Lithium battery puncture experiment device

Abstract

The utility model belongs to the technical field of lithium battery puncture experiments, and particularly relates to a lithium battery puncture experiment device which comprises a box body, an experiment bin is arranged in the box body, a sliding groove is formed in a fixing seat, a first lead screw is installed on an output shaft of a first stepping motor, a clamping plate is installed on a sliding frame, and a second lead screw is installed on the clamping plate. Indicating lamps are installed on the clamping plates, limiting blocks are assembled in the limiting grooves, first electrode plates are installed on the side walls of the limiting blocks, second electrode plates are installed on the inner walls of the limiting grooves, and the two clamping plates stop moving at the moment when the two clamping plates clamp and fix the lithium battery, so that the distance between the two clamping plates is controlled; and when the lithium battery is punctured, the length of the lithium battery is reduced after the lithium battery is deformed, the control panel controls the first stepping motor to operate again, and the steps are repeated, so that the deformed lithium battery is clamped and fixed by the two clamping plates, stable clamping of the lithium battery is realized, and the clamping effect of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery puncture experiments, in particular to a lithium battery puncture experiment device. Background Art

[0002] In the process of research and experimental development of high-efficiency energy-saving equipment technology, it is necessary to conduct puncture tests on lithium batteries to simulate the situation where the lithium batteries are punctured by needles. Therefore, it is necessary to use a lithium battery puncture test device to conduct experiments.

[0003] A Chinese patent application with application publication number CN 112763913 A discloses a lithium battery puncture and shearing test device, including a shell, a closed shell cavity provided in the shell, and a puncture device provided in the shell cavity. The present invention has a built-in battery puncture detection device, which punctures the battery with a sharp object to detect the battery performance to provide battery stability and safety indicators. The present invention has a built-in battery lifting device to lift the battery to a specified height, and the lifting device has a built-in collection bin to collect various wastewater and waste generated during the detection. The present invention has a built-in battery shearing device to shear the battery into segments, thereby detecting the damage performance of the battery and providing a safety score. The present invention has a built-in smoke collection device to prevent toxic smoke and dust from entering the human body and causing harm to personnel. The present invention has a built-in water spray cooling fire extinguishing device that can continuously cool the battery after extinguishing the fire to prevent it from spontaneously combusting again.

[0004] When puncturing a lithium battery, the existing lithium battery puncture test device clamps and fixes the lithium battery through a clamp. However, since the lithium battery is prone to deformation, the clamp cannot be quickly adjusted according to the deformation of the lithium battery, resulting in poor clamping effect of the device. Therefore, a lithium battery puncture test device is proposed to address the above problem. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems existing in the prior art, the utility model proposes a lithium battery puncture test device.

[0006] The technical solution adopted by the utility model to solve its technical problems is a lithium battery puncture experimental device, comprising a box body, an experimental chamber is provided inside the box body, a box door is installed on the box body, a single-layer visual explosion-proof glass is installed on the box door, a control panel is installed on the outer wall of the box body, a fixing seat is installed on the bottom wall of the experimental chamber, a slide groove is provided on the fixing seat, a first stepper motor is installed on the inner wall of the box body, a first screw rod is installed on the output shaft of the first stepper motor, the thread directions of the first screw rod are symmetrically opposite, the first screw rod is rotatably installed on the inner wall of the slide groove, two sliders are symmetrically arranged in the slide groove, a sliding frame is installed on the slider, a splint is installed on the sliding frame, an indicator light is installed on the splint, a limiting groove is provided inside the splint, a limiting block is installed in the limiting groove, a first electrode sheet is installed on the side wall of the limiting block, and a first electrode sheet is installed on the inner wall of the limiting groove. A second electrode sheet is provided, a plate groove is provided on the side wall of the splint, a movable plate is installed in the plate groove, a placement seat is installed on the fixed seat, the movable plate is fixedly connected to the limit block, and anti-slip grooves are provided on the outer wall of the movable plate. A plurality of springs are installed between the side wall of the limit block and the inner wall of the limit groove. The first electrode sheet and the second electrode sheet are connected to the indicator light through an internal circuit, and the indicator light is connected to the control panel through an internal circuit. The control panel is connected to the first stepper motor through an internal circuit. At the moment when the two splints clamp and fix the lithium battery, the two splints stop moving, thereby realizing the control of the distance between the two splints. When the lithium battery is punctured, the lithium battery is deformed and its length decreases. The control panel controls the first stepper motor to operate again, and repeats the above steps so that the two splints clamp and fix the deformed lithium battery, thereby realizing stable clamping of the lithium battery, which is beneficial to improving the clamping effect of the device.

[0007] Preferably, a hydraulic cylinder is installed inside the box, a hydraulic rod is installed on the hydraulic cylinder, a guide plate is installed on the hydraulic rod, a movable groove is opened in the guide plate, a protective cover is installed on the side wall of the guide plate, a second stepper motor is installed in the protective cover, a second screw rod is installed on the output shaft of the second stepper motor, the second screw rod is rotatably installed on the inner wall of the movable groove, a movable block is assembled in the movable groove, a connecting block is installed on the movable block, a steel needle is installed on the connecting block, the steel needle moves vertically downward, and the steel needle vertically punctures the center position of the lithium battery to detect the performance of the lithium battery to provide the stability and safety indicators of the lithium battery, and then the horizontal position of the steel needle is adjusted, and the puncture steps are repeated to simulate the experimental data of the lithium battery after being punctured from various positions, which is beneficial to improving the experimental effect.

[0008] The utility model is beneficial in that:

[0009] 1. The utility model uses two clamping plates to clamp and fix the lithium battery at the moment, and the two clamping plates stop moving, thereby realizing the control of the distance between the two clamping plates. When the lithium battery is punctured, the lithium battery is deformed and its length is reduced. The control panel controls the first stepper motor to operate again, and repeats the above steps, so that the two clamping plates clamp and fix the deformed lithium battery, thereby realizing stable clamping of the lithium battery, which is beneficial to improving the clamping effect of the device.

[0010] 2. The utility model moves the steel needle vertically downward, and the steel needle vertically punctures the center of the lithium battery to detect the performance of the lithium battery to provide the stability and safety indicators of the lithium battery. Then, the horizontal position of the steel needle is adjusted and the puncture steps are repeated. The experimental data after the lithium battery is punctured from various positions can be simulated, which is beneficial to improving the experimental effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 It is a schematic diagram of a first-person perspective three-dimensional structure;

[0013] Figure 2 It is a schematic diagram of the three-dimensional structure of the fixed seat;

[0014] Figure 3 It is a schematic diagram of the three-dimensional structure of the splint;

[0015] Figure 4 It is a schematic diagram of the three-dimensional structure of the hydraulic cylinder;

[0016] Figure 5 It is a schematic diagram of the three-dimensional structure of the steel needle.

[0017] In the figure: 1. Box body; 2. Experimental chamber; 3. Box door; 4. Control panel; 5. Fixed seat; 6. Slide groove; 7. First stepper motor; 8. First screw rod; 9. Slider; 10. Sliding frame; 11. Clamp; 12. Limiting groove; 13. Limiting block; 14. First electrode sheet; 15. Second electrode sheet; 16. Plate groove; 17. Moving plate; 18. Anti-slip groove; 19. Spring; 20. Hydraulic cylinder; 21. Hydraulic rod; 22. Guide plate; 23. Moving groove; 24. Protective cover; 25. Second stepper motor; 26. Second screw rod; 27. Moving block; 28. Connecting block; 29. ​​Steel needle; 30. Indicator light; 31. Placement seat. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-3As shown, a lithium battery puncture test device includes a box body 1, an experimental chamber 2 is opened inside the box body 1, a box door 3 is installed on the box body 1, a single layer of visible explosion-proof glass is installed on the box door 3, a control panel 4 is installed on the outer wall of the box body 1, a fixing seat 5 is installed on the bottom wall of the experimental chamber 2, a slide 6 is opened on the fixing seat 5, a first stepper motor 7 is installed on the inner wall of the box body 1, a first screw rod 8 is installed on the output shaft of the first stepper motor 7, the thread directions of the first screw rod 8 are symmetrically opposite, the first screw rod 8 is rotatably installed on the inner wall of the slide 6, two sliders 9 are symmetrically assembled in the slide 6, a sliding frame 10 is installed on the slider 9, a splint 11 is installed on the sliding frame 10, an indicator light 30 is installed on the splint 11, a limiting groove 12 is opened inside the splint 11, and the limiting groove 12 A limiting block 13 is assembled inside, a first electrode sheet 14 is mounted on the side wall of the limiting block 13, a second electrode sheet 15 is mounted on the inner wall of the limiting groove 12, a plate groove 16 is opened on the side wall of the splint 11, a movable plate 17 is assembled in the plate groove 16, a placement seat 31 is mounted on the fixed seat 5, the movable plate 17 is fixedly connected to the limiting block 13, an anti-slip groove 18 is arranged on the outer wall of the movable plate 17, a plurality of springs 19 are installed between the side wall of the limiting block 13 and the inner wall of the limiting groove 12, the first electrode sheet 14 and the second electrode sheet 15 are connected to the indicator light 30 through an internal circuit, the indicator light 30 is connected to the control panel 4 through an internal circuit, and the control panel 4 is connected to the first stepper motor 7 through an internal circuit; when working, the existing lithium battery puncture experimental device punctures the lithium battery through The clamp clamps and fixes the lithium battery, but since the lithium battery is prone to deformation, the clamp cannot be quickly adjusted according to the deformation of the lithium battery, resulting in poor clamping effect of the device. By placing the lithium battery on the placement seat 31, the control panel 4 controls the operation of the first stepper motor 7, the first stepper motor 7 drives the first screw rod 8 to rotate, the first screw rod 8 drives the two sliders 9 thereon to move synchronously relative to each other, the two sliders 9 drive the two sliding frames 10 to move synchronously relative to each other, the two sliding frames 10 drive the two clamps 11 to move synchronously relative to each other, in the process of the clamp 11 moving toward the lithium battery, the moving plate 17 on the clamp 11 first contacts the lithium battery, and then the moving plate 17 is pushed into the plate slot 16 by the lithium battery, the moving plate 17 drives the limit block 13 to move horizontally, and the limit block 13 drives the first The electrode sheet 14 moves horizontally. When the clamping plate 11 is in contact with the lithium battery, the movable plate 17 is completely pushed into the plate slot 16. At this time, the first electrode sheet 14 contacts the second electrode sheet 15, so that the internal circuit of the indicator light 30 is connected. After the indicator light 30 is turned on, it will send an electrical signal to the control panel 4. The two clamping plates 11 successively contact the lithium battery to clamp the lithium battery, so that the internal circuits of the two indicator lights 30 are successively connected. The moment the control panel 4 receives the second electrical signal, the control panel 4 controls the first stepper motor 7 to stop operating. That is, the moment the two clamping plates 11 clamp the lithium battery, the first stepper motor 7 stops operating and the two clamping plates 11 stop moving, thereby realizing the control of the clamping force of the clamping plates 11 and the control of the distance between the two clamping plates 11.When the lithium battery is punctured, the lithium battery deforms and its length decreases. The control panel 4 controls the first stepper motor 7 to operate again, repeating the above steps so that the two clamping plates 11 clamp the deformed lithium battery, achieving stable clamping of the lithium battery and improving the clamping effect of the device.

[0020] See also Figure 4-5 As shown, a hydraulic cylinder 20 is installed inside the box body 1, and a hydraulic rod 21 is installed on the hydraulic cylinder 20, and a guide plate 22 is installed on the hydraulic rod 21. A movable groove 23 is opened in the guide plate 22, and a protective cover 24 is installed on the side wall of the guide plate 22. A second stepping motor 25 is installed in the protective cover 24, and a second screw rod 26 is installed on the output shaft of the second stepping motor 25. The second screw rod 26 is rotatably installed on the inner wall of the movable groove 23, and a movable block 27 is assembled in the movable groove 23, and a connecting block 28 is installed on the movable block 27, and a steel needle 29 is installed on the connecting block 28; when working, the existing lithium battery puncture experimental device cannot adjust the relative position of the steel needle 29 and the lithium battery when puncturing the lithium battery, and cannot simulate the experimental data after the lithium battery is punctured from various positions, resulting in poor experimental results. By placing the lithium battery on the placement seat 31, the two splints 11 puncture the lithium battery The battery is clamped and fixed, and then the hydraulic cylinder 20 operates, the hydraulic rod 21 drives the guide plate 22 to move vertically downward, the guide plate 22 drives the steel needle 29 to move vertically downward, and the steel needle 29 vertically punctures the center position of the lithium battery to detect the performance of the lithium battery to provide the stability and safety indicators of the lithium battery; then the hydraulic rod 21 drives the guide plate 22 to move vertically upward, the guide plate 22 drives the steel needle 29 to move vertically upward, and the steel needle 29 returns to its original position. Then the control panel 4 controls the second stepper motor 25 to operate, driving the second screw rod 26 to rotate, the second screw rod 26 drives the moving block 27 thereon to move horizontally, the moving block 27 drives the connecting block 28 to move horizontally, and the connecting block 28 drives the steel needle 29 to move horizontally. By adjusting the position of the steel needle 29 and then repeating the puncture steps, the experimental data of the lithium battery after being punctured from various positions can be simulated, which is beneficial to improving the experimental effect.

[0021] Working principle: When the existing lithium battery puncture test device punctures the lithium battery, the lithium battery is clamped and fixed by a clamp. However, since the lithium battery is easily deformed, the clamp cannot be quickly adjusted according to the deformation of the lithium battery, resulting in a poor clamping effect of the device. By placing the lithium battery on the placement seat 31, the control panel 4 controls the operation of the first stepper motor 7, the first stepper motor 7 drives the first screw rod 8 to rotate, the first screw rod 8 drives the two sliders 9 thereon to move synchronously relative to each other, the two sliders 9 drive the two sliding frames 10 to move synchronously relative to each other, the two sliding frames 10 drive the two clamps 11 to move synchronously relative to each other, and the clamps 11 move to the left and right. During the movement of the lithium battery, the movable plate 17 on the clamping plate 11 first contacts the lithium battery, and then the movable plate 17 is pushed into the plate slot 16 by the lithium battery. The movable plate 17 drives the limit block 13 to move horizontally, and the limit block 13 drives the first electrode sheet 14 to move horizontally. When the clamping plate 11 is in contact with the lithium battery, the movable plate 17 is completely pushed into the plate slot 16. At this time, the first electrode sheet 14 contacts the second electrode sheet 15, so that the internal circuit of the indicator light 30 is connected. After the indicator light 30 is turned on, it will send an electrical signal to the control panel 4. The two clamping plates 11 successively contact the lithium battery to clamp the lithium battery, so that the internal circuit of the two indicator lights 30 is connected. The circuits are connected successively. The moment the control panel 4 receives the second electrical signal, the control panel 4 controls the first stepper motor 7 to stop operating. That is, the moment the two clamps 11 clamp the lithium battery, the first stepper motor 7 stops operating and the two clamps 11 stop moving, thereby realizing the control of the clamping force of the clamps 11 and the control of the distance between the two clamps 11. When the lithium battery is punctured, the lithium battery is deformed and its length is reduced. The control panel 4 controls the first stepper motor 7 to operate again and repeats the above steps, so that the two clamps 11 clamp the deformed lithium battery and realize the stable clamping of the lithium battery, which is conducive to improving the installation. The clamping effect of the device is improved; when the existing lithium battery puncture test device punctures the lithium battery, the relative position of the steel needle 29 and the lithium battery cannot be adjusted, and the experimental data after the lithium battery is punctured from various positions cannot be simulated, resulting in poor experimental results. By placing the lithium battery on the placement seat 31, the two clamping plates 11 clamp and fix the lithium battery, and then the hydraulic cylinder 20 is operated, the hydraulic rod 21 drives the guide plate 22 to move vertically downward, and the guide plate 22 drives the steel needle 29 to move vertically downward, and the steel needle 29 vertically punctures the center position of the lithium battery to test the performance of the lithium battery, so as to provide the stability and safety indicators of the lithium battery;The hydraulic rod 21 then drives the guide plate 22 to move vertically upward, which in turn drives the steel needle 29 to move vertically upward. The steel needle 29 then returns to its original position. The control panel 4 then controls the second stepper motor 25 to operate, driving the second screw rod 26 to rotate. The second screw rod 26 drives the movable block 27 on it to move horizontally. The movable block 27 drives the connecting block 28 to move horizontally, which in turn drives the steel needle 29 to move horizontally. By adjusting the position of the steel needle 29 and repeating the puncture steps, experimental data after the lithium battery is punctured from various positions can be simulated, which helps improve the experimental effect.

[0022] The above shows and describes 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 above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A lithium battery puncture test device, characterized by: The invention comprises a box body (1), wherein an experimental chamber (2) is provided inside the box body (1), a box door (3) is installed on the box body (1), and a single-layer visual explosion-proof glass is installed on the box door (3), a control panel (4) is installed on the outer wall of the box body (1), a fixing seat (5) is installed on the bottom wall of the experimental chamber (2), and a slide groove (6) is provided on the fixing seat (5), a first stepper motor (7) is installed on the inner wall of the box body (1), and a first screw rod (8) is installed on the output shaft of the first stepper motor (7), the thread directions of the first screw rod (8) are symmetrical and opposite, the first screw rod (8) is rotatably installed on the inner wall of the slide groove (6), and the inner wall of the slide groove (6) is provided with a first screw rod (8). Two sliders (9) are symmetrically assembled, wherein a sliding frame (10) is mounted on the slider (9), a clamping plate (11) is mounted on the sliding frame (10), an indicator light (30) is mounted on the clamping plate (11), a limiting groove (12) is provided inside the clamping plate (11), a limiting block (13) is mounted inside the limiting groove (12), a first electrode sheet (14) is mounted on the side wall of the limiting block (13), a second electrode sheet (15) is mounted on the inner wall of the limiting groove (12), a plate groove (16) is provided on the side wall of the clamping plate (11), a movable plate (17) is mounted in the plate groove (16), and a placement seat (31) is mounted on the fixed seat (5).

2. A lithium battery puncture test device according to claim 1, characterized in that: The movable plate (17) is fixedly connected to the limiting block (13); an anti-slip groove (18) is provided on the outer wall of the movable plate (17); and a plurality of springs (19) are installed between the side wall of the limiting block (13) and the inner wall of the limiting groove (12).

3. The lithium battery puncture test device according to claim 2, characterized in that: The first electrode sheet (14) and the second electrode sheet (15) are connected to an indicator light (30) via an internal circuit, the indicator light (30) is connected to a control panel (4) via an internal circuit, and the control panel (4) is connected to a first stepper motor (7) via an internal circuit.

4. The lithium battery puncture test device according to claim 3, characterized in that: A hydraulic cylinder (20) is installed inside the box (1), a hydraulic rod (21) is installed on the hydraulic cylinder (20), and a guide plate (22) is installed on the hydraulic rod (21).

5. The lithium battery puncture test device according to claim 4, characterized in that: A movable groove (23) is provided in the guide plate (22), a protective cover (24) is installed on the side wall of the guide plate (22), a second stepping motor (25) is installed in the protective cover (24), a second screw rod (26) is installed on the output shaft of the second stepping motor (25), and the second screw rod (26) is rotatably installed on the inner wall of the movable groove (23).

6. The lithium battery puncture test device according to claim 5, characterized in that: A moving block (27) is assembled in the moving groove (23), a connecting block (28) is installed on the moving block (27), and a steel needle (29) is installed on the connecting block (28).

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