4 and the lifting column 3 downward. The downward movement of the lifting rod 4 moves the lithium battery body 6 downward. Multiple wedge rails 7 move downwards. The inclined rails of the wedge rails 7 first squeeze the rollers 13 to move. The movement of the rollers 13 causes the rotating plates 12 to rotate inside the cross seat 11. The rotation of the four rotating plates 12 causes the guide rods 14 and clamping blocks 15 to move. The movement of multiple clamping blocks 15 centers and positions the lithium battery body 6. As the inclined rails of the wedge rails 7 continue to squeeze the rollers 13, the movement of multiple clamping blocks 15 clamps the centered lithium battery body 6. Compared with traditional detection devices, the detection equipment 1 can center and position the lithium battery body 6 and clamp and fix the centered lithium battery body 6 without manual intervention. This ensures that the lithium battery body 6 is in a suitable detection position and improves the detection efficiency of the detection equipment 1 for the lithium battery body 6.After the lithium battery body 6 is centered and fixed, the clamping block 15 moves downward along with the lithium battery body 6, causing the guide rod 14 to move downward. The guide rod 14 moves downward, causing the rotating plate 12 and the horizontal seat 11 to move downward. The rotating plate 12 and the lithium battery body 6 move downward synchronously, causing the test pens 29 to move downward. This causes the two test contact plates 18 to move downward synchronously with the detection poles 28 of the lithium battery body 6. At this time, the rotating wheel 27 is squeezed by the inclined rail of the slope seat 33, causing the horizontal plate 25 to move. The movement of the horizontal plate 25 causes the two test pens 29 to move. The movement of the 9-axis, carrying two test contact pads 18, brings them into contact with the detection poles 28 of the lithium battery body 6, completing the inspection of the lithium battery body 6. Compared to traditional handheld testing pens for electrode testing, this testing device 1 allows the two test contact pads 18 to move downwards synchronously with the detection poles 28 of the lithium battery body 6, and the positions of the two test contact pads 18 and the detection poles 28 correspond, preventing shaking caused by manual handling and avoiding misalignment between the test contact pads 18 and the detection poles 28, thereby improving the inspection efficiency of the testing device 1 for the lithium battery body 6.

[0021] Please see Figures 3-6 A fixed plate 19 is fixedly installed on the surface of the lifting column 3. A spring 20 is elastically connected between the fixed plate 19 and the base 2. One end of the spring 20 is fixedly connected to the surface of the base 2, and the other end of the spring 20 is fixedly connected to the fixed plate 19. The spring 20 is sleeved on the surface of the lifting column 3 and is used for the movement and reset of the lifting column 3.

[0022] Please see Figures 1-6 A support column 21 is fixedly installed between the fixed frame 8 and the base 2. One end of the spring 16 is fixedly connected to the clamping block 15, and the other end of the spring 16 is fixedly connected to the rotating plate 12. A spring 3 22 is elastically connected between the slider 10 and the fixed seat 9. One end of the spring 3 22 is fixedly connected to the slider 10, and the other end of the spring 3 22 is fixedly connected to the fixed seat 9. The spring 3 22 is used for the movement reset of the slider 10.

[0023] Please see Figures 4-10A spring shaft 23 is provided between the rotating plate 12 and the horizontal seat 11. The spring shaft 23 is a conventional elastic reset shaft in the prior art. The rotating plate 12 is rotatably connected to the horizontal seat 11 through the spring shaft 23. Two detection poles 28 to be tested are respectively provided on the end surface of the lithium battery body 6. The detection poles 28 are conventional detection poles in the prior art. One end surface of each of the two test pens 29 is fixedly installed with a test contact plate 18 for testing the detection poles 28. The test contact plate 18 is a contact disc design to ensure contact between the test contact plate 18 and the detection poles 28. During the downward movement of the lithium battery body 6, the four rotating plates 12 rotate, causing the guide rod 14 and the clamping block 15 to move. The multiple clamping blocks 15 move to center and fix the lithium battery body 6. The movement of the test pens 29 causes the two test contact plates 18 to move and contact the detection poles 28 of the lithium battery body 6. This realizes that the testing device 1 can perform a one-time test on the lithium battery body 6, further improving the testing efficiency of the testing device 1 on the lithium battery body 6.

[0024] Please see Figures 7-10 A spring 24 is elastically connected between the test contact plate 18 and the symmetrical seat 17. One end of the spring 24 is fixedly connected to the test contact plate 18, and the other end of the spring 24 is fixedly connected to the symmetrical seat 17. The contact part of the spring 24 with the test contact plate 18 is insulated. The spring 24 is sleeved on the surface of the test pen 29 and is used for the movement reset of the test pen 29.

[0025] Please see Figures 7-10 The other ends of the two test pens 29 are fixedly mounted with a horizontal plate 25. The surface of the horizontal plate 25 is fixedly connected to two supports 26, and a rotating wheel 27 is rotatably connected between the two supports 26.

[0026] Please see Figures 3-10 The surface of the fixed frame 8 is provided with a slot 30, and a matching movable block 31 is slidably connected inside the slot 30. A movable seat 32 is fixedly installed on the surface of the movable block 31. A slope seat 33 for pressing the roller 27 is fixedly installed on the surface of the movable seat 32. A position sensor 34 for detecting the position of the roller 27 is fixedly installed on the surface of the slope seat 33. The position sensor 34 is a conventional position sensor 34 in the prior art. Both the slope seat 33 and the wedge rail 7 include a vertical horizontal rail and an inclined rail.

[0027] Please see Figures 3-10The surface of the slope seat 33 is provided with a through groove 35 for the rotating wheel 27 to pass through. The surface of the fixed frame 8 is fixedly mounted with a mounting base 36. The surface of the mounting base 36 is fixedly mounted with a miniature telescopic device 37. The miniature telescopic device 37 is a conventional electronically controlled push rod in the prior art. The telescopic end of the miniature telescopic device 37 is fixedly connected to the moving base 32. The slope seat 33 is used to squeeze the rotating wheel 27 to ensure that the two test contact plates 18 move and contact the detection pole 28 of the lithium battery body 6. The slope seat 33 separates from the rotating wheel 27. During the reset process of the spring shaft 23, the rotating plate 12 prevents the rotating wheel 27 from being blocked.

[0028] Please see Figures 1-3 The surface of the testing device 1 is fixedly mounted with a housing 39, and the bottom surface of the housing 39 is fixedly mounted with a telescopic rod 38. The telescopic rod 38 is a conventional electrically controlled push rod in the prior art. The telescopic end of the telescopic rod 38 is fixedly connected to a motion seat 43. The bottom surface of the motion seat 43 and the surface of the placement plate 5 are both provided with multiple balls. The ball configuration is in the prior art. During the process of multiple clamping blocks 15 moving to center and clamp the lithium battery body 6, the elastic force of spring 16 is greater than the rolling friction between the ball and the lithium battery body 6.

[0029] Please see Figures 1-10 A controller 40 is fixedly mounted on the surface of the testing device 1. The controller 40 is a conventional programmable control device in the prior art. The controller 40 is electrically connected to the telescopic rod 38, the miniature telescopic device 37, the position sensor 34, and the test pen 29 via wires. A mounting bracket 41 is fixedly mounted on the surface of the housing 39. A display 42 is fixedly mounted on the surface of the mounting bracket 41. The display 42 is electrically connected to the test pen 29 via wires. The controller 40 receiving and processing signals is in the prior art and will not be described in detail here. The controller 40 controlling the extension and retraction of the telescopic rod 38 and the miniature telescopic device 37 is also in the prior art and will not be described in detail here.

[0030] The steps of using this invention are as follows: When using this short-circuit insulation detection device for lithium battery cell assembly, to test the lithium battery body 6, first place the lithium battery body 6 on the surface of the placement tray 5, then operate the controller 40. The controller 40 controls the extension of the telescopic rod 38, which moves the moving seat 43. The moving seat 43 moves downward and acts on the surface of the lithium battery body 6. As the telescopic rod 38 continues to extend, the lithium battery body 6 moves downward, causing the placement tray 5 to move downward. The placement tray 5 moves downward, causing the lifting rod 4 and the lifting column 3 to move downward. The lifting column 3 moves downward, causing the fixed plate 19 to move downward and compress the spring 20. The lifting rod 4 moves downward, causing multiple wedge rails 7 to move downward. The inclined rails of the wedge rails 7 first compress the rollers. The movement of wheel 13 causes the rotating plate 12 to rotate inside the horizontal seat 11. The rotation of the rotating plate 12 causes the spring shaft 23 to rotate (the elastic force of the spring shaft 23 is less than the elastic force of the spring 22). The rotation of the four rotating plates 12 causes the guide rod 14 and the clamping block 15 to move. The movement of the multiple clamping blocks 15 centers and positions the lithium battery body 6. As the inclined rail of the wedge rail 7 continues to press the roller 13, the multiple clamping blocks 15 clamp the centered lithium battery body 6. After the lithium battery body 6 is clamped and fixed, the roller 13 moves to the vertical rail of the wedge rail 7. The rotation of the four rotating plates 12 also causes the symmetrical seat 17 and the test pen 29 to move. After the lithium battery body 6 is clamped and fixed, the position of the test pen 29 and the detection pole 28 are aligned. Then, the position sensor 34 detects the position of the rotating wheel 27 and transmits the signal to the controller 40. The controller 40 controls the miniature telescopic device 37 to extend. The extension of the miniature telescopic device 37 moves the movable seat 32. The movement of the movable seat 32 moves the movable block 31 within the slot 30. The movement of the movable seat 32 also moves the slope seat 33. At this time, the rotating wheel 27 passes through the through slot 35 and contacts the vertical rail of the slope seat 33. Then, the telescopic rod 38 continues to extend. At this time, the lithium battery body 6 continues to move downward, moving the lifting rod 4 and the lifting column 3 downward. At this time, the clamping block 15 moves downward with the lithium battery body 6, moving the guide rod 14 downward. The downward movement of the guide rod 14 moves the rotating plate 12 and the horizontal seat 11 downward. The downward movement of the horizontal seat 11 moves the slider 10 in the fixed position. The fixed seat 9 moves downward, compressing the spring 22. The rotating plate 12 and the lithium battery body 6 move downward synchronously, carrying the test pen 29 downward. This causes the two test contact plates 18 and the detection poles 28 of the lithium battery body 6 to move downward synchronously. The test pen 29 carries the horizontal plate 25 and the rotating wheel 27 downward. When the rotating wheel 27 moves from the vertical rail of the slope seat 33 to the inclined rail of the slope seat 33, it moves downward synchronously with the two test contact plates 18 and the detection poles 28 of the lithium battery body 6. At this time, the rotating wheel 27 is squeezed by the inclined rail of the slope seat 33, causing the horizontal plate 25 to move. The horizontal plate 25 moves the two test pens 29, and the test pens 29 move the two test contact plates 18 to contact the detection poles 28 of the lithium battery body 6. The spring 24 is then stretched.At this time, the data detected by the test pen 29 is displayed on the display instrument 42. The data displayed on the display instrument 42 is used to determine whether the lithium battery body 6 is qualified. This scheme uses the downward movement of the motion seat 43 to act on the surface of the lithium battery body 6. The downward movement of the lithium battery body 6 moves the placement tray 5 downward, and the downward movement of the placement tray 5 moves the lifting rod 4 and the lifting column 3 downward. The downward movement of the lifting rod 4 moves multiple wedge rails 7 downward. The inclined rails of the wedge rails 7 first squeeze the rollers 13 to move. The movement of the rollers 13 moves the rotating plate 12 inside the horizontal seat 11. The rotation of the four rotating plates 12 moves the guide rod 14 and the clamping block 15. The movement of the multiple clamping blocks 15 moves the lithium battery body. 6. The lithium battery body 6 is centered and positioned. As the inclined rail of the wedge rail 7 continues to press against the roller 13, multiple clamping blocks 15 move to clamp the centered lithium battery body 6. Compared to traditional detection devices, the detection equipment 1 completes the centering and positioning of the lithium battery body 6 and clamping and fixing it without manual intervention, ensuring that the lithium battery body 6 is in a suitable detection position while improving the detection efficiency of the detection equipment 1. After the lithium battery body 6 is centered and fixed, the clamping blocks 15 move downwards along with the lithium battery body 6, causing the guide rod 14 to move downwards. The guide rod 14 moves downwards, causing the rotating plate 12 and the cross seat 11 to move downwards. The test pen 29 moves downwards synchronously with the lithium battery body 6, causing the two test contact plates 18 to move downwards in sync with the detection poles 28 of the lithium battery body 6. At this time, the rotating wheel 27 is pressed by the inclined rail of the slope seat 33, causing the horizontal plate 25 to move. The horizontal plate 25 moves the two test pens 29, which in turn move the two test contact plates 18 to contact the detection poles 28 of the lithium battery body 6, completing the testing of the lithium battery body 6. Compared to traditional handheld test pen electrode testing, this testing device 1 can achieve synchronous downward movement of the two test contact plates 18 and the detection poles 28 of the lithium battery body 6, and the two test contact plates 18... Corresponding to the position of the detection pole 28, this design prevents shaking caused by manual handling and avoids misalignment between the test contact plate 18 and the detection pole 28, thereby improving the testing efficiency of the testing device 1 for the lithium battery body 6. During the downward movement of the lithium battery body 6, the rotation of four rotating plates 12 moves the guide rod 14 and clamping blocks 15. The movement of multiple clamping blocks 15 centers and fixes the lithium battery body 6, while the movement of the test pen 29 moves the two test contact plates 18 to contact the detection pole 28 of the lithium battery body 6. This allows the testing device 1 to perform a single test on the lithium battery body 6, further improving the testing efficiency of the testing device 1 for the lithium battery body 6.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A short-circuit insulation detection device for lithium battery cell assembly, comprising a detection device (1), characterized in that: The testing device (1) has a base (2) fixedly installed on its inner bottom surface. A through-type lifting column (3) is slidably connected to the surface of the base (2). A lifting rod (4) is fixedly installed on the top surface of the lifting column (3). A placement plate (5) is fixedly installed on the top surface of the lifting rod (4). The lithium battery body (6) to be tested is placed on the surface of the placement plate (5). Wedge rails (7) are fixedly installed on all four surfaces of the lifting rod (4). A fixing frame (8) is set above the base (2). Fixing seats (9) are fixedly installed on all four inner walls of the fixing frame (8). A matching slider (10) is slidably connected inside any one of the fixing seats (9). A cross seat (11) is fixedly installed on the inner side of the slider (10). The inside of the horizontal seat (11) is rotatably connected to a rotating plate (12), and the bottom of the rotating plate (12) is rotatably connected to a roller (13). The roller (13) contacts the wedge rail (7). The top surface of the rotating plate (12) is slidably connected to a through guide rod (14). One end surface of the two guide rods (14) is fixedly connected to a clamping block (15) for centering the lithium battery body (6). The surface of the guide rod (14) is sleeved with a spring (16) for resetting its movement. Symmetrical seats (17) are fixedly installed on both sides of any rotating plate (12). A through test pen (29) is slidably connected to the surface of the symmetrical seat (17). The test pen (29) is used to test the lithium battery body (6).

2. The short-circuit insulation detection device for lithium battery cell assembly according to claim 1, characterized in that: A fixed plate (19) is fixedly installed on the surface of the lifting column (3). A spring (20) is elastically connected between the fixed plate (19) and the base (2). One end of the spring (20) is fixedly connected to the surface of the base (2), and the other end of the spring (20) is fixedly connected to the fixed plate (19). The spring (20) is sleeved on the surface of the lifting column (3).

3. The short-circuit insulation detection device for lithium battery cell assembly according to claim 2, characterized in that: A support column (21) is fixedly installed between the fixed frame (8) and the base (2). One end of the first spring (16) is fixedly connected to the clamping block (15), and the other end of the first spring (16) is fixedly connected to the rotating plate (12). A third spring (22) is elastically connected between the slider (10) and the fixed seat (9). One end of the third spring (22) is fixedly connected to the slider (10), and the other end of the third spring (22) is fixedly connected to the fixed seat (9).

4. The short-circuit insulation detection device for lithium battery cell assembly according to claim 1, characterized in that: A spring shaft (23) is provided between the rotating plate (12) and the horizontal seat (11). The rotating plate (12) is rotatably connected to the horizontal seat (11) through the spring shaft (23). Two detection poles (28) to be detected are respectively provided on the end surface of the lithium battery body (6). One end surface of each of the two test pens (29) is fixedly equipped with a test contact plate (18) for detecting the detection poles (28).

5. The short-circuit insulation detection device for lithium battery cell assembly according to claim 4, characterized in that: A spring four (24) is elastically connected between the test contact plate (18) and the symmetrical seat (17). One end of the spring four (24) is fixedly connected to the test contact plate (18), and the other end of the spring four (24) is fixedly connected to the symmetrical seat (17). The contact part of the spring four (24) with the test contact plate (18) is insulated. The spring four (24) is sleeved on the surface of the test pen (29).

6. The short-circuit insulation detection device for lithium battery cell assembly according to claim 5, characterized in that: The other ends of the two test pens (29) are fixedly mounted with a horizontal plate (25), and the surface of the horizontal plate (25) is fixedly connected with two supports (26), and a rotating wheel (27) is rotatably connected between the two supports (26).

7. The short-circuit insulation detection device for lithium battery cell assembly according to claim 6, characterized in that: The surface of the fixed frame (8) is provided with a slot (30), and a matching movable block (31) is slidably connected inside the slot (30). A movable seat (32) is fixedly installed on the surface of the movable block (31). A slope seat (33) for pressing the roller (27) is fixedly installed on the surface of the movable seat (32). A position sensor (34) for detecting the position of the roller (27) is fixedly installed on the surface of the slope seat (33). Both the slope seat (33) and the wedge rail (7) include a vertical horizontal rail and an inclined rail.

8. The short-circuit insulation detection device for lithium battery cell assembly according to claim 7, characterized in that: The surface of the slope seat (33) is provided with a through groove (35) for the wheel (27) to pass through. The surface of the fixed frame (8) is fixedly mounted with a mounting base (36). The surface of the mounting base (36) is fixedly mounted with a miniature telescopic device (37). The telescopic end of the miniature telescopic device (37) is fixedly connected to the movable seat (32).

9. The short-circuit insulation detection device for lithium battery cell assembly according to claim 1, characterized in that: The surface of the testing device (1) is fixedly mounted with a housing (39), and a telescopic rod (38) is fixedly mounted on the bottom surface of the housing (39). The telescopic end of the telescopic rod (38) is fixedly connected to a motion seat (43).

10. The short-circuit insulation detection device for lithium battery cell assembly according to claim 9, characterized in that: A controller (40) is fixedly mounted on the surface of the testing device (1). The controller (40) is electrically connected to the telescopic rod (38) via a wire. The controller (40) is electrically connected to the miniature telescopic device (37) via a wire. The controller (40) is electrically connected to the position sensor (34) via a wire. The controller (40) is electrically connected to the test pen (29) via a wire. A mounting bracket (41) is fixedly mounted on the surface of the housing (39). A display (42) is fixedly mounted on the surface of the mounting bracket (41). The display (42) is electrically connected to the test pen (29) via a wire.

Images