A solid-state battery electrical performance testing device for real-time monitoring

Abstract

This invention discloses a real-time monitoring device for solid-state battery electrical performance testing, relating to the field of battery electrical performance testing devices. It includes a workbench with a top frame on top. Positioning chambers on both sides of the mounting platform are positioned and covered by electric push rods. A top plate is driven by an electric push rod at the bottom of the top frame. The bottom of the top plate is fixedly connected to a pressure plate via a connector. Dynamic simulation components are arranged between the top plate and the pressure plate, and below the mounting platform. Heat-conducting pipes are laid inside the positioning chambers, and heat storage and recovery components are arranged on the left and right sides of the workbench. This real-time monitoring device for solid-state battery electrical performance testing, through the coordinated operation of pressure monitoring and electrical performance testing modules, dynamic environment simulation modules, and safety protection and heat recovery modules, enables real-time monitoring of the electrical performance of solid-state batteries under static, dynamic pressure, and different temperature environments. It also features overload protection and energy reuse functions.

Description

Technical Field

[0001] This invention relates to the field of battery electrical performance testing devices, specifically a real-time monitoring device for solid-state battery electrical performance testing. Background Technology

[0002] Against the backdrop of the rapid development of the new energy industry, solid-state batteries have become the core development direction of next-generation power batteries due to their advantages such as high energy density, excellent safety, and long cycle life. The interfacial contact state between the electrodes and solid electrolyte of a solid-state battery directly determines its ion conduction efficiency and electrical performance. Pressure is a key factor affecting interfacial contact. Appropriate pressure can reduce interfacial impedance and increase ion migration rate; insufficient pressure leads to poor interfacial contact and performance degradation; excessive pressure may damage the electrode or electrolyte structure and cause safety hazards. Therefore, in the research and development and production of solid-state batteries, it is necessary to explore the correlation between pressure and electrical performance through precise pressure control and simultaneous electrical performance testing, so as to provide a basis for battery structure optimization and process improvement. Existing solid-state battery electrical performance testing equipment is complex in structure, cumbersome to operate, and has low testing efficiency.

[0003] To address the aforementioned shortcomings, the existing technology (Chinese patent No. CN217787317U, published on 2022-11-11) electrical performance testing device is equipped with a pressure adjustment component, which can adjust the pressure of the test fixture on the test sample, thereby quickly and efficiently obtaining the electrical performance parameters of the test sample under different pressures, realizing the electrical performance testing of the test sample under different pressure conditions, with high testing efficiency and simple and convenient operation.

[0004] The existing technology (Chinese patent CN218181061U, published on 2022-12-30) battery electrical performance testing device uses a first clamping plate assembly to form a clamping area, and a pressure sensor is installed in a second clamping plate assembly. The battery to be tested is placed in the clamping area. In this way, the first clamping plate assembly can apply stress to the battery. When the battery expands under stress, the size of the clamping area increases. The change of the first clamping plate assembly is transmitted to the second clamping plate assembly, causing the second clamping plate assembly to change as well. The size of the detection area changes, and the pressure sensor in the detection area senses and detects the pressure value of the moving part of the second clamping plate assembly, thereby reflecting the change in battery tension. At the same time, during the increase of the clamping area, the moving part of the first clamping plate assembly triggers a displacement sensor. The displacement sensor detects the movement distance of this part to reflect the change in battery thickness. Concurrently with the above process, due to the cavity structure of the first clamping plate assembly, a temperature-regulating medium can be circulated into the cavity structure through the inlet and outlet ends. An external water cooler adjusts the temperature of the temperature-regulating medium according to the requirements of simulated vehicle testing, thereby simulating the battery's condition in a specific temperature environment and obtaining a temperature change curve. This setup allows for testing of stress, thickness, and temperature parameters during battery testing, simulating real-world usage scenarios for the battery cell. It achieves coupling between cell performance and physical quantities such as cell thickness, stress, and temperature, providing technical support for cell design, mechanism research, and failure analysis.

[0005] The above-mentioned solution detects the battery's electrical performance by measuring static pressure changes during use. However, in actual use, the battery is installed in the vehicle, and in addition to static pressure, there is also dynamic pressure during driving. The existing testing equipment tests only one state and is not suitable for testing all pressure scenarios from static to dynamic, which is not in line with the actual stress environment of solid-state batteries in electric vehicles. At the same time, solid-state batteries may experience thermal runaway, or even fire and explosion, due to electrolyte cracking and electrode short circuits during high-voltage testing. There is no active fire extinguishing mechanism, and the flames can easily spread during a fire, damaging equipment and endangering personnel safety. Furthermore, the large amount of heat released by the battery fire is directly discharged and not utilized. Summary of the Invention

[0006] The purpose of this invention is to provide a real-time monitoring device for testing the electrical performance of solid-state batteries, addressing the shortcomings of existing solid-state battery electrical performance testing devices mentioned in the background. These devices detect battery electrical performance through static pressure changes during use. However, in actual use, batteries are installed in vehicles, subject to dynamic pressure during driving in addition to static pressure. Existing testing devices only test a single state, making it inconvenient to cover the full pressure scenario testing from static to dynamic, thus failing to match the actual stress environment of solid-state batteries in electric vehicles. Furthermore, during high-voltage testing, solid-state batteries may experience thermal runaway due to electrolyte cracking or electrode short circuits, potentially leading to fire and explosion. There is no active fire suppression mechanism, and flames can easily spread during a fire, damaging equipment and endangering personnel safety. Moreover, the large amount of heat released by a battery fire is directly discharged without being utilized.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a real-time monitoring device for testing the electrical performance of solid-state batteries, comprising a workbench, a top frame on the top of the workbench, a mounting platform in the center of the top surface of the workbench, the mounting platform for mounting the battery body, positioning chambers on both sides of the mounting platform for positioning and covering the battery body via electric push rods, a top plate at the bottom of the top frame for being driven by electric push rods, the bottom of the top plate being fixedly connected to a pressure plate abutting the top of the battery body via a connector, a pressure sensor being installed inside the pressure plate, and a charge / discharge tester and an impedance analyzer on the front and rear sides of the workbench being connected to the positive and negative terminals of the battery body via electrode connectors, respectively;

[0008] A dynamic simulation component is provided between the top plate and the pressure plate and below the mounting platform, and the dynamic simulation component causes the mounting platform to vibrate to simulate the actual driving situation.

[0009] The positioning chamber itself is a hollow structure. The interior of the positioning chamber is lined with heat-conducting pipes, and the exterior is equipped with semiconductor cooling chips at equal intervals. The left and right sides of the workbench are equipped with heat storage and recovery components for recovering and utilizing the heat from the overload and fire of the battery body. The heat storage and recovery components are used for the environmental temperature regulation of subsequent tests.

[0010] Furthermore, the positioning chamber is configured with a "U"-shaped structure, the positioning chamber fits the outer side of the battery body, and the front and rear sides of the positioning chamber are reserved with holes for electrode connectors to pass through. A central control panel is provided on the front right side of the workbench.

[0011] Furthermore, the connecting component between the top plate and the pressure plate includes sleeves symmetrically fixed to the bottom of the top plate, a piston slidably connected to the bottom of the sleeve, the bottom of the piston being fixedly connected to the top of the pressure plate, and a soft pad being provided at the bottom of the pressure plate in contact with the battery body.

[0012] Furthermore, the dynamic simulation component includes a piezoelectric sheet disposed in a sleeve, the piezoelectric sheet being connected to the inner top of the sleeve via a first spring, the bottom of the piezoelectric sheet abutting against the top of the piston, and the electrical energy generated by the compression of the piezoelectric sheet being stored in a battery.

[0013] Furthermore, the bottom of the mounting platform is symmetrically equipped with horizontal plates at the front and back, and a reciprocating screw is rotatably connected between the horizontal plates. The rear side of the reciprocating screw is fixedly connected to the iron core. The iron core is located in the middle of the magnetic plate. A coil is wound around the outer side of the magnetic plate. The coil is connected to the battery through a wire. The battery is installed on the rear horizontal plate.

[0014] Furthermore, the magnetic plate is in the magnetic field formed by the iron core and the coil. The iron core, the coil and the magnetic plate are arranged on the rear horizontal plate. The greater the current provided by the battery, the faster the magnetic plate rotates.

[0015] Furthermore, the magnetic plate drives the movable frame to move back and forth via a reciprocating screw. The left and right sides of the movable frame are slidably connected to the bottom of the fixed plate. The fixed plate is slidably connected with top rods at equal intervals. A second spring is installed between the top rod and the bottom of the fixed plate. The top of the fixed plate is set as a semi-circular structure. The top of the fixed plate and the bottom of the top rod intermittently abut against each other. The top rod impacts and vibrates the mounting platform by sliding vertically.

[0016] Furthermore, an infrared temperature sensor is installed on the opposite surface of the positioning chamber. After the infrared temperature sensor detects a high temperature, it activates the solenoid valve on the tank. The tank is connected to the fire extinguishing agent nozzle through a connecting pipe. The fire extinguishing agent nozzle is symmetrically arranged on the front and rear sides of the positioning chamber, with the outlet of the fire extinguishing agent nozzle facing the battery body. The tank is symmetrically arranged on the left and right sides of the workbench.

[0017] Furthermore, the heat storage and recovery component includes a heat-conducting pipe through which heat-conducting oil flows. The heat-conducting pipe is connected to an outer phase change heat storage tank via a connecting pipe and a high-temperature pump. The inner side of the phase change heat storage tank is filled with a composite phase change material of paraffin wax and expanded graphite, and the outer layer of the phase change heat storage tank is wrapped with thick insulation cotton to reduce heat loss.

[0018] Furthermore, the outlet of the phase change heat storage tank is connected to the heat exchanger via a connecting pipe, and the outlet of the heat exchanger is connected to the heat transfer pipe in the positioning chamber via a circulating pump. The phase change substance and the heat transfer oil in the phase change heat storage tank are placed separately. The phase change heat storage tank, the heat exchanger, and the circulating pump are symmetrically arranged on both sides of the workbench.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This real-time monitoring device for solid-state battery electrical performance testing, through the coordinated operation of pressure monitoring and electrical performance testing modules, dynamic environment simulation modules, and safety protection and heat recovery modules, enables real-time monitoring of the electrical performance of solid-state batteries under static and dynamic pressure and different temperature environments. It also features overload protection and energy reuse functions.

[0021] 1. Furthermore, a preset pressure is applied to the pressure plate, and the pressure sensor monitors the pressure status in real time. The charge / discharge tester and impedance analyzer simultaneously collect electrical performance parameters. The dynamic simulation component simulates the vibration environment during vehicle operation, causing the mounting platform to vibrate periodically. At this time, the pressure sensor and electrical performance equipment continuously record the performance changes under dynamic pressure. If the battery body experiences high temperature or fire due to pressure overload, the infrared temperature sensor triggers the fire extinguishing device, and the heat pipe starts heat recovery. The positioning chamber integrates temperature control and fire extinguishing functions, and together with the heat storage and recovery component, heat is reused. This achieves comprehensive testing of solid-state batteries under static and dynamic pressure, while also possessing safety protection and energy-saving advantages.

[0022] 2. Furthermore, the piezoelectric sheet inside the sleeve is squeezed as the piston moves up and down, and the generated electrical energy is stored in the battery. The battery supplies power to the coil, causing the magnetic plate to generate an alternating magnetic field, which drives the iron core and the reciprocating screw to rotate. The reciprocating screw drives the moving frame to slide back and forth along the bottom of the fixed plate, causing the top of the moving frame to intermittently hit the top rod. The top rod bounces up and down under the action of the second spring, repeatedly hitting the bottom of the mounting platform to simulate the bumps and vibrations of a vehicle in motion.

[0023] 3. Furthermore, the infrared temperature sensor monitors the battery body temperature in real time. When a high temperature is detected and it is determined to be a sign of an impending fire, the solenoid valves on both sides of the workbench are immediately triggered, and the fire extinguishing agent is sprayed onto the battery body through the fire extinguishing agent nozzle to promptly contain the fire.

[0024] 4. Furthermore, the heat pipes transfer the high temperature released by the fire or the heat generated by the test to the phase change heat storage tank through a high-temperature pump. The paraffin and expanded graphite composite phase change material in the phase change heat storage tank absorbs and stores the heat. When it is necessary to adjust the test environment temperature later, the circulation pump transfers the heat in the phase change heat storage tank back to the heat pipes in the positioning chamber through a heat exchanger. The temperature adjustment is achieved in conjunction with the external semiconductor cooling chip, which facilitates subsequent use. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall front structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall rear view structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the front section structure of the sleeve, piston, and pressure plate of the present invention;

[0028] Figure 4 This is a top view of the workbench structure of the present invention;

[0029] Figure 5 This is a top view of the overall structure of the dynamic simulation component of the present invention;

[0030] Figure 6 This is a schematic diagram of the explosion-proof structure of the dynamic simulation component of the present invention from a bottom view.

[0031] Figure 7 This is a top view schematic diagram of the connection structure of the iron core, coil, magnetic plate and reciprocating lead screw of the present invention;

[0032] Figure 8 This is a top-section view of the positioning chamber structure of the present invention;

[0033] Figure 9 This is a top view schematic diagram of the heat recovery and utilization component of the present invention;

[0034] Figure 10 This is a schematic diagram of the exploded structure of the heat recovery and utilization component of the present invention.

[0035] In the diagram: 1. Workbench; 2. Top frame; 3. Mounting platform; 4. Battery body; 5. Positioning chamber; 6. Top plate; 7. Sleeve; 8. Piston; 9. Pressure plate; 10. Pressure sensor; 11. Piezoelectric element; 12. First spring; 13. Battery; 14. Horizontal plate; 15. Iron core; 16. Coil; 17. Magnetic plate; 18. Reciprocating screw; 19. Moving frame; 20. Fixed plate; 21. Top rod; 22. Second spring; 23. Charge / discharge tester; 24. Impedance analyzer; 25. Electrode connector; 26. Infrared temperature sensor; 27. Extinguishing agent nozzle; 28. Tank; 29. ​​Heat pipe; 30. Semiconductor refrigeration chip; 31. Phase change heat storage tank; 32. Heat exchanger; 33. Circulation pump. Detailed Implementation

[0036] 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.

[0037] Example 1: Please refer to Figure 1 - Figure 2 and Figure 4As shown, the present invention provides the following technical solution: a real-time monitoring device for testing the electrical performance of solid-state batteries, comprising a workbench 1, a top frame 2 on the top of the workbench 1, a mounting platform 3 in the middle of the top surface of the workbench 1, the mounting platform 3 for mounting the battery body 4, positioning chambers 5 on both sides of the mounting platform 3 via electric push rods to position and cover the battery body 4, a top plate 6 at the bottom of the top frame 2 via an electric push rod, the bottom of the top plate 6 being fixedly connected to a pressure plate 9 abutting the top of the battery body 4 via a connector, a pressure sensor 10 being installed inside the pressure plate 9, and charging and discharging measurements on the front and rear sides of the workbench 1. Test instrument 23 and impedance analyzer 24 are connected to the positive and negative terminals of battery body 4 through electrode connector 25 respectively. Dynamic simulation components are set between top plate 6 and pressure plate 9 and below mounting platform 3. The dynamic simulation components cause the mounting platform 3 to vibrate to simulate driving conditions. The positioning chamber 5 itself is set as a hollow structure. Heat conduction pipes 29 are laid inside the positioning chamber 5 and semiconductor cooling chips 30 are installed at equal intervals on the outside. Heat storage recovery components for recovering and utilizing the heat of overload fire of battery body 4 are set on the left and right sides of the workbench 1. The heat storage recovery components are used for the ambient temperature regulation of subsequent tests.

[0038] refer to Figure 1 - Figure 2 and Figure 4 As shown, during use, the battery body 4 to be tested is placed on the mounting platform 3 of the workbench 1. The electric push rod drives the positioning chamber 5 to position and cover the battery body 4, fixing its position. The charge / discharge tester 23 and the impedance analyzer 24 are connected to the positive and negative terminals of the battery body 4 through the electrode connectors 25, respectively. Then, the electric push rod at the bottom of the top frame 2 drives the top plate 6 to move down, and the push rod connector of the top plate 6 drives the pressure plate 9 to move down synchronously, thereby applying a preset pressure to the pressure plate 9. The pressure sensor 10 monitors the pressure status in real time, and the charge / discharge tester 23 and the impedance analyzer 24 synchronously collect electrical performance parameters. The dynamic simulation component below the mounting platform 3 simulates the vibration ring during vehicle operation. The environment causes the mounting platform 3 to vibrate periodically. At this time, the pressure sensor 10 and the electrical performance equipment continuously record the performance changes under dynamic pressure. If the battery body 4 experiences high temperature or catches fire due to pressure overload, the infrared temperature sensor 26 triggers the fire extinguishing device. At the same time, the heat pipe 29 starts heat recovery. The positioning chamber 5 integrates temperature control and fire extinguishing functions. Together with the heat storage and recovery components, heat is reused to form a closed loop of "testing-simulation-protection-energy saving". The recovered heat can be used for temperature adjustment in subsequent tests to reduce system energy consumption. This realizes comprehensive testing of solid-state batteries under static and dynamic pressure, while also having safety protection and energy-saving advantages, providing experimental data that is closer to practical applications for battery research and development.

[0039] Example 2:

[0040] Based on Embodiment 1, a dynamic simulation mechanism is also disclosed, which simulates the dynamic pressure during vehicle operation through mechanical vibration to recreate actual driving conditions. Please refer to [link / reference]. Figure 3 - Figure 7 As shown, its specific structure is as follows: the positioning chamber 5 is set as a "U" shaped structure, the positioning chamber 5 fits the outer side of the battery body 4, the front and rear sides of the positioning chamber 5 are reserved with holes for the electrode connector 25 to pass through, the right front of the workbench 1 is provided with a central control panel, the connecting part between the top plate 6 and the pressure plate 9 includes a sleeve 7 symmetrically fixed to the bottom of the top plate 6, the bottom of the sleeve 7 is slidably connected to a piston 8, the bottom of the piston 8 is fixedly connected to the top of the pressure plate 9, the bottom of the pressure plate 9 is provided with a soft pad at the contact part with the battery body 4, the dynamic simulation component includes a piezoelectric sheet 11 set in the sleeve 7, the piezoelectric sheet 11 is connected to the inner top of the sleeve 7 through the first spring 12, the bottom of the piezoelectric sheet 11 abuts against the top of the piston 8, and the electrical energy generated by the compression of the piezoelectric sheet 11 is stored in the battery 13.

[0041] like Figure 3 - Figure 4 As shown, during pressure application and monitoring: the electric push rod at the bottom of the top frame 2 pushes the top plate 6 downward, which in turn drives the pressure plate 9 to squeeze the battery body 4 through the sleeve 7 and piston 8. The pressure sensor 10 inside the pressure plate 9 detects the pressure value in real time and transmits the data to the central control panel to achieve precise pressure control. During electrical performance parameter acquisition: the charge / discharge tester 23 and the impedance analyzer 24 are connected to the positive and negative terminals of the battery body 4 through the electrode connector 25. During the pressure application process, parameters such as voltage, current, and impedance are collected simultaneously to provide data support for analyzing the impact of interface contact on battery performance.

[0042] like Figure 3 As shown, during use, the piezoelectric sheet 11 inside the sleeve 7 is squeezed as the piston 8 moves up and down, and the generated electrical energy is stored in the battery 13 to provide power for dynamic simulation. The greater the pressure on the piezoelectric sheet 11, the more electricity is generated. The soft pad at the bottom of the pressure plate 9 can better contact the surface of the battery body 4, so that the force is more uniform when pressure is applied.

[0043] like Figure 5 - Figure 7As shown, symmetrical horizontal plates 14 are installed at the bottom of the mounting platform 3. A reciprocating screw 18 is rotatably connected between the horizontal plates 14. The rear side of the reciprocating screw 18 is fixedly connected to the iron core 15. The iron core 15 is located in the middle of the magnetic plate 17. A coil 16 is wound around the outer side of the magnetic plate 17. The coil 16 is connected to the battery 13 through a wire. The battery 13 is installed on the rear horizontal plate 14. The magnetic plate 17 is in the magnetic field formed by the iron core 15 and the coil 16. The iron core 15, the coil 16, and the magnetic plate 17 are arranged on the rear horizontal plate 14 to store the battery. The greater the current supplied by pool 13, the faster the rotation speed of magnetic plate 17. Magnetic plate 17 drives moving frame 19 to move back and forth via reciprocating screw 18. The left and right sides of moving frame 19 are slidably connected to the bottom of fixed plate 20. Top rods 21 are slidably connected through fixed plate 20 at equal intervals. A second spring 22 is installed between top rod 21 and the bottom of fixed plate 20. The top of fixed plate 20 is set as a semi-circular structure. The top of fixed plate 20 and the bottom of top rod 21 intermittently abut against each other. Top rod 21 impacts and vibrates the mounting platform 3 through vertical sliding.

[0044] As shown in the figure, during use, the battery 13 supplies power to the coil 16, causing the magnetic plate 17 to generate an alternating magnetic field, which drives the iron core 15 and the reciprocating screw 18 to rotate. The reciprocating screw 18 drives the moving frame 19 to slide back and forth along the bottom of the fixed plate 20, causing the top of the moving frame 19 to intermittently hit the top rod 21. The top rod 21 bounces up and down under the action of the second spring 22, repeatedly hitting the bottom of the mounting platform 3 to simulate the bumps and vibrations during vehicle operation. The vibration frequency can be adjusted by the current of the coil 16 to achieve a composite environment test of static pressure and dynamic vibration, which is more in line with the actual stress scenario of solid-state batteries in electric vehicles.

[0045] Example 3:

[0046] Based on Embodiment 2, a mechanism for safety protection and heat recovery is also disclosed to achieve overload protection and energy reuse. Please refer to [link / reference]. Figure 1 - Figure 2 , Figure 4 and Figure 8 - Figure 10 As shown, its specific structure is as follows: an infrared temperature sensor 26 is installed on the opposite surface of the positioning chamber 5. After the infrared temperature sensor 26 detects high temperature, it activates the solenoid valve on the tank 28. The tank 28 is connected to the fire extinguishing agent nozzle 27 through a connecting pipe. The fire extinguishing agent nozzle 27 is symmetrically arranged on the front and rear sides of the positioning chamber 5. The outlet of the fire extinguishing agent nozzle 27 faces the side of the battery body 4. The tank 28 is symmetrically arranged on the left and right sides of the workbench 1.

[0047] like Figure 1 - Figure 2 and Figure 8 - Figure 10As shown, during use, the infrared temperature sensor 26 inside the positioning chamber 5 monitors the temperature of the battery body 4 in real time. When a high temperature is detected and it is determined to be a sign of an impending fire, the solenoid valves of the tanks 28 on both sides of the workbench 1 are immediately triggered, and the fire extinguishing agent is sprayed onto the battery body 4 through the fire extinguishing agent nozzle 27 to promptly contain the fire. At the same time, the "U"-shaped structure of the positioning chamber 5 forms an enclosing space to prevent the flames from spreading.

[0048] like Figure 8 - Figure 10 As shown, the heat storage and recovery assembly includes a heat transfer pipe 29 through which heat transfer oil flows. The heat transfer pipe 29 is connected to the outer phase change heat storage tank 31 via a connecting pipe and a high-temperature pump. The inner side of the phase change heat storage tank 31 is filled with a composite phase change material of paraffin wax and expanded graphite. The outer layer of the phase change heat storage tank 31 is wrapped with thick insulation cotton to reduce heat loss. The outlet of the phase change heat storage tank 31 is connected to the heat exchanger 32 via a connecting pipe. The outlet of the heat exchanger 32 is connected to the heat transfer pipe 29 in the positioning chamber 5 via a circulation pump 33. The phase change material in the phase change heat storage tank 31 is placed separately from the heat transfer oil. The phase change heat storage tank 31, the heat exchanger 32 and the circulation pump 33 are symmetrically arranged on both sides of the workbench 1.

[0049] like Figure 8 - Figure 10 As shown, during use, when the battery catches fire or is tested at high temperature, the heat pipe 29 inside the positioning chamber 5 transfers the high temperature released by the fire or the heat generated by the test to the phase change heat storage tank 31 through a high temperature resistant pump. The paraffin and expanded graphite composite phase change material in the phase change heat storage tank 31 absorbs and stores the heat. When it is necessary to adjust the test environment temperature later, the circulation pump 33 transfers the heat in the phase change heat storage tank 31 back to the heat pipe 29 of the positioning chamber 5 through the heat exchanger 32. With the temperature adjustment achieved by the external semiconductor cooling chip 30, the heat recovery can reduce the energy consumption of electric heating.

[0050] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0051] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A real-time monitoring device for testing the electrical performance of a solid-state battery, comprising a workbench (1), a top frame (2) on the top of the workbench (1), a mounting platform (3) in the middle of the top surface of the workbench (1), the mounting platform (3) for mounting the battery body (4), the mounting platform (3) is positioned and covered by positioning chambers (5) driven by electric push rods on both sides, the bottom of the top frame (2) is driven by an electric push rod to drive a top plate (6), the bottom of the top plate (6) is fixedly connected to a pressure plate (9) that abuts against the top of the battery body (4) through a connector, a pressure sensor (10) is provided in the pressure plate (9), and a charge / discharge tester (23) and an impedance analyzer (24) on the front and rear sides of the workbench (1) are respectively connected to the positive and negative terminals of the battery body (4) through electrode connectors (25); Its features are: A dynamic simulation component is provided between the top plate (6) and the pressure plate (9) and below the mounting platform (3), and the dynamic simulation component causes the mounting platform (3) to vibrate to simulate the actual driving situation; The dynamic simulation component includes a piezoelectric plate (11) disposed in a sleeve (7). The piezoelectric plate (11) is connected to the top of the inner side of the sleeve (7) through a first spring (12). The bottom of the piezoelectric plate (11) abuts against the top of the piston (8). The electrical energy generated by the compression of the piezoelectric plate (11) is stored in a battery (13). A horizontal plate (14) is symmetrically installed at the bottom of the mounting platform (3). A reciprocating screw (18) is rotatably connected between the horizontal plates (14). The rear side of the reciprocating screw (18) is fixedly connected to an iron core (15). The iron core (15) is located in the middle of a magnetic plate (17). A coil (16) is wound around the outer side of the magnetic plate (17). The coil (16) is connected to the battery (13) through a wire. The battery (13) is installed on the rear horizontal plate (14). The magnetic plate (16) is symmetrically installed in the sleeve (7) through a first spring (12). The bottom of the piezoelectric plate (11) abuts against the top of the piston (8). The electrical energy generated by the compression of the piezoelectric plate (11) is stored in a battery (13 ... 7) In the magnetic field formed by the iron core (15) and the coil (16), the iron core (15), the coil (16) and the magnetic plate (17) are set on the rear horizontal plate (14). The larger the current provided by the battery (13), the faster the magnetic plate (17) rotates. The magnetic plate (17) drives the moving frame (19) to move back and forth through the reciprocating screw (18). The left and right sides of the moving frame (19) are slidably connected to the bottom of the fixed plate (20). The fixed plate (20) is slidably connected with the top rod (21) at equal intervals. A second spring (22) is installed between the top rod (21) and the bottom of the fixed plate (20). The top of the fixed plate (20) is set as a semi-circular structure. The top of the fixed plate (20) and the bottom of the top rod (21) intermittently contact each other. The top rod (21) impacts and vibrates the mounting platform (3) by vertical sliding. The positioning chamber (5) is a hollow structure. The interior of the positioning chamber (5) is laid with heat-conducting pipes (29) and the exterior is equipped with semiconductor cooling chips (30) at equal intervals. The workbench (1) is equipped with heat storage and recovery components on the left and right sides to recover and utilize the heat from the overload fire of the battery body (4). The heat storage and recovery components are used for the environmental temperature regulation of subsequent tests.

2. The solid-state battery electrical performance testing device for real-time monitoring according to claim 1, characterized in that: The positioning chamber (5) is configured as a "U" shaped structure. The positioning chamber (5) fits the outer side of the battery body (4). The front and rear sides of the positioning chamber (5) are reserved with holes for the electrode connector (25) to pass through. The workbench (1) is provided with a central control panel on the right front.

3. The solid-state battery electrical performance testing device for real-time monitoring according to claim 2, characterized in that: The connecting piece between the top plate (6) and the pressure plate (9) includes a sleeve (7) symmetrically fixed to the bottom of the top plate (6). A piston (8) is slidably connected to the bottom of the sleeve (7). The bottom of the piston (8) is fixedly connected to the top of the pressure plate (9). A soft pad is provided at the contact part between the bottom of the pressure plate (9) and the battery body (4).

4. The solid-state battery electrical performance testing device for real-time monitoring according to claim 1, characterized in that: An infrared temperature sensor (26) is provided on the opposite surface of the positioning chamber (5). After the infrared temperature sensor (26) detects high temperature, it activates the solenoid valve on the tank (28). The tank (28) is connected to the fire extinguishing agent nozzle (27) through a connecting pipe. The fire extinguishing agent nozzle (27) is symmetrically arranged on the front and rear sides of the positioning chamber (5). The outlet of the fire extinguishing agent nozzle (27) faces the battery body (4). The tank (28) is symmetrically arranged on the left and right sides of the workbench (1).

5. The solid-state battery electrical performance testing device for real-time monitoring according to claim 1, characterized in that: The heat storage and recovery assembly includes a heat-conducting pipe (29) through which heat-conducting oil flows. The heat-conducting pipe (29) is connected to the outer phase change heat storage tank (31) via a connecting pipe and a high-temperature pump. The inner side of the phase change heat storage tank (31) is filled with a composite phase change material of paraffin wax and expanded graphite. The outer layer of the phase change heat storage tank (31) is wrapped with thick insulation cotton to reduce heat loss.

6. The solid-state battery electrical performance testing device for real-time monitoring according to claim 5, characterized in that: The outlet of the phase change heat storage tank (31) is connected to the heat exchanger (32) through a connecting pipe. The outlet of the heat exchanger (32) is connected to the heat transfer pipe (29) in the positioning chamber (5) through a circulating pump (33). The phase change material in the phase change heat storage tank (31) is placed separately from the heat transfer oil. The phase change heat storage tank (31), the heat exchanger (32) and the circulating pump (33) are symmetrically arranged on both sides of the workbench (1).

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