Performance detection equipment for lithium battery energy storage equipment

Abstract

The invention discloses performance detection equipment of lithium battery energy storage equipment, and belongs to the technical field of lithium battery detection, the performance detection equipment comprises a detection platform and a simulation battery pack frame used for assembling a lithium battery piece to be detected, the top end of the detection platform is fixedly connected with two electric control guide rails, and the electric control guide rails are connected with butt joint seats through sliding seats; guide grooves are formed in the two sides of the butt joint base respectively. Through the arrangement of the pressurizing bag ring and the detection ring, the fit liquid cooling state of the lithium battery piece when the lithium battery piece is used in an electric automobile can be simulated by utilizing the detection ring during auxiliary limiting, so that the charging state of the lithium battery piece can be conveniently tested in a high-temperature environment subsequently, and the detection is more in line with the actual use condition of the lithium battery piece; the lithium battery piece on the simulation battery pack frame can be subjected to acceleration simulation by using the superposed magnetic field of the plurality of electromagnetic plates, the external complex electromagnetic interference state is synchronously simulated, and whether electromagnetic interference is generated on the electronic equipment or not in the superposed electromagnetic interference state is judged.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery detection, and particularly to a performance detection device for a lithium battery energy storage device. Background Art

[0002] Lithium batteries are mainly used to provide power sources in electric vehicles. Lithium-ion batteries dominate the market due to their advantages such as high energy density, long lifespan, and safety and reliability.

[0003] When an electric vehicle charges a lithium battery, there are certain restrictions on the current and voltage at different charging stages. It will perform pre-charging when the lithium battery is fully discharged, and perform trickle charging with a small current. When the battery voltage rises above the trickle charging threshold, constant current charging starts. When the battery voltage rises to the constant current charging threshold, the constant current charging ends and constant voltage charging starts. However, if the internal resistance of the lithium battery is too large or the external environmental temperature is too high during the charging process, it will cause the current or voltage of the lithium battery to be abnormal at different charging stages, and then the charging state of the lithium battery will be abnormal at different charging stages, resulting in the lithium battery not being able to work properly and posing a safety hazard. Moreover, the battery of an electric vehicle is mainly composed of multiple small lithium batteries connected in series and parallel. During the process of rapid acceleration and continuous high-speed driving of the vehicle, the overall electromagnetic radiation will increase compared to the normal state. To ensure the electromagnetic compatibility of the lithium battery during use, it is necessary to measure the electromagnetic interference of the overall lithium battery under different complex conditions to ensure the safety of in-vehicle electronic equipment. Therefore, a performance detection device for a lithium battery energy storage device is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art that if the internal resistance of the lithium battery is too large or the external environmental temperature is too high during the charging process, it will cause the current or voltage of the lithium battery to be abnormal at different charging stages, and then the charging state of the lithium battery will be abnormal at different charging stages, resulting in the lithium battery not being able to work properly and posing a safety hazard, and to propose a performance detection device for a lithium battery energy storage device.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A performance detection device for a lithium battery energy storage device, comprising a detection platform and a simulated battery pack frame for assembling lithium battery components to be detected. Two electric control guide rails are fixedly connected to the top end of the detection platform. The electric control guide rails are connected with a docking seat through a sliding seat. Guide grooves are respectively arranged on both sides of the docking seat. The guide grooves are connected with two hydraulic lifting rods through steel sliding seats. The top end of the hydraulic lifting rod is connected with a turning motor. The output end of the turning motor is fixedly connected with the side wall of the simulated battery pack frame through a rotating shaft. A plurality of storage grooves for placing lithium battery components are formed on the simulated battery pack frame. Multiple rows of negative electrode covers are arranged on both the upper and lower end faces of the simulated battery pack frame, and the multiple rows of negative electrode covers on the upper and lower end faces are arranged staggeredly;

[0007] The outer side wall of the negative electrode cover is connected with a positive electrode cover through a hinge. A plurality of hinges in the same row are jointly connected through a pin shaft. One end of the pin shaft is connected with an adjustment component for controlling the rotation of the positive electrode cover. A plurality of annular grooves are formed on the inner side wall of the storage groove of the simulated battery pack frame. The inner side wall of the annular groove is connected with a detection ring. A pressurized air bag ring is arranged outside one end of the plurality of detection rings. Two magnetic simulation components for controlling the acceleration of the simulated battery pack frame are connected to the top end of the detection platform.

[0008] Preferably, the inner side wall of the electric control guide rail is slidably connected with the side wall of the sliding seat. The top end of the sliding seat is fixedly connected with the bottom end of the docking seat. A plurality of installation grooves for placing lithium battery components are formed on the top end of the docking seat.

[0009] Preferably, the top end of the detection platform is fixedly connected with the bottom end of the guide groove. The inner side wall of the guide groove is slidably connected with the steel sliding seat. The top end of the steel sliding seat is fixedly connected with two hydraulic lifting rods through a fixing seat.

[0010] Preferably, the top end of the hydraulic lifting rod is fixedly connected with the turning motor through a mounting plate. The top end of the mounting plate is rotatably connected with an induction electronic device through an electric control steering rod.

[0011] Preferably, the adjustment component is composed of an adjustment rack and an adjustment gear. The adjustment rack is meshed with the adjustment gear. Electric push rods are fixedly connected to both the top end and the bottom end of the simulated battery pack frame. The output end of the electric push rod is fixedly connected with the end of the adjustment rack.

[0012] Preferably, adjacent two adjustment racks are fixedly connected through a fixing rod. The adjustment rack is slidably connected with the simulated battery pack frame through a limit sliding groove. The adjustment gear is fixedly connected with the end of the pin shaft.

[0013] Preferably, the negative electrode cover is rotatably connected with the positive electrode cover through a hinge. A pressing spring is fixedly connected to the inner end face of the negative electrode cover. A test power supply is fixedly connected to the side wall of the simulated battery pack frame.

[0014] Preferably, a plurality of the detection rings are interconnected through a plurality of conduits. The detection rings are interconnected with the pressurizing bladder ring through the conduits. Cooling liquid is provided between the detection rings and the pressurizing bladder ring. A hydraulic sensor is arranged inside the detection rings. The outer sidewall of the pressurizing bladder ring is fixedly connected to the inner end face of the negative electrode cover. An electric heating rod is arranged between four adjacent storage grooves of the simulated battery pack frame.

[0015] Preferably, the magnetic simulation assembly is composed of a plurality of electromagnetic plates arranged on both sides of the guiding groove. The plurality of electromagnetic plates are symmetrically arranged. The top end of the detection platform is fixedly connected to the electromagnetic plates. A buffer pad is fixedly connected to the end of the guiding groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. Through the settings of the docking seat and the simulated battery pack frame in this solution, the lithium battery components to be tested can be quickly loaded into the two end faces of the simulated battery pack frame that can be turned over back and forth by using the docking seat, which is convenient for the subsequent battery pack wiring method of first connecting in series and then in parallel for multiple lithium battery components, making the detection of multiple lithium battery components more efficient and convenient, and greatly improving the overall detection efficiency of the lithium battery components.

[0018] 2. Through the settings of the pressurizing bladder ring and the detection rings in this solution, when the detection rings are used for auxiliary limiting, the liquid cooling state when the lithium battery components are used in an electric vehicle can be simulated, which is convenient for testing their charging state under high-temperature environments subsequently, making the detection more in line with the actual use situation of the lithium battery components, and also making the detection of a single defective product more accurate and efficient when multiple lithium battery components are detected.

[0019] 3. Through the settings of a plurality of electromagnetic plates in this solution, the superimposed magnetic field of the plurality of electromagnetic plates can be used to accelerate the simulation of the lithium battery components on the simulated battery pack frame, and the complex external electromagnetic interference state can be simulated synchronously, so as to judge whether electromagnetic interference will be generated on electronic devices under the superimposed electromagnetic interference state, and avoid large electromagnetic interference generated when some lithium battery components are unqualified during use. Description of the Drawings

[0020] Figure 1 is a three-dimensional structural schematic diagram of a performance detection device for a lithium battery energy storage device proposed by the present invention;

[0021] Figure 2 is an assembly drawing of a performance detection device for a lithium battery energy storage device proposed by the present invention;

[0022] Figure 3 is Figure 2 the enlarged view at A in

[0023] Figure 4 is a structural schematic diagram of the position of the sliding seat in a performance detection device for a lithium battery energy storage device proposed by the present invention;

[0024] Figure 5 Schematic diagram of the structure of the magnetic simulation component in a performance detection device for a lithium battery energy storage device proposed by the present invention;

[0025] Figure 6 Schematic diagram of the structure below the simulated battery pack frame in a performance detection device for a lithium battery energy storage device proposed by the present invention;

[0026] Figure 7 Schematic diagram of the structure of the adjustment component in a performance detection device for a lithium battery energy storage device proposed by the present invention;

[0027] Figure 8 Cross-sectional view of the simulated battery pack frame in a performance detection device for a lithium battery energy storage device proposed by the present invention;

[0028] Figure 9 Schematic diagram of the structure of the connection between the pressure-boosting bladder ring and the detection ring in a performance detection device for a lithium battery energy storage device proposed by the present invention.

[0029] In the figure: 1, detection platform; 2, simulated battery pack frame; 3, lithium battery component; 4, electric control guide rail; 5, sliding seat; 6, docking seat; 7, guide groove; 8, steel sliding seat; 9, hydraulic lifting rod; 10, flipping motor; 11, electric control steering rod; 12, induction electronic device; 13, electric push rod; 14, limit sliding groove; 15, adjusting rack; 16, adjusting gear; 17, negative electrode cover; 18, compression spring; 19, hinge; 20, positive electrode cover; 21, test power supply; 22, pressure-boosting bladder ring; 23, conduit; 24, detection ring; 25, electric heating rod; 26, electromagnetic plate; 27, buffer pad. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] Example, refer to Figures 1 to 9 , a performance detection device for a lithium battery energy storage device, comprising a detection platform 1 and a simulated battery pack frame 2 for assembling the lithium battery parts 3 to be detected. Two electric control guide rails 4 are fixedly connected to the top end of the detection platform 1. The electric control guide rails 4 are connected with a docking seat 6 through a sliding seat 5. Guide grooves 7 are respectively arranged on both sides of the docking seat 6. The guide grooves 7 are connected with two hydraulic lifting rods 9 through steel sliding seats 8. The top ends of the hydraulic lifting rods 9 are connected with a turning motor 10. The output end of the turning motor 10 is fixedly connected to the side wall of the simulated battery pack frame 2 through a rotating shaft. A plurality of storage grooves for placing the lithium battery parts 3 are formed on the simulated battery pack frame 2. A plurality of rows of negative electrode covers 17 are arranged on both the upper and lower end faces of the simulated battery pack frame 2, and the multiple rows of negative electrode covers 17 on the upper and lower end faces are arranged in a staggered manner.

[0034] Furthermore, the inner side wall of the electric control guide rail 4 is slidably connected to the side wall of the sliding seat 5. The top end of the sliding seat 5 is fixedly connected to the bottom end of the docking seat 6. A plurality of installation grooves for placing the lithium battery parts 3 are formed at the top end of the docking seat 6. The top end of the detection platform 1 is fixedly connected to the bottom end of the guide groove 7. The inner side wall of the guide groove 7 is slidably connected to the steel sliding seat 8. The top end of the steel sliding seat 8 is fixedly connected to the two hydraulic lifting rods 9 through a fixing seat. The top ends of the hydraulic lifting rods 9 are fixedly connected to the turning motor 10 through a mounting plate. The top end of the mounting plate is rotatably connected to an induction electronic device 12 through an electric control steering rod 11.

[0035] It should be noted that: the staff place the lithium battery components 3 to be detected in the installation grooves of the docking seat 6 in the state with the positive electrode facing down in sequence, and then control the start of the electric control guide rail 4. The docking seat 6 is driven by the sliding seat 5 to move to the set position directly below the simulated battery pack frame 2, so as to drive multiple lithium battery components 3 to be detected to move directly below the simulated battery pack frame 2. Then, the simulated battery pack frame 2 is controlled to move downward by the hydraulic lifting rod 9, so that the receiving groove on the simulated battery pack frame 2 is docked with the lithium battery component 3, and the negative electrode end of the lithium battery component 3 is close to the negative electrode cover 17 (the detection ring 24 is a structure of an expandable bladder. After the lithium battery component 3 enters the receiving groove, it remains in a non-dropping state under the friction force of the detection ring 24). Then, the simulated battery pack frame 2 is driven to move upward by the hydraulic lifting rod 9, and the flipping motor 10 is started to control the simulated battery pack frame 2 to rotate 180° for flipping. At the same time, the sliding seat 5 slides on the electric control guide rail 4 to drive the docking seat 6 to move outward. Then, the staff continue to place the subsequent lithium battery components 3 to be detected in the installation grooves of the docking seat 6, and then repeat the above operations to load the lithium battery components 3 to be detected into the receiving grooves of the flipped simulated battery pack frame 2.

[0036] The benefits based on the above are as follows: in this way, the docking seat 6 can be used to quickly load the lithium battery components 3 to be detected into the two end faces of the simulated battery pack frame 2 that are flipped back and forth, which is convenient for the subsequent battery pack wiring method of first connecting in series and then in parallel for multiple lithium battery components 3, making the detection of multiple lithium battery components 3 more efficient and convenient, and greatly improving the overall detection efficiency of the lithium battery components 3.

[0037] The outer side wall of the negative electrode cover 17 is connected with a positive electrode cover 20 through a hinge 19. A plurality of hinges 19 in the same row are jointly connected by a pin shaft. One end of the pin shaft is connected with an adjustment component for controlling the rotation of the positive electrode cover 20. A plurality of annular grooves are formed on the inner side wall of the receiving groove of the simulated battery pack frame 2. The inner side wall of the annular groove is connected with a detection ring 24, and a pressurizing bladder ring 22 is arranged outside one end of the plurality of detection rings 24.

[0038] Further, the adjustment component consists of an adjustment rack 15 and an adjustment gear 16. The adjustment rack 15 meshes with the adjustment gear 16. Electric push rods 13 are fixedly connected to both the top and bottom ends of the simulated battery pack frame 2. The output end of the electric push rod 13 is fixedly connected to the end of the adjustment rack 15. Adjacent adjustment racks 15 are fixedly connected by a fixing rod. The adjustment rack 15 is slidably connected to the simulated battery pack frame 2 through a limit chute 14. The adjustment gear 16 is fixedly connected to the end of a pin shaft. The negative electrode cover 17 is rotatably connected to the positive electrode cover 20 through a hinge 19. A compression spring 18 is fixedly connected to the inner end face of the negative electrode cover 17. A test power supply 21 is fixedly connected to the side wall of the simulated battery pack frame 2. A plurality of detection rings 24 are interconnected through a plurality of conduits 23. The detection ring 24 is interconnected with the pressurizing bladder ring 22 through the conduit 23. Cooling liquid is filled between the detection ring 24 and the pressurizing bladder ring 22. A hydraulic sensor is arranged inside the detection ring 24. The outer side wall of the pressurizing bladder ring 22 is fixedly connected to the inner end face of the negative electrode cover 17. An electric heating rod 25 is arranged between four adjacent storage grooves of the simulated battery pack frame 2.

[0039] It should be noted that: after the lithium battery components 3 enter the storage grooves, the electric push rods 13 on this end face of the simulated battery pack frame 2 are controlled to start, thereby pulling the plurality of adjustment racks 15, so that the adjustment racks 15 are limited and slide in the limit chute 14. The movement of the adjustment rack 15 will drive the meshing adjustment gear 16 to rotate. Then, the adjustment gear 16 controls the rotation of a plurality of hinges 19 through the pin shaft, thereby driving a plurality of positive electrode covers 20 to rotate on the negative electrode cover 17. The lithium battery components 3 are pressed in the storage grooves through the positive electrode covers 20. During the pressing process, the lithium battery components 3 will compress the compression spring 18 inside the negative electrode cover 17, and thus will squeeze the pressurizing bladder ring 22. After the pressurizing bladder ring 22 is pressed, the cooling liquid inside it will enter the plurality of detection rings 24 through the conduit 23, causing the plurality of detection rings 24 to be pressed and expanded, performing a pressing and limiting on the lithium battery components 3, facilitating to ensure the stability of the lithium battery components 3 during the subsequent moving detection process, and at the same time simulating the liquid cooling state when the lithium battery components 3 are used in an electric vehicle.

[0040] Subsequently, the test power supply 21 is used to simulate the charging state of the plurality of lithium battery components 3 inside the simulated battery pack frame 2, and the electric heating rod 25 is energized to gradually heat up, quickly simulating the high-temperature environment encountered by the lithium battery components 3 during charging. If, in the presence of a liquid cooling state during fitting, the lithium battery components 3 expand abnormally during charging, it will cause the detection rings 24 to be pressed, and the hydraulic sensor inside the detection rings 24 will sense this change situation, indicating that the lithium battery components 3 at this location will have abnormalities during the charging state and are defective products, facilitating to quickly and accurately locate the unqualified products among the plurality of lithium battery components 3.

[0041] The benefits based on the above are as follows: When the detection loop 24 is used for auxiliary limit, the liquid cooling state when the lithium battery component 3 is used in an electric vehicle can be simulated, which is convenient for testing its charging state in a high-temperature environment subsequently, making the detection more in line with the actual use situation of the lithium battery component 3, and also making the detection of a single defective product more accurate and efficient when multiple lithium battery components 3 are detected.

[0042] Two magnetic simulation components for controlling the acceleration of the simulated battery pack frame 2 are connected to the top of the detection platform 1.

[0043] Furthermore, the magnetic simulation component is composed of multiple electromagnetic plates 26 arranged on both sides of the guiding groove 7. The multiple electromagnetic plates 26 are symmetrically arranged. The top of the detection platform 1 is fixedly connected to the electromagnetic plates 26, and a buffer pad 27 is fixedly connected to the end of the guiding groove 7.

[0044] It should be noted that when simulating the acceleration state of the lithium battery component 3, the electromagnetic plates 26 outside both sides of the guiding groove 7 are independently energized synchronously, and the magnitude of the current passed through different electromagnetic plates 26 is controlled, so that the magnetic force of the electromagnetic plates 26 in the direction towards the buffer pad 27 continuously increases. The electromagnetic plates 26 generate a certain magnetic field around themselves, and these magnetic fields interact with each other in space, and finally form a total magnetic field. The magnetic field at the center position of the guiding groove 7 of this total magnetic field follows the principle of vector addition, and will form a magnetic field that is superimposed along the center of the guiding groove 7 towards the buffer pad 27. Affected by the superimposed magnetic field, the steel sliding seat 8 will be instantaneously accelerated and move towards the buffer pad 27, thereby simulating the instantaneous acceleration state of the lithium battery component 3 during use. During this process, the current release of the lithium battery component 3 is increased, and the multiple external electromagnetic plates 26 are used to simulate the external electromagnetic interference caused by the electric vehicle passing through different regions. During this process, the electric control steering rod 11 will control the induction electronic device 12 to rotate to judge the superimposed electromagnetic interference situation received by the electronic device on the lithium battery component 3 in a complex external electromagnetic environment.

[0045] The benefits based on the above are as follows: In this way, the superimposed magnetic field of multiple electromagnetic plates 26 can be used to accelerate and simulate the lithium battery component 3 on the simulated battery pack frame 2, and simultaneously simulate the complex external electromagnetic interference state, and judge whether electromagnetic interference will be generated on the electronic device under the superimposed electromagnetic interference state, so as to avoid large electromagnetic interference generated when some lithium battery components 3 are unqualified during use.

[0046] When the present invention is in use, the staff place the lithium battery components 3 to be detected in the installation grooves of the docking seat 6 in the state of the positive electrode facing down in sequence. Subsequently, the electric control guide rail 4 is controlled to start, and the docking seat 6 is driven by the sliding seat 5 to move to a set position directly below the simulated battery pack frame 2, thereby driving a plurality of lithium battery components 3 to be detected to move directly below the simulated battery pack frame 2. Subsequently, the simulated battery pack frame 2 is controlled to move downward by the hydraulic lifting rod 9, so that the receiving groove on the simulated battery pack frame 2 is docked with the lithium battery component 3, and the negative electrode end of the lithium battery component 3 is close to the negative electrode cover 17 (the detection ring 24 is an expandable bladder structure. After the lithium battery component 3 enters the receiving groove, under the friction force of the detection ring 24, it remains in a non-dropping state). Subsequently, the simulated battery pack frame 2 is driven to move upward by the hydraulic lifting rod 9, and the flipping motor 10 is started to control the simulated battery pack frame 2 to rotate 180° for flipping. At the same time, the sliding seat 5 slides on the electric control guide rail 4 to drive the docking seat 6 to move outward. Then, the staff continue to place the subsequent lithium battery components 3 to be detected in the installation grooves of the docking seat 6, and then repeat the above operations to load the lithium battery components 3 to be tested into the receiving grooves of the flipped simulated battery pack frame 2. In this way, the docking seat 6 can be used to quickly load the lithium battery components 3 to be tested into the two end faces of the simulated battery pack frame 2 that are flipped back and forth, which is convenient for the subsequent battery pack wiring method of first connecting in series and then in parallel for a plurality of lithium battery components 3, making the detection of a plurality of lithium battery components 3 more efficient and convenient, and greatly improving the overall detection efficiency of the lithium battery components 3.

[0047] After the lithium battery component 3 enters the receiving groove, the electric push rod 13 on this end face of the simulated battery pack frame 2 is controlled to start, thereby pulling a plurality of adjusting racks 15, so that the adjusting racks 15 slide in a limited way in the limit sliding grooves 14. The movement of the adjusting racks 15 will drive the meshing adjusting gears 16 to rotate, and the adjusting gears 16 control a plurality of hinges 19 to rotate through the pin shafts, thereby driving a plurality of positive electrode covers 20 to rotate on the negative electrode cover 17, and pressing the lithium battery component 3 in the receiving groove through the positive electrode covers 20. During the pressing process, the lithium battery component 3 will compress the pressing spring 18 in the negative electrode cover 17, and thus will squeeze the pressurizing bladder ring 22. After the pressurizing bladder ring 22 is pressed, the coolant liquid inside it will enter into a plurality of detection rings 24 through the conduit 23, so that the plurality of detection rings 24 are pressed and expanded, and perform a pressing type limit on the lithium battery component 3, which is convenient for ensuring the stability of the lithium battery component 3 during the subsequent moving detection process, and at the same time simulates the liquid cooling state when the lithium battery component 3 is used in an electric vehicle.

[0048] Subsequently, a test power supply 21 is used to simulate the charging state of multiple lithium battery components 3 in the simulated battery pack frame 2, and an electric heating rod 25 is energized to gradually heat up, quickly simulating the high-temperature environment encountered by the lithium battery components 3 during charging. If, in the case of a bonded liquid-cooled state, the lithium battery components 3 exhibit abnormal swelling during charging, it will cause the detection ring 24 to be compressed, enabling the hydraulic sensor within the detection ring 24 to sense this change. This indicates that the lithium battery components 3 at this location will exhibit abnormalities during the charging state and are defective products. This facilitates quickly and accurately locating the unqualified products among the multiple lithium battery components 3. In this way, when the detection ring 24 is used for auxiliary positioning, it can simulate the bonded liquid-cooled state when the lithium battery components 3 are used in an electric vehicle, facilitating subsequent testing of their charging state in a high-temperature environment, making the detection more in line with the actual usage situation of the lithium battery components 3, and also making the detection of a single defective product among multiple lithium battery components 3 more accurate and efficient.

[0049] When accelerating the simulation state of the lithium battery components 3, the electromagnetic plates 26 outside both sides of the guide groove 7 are independently energized synchronously, and the magnitude of the current passed through different electromagnetic plates 26 is controlled, such that the magnetic force of the electromagnetic plates 26 in the direction towards the buffer pad 27 continuously increases. The electromagnetic plates 26 generate a certain magnetic field around themselves, and these magnetic fields interact with each other in space, ultimately forming a total magnetic field. The magnetic field at the central position of the guide groove 7 of this total magnetic field follows the principle of vector addition and will form a superimposed magnetic field along the center of the guide groove 7 towards the buffer pad 27. Affected by the superimposed magnetic field, the steel sliding seat 8 will instantaneously accelerate and move in the direction towards the buffer pad 27, thereby simulating the instantaneous acceleration state of the lithium battery components 3 during use. During this process, the current release of the lithium battery components 3 is increased. The multiple external electromagnetic plates 26 are used to simulate the external electromagnetic interference caused by an electric vehicle passing through different regions. During this process, the electric control steering rod 11 will control the induction electronic device 12 to rotate to determine how the electronic device on the lithium battery components 3 is affected by the superimposed electromagnetic interference in a complex external electromagnetic environment. In this way, the superimposed magnetic field of the multiple electromagnetic plates 26 can be used to accelerate the simulation of the lithium battery components 3 on the simulated battery pack frame 2 and simultaneously simulate the complex external electromagnetic interference state, and determine whether electromagnetic interference will be generated on the electronic device under the superimposed electromagnetic interference state, avoiding relatively large electromagnetic interference generated by some unqualified lithium battery components 3 during use.

[0050] As described above, only the preferred specific embodiments of the present invention are provided, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A performance testing device for a lithium battery energy storage device, comprising a testing platform (1) and a simulated battery pack frame (2) for assembling a lithium battery unit (3) to be tested, characterized in that: The top of the detection platform (1) is fixedly connected to two electric control rails (4), the electric control rails (4) are connected to a docking seat (6) via a sliding seat (5), guide grooves (7) are respectively arranged on both sides of the docking seat (6), the guide grooves (7) are connected to two hydraulic lifting rods (9) via a steel sliding seat (8), the top of the hydraulic lifting rod (9) is connected to a flip motor (10), the output end of the flip motor (10) is fixedly connected to the side wall of the simulated battery pack frame (2) via a rotating shaft, the simulated battery pack frame (2) is provided with a plurality of storage slots for placing lithium battery components (3), the upper and lower end surfaces of the simulated battery pack frame (2) are both provided with a plurality of rows of negative electrode covers (17), and the plurality of rows of negative electrode covers (17) on the upper and lower end surfaces are arranged in a staggered manner; The outer wall of the negative electrode cover (17) is connected to the positive electrode cover (20) via a hinge (19); a plurality of hinges (19) in the same row are connected together via a pin shaft; one end of the pin shaft is connected to an adjustment component for controlling the rotation of the positive electrode cover (20); a plurality of annular grooves are provided on the inner wall of the storage slot of the simulated battery pack frame (2); the inner wall of the annular groove is connected to a detection ring (24); a booster bag ring (22) is provided at one end of the plurality of detection rings (24); and two magnetic simulation components for controlling the acceleration of the simulated battery pack frame (2) are connected to the top of the detection platform (1).

2. The performance testing device for a lithium battery energy storage device according to claim 1, characterized in that: The inner side wall of the electric control guide rail (4) is slidably connected to the side wall of the sliding seat (5), the top end of the sliding seat (5) is fixedly connected to the bottom end of the docking seat (6), and the top end of the docking seat (6) is provided with a plurality of installation grooves for placing lithium battery components (3).

3. The performance testing device for a lithium battery energy storage device according to claim 1, characterized in that: The top of the detection platform (1) is fixedly connected to the bottom of the guide groove (7), the inner wall of the guide groove (7) is slidably connected to the steel slide seat (8), and the top of the steel slide seat (8) is fixedly connected to two hydraulic lifting rods (9) via a fixed seat.

4. The performance testing device for a lithium battery energy storage device according to claim 1, characterized in that: The top end of the hydraulic lifting rod (9) is fixedly connected to the tilting motor (10) via a mounting plate, and the top end of the mounting plate is rotationally connected to an inductive electronic device (12) via an electric-controlled steering rod (11).

5. The performance testing device for a lithium battery energy storage device according to claim 1, characterized in that: The adjustment assembly is composed of an adjustment rack (15) and an adjustment gear (16), the adjustment rack (15) meshing with the adjustment gear (16), the top and bottom ends of the simulated battery pack frame (2) are fixedly connected to an electric push rod (13), and the output end of the electric push rod (13) is fixedly connected to the end of the adjustment rack (15).

6. The performance testing device for a lithium battery energy storage device according to claim 5, characterized in that: Two adjacent adjustment racks (15) are fixedly connected via a fixing rod, the adjustment rack (15) is slidably connected to the simulated battery pack frame (2) via a limiting sliding groove (14), and the adjustment gear (16) is fixedly connected to the end of the pin shaft.

7. The performance testing device for a lithium battery energy storage device according to claim 1, characterized in that: The negative electrode cover (17) is rotatably connected to the positive electrode cover (20) via a hinge (19); a compression spring (18) is fixedly connected to the inner end surface of the negative electrode cover (17); and a test power source (21) is fixedly connected to the side wall of the simulated battery pack frame (2).

8. The performance testing device for a lithium battery energy storage device according to claim 1, characterized in that: The plurality of detection rings (24) are interconnected through a plurality of conduits (23); the detection rings (24) are interconnected with the booster bladder ring (22) through the conduit (23); cooling liquid is provided between the detection rings (24) and the booster bladder ring (22); a hydraulic sensor is provided inside the detection ring (24); the outer wall of the booster bladder ring (22) is fixedly connected to the inner end surface of the negative electrode cover (17); and an electric heating rod (25) is provided between four adjacent storage slots of the simulated battery pack frame (2).

9. The performance testing device for a lithium battery energy storage device according to claim 1, characterized in that: The magnetic simulation component is composed of a plurality of electromagnetic plates (26) arranged on both sides of the guide groove (7), the plurality of electromagnetic plates (26) are symmetrically arranged, the top end of the detection platform (1) is fixedly connected to the electromagnetic plates (26), and the end of the guide groove (7) is fixedly connected to a buffer pad (27).

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