Compression resistance detection equipment for lithium battery processing

Abstract

The invention relates to the technical field of lithium battery compression resistance detection, and discloses a compression resistance detection device for lithium battery processing, the compression resistance detection device comprises a detection table and a detection box, the upper surface of the detection table and the lower surface of the detection box are fixedly installed, and the interior of the detection table and the two sides of the interior of the detection box are connected and separated through expansion falling fire extinguishing assemblies. According to the compression resistance detection equipment for lithium battery processing, passive triggering is achieved through the thermal expansion characteristic of the low-melting-point alloy, when the temperature in the detection box exceeds a threshold value, the low-melting-point alloy is automatically melted and expanded, a piston block is pushed to move, then a fire extinguishing program is started through structural linkage, external power or manual intervention is not needed in the whole process, and the safety is high. The response speed is high, reliability is high, through rotation of a connecting shaft, on one hand, fire extinguishing equipment is started through a third gear and a third toothed plate, and on the other hand, a placement plate is driven to rotate, so that a limiting plate relieves constraint on a lithium battery body, the lithium battery body automatically breaks away from a test station, and heat spreading is effectively blocked.

Description

TECHNICAL FIELD

[0001] The application relates to a pressure resistance detection device for lithium battery processing. BACKGROUND

[0002] A lithium battery is a high-efficiency and rechargeable secondary battery, energy storage and release are realized through migration of lithium ions between positive and negative electrodes, the core is composed of a positive electrode (such as lithium cobaltate, lithium iron phosphate, etc.), a negative electrode (usually graphite), an electrolyte (an organic solution containing a lithium salt) and a separator, during charging, lithium ions are deintercalated from the positive electrode, embedded into the negative electrode through the electrolyte, and during discharging, the lithium ions move in the opposite direction, the lithium battery is known for high energy density, low self-discharge rate and long cycle life, and has no memory effect, but a protection circuit is required to prevent overcharging and discharging, and is widely used in consumer electronics, electric vehicles and energy storage systems.

[0003] Before the lithium battery is used, relevant pressure resistance detection operation needs to be performed on the lithium battery, the existing lithium battery pressure resistance detection is a key test for evaluating the safety of the battery structure and the thermal stability under simulated mechanical stress conditions, high-speed photography, infrared thermal imaging and synchronous radiation X-ray imaging are combined to capture the micro failure process of the separator rupture, the electrode deformation and the electrolyte leakage in real time, and a multi-sensor fusion system predicts the mechanical fatigue threshold of the battery through acoustic emission signals or strain gauge data.

[0004] However, the lithium battery may suddenly catch fire after several hours or even several days after the pressure resistance detection, although the lithium battery appears to be normal, if there is hidden damage (such as a microcrack in the separator, electrode deformation or slow leakage of electrolyte), this delayed fire phenomenon is more dangerous than immediate failure, which causes the battery to suddenly catch fire without warning, high temperature may cause chain thermal runaway leading to explosion, and release of highly toxic gases such as hydrogen fluoride (HF) and carbon monoxide, which poses an acute poisoning risk to on-site personnel, and the fire is difficult to be discovered in time, often delaying the opportunity to put out the fire, causing the fire to spread to surrounding equipment or building structures, further increasing the danger in reality.

[0005] In addition, when the lithium battery suddenly catches fire, the lithium battery cannot be released in time and automatically, and the lithium battery cannot be put out in a reciprocating manner for more thorough extinguishing operation, and when the lithium battery suddenly catches fire, it cannot be put out in time, which will also cause the electrolyte jet fire flow to spread along the ground to form a secondary fire, and the delay in extinguishing will also greatly increase the difficulty and cost of cleaning up afterwards, causing unnecessary economic losses, and uncontrollable combustion will also cause the key evidence of battery failure analysis to be completely destroyed, seriously affecting the development of safety improvement programs, and is not conducive to obtaining more accurate experimental data. SUMMARY

[0006] In view of the deficiencies of the prior art, the present application provides a compression resistance detection equipment for lithium battery processing, which has the advantages of being able to timely and automatically release the limiting of the lithium battery and being able to perform reciprocating extinguishing operation when extinguishing, thereby solving the problems raised in the background art.

[0007] The present application provides the following technical solution: a compression resistance detection equipment for lithium battery processing, comprising a detection table and a detection box, the upper surface of the detection table and the lower surface of the detection box are fixedly installed, the inside of the detection table and the two sides of the inside of the detection box are connected and separated by an expansion and falling extinguishing assembly;

[0008] The power input end of the expansion and falling extinguishing assembly is connected with a pushing opening and closing mechanism which converts heat source expansion into pushing force, the pushing opening and closing mechanism is connected with a reciprocating extinguishing mechanism which converts rotary force into linear induction force when running, and the reciprocating extinguishing mechanism performs automatic extinguishing work through induction force;

[0009] The expansion and falling extinguishing assembly is composed of the pushing opening and closing mechanism and the reciprocating extinguishing mechanism.

[0010] Preferably, the pushing opening and closing mechanism comprises a connecting shaft, a receiving pipe, a low-melting-point alloy, a connecting rod, a piston block, a receiving block, a toothed plate one and a gear one, the outer surface of the connecting shaft is rotatably connected with the inner wall of the detection table, the left side of the receiving pipe is fixedly installed with the left side inside the support frame, the outer surface of the low-melting-point alloy is fixedly installed with the inside of the receiving pipe, one end of the connecting rod is fixedly connected with the right side of the low-melting-point alloy, the left side of the piston block is fixedly installed with the other end of the connecting rod, the upper surface of the receiving block is fixedly installed with the bottom of the piston block, the upper surface of the toothed plate one is fixedly connected with the lower surface of the receiving block, and the outer surface of the gear one is engaged with the lower surface of the toothed plate one.

[0011] Preferably, the reciprocating extinguishing mechanism comprises a gear three, a limiting block, a toothed plate three, an extension plate, a proximity sensor, an extinguishing box and a circulating pump, the upper surface of the extinguishing box is fixedly installed with the lower surface of the detection table, the upper surface of the limiting block is fixedly installed with the lower surface of the detection table, the outer surface of the toothed plate three is slidably connected with the inner wall of the limiting block, the outer surface of the gear three is engaged with the upper surface of the toothed plate three, the inside of the gear three is fixedly installed with the outer surface of the connecting shaft, the right side of the extension plate is fixedly installed with the left side of the detection table, the top of the proximity sensor is fixedly connected with the bottom of the extension plate, and the suction inlet of the circulating pump is fixedly connected with the inside of the extinguishing box.

[0012] Preferably, the outer surface of the piston block is slidably connected with the inner wall of the receiving pipe, the outer surface of one end of the connecting shaft is fixedly installed with the inside of the gear one, and the back of the receiving block is fixedly installed with a toothed plate two.

[0013] Preferably, the connecting shaft outer surface is fixedly installed with a placement plate, the upper surface of the placement plate is fixedly installed with a torsion spring hinge seat on both sides, and the hinge of the torsion spring hinge seat is fixedly installed with a limiting plate.

[0014] Preferably, the upper surface of the placement plate is placed with a lithium battery body, and the two sides of the lithium battery body are in abutment with the opposite sides of the two groups of limiting plates.

[0015] Preferably, the inside of the torsion spring hinge seat is provided with a hinge shaft, the outer surface of one end of the hinge shaft is fixedly installed with a gear two, and the outer surface of the gear two is in engagement with the upper surface of the gear plate two.

[0016] Preferably, the bottom of the detection table is fixedly installed with a support frame, the inside of the detection box is hingedly provided with a protective door, the front surface of the protective door is fixedly installed with a handle, the upper surface of the detection box is provided with a hydraulic cylinder, and one end of the output shaft of the hydraulic cylinder is fixedly installed with a pressing block.

[0017] Preferably, the bottom of the circulating pump is fixedly installed with a fixed plate, the two sides of the fixed plate are fixedly installed with one side of the support frame, the output end of the circulating pump is fixedly connected with a circulating pipe, the outer surface of the other end of the circulating pipe is fixedly installed with the inside of the fire extinguishing box, the left side of the fire extinguishing box is fixedly installed with a support plate, and the left side of the support plate is in abutment with the outer surface of the circulating pipe.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] 1. The lithium battery processing pressure detection equipment realizes passive triggering through the thermal expansion characteristics of the low-melting-point alloy. When the temperature in the detection box exceeds the threshold value, the low-melting-point alloy automatically melts and expands to push the piston block to move, and then the fire extinguishing program is started through structural linkage. The whole process does not require external power or manual intervention, has fast response speed and high reliability, and through the rotation of the connecting shaft, on one hand, the gear three and the gear plate three start the fire extinguishing equipment, and on the other hand, the placement plate is driven to rotate, so that the limiting plate releases the constraint on the lithium battery body, and the lithium battery body automatically separates from the test station, effectively blocks the spread of heat, realizes the rapid isolation of the lithium battery body, effectively prevents the spread of fire, and achieves the effect of fast and efficient use.

[0020] 2. The lithium battery processing pressure detection equipment converts the rotary motion of the connecting shaft into linear motion through the engagement transmission of the gear three and the gear plate three, cooperates with the action of the proximity sensor to start the fire extinguishing operation, forms a closed loop flow of fire extinguishing agent through the circulating pump through the circulating pipe, achieves the effect of efficient fire extinguishing, and through the abutment limiting of the support plate on the pipeline, inhibits the injection recoil vibration, and can achieve the effect of being safer and more efficient during fire extinguishing. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic view of the overall structure of the device of the present application;

[0022] Figure 2 is a schematic view of the internal structure of the device of the present application; Figure 1

[0023] Figure 3 is a schematic view of the partial structure of the device of the present application; Figure 1

[0024] Figure 4 is a schematic view of the local structure of the device of the present application; Figure 1

[0025] Figure 5 is a schematic view of the structure of the device of the present application from another perspective; Figure 4

[0026] Figure 6 is a schematic view of the structure of the device of the present application from a bottom perspective; Figure 4

[0027] Figure 7 is a schematic view of the structure of the device of the present application at position A; Figure 4

[0028] Figure 8 is a schematic view of the structure of the device of the present application at position B. Figure 5

[0029] In the figure: 1, detection platform; 2, support frame; 3, detection box; 4, protective door; 5, handle; 6, hydraulic cylinder; 7, pressing block; 8, lithium battery body; 9, connecting shaft; 10, placing plate; 11, torsional spring hinged seat; 12, limiting plate; 13, receiving pipe; 14, low-melting alloy; 15, connecting rod; 16, piston block; 17, receiving block; 18, toothed plate one; 19, gear one; 20, toothed plate two; 21, gear two; 22, gear three; 23, limiting block; 24, toothed plate three; 25, extension plate; 26, proximity sensor; 27, fixed plate; 28, fire extinguishing box; 29, circulating pump; 30, circulating pipe; 31, support plate; 32, hinged shaft. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] Please refer to Figure 4 and Figure 7 ​​​​​​​The utility model provides a kind of anti-pressure detection equipment for lithium battery processing, including detection table 1 and detection box 3, the upper surface of detection table 1 is fixedly installed with the lower surface of detection box 3, the inside of detection table 1 is connected with the both sides inside detection box 3 by expansion falling fire extinguishing component to realize connection and separation;

[0032] The power input end of the expansion falling fire extinguishing component is connected with a push opening and closing mechanism that converts the expansion of a heat source into a pushing force. The push opening and closing mechanism is connected with a reciprocating fire extinguishing mechanism that converts rotational force into linear sensing force when in operation. The reciprocating fire extinguishing mechanism performs automatic fire extinguishing work through the linear sensing force.

[0033] The expansion falling fire extinguishing component is composed of the push opening and closing mechanism and the reciprocating fire extinguishing mechanism. The push opening and closing mechanism includes a connecting shaft 9, a receiving pipe 13, a low-melting-point alloy 14, a connecting rod 15, a piston block 16, a receiving block 17, a toothed plate 1 18, and a gear 1 19. The outer surface of the connecting shaft 9 is rotationally connected with the inner wall of the detection table 1. The left side of the receiving pipe 13 is fixedly installed with the left side inside the support frame 2. The outer surface of the low-melting-point alloy 14 is fixedly installed with the inside of the receiving pipe 13. One end of the connecting rod 15 is fixedly connected with the right side of the low-melting-point alloy 14. The left side of the piston block 16 is fixedly installed with the other end of the connecting rod 15. The upper surface of the receiving block 17 is fixedly installed with the bottom of the piston block 16. The upper surface of the toothed plate 1 18 is fixedly connected with the lower surface of the receiving block 17. The outer surface of the gear 1 19 is meshed with the lower surface of the toothed plate 1 18. The outer surface of the piston block 16 is slidingly connected with the inner wall of the receiving pipe 13. The outer surface of one end of the connecting shaft 9 is fixedly installed with the inside of the gear 1 19. The back of the receiving block 17 is fixedly installed with a toothed plate 2 20.

[0034] Specifically, the left side of the receiving pipe 13 is fixedly installed with the left side inside the support frame 2, thereby providing a stable installation position for the low-melting-point alloy 14 and related components, ensuring that the low-melting-point alloy 14 can accurately perceive changes in the heat source inside the receiving pipe 13, and achieving the effect of providing a stable installation environment for the heat source perception component. When encountering a heat source, the low-melting-point alloy 14 can rapidly expand, and the expansion force is transmitted to subsequent components through the connecting rod 15, thereby achieving rapid conversion of the heat source into mechanical pushing force and achieving the effect of timely responding to changes in the heat source and transmitting power. The sliding of the piston block 16 drives the receiving block 17 and the toothed plate 1 18 to move synchronously, thereby transmitting the power of the piston block 16 to the toothed plate 1 18. The movement of the toothed plate 1 18 drives the gear 1 19 to rotate around the connecting shaft 9, thereby achieving the effect of converting linear motion into rotational motion and providing a suitable power form for the subsequent reciprocating fire extinguishing mechanism.

[0035] Please refer to Figure 6The reciprocating fire extinguishing mechanism comprises a gear three 22, a limiting block 23, a toothed plate three 24, an extension plate 25, a proximity sensor 26, a fire extinguishing tank 28 and a circulating pump 29. The upper surface of the fire extinguishing tank 28 is fixedly installed with the lower surface of the detection table 1. The upper surface of the limiting block 23 is fixedly installed with the lower surface of the detection table 1. The outer surface of the toothed plate three 24 is slidably connected with the inner wall of the limiting block 23. The outer surface of the gear three 22 is engaged with the upper surface of the toothed plate three 24. The inner part of the gear three 22 is fixedly installed with the outer surface of the connecting shaft 9. The right side of the extension plate 25 is fixedly installed with the left side of the detection table 1. The top of the proximity sensor 26 is fixedly connected with the bottom of the extension plate 25. The suction inlet of the circulating pump 29 is fixedly connected with the inner part of the fire extinguishing tank 28. The bottom of the circulating pump 29 is fixedly installed with a fixed plate 27. The two sides of the fixed plate 27 are fixedly installed with one side of the supporting frame 2. The output end of the circulating pump 29 is fixedly connected with a circulating pipe 30. The outer surface of the other end of the circulating pipe 30 is fixedly installed with the inner part of the fire extinguishing tank 28. The left side of the fire extinguishing tank 28 is fixedly installed with a supporting plate 31. The left side of the supporting plate 31 is in abutment with the outer surface of the circulating pipe 30.

[0036] Specifically, the outer surface of the toothed plate three 24 is slidably connected with the inner wall of the limiting block 23. The limiting block 23 provides an accurate track and limitation for the sliding of the toothed plate three 24, prevents the toothed plate three 24 from deviating or deviating from the predetermined track during the sliding process, ensures the accuracy and stability of the movement of the toothed plate three 24, and achieves the effect of making the toothed plate three 24 move smoothly and linearly. The extension plate 25 provides a suitable installation position and height for the proximity sensor 26, so that the proximity sensor 26 can accurately detect the proximity signal on the toothed plate three 24. When the toothed plate three 24 moves to the appropriate position, the proximity sensor 26 can timely sense and send a signal, and the circulating pump 29 can be started to perform fire extinguishing operation. The circulating pipe 30 constitutes a circulating channel for the fire extinguishing medium. The circulating pump 29 sucks the fire extinguishing medium from the fire extinguishing tank 28, delivers it through the circulating pipe 30 and then returns it to the fire extinguishing tank 28, realizes the recycling of the fire extinguishing medium, improves the use efficiency of the fire extinguishing medium, and at the same time ensures the continuous flow of the fire extinguishing medium in the system, which helps to maintain the performance stability of the fire extinguishing medium, and achieves the effect of efficient recycling of the fire extinguishing medium.

[0037] The supporting plate 31 supports and fixes the circulating pipe 30, prevents the circulating pipe 30 from sagging or deforming due to its own gravity or the pressure generated by the flow of the fire extinguishing medium, ensures the smoothness and stability of the circulating pipe 30, and thus ensures that the fire extinguishing medium can flow smoothly in the circulating pipe 30, thereby achieving the effect of maintaining the stable state of the circulating pipe 30.

[0038] Please refer to Figure 5 and Figure 8The outer surface of the connecting shaft 9 is fixedly installed with a placement plate 10 at the center position, the upper surface of the placement plate 10 is fixedly installed with a torsional spring hinge seat 11 on both sides, the hinge of the torsional spring hinge seat 11 is fixedly installed with a limiting plate 12, the upper surface of the placement plate 10 is placed with a lithium battery body 8, the two sides of the lithium battery body 8 are in abutment with the opposite sides of the two groups of limiting plates 12, the inside of the torsional spring hinge seat 11 is provided with a hinge shaft 32, the outer surface of one end of the hinge shaft 32 is fixedly installed with a gear two 21, and the outer surface of the gear two 21 is in engagement with the upper surface of the toothed plate two 20.

[0039] Specifically, the torsional spring inside the torsional spring hinge seat 11 can give the limiting plate 12 a certain elastic force, so that the limiting plate 12 can rotate flexibly when subjected to external force, and can return to the initial position after the external force disappears, achieving the effect of providing flexible and elastic support for the limiting plate 12. The limiting plate 12 limits and fixes the lithium battery body 8 from both sides, prevents the lithium battery body 8 from moving or shaking horizontally on the placement plate 10, ensures the stability of the lithium battery body 8 during detection, avoids affecting the detection result or causing safety problems due to the movement of the lithium battery body 8, achieves the effect of effectively fixing the lithium battery body 8, the hinge shaft 32 provides a mounting position for the gear two 21, so that the gear two 21 can rotate around the hinge shaft 32, and the hinge shaft 32 also connects the gear two 21 and the torsional spring hinge seat 11 as a whole, ensuring the stability of the gear two 21 during transmission, achieving the effect of providing stable installation and rotating support for the gear two 21.

[0040] When a heat source or the like triggers the push-to-open mechanism to act, the toothed plate two 20 moves to drive the gear two 21 to rotate, the gear two 21 affects the torsional spring hinge seat 11 and the limiting plate 12 through the hinge shaft 32, and the limiting plate 12 acts to release the limiting of the lithium battery body 8.

[0041] Please refer to Figure 1 , Figure 2 and Figure 3 , the bottom of the detection table 1 is fixedly installed with a support frame 2 around, the inside of the detection box 3 is hingedly provided with a protective door 4, the front surface of the protective door 4 is fixedly installed with a handle 5, the upper surface of the detection box 3 is provided with a hydraulic cylinder 6, and one end of the output shaft of the hydraulic cylinder 6 is fixedly installed with a pressing block 7.

[0042] Specifically, the support frame 2 provides a stable support structure for the detection table 1, so that the detection table 1 can be stably placed in the working environment. During the detection process, when it is not necessary to operate the inside of the detection box 3, closing the protective door 4 can form a relatively closed space, effectively blocking dust, sundries and the like from the outside from entering the inside of the detection box 3, avoiding interference or damage to the detection equipment or the lithium battery body 8 and the like in the detection box 3, and achieving the effect of protecting the internal environment and equipment of the detection box 3. When it is necessary to open or close the protective door 4, the operator only needs to hold the handle 5 and apply a corresponding force, so as to easily control the opening and closing of the protective door 4, thereby improving the convenience and efficiency of the operation. The hydraulic cylinder 6 can drive the pressing block 7 to move downward at a predetermined pressure and speed, so as to exert pressure on the lithium battery body 8 placed at a suitable position on the detection table 1, thereby realizing the detection of the compression resistance and other performances of the lithium battery body 8, and achieving the effect of providing pressure power for the detection of the lithium battery.

[0043] The working principle is that when the hydraulic cylinder 6 drives the pressing block 7 to complete the compression test on the lithium battery body 8, if the lithium battery body 8 is internally damaged and causes thermal runaway during the resting stage, the temperature in the detection box 3 rises, the low-melting-point alloy 14 in the receiving pipe 13 melts and expands, pushes the connecting rod 15 to drive the piston block 16 to move to the right, at this time, the receiving block 17 fixedly connected with the piston block 16 synchronously drives the gear plate one 18 to move downward, and through the meshing transmission with the gear one 19, the connecting shaft 9 is rotated, the rotation movement on one hand starts the circulating pump 29 in the fire extinguishing tank 28 through the cooperation of the gear three 22 and the gear plate three 24, so that the fire extinguishing agent forms a closed loop injection through the circulating pipe 30, on the other hand, the middle part of the connecting shaft 9 is rotated through the placement plate 10, so that the limiting plate 12 fixedly connected with the torsional spring hinge seat 11 is released from the constraint on the lithium battery body 8, at the same time, the meshing of the gear two 21 and the gear plate two 20 accelerates the expansion of the limiting plate 12, and the lithium battery body 8 can be away from the upper surface of the placement plate 10, so that it falls into the inside of the fire extinguishing tank 28, ensuring that the lithium battery body 8 in combustion can quickly leave the test station, and the proximity sensor 26 monitors the displacement of the gear plate three 24 in real time, when the gear three 22 and the gear plate three 24 are meshed, the position of the gear plate three 24 is moved to the position of the proximity sensor 26, the circulating pump 29 is triggered to run at full power, and the fire extinguishing agent is extracted from the fire extinguishing tank 28 through the reciprocating type circulating pump 29 to extinguish the fire, so that the fire source can be quickly covered, when the lithium battery body 8 preliminarily falls into the inside of the fire extinguishing tank 28, it stays in the upper part of the fire extinguishing agent in the fire extinguishing tank 28, and the reciprocating extraction of the circulating pump 29 can drive the lithium battery body 8 to completely immerse in the fire extinguishing agent, avoiding rekindling, and through the constraint of the supporting plate 31 on the circulating pipe 30 during use, the vibration of the circulating pipe 30 can be effectively inhibited, the whole structure uses the phase change expansion of the low-melting-point alloy 14 as the initial driving force, converts the linear motion into the rotary motion, and realizes the passive triggering of the fire extinguishing system through the mechanical linkage, and quickly isolates the lithium battery body 8, which realizes the quick realization without external power supply.

[0044] It should be noted that the above-mentioned electrical elements and electrical equipment all use external power supply, the circuits, electronic components and modules involved in the present application are all prior art, and those skilled in the art can realize them without further description, and the content protected by the present application does not involve the improvement of internal structure and method; in addition, in this document, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0045] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since numerous changes, modifications, substitutions and variations can be made thereto without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A compression testing device for lithium battery processing, characterized by: The invention comprises a testing platform (1) and a testing box (3), wherein the upper surface of the testing platform (1) and the lower surface of the testing box (3) are fixedly mounted, and the interior of the testing platform (1) and the two sides of the interior of the testing box (3) are connected and separated by an expansion and drop fire extinguishing assembly; The power input end of the expansion and falling fire extinguishing assembly is connected to a push-opening and closing mechanism that converts expansion upon encountering a heat source into a driving force. The push-opening and closing mechanism is connected to a reciprocating fire extinguishing mechanism that converts a rotational force into a linear induction force during operation. The reciprocating fire extinguishing mechanism performs automatic fire extinguishing work through the induction force. The expanding and falling fire extinguishing assembly consists of a pushing opening and closing mechanism and a reciprocating fire extinguishing mechanism.

2. The compression testing equipment for lithium battery processing according to claim 1, characterized in that: The pushing opening and closing mechanism includes a connecting shaft (9), a receiving tube (13), a low-melting-point alloy (14), a connecting rod (15), a piston block (16), a receiving block (17), a tooth plate (18) and a gear (19). The outer surface of the connecting shaft (9) is rotatably connected to the inner wall of the detection platform (1), the left side of the receiving tube (13) is fixedly installed with the left side inside the support frame (2), the outer surface of the low-melting-point alloy (14) is fixedly installed with the inside of the receiving tube (13), one end of the connecting rod (15) is fixedly connected with the right side of the low-melting-point alloy (14), the left side of the piston block (16) is fixedly installed with the other end of the connecting rod (15), the upper surface of the receiving block (17) is fixedly installed with the bottom of the piston block (16), the upper surface of the tooth plate (18) is fixedly connected with the lower surface of the receiving block (17), and the outer surface of the gear (19) is meshed with the lower surface of the tooth plate (18).

3. The compression testing equipment for lithium battery processing according to claim 1, characterized in that: The reciprocating fire extinguishing mechanism comprises a gear three (22), a limit block (23), a tooth plate three (24), an extension plate (25), a proximity sensor (26), a fire extinguishing box (28) and a circulation pump (29), wherein the upper surface of the fire extinguishing box (28) is fixedly mounted on the lower surface of the detection platform (1), the upper surface of the limit block (23) is fixedly mounted on the lower surface of the detection platform (1), the outer surface of the tooth plate three (24) is slidably connected to the inner wall of the limit block (23), the outer surface of the gear three (22) is meshed with the upper surface of the tooth plate three (24), and the interior of the gear three (22) is fixedly mounted on the outer surface of the connecting shaft (9), the right side of the extension plate (25) is fixedly mounted on the left side of the detection platform (1), the top of the proximity sensor (26) is fixedly connected to the bottom of the extension plate (25), and the suction port of the circulation pump (29) is fixedly connected to the interior of the fire extinguishing box (28).

4. The compression testing equipment for lithium battery processing according to claim 2, characterized in that: The outer surface of the piston block (16) is slidably connected to the inner wall of the receiving tube (13), the outer surface of one end of the connecting shaft (9) is fixedly installed inside the gear one (19), and the back of the receiving block (17) is fixedly installed with a gear plate two (20).

5. The compression testing equipment for lithium battery processing according to claim 2, characterized in that: A placement plate (10) is fixedly mounted at a central position on the outer surface of the connecting shaft (9), and torsion spring hinge seats (11) are fixedly mounted on both sides of the upper surface of the placement plate (10), and a limiting plate (12) is fixedly mounted at the hinge of the torsion spring hinge seat (11).

6. The compression testing equipment for lithium battery processing according to claim 5, characterized in that: A lithium battery body (8) is placed on the upper surface of the placement plate (10), and both sides of the lithium battery body (8) abut against opposite sides of the two groups of limiting plates (12).

7. The compression testing equipment for lithium battery processing according to claim 5, characterized in that: A hinge shaft (32) is provided inside the torsion spring hinge seat (11), and a gear 2 (21) is fixedly mounted on the outer surface of one end of the hinge shaft (32), and the outer surface of the gear 2 (21) is aligned and meshed with the upper surface of the gear plate 2 (20).

8. The compression testing equipment for lithium battery processing according to claim 1, characterized in that: Support frames (2) are fixedly installed around the bottom of the detection platform (1); a protective door (4) is hinged inside the detection box (3); a handle (5) is fixedly installed on the front of the protective door (4); a hydraulic cylinder (6) is provided on the upper surface of the detection box (3); a pressure block (7) is fixedly installed at one end of the output shaft of the hydraulic cylinder (6).

9. The compression testing equipment for lithium battery processing according to claim 3, characterized in that: A fixing plate (27) is fixedly installed at the bottom of the circulation pump (29), and both sides of the fixing plate (27) are fixedly installed with one side of the support frame (2). The output end of the circulation pump (29) is fixedly connected with a circulation pipe (30), and the outer surface of the other end of the circulation pipe (30) is fixedly installed with the inside of the fire extinguishing box (28). A support plate (31) is fixedly installed on the left side of the fire extinguishing box (28), and the left side of the support plate (31) abuts against the outer surface of the circulation pipe (30).

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