A test device for development of a polyanionic sodium-ion battery

Abstract

The present application relates to the technical field of battery experiment, especially to a kind of polyanion sodium-ion battery research and development test device. Including installation shell, the installation shell is layered in upper middle lower three layers, first cavity, second cavity, third cavity are arranged in sequence in the middle layer of installation shell, heater and refrigerator are arranged in the upper layer of installation shell, limiting strip is arranged in the three cavities of the middle layer of installation shell, the sliding shell of central symmetry distribution is slidably connected on the limiting strip of the middle layer of installation shell, transmission assembly is arranged in the second cavity of the middle layer of installation shell. High-temperature environment and cold environment are respectively arranged in the left and right cavities of the middle part of installation shell, the sliding shell moves in the middle part of installation shell, and then the battery on the sliding shell reciprocates between high-temperature environment and cold environment. In the process of testing the battery, the staff no longer needs to transfer the battery, and the safety of the staff is improved.

Description

Technical Field

[0001] This invention relates to the field of battery experimental technology, and in particular to a testing device for the research and development of polyanion sodium-ion batteries. Background Technology

[0002] Polyanionic sodium-ion batteries are batteries that use polyanionic materials with a specific structure as the positive electrode active material and sodium ions as the charge carrier. During the research and development of polyanionic sodium-ion batteries, to ensure battery stability, it is necessary to test the battery's performance and reliability. One aspect of battery performance testing involves placing the battery in a high-temperature environment for a period of time, then transferring it to a low-temperature environment for a period of time, repeatedly switching the temperature near the battery to test its stability and reliability under extreme conditions. Existing testing devices are of two types: one has only one cavity, where the temperature inside the cavity is constantly changed through cooling and heating devices after the battery is placed inside, but this results in significant temperature loss, and heating must overcome the temperature drop during cooling; the other has two cavities, a cooling cavity and a heating cavity, where the battery is moved continuously by personnel to achieve the testing purpose. However, during battery movement, due to the uncertainty of the battery's state, the battery may catch fire, causing injury or danger to personnel. Therefore, this invention proposes a testing device for the research and development of polyanionic sodium-ion batteries. Summary of the Invention

[0003] To overcome the drawback of battery testing and subsequent battery movement where the battery's condition is uncertain and the battery may catch fire during movement, causing injury to personnel, this invention provides a testing device for the research and development of polyanion sodium-ion batteries.

[0004] The technical solution is as follows: A testing device for the research and development of polyanion sodium-ion batteries includes a mounting shell, which has three layers: upper, middle, and lower. The middle layer of the mounting shell has a first cavity, a second cavity, and a third cavity arranged in sequence. A first switch door is hinged to the second cavity of the middle layer of the mounting shell. Second switch doors are hinged to both the first and third cavities of the middle layer of the mounting shell. A heater is located on the upper layer of the mounting shell near the first cavity, and a cooler is located on the upper layer of the mounting shell near the third cavity. Symmetrically distributed holes are provided between the first and second cavities and between the second and third cavities of the middle layer of the mounting shell. A rectangular... The mounting housing includes distributed sliding doors that are sealed to adjacent holes on the mounting shell. A rectangularly distributed electric telescopic rod is fixed to the upper side of the mounting shell, with its telescopic end passing through the mounting shell and fixed to the adjacent sliding door. Limiting strips are provided in the three cavities of the middle layer of the mounting shell. Centrally symmetrically distributed sliding shells are slidably connected to the limiting strips in the middle layer of the mounting shell. A rectangularly distributed first motor and several guide wheels are fixed to the mounting shell. A first transmission chain is wound between the output shaft of the first motor and the adjacent guide wheels, and the first transmission chain engages with the adjacent sliding shell. A transmission assembly for transmitting power to a battery is provided in the second cavity of the middle layer of the mounting shell.

[0005] As a preferred embodiment of the present invention, the first transmission chain is composed of a steel wire rope and cylindrical blocks evenly distributed thereon, and the lower side of the sliding shell is provided with a groove that engages with the adjacent first transmission chain.

[0006] As a preferred embodiment of the present invention, the transmission assembly includes symmetrically distributed first support plates disposed in the second cavity of the middle layer of the mounting shell. The lower layer of the mounting shell is fixedly connected to symmetrically distributed power components and guide wheels. The power components consist of electric rollers and tensioning wheels. The middle layer of the mounting shell is equipped with symmetrically distributed second transmission chains. The second transmission chains bypass adjacent first support plates, adjacent guide wheels, electric rollers within adjacent power components, and tensioning wheels therein. The second cavity of the middle layer of the mounting shell is fixedly connected to symmetrically distributed fixed shafts. The fixed shafts are connected to external electrical appliances via wires. Rotary shafts are rotatably connected to the fixed shafts. The fixed shafts are electrically connected to adjacent rotating shafts. The rotating shafts are fixedly connected to adjacent first support plates. Limiting strips are fixedly attached to the first support plates. First conductive plates are fixedly attached to the limiting strips of the first support plates. The rotating shafts are electrically connected to the symmetrically distributed first conductive plates on adjacent first support plates.

[0007] As a preferred embodiment of the present invention, the sliding shell is slidably connected to symmetrically distributed second conductive plates, the second conductive plates are in contact with adjacent first conductive plates, the sliding shell is fixedly connected to symmetrically distributed wires, the wires are electrically connected to adjacent second conductive plates, and a clamp is fixedly connected to one end of the wires away from the sliding shell.

[0008] In a preferred embodiment of the present invention, the second conductive plate is made of magnet, the first conductive plate is made of metal, and the clamp is made of conductive material.

[0009] As a preferred embodiment of the present invention, it further includes symmetrically distributed pull ropes, one end of each pull rope being fixed to an adjacent first support plate, the mounting shell being provided with symmetrically distributed electric rotating shafts, the other end of each pull rope passing through the mounting shell and wound around an adjacent electric rotating shaft, and the first support plate being rotatably connected to the mounting shell.

[0010] As a preferred embodiment of the present invention, a third switch door is hinged to the middle of the lower layer of the mounting shell, and a fixed plate is fixed to the middle of the lower layer of the mounting shell, with a first limiting plate and a second limiting plate rotatably connected within the fixed plate. A torsion spring is provided between the first limiting plate and the second limiting plate and the adjacent fixed plate. A sealing plate is slidably connected to the fixed plate, and the sealing plate is slidably connected to the mounting shell. A tension spring is fixed between the sealing plate and the mounting shell. A control mechanism is provided to the middle of the lower layer of the mounting shell, and the control mechanism is used to control the release of the adjacent sealing plates.

[0011] As a preferred embodiment of the present invention, the control mechanism includes a fixed shell, which is fixedly connected to the bottom of the mounting shell. The fixed shell is slidably connected to a sliding plate, and the sliding plate is fixedly connected to a second support plate via a round rod. The second support plate has a hole, and a spring is fixedly connected between the second support plate and the mounting shell. A first hydraulic telescopic rod is fixedly connected to the middle of the lower side of the mounting shell, and the telescopic end of the first hydraulic telescopic rod is fixedly connected to the adjacent second support plate. A second hydraulic telescopic rod is fixedly connected to the middle of the lower side of the mounting shell, and a limit frame is fixedly connected to the telescopic end of the second hydraulic telescopic rod. The limit frame is in a limiting fit with the adjacent sealing plate, and the second hydraulic telescopic rod and the adjacent first hydraulic telescopic rod are connected through a pipe.

[0012] As a preferred embodiment of the present invention, the lower layer of the mounting shell is fixedly connected to a symmetrically distributed second motor, the output shaft of the second motor is fixedly connected to a gear, and the sealing plate is fixedly connected to a rack that meshes with the gear on the adjacent output shaft of the second motor.

[0013] As a preferred embodiment of the present invention, the symmetrically distributed fixed shells are jointly fixed and connected to a smoke exhaust shell, and the mounting shell is fixed to a symmetrically distributed fire extinguishing tank. The fire extinguishing tank is provided with a nozzle, and an electric valve is provided inside the nozzle. The fire extinguishing tank is provided with high-pressure dry powder, and the nozzle of the fire extinguishing tank is located inside the mounting shell between the adjacent fixed plate and the adjacent second support plate.

[0014] The present invention has the following advantages: The present invention sets high temperature environment and cold environment in the left and right cavities in the middle of the mounting shell respectively. By moving the sliding shell in the middle of the mounting shell, the battery on the sliding shell can move back and forth between the high temperature environment and the cold environment. During the battery testing process, it is no longer necessary for the staff to move the battery, which improves the safety of the staff.

[0015] This invention tests whether a battery can still be used after being subjected to extreme environments. By contacting the first and second conductive plates, the battery is directly charged or discharged inside the mounting casing to test its performance. This method is convenient and quick, and the entire process does not require staff to open the switch door, further protecting the safety of the staff.

[0016] This invention improves the safety of the device by moving the battery into an independent, sealed cavity after it burns, thus preventing injury to workers and damage to the device. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the internal parts of the mounting shell of the present invention;

[0019] Figure 3 This is a three-dimensional structural diagram of the heater and cooler of the present invention;

[0020] Figure 4 This is a three-dimensional structural diagram of the sliding shell and the first motor of the present invention;

[0021] Figure 5 This is a three-dimensional structural diagram of the first motor and the first transmission chain of the present invention;

[0022] Figure 6 This is an exploded three-dimensional view of the sliding shell and the first transmission chain of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the sliding shell, wire, and clamp of the present invention;

[0024] Figure 8 This is a three-dimensional structural diagram of the mounting shell, the first support plate, and the pull rope of the present invention;

[0025] Figure 9 This is a three-dimensional structural diagram of the fixed shaft and rotating shaft of the present invention;

[0026] Figure 10 This is a three-dimensional structural diagram of the back of the mounting shell of the present invention;

[0027] Figure 11 This is a three-dimensional structural diagram of the fixing plate and sealing plate of the present invention;

[0028] Figure 12 This is a three-dimensional structural diagram of the fixing plate, the first limiting plate, and the second limiting plate of the present invention;

[0029] Figure 13 This is a three-dimensional structural diagram of the fixing plate and sealing plate of the present invention;

[0030] Figure 14 This is a three-dimensional structural diagram of the sealing plate and tension spring of the present invention;

[0031] Figure 15 This is a three-dimensional structural diagram of the fixing shell and the smoke exhaust shell of the present invention.

[0032] The labels in the attached diagram are as follows: 1-Mounting housing, 11-First switch door, 12-Second switch door, 13-Heater, 14-Refrigerator, 15-Sliding door, 16-Electric telescopic rod, 17-Sliding housing, 18-First motor, 19-First transmission chain, 2-First support plate, 21-Power component, 22-Second transmission chain, 23-Fixed shaft, 24-Rotating shaft, 25-First conductive plate, 26-Second conductive plate, 27-Wire, 28- Clamp, 3-Pull rope, 31-Electric rotating shaft, 4-Third switch door, 41-Fixing plate, 42-First limit plate, 43-Second limit plate, 44-Sealing plate, 45-Tension spring, 5-Fixing shell, 51-Sliding plate, 52-Second support plate, 53-Spring, 54-First hydraulic telescopic rod, 55-Second hydraulic telescopic rod, 56-Limiting frame, 57-Second motor, 58-Rack and pinion, 6-Smoke exhaust shell, 7-Fire extinguisher, 71-Water outlet pipe. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the directional terms such as up, down, left, right, front, back, inside, and outside used in this text are based solely on the accompanying drawings and are not intended to specifically limit the invention.

[0034] Existing testing devices for batteries in extreme environments have two chambers: a cooling chamber and a heating chamber. The testing is achieved by repeatedly moving the battery between these chambers. However, due to the uncertainty of the battery's condition, the battery may catch fire during movement, causing injury or danger to the personnel. Therefore, this invention improves upon this by implementing the following steps:

[0035] Example 1: A testing device for the research and development of polyanion sodium-ion batteries, such as... Figures 1-6 As shown, the device includes a mounting shell 1. The mounting shell 1 has three internal layers: upper, middle, and lower. From left to right, the middle layer of the mounting shell 1 contains a first cavity, a second cavity, and a third cavity. A first door 11 is hinged to the second cavity in the middle layer of the mounting shell 1 to seal it. Both the first and third cavities in the middle layer of the mounting shell 1 are hinged to second doors 12. A heater 13 is located on the upper layer of the mounting shell 1, near the first cavity, to heat the first cavity. A heater 13 is located on the upper layer of the mounting shell 1, near the third cavity. A cooler 14 is installed above the mounting shell 1 to cool the third cavity in the middle layer. Symmetrically distributed holes are formed between the first and second cavities in the middle layer of the mounting shell 1, and symmetrically distributed holes are also formed between the second and third cavities in the middle layer of the mounting shell 1. Four rectangular sliding doors 15 are slidably connected to the mounting shell 1, sealing and engaging with adjacent holes on the mounting shell 1. The sliding doors 15 are used to block adjacent holes on the mounting shell 1. Four rectangularly distributed electric telescopic rods 16 are fixed to the upper side of the mounting shell 1. The extension of the electric telescopic rods 16... The constricted end passes through the mounting shell 1 and is fixedly connected to the adjacent sliding door 15. Limiting strips are provided in all three cavities of the middle layer of the mounting shell 1. Two centrally symmetrically distributed sliding shells 17 are slidably connected to the limiting strips in the middle layer of the mounting shell 1. Initially, the two sliding shells 17 are located at the front of the first cavity and the rear of the third cavity, respectively. Four rectangularly distributed first motors 18 and several guide wheels are fixedly connected to the mounting shell 1. Two of the four first motors 18 are on the right side of the middle of the mounting shell 1, and the other two are on the left side of the middle of the mounting shell 1. A first motor 18 is wound around the output shaft of the first motor 18 and the adjacent guide wheel. A first transmission chain 19 is provided, and a guide wheel is used to support and guide the first transmission chain 19. The first transmission chain 19 is composed of a steel wire rope and cylindrical blocks evenly distributed on it. The lower side of the sliding shell 17 is provided with a groove that drives the adjacent first transmission chain 19. The first transmission chain 19 drives the adjacent sliding shell 17. When the first transmission chain 19 rotates, the cylinder on the first transmission chain 19 contacts the groove on the lower side of the adjacent sliding shell 17. The cylinder on the first transmission chain 19 drives the adjacent sliding shell 17 to move. A transmission component for driving the battery is provided in the second cavity of the middle layer of the mounting shell 1.

[0036] like Figures 7-9 As shown, the transmission assembly includes two symmetrically distributed first support plates 2, which are disposed in the second cavity of the middle layer of the mounting shell 1. Two symmetrically distributed power components 21 and multiple guide wheels are fixedly connected to the lower layer of the mounting shell 1. Each power component 21 consists of an electric roller and a tensioning wheel. A symmetrically distributed second transmission chain 22 is installed in the middle layer of the mounting shell 1. The electric rollers in the power components 21 drive the second transmission chain 22 to rotate. The second transmission chain 22 passes around an adjacent first support plate 2, an adjacent guide wheel, an electric roller in an adjacent power component 21, and a tensioning wheel therein. Two symmetrically distributed fixed shafts 23 are fixedly connected to the second cavity of the middle layer of the mounting shell 1. The fixed shafts 23 are connected to external electrical appliances via wires. A rotating shaft 24 is rotatably connected to each fixed shaft 23. The fixed shafts 23 are electrically connected to the adjacent rotating shafts 24. The rotating shafts 24 are fixedly connected to the adjacent first support plates 2. Limiting strips are fixedly attached to the first support plates 2. A first conductive plate 25 is fixedly attached to the limiting strip of the support plate 2. Two first conductive plates 25 are symmetrically distributed front and back on one first support plate 2. The first conductive plates 25 are made of metal. The rotating shaft 24 is electrically connected to the first conductive plates 25 symmetrically distributed on the adjacent first support plates 2. The sliding shell 17 is slidably connected to symmetrically distributed second conductive plates 26. The second conductive plates 26 are made of magnets. The limiting strips on the mounting shell 1 and the first support plate 2 are not conductive. The second conductive plates 26 are in contact with the adjacent first conductive plates 25. When the second conductive plates 26 move to contact the adjacent first conductive plates 25, the second conductive plates 26 are attracted to the adjacent first conductive plates 25, connecting the second conductive plates 26 and the adjacent first conductive plates 25. The sliding shell 17 is fixedly attached to two wires 27 symmetrically distributed left and right. The wires 27 are electrically connected to the adjacent second conductive plates 26. The upper end of the wires 27 is fixedly attached to a clamp 28, which is made of conductive material.

[0037] When testing the battery using this device, first open the two second switch doors 12 on the left and right (initially, the two sliding shells 17 are located at the front of the first cavity and the rear of the third cavity in the middle of the mounting shell 1, respectively). Place the two batteries into the two sliding shells 17 respectively, and then close the two second switch doors 12. After closing the two second switch doors 12, start the heater 13 and the cooler 14. The heater 13 and the cooler 14 heat the first cavity in the middle layer of the mounting shell 1 and cool the third cavity, thereby simulating the battery's condition under extreme conditions.

[0038] After the battery has been placed in an extreme environment for a period of time, the staff activates the two front-side first motors 18 and the two front-side electric telescopic rods 16. The telescopic ends of the two front-side electric telescopic rods 16 drive the two front-side sliding doors 15 to move upward, opening the two holes on the front side of the middle layer of the mounting shell 1. The two left and right first motors 18 drive the two left and right first transmission chains 19 to rotate clockwise. Through the evenly distributed cylinders on the first transmission chains 19, the front-side sliding shell 17 is moved. The left front-side first transmission chain 19 first drives the front-side sliding shell 17 to move to the right (the initial position of the front-side sliding shell 17 is...). (From the left side of mounting shell 1), the front sliding shell 17 gradually enters the middle of the middle layer of mounting shell 1. Then, the power component 21 on the front side of the middle is activated. The electric roller in the power component 21 drives the second transmission chain 22 on the front side to rotate. The second transmission chain 22 drives the front sliding shell 17 to continue to move to the right. Driven by the second transmission chain 22, the sliding shell 17 gradually enters the cooling environment on the right side. Then, the first transmission chain 19 on the right side drives the sliding shell 17 to completely enter the cooling environment on the right side, simulating the battery moving directly from a high temperature environment to a cold environment, thereby observing the state of the battery and testing the battery.

[0039] After the battery on the left is moved to the right, the staff controls the telescopic ends of the two electric telescopic rods 16 on the front to descend. The telescopic ends of the electric telescopic rods 16 on the front drive the adjacent sliding door 15 to move downward, isolating the three cavities in the middle of the mounting shell 1, and insulating the left and right cavities in the middle layer of the mounting shell 1. Then the two first motors 18 on the front are turned off.

[0040] After the front battery is moved from left to right, the operator moves the battery located at the rear of the mounting housing 1 from right to left in the same manner. After a period of time, the first motor 18 and the power unit 21 are started in reverse to repeat the above process, moving the battery. Then the first motor 18 and the power unit 21 are turned off, and the battery is moved back and forth between high temperature and cold environment. During the battery testing process, the operator does not need to move the battery, which improves the safety of the operator.

[0041] When placing the battery into the sliding shell 17, the operator clamps the two clamps 28 on the upper part of the sliding shell 17 onto the positive and negative terminals of the battery, respectively. As the sliding shell 17 and the battery on it move to the middle of the middle layer, the two second conductive plates 26 on the sliding shell 17 gradually come into contact with the adjacent first conductive plate 25. Under the action of magnetic force, the second conductive plates 26 adhere to the adjacent first conductive plates 25 to prevent poor contact. If it is necessary to test the battery's performance after testing in extreme environments, the second conductive plates 26 stop after adhering to the adjacent first conductive plates 25, and the operator can directly charge or discharge the battery to test its status. This is convenient and quick, and the entire process does not require the operator to open the switch door, further protecting the operator's safety.

[0042] If the above process is used for a discharge test, taking a sliding shell 17 as an example, the battery's power is transmitted through two clamps 28, two wires 27, two first conductive plates 25, two second conductive plates 26, two rotating shafts 24 and two fixed shafts 23, and then connected to an external electrical appliance through the wires on the fixed shafts 23, thereby discharging the battery.

[0043] Example 2: Based on Example 1, such as Figure 8 and Figure 9 As shown, it also includes two pull ropes 3 symmetrically distributed front and back. One end of the symmetrically distributed pull ropes 3 is fixed to the adjacent first support plate 2. The middle layer of the mounting shell 1 is provided with two electric rotating shafts 31 symmetrically distributed front and back. The other end of the pull rope 3 passes through the mounting shell 1 and is wound around the adjacent electric rotating shaft 31. Initially, the rotating shaft 24 and the adjacent pull rope 3 jointly support the adjacent first support plate 2, so that the first support plate 2 is in a horizontal state, and the first support plate 2 is rotatably connected to the mounting shell 1.

[0044] like Figures 10-14 As shown, two third switch doors 4 are hinged to the middle of the lower layer of the mounting shell 1, symmetrically distributed front and back. Two fixed plates 41 are fixed to the middle of the lower layer of the mounting shell 1, symmetrically distributed front and back. A first limiting plate 42 and a second limiting plate 43 are rotatably connected within the fixed plates 41. Torsion springs are provided between the first limiting plate 42 and the second limiting plate 43 and the adjacent fixed plates 41. Initially, the first limiting plate 42 and the second limiting plate 43 are in a horizontal state under the action of the torsion springs. Under the limitation of the adjacent fixed plates 41, the first limiting plate 42 and the second limiting plate 43 can only rotate downward from the horizontal state and cannot rotate upward. A sealing plate 44 is slidably connected to the left side of the fixed plates 41. The sealing plate 44 is slidably connected to the mounting shell 1. A tension spring 45 is fixed between the sealing plate 44 and the mounting shell 1. The tension spring 45 is used to drive the adjacent sealing plate 44 to move to the right. A symmetrically distributed control mechanism is provided in the middle of the lower layer of the mounting shell 1. The control mechanism is used to control the release of the adjacent sealing plates 44.

[0045] like Figures 11-15As shown, the control mechanism includes a fixed housing 5, which is fixedly connected to the bottom of the mounting housing 1. A sliding plate 51 is slidably connected inside the fixed housing 5. A second support plate 52 is fixedly connected to the upper side of the sliding plate 51 via a round rod. The second support plate 52 has holes for venting gases generated during battery combustion. A spring 53 is fixedly connected between the second support plate 52 and the mounting housing 1. A first hydraulic telescopic rod 54 is fixedly connected to the middle of the lower side of the mounting housing 1. The telescopic end of the first hydraulic telescopic rod 54 is fixedly connected to the adjacent second support plate 52. A second hydraulic telescopic rod 55 is fixedly connected to the first hydraulic telescopic rod 55. A limit frame 56 is fixedly connected to the telescopic end of the second hydraulic telescopic rod 55. The limit frame 56 is in a limiting fit with the adjacent sealing plate 44. The sealing plate 44 has a hole that fits with the adjacent limit frame 56. Initially, the upper end of the limit frame 56 is located in the hole of the adjacent sealing plate 44, limiting the sealing plate 44. When the limit frame 56 is disengaged from the adjacent sealing plate 44, the limit frame 56 releases the limiting of the adjacent sealing plate 44. The second hydraulic telescopic rod 55 is connected to the adjacent first hydraulic telescopic rod 54 through a pipe.

[0046] like Figure 5 and Figure 12 As shown, two second motors 57 are symmetrically distributed front and back on the lower layer of the mounting shell 1. The output shaft of the second motor 57 is fixed with a gear, and the sealing plate 44 is fixed with a rack 58 that meshes with the gear on the output shaft of the adjacent second motor 57.

[0047] like Figure 10 and Figure 14 As shown, two fixed shells 5, symmetrically distributed front and back, are fixedly connected to and connected to a smoke exhaust shell 6. The smoke exhaust shell 6 is used to exhaust the smoke generated by the battery combustion. Two fire extinguishing canisters 7, symmetrically distributed front and back, are fixedly connected to the lower right side of the mounting shell 1. The fire extinguishing canister 7 is equipped with a nozzle, and an electric valve is installed inside the nozzle. The fire extinguishing canister 7 is filled with high-pressure dry powder. The nozzle of the fire extinguishing canister 7 is located between the adjacent fixed plate 41 and the adjacent second support plate 52 inside the mounting shell 1.

[0048] Because extreme environmental testing can severely damage batteries, their safety cannot be guaranteed. Batteries are highly susceptible to catching fire during charging and discharging. To ensure the safety of personnel and the device in case of a battery fire, the burning battery is isolated by moving it to the lower layer of the mounting housing 1. The specific operation is as follows: When the battery catches fire, taking the front battery as an example (at this time, the battery is located in the middle of the middle layer of the mounting housing 1), the operator activates the front electric rotating shaft 31. The electric rotating shaft 31 releases the pull rope 3. After the pull rope 3 is released, the front first support plate 2 is supported only by the rotating shaft and the fixed shaft 23 and the rotating shaft 24. The first support plate 2 rotates because it cannot form a stable support. The first support plate 2 drives the sliding housing 17 to rotate, and the sliding housing 17 rotates downwards. During the 180-degree rotation of the first support plate 2, the battery on the sliding housing 17 slides downwards under the action of gravity. During the sliding process, the clamp 28 disengages from the battery under the pull, disconnecting the external electrical appliance from the battery.

[0049] During the rotation of the first support plate 2, the adjacent second transmission chain 22 is twisted. At this time, part of the second transmission chain 22 is released through the tension wheel in the adjacent power component 21, so that the first support plate 2 can rotate normally and the second transmission chain 22 can continue to be used after the first support plate 2 is reset.

[0050] During the fall, the battery comes into contact with the first limiting plate 42 and the second limiting plate 43 below it and presses the first limiting plate 42 and the second limiting plate 43 downward. The first limiting plate 42 and the second limiting plate 43 rotate downward, and the torsion springs on the first limiting plate 42 and the second limiting plate 43 store force, causing the battery to fall onto the second support plate 52. After the battery falls onto the second support plate 52 and separates from the first limiting plate 42 and the second limiting plate 43, the first limiting plate 42 and the second limiting plate 43 reset under the action of the torsion springs.

[0051] After the battery falls onto the second support plate 52, it presses down on the second support plate 52. The second support plate 52 causes the sliding plate 51 to descend. The sliding plate 51 is located below the opening between the exhaust shell 6 and the fixed shell 5. The second support plate 52 compresses the spring 53 and contracts. The second support plate 52 moves downward. During the downward movement of the second support plate 52, the second support plate 52 compresses the telescopic end of the first hydraulic telescopic rod 54 and moves it downward. The telescopic end of the first hydraulic telescopic rod 54 compresses the liquid inside it downward. The liquid inside the first hydraulic telescopic rod 54 enters the adjacent second hydraulic telescopic rod 55 through the conduit. The telescopic end of the second hydraulic telescopic rod 55 extends and drives the adjacent limiting frame 56 to move downward, so that the limiting frame 56 gradually separates from the adjacent sealing plate 44.

[0052] After the limiting bracket 56 disengages from the sealing plate 44 (initially the tension spring 45 is charged), the tension spring 45 is released, and the tension spring 45 drives the adjacent sealing plate 44 to move to the right. The right end of the sealing plate 44 enters the fixed plate 41 to seal the cavity below the sealing plate 44. If the battery continues to burn at this time, the combustion smoke enters the exhaust shell 6 through the fixed shell 5 and is discharged from the exhaust shell 6 to prevent the staff from inhaling smoke and dust and protect the health of the staff. Then, the electric valve at the nozzle of the fire extinguisher 7 is activated, and the fire extinguisher 7 sprays dry powder to extinguish the burning battery. After the battery is extinguished, the staff opens the third switch door 4 on the front to take out the damaged battery.

[0053] After the battery burns, moving the battery into a separate, sealed cavity prevents the battery from injuring personnel and damaging the device, and extinguishes the battery promptly, thus improving the safety of the device.

[0054] After the battery is turned off, the staff starts the electric rotating shaft 31, which tightens the pull rope 3 again. The pull rope 3 pulls the adjacent first support plate 2, resetting the first support plate 2. Then, the first support plate 2 is supported by the rotating shaft and the pull rope 3. Then, the second motor 57 on the front side is started. The gear on the output shaft of the second motor 57 drives the rack 58 to move to the left. The rack 58 drives the sealing plate 44, resetting the sealing plate 44. Since the damaged battery has been removed at this time, the second support plate 52 is reset under the action of the spring 53, and drives the extension end of the first hydraulic telescopic rod 54 to reset. Through the transmission of fluid, the extension end of the second hydraulic telescopic rod 55 drives the limit frame 56 to rise. The limit frame 56 gradually enters the groove of the sealing plate 44, limiting the sealing plate 44. Then, all electrical appliances are turned off, and the test is completed.

[0055] The above are merely embodiments of the present invention and are not intended to limit the invention. All equivalent substitutions made within the principles of the present invention should be included within the scope of protection of the present invention. Contents not described in detail in this invention are existing technologies known to those skilled in the art.

Claims

1. A testing device for the research and development of polyanion-type sodium-ion batteries, characterized in that, The device includes a mounting shell (1), which has three layers: upper, middle, and lower. The middle layer of the mounting shell (1) has a first cavity, a second cavity, and a third cavity arranged in sequence. A first switch door (11) is hinged to the second cavity of the middle layer of the mounting shell (1). Both the first and third cavities of the middle layer of the mounting shell (1) are hinged to second switch doors (12). A heater (13) is located near the first cavity on the upper layer of the mounting shell (1), and a cooler (14) is located near the third cavity on the upper layer of the mounting shell (1). Symmetrically distributed holes are provided between the first and second cavities and between the second and third cavities in the middle layer of the mounting shell (1). The mounting shell (1) is slidably connected to a rectangularly distributed sliding door (15). The sliding door (15) is connected to the mounting shell... The adjacent holes on the housing (1) are sealed together. A rectangular electric telescopic rod (16) is fixedly connected to the upper side of the housing (1). The telescopic end of the electric telescopic rod (16) passes through the housing (1) and is fixedly connected to the adjacent sliding door (15). Limiting strips are provided in the three cavities of the middle layer of the housing (1). A centrally symmetrically distributed sliding shell (17) is slidably connected to the limiting strip of the middle layer of the housing (1). A rectangularly distributed first motor (18) and several guide wheels are fixedly connected to the housing (1). A first transmission chain (19) is wound between the output shaft of the first motor (18) and the adjacent guide wheel. The first transmission chain (19) is in transmission cooperation with the adjacent sliding shell (17). A transmission component for transmitting the battery is provided in the second cavity of the middle layer of the housing (1). The first transmission chain (19) is composed of a steel wire rope and cylindrical blocks evenly distributed thereon. The lower side of the sliding shell (17) is provided with a groove that is in transmission cooperation with the adjacent first transmission chain (19). The transmission assembly includes symmetrically distributed first support plates (2), which are disposed in the second cavity of the middle layer of the mounting shell (1). The lower layer of the mounting shell (1) is fixed with symmetrically distributed power components (21) and guide wheels. The power components (21) consist of electric rollers and tension wheels. The middle layer of the mounting shell (1) is equipped with symmetrically distributed second transmission chains (22). The second transmission chains (22) bypass adjacent first support plates (2), adjacent guide wheels, electric rollers within adjacent power components (21), and tension wheels within them. The middle layer of the mounting shell (1) has symmetrically distributed second transmission chains (22). Two cavities are fixedly connected to symmetrically distributed fixed shafts (23). The fixed shafts (23) are connected to external electrical appliances via wires. The fixed shafts (23) are rotatably connected to rotating shafts (24). The fixed shafts (23) are electrically connected to the adjacent rotating shafts (24). The rotating shafts (24) are fixedly connected to the adjacent first support plate (2). The first support plate (2) is fixedly connected to a limit strip. The first conductive plate (25) is fixedly connected to the limit strip of the first support plate (2). The rotating shaft (24) is electrically connected to the first conductive plates (25) symmetrically distributed on the adjacent first support plate (2). The sliding shell (17) is slidably connected to a symmetrically distributed second conductive plate (26), the second conductive plate (26) is in contact with the adjacent first conductive plate (25), the sliding shell (17) is fixedly connected to a symmetrically distributed wire (27), the wire (27) is electrically connected to the adjacent second conductive plate (26), and a clamp (28) is fixedly connected to one end of the wire (27) away from the sliding shell (17).

2. The testing device for the research and development of polyanion sodium-ion batteries according to claim 1, characterized in that, The second conductive plate (26) is made of magnet, the first conductive plate (25) is made of metal, and the clamp (28) is made of conductive material.

3. The testing device for the research and development of polyanion sodium-ion batteries according to claim 2, characterized in that, It also includes symmetrically distributed pull ropes (3), one end of each symmetrically distributed pull rope (3) is fixed to the adjacent first support plate (2), the mounting shell (1) is provided with symmetrically distributed electric rotating shafts (31), the other end of each pull rope (3) passes through the mounting shell (1) and is wound around the adjacent electric rotating shaft (31), and the first support plate (2) is rotatably connected to the mounting shell (1).

4. The testing device for the research and development of polyanion sodium-ion batteries according to claim 3, characterized in that, The lower part of the mounting shell (1) is hinged with a symmetrically distributed third switch door (4). The lower part of the mounting shell (1) is fixed with a symmetrically distributed fixing plate (41). The fixing plate (41) is rotatably connected with a first limiting plate (42) and a second limiting plate (43). The first limiting plate (42) and the second limiting plate (43) are provided with torsion springs between them and the adjacent fixing plate (41). The fixing plate (41) is slidably connected with a sealing plate (44). The sealing plate (44) is slidably connected with the mounting shell (1). The sealing plate (44) is fixed with a tension spring (45) between it and the mounting shell (1). The lower part of the mounting shell (1) is provided with a symmetrically distributed control mechanism. The control mechanism is used to control the release of the adjacent sealing plate (44).

5. The testing device for the research and development of polyanion sodium-ion batteries according to claim 4, characterized in that, The control mechanism includes a fixed shell (5), which is fixed to the bottom of the mounting shell (1). The fixed shell (5) is slidably connected to a sliding plate (51). The sliding plate (51) is fixed to a second support plate (52) via a round rod. The second support plate (52) has a hole. A spring (53) is fixed between the second support plate (52) and the mounting shell (1). A first hydraulic telescopic rod (54) is fixed to the middle of the lower side of the mounting shell (1). The telescopic end of the first hydraulic telescopic rod (54) is fixed to the adjacent second support plate (52). A second hydraulic telescopic rod (55) is fixed to the middle of the lower side of the mounting shell (1). A limit frame (56) is fixed to the telescopic end of the second hydraulic telescopic rod (55). The limit frame (56) is limited to the adjacent sealing plate (44). The second hydraulic telescopic rod (55) and the adjacent first hydraulic telescopic rod (54) are connected by a pipe.

6. The testing device for the research and development of polyanion sodium-ion batteries according to claim 5, characterized in that, The lower layer of the mounting shell (1) is fixedly connected to a symmetrically distributed second motor (57), the output shaft of the second motor (57) is fixedly connected to a gear, and the sealing plate (44) is fixedly connected to a rack (58) that meshes with the gear on the output shaft of the adjacent second motor (57).

7. The testing device for the research and development of polyanion sodium-ion batteries according to claim 6, characterized in that, The symmetrically distributed fixed shells (5) are jointly fixed and connected to the smoke exhaust shell (6). The mounting shell (1) is fixed with symmetrically distributed fire extinguishing tanks (7). The fire extinguishing tanks (7) are provided with nozzles and electric valves. The fire extinguishing tanks (7) are provided with high-pressure dry powder. The nozzles of the fire extinguishing tanks (7) are located in the mounting shell (1) between the adjacent fixed plate (41) and the adjacent second support plate (52).

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