A lithium battery safety performance testing device

Abstract

The present invention discloses a lithium battery safety performance testing device, which relates to the technical field of testing equipment. A fixing mechanism is arranged above a rotating plate, a vibration mechanism is arranged between the fixing mechanism and the rotating plate, a support frame is fixedly connected to the upper end of a workbench, a sealing cover is arranged on the inner side of the support frame, an impact mechanism is arranged on the rear side of the sealing cover, and a blower, a heater and a refrigeration mechanism are arranged below the workbench. The equipment integrates multiple test functions such as rotation, vibration, falling and impact, and can comprehensively evaluate the safety performance of lithium batteries under various extreme conditions, thereby improving the test efficiency and accuracy; the fixing mechanism uses the clamping plates on both sides to clamp and fix the lithium battery, and the distance between the two clamping plates is adjustable, which is convenient for testing different types of batteries. The design of a sealing cover and a fixing mechanism is adopted to ensure the stability and safety of the lithium battery during the test, while preventing pollution and damage to the surrounding environment during the test.

Description

Technical Field

[0001] The present invention relates to the technical field of testing equipment, and in particular to a lithium battery safety performance testing device. Background Art

[0002] As an efficient and environmentally friendly energy storage device, lithium batteries have been widely used in various fields of modern society. With its advantages of high energy density, long life, and no memory effect, it has gradually replaced traditional lead-acid batteries, nickel-cadmium batteries, etc., and has become the mainstream power source in portable electronic devices, electric vehicles, energy storage systems and other fields. However, with the expansion of the application scope of lithium batteries, its safety performance issues have become increasingly prominent. During the charging and discharging process of lithium batteries, due to the complexity of internal chemical reactions, heat accumulation and gas release may occur, which in turn may cause safety risks such as battery expansion, leakage, and fire. Therefore, it is necessary to conduct safety performance testing on lithium batteries to ensure their stability and reliability under various conditions of use to ensure user safety and improve product quality.

[0003] Currently, the functions of lithium battery safety performance testing devices on the market are relatively simple, and they can often only test a certain aspect of lithium battery performance. To conduct a comprehensive safety performance assessment, it is usually necessary to cooperate with multiple devices to perform multiple tests, which is cumbersome and inefficient. In addition, in terms of vibration testing, existing testing devices can often only achieve vibration in a single direction, and cannot simultaneously simulate the lateral and vertical vibrations that lithium batteries may encounter during actual use, thus affecting the accuracy and comprehensiveness of the test results.

[0004] Therefore, the present application proposes a lithium battery safety performance testing device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a lithium battery safety performance testing device to solve the technical problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lithium battery safety performance testing device, comprising a workbench, the upper end of the workbench is rotatably connected to a rotating plate, the lower end of the rotating plate is fixedly connected to a connecting pipe, the lower end of the connecting pipe passes through the workbench and extends to the bottom of the workbench, a fixing mechanism is arranged above the rotating plate, a vibration mechanism is arranged between the fixing mechanism and the rotating plate, the upper end of the workbench is fixedly connected to a supporting frame, a sealing cover is arranged on the inner side of the supporting frame, a lifting electric push rod is fixedly connected to the upper end of the supporting frame, the output end of the lifting electric push rod passes through the upper side wall of the supporting frame and is fixedly connected to the upper end of the sealing cover;

[0007] The vibration mechanism comprises a movable ring and a vibration support plate, the fixing mechanism is located on the vibration support plate, a plurality of elastic telescopic rods are arranged between the movable ring and the vibration support plate, the upper and lower ends of the elastic telescopic rods are respectively connected to the adjacent side walls of the vibration support plate and the movable ring through universal joints, a rotating vibration plate is arranged between the vibration support plate and the movable ring, two lower vertical vibration blocks are fixedly connected to the upper surface of the rotating vibration plate, two upper vertical vibration blocks are fixedly connected to the lower end of the vibration support plate, the upper vertical vibration blocks are adapted to the lower vertical vibration blocks, the rotating vibration plate is elliptical, a transverse vibration rod is fixedly connected to the lower end of the vibration support plate, and the distance between the transverse vibration rod and the center of the vibration support plate is less than the radius of the major axis of the rotating vibration plate;

[0008] The lower end of the workbench is fixedly connected with a fall-lift electric push rod and a vibration motor, the output end of the vibration motor is fixedly connected with a second driving gear, the output end of the fall-lift electric push rod is rotatably connected with a transmission rod, a transmission tube is fixedly connected to the transmission rod, a plurality of matching grooves 2 are provided on the outer wall of the transmission tube, the second driving gear is matched with the second matching groove, the upper end of the transmission rod passes through the rotating plate, and passes through the movable ring and is fixedly connected to the lower end of the rotating vibration plate;

[0009] A push plate is arranged between the movable ring and the rotating plate, and the push plate is fixed on the transmission rod. Two sliding rods are fixedly connected to the upper end of the rotating plate, and a sliding block is slidably connected to the sliding rod. The sliding block is fixedly connected to the outer end of the movable ring, and the lower end of the sliding block abuts against the upper end of the rotating plate. The distance between the lower end surface of the movable ring and the upper end surface of the rotating plate is greater than the thickness of the push plate.

[0010] Preferably, a rotating motor is fixedly connected to the lower end of the workbench, a driving gear 1 is fixedly connected to the output end of the rotating motor, a plurality of matching grooves 1 are provided on the side wall of the connecting tube, and the driving gear 1 is matched with the matching groove 1.

[0011] Preferably, the fixing mechanism comprises a limit frame, the limit frame is fixed to the vibration support plate, two clamping plates and clamping adjustment bolts are symmetrically arranged on the inner side of the limit frame, the clamping adjustment bolts penetrate the side wall of the limit frame and are rotatably connected to the side wall of the clamping plate.

[0012] Preferably, an impact mechanism is provided on the rear side of the sealing cover, and the impact mechanism includes an auxiliary frame, the auxiliary frame is fixed on the rear side end of the sealing cover, the auxiliary frame is communicated with the sealing cover, the left end of the auxiliary frame is fixedly connected to a horizontal moving motor, the output end of the horizontal moving motor is fixedly connected to a moving screw rod, the right end of the moving screw rod passes through the left side wall of the auxiliary frame and is rotatably connected to the right inner wall of the auxiliary frame, a limiting slide rod is provided below the moving screw rod, the left and right ends of the limiting slide rod are respectively fixedly connected to the left and right inner walls of the auxiliary frame, a horizontal moving frame is slidably connected to the limiting slide rod, the moving screw rod passes through the horizontal moving frame and is threadedly connected to the horizontal moving frame, the rear side end of the horizontal moving frame is fixedly connected to an impact electric push rod, the output end of the impact electric push rod passes through the horizontal moving frame and is fixedly connected to a strike plate, and a front side end of the strike plate is threadedly connected with a plurality of impact cone spikes.

[0013] Preferably, a blower is fixedly connected to the lower end of the workbench, a heater and a refrigeration mechanism are fixedly connected to the output end of the blower, a hot air duct is fixedly connected to the output end of the heater, a cold air duct is fixedly connected to the output end of the refrigeration mechanism, the cold air duct and the hot air duct both pass through the workbench at one end away from the blower and extend to above the workbench, solenoid valves are arranged between the heater and refrigeration mechanism and the output end of the blower, and temperature detection sensors are arranged in the hot air duct and the cold air duct.

[0014] Preferably, the ends of the cold air duct and the hot air duct away from the blower are both located directly below the sealing cover.

[0015] Preferably, an electrical device and a charging module are provided at the upper end of the sealing cover.

[0016] Preferably, the outer diameter of the rotating vibration plate is smaller than the inner diameter of the movable ring.

[0017] Compared with the related art, the lithium battery safety performance testing device provided by the present invention has the following beneficial effects:

[0018] 1. The present invention provides a lithium battery safety performance testing device. The device fixes the position of the lithium battery through a fixing mechanism. A vibration mechanism is arranged on a workbench. The lateral vibration simulation of the vibration support plate and the lithium battery in the fixing mechanism is realized by cooperating with a rotating vibration plate and a lateral vibration rod. At the same time, the vibration simulation of the vibration support plate and the lithium battery in the vertical direction is realized by cooperating with a lower vertical vibration block and an upper vertical vibration block. The device performs lateral vibration while simulating the vertical vibration of the lithium battery, thereby being able to better simulate the state of the lithium battery during actual use and ensure the accuracy of the safety test.

[0019] 2. The present invention provides a lithium battery safety performance testing device. The device uses a rotating plate and a rotating motor to facilitate the impact mechanism to perform impact tests on different positions of the lithium battery. At the same time, the device is also equipped with a heater and a refrigeration mechanism. The hot air duct and the cold air duct simulate high and low temperature environments, which is convenient for detecting the status of the lithium battery at different temperatures. It can comprehensively evaluate the safety performance of the lithium battery under various extreme conditions, thereby improving the test efficiency and accuracy.

[0020] 3. The present invention provides a lithium battery safety performance testing device. A push plate is arranged between the movable ring and the rotating plate. When the falling and lifting electric push rod pushes the push plate and the transmission rod to move upward, the push plate pushes the movable ring, the vibration support plate, the fixing mechanism and the lithium battery to move upward. When the falling and lifting electric push rod drives the push rod and the rotating vibration plate to pass through the movable ring and move downward, the movable ring, the vibration support plate, the fixing mechanism and the lithium battery fall downward. During and after the falling process, the power supply status of the lithium battery is monitored in real time through the electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention from another angle;

[0023] Figure 3 It is a schematic diagram of the position structure of the vibration mechanism of the present invention;

[0024] Figure 4 It is a schematic diagram of the bottom structure of the workbench of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the bottom of the workbench of the present invention from another angle;

[0026] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the cross-section of the connection pipe position of the present invention;

[0028] Figure 8 It is a schematic diagram showing the structure of the push plate position of the present invention;

[0029] Fig. 9 It is a schematic diagram of the local explosion mechanism of the vibration support plate position of the present invention;

[0030] Fig.10 It is a schematic diagram showing the structure of the lower end of the vibration support plate of the present invention;

[0031] Fig.11 It is a schematic diagram of the three-dimensional structure of the fixing mechanism of the present invention;

[0032] Fig.12 It is a schematic diagram of the three-dimensional structure of the impact mechanism of the present invention.

[0033] In the figure: 1, workbench; 2, rotating plate; 3, sliding rod; 4, sliding block; 5, movable ring; 6, vibration support plate; 7, fixing mechanism; 701, limit frame; 702, clamping plate; 703, clamping adjustment bolt; 8, support frame; 9, sealing cover; 10, electrical equipment; 11, charging module; 12, lifting electric push rod; 13, auxiliary frame; 14, horizontal moving motor; 15, moving screw rod; 16, limit sliding rod; 17, horizontal moving frame; 18, impact electric push rod; 19, impact plate; 20, impact Strike cone; 21. Blower; 22. Refrigeration mechanism; 23. Heater; 24. Cold air duct; 25. Hot air duct; 26. Rotating motor; 27. Driving gear one; 28. Connecting pipe; 29. ​​Matching slot one; 30. Vibrating motor; 31. Driving gear two; 32. Transmission rod; 33. Transmission pipe; 34. Falling and lifting electric push rod; 35. Matching slot two; 36. Elastic telescopic rod; 37. Push plate; 38. Rotating vibration plate; 39. Lower vertical vibration block; 40. Upper vertical vibration block; 41. Horizontal vibration rod. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described 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; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] Embodiment 1:

[0036] See also Figure 1-Figure 7The present invention provides a technical solution: a lithium battery safety performance testing device, comprising a workbench 1, the upper end of the workbench 1 is rotatably connected to a rotating plate 2, the lower end of the rotating plate 2 is fixedly connected to a connecting pipe 28, the lower end of the connecting pipe 28 passes through the workbench 1 and extends to the bottom of the workbench 1, a fixing mechanism 7 is arranged above the rotating plate 2, a vibrating mechanism is arranged between the fixing mechanism 7 and the rotating plate 2, the upper end of the workbench 1 is fixedly connected to a supporting frame 8, a sealing cover 9 is arranged on the inner side of the supporting frame 8, an electric device 10 and a charging module 11 are arranged on the upper end of the sealing cover 9, a lifting electric push rod 12 is fixedly connected to the upper end of the supporting frame 8, the output end of the lifting electric push rod 12 passes through the upper side wall of the supporting frame 8 and is connected to the sealing cover 9. The upper end is fixedly connected, and the lower end of the workbench 1 is fixedly connected with a rotating motor 26, and the output end of the rotating motor 26 is fixedly connected with a driving gear 27. A plurality of matching grooves 29 are provided on the side wall of the connecting tube 28, and the driving gear 27 is adapted to the matching groove 29. After the position of the lithium battery to be tested is fixed, the lifting electric push rod 12 is used to push the sealing cover 9 downward, and the vibration mechanism and the lithium battery to be tested are placed in the sealing cover 9. The electrical equipment 10 and the charging module 11 are electrically connected to the lithium battery to be tested, and the charging and discharging test of the lithium battery is performed through the electrical equipment 10 and the charging module 11. At the same time, the sealing cover 9 is used to protect the lithium battery during the testing process to avoid accidents of the lithium battery during the testing process;

[0037] A blower 21 is fixedly connected to the lower end of the workbench 1, a heater 23 and a refrigeration mechanism 22 are fixedly connected to the output end of the blower 21, a hot air pipe 25 is fixedly connected to the output end of the heater 23, and a cold air pipe 24 is fixedly connected to the output end of the refrigeration mechanism 22. The cold air pipe 24 and the hot air pipe 25, one end away from the blower 21, both pass through the workbench 1 and extend above the workbench 1. Solenoid valves are arranged between the heater 23 and the refrigeration mechanism 22 and the output end of the blower 21. Temperature detection sensors are arranged in the hot air pipe 25 and the cold air pipe 24. One end of the cold air pipe 24 and the hot air pipe 25, one end away from the blower 21, is located directly below the sealing cover 9. The hot air pipe 25 and the cold air pipe 24 simulate high and low temperature environments, so as to facilitate the detection of the state of the lithium battery at different temperatures, and comprehensively evaluate the safety performance of the lithium battery under various extreme conditions, thereby improving the test efficiency and accuracy.

[0038] Embodiment 2:

[0039] See also Figure 8-Figure 11 As shown, based on the first embodiment, the present invention provides a technical solution:

[0040] The vibration mechanism includes a movable ring 5 and a vibration support plate 6, a fixing mechanism 7 is located on the vibration support plate 6, a plurality of elastic telescopic rods 36 are arranged between the movable ring 5 and the vibration support plate 6, the upper and lower ends of the elastic telescopic rods 36 are respectively connected to the adjacent side walls of the vibration support plate 6 and the movable ring 5 through universal joints, a rotating vibration plate 38 is arranged between the vibration support plate 6 and the movable ring 5, two lower vertical vibration blocks 39 are fixedly connected to the upper surface of the rotating vibration plate 38, two upper vertical vibration blocks 40 are fixedly connected to the lower end of the vibration support plate 6, the upper vertical vibration blocks 40 are adapted to the lower vertical vibration blocks 39, the rotating vibration plate 38 is elliptical, a transverse vibration rod 41 is fixedly connected to the lower end of the vibration support plate 6, the distance between the transverse vibration rod 41 and the center of the vibration support plate 6 is less than the radius of the major axis of the rotating vibration plate 38, and the outer diameter of the rotating vibration plate 38 is less than the inner diameter of the movable ring 5;

[0041] The lower end of the workbench 1 is fixedly connected with a falling and lifting electric push rod 34 and a vibration motor 30, and the output end of the vibration motor 30 is fixedly connected with a driving gear 2 31, and the output end of the falling and lifting electric push rod 34 is rotatably connected with a transmission rod 32, and a transmission tube 33 is fixedly connected to the transmission rod 32, and a plurality of matching grooves 2 35 are provided on the outer wall of the transmission tube 33, and the driving gear 2 31 is adapted to the matching grooves 2 35, and the upper end of the transmission rod 32 passes through the rotating plate 2, and passes through the movable ring 5 and is fixedly connected to the lower end of the rotating vibration plate 38. When performing a vibration test simulation, the vibration motor 30 is used to drive the driving gear 2 31 to rotate. The driving gear 31 cooperates with the matching groove 35 on the side wall of the transmission tube 33, thereby driving the transmission rod 32, the push plate 37 and the rotating vibration plate 38 to rotate, and the lower vertical vibration block 39 on the rotating vibration plate 38 and the upper vertical vibration block 40 at the lower end of the vibration support plate 6 cooperate to drive the vibration support plate 6 to vibrate in the vertical direction. At the same time, the rotating vibration plate 38 collides with the horizontal vibration rod 41, thereby driving the vibration support plate 6 and the lithium battery to be tested to vibrate in the horizontal direction. The device can better simulate the state of the lithium battery in actual use and ensure the accuracy of the safety test;

[0042] A push plate 37 is arranged between the movable ring 5 and the rotating plate 2, and the outer diameter of the push plate 37 is larger than the inner diameter of the movable ring 5, and the push plate 37 is fixed on the transmission rod 32. Two sliding rods 3 are fixedly connected to the upper end of the rotating plate 2, and a sliding block 4 is slidably connected to the sliding rod 3. The sliding block 4 is fixedly connected to the outer end of the movable ring 5, and the lower end of the sliding block 4 abuts against the upper end of the rotating plate 2. The distance between the lower end surface of the movable ring 5 and the upper end surface of the rotating plate 2 is greater than the thickness of the push plate 37. When the fall-lift electric push rod 34 pushes the push plate 37 and the transmission rod 32 to move upward, the push plate 37 pushes the movable ring 5, the vibration support plate 6, the fixing mechanism 7 and the lithium battery to move upward. When the fall-lift electric push rod 34 drives the rotating vibration plate 38 to pass through the movable ring 5 and move downward, the movable ring 5, the vibration support plate 6, the fixing mechanism 7 and the lithium battery fall downward. During and after the fall, the power supply status of the lithium battery is monitored in real time by the electrical equipment 10.

[0043] The fixing mechanism 7 includes a limit frame 701, which is fixed to the vibration support plate 6. Two clamping plates 702 and clamping adjustment bolts 703 are symmetrically arranged on the inner side of the limit frame 701. The clamping adjustment bolts 703 penetrate the side wall of the limit frame 701 and are rotatably connected to the side wall of the clamping plate 702. When in use, the two clamping plates 702 are driven to clamp the lithium battery to be tested by rotating the clamping adjustment bolts 703 on both sides.

[0044] Embodiment three:

[0045] See also Fig.12 As shown, based on the first and second embodiments, the present invention provides a technical solution:

[0046] A striking mechanism is provided at the rear side of the sealing cover 9, and the striking mechanism includes an auxiliary frame 13, the auxiliary frame 13 is fixed at the rear side end of the sealing cover 9, the auxiliary frame 13 is communicated with the sealing cover 9, the left side end of the auxiliary frame 13 is fixedly connected with a horizontal moving motor 14, the output end of the horizontal moving motor 14 is fixedly connected with a moving screw rod 15, the right side end of the moving screw rod 15 passes through the left side wall of the auxiliary frame 13, and is rotatably connected with the right inner wall of the auxiliary frame 13, a limiting slide bar 16 is provided below the moving screw rod 15, the left and right ends of the limiting slide bar 16 are respectively fixedly connected with the left and right inner walls of the auxiliary frame 13, a horizontal moving frame 17 is slidably connected on the limiting slide bar 16, the moving screw rod 15 passes through the horizontal moving frame 17, and is threadedly connected with the horizontal moving frame 17, the rear side end of the horizontal moving frame 17 is fixedly connected with an striking electric push rod 18, the output end of the striking electric push rod 18 passes through the horizontal moving frame 17, and is fixedly connected with a striking The impact plate 19 has a plurality of impact spikes 20 threadedly connected to the front side end of the impact plate 19. When a lithium battery impact test is required, the impact electric push rod 18 is used to push the impact plate 19 and the impact spikes 20 to impact the lithium battery to be tested, and the status of the electrical equipment 10 is detected. At the same time, the impact spikes 20 are detachable, and the impact effect can be changed by changing the number and position of the spikes. At the same time, the horizontal moving motor 14 is used to drive the moving screw 15 to rotate, thereby driving the horizontal moving frame 17, the impact electric push rod 18 and the impact plate 19 to move in the left and right directions, thereby changing different impact positions; at the same time, the rotating motor 26 is used to drive the driving gear 27 to rotate, and the driving gear 27 is used to cooperate with the matching groove 29 on the outer wall of the connecting tube 28 to drive the rotating plate 2, the movable ring 5, the vibration support plate 6 and the lithium battery to be tested to rotate, thereby facilitating the impact test of different surfaces of the lithium battery.

[0047] Working principle: When in use, the lifting electric push rod 12 is used to drive the sealing cover 9 to move upward, and the lithium battery to be tested is placed in the limit frame 701. The two clamping plates 702 are driven to clamp the lithium battery to be tested by rotating the clamping adjustment bolts 703 on both sides.

[0048] After the position of the lithium battery to be tested is fixed, the sealing cover 9 is pushed downward by the lifting electric push rod 12, and the vibration mechanism and the lithium battery to be tested are placed in the sealing cover 9. The electrical equipment 10 and the charging module 11 are electrically connected to the lithium battery to be tested.

[0049] When performing vibration test simulation, the vibration motor 30 is used to drive the driving gear 2 31 to rotate, and the driving gear 2 31 cooperates with the matching groove 2 35 on the side wall of the transmission tube 33 to drive the transmission rod 32, the push plate 37 and the rotating vibration plate 38 to rotate, and the lower vertical vibration block 39 on the rotating vibration plate 38 and the upper vertical vibration block 40 at the lower end of the vibration support plate 6 are used to drive the vibration support plate 6 to vibrate in the vertical direction. At the same time, the rotating vibration plate 38 is used to collide with the horizontal vibration rod 41, thereby driving the vibration support plate 6 and the lithium battery to be tested to cooperate in the horizontal direction. The device can better simulate the state of the lithium battery in actual use and ensure the accuracy of the safety test;

[0050] When a lithium battery impact test is required, the impact electric push rod 18 is used to push the impact plate 19 and the impact cone thorn 20 to impact the lithium battery to be tested, and the state of the electrical equipment 10 is detected. At the same time, the impact cone thorn 20 is detachable, and the impact effect is changed by changing the number and position of the impact cone thorn 20. At the same time, the horizontal moving motor 14 is used to drive the moving screw rod 15 to rotate, thereby driving the horizontal moving frame 17, the impact electric push rod 18 and the impact plate 19 to move in the left and right directions, thereby changing different impact positions;

[0051] At the same time, the rotating motor 26 is used to drive the driving gear 27 to rotate, and the driving gear 27 cooperates with the matching groove 29 on the outer wall of the connecting tube 28 to drive the rotating plate 2, the movable ring 5, the vibration support plate 6 and the lithium battery to be tested to rotate, so as to perform impact tests on different surfaces of the lithium battery;

[0052] In this device, a push plate 37 is arranged between the movable ring 5 and the rotating plate 2. When the falling and lifting electric push rod 34 pushes the push plate 37 and the transmission rod 32 to move upward, the push plate 37 pushes the movable ring 5, the vibration support plate 6, the fixing mechanism 7 and the lithium battery to move upward. When the falling and lifting electric push rod 34 drives the push rod and the rotating vibration plate 38 to pass through the movable ring 5 and move downward, the movable ring 5, the vibration support plate 6, the fixing mechanism 7 and the lithium battery fall downward. During and after the falling process, the power supply status of the lithium battery is monitored in real time through the electrical equipment 10. At the same time, the device is also equipped with a heater 23 and a refrigeration mechanism 22. The hot air duct 25 and the cold air duct 24 simulate high and low temperature environments, which is convenient for detecting the status of the lithium battery at different temperatures, and can comprehensively evaluate the safety performance of the lithium battery under various extreme conditions, thereby improving the test efficiency and accuracy.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery safety performance testing device, comprising a workbench (1), characterized in that: The upper end of the workbench (1) is rotatably connected to a rotating plate (2), the lower end of the rotating plate (2) is fixedly connected to a connecting pipe (28), the lower end of the connecting pipe (28) passes through the workbench (1) and extends to the bottom of the workbench (1), a fixing mechanism (7) is arranged above the rotating plate (2), a vibration mechanism is arranged between the fixing mechanism (7) and the rotating plate (2), the upper end of the workbench (1) is fixedly connected to a support frame (8), a sealing cover (9) is arranged on the inner side of the support frame (8), the upper end of the support frame (8) is fixedly connected to a lifting electric push rod (12), the output end of the lifting electric push rod (12) passes through the upper side wall of the support frame (8) and is fixedly connected to the upper end of the sealing cover (9); The vibration mechanism comprises a movable ring (5) and a vibration support plate (6); the fixing mechanism (7) is located on the vibration support plate (6); a plurality of elastic telescopic rods (36) are arranged between the movable ring (5) and the vibration support plate (6); the upper and lower ends of the elastic telescopic rods (36) are respectively connected to the adjacent side walls of the vibration support plate (6) and the movable ring (5) through universal joints; a rotating vibration plate (38) is arranged between the vibration support plate (6) and the movable ring (5); two lower vertical vibration blocks (39) are fixedly connected to the upper surface of the rotating vibration plate (38); two upper vertical vibration blocks (40) are fixedly connected to the lower end of the vibration support plate (6); the upper vertical vibration blocks (40) are matched with the lower vertical vibration blocks (39); the rotating vibration plate (38) is elliptical; a transverse vibration rod (41) is fixedly connected to the lower end of the vibration support plate (6); the distance between the transverse vibration rod (41) and the center of the vibration support plate (6) is less than the radius of the major axis of the rotating vibration plate (38); The lower end of the workbench (1) is fixedly connected to a falling and lifting electric push rod (34) and a vibration motor (30); the output end of the vibration motor (30) is fixedly connected to a second driving gear (31); the output end of the falling and lifting electric push rod (34) is rotatably connected to a transmission rod (32); a transmission tube (33) is fixedly connected to the transmission rod (32); a plurality of second matching grooves (35) are provided on the outer wall of the transmission tube (33); the second driving gear (31) is matched with the second matching grooves (35); the upper end of the transmission rod (32) passes through the rotating plate (2), and passes through the movable ring (5) to be fixedly connected to the lower end of the rotating vibration plate (38); A push plate (37) is provided between the movable ring (5) and the rotating plate (2), and the push plate (37) is fixed on the transmission rod (32). Two sliding rods (3) are fixedly connected to the upper end of the rotating plate (2), and a sliding block (4) is slidably connected to the sliding rod (3). The sliding block (4) is fixedly connected to the outer end of the movable ring (5), and the lower end of the sliding block (4) abuts against the upper end of the rotating plate (2). The distance between the lower end surface of the movable ring (5) and the upper end surface of the rotating plate (2) is greater than the thickness of the push plate (37).

2. A lithium battery safety performance testing device according to claim 1, characterized in that: The lower end of the workbench (1) is fixedly connected to a rotating motor (26), and the output end of the rotating motor (26) is fixedly connected to a driving gear 1 (27). A plurality of matching grooves 1 (29) are formed on the side wall of the connecting tube (28), and the driving gear 1 (27) is matched with the matching grooves 1 (29).

3. A lithium battery safety performance testing device according to claim 1, characterized in that: The fixing mechanism (7) comprises a limit frame (701), the limit frame (701) being fixed to the vibration support plate (6), two clamping plates (702) and clamping adjustment bolts (703) being symmetrically arranged inside the limit frame (701), the clamping adjustment bolts (703) penetrating the side wall of the limit frame (701) and being rotatably connected to the side wall of the clamping plate (702).

4. A lithium battery safety performance testing device according to claim 1, characterized in that: The rear side of the sealing cover (9) is provided with an impact mechanism, the impact mechanism comprising an auxiliary frame (13), the auxiliary frame (13) being fixed to the rear side end of the sealing cover (9), the auxiliary frame (13) being in communication with the sealing cover (9), the left side end of the auxiliary frame (13) being fixedly connected to a horizontal moving motor (14), the output end of the horizontal moving motor (14) being fixedly connected to a moving lead screw (15), the right side end of the moving lead screw (15) passing through the left side wall of the auxiliary frame (13) and being rotatably connected to the right side inner wall of the auxiliary frame (13), and a limit slide rod (16) being provided below the moving lead screw (15). ), the left and right ends of the limit slide bar (16) are respectively fixedly connected to the left and right inner walls of the auxiliary frame (13), the limit slide bar (16) is slidably connected to a horizontal moving frame (17), the moving screw rod (15) passes through the horizontal moving frame (17) and is threadedly connected to the horizontal moving frame (17), the rear side end of the horizontal moving frame (17) is fixedly connected to an impact electric push rod (18), the output end of the impact electric push rod (18) passes through the horizontal moving frame (17) and is fixedly connected to an impact plate (19), and the front side end of the impact plate (19) is threadedly connected to a plurality of impact cone spikes (20).

5. A lithium battery safety performance testing device according to claim 1, characterized in that: The lower end of the workbench (1) is fixedly connected to a blower (21); the output end of the blower (21) is fixedly connected to a heater (23) and a refrigeration mechanism (22); the output end of the heater (23) is fixedly connected to a hot air pipe (25); the output end of the refrigeration mechanism (22) is fixedly connected to a cold air pipe (24); the ends of the cold air pipe (24) and the hot air pipe (25) away from the blower (21) both pass through the workbench (1) and extend to above the workbench (1); solenoid valves are provided between the heater (23) and the refrigeration mechanism (22) and the output end of the blower (21); and temperature detection sensors are provided in the hot air pipe (25) and the cold air pipe (24).

6. A lithium battery safety performance testing device according to claim 5, characterized in that: The ends of the cold air pipe (24) and the hot air pipe (25) away from the blower (21) are both located directly below the sealing cover (9).

7. A lithium battery safety performance testing device according to claim 1, characterized in that: An electrical device (10) and a charging module (11) are provided at the upper end of the sealing cover (9).

8. A lithium battery safety performance testing device according to claim 1, characterized in that: The outer diameter of the rotating vibration plate (38) is smaller than the inner diameter of the movable ring (5).

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