Equipment for testing electrical performance of ternary lithium ion battery electrode material

Abstract

The invention relates to the technical field of battery research, development and detection, in particular to a ternary lithium ion battery electrode material electrical performance test device, which comprises a box body and a lithium battery body, the top of the box body is not closed, and the outer walls of the two sides of the box body are symmetrically and slidably connected with U-shaped lifting plates respectively; a mounting plate is fixedly connected among the bottom ends of the four U-shaped lifting plates, the mounting plate is located in the box body, and an annular shell is fixedly connected to the position, close to the middle, of the top of the mounting plate. The mounting plate and the lithium battery body integrally descend into the box body, and meanwhile, the top of the box body is closed by the two top covers, so that the deflagration lithium battery body is sealed in the box body, and the problems that fire possibly spreads quickly, irreversible damage is caused to test equipment, and the test efficiency is high are effectively solved. And the life safety of workers can be seriously threatened.

Description

Technical Field

[0001] The present invention relates to the technical field of battery research and development and testing, and in particular to an electrical performance testing device for ternary lithium-ion battery electrode materials. Background Art

[0002] With the booming new energy industry, ternary lithium-ion batteries, with their high energy density and excellent cycle performance, have become the core power source for electric vehicles, energy storage power stations and other fields. The electrical performance of ternary lithium-ion battery electrode materials directly determines the battery's charge and discharge efficiency, service life and safety. Therefore, accurate electrical performance testing is a key step in promoting the advancement of battery technology. Among them, fast charge and discharge performance testing, as an important means of simulating extreme battery usage scenarios, can effectively evaluate the performance of electrode materials at high current densities, but it also poses a huge challenge to the testing equipment.

[0003] At present, the existing electrical performance testing equipment for ternary lithium-ion battery electrode materials on the market has obvious technical shortcomings when performing fast charging and discharging tests. During the fast charging and discharging process, the electrode material generates a large amount of Joule heat due to the large current passing through, causing the electrode material temperature to continue to rise, which is very prone to overheating. In severe cases, it may even cause explosions. When an explosion accident occurs, the existing testing equipment lacks a fast and effective emergency response mechanism. It usually relies on staff to use handheld fire extinguishers to extinguish the fire. However, fire extinguishers are mostly stored in a fixed location far away from the testing area. It takes a certain amount of time for staff to discover the fire and get the fire extinguishers to arrive at the scene. Lithium battery explosions are characterized by fast speed and fierce fire. In this short time difference, the fire may spread rapidly, not only causing irreversible damage to the testing equipment, but also seriously threatening the lives of staff. At the same time, it may trigger chain combustion of surrounding objects, causing significant property losses and safety hazards. This greatly limits the safe and efficient implementation of electrical performance testing of ternary lithium-ion battery electrode materials, and it is difficult to meet actual production and R&D needs.

[0004] Based on this, the present invention discloses an electrical performance testing device for battery electrode materials for ternary lithium ion batteries. Summary of the Invention

[0005] In order to solve the problem raised in the background technology that after a lithium battery explodes, the fire may spread rapidly within this short time difference, which will not only cause irreversible damage to the test equipment, but also seriously threaten the life safety of the staff, and may also trigger a chain combustion of surrounding objects, the present invention provides an electrical performance testing device for ternary lithium-ion battery electrode materials, which includes a box body and a lithium battery body, the top of the box body is not closed, and the outer walls on both sides of the box body are symmetrically slidably connected with U-shaped lifting plates, and a mounting plate is fixedly connected between the bottom ends of the four U-shaped lifting plates, the mounting plate is located in the box body, and the top of the mounting plate is fixedly connected to an annular shell near the middle, the lithium battery body is located in the annular shell, and the bottom of the box is fixedly connected to support legs near the four corners; A lifting assembly, comprising a first gear, the outer wall of one side of the box being symmetrically and movably connected to the first gear, and the lifting assembly being used to drive the mounting plate and the lithium battery body downward; A fixing mechanism, comprising a positioning pressure plate, the positioning pressure plate being arranged in a V shape, and a positioning pressure plate being symmetrically arranged above the mounting plate. The fixing mechanism is used to fix the lithium battery body when the mounting plate is lowered, and the fixing mechanism is used in conjunction with the lifting assembly; The protective mechanism includes a cover plate, and the cover plates are respectively provided on both sides of the box body. The protective mechanism is used to close the top of the box body, and the protective mechanism is used in conjunction with the lifting component.

[0006] Preferably, the lifting assembly also includes a transmission mechanism and a first tooth groove, wherein the two U-shaped lifting plates are respectively provided with evenly distributed first tooth grooves on one side opposite to the first gear, the first tooth grooves are meshed with the first gear, and the outer walls on both sides of the box body are symmetrically fixedly connected with support plates, the support plates are arranged in a triangular shape, and the tops of the inner cavities of the four support plates are respectively fixedly connected with fixed plates, and a transmission shaft is installed between two adjacent fixed plates through bearings, and the two ends of the transmission shafts respectively pass through the inner ring of the bearings and extend to the outside of the support plates, one side of the first gear and one end of the transmission shaft are respectively fixedly connected with a first groove wheel, and a first belt is installed between the two adjacent first groove wheels.

[0007] Preferably, the transmission mechanism includes a servo motor, the servo motor is installed on one side of the box, one end of the transmission shaft and the output end of the servo motor are respectively fixedly connected with second sheaves, and a second belt is installed between the two second sheaves.

[0008] Preferably, the fixing mechanism also includes a vertical plate, and the vertical plate is movably connected to the two sides of the vertical plate away from the center of the positioning pressure plate, and the bottom end of the vertical plate is fixedly connected to the top of the mounting plate. A movable opening is opened on one side of the positioning pressure plate, and a round rod is provided in the movable opening. The two ends of the round rod extend to the outside of the movable opening and are movably connected to a movable rod, and the bottom end of the movable rod passes through the mounting plate and is movably connected to the mounting plate. A buoyancy plate is installed between the bottom ends of the two adjacent movable rods, and a limiting tube is respectively sleeved on the side walls of the two movable rods, and the bottom end of the limiting tube is fixedly connected to the top of the mounting plate.

[0009] Preferably, the protective mechanism also includes an L-shaped limit plate, the tops of the four support plates are respectively fixedly connected with L-shaped limit plates, the cover plate is located between the two L-shaped limit plates, the bottoms of the two cover plates are respectively provided with second tooth grooves, and the two side walls of the transmission shafts are respectively fixedly connected with second gears near the middle, and the second gears are meshed with the second tooth grooves.

[0010] Furthermore, a top cover is fixedly connected between the tops of the four U-shaped lifting plates, a thermal sensor is installed on the top of the top cover, and the bottom end of the thermal sensor passes through the top cover and extends to the bottom of the top cover.

[0011] Furthermore, the top of the mounting plate is provided with evenly distributed first water holes, and the top of the mounting plate is provided with evenly distributed second water holes near the middle, and the second water holes are located on the inner side of the annular shell.

[0012] Furthermore, sliding grooves are symmetrically provided on the outer walls on both sides of the box body, and the inner wall on one side of the U-shaped lifting plate extends into the sliding grooves.

[0013] Furthermore, the two positioning pressure plates are both made of 304 stainless steel.

[0014] Furthermore, the mounting plate and the annular shell are both made of 304 stainless steel.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In this ternary lithium-ion battery electrode material electrical performance testing equipment, through the mutual cooperation between the U-shaped lifting plate, the mounting plate, the thermal sensor, the annular shell and the lifting assembly, if the lithium battery body overheats or explodes, the thermal sensor can detect the thermal abnormality and start the servo motor, so that the mounting plate and the lithium battery body are lowered into the box as a whole. At the same time, the two top covers close the top of the box, so as to seal the explosive lithium battery body inside the box, thereby effectively solving the problem that the fire may spread rapidly, not only causing irreversible damage to the test equipment, but also seriously threatening the lives of the staff; 2. In this ternary lithium-ion battery electrode material electrical performance testing equipment, through the mutual cooperation between the positioning pressure plate, the movable rod, the buoyancy plate, the annular shell and the lifting assembly, it is possible to pre-inject an appropriate amount of fire extinguishing agent into the box body. When the lithium battery body explodes, the mounting plate will drop to make the buoyancy plate contact with the fire extinguishing agent and push the movable rod through the buoyancy, so that the positioning pressure plate clamps the lithium battery body when it swings downward, so that the lithium battery body will not jump due to the explosion after being immersed in the fire extinguishing agent, which can effectively improve the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall rear view structure of the present invention; Figure 3 It is a schematic diagram of the overall bottom-up structure of the present invention; Figure 4 Schematic diagram of the internal structure of the box of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the mounting plate of the present invention; Figure 6 This is a bottom view of the mounting plate of the present invention; Figure 7 Schematic diagram of the position distribution of the fixing plate of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the positioning plate of the present invention; Figure 9 For the present invention Figure 1 A magnified view of point A in the figure; Figure 10 For the present invention Figure 3 Enlarged view of point B in .

[0017] The meaning of each number in the figure is: 1. Box body; 2. U-shaped lifting plate; 3. Mounting plate; 4. Top cover; 5. Ring shell; 6. Lithium battery body; 7. Thermal sensor; 8. Support plate; 9. L-shaped limit plate; 10. Cover plate; 11. First gear; 12. First tooth groove; 13. First groove pulley; 14. First belt; 15. Fixed plate; 16. Drive shaft; 17. Second gear; 18. Second tooth groove; 19. Second groove pulley; 20. Servo motor; 21. Second belt; 22. Positioning pressure plate; 23. Vertical plate; 24. Movable opening; 25. Round rod; 26. Movable rod; 27. Limiting tube; 28. Buoyancy plate; 29. ​​First water hole; 30. Second water hole; 31. Support leg DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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] After a lithium battery explodes, the fire may spread rapidly within this short time difference, which will not only cause irreversible damage to the testing equipment, but also seriously threaten the life safety of the staff. At the same time, it may trigger a chain reaction of fire in surrounding objects. The present invention provides an electrical performance testing device for ternary lithium-ion battery electrode materials.

[0020] To this end, the present invention provides a ternary lithium ion battery electrode material electrical performance testing equipment, see Figures 1-10 As shown, it includes a box body 1 and a lithium battery body 6. The top of the box body 1 is not closed. The outer walls on both sides of the box body 1 are symmetrically connected to U-shaped lifting plates 2 for sliding movement. The bottom ends of the four U-shaped lifting plates 2 are fixedly connected to a mounting plate 3. The mounting plate 3 is located in the box body 1. The top of the mounting plate 3 is fixedly connected to an annular shell 5 near the middle. The lithium battery body 6 is located in the annular shell 5. The bottom of the box 1 is fixedly connected to support legs 31 near the four corners; a lifting component, the lifting component includes a first gear 11, and the outer wall on one side of the box body 1 is symmetrically connected to the first gear. Wheel 11, the lifting assembly is used to drive the mounting plate 3 and the lithium battery body 6 to descend; the fixing mechanism, the fixing mechanism includes a positioning pressure plate 22, the positioning pressure plate 22 is set in a V shape, and the positioning pressure plates 22 are symmetrically arranged above the mounting plate 3. The fixing mechanism is used to fix the lithium battery body 6 when the mounting plate 3 descends, and the fixing mechanism is used in conjunction with the lifting assembly; the protective mechanism, the mechanism includes a cover plate 10, and the cover plates 10 are respectively arranged on both sides of the box body 1. The protective mechanism is used to close the top of the box body 1, and the protective mechanism is used in conjunction with the lifting assembly.

[0021] See also Figure 1-Figure 7As shown, the lifting assembly also includes a transmission mechanism and a first tooth groove 12, wherein the two U-shaped lifting plates 2 are respectively provided with a uniformly distributed first tooth groove 12 on one side opposite to the first gear 11, and the first tooth groove 12 is meshed with the first gear 11. The outer walls on both sides of the box body 1 are symmetrically fixedly connected with support plates 8, and the support plates 8 are arranged in a triangular shape. The tops of the inner cavities of the four support plates 8 are respectively fixedly connected with fixed plates 15. A transmission shaft 16 is installed between the two adjacent fixed plates 15 through a bearing. The two ends of the two transmission shafts 16 respectively pass through the inner ring of the bearing and extend to the outside of the support plate 8. One side of the first gear 11 and one end of the transmission shaft 16 are respectively fixedly connected with the first groove wheel 13. A first belt 14 is installed between the two first groove pulleys 13 nearby, the transmission mechanism includes a servo motor 20, a servo motor 20 is installed on one side of the box body 1, one end of the transmission shaft 16 and the output end of the servo motor 20 are respectively fixedly connected with a second groove pulley 19, a second belt 21 is installed between the two second groove pulleys 19, the protective mechanism also includes an L-shaped limit plate 9, the tops of the four support plates 8 are respectively fixedly connected with L-shaped limit plates 9, the cover plate 10 is located between the two L-shaped limit plates 9, and the bottoms of the two cover plates 10 are respectively provided with second tooth grooves 18, and second gears 17 are respectively fixedly connected to the side walls of the two transmission shafts 16 near the middle, and the second gear 17 is meshed with the second tooth groove 18.

[0022] During operation, an appropriate amount of fire extinguishing agent can be injected into the box body 1. In an emergency, the lifting assembly can drive the mounting plate 3 and the lithium battery body 6 to descend as a whole into the box body 1, so that the lithium battery body 6 is completely immersed in the fire extinguishing agent. The fire extinguishing agent, the top cover 4 and the cover plate 10 can block the spray of the lithium battery body 6, preventing the flame from spreading to the outside of the box body 1. The fire extinguishing agent can further prevent the air from contacting the lithium battery body 6, thereby improving the fire extinguishing effect.

[0023] The servo motor 20 in this technical solution is a relatively mature driving device in the prior art and is relatively common on the market. Its usage and working principle are common knowledge among people in this field, so they are not described in detail in this technical solution. In addition, the method for testing the electrical properties of battery electrode materials is a relatively common technology in the prior art and is common knowledge among people in this field, so it is not described in detail in this technical solution.

[0024] See also Figure 5 and Figure 6As shown, the fixing mechanism also includes a vertical plate 23, and the vertical plates 23 are movably connected to the two sides away from the center of the positioning pressure plate 22. The bottom end of the vertical plate 23 is fixedly connected to the top of the mounting plate 3. A movable opening 24 is opened on one side of the positioning pressure plate 22, and a round rod 25 is arranged in the movable opening 24. The two ends of the round rod 25 extend to the outside of the movable opening 24 and are movably connected to the movable rod 26. The bottom end of the movable rod 26 passes through the mounting plate 3 and is movably connected to the mounting plate 3. A buoyancy plate 28 is installed between the bottom ends of the two adjacent movable rods 26. The side walls of the two movable rods 26 are respectively provided with limiting tubes 27, and the bottom ends of the limiting tubes 27 are fixedly connected to the top of the mounting plate 3.

[0025] During operation, the lithium battery body 6 that explodes may shake or jump, and when the lithium battery body 6 is immersed in the fire extinguishing agent, it may float. Therefore, when in use, when the mounting plate 3 descends, the buoyancy generated by the contact between the buoyancy plate 28 and the fire extinguishing agent, the reaction force pushes the positioning pressure plate 22 to swing downward and contact the top edge of the lithium battery body 6. The buoyancy can continuously push the positioning pressure plate 22 to clamp the lithium battery body 6. At the same time, the annular shell 5 can limit the range of movement of the lithium battery body 6, which can effectively prevent the lithium battery body 6 from jumping during explosion, thereby effectively improving the safety of use.

[0026] Among them, a top cover 4 is fixedly connected between the tops of the four U-shaped lifting plates 2, and a thermal sensor 7 is installed on the top of the top cover 4. The bottom end of the thermal sensor 7 passes through the top cover 4 and extends to the bottom of the top cover 4. The thermal sensor 7 in this technical solution is an existing common device and will not be elaborated here.

[0027] In addition, evenly distributed first water holes 29 are opened on the top of the mounting plate 3, and evenly distributed second water holes 30 are opened near the middle of the top of the mounting plate 3. The second water holes 30 are located on the inner side of the annular shell 5. Through the first water holes 29 and the second water holes 30, the fire extinguishing agent can quickly reach the top of the mounting plate 3, so that the lithium battery body 6 is immersed in the fire extinguishing agent.

[0028] Among them, the outer walls on both sides of the box body 1 are symmetrically provided with sliding grooves, and the inner wall on one side of the U-shaped lifting plate 2 extends into the sliding groove. The sliding groove can limit the lifting and lowering of the U-shaped lifting plate 2, so that the U-shaped lifting plate 2 will not be displaced left and right when it is lifted or lowered, and it is more beneficial to drive the four U-shaped lifting plates 2 to descend at the same time during transmission, which is more practical and stable.

[0029] In addition, the two positioning plates 22 are both made of 304 stainless steel. When in use, the positioning plates 22 made of 304 stainless steel can withstand the temperature of the lithium battery body 6 explosion, so that the positioning plates 22 will not melt due to high temperature.

[0030] Among them, the material of the mounting plate 3 and the annular shell 5 are both 304 stainless steel. When in use, because the mounting plate 3 and the annular shell 5 are in contact with the lithium battery body 6, high-temperature resistant materials need to be set to avoid melting or deformation during use.

[0031] To sum up, the problem that after a lithium battery explodes, the fire may spread rapidly within a short time difference, which will not only cause irreversible damage to the testing equipment, but also seriously threaten the life safety of the staff, and may also trigger a chain combustion of surrounding objects is effectively solved. The present invention provides an electrical performance testing device for battery electrode materials for ternary lithium ions.

[0032] Working principle: When the present invention is in use, first place the box body 1 where it is needed, and inject an appropriate amount of fire extinguishing agent into the box body 1 so that the horizontal surface of the fire extinguishing agent contacts the bottom of the buoyancy plate 28. Next, the lithium battery body 6 to be tested can be placed in the annular shell 5, and then tested by the test equipment of the prior art. During the test, if the lithium battery body 6 explodes, the thermal sensor 7 will detect the temperature abnormality and start the servo motor 20 by controlling the power supply. The servo motor 20 drives the transmission shaft 16 and the first groove wheel 13 to rotate counterclockwise through the second belt 21. Synchronously, the first groove wheel 13 drives one of the first gears 11 to rotate counterclockwise through the first belt 14, and the first gear 11 drives the U-shaped lift through the first tooth groove 12. The plate 2 and the top cover 4 descend, and the U-shaped lifting plate 2 drives the mounting plate 3, the annular shell 5 and the lithium battery body 6 to descend and immerse into the interior of the box 1. When the mounting plate 3 descends, due to the buoyancy of the buoyancy plate 28, the reaction force of the movable rod 26 pushes the positioning pressure plate 22 to swing downward and contact the top of the lithium battery body 6, thereby clamping the lithium battery body 6. In this way, the lithium battery body 6 will not shake or jump in the box 1 during explosion, thereby effectively improving the safety of use. When the mounting plate 3 sinks into the box 1, the fire extinguishing agent in the box 1 will reach the top of the mounting plate 3 through the first water hole 29 and the second water hole 30, and submerge the lithium battery body 6. In this way, after the lithium battery body 6 is completely immersed in the fire extinguishing agent, it is cooled and extinguished by the fire extinguishing agent.

[0033] When the mounting plate 3 descends, the first groove wheels 13 on both sides of one side rotate, which also drives the second gear 17 to rotate, so that the cover plate 10 slides toward the box body 1. In this way, when the mounting plate 3 descends to the limit, the two cover plates 10 close the top of the box body 1. At this time, the top cover 4 is located above the two cover plates 10. Through the two layers of protection, the explosion and eruption of the lithium battery body 6 are effectively blocked, which can effectively improve its safety in use.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An electrical performance testing device for ternary lithium-ion battery electrode materials, comprising a housing (1) and a lithium battery body (6), characterized in that: The top of the box body (1) is not closed, and the outer walls on both sides of the box body (1) are symmetrically slidably connected to U-shaped lifting plates (2), and the bottom ends of the four U-shaped lifting plates (2) are fixedly connected to a mounting plate (3), and the mounting plate (3) is located in the box body (1). The top of the mounting plate (3) is fixedly connected to an annular shell (5) near the middle, and the lithium battery body (6) is located in the annular shell (5). The bottom of the box body (1) is fixedly connected to support legs (31) near the four corners. A lifting assembly, the lifting assembly comprising a first gear (11), an outer wall on one side of the box body (1) being symmetrically and movably connected to the first gear (11), the lifting assembly being used to drive the mounting plate (3) and the lithium battery body (6) to descend; A fixing mechanism, the fixing mechanism comprising a positioning pressure plate (22), the positioning pressure plate (22) being arranged in a V-shape, the positioning pressure plate (22) being symmetrically arranged above the mounting plate (3), the fixing mechanism being used to fix the lithium battery body (6) when the mounting plate (3) descends, and the fixing mechanism being used in conjunction with the lifting assembly; A protective mechanism, comprising a cover plate (10), with the cover plates (10) being provided on both sides of the box body (1), the protective mechanism being used to close the top of the box body (1), and the protective mechanism being used in conjunction with a lifting assembly.

2. The electrical performance testing equipment for ternary lithium-ion battery electrode materials according to claim 1, characterized in that: The lifting assembly further comprises a transmission mechanism and a first tooth groove (12), wherein the two U-shaped lifting plates (2) are respectively provided with uniformly distributed first tooth grooves (12) on one side opposite to the first gear (11), and the first tooth grooves (12) are meshed with the first gear (11). The outer walls on both sides of the box body (1) are symmetrically fixedly connected with support plates (8), and the support plates (8) are arranged in a triangular shape. The tops of the inner cavities of the four support plates (8) are respectively fixedly connected with fixed plates (15). A transmission shaft (16) is installed between two adjacent fixed plates (15) through bearings, and the two ends of the transmission shafts (16) respectively pass through the inner ring of the bearing and extend to the outside of the support plate (8). One side of the first gear (11) and one end of the transmission shaft (16) are respectively fixedly connected with a first groove wheel (13), and a first belt (14) is installed between the two adjacent first groove wheels (13).

3. The electrical performance testing equipment for ternary lithium-ion battery electrode materials according to claim 2, characterized in that: The transmission mechanism includes a servo motor (20), the servo motor (20) is installed on one side of the box (1), one end of the transmission shaft (16) and the output end of the servo motor (20) are respectively fixedly connected to second sheaves (19), and a second belt (21) is installed between the two second sheaves (19).

4. The electrical performance testing equipment for ternary lithium-ion battery electrode materials according to claim 1, characterized in that: The fixing mechanism further comprises a vertical plate (23), and the vertical plate (23) is movably connected to two sides of the vertical plate (23) away from the center of the positioning pressure plate (22), and the bottom end of the vertical plate (23) is fixedly connected to the top of the mounting plate (3). A movable opening (24) is opened on one side of the positioning pressure plate (22), and a round rod (25) is arranged in the movable opening (24). The two ends of the round rod (25) respectively extend to the outside of the movable opening (24) and are movably connected to a movable rod (26). The bottom end of the movable rod (26) passes through the mounting plate (3) and is movably connected to the mounting plate (3). A buoyancy plate (28) is installed between the bottom ends of two adjacent movable rods (26). A limiting tube (27) is respectively sleeved on the side walls of the two movable rods (26), and the bottom end of the limiting tube (27) is fixedly connected to the top of the mounting plate (3).

5. The electrical performance testing equipment for ternary lithium-ion battery electrode materials according to claim 2, characterized in that: The protection mechanism further comprises an L-shaped limiting plate (9), the tops of the four support plates (8) are respectively fixedly connected to the L-shaped limiting plates (9), the cover plate (10) is located between the two L-shaped limiting plates (9), the bottoms of the two cover plates (10) are respectively provided with a second tooth groove (18), and the side walls of the two transmission shafts (16) are respectively fixedly connected near the middle with a second gear (17), and the second gear (17) is meshed with the second tooth groove (18).

6. The electrical performance testing equipment for ternary lithium-ion battery electrode materials according to claim 1, characterized in that: A top cover (4) is fixedly connected between the tops of the four U-shaped lifting plates (2), a thermal sensor (7) is installed on the top of the top cover (4), and the bottom end of the thermal sensor (7) passes through the top cover (4) and extends to the bottom of the top cover (4).

7. The electrical performance testing equipment for ternary lithium-ion battery electrode materials according to claim 1, characterized in that: The top of the mounting plate (3) is provided with uniformly distributed first water holes (29), and the top of the mounting plate (3) is provided with uniformly distributed second water holes (30) near the middle, and the second water holes (30) are located inside the annular shell (5).

8. The electrical performance testing equipment for ternary lithium-ion battery electrode materials according to claim 1, characterized in that: The outer walls on both sides of the box body (1) are symmetrically provided with sliding grooves, and the inner wall on one side of the U-shaped lifting plate (2) extends into the sliding groove.

9. The electrical performance testing equipment for ternary lithium-ion battery electrode materials according to claim 1, characterized in that: The two positioning pressing plates (22) are both made of 304 stainless steel.

10. The electrical performance testing equipment for ternary lithium-ion battery electrode materials according to claim 1, characterized in that: The mounting plate (3) and the annular shell (5) are both made of 304 stainless steel.

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