Humidity test device and protection method

Abstract

The invention belongs to the technical field of test boxes, and particularly relates to a humidity test device and a protection method.The humidity test device comprises a test box and a lithium battery for testing, positive and negative electrodes are arranged on the left side of the lithium battery, a control panel is arranged on the right side of the test box, and the test box is provided with a test cavity; the lithium battery testing device is characterized in that a plurality of bearing plates are installed in the testing cavity in a sliding mode, the lithium batteries are arranged on the upper sides of the bearing plates, the bearing plates are provided with a plurality of first through holes which are evenly distributed, and the rear side of the testing cavity is provided with a plurality of protection mechanisms corresponding to the bearing plates; when the lithium battery is on fire accidentally, the lithium battery can be covered by the protective shell, and meanwhile, the through hole in the bearing plate is also blocked to form a closed space, so that the lithium battery which is not on fire is prevented from being damaged, and finally, the lithium battery on fire is extinguished to prevent disasters.

Description

Technical Field

[0001] The invention belongs to the technical field of test chambers, and in particular relates to a humidity test device and a protection method. Background Art

[0002] Test chamber is a general term for environmental testing products. It simulates the natural climate environment within an effective space. The temperature test chamber is divided into high and low temperature test chamber, high and low temperature alternating humidity test chamber, temperature shock test chamber, high and low temperature humidity test chamber, and constant temperature and humidity test chamber. Temperature and humidity detection is a more important test for lithium batteries. In the existing test chamber, if the lithium battery spontaneously ignites during the test, it is difficult to control, which poses a great safety hazard. Summary of the invention

[0003] The purpose of the present invention is to provide a humidity testing device and a protection method to solve the problems raised in the background technology.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0005] A humidity test device, comprising a test box and a lithium battery to be tested, wherein the left side of the lithium battery is provided with positive and negative electrodes, the right side of the test box is provided with a control panel, the test box is provided with a test chamber, a plurality of bearing plates are slidably installed in the test chamber, the lithium battery is arranged on the upper side of the bearing plate, the bearing plate is provided with a plurality of evenly distributed first through holes, and a protective mechanism corresponding to the plurality of bearing plates is provided at the rear side of the test chamber;

[0006] The protection mechanism comprises a mounting groove provided at the rear side of the test chamber, a first rotating shaft is rotatably mounted in the mounting groove, a protection shell is fixed on the upper side of the first rotating shaft, a nozzle is provided in the protection shell, the nozzle is connected to an external water source, a rotating assembly capable of driving the first rotating shaft to rotate is provided in the mounting groove, a fire detector is provided in the test chamber, and the fire detector is connected to the control panel signal;

[0007] A rectangular frame is installed at the bottom of the carrying plate, a blocking plate is slidably provided in the rectangular frame, the blocking plate is provided with second through holes corresponding to the first through holes one by one, a first spring is provided between the front side of the blocking plate and the rectangular frame, a sliding groove is opened on the rear side of the rectangular frame, a pushing block is slidably provided in the sliding groove, an inclined surface is processed on the bottom of the pushing block, a sliding plate extending into the sliding groove is fixed to the rear end of the blocking plate, the end of the sliding plate abuts against the inclined surface of the pushing block, and a top block extending out of the sliding groove is fixed to the upper end of the pushing block.

[0008] The rotating assembly includes a movable rod slidably provided on the side wall of the installation groove, the first rotating shaft is fixed with a first gear, the movable rod is fixed with a first rack meshing with the first gear, a cylinder is installed in the test cavity, and the output shaft of the cylinder is connected to the movable rod.

[0009] A limiting mechanism is installed on the upper side of the carrying plate. The limiting mechanism includes a rectangular frame fixed on the upper side of the carrying plate. L-shaped plates are fixed at four ends of the rectangular frame. The lithium battery is arranged between the four L-shaped plates.

[0010] A first cylinder is installed on the left wall of the test chamber, a first piston rod is sealed and slidably arranged in the first cylinder, a strip plate is connected to the end of the first piston rod, an electrode connector matching the positive and negative electrodes of the lithium battery is installed on the first strip plate, and the electrode connector is connected to an external device through a wiring harness, a second cylinder is installed on the outer wall of the test box, a second piston rod is sealed and slidably arranged in the second cylinder, hydraulic oil is stored in the second cylinder, the first cylinder and the second cylinder are connected through a pipeline, and a sliding plate is fixed to the front end of the second piston rod;

[0011] A sealing door is rotatably mounted on the front side of the test chamber via a second rotating shaft, a second gear is connected to the lower end of the second rotating shaft, a second rack is fixed to the lower end of the sliding plate, and the second gear is meshed with the second rack via an idler gear.

[0012] A rectangular cavity is formed on the side wall of the mounting groove, a rectangular plate is sealed and slidably provided in the rectangular cavity, a sleeve is connected to one side of the rectangular plate, one end of the first rotating shaft extends into the interior of the sleeve, a spiral groove is formed on the inner wall of the sleeve, a guide block matching the spiral groove is fixed to the first rotating shaft, and the rectangular cavity is connected to the first cylinder through an oil pipe.

[0013] A first strip-shaped cavity is provided in the L-shaped plate, a third piston rod is provided in a sealing and sliding manner at the lower side of the first strip-shaped cavity, a second spring is provided between the upper side of the third piston rod and the side wall of the first strip-shaped cavity, a third rack is connected to the upper end of the third piston rod, a third gear is rotatably mounted on the upper side of the L-shaped plate, the third gear is meshed with the third rack through a second idler gear, a limit plate is slidably provided at the upper end of the L-shaped plate, and a fourth rack meshed with the third gear is fixed to the lower side of the limit plate;

[0014] A liquid storage cavity is provided inside the carrier plate, and hydraulic oil is also stored in the liquid storage cavity. The liquid storage cavity is connected to the first strip cavity, and a piston block is sealed and slidably provided in the liquid storage cavity. A first magnetic block is fixed to one side of the piston block, and a second magnetic block matching the position of the first magnetic block is installed on the lower side of the strip plate.

[0015] The rectangular frame is provided with two groups of cleaning components matching the positive and negative electrodes of the lithium battery, the cleaning components include a second strip cavity opened by the rectangular frame, the second strip cavity is connected with the liquid storage cavity, the second strip cavity is sealed and slidably provided with a fourth piston rod, a third spring is provided between the fourth piston rod and the second lower cavity, the end of the fourth piston rod is connected with a fifth rack, the rectangular frame is rotatably equipped with a fourth gear meshing with the fifth gear, and the fourth gear is connected with a cleaning brush.

[0016] A protection method for a humidity testing device comprises the following steps:

[0017] Step 1: First, place the carrier plate inside the test chamber, then place the lithium battery on the carrier plate, and close the sealed door, which can automatically make the electrode connector on the strip plate contact the lithium battery, so that the lithium battery is connected to the external equipment. The temperature and humidity inside the test chamber of the test box cover plate can simulate different environments;

[0018] Step 2: When the fire detector detects that the lithium battery is on fire, the protective shell is turned downward by rotating the assembly, and the protective shell and the lithium battery are completely covered to form a closed space to prevent damage to the lithium battery that has not caught fire;

[0019] Step 3: Supply water to the nozzle inside the protective shell through an external water source. The nozzle sprays liquid toward the burning lithium battery to extinguish the fire of the lithium battery and avoid disasters.

[0020] The present invention can perform temperature and humidity tests on multiple lithium batteries. When a lithium battery catches fire accidentally, the lithium battery can be covered by a protective shell, and the through holes on the carrier plate will also be blocked to form a closed space to prevent the lithium batteries that have not caught fire from being damaged. Finally, the lithium battery that has caught fire can be extinguished to prevent disasters. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further illustrated by means of the non-limiting examples given in the accompanying drawings.

[0022] Figure 1 It is a structural schematic diagram of an embodiment of a humidity testing device of the present invention;

[0023] Figure 2 It is a partial cross-sectional structural schematic diagram of an embodiment of a humidity testing device of the present invention;

[0024] Figure 3 for Figure 2 A schematic diagram of the structure enlargement at the center A;

[0025] Figure 4 A schematic cross-sectional view of a humidity test device according to an embodiment of the present invention Figure 1 ;

[0026] Figure 5for Figure 4 A schematic diagram of the structure enlarged at B in the middle;

[0027] Figure 6 A schematic cross-sectional view of a humidity test device according to an embodiment of the present invention Figure 2 ;

[0028] Figure 7 for Figure 6 A schematic diagram of the structure enlarged at C in the middle;

[0029] Figure 8 It is a schematic diagram of the overall structure of the load-bearing plate of the present invention;

[0030] Fig. 9 It is a schematic diagram of the cross-sectional structure of the load-bearing plate of the present invention;

[0031] Fig.10 It is a schematic diagram of a partial cross-sectional structure of an L-shaped plate of the present invention;

[0032] Fig.11 It is a schematic diagram of the partial cross-sectional structure of the rectangular frame of the present invention.

[0033] The main component symbols are described as follows:

[0034] Lithium battery 0, test box 1, control panel 101, test chamber 11, bearing plate 12, first through hole 121, mounting groove 13, movable rod 131, first rotating shaft 14, first gear 141, first rack 142, protective shell 15, rectangular frame 2, blocking plate 21, second through hole 22, first spring 23, slide groove 24, push block 25, slide plate 26, top block 27, rectangular frame 3, L-shaped plate 31, first cylinder 4, first piston rod 41, strip plate 42, electrode connector 43, second cylinder 44, second piston rod 45, sliding plate 46, second rack 461, second rotating shaft 47, sealing door 471, second gear 472, rectangular cavity 5, rectangular plate 51, sleeve 52, first strip cavity 6, third piston rod 61, third rack 63, third gear 631, limit plate 64, fourth rack 65, liquid storage cavity 66, piston block 67, first magnetic block 671, second magnetic block 672, second strip cavity 7, fourth piston rod 71, fifth rack 73, fourth gear 74, cleaning brush 75. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0036] like Figure 1-11As shown, a humidity test device of the present invention comprises a test box 1 and a lithium battery 0 to be tested, wherein the left side of the lithium battery 0 is provided with positive and negative electrodes, the right side of the test box 1 is provided with a control panel 101, the test box 1 is provided with a test chamber 11, a plurality of bearing plates 12 are slidably provided in the test chamber 11, the lithium battery 0 is provided on the upper side of the bearing plate 12, the bearing plate 12 is provided with a plurality of evenly distributed first through holes 121, and a protective mechanism corresponding to the plurality of bearing plates 12 is provided at the rear side of the test chamber 11;

[0037] The protection mechanism includes a mounting groove 13 provided at the rear side of the test chamber 11, a first rotating shaft 14 is rotatably mounted in the mounting groove 13, a protection shell 15 is fixed on the upper side of the first rotating shaft 14, a nozzle is provided in the protection shell 15, the nozzle is connected to an external water source, a rotating assembly that can drive the first rotating shaft 14 to rotate is provided in the mounting groove 13, a fire detector is provided in the test chamber 11, and the fire detector is connected to the control panel 101 by signal;

[0038] A rectangular frame 2 is installed at the bottom of the carrying plate 12, and a blocking plate 21 is slidably provided in the rectangular frame 2. The blocking plate 21 is provided with second through holes 22 corresponding to the first through holes 121 one by one, and a first spring 23 is provided between the front side of the blocking plate 21 and the rectangular frame 2. A slide groove 24 is opened on the rear side of the rectangular frame 2, and a push block 25 is slidably provided in the slide groove 24. The bottom of the push block 25 is processed with an inclined surface, and a slide plate 26 extending into the slide groove 24 is fixed to the rear end of the blocking plate 21, and the end of the slide plate 26 abuts against the inclined surface of the push block 25, and a top block 27 extending out of the slide groove 24 is fixed to the upper end of the push block 25.

[0039] The test box 1 can control the temperature and humidity inside the test chamber 11, and the temperature range is -20-150°C, and the humidity range is 10-98%RH. The humidification method adopts boiler humidification and PID automatic adjustment control. The above technical means are conventional technical means in the technical field, so they are not repeated here;

[0040] In the initial state, under the elastic force of the first spring 23, the blocking plate 21 at the bottom of the supporting plate 12 has a plurality of second through holes 22 which correspond one to one with a plurality of first through holes 121 of the supporting plate 12;

[0041] When in use, the carrier plate 12 is installed inside the test chamber 11, and the lithium battery 0 to be tested is placed in the middle of the carrier plate 12, and the sealing door 471 is closed. The operator controls the temperature and humidity inside the test chamber 11 through the control panel 101, so that the lithium battery 0 is in a specified temperature and humidity space, simulating different temperature and humidity environments, and testing the working state of the lithium battery 0 in different temperature and humidity environments. A temperature sensor in contact with the lithium battery 0 is provided on the carrier plate 12 to detect the temperature of the lithium battery 0 inside the test chamber 11. Multiple carrier plates 12 can be arranged inside the test chamber 11, and multiple lithium batteries 0 can be tested at the same time, and multiple test data can be compared. The through holes on the carrier plate 12 facilitate the gas flow inside the test chamber 11 to ensure that the temperature and humidity inside the test chamber 11 are consistent;

[0042] When the lithium battery 0 accidentally catches fire inside the test chamber 11, the fire detector detects the signal immediately and transmits the signal to the control panel 101. The control panel 101 stops the test inside the test chamber 11 and starts the rotating assembly to drive the first rotating shaft 14 to rotate. The first rotating shaft 14 drives the protective shell 15 located in the mounting groove 13 to flip downward. The protective shell 15 is in tight contact with the upper surface of the carrier plate 12 to cover the lithium battery 0 on the carrier plate 12. Before the lower side of the protective shell 15 contacts the carrier plate 12, it contacts the top block 27 to push the top block 27 downward. 27 drives the push block 25 to move downward, and pushes the slide plate 26 to slide forward. Even if the blocking plate 21 slides forward, the second through hole 22 on the blocking plate 21 and the first through hole 121 on the carrier plate 12 will be staggered with each other. In this way, after the protective shell 15 covers the carrier plate 12, the through hole at the bottom of the carrier plate 12 will also be blocked, so that a closed space will be formed inside the protective shell 15 to prevent the lithium battery 0 that has not caught fire from being damaged. At the same time, the external water source is used to transport it to the nozzle to extinguish the fire of the lithium battery 0 that has caught fire. Other fire extinguishing methods can also be selected, such as using dry powder for fire extinguishing;

[0043] The present invention can perform temperature and humidity tests on multiple lithium batteries. When a lithium battery catches fire accidentally, the lithium battery can be covered by a protective shell, and the through holes on the carrier plate will also be blocked to form a closed space to prevent the lithium batteries that have not caught fire from being damaged. Finally, the lithium battery that has caught fire can be extinguished to prevent disasters.

[0044] The rotating assembly includes a movable rod 131 slidably disposed on the side wall of the mounting groove 13, a first gear 141 is fixed to the first rotating shaft 14, a first rack 142 meshing with the first gear 141 is fixed to the movable rod 131, a cylinder 143 is installed in the test chamber 11, and an output shaft of the cylinder 143 is connected to the movable rod 131;

[0045] In this way, the cylinder 143 drives the movable rod 131 to move downward, and through the meshing of the first rack 142 and the first gear 141, the first rotating shaft 14 can be driven to rotate, thereby realizing the automatic flipping of the protective shell 15 to protect the lithium battery and extinguish the fire.

[0046] A limiting mechanism is installed on the upper side of the carrying plate 12, and the limiting mechanism includes a rectangular frame 3 fixed on the upper side of the carrying plate 12, and L-shaped plates 31 are fixed at four ends of the rectangular frame 3, and the lithium battery 0 is arranged between the four L-shaped plates 31;

[0047] A first cylinder 4 is installed on the left wall of the test chamber 11, a first piston rod 41 is sealed and slidably provided in the first cylinder 4, a strip plate 42 is connected to the end of the first piston rod 41, an electrode connector 43 matching the positive and negative electrodes of the lithium battery 0 is installed on the first strip plate 42, and the electrode connector is connected to the external equipment through a wiring harness, a second cylinder 44 is installed on the outer wall of the test box 1, a second piston rod 45 is sealed and slidably provided in the second cylinder 44, hydraulic oil is stored in the second cylinder 44, the first cylinder 4 and the second cylinder 44 are connected through a pipeline, and a sliding plate 46 is fixed to the front end of the second piston rod 45;

[0048] A sealing door 471 is rotatably mounted on the front side of the test chamber 11 via a second rotating shaft 47. A second gear 472 is connected to the lower end of the second rotating shaft 47. A second rack 461 is fixed to the lower end of the sliding plate 46. The second gear 472 meshes with the second rack 461 via an idler gear.

[0049] A rectangular cavity 5 is formed on the side wall of the mounting groove 13, a rectangular plate 51 is sealed and slidably provided in the rectangular cavity 5, a sleeve 52 is connected to one side of the rectangular plate 51, one end of the first rotating shaft 14 extends into the sleeve 52, a spiral groove is formed on the inner wall of the sleeve 52, a guide block matching the spiral groove is fixed to the first rotating shaft 14, and the rectangular cavity 5 is connected to the first cylinder 4 through an oil pipe;

[0050] When in use, the operator first puts the lithium battery 0 between the four L-shaped plates 31 to position the lithium battery 0, and then closes the sealing door 471. When the sealing door 471 is closed, the second gear 472 is driven to rotate through the second rotating shaft 47, and then the second rack 461 is driven to slide through the idler wheel, that is, the sliding plate 46 will slide backward, pushing the second piston rod 45 to move backward, pushing the hydraulic oil inside the second cylinder 44 into the first cylinder 4, so that the first piston rod 41 inside the first cylinder 4 slides to the right, that is, driving the electrode connector 43 on the strip plate 42 to slide to the right, and contacting the positive and negative electrodes of the lithium battery 0. Therefore, when the temperature and humidity test is performed on the lithium battery 0, the lithium battery 0 is electrically connected to the external equipment, so that the lithium battery 0 can be in a working state, and the lithium battery 0 can work under different temperature and humidity environments to achieve a better test effect;

[0051] In this way, when the operator closes the sealed door 471, the lithium battery 0 can be automatically connected to the external device, and when the operator opens the sealed door 471, the lithium battery 0 can be automatically disconnected from the external device, which makes the operation more convenient and avoids the situation where the lithium battery 0 is not disconnected from the external device after the operator opens the sealed door 471, and an explosion occurs due to a sudden change in ambient temperature and humidity;

[0052] After the lithium battery 0 catches fire, the first rotating shaft 14 rotates to drive the protective shell 15 to flip downward, and in the process of protecting the lithium battery 0 to form a closed space, since the first rotating shaft 14 extends into the guide block connected to one end of the sleeve 52 and is located in the spiral groove of the sleeve 52, when the first rotating shaft 14 rotates, it can drive the sleeve 52 to slide, that is, drive the rectangular plate 51 to move in the rectangular cavity 5. Since the rectangular cavity 5 is connected to the first cylinder 4 through the oil pipe, the movement of the rectangular plate 51 can draw the hydraulic oil inside the first cylinder 4 into the rectangular cavity 5, that is, drive the electrode connector 43 on the strip plate 42 away from the lithium battery 0, and the two are separated from each other, thereby disconnecting from the external equipment;

[0053] In this way, when the protective shell 15 is turned downward, the electrode connector 43 on the strip plate 42 can be automatically separated from the lithium battery 0, so that the lithium battery 0 is disconnected from the external device to avoid damage to the external device. After the strip plate 42 is away from the lithium battery 0, the protective shell 15 can also completely cover the lithium battery 0 to form a closed space.

[0054] When the protective shell 15 flips upward and resets, it can drive the rectangular plate 51 to move in the opposite direction in the rectangular cavity 5, that is, push the hydraulic oil back into the first cylinder 4, so that the strip plate 42 is reset to the right. When the operator opens the sealing door 471, the second rotating shaft 47 drives the second gear 472 to rotate in the opposite direction, which can drive the sliding plate 46 to slide forward, drive the second piston rod 45 to move forward, and draw the hydraulic oil into the second cylinder 44. The strip plate 42 will slide to the left away from the lithium battery 0, thereby realizing the opening of the sealing door 471 and the automatic disconnection of the lithium battery 0 from the external equipment.

[0055] A first strip-shaped cavity 6 is provided in the L-shaped plate 31, a third piston rod 61 is provided in a sealing and sliding manner at the lower side of the first strip-shaped cavity 6, a third rack 63 is connected to the upper end of the third piston rod 61, a third gear 631 is rotatably mounted on the upper side of the L-shaped plate 31, the third gear 631 is meshed with the third rack 63 through a second idler gear, a limit plate 64 is provided in a sliding manner at the upper end of the L-shaped plate 31, a fourth rack 65 meshed with the third gear 631 is fixed to the lower side of the limit plate 64;

[0056] A liquid storage chamber 66 is provided inside the carrier plate 12, and hydraulic oil is also stored inside the liquid storage chamber 66. The liquid storage chamber 66 is communicated with the first strip-shaped chamber 6, and a piston block 67 is provided in a sealed and sliding manner inside the liquid storage chamber 66. A first magnetic block 671 is fixed to one side of the piston block 67, and a second magnetic block 672 matching the position of the first magnetic block 671 is installed on the lower side of the strip plate 42;

[0057] After the carrying plate 12 is installed in the test cavity 11, the positions of the first magnetic block 671 and the second magnetic block 672 correspond to each other, so when the strip plate 42 slides to the right and approaches the lithium battery, the second magnetic block 672 is attracted to the first magnetic block 671, driving the first magnetic block 671 to slide to the right, that is, the piston block 67 slides to the right, pushing the internal hydraulic oil into the first strip cavity 6, even if the third piston rod 61 moves upward, driving the third rack 63 to move upward, driving the third gear 631 to rotate through the second idler gear, and driving the limit plate 64 to move toward the middle of the lithium battery 0 by meshing with the fourth rack 65, so that the limit plate 64 will slide to the upper end of the lithium battery 0, limit the upper part of the lithium battery 0, and fix the lithium battery 0 on the carrying plate 12, without additional operation, using the movement of the strip plate 42 to realize the automatic movement of the limit plate 64;

[0058] In this way, during the test, after the test box 1 collides, the lithium battery 0 can be prevented from shaking, which may cause the battery to be disconnected from the external device.

[0059] The rectangular frame 3 is provided with two sets of cleaning components matching the positive and negative electrodes of the lithium battery 0, and the cleaning components include a second strip cavity 7 opened by the rectangular frame 3, the second strip cavity 7 is connected to the liquid storage cavity 66, the second strip cavity 7 is sealed and slidably provided with a fourth piston rod 71, the end of the fourth piston rod 71 is connected to a fifth rack 73, the rectangular frame 3 is rotatably equipped with a fourth gear 74 meshing with the fifth gear 73, and the fourth gear 74 is connected to a cleaning brush 75;

[0060] In the initial state, the cleaning brush 75 is located at the lower side of the positive and negative electrodes of the lithium battery 0 and is in a horizontal state; when the strip plate 42 slides to the right, it drives the piston block 67 to slide to the right, and part of the hydraulic oil will enter the second strip cavity 7, pushing the fourth piston rod 71 to move, and driving the fourth gear 74 to rotate through the fifth rack 73, that is, driving the cleaning brush 75 to rotate 180 degrees. During the rotation process, the cleaning brush 75 can contact the electrodes of the lithium battery 0 and brush off the impurities on the electrodes, avoiding impurities adhering to the electrodes of the lithium battery 0 and affecting the electrical connection with external equipment, thereby realizing automatic cleaning of the lithium battery 0, and the structural design is reasonable.

[0061] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A humidity test device, comprising a test box and a lithium battery to be tested, wherein the left side of the lithium battery is provided with positive and negative electrodes, the right side of the test box is provided with a control panel, and the test box is provided with a test chamber, characterized in that: A plurality of bearing plates are slidably mounted in the test chamber, the lithium battery is arranged on the upper side of the bearing plates, the bearing plates are provided with a plurality of evenly distributed first through holes, and a protective mechanism corresponding to the plurality of bearing plates is arranged at the rear side of the test chamber; The protection mechanism comprises a mounting groove provided at the rear side of the test chamber, a first rotating shaft is rotatably mounted in the mounting groove, a protection shell is fixed on the upper side of the first rotating shaft, a nozzle is provided in the protection shell, the nozzle is connected to an external water source, a rotating assembly capable of driving the first rotating shaft to rotate is provided in the mounting groove, a fire detector is provided in the test chamber, and the fire detector is connected to the control panel signal; A rectangular frame is installed at the bottom of the carrying plate, a blocking plate is slidably provided in the rectangular frame, the blocking plate is provided with second through holes corresponding to the first through holes one by one, a first spring is provided between the front side of the blocking plate and the rectangular frame, a sliding groove is opened on the rear side of the rectangular frame, a pushing block is slidably provided in the sliding groove, an inclined surface is processed on the bottom of the pushing block, a sliding plate extending into the sliding groove is fixed to the rear end of the blocking plate, the end of the sliding plate abuts against the inclined surface of the pushing block, and a top block extending out of the sliding groove is fixed to the upper end of the pushing block.

2. A humidity testing device according to claim 1, characterized in that: The rotating assembly includes a movable rod slidably provided on the side wall of the installation groove, the first rotating shaft is fixed with a first gear, the movable rod is fixed with a first rack meshing with the first gear, a cylinder is installed in the test cavity, and the output shaft of the cylinder is connected to the movable rod.

3. A humidity testing device according to claim 1, characterized in that: A limiting mechanism is installed on the upper side of the carrying plate. The limiting mechanism includes a rectangular frame fixed on the upper side of the carrying plate. L-shaped plates are fixed at four ends of the rectangular frame. The lithium battery is arranged between the four L-shaped plates.

4. A humidity testing device according to claim 3, characterized in that: A first cylinder is installed on the left wall of the test chamber, a first piston rod is sealed and slidably arranged in the first cylinder, a strip plate is connected to the end of the first piston rod, an electrode connector matching the positive and negative electrodes of the lithium battery is installed on the first strip plate, and the electrode connector is connected to an external device through a wiring harness, a second cylinder is installed on the outer wall of the test box, a second piston rod is sealed and slidably arranged in the second cylinder, hydraulic oil is stored in the second cylinder, the first cylinder and the second cylinder are connected through a pipeline, and a sliding plate is fixed to the front end of the second piston rod; A sealing door is rotatably mounted on the front side of the test chamber via a second rotating shaft, a second gear is connected to the lower end of the second rotating shaft, a second rack is fixed to the lower end of the sliding plate, and the second gear is meshed with the second rack via an idler gear.

5. A humidity testing device according to claim 4, characterized in that: A rectangular cavity is formed on the side wall of the mounting groove, a rectangular plate is sealed and slidably provided in the rectangular cavity, a sleeve is connected to one side of the rectangular plate, one end of the first rotating shaft extends into the interior of the sleeve, a spiral groove is formed on the inner wall of the sleeve, a guide block matching the spiral groove is fixed to the first rotating shaft, and the rectangular cavity is connected to the first cylinder through an oil pipe.

6. A humidity testing device according to claim 5, characterized in that: A first strip-shaped cavity is provided in the L-shaped plate, a third piston rod is provided in a sealing and sliding manner at the lower side of the first strip-shaped cavity, a second spring is provided between the upper side of the third piston rod and the side wall of the first strip-shaped cavity, a third rack is connected to the upper end of the third piston rod, a third gear is rotatably mounted on the upper side of the L-shaped plate, the third gear is meshed with the third rack through a second idler gear, a limit plate is slidably provided at the upper end of the L-shaped plate, and a fourth rack meshed with the third gear is fixed to the lower side of the limit plate; A liquid storage cavity is provided inside the carrier plate, and hydraulic oil is also stored in the liquid storage cavity. The liquid storage cavity is connected to the first strip cavity, and a piston block is sealed and slidably provided in the liquid storage cavity. A first magnetic block is fixed to one side of the piston block, and a second magnetic block matching the position of the first magnetic block is installed on the lower side of the strip plate.

7. A humidity testing device according to claim 6, characterized in that: The rectangular frame is provided with two groups of cleaning components matching the positive and negative electrodes of the lithium battery, the cleaning components include a second strip cavity opened by the rectangular frame, the second strip cavity is connected with the liquid storage cavity, the second strip cavity is sealed and slidably provided with a fourth piston rod, a third spring is provided between the fourth piston rod and the second lower cavity, the end of the fourth piston rod is connected with a fifth rack, the rectangular frame is rotatably equipped with a fourth gear meshing with the fifth gear, and the fourth gear is connected with a cleaning brush.

8. A protection method for a humidity testing device according to any one of claims 1 to 7, characterized in that: The steps include: Step 1: First, place the carrier plate inside the test chamber, then place the lithium battery on the carrier plate, and close the sealed door, which can automatically make the electrode connector on the strip plate contact the lithium battery, so that the lithium battery is connected to the external equipment. The temperature and humidity inside the test chamber of the test box cover plate can simulate different environments; Step 2: When the fire detector detects that the lithium battery is on fire, the protective shell is turned downward by rotating the assembly, and the protective shell and the lithium battery are completely covered to form a closed space to prevent damage to the lithium battery that has not caught fire; Step 3: Supply water to the nozzle inside the protective shell through an external water source. The nozzle sprays liquid toward the burning lithium battery to extinguish the fire of the lithium battery and avoid disasters.

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