A solid-state battery performance testing device

Abstract

The present invention discloses a performance testing device for a solid-state battery, which relates to the technical field of battery performance testing devices. A performance testing device for a solid-state battery includes a placement frame. At the bottom of the inner wall of the placement frame, a placement table is fixedly installed. A cover plate is rotatably installed on the inner wall of the placement frame. On the side of the cover plate close to the placement frame, a fire extinguishing device is fixedly installed. A clamping device is also provided on the inner wall of the placement frame; among them, the clamping device includes an electric push rod, a push plate, a clamping plate, a push rod, a sliding rod, a sliding plate, a rotating rod, and a pushing rod. The electric push rod is fixedly installed on the inner wall of the placement frame. The push plate is fixedly installed at the movable end of the electric push rod. The clamping plate is fixedly installed on the side of the push plate close to the placement table. Then, the clamping plate will fix the battery. Fixing the battery can prevent the battery from shifting during the charging detection of the battery, which may cause the power plug to fail to be inserted into the battery properly.

Description

Technical Field

[0001] The present invention relates to the technical field of battery performance testing devices, and particularly to a solid-state battery performance testing device. Background Art

[0002] Due to the structural advantages of solid-state batteries, the safety of the batteries is improved, thus enhancing the adaptability of solid-state batteries to numerous usage scenarios and expanding the application scope of the batteries.

[0003] The patent with the patent announcement number CN217768496U relates to the technical field of battery performance testing devices, and includes: a frame, a sealing assembly, a positive electrode, a positive pressure sensor, a negative electrode, and a negative pressure sensor. Both ends of the sealing assembly are provided with positive and negative connection holes. Before testing, the solid-state battery to be tested needs to be placed inside the sealing assembly, and the solid-state battery to be tested is located between the positive electrode and the negative electrode. The positive and negative pressure sensors are in indirect or direct contact with the positive and negative electrodes. After assembly, the data measured by the positive pressure sensor and the negative pressure sensor are initial values. During the charge and discharge process of the solid-state battery to be tested, the positive pressure sensor can detect the stress change of the positive electrode material of the solid-state battery to be tested, and the negative pressure sensor can detect the stress change of the negative electrode material of the solid-state battery to be tested. By detecting the stress changes of the positive and negative electrode materials of the solid-state battery during charge and discharge, it is beneficial to improve the safety of the solid-state battery.

[0004] The above patent is beneficial to improving the safety of solid-state batteries by detecting the stress changes of the positive and negative electrode materials of the solid-state battery during charge and discharge. However, during the charging detection of the battery, the battery may shift, causing the plug to be unable to accurately insert into the charging socket of the battery. The shift may cause the position of the battery in the testing device to change, thereby affecting the measurement accuracy. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a solid-state battery performance testing device, which solves the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A solid-state battery performance testing device includes a placement frame. A placement table is fixedly installed at the bottom of the inner wall of the placement frame. A cover plate is rotatably installed on the inner wall of the placement frame. A fire extinguishing device is fixedly installed on the side of the cover plate close to the placement frame. A clamping device is also provided on the inner wall of the placement frame.

[0007] Among them, the clamping device includes an electric push rod, a push plate, a clamping plate, a push rod, a sliding rod, a sliding plate, a rotating rod and a pushing rod. The electric push rod is fixedly installed on the inner wall of the placement frame. The push plate is fixedly installed at the movable end of the electric push rod. The clamping plate is fixedly installed on the side of the push plate close to the placement table. The push rod is fixedly installed at the bottom of the push plate. The sliding rod is slidably installed on the bottom of the inner wall of the placement frame. The sliding plate is slidably installed on the bottom of the inner wall of the placement frame. The pushing rod is fixedly installed on the top of the sliding plate. One end of the rotating rod is rotatably installed on the top of the sliding plate, and the other end of the rotating rod is rotatably installed on the side of the sliding rod close to the sliding plate. When the rotating rod rotates, it will push the sliding plate to slide. When the sliding plate slides, it will drive the pushing rod to move towards the battery to align the battery, avoiding that the charging port of the battery is not aligned with the power cord during the charging detection of the battery, which may cause the power plug to not be inserted into the battery well.

[0008] According to the above technical solution, a first spring is provided between the push plate and the clamping plate. The first spring is provided to avoid clamping the battery when clamping the battery. The clamping plate will move towards the push plate to store energy in the first spring. A second spring is provided between the sliding rod and the placement frame. The second spring is provided to drive the sliding rod back to its original position. A third spring is provided between the pushing rod and the placement frame. The third torsion spring is provided to drive the pushing rod back to its original position.

[0009] According to the above technical solution, a wire insertion device and a protection device are further provided on the inner wall of the placement frame. The wire insertion device includes a first hydraulic cylinder, a first hydraulic rod, a second hydraulic rod, a second hydraulic cylinder, a square plate, a clamping plate, a rotating pin and a clamping cylinder. The first hydraulic cylinder is fixedly installed on the side of the push plate close to the clamping plate. One end of the first hydraulic rod is slidably installed inside the first hydraulic cylinder, and the other end of the first hydraulic rod is fixedly installed on the side of the clamping plate close to the push plate. The second hydraulic cylinder is fixedly installed on the inner wall of the placement frame. One end of the second hydraulic rod is slidably installed inside the second hydraulic cylinder. The square plate is fixedly installed at the other end of the second hydraulic rod. The clamping plate is slidably installed on the side of the square plate close to the placement table. The rotating pin is rotatably installed on the side of the clamping plate close to the placement table. The clamping cylinder is slidably installed on the side of the square plate away from the placement table. When the plug does not match the battery model to be charged, rotate the rotating pin to release the limit on the clamping plate, slide the clamping plate to release the clamping of the plug, then take out the plug and replace it with a plug of a matching model, quickly replace the plug, which can effectively improve the replacement speed of the plug by the staff and can effectively improve the work efficiency of the staff.

[0010] According to the above technical solution, a fourth spring is provided between the clamping plate and the square plate. The fourth spring is provided to drive the clamping plate back to its original position. The clamping cylinder is fixedly installed with the clamping plate. A hose is provided between the second hydraulic cylinder and the first hydraulic cylinder.

[0011] According to the above technical solution, a square groove is provided on one side of the square plate close to the rotating pin, the rotating pin is in contact with the inner wall of the square groove, a first torsion spring is provided between the cover plate and the placement frame, and the first torsion spring is provided to drive the cover plate to close. A second torsion spring is provided between the rotating pin and the clamping plate, and the second torsion spring is provided to drive the rotating pin back to its original position.

[0012] According to the above technical solution, the protection device includes a telescopic rod, a sliding groove, a fixed block and a sliding plate. The sliding groove is fixedly installed on the inner wall of the placement frame, the sliding plate is slidably installed on the inner wall of the sliding groove, one end of the telescopic rod is rotatably installed on the top of the square plate, and the other end of the telescopic rod is rotatably installed on the bottom of the sliding plate. The fixed block is fixedly installed on one side of the cover plate close to the sliding groove. When the telescopic rod moves, it will pull the sliding plate to slide downward. When the sliding plate slides, it will lose contact with the fixed block, so the limit of the cover plate will be released, and the cover plate will be driven by the first torsion spring to rotate to seal the placement frame. When the cover plate rotates, it will drive the fire extinguishing device to move, avoiding that when the battery is charged and detected, due to the aging of the battery itself, the battery catches fire and affects the outside. At this time, the cover plate can effectively block the spread of the fire.

[0013] According to the above technical solution, the protection device further includes a square block, a plug pin, a fixed key and a sliding pressure plate. The square block is fixedly installed on one side of the cover plate away from the sliding groove, the plug pin is slidably installed in the inner wall of the square block, the fixed key is slidably installed on one side of the cover plate away from the sliding groove, and the sliding pressure plate is slidably installed on the top of the placement frame. When the fixed key slides, the plug pin will contact the inner wall of the sliding groove to limit the fixed key, avoiding that when the battery is detected, a staff member takes it out, so that the battery is not fully detected. At the same time, it also avoids being opened when the fire of the battery has not been completely extinguished, promoting the spread of the fire.

[0014] A fifth spring is provided between the plug pin and the square block, and the fifth spring is provided to drive the plug pin back to its original position. A sixth spring is provided between the sliding pressure plate and the placement frame, and the sixth spring is provided to drive the sliding pressure plate back to its original position. A seventh spring is provided between the fixed key and the cover plate, and the seventh spring is provided to drive the fixed key back to its original position. A limiting groove is provided on one side of the fixed key close to the plug pin, the shape of the limiting groove matches that of the plug pin. A sliding groove is provided on one side of the sliding pressure plate close to the fixed key, and the shape of the sliding groove matches that of the fixed key. A sliding groove is provided on one side of the fixed block close to the sliding plate, and the sliding plate is in contact with the inner wall of the sliding groove.

[0015] The present invention provides a solid-state battery performance testing device. It has the following beneficial effects:

[0016] (1) In this invention, when the electric push rod extends, it will push the push plate to move towards the placement table. The movement of the push plate will push the clamping plate to move towards the placement table, and then the clamping plate will fix the battery. Fixing the battery can prevent the battery from shifting during the charging and detection process, which may cause the power plug to fail to be inserted properly into the battery. The shift may cause the position of the battery in the testing device to change, thereby affecting the measurement accuracy. When the sliding rod slides, it will push the rotating rod to rotate. The rotation of the rotating rod will push the sliding plate to slide, and the sliding of the sliding plate will drive the pushing rod to move towards the battery to align the battery, preventing the charging port of the battery from not being aligned with the power cord during the charging and detection of the battery, which may cause the power plug to fail to be inserted properly into the battery.

[0017] (2) In this invention, the second hydraulic rod will push the square plate to move. The movement of the square plate will drive the power cord plug to move, insert the plug into the battery to charge the battery, which can effectively ensure that the battery is detected only after it is fixed, avoiding the situation where the battery shifts when the plug is inserted into the battery, resulting in the power plug not being inserted properly into the battery. When the plug does not match the battery model to be charged, rotate the rotating pin to release the limit on the clamping plate, slide the clamping plate to release the clamping of the plug, then take out the plug and replace it with a plug that meets the model, quickly replacing the plug, which can effectively improve the speed of the staff to replace the plug and effectively improve the work efficiency of the staff.

[0018] (3) In this invention, when the telescopic rod moves, it will pull the sliding plate to slide downward. When the sliding plate slides, it will lose contact with the fixed block, then the limit of the cover plate will be released, and the cover plate will be driven by the first torsion spring to rotate to seal the placement frame. When the cover plate rotates, it will drive the fire extinguishing device to move, preventing the battery from catching fire due to its own aging and affecting the outside during the charging and detection of the battery. At this time, the cover plate can effectively block the spread of the fire, and the fire extinguishing device will release carbon dioxide to extinguish the fire when it detects high temperature. When the fixed key slides, the pin will contact the inner wall of the sliding groove to limit the fixed key, preventing a staff member from taking out the battery during the detection of the battery, resulting in incomplete detection of the battery, and also preventing the battery from being opened when the fire has not been completely extinguished in case of battery fire, promoting the spread of the fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the position structure of the clamping plate and the push rod of the present invention;

[0021] Figure 3 It is a schematic diagram of the position structure of the sliding plate and the pushing rod of the present invention;

[0022] Figure 4Schematic diagram of the position structure of the first hydraulic rod and the first hydraulic cylinder of the present invention;

[0023] Figure 5 Schematic diagram of the position structure of the second hydraulic cylinder and the second hydraulic rod of the present invention;

[0024] Figure 6 Schematic diagram of the position structure of the fixed block and the sliding plate of the present invention;

[0025] Figure 7 Schematic diagram of the position structure of the bolt and the square block of the present invention.

[0026] In the figure: 1. Placing frame; 2. Placing table; 3. Cover plate; 4. Fire extinguishing device; 5. Electric push rod; 6. Push plate; 7. Clamping plate; 8. Push rod; 9. Sliding rod; 10. Sliding plate; 11. Rotating rod; 12. Pushing rod; 131. First hydraulic cylinder; 132. First hydraulic rod; 133. Second hydraulic rod; 134. Second hydraulic cylinder; 135. Square plate; 136. Clamping plate; 137. Rotating pin; 138. Clamping cylinder; 141. Telescopic rod; 142. Sliding groove; 143. Fixed block; 144. Sliding plate; 145. Square block; 146. Bolt; 147. Fixed key; 148. Sliding pressure plate. Detailed implementation manner

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figures 1 - 7 , an embodiment of the present invention is: A solid-state battery performance testing device, including a placing frame 1, a placing table 2 is fixedly installed at the bottom of the inner wall of the placing frame 1, a cover plate 3 is rotatably installed on the inner wall of the placing frame 1, a fire extinguishing device 4 is fixedly installed on one side of the cover plate 3 close to the placing frame 1, and a clamping device is further provided on the inner wall of the placing frame 1;

[0029] Among them, the clamping device includes an electric push rod 5, a push plate 6, a clamping plate 7, a push rod 8, a sliding rod 9, a sliding plate 10, a rotating rod 11 and a pushing rod 12. The electric push rod 5 is fixedly installed on the inner wall of the placement frame 1, the push plate 6 is fixedly installed at the movable end of the electric push rod 5, the clamping plate 7 is fixedly installed on one side of the push plate 6 close to the placement table 2, the push rod 8 is fixedly installed at the bottom of the push plate 6, the sliding rod 9 is slidably installed on the bottom inner wall of the placement frame 1, the sliding plate 10 is slidably installed on the bottom inner wall of the placement frame 1, the pushing rod 12 is fixedly installed on the top of the sliding plate 10, one end of the rotating rod 11 is rotatably installed on the top of the sliding plate 10, and the other end of the rotating rod 11 is rotatably installed on one side of the sliding rod 9 close to the sliding plate 10. The rotation of the rotating rod 11 will push the sliding plate 10 to slide, and the sliding of the sliding plate 10 will drive the pushing rod 12 to move towards the battery to straighten the battery, so as to avoid that the charging port of the battery is not aligned with the power cord during the charging detection of the battery, which may cause the power plug to be unable to be inserted into the battery well.

[0030] A first spring is provided between the push plate 6 and the clamping plate 7. The first spring is provided to avoid pinching the battery when clamping the battery. The clamping plate 7 will move towards the push plate 6 to store energy in the first spring. A second spring is provided between the sliding rod 9 and the placement frame 1. The second spring is provided to drive the sliding rod 9 back to its original position. A third spring is provided between the pushing rod 12 and the placement frame 1. The third torsion spring is provided to drive the pushing rod 12 back to its original position.

[0031] When this embodiment works: when it is necessary to perform charge and discharge cycle detection on the solid-state battery, the battery is placed inside the placement frame 1, and then the battery is placed on the surface of the placement table 2 and the electric push rod 5 is started. When the electric push rod 5 is started, the movable end of the electric push rod 5 will extend towards the placement table 2. The extension of the electric push rod 5 will push the push plate 6 to move towards the placement table 2. The movement of the push plate 6 will push the clamping plate 7 to move towards the placement table 2, and then the clamping plate 7 will fix the battery. When the push plate 6 moves, it will drive the push rod 8 to move towards the placement table 2. The movement of the push rod 8 will contact the sliding rod 9, and then the push rod 8 will push the sliding rod 9 to slide. The sliding of the sliding rod 9 will push the rotating rod 11 to rotate. The rotation of the rotating rod 11 will push the sliding plate 10 to slide. The sliding of the sliding plate 10 will drive the pushing rod 12 to move towards the battery to straighten the battery.

[0032] Please refer to Figures 1 - 7, on the basis of the above embodiments, in another embodiment of the present invention, a wire inserting device and a protection device are further provided on the inner wall of the placement frame 1. The wire inserting device includes a first hydraulic cylinder 131, a first hydraulic rod 132, a second hydraulic rod 133, a second hydraulic cylinder 134, a square plate 135, a clamping plate 136, a rotating pin 137, and a clamping cylinder 138. The first hydraulic cylinder 131 is fixedly installed on the side of the push plate 6 close to the clamping plate 7. One end of the first hydraulic rod 132 is slidably installed inside the first hydraulic cylinder 131, and the other end of the first hydraulic rod 132 is fixedly installed on the side of the clamping plate 7 close to the push plate 6. The second hydraulic cylinder 134 is fixedly installed on the inner wall of the placement frame 1. One end of the second hydraulic rod 133 is slidably installed inside the second hydraulic cylinder 134. The square plate 135 is fixedly installed at the other end of the second hydraulic rod 133. The clamping plate 136 is slidably installed on the side of the square plate 135 close to the placement table 2. The rotating pin 137 is rotatably installed on the side of the clamping plate 136 close to the placement table 2. The clamping cylinder 138 is slidably installed on the side of the square plate 135 away from the placement table 2. When the plug does not match the battery model to be charged, rotate the rotating pin 137 to release the limit on the clamping plate 136, and slide the clamping plate 136 to release the clamping of the plug, then take out the plug and replace it with a plug of a matching model, quickly replacing the plug, which can effectively improve the replacement speed of the plug by the staff and can effectively improve the work efficiency of the staff.

[0033] A fourth spring is provided between the clamping plate 136 and the square plate 135. The fourth spring is provided to drive the clamping plate 136 back to its original position. The clamping cylinder 138 is fixedly installed with the clamping plate 136. A hose is provided between the second hydraulic cylinder 134 and the first hydraulic cylinder 131.

[0034] A square groove is formed on the side of the square plate 135 close to the rotating pin 137. The rotating pin 137 contacts the inner wall of the square groove. A first torsion spring is provided between the cover plate 3 and the placement frame 1. The first torsion spring is provided to drive the cover plate 3 to close. A second torsion spring is provided between the rotating pin 137 and the clamping plate 136. The second torsion spring is provided to drive the rotating pin 137 back to its original position.

[0035] The protection device includes a telescopic rod 141, a sliding groove 142, a fixed block 143 and a sliding plate 144. The sliding groove 142 is fixedly installed on the inner wall of the placement frame 1. The sliding plate 144 is slidably installed on the inner wall of the sliding groove 142. One end of the telescopic rod 141 is rotatably installed on the top of the square plate 135, and the other end of the telescopic rod 141 is rotatably installed on the bottom of the sliding plate 144. The fixed block 143 is fixedly installed on one side of the cover plate 3 close to the sliding groove 142. When the telescopic rod 141 moves, it will pull the sliding plate 144 to slide downward. When the sliding plate 144 slides, it will lose contact with the fixed block 143, so the limit of the cover plate 3 will be released, and the cover plate 3 will be driven by the first torsion spring to rotate to seal the placement frame 1. When the cover plate 3 rotates, it will drive the fire extinguishing device 4 to move, preventing the battery from spontaneously igniting due to its own aging during the charging and detection of the battery, which may affect the outside. At this time, the cover plate 3 can effectively block the spread of the fire.

[0036] The protection device further includes a square block 145, a plug pin 146, a fixed key 147 and a sliding pressure plate 148. The square block 145 is fixedly installed on one side of the cover plate 3 away from the sliding groove 142. The plug pin 146 is slidably installed in the inner wall of the square block 145. The fixed key 147 is slidably installed on one side of the cover plate 3 away from the sliding groove 142. The sliding pressure plate 148 is slidably installed on the top of the placement frame 1. When the fixed key 147 slides, the plug pin 146 will contact the inner wall of the sliding groove to limit the fixed key 147, preventing a staff member from taking out the battery during the battery detection, so that the battery is not fully detected. At the same time, it also prevents the battery from being opened when the fire has not been completely extinguished during the battery fire, promoting the spread of the fire.

[0037] A fifth spring is provided between the plug pin 146 and the square block 145 to drive the plug pin 146 back to its original position. A sixth spring is provided between the sliding pressure plate 148 and the placement frame 1 to drive the sliding pressure plate 148 back to its original position. A seventh spring is provided between the fixed key 147 and the cover plate 3 to drive the fixed key 147 back to its original position. A limiting groove is opened on one side of the fixed key 147 close to the plug pin 146, and the shape of the limiting groove matches that of the plug pin 146. A sliding groove is opened on one side of the sliding pressure plate 148 close to the fixed key 147, and the shape of the sliding groove matches that of the fixed key 147. A sliding groove is opened on one side of the fixed block 143 close to the sliding plate 144, and the sliding plate 144 contacts the inner wall of the sliding groove.

[0038] During the operation of this embodiment: When clamping the battery, the push plate 6 will push the clamping plate 7 to clamp the battery. When the clamping plate 7 contacts the battery, the reaction force generated during the clamping of the battery will push the push plate 6, and the distance between the push plate 6 and the clamping plate 7 will become smaller. Then the clamping plate 7 will push the first hydraulic rod 132 to move into the first hydraulic cylinder 131. The first hydraulic rod 132 will push the liquid inside the first hydraulic cylinder 131 into the second hydraulic cylinder 134. The increase in the liquid inside the second hydraulic cylinder 134 will push the second hydraulic rod 133 to move away from the second hydraulic cylinder 134. The second hydraulic rod 133 will push the square plate 135 to move. The movement of the square plate 135 will drive the power cord plug to move, insert the plug into the battery to charge the battery. When the plug does not match the battery model to be charged, rotate the rotating pin 137 to release the limit on the clamping plate 136, slide the clamping plate 136 to release the clamping of the plug, then take out the plug and replace it with a plug of the appropriate model. After the plug is replaced, the clamping plate 136 will clamp the plug, and the clamping plate 136 will drive the clamping cylinder 138 to clamp and protect the power cord.

[0039] When the square plate 135 moves, it will pull the telescopic rod 141 to move. The movement of the telescopic rod 141 will pull the sliding plate 144 to slide downward. When the sliding plate 144 slides, it will lose contact with the fixed block 143, and the limit on the cover plate 3 will be released. Then the cover plate 3 will be driven by the first torsion spring to rotate to seal the placement frame 1. When the cover plate 3 closes, it will contact the sliding pressure plate 148 and push the sliding pressure plate 148 to slide away from the cover plate 3. When the cover plate 3 completely seals the placement frame 1, it will contact the sliding pressure plate 148. Then the sliding pressure plate 148 will be pulled back to its original position by the sixth spring, and the sliding pressure plate 148 will limit the cover plate 3. When the cover plate 3 completely seals the placement frame 1, it will push the fixed key 147 to slide to limit the sliding pressure plate 148. When the fixed key 147 slides, the bolt 146 will contact the inner wall of the sliding groove to limit the fixed key 147, preventing any staff from taking out the battery during the battery detection, ensuring that the battery is not fully detected.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solid-state battery performance testing device, comprising a placement frame, characterized in that: A placing platform is fixedly installed at the bottom of the inner wall of the placing frame. A cover plate is rotatably installed on the inner wall of the placing frame. A fire extinguishing device is fixedly installed on one side of the cover plate close to the placing frame. A clamping device, a wire inserting device and a protection device are also arranged on the inner wall of the placing frame; Among them, the clamping device includes an electric push rod, a push plate, a clamping plate, a push rod, a sliding rod, a sliding plate, a rotating rod and a pushing rod. The electric push rod is fixedly installed on the inner wall of the placing frame. The push plate is fixedly installed at the movable end of the electric push rod. The clamping plate is fixedly installed on one side of the push plate close to the placing platform. The push rod is fixedly installed at the bottom of the push plate. The sliding rod is slidably installed on the bottom of the inner wall of the placing frame. The sliding plate is slidably installed on the bottom of the inner wall of the placing frame. The pushing rod is fixedly installed on the top of the sliding plate. One end of the rotating rod is rotatably installed on the top of the sliding plate, and the other end of the rotating rod is rotatably installed on one side of the sliding rod close to the sliding plate; The wire inserting device includes a first hydraulic cylinder, a first hydraulic rod, a second hydraulic rod, a second hydraulic cylinder, a square plate, a clamping plate, a rotating pin and a clamping cylinder. The first hydraulic cylinder is fixedly installed on one side of the push plate close to the clamping plate. One end of the first hydraulic rod is slidably installed inside the first hydraulic cylinder, and the other end of the first hydraulic rod is fixedly installed on one side of the clamping plate close to the push plate. The second hydraulic cylinder is fixedly installed on the inner wall of the placing frame. One end of the second hydraulic rod is slidably installed inside the second hydraulic cylinder. The square plate is fixedly installed at the other end of the second hydraulic rod. The clamping plate is slidably installed on one side of the square plate close to the placing platform. The rotating pin is rotatably installed on one side of the clamping plate close to the placing platform. The clamping cylinder is slidably installed on one side of the square plate away from the placing platform; The protection device includes a telescopic rod, a sliding groove, a fixed block and a sliding plate. The sliding groove is fixedly installed on the inner wall of the placing frame. The sliding plate is slidably installed on the inner wall of the sliding groove. One end of the telescopic rod is rotatably installed on the top of the square plate, and the other end of the telescopic rod is rotatably installed on the bottom of the sliding plate. The fixed block is fixedly installed on one side of the cover plate close to the sliding groove.

2. The performance testing device for a solid-state battery according to claim 1, wherein: A first spring is arranged between the push plate and the clamping plate. A second spring is arranged between the sliding rod and the placing frame. A third spring is arranged between the pushing rod and the placing frame.

3. The performance testing device for a solid-state battery according to claim 2, wherein: A fourth spring is arranged between the clamping plate and the square plate. The clamping cylinder is fixedly installed with the clamping plate. A hose is arranged between the second hydraulic cylinder and the first hydraulic cylinder.

4. The performance testing device for a solid-state battery according to claim 3, wherein: A square groove is formed on one side of the square plate close to the rotating pin. The rotating pin is in contact with the inner wall of the square groove. A first torsion spring is arranged between the cover plate and the placing frame. A second torsion spring is arranged between the rotating pin and the clamping plate.

5. The performance testing device for a solid-state battery according to claim 4, characterized in that: The protection device further includes a square block, a plug pin, a fixed key and a sliding pressing plate. The square block is fixedly installed on one side of the cover plate away from the sliding groove. The plug pin is slidably installed inside the square block. The fixed key is slidably installed on one side of the cover plate away from the sliding groove. The sliding pressing plate is slidably installed on the top of the placing frame.

6. The performance testing device for a solid-state battery according to claim 5, wherein: A fifth spring is provided between the bolt and the square block, a sixth spring is provided between the sliding pressure plate and the placement frame, a seventh spring is provided between the fixed key and the cover plate. A limiting groove is opened on one side of the fixed key close to the bolt, and the outer shape of the limiting groove matches that of the bolt. A sliding groove is opened on one side of the sliding pressure plate close to the fixed key, and the outer shape of the sliding groove matches that of the fixed key. A sliding groove is opened on one side of the fixed block close to the sliding plate, and the sliding plate contacts the inner wall of the sliding groove.

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