A kind of ternary lithium ion battery electrode material electric performance test equipment

Abstract

The present application relates to the technical fields of battery research and detection, in particular to a kind of battery electrode material electric performance test equipment for ternary lithium ion, it includes box and lithium battery body, the top of the box is not closed arrangement, the outer wall of the both sides of the box is respectively symmetrical sliding connection with U-shaped lifting plate, four the bottom of the U-shaped lifting plate is fixedly connected with mounting plate, the mounting plate is located in the box, the mounting plate top is fixedly connected with annular shell near the middle, when the lithium battery body if overheat or deflagration occurs, thermal sensor can detect heat anomaly and start servo motor, so that mounting plate and lithium battery body drop to the box as a whole, while two top caps close the top of the box, reach the lithium battery body of deflagration is enclosed in the box, to effectively solve the problem that fire may spread rapidly, not only irreversible damage will be caused to test equipment, also seriously threaten the life safety of staff.

Description

Technical Field

[0001] This invention relates to the field of battery research and development and testing technology, specifically to an electrical performance testing device for electrode materials of ternary lithium-ion batteries. Background Technology

[0002] In the current booming development of the new energy industry, ternary lithium-ion batteries, with their high energy density and good cycle performance, have become the core power source for electric vehicles, energy storage power stations, and other fields. The electrical performance of the electrode materials in ternary lithium-ion batteries directly determines the battery's charge and discharge efficiency, lifespan, and safety. Therefore, accurate electrical performance testing is a key step in promoting battery technology advancement. Among these methods, fast charge and discharge performance testing, as an important means of simulating extreme battery usage scenarios, can effectively evaluate the performance of electrode materials under high current density, but it also presents significant challenges to testing equipment.

[0003] Currently, existing electrical performance testing equipment for ternary lithium-ion battery electrode materials has significant technical shortcomings when performing fast charge and discharge tests. During fast charging and discharging, the electrode material generates a large amount of Joule heat due to the large current passing through it, causing the electrode material temperature to rise continuously and easily leading to overheating. In severe cases, this can even cause deflagration. When a deflagration occurs, existing testing equipment lacks a rapid and effective emergency response mechanism, usually relying on staff to extinguish the fire with handheld fire extinguishers. However, fire extinguishers are often stored in locations far from the testing area, and it takes time for staff to reach the scene after discovering the fire. Lithium battery deflagration is characterized by its rapid speed and intense fire. Within this short time difference, the fire can spread rapidly, causing irreversible damage to the testing equipment, seriously threatening the lives of staff, and potentially triggering a chain reaction of fires on surrounding items, resulting in significant property damage and safety hazards. This greatly limits the safe and efficient conduct of electrical performance testing of ternary lithium-ion battery electrode materials and makes it difficult to meet the needs of actual production and research and development.

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

[0005] To address the issue raised in the background art that, after a lithium battery explodes, the fire can spread rapidly within a short timeframe, causing irreversible damage to testing equipment, seriously threatening the lives of personnel, and potentially triggering a chain reaction of fires on surrounding items, this invention provides an electrical performance testing device for electrode materials of ternary lithium-ion batteries. The device includes a housing and a lithium battery body. The top of the housing is not enclosed. U-shaped lifting plates are symmetrically slidably connected to the outer walls of both sides of the housing. A mounting plate is fixedly connected between the bottom ends of the four U-shaped lifting plates. The mounting plate is located inside the housing. An annular shell is fixedly connected to the top of the mounting plate near the center. The lithium battery body is located inside the annular shell. Support legs are fixedly connected to the bottom of the housing near the four corners.

[0006] The lifting assembly includes a first gear, which is symmetrically and movably connected to one side outer wall of the housing. The lifting assembly is used to drive the mounting plate and the lithium battery body to descend.

[0007] The fixing mechanism includes a positioning pressure plate, which is V-shaped. Positioning pressure plates are symmetrically arranged above the mounting plate. The fixing mechanism is used to fix the lithium battery body when the mounting plate is lowered. The fixing mechanism is used in conjunction with the lifting assembly.

[0008] The protective mechanism includes a cover plate, with cover plates provided on both sides of the housing. The protective mechanism is used to close the top of the housing and is used in conjunction with the lifting assembly.

[0009] Preferably, the lifting assembly further 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 the side opposite to the first gear, the first tooth grooves mesh with the first gear, the outer walls of both sides of the housing are respectively symmetrically fixedly connected with support plates, the support plates are arranged in a triangle, the top of the inner cavity of the four support plates are respectively fixedly connected with fixed plates, and a transmission shaft is installed between two adjacent fixed plates through a bearing, the two ends of the two transmission shafts respectively pass through the inner ring of the bearing and extend to the outer side of the support plate, a first grooved wheel is fixedly connected to one side of the first gear and one end of the transmission shaft, and a first belt is installed between two adjacent first grooved wheels.

[0010] Preferably, the transmission mechanism includes a servo motor, the servo motor is installed on one side of the housing, one end of the transmission shaft and the output end of the servo motor are respectively fixedly connected to a second pulley, and a second belt is installed between the two second pulleys.

[0011] Preferably, the fixing mechanism further includes a vertical plate, with vertical plates movably connected to the two sides of the vertical plate that are far from the center of the positioning pressure plate. The bottom end of the vertical plate is fixedly connected to the top of the mounting plate. A movable opening is provided 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 movable rods. 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 two adjacent movable rods. Limiting tubes are respectively sleeved on the side walls of the two movable rods, and the bottom ends of the limiting tubes are fixedly connected to the top of the mounting plate.

[0012] Preferably, the protective mechanism further includes an L-shaped limiting plate, with the top of each of the four support plates fixedly connected to an L-shaped limiting plate, the cover plate located between two L-shaped limiting plates, the bottom of each of the two cover plates having a second tooth groove, and the sidewalls of the two transmission shafts having a second gear fixedly connected near the middle, the second gear meshing with the second tooth groove.

[0013] Furthermore, a top cover is fixedly connected between the tops of the four U-shaped lifting plates, and a thermal sensor is installed on the top of the top cover. The bottom end of the thermal sensor passes through the top cover and extends to the bottom of the top cover.

[0014] Furthermore, the top of the mounting plate is provided with a first water passage hole that is evenly distributed, and the top of the mounting plate is provided with a second water passage hole that is evenly distributed near the middle, and the second water passage hole is located inside the annular shell.

[0015] Furthermore, symmetrical grooves are provided on the outer walls of both sides of the box, and the inner wall of one side of the U-shaped lifting plate extends into the groove.

[0016] Furthermore, both positioning plates are made of 304 stainless steel.

[0017] Furthermore, both the mounting plate and the annular shell are made of 304 stainless steel.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. In this electrical performance testing equipment for ternary lithium-ion battery electrode materials, through the cooperation of the U-shaped lifting plate, mounting plate, thermal sensor, annular shell and lifting assembly, if the lithium battery body overheats or explodes, the thermal sensor can detect the abnormal heat and start the servo motor, so that the mounting plate and the lithium battery body as a whole descend into the box. At the same time, the two top covers close the top of the box, thereby sealing the exploding lithium battery body inside the box. This effectively solves the problem that the fire may spread rapidly, causing irreversible damage to the testing equipment and seriously threatening the life safety of the staff.

[0020] 2. In this electrical performance testing equipment for ternary lithium-ion battery electrode materials, the cooperation between the positioning plate, movable rod, buoyancy plate, annular shell, and lifting assembly enables the installation plate to descend when a suitable amount of extinguishing agent is pre-injected into the chamber. This allows the buoyancy plate to contact the extinguishing agent and push the movable rod through buoyancy, causing the positioning plate to swing downwards and clamp the lithium battery body. This prevents the lithium battery body from jumping due to deflagration after being immersed in the extinguishing agent, effectively improving safety during use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall rear view structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the overall bottom view of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the housing of the present invention;

[0025] Figure 5 This is a three-dimensional structural diagram of the mounting plate of the present invention;

[0026] Figure 6 This is a bottom view of the mounting plate of the present invention;

[0027] Figure 7 This is a schematic diagram showing the positional distribution of the fixing plate of the present invention;

[0028] Figure 8 This is a three-dimensional structural diagram of the positioning pressure plate of the present invention;

[0029] Figure 9 For the present invention Figure 1 Enlarged view of point A in the image;

[0030] Figure 10 For the present invention Figure 3 Enlarged view of point B in the image.

[0031] The meanings of the labels in the diagram are as follows:

[0032] 1. Housing; 2. U-shaped lifting plate; 3. Mounting plate; 4. Top cover; 5. Annular shell; 6. Lithium battery body; 7. Thermal sensor; 8. Support plate; 9. L-shaped limiting plate; 10. Cover plate; 11. First gear; 12. First tooth groove; 13. First grooved wheel; 14. First belt; 15. Fixing plate; 16. Drive shaft; 17. Second gear; 18. Second tooth groove; 19. Second grooved wheel; 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 passage hole; 30. Second water passage hole; 31. Support leg. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] After a lithium battery explodes, the fire can spread rapidly within a short time interval, causing irreversible damage to the testing equipment, seriously threatening the lives of the staff, and potentially triggering a chain reaction of fires in surrounding items. This invention provides an electrical performance testing device for electrode materials of ternary lithium-ion batteries.

[0035] Therefore, this invention provides an electrical performance testing device for electrode materials used in ternary lithium-ion batteries. (See also...) Figures 1-10 As shown, it includes a housing 1 and a lithium battery body 6. The top of the housing 1 is not closed. U-shaped lifting plates 2 are symmetrically slidably connected to the outer walls of both sides of the housing 1. Mounting plates 3 are fixedly connected between the bottom ends of the four U-shaped lifting plates 2. The mounting plates 3 are located inside the housing 1. An annular shell 5 is fixedly connected to the top of the mounting plate 3 near the middle. The lithium battery body 6 is located inside the annular shell 5. Support legs 31 are fixedly connected to the bottom of the housing 1 near the four corners. The lifting assembly includes a first gear 11. The first gear is symmetrically and movably connected to the outer wall of one side of the housing 1. Wheel 11, the lifting assembly is used to drive the mounting plate 3 and the lithium battery body 6 to descend; the fixing mechanism includes positioning pressure plate 22, which is V-shaped and 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. The fixing mechanism works in conjunction with the lifting assembly; the protective mechanism includes cover plate 10, which is arranged on both sides of the box 1. The protective mechanism is used to close the top of the box 1. The protective mechanism works in conjunction with the lifting assembly.

[0036] See Figures 1-7As shown, the lifting assembly also includes a transmission mechanism and a first toothed groove 12. The two U-shaped lifting plates 2 have evenly distributed first toothed grooves 12 on their opposite sides to the first gear 11. The first toothed grooves 12 mesh with the first gear 11. Support plates 8 are symmetrically fixedly connected to the outer walls of both sides of the housing 1. The support plates 8 are arranged in a triangular shape. Fixed plates 15 are fixedly connected to the top of the inner cavities of the four support plates 8. A transmission shaft 16 is installed between two adjacent fixed plates 15 via bearings. The two ends of the two transmission shafts 16 pass through the inner rings of the bearings and extend to the outer side of the support plates 8. A first grooved wheel 13 is fixedly connected to one side of the first gear 11 and one end of the transmission shaft 16, respectively. A first belt 14 is installed between the two first grooved pulleys 13. The transmission mechanism includes a servo motor 20. A servo motor 20 is installed on one side of the housing 1. A second grooved pulley 19 is fixedly connected to one end of the transmission shaft 16 and the output end of the servo motor 20, respectively. A second belt 21 is installed between the two second grooved pulleys 19. The protective mechanism also includes an L-shaped limiting plate 9. An L-shaped limiting plate 9 is fixedly connected to the top of the four support plates 8, and a cover plate 10 is located between the two L-shaped limiting plates 9. A second tooth groove 18 is opened at the bottom of the two cover plates 10, respectively. A second gear 17 is fixedly connected to the side wall of the two transmission shafts 16 near the middle, and the second gear 17 meshes with the second tooth groove 18.

[0037] During operation, an appropriate amount of extinguishing agent can be injected into the housing 1. In case of an emergency, the lifting assembly can lower the mounting plate 3 and the lithium battery body 6 into the housing 1, so that the lithium battery body 6 is completely immersed in the extinguishing agent. The extinguishing agent, top cover 4 and cover plate 10 can block the spray of the lithium battery body 6, preventing the flame from spreading to the outside of the housing 1. The extinguishing agent can further block the air from contacting the lithium battery body 6, improving the fire extinguishing effect.

[0038] The servo motor 20 in this technical solution is a relatively mature drive device in the prior art and is commonly available on the market. Its usage and working principle are common knowledge among those in the field, so they will not be described in detail in this technical solution. In addition, the method for testing the electrical performance of battery electrode materials is a relatively common technique in the prior art and is common knowledge among those in the field, so it will not be described in detail in this technical solution.

[0039] See Figure 5 and Figure 6As shown, the fixing mechanism also includes a vertical plate 23. The vertical plate 23 is movably connected to the two sides of the positioning pressure plate 22 that are far from the center. 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. A round rod 25 is provided 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 two adjacent movable rods 26. Limiting tubes 27 are respectively sleeved on the side walls of the two movable rods 26. The bottom end of the limiting tubes 27 is fixedly connected to the top of the mounting plate 3.

[0040] During operation, the lithium battery body 6 may shake or jump due to the explosion, and it may float when immersed in the extinguishing agent. Therefore, when the mounting plate 3 descends, the buoyancy generated by the contact between the buoyancy plate 28 and the extinguishing agent pushes the positioning plate 22 downward to contact the top edge of the lithium battery body 6. The buoyancy can continuously push the positioning plate 22 to clamp the lithium battery body 6, while the annular shell 5 can limit the range of motion of the lithium battery body 6, effectively preventing the lithium battery body 6 from jumping during the explosion, thereby effectively improving the safety of use.

[0041] Among them, the top of the four U-shaped lifting plates 2 are fixedly connected to the top of the top cover 4. The top of the top cover 4 is equipped with a thermal sensor 7. The bottom 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 a common existing device, which will not be described in detail here.

[0042] In addition, the top of the mounting plate 3 is provided with a first water passage hole 29 that is evenly distributed, and the top of the mounting plate 3 is provided with a second water passage hole 30 that is evenly distributed near the middle. The second water passage hole 30 is located inside the annular shell 5. Through the first water passage hole 29 and the second water passage hole 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.

[0043] The outer walls of the box 1 are symmetrically provided with sliding grooves on both sides. The inner wall of one side of the U-shaped lifting plate 2 extends into the sliding groove. The sliding groove can restrict the lifting of the U-shaped lifting plate 2, so that the U-shaped lifting plate 2 will not shift to the left or right when it is lifted. It is also more conducive to driving the four U-shaped lifting plates 2 to descend at the same time during transmission, making it more stable in use.

[0044] In addition, both positioning plates 22 are made of 304 stainless steel. During use, the 304 stainless steel positioning plates 22 can withstand the temperature of the lithium battery body 6 explosion, so that the positioning plates 22 will not melt due to high temperature.

[0045] The mounting plate 3 and the annular shell 5 are both made of 304 stainless steel. During use, since the mounting plate 3 and the annular shell 5 are in contact with the lithium battery body 6, they need to be made of high-temperature resistant materials to prevent melting or deformation during use.

[0046] In summary, this invention effectively solves the problem that after a lithium battery explodes, the fire may spread rapidly within a short time difference, causing irreversible damage to the testing equipment, seriously threatening the lives of staff, and potentially triggering a chain reaction of fires on surrounding items. This invention provides an electrical performance testing device for electrode materials of ternary lithium-ion batteries.

[0047] Working Principle: In use, the container 1 is first placed in the desired location, and an appropriate amount of fire extinguishing agent is injected into it, ensuring the surface of the extinguishing agent contacts the bottom of the buoyancy plate 28. Next, the lithium battery body 6 to be tested is placed inside the annular shell 5, and then tested using existing testing equipment. If the lithium battery body 6 experiences a deflagration during the test, the thermal sensor 7 will detect the abnormal temperature and activate the servo motor 20 via the control power supply. The servo motor 20 drives the transmission shaft 16 and the first grooved wheel 13 to rotate counterclockwise via the second belt 21. Simultaneously, the first grooved wheel 13 drives one of the first gears 11 to rotate counterclockwise via the first belt 14. The first gear 11 then drives the U-shaped lifting mechanism via the first tooth groove 12. As plate 2 and top cover 4 descend, the U-shaped lifting plate 2 simultaneously lowers the mounting plate 3, annular shell 5, and lithium battery body 6 into the interior of the housing 1. During the descent of mounting plate 3, the buoyancy of the buoyancy plate 28 causes the reaction force of the movable rod 26 to push the positioning pressure plate 22 downwards, contacting the top of the lithium battery body 6 and clamping it. This prevents the lithium battery body 6 from shaking or jumping within the housing 1 during a deflagration, effectively improving safety. When mounting plate 3 sinks into the housing 1, the extinguishing agent inside the housing 1 reaches the top of mounting plate 3 through the first water passage 29 and the second water passage 30, submerging the lithium battery body 6. Once the lithium battery body 6 is completely immersed in the extinguishing agent, it is cooled and extinguished.

[0048] When the mounting plate 3 descends, the first grooved wheel 13 on both sides of one side rotates, which in turn drives the second gear 17 to rotate, causing the cover plate 10 to slide towards the housing 1. When the mounting plate 3 descends to its limit, the two cover plates 10 close the top of the housing 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.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electrical performance testing device for electrode materials of ternary lithium-ion batteries, comprising a housing (1) and a lithium battery body (6), characterized in that: The top of the box (1) is not closed. U-shaped lifting plates (2) are symmetrically slidably connected to the outer walls of both sides of the box (1). An installation plate (3) is fixedly connected between the bottom ends of the four U-shaped lifting plates (2). The installation plate (3) is located inside the box (1). An annular shell (5) is fixedly connected to the top of the installation plate (3) near the middle. The lithium battery body (6) is located inside the annular shell (5). Support legs (31) are fixedly connected to the bottom of the box (1) near the four corners. The lifting assembly includes a first gear (11), and the first gear (11) is symmetrically and movably connected to one side of the outer wall of the housing (1). The lifting assembly is used to drive the mounting plate (3) and the lithium battery body (6) to descend. The fixing mechanism includes a positioning plate (22), which is V-shaped. The positioning plate (22) is symmetrically arranged above the mounting plate (3). The fixing mechanism is used to fix the lithium battery body (6) when the mounting plate (3) is lowered. The fixing mechanism is used in conjunction with the lifting assembly. The protective mechanism includes a cover plate (10), and the cover plates (10) are respectively provided on both sides of the box (1). The protective mechanism is used to close the top of the box (1). The protective mechanism is used in conjunction with the lifting assembly. The lifting assembly also includes a transmission mechanism and a first tooth groove (12). The two U-shaped lifting plates (2) are respectively provided with evenly distributed first tooth grooves (12) on the side opposite to the first gear (11). The first tooth grooves (12) mesh with the first gear (11). Support plates (8) are symmetrically fixedly connected to the outer walls of both sides of the housing (1). The support plates (8) are arranged in a triangle. Fixed plates (15) are fixedly connected to the top of the inner cavity of the four support plates (8). A transmission shaft (16) is installed between two adjacent fixed plates (15) through a bearing. The two ends of the two transmission shafts (16) pass through the inner ring of the bearing and extend to the outside of the support plate (8). A first grooved wheel (13) is fixedly connected to one side of the first gear (11) and one end of the transmission shaft (16). A first belt (14) is installed between two adjacent first grooved wheels (13). The transmission mechanism includes a servo motor (20), a servo motor (20) is installed on one side of the housing (1), a second groove wheel (19) is fixedly connected to one end of the transmission shaft (16) and the output end of the servo motor (20), and a second belt (21) is installed between the two second groove wheels (19). The fixing mechanism also includes a vertical plate (23). The vertical plate (23) is movably connected to the two sides of the positioning pressure plate (22) that are far from the center. The bottom end of the vertical plate (23) is fixedly connected to the top of the mounting plate (3). The positioning pressure plate (22) has a movable opening (24) on one side. A round rod (25) is provided 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 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 sleeved on the side wall of the two movable rods (26). The bottom end of the limiting tube (27) is fixedly connected to the top of the mounting plate (3). When the mounting plate (3) descends, it generates buoyancy by contacting the extinguishing agent through the buoyancy plate (28). The reaction force pushes the positioning plate (22) to swing downward and contact the top edge of the lithium battery body (6). The buoyancy can continuously push the positioning plate (22) to clamp the lithium battery body (6).

2. The electrical performance testing equipment for ternary lithium-ion battery electrode materials according to claim 1, characterized in that: The protective mechanism also includes an L-shaped limiting plate (9), and the top of the four support plates (8) are respectively fixedly connected with the L-shaped limiting plate (9). The cover plate (10) is located between the two L-shaped limiting plates (9). The bottom of the two cover plates (10) is respectively provided with a second tooth groove (18). The two transmission shafts (16) are respectively fixedly connected with a second gear (17) near the middle on the side wall. The second gear (17) meshes with the second tooth groove (18).

3. 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). The bottom end of the thermal sensor (7) passes through the top cover (4) and extends to the bottom of the top cover (4).

4. The electrical performance testing equipment for ternary lithium-ion battery electrode materials according to claim 1, characterized in that: The mounting plate (3) has a first water passage hole (29) evenly distributed on its top, and a second water passage hole (30) evenly distributed near the middle of the top of the mounting plate (3). The second water passage hole (30) is located inside the annular shell (5).

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

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

7. 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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