Real-time monitoring solid-state battery electrical property testing device

Abstract

The invention discloses a real-time monitoring solid-state battery electrical performance testing device, and relates to the field of battery electrical performance detection devices.The device comprises a workbench, a top frame is arranged at the top of the workbench, positioning cabins are driven by two sides of a placement table through electric push rods to position and wrap a battery body, and a top plate is driven by the bottom of the top frame through the electric push rods; the bottom of the top plate is fixedly connected with a pressing plate through a connecting piece, and dynamic simulation assemblies are arranged between the top plate and the pressing plate and below the placement table; a heat conduction pipe is laid in the positioning cabin, and heat storage recovery assemblies are arranged on the left side and the right side of the workbench. According to the solid-state battery electrical performance testing device capable of monitoring in real time, in the using process, through cooperative operation of the pressure monitoring and electrical performance testing module, the dynamic environment simulation module and the safety protection and heat recovery module, electrical performance real-time monitoring of a solid-state battery under static and dynamic pressure and different temperature environments is achieved; and meanwhile, the overload protection and energy recycling functions are achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery electrical performance testing devices, in particular to a solid-state battery electrical performance testing device for real-time monitoring. BACKGROUND

[0002] Under the background of rapid development of the new energy industry, solid-state batteries have become the core development direction of the next generation of power batteries due to the advantages of high energy density, excellent safety and long cycle life. The interface contact state between the electrode and the solid-state electrolyte of the solid-state battery directly determines the ion conduction efficiency and electrical performance. Pressure is a key factor affecting the interface contact. Proper pressure can reduce the interface impedance and improve the ion migration rate. Insufficient pressure leads to poor interface contact and performance degradation. Excessive pressure may damage the electrode or electrolyte structure and cause safety hazards. Therefore, in the research and production process of solid-state batteries, precise pressure control and synchronous electrical performance testing are required to explore the correlation between pressure and electrical performance, provide a basis for battery structure optimization and process improvement. The existing solid-state battery electrical performance testing device has a complex structure, is tedious to operate and has low testing efficiency.

[0003] To solve the above defects, the prior art (Chinese patent with publication number CN217787317U and publication date of November 11, 2022) electrical performance testing device is provided with a pressure adjusting assembly, 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 electrical performance testing of the test sample under different pressure conditions, and being high in testing efficiency and simple and convenient to operate.

[0004] The prior art (Chinese patent with publication number CN218181061U and publication date 2022-12-30) battery electrical performance testing device forms a clamping area through a first clamping plate assembly, a pressure sensor is arranged in a second clamping plate assembly, and a battery to be tested is arranged in the clamping area. In this way, the first clamping plate assembly can apply stress to the battery, and when the battery expands under the action of the stress, the size of the clamping area increases, and the change of the first clamping plate assembly is transmitted to the second clamping plate assembly, so that the second clamping plate assembly also changes, the size of the detection area changes, and the pressure sensor in the detection area senses the pressure value of the moving part of the second clamping plate assembly, thereby reflecting the tension change of the battery. At the same time, in the process of increasing the size of the clamping area, the moving part of the first clamping plate assembly triggers the displacement sensor, and the displacement sensor detects the movement distance of the part to reflect the thickness change of the battery. At the same time of the above process, since the first clamping plate assembly has a cavity structure, the cavity structure can be circulated into the temperature adjusting medium through the inlet end and the outlet end, the temperature of the temperature adjusting medium is adjusted according to the requirements of the simulated vehicle test by the external water cooler, so as to simulate the situation of the battery in a specific temperature environment and obtain a temperature change curve. The above arrangement can test the stress, thickness and temperature parameters of the battery during testing, simulate the real use scenario of the battery cell, realize the coupling of the performance of the battery cell and the physical quantities such as the thickness, stress and temperature of the battery cell, and provide technical support for battery cell design, mechanism research and failure analysis.

[0005] The above scheme detects the electrical performance of the battery by static pressure change during use, but in actual use, the battery is installed in a vehicle, and in addition to static pressure, there is also dynamic pressure during driving. The existing testing device has a single test state and cannot cover the full pressure scene test from static to dynamic, which does not fit the actual stress environment of solid-state batteries in electric vehicles. At the same time, in high-voltage testing of solid-state batteries, heat runaway may be caused by electrolyte cracking and electrode short circuit, even fire and explosion, without active fire extinguishing mechanism, and the flame is easy to spread during fire, damaging equipment and endangering personnel safety. In addition, a large amount of heat released by the battery is directly discharged and not utilized. SUMMARY

[0006] The purpose of the present application is to provide a real-time monitoring solid-state battery electrical performance testing device to solve the above-mentioned prior art solid-state battery electrical performance testing device, which detects the electrical performance of the battery by changing the static pressure during use, but in actual use, the battery is installed in the vehicle, and in addition to the static pressure, there is also a dynamic pressure during driving, the existing testing device tests a single state, which cannot cover the full pressure scene test from static to dynamic, and it is not suitable for the actual stress environment of solid-state batteries in electric vehicles, and in high-voltage testing, the electrolyte may crack, the electrode may short circuit, and heat loss may occur, even fire and explosion, without active fire extinguishing mechanism, the flame is easy to spread during fire, damaging equipment and endangering personnel safety, and a large amount of heat released by the battery is directly discharged without being utilized.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a real-time monitoring solid-state battery electrical performance testing device, comprising a workbench, a top frame is arranged on the top of the workbench, a placement table is arranged in the middle of the top surface of the workbench, the placement table is used to place a battery body, positioning cabins are driven by electric push rods on both sides of the placement table to position and cover the battery body, a top plate is driven by an electric push rod at the bottom of the top frame, a pressure plate is fixedly connected with the top of the battery body at the bottom of the top plate through a connecting piece, a pressure sensor is arranged in the pressure plate, and a charge-discharge tester and an impedance analyzer are respectively connected with the positive and negative electrodes of the battery body through electrode connecting pieces on the front and rear sides of the workbench. A dynamic simulation assembly is arranged between the top plate and the pressure plate and below the placement table, and the dynamic simulation assembly vibrates the placement table to simulate driving live; The positioning cabin is arranged in a hollow structure, heat pipes are laid in the interior of the positioning cabin, and semiconductor refrigerating sheets are installed at equal intervals on the exterior of the positioning cabin, a heat storage and recycling assembly for recycling the heat generated by the overloading and fire of the battery body is arranged on the left and right sides of the workbench, and the heat storage and recycling assembly is used for adjusting the environmental temperature for subsequent testing.

[0008] Further, the positioning cabin is arranged in a "U" shape, the positioning cabin is attached to the outer side of the battery body, holes are reserved on the front and rear sides of the positioning cabin for the electrode connecting pieces to pass through, and a central control panel is arranged on the right front side of the workbench.

[0009] Further, the connecting piece between the top plate and the pressure plate comprises a sleeve fixed symmetrically on the bottom of the top plate, a piston is slidably connected to the bottom of the sleeve, the bottom of the piston is fixedly connected with the top of the pressure plate, and a soft pad is arranged on the contact part between the bottom of the pressure plate and the battery body.

[0010] Further, the dynamic simulation assembly comprises a piezoelectric sheet arranged in the sleeve, the piezoelectric sheet is connected with the inner top of the sleeve through the first spring, the bottom of the piezoelectric sheet is in contact with the top of the piston, and the electric energy generated by the piezoelectric sheet is stored in the storage battery.

[0011] Further, the bottom of the installation table is symmetrically provided with horizontal plates, reciprocating lead screws are rotatably connected between the horizontal plates, the rear side of the reciprocating lead screw is fixedly connected with an iron core, the iron core is located in the middle of the magnetic plate, a coil is arranged on the outer side of the magnetic plate, the coil is connected with the storage battery through a wire, and the storage battery is arranged on the rear horizontal plate.

[0012] Further, the magnetic plate is located 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, and the greater the current provided by the storage battery, the faster the rotating speed of the magnetic plate.

[0013] Further, the magnetic plate drives the moving frame to move back and forth through the reciprocating lead screw, the left and right sides of the moving frame are slidably connected to the bottom of the fixed plate, top rods are slidably connected to the bottom of the fixed plate at equal intervals, the second spring is arranged between the top rod and the bottom of the fixed plate, the top of the fixed plate is arranged in a semicircular structure, the top of the fixed plate intermittently contacts the bottom of the top rod, and the top rod impacts and vibrates the installation table through vertical sliding.

[0014] Further, the opposite surface of the positioning cabin is provided with an infrared temperature sensor, the electromagnetic valve on the tank is started after the infrared temperature sensor detects high temperature, the tank is connected with the fire extinguishing agent nozzle through the connecting pipe, the fire extinguishing agent nozzle is symmetrically arranged on the front and rear sides of the positioning cabin, the outlet of the fire extinguishing agent nozzle faces the side of the battery body, and the tank is symmetrically arranged on the left and right sides of the workbench.

[0015] Further, the heat storage and recovery assembly comprises a heat conduction pipe in which heat conduction oil flows, the heat conduction pipe is connected with an outside phase change heat storage tank through a connecting pipe and a high-temperature-resistant pump, the inside of the phase change heat storage tank is filled with a composite phase change material of paraffin and expanded graphite, and the phase change heat storage tank is wrapped with thick thermal insulation cotton to reduce heat loss.

[0016] Further, the outlet of the phase change heat storage tank is connected with a heat exchanger through a connecting pipe, the outlet of the heat exchanger is connected with the heat conduction pipe in the positioning cabin through a circulating pump, the phase change material in the phase change heat storage tank and the heat conduction oil are separately placed, and the phase change heat storage tank, the heat exchanger and the circulating pump are symmetrically arranged on the two sides of the workbench.

[0017] Compared with the prior art, the present application has the following advantages: 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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

[0022] Figure 1 This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a schematic diagram of the overall rear view structure of the present invention; Figure 3 This is a schematic diagram of the front section structure of the sleeve, piston, and pressure plate of the present invention; Figure 4This is a top view of the workbench structure of the present invention; Figure 5 This is a top view schematic diagram of the overall structure of the dynamic simulation component of the present invention; 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. 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; Figure 8 This is a top-section view of the positioning chamber structure of the present invention; Figure 9 This is a top view of the heat recovery and utilization component of the present invention; Figure 10 This is a schematic diagram of the exploded structure of the heat recovery and utilization component of the present invention.

[0023] 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

[0024] 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.

[0025] 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.

[0026] 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.

[0027] Example 2: 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] Example 3: 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0037] 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 solid-state battery electrical performance test device, comprising a workbench (1), the top of the workbench (1) is provided with a top frame (2), the middle of the top surface of the workbench (1) is provided with a placement table (3), the placement table (3) is used for placing a battery body (4), the placement table (3) is positioned and covered on the battery body (4) by a positioning cabin (5) driven by an electric push rod on both sides, the bottom of the top frame (2) drives a top plate (6) by an electric push rod, the bottom of the top plate (6) is fixedly connected with a pressing plate (9) in contact with the top of the battery body (4) through a connecting piece, a pressure sensor (10) is arranged in the pressing plate (9), and a charge-discharge tester (23) and an impedance analyzer (24) on the front and rear sides of the workbench (1) are connected with the positive and negative electrodes of the battery body (4) through electrode connecting pieces (25) respectively. characterized in that The top plate (6) and the pressing plate (9) and the lower side of the placement table (3) are provided with a dynamic simulation assembly, and the dynamic simulation assembly makes the placement table (3) vibrate to simulate driving live conditions. The positioning cabin (5) is provided as a hollow structure, heat pipes (29) are laid in the positioning cabin (5), and semiconductor refrigerating sheets (30) are installed at equal intervals outside the positioning cabin (5), heat storage recovery assemblies for recycling heat generated by overloading and fire of the battery body (4) are arranged on the left and right sides of the workbench (1), and the heat storage recovery assemblies are used for adjusting the environmental temperature in subsequent tests.

2. The solid-state battery electrical performance testing device of claim 1, wherein: The positioning cabin (5) is provided as a "U" shaped structure, the positioning cabin (5) is attached to the outer side of the battery body (4), holes are reserved on the front and rear sides of the positioning cabin (5) for the electrode connecting pieces (25) to pass through, and a central control panel is arranged on the right front side of the workbench (1).

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 pressing plate (9) comprises a sleeve (7) fixed symmetrically on 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 with the top of the pressing plate (9), and a soft pad is arranged at the contact position between the bottom of the pressing plate (9) and the battery body (4).

4. The solid-state battery electrical performance testing device of claim 3, wherein: The dynamic simulation assembly comprises a piezoelectric sheet (11) arranged in the sleeve (7), the piezoelectric sheet (11) is connected with the inner top of the sleeve (7) through a first spring (12), the bottom of the piezoelectric sheet (11) is in contact with the top of the piston (8), and the electric energy generated by the piezoelectric sheet (11) being extruded is stored in a storage battery (13).

5. The solid-state battery electrical performance testing device for real-time monitoring of claim 4, wherein: Front and rear symmetrically mounted horizontal plates (14) are arranged on the bottom of the placement table (3), a reciprocating screw rod (18) is rotatably connected between the horizontal plates (14), the rear side of the reciprocating screw rod (18) is fixedly connected with an iron core (15), the iron core (15) is located in the middle of a magnetic plate (17), a coil (16) is wound on the outer side of the magnetic plate (17), the coil (16) is connected with the storage battery (13) through a wire, and the storage battery (13) is mounted on the rear horizontal plate (14).

6. The solid-state battery electrical performance testing device of claim 5, wherein: 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 transverse plate (14), the greater the current provided by the battery (13), the faster the rotating speed of the magnetic plate (17).

7. The real-time monitored solid-state battery electrical performance testing device of claim 6, wherein: The magnetic plate (17) drives the moving frame (19) to move back and forth through the reciprocating screw rod (18), the left and right sides of the moving frame (19) are slidably connected to the bottom of the fixed plate (20), the top rod (21) is slidably connected to the fixed plate (20) at equal intervals, the 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 arranged in a semicircular structure, the top of the fixed plate (20) and the bottom of the top rod (21) are intermittently in contact, and the top rod (21) impacts and vibrates the placement table (3) through vertical sliding.

8. The solid-state battery electrical performance testing device of claim 7, wherein: The opposite side of the positioning cabin (5) is provided with an infrared temperature sensor (26), and the infrared temperature sensor (26) starts the electromagnetic valve on the tank body (28) after detecting high temperature. The tank body (28) is connected with the fire extinguishing agent nozzle (27) through the connecting pipe, the fire extinguishing agent nozzle (27) is symmetrically arranged on the front and rear sides of the positioning cabin (5), the outlet of the fire extinguishing agent nozzle (27) faces the side of the battery body (4), and the tank body (28) is symmetrically arranged on the left and right sides of the workbench (1).

9. The real-time monitored solid-state battery electrical performance testing device of claim 8, wherein: The heat storage recovery assembly comprises a heat conduction pipe (29) through which heat conduction oil flows, the heat conduction pipe (29) is connected with an outside phase change heat storage tank (31) through a connecting pipe and a high-temperature-resistant pump, the inside of the phase change heat storage tank (31) is filled with a composite phase change material of paraffin and expanded graphite, and the phase change heat storage tank (31) is wrapped with thick thermal insulation cotton to reduce heat loss.

10. The solid-state battery electrical performance testing device for real-time monitoring of claim 9, wherein: The outlet of the phase change heat storage tank (31) is connected with a heat exchanger (32) through a connecting pipe, the outlet of the heat exchanger (32) is connected with the heat conduction pipe (29) in the positioning cabin (5) through a circulating pump (33), and the phase change material in the phase change heat storage tank (31) and the heat conduction oil are separately placed, and 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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