Explosion-proof test equipment for new energy battery metal shell

Abstract

The invention relates to the technical field of new energy battery testing, and discloses explosion-proof testing equipment for a new energy battery metal shell, which comprises an equipment main body, a detection cavity is arranged in the equipment main body, a detection table is arranged in the detection cavity, and an air outlet and an ejection mechanism for explosion-proof testing are arranged on the surface of the detection table. A moving groove is formed in the bottom surface of the detection cavity, a supporting plate is installed on the bottom surface of the detection cavity, the detection table is fixedly connected with the surface of the supporting plate, two symmetrically-arranged transverse plates and two symmetrically-arranged side plates are slidably connected to the surface of the supporting plate, the transverse plates and the side plates form a rectangular structure, and the detection table is located in the center of the rectangular structure. According to the explosion-proof test equipment for the new energy battery metal shell, abrasion to the inner sides of the transverse plate and the side plates when the metal shell which expands due to detection is taken out is avoided, and the service life of a fixed mold formed by the transverse plate and the side plates is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy battery testing, and specifically to an explosion-proof testing device for the metal shell of new energy batteries. Background Technique

[0002] New energy batteries, especially lithium-ion batteries, have been widely used in fields such as electric vehicles and portable electronic devices due to their advantages of high energy density, long life, and lightweight. However, with the increase in their usage, the safety issues of batteries have become increasingly prominent. In particular, the phenomenon of thermal runaway that may occur in batteries under extreme conditions such as overcharging, short-circuiting, and high temperature, leading to the risk of fire or even explosion. In order to improve the safety performance of new energy batteries, various safety measures are usually adopted in the design and manufacturing process of batteries. One of them is to add an explosion-proof function to the battery shell. As an important part of the battery, the metal shell not only needs to have good mechanical strength to protect the internal structure, but also needs to be able to effectively release pressure when abnormal situations occur inside the battery to avoid explosion.

[0003] The explosion-proof testing device is mainly used to evaluate the safety of the battery metal shell under extreme conditions, ensuring that when excessive heat or gas is generated inside the battery, it can safely release pressure through a specific design (such as an explosion-proof valve), thereby preventing explosion accidents. General explosion-proof testing devices include a mainframe, a detection box, a detection table, an ejection mechanism, an external air source, a fixed mold, and a pressing mechanism. During the test, the metal shell is sleeved between the detection table and the fixed mold, and then the pressing mechanism is started to fix the metal shell. Then, the external air source fills high-pressure gas into the metal shell through the air outlet on the detection table. The high-pressure gas continuously impacts the explosion-proof valve until the explosion-proof valve is damaged, and then the explosion-proof test data can be obtained. After the test is completed, the ejection mechanism will eject the metal shell from between the detection table and the fixed mold to facilitate the next test. Through the mainframe, the pressure change and the maximum pressure-bearing data during the detection process can be seen, so as to facilitate the staff to evaluate the performance of the metal shell.

[0004] In the prior art, a patent with the patent authorization announcement number CN219284861U discloses a pressure resistance testing mechanism, belonging to the technical field of mechanical equipment, which solves the technical problem that the fragments generated when the battery case explodes scatter everywhere due to the lack of a protection component in the existing such testing mechanism. The above-mentioned pressure resistance testing mechanism includes a sealing component, which is provided with a ventilation hole, and the ventilation hole is connected to a high-pressure gas generator through a gas pipe; the battery case is buckled on the sealing component, and the ventilation hole is located inside the opening of the battery case; a pressing component, which is used to press the battery case on the sealing component so that the sealing component seals the opening of the battery case; a protection component, which is installed on the sealing component, and the battery case is located inside the protection component; the above-mentioned mechanism can not only be used to test the high-pressure resistance ability of the battery case, and the protection component surrounds the periphery of the battery case, and the fragments generated by the explosion of the battery case will be blocked by the protection component and cannot fly out of the protection component, so that the fragments generated by the explosion of the battery case cannot scatter everywhere.

[0005] However, the above-mentioned explosion-proof testing equipment still has certain defects when in use:

[0006] When the above-mentioned explosion-proof testing equipment conducts the explosion-proof performance test on the metal shell, since high-pressure gas is introduced into the metal shell to simulate the explosion pressure, slight outward convex deformation will occur around the metal shell. When the ejection mechanism ejects the metal shell, severe friction will occur between the outward convex part of the metal shell and the inner wall of the fixed mold, which will cause damage to the inner wall of the fixed mold. In the long run, this kind of damage will gradually accumulate, resulting in a decrease in the accuracy of the fixed mold and ultimately shortening its service life. At the same time, this will also cause the fixed mold and the subsequent metal shell to fail to achieve a tight fit, thus affecting the uniform distribution of high-pressure gas during the test, possibly leading to deviations in the subsequent test results, and making the test data unable to accurately reflect the true explosion resistance ability of the metal shell. Summary of the Invention

[0007] Aiming at the deficiencies of the prior art, the present invention provides an explosion-proof testing equipment for a new energy battery metal shell, which avoids the damage to the inner wall of the fixed mold caused by the deformed metal shell.

[0008] To achieve the above object, the present invention provides the following technical solution: An explosion-proof testing device for a metal shell of a new energy battery, comprising a device main body. A detection cavity is arranged inside the device main body. A detection table is installed inside the detection cavity. An air outlet and an ejection mechanism for explosion-proof testing are arranged on the surface of the detection table. A moving groove is formed on the bottom surface of the detection cavity. A support plate is installed on the bottom surface of the detection cavity. The detection table is fixedly connected to the surface of the support plate. Two symmetrically arranged cross plates and two symmetrically arranged side plates are slidably connected to the surface of the support plate. The cross plates and the side plates form a rectangular structure. The detection table is located at the center of the rectangular structure. A plurality of moving components are fixedly connected to the surface of the support plate. Moving components are connected to one side of each of the two cross plates and the two side plates away from the detection table.

[0009] Further, each moving component includes a fixed block. A telescopic groove is formed inside the fixed block. A moving plate is slidably connected inside the telescopic groove. A connecting rod is fixedly connected to the side of the moving plate close to the detection table. One side of each cross plate and side plate is fixedly connected to the connecting rod closest to it. A return spring is fixedly connected inside the telescopic groove. The other end of the return spring is fixedly connected to the side of the moving plate away from the connecting rod. A guide pipe is fixedly connected to the side of the fixed block close to the detection table. The guide pipe is communicated with the telescopic groove. The other end of the guide pipe penetrates through the support plate and enters the moving groove. An air distribution balloon is fixedly connected to the bottom surface of the support plate. One end of each guide pipe located in the moving groove is fixedly connected to the outer wall of the air distribution balloon. An air inlet pipe is fixedly connected to the bottom surface of the air distribution balloon. The other end of the air inlet pipe is connected to an air inlet component.

[0010] Further, rotating rods are fixedly connected to both sides of the support plate. The rotating rods are rotatably connected to the inner wall of the moving groove. The support plate is located inside the moving groove. A fixed column is fixedly connected to the inner side of the bottom surface of the moving groove. A lifting groove is formed inside the fixed column. A piston is slidably connected inside the lifting groove. A push rod is fixedly connected to the surface of the piston. The top end of the push rod is in contact with the bottom surface of the support plate. Two symmetrically arranged support springs are fixedly connected to the side of the bottom surface of the moving groove away from the fixed column. The top ends of the support springs are fixedly connected to the bottom surface of the support plate. A positioning plate is fixedly connected to the front side of the bottom surface of the detection cavity. The surface of the support plate is in contact with the bottom surface of the positioning plate. A through pipe communicated with the lifting groove is fixedly connected to the outer wall of the fixed column. The other end of the through pipe is connected to the air inlet component.

[0011] Further, two symmetrically arranged connecting blocks are fixedly connected to the surface of the support plate. Both of the two connecting blocks are inclined towards the inspection table. Air guide grooves are formed in both of the two connecting blocks. An air guiding pipe is fixedly connected between the two connecting blocks. Two ends of the air guiding pipe are respectively communicated with one air guide groove. A connecting pipe is fixedly connected to the middle of the air guiding pipe. A jet sleeve is fixedly connected to the side of the connecting block facing the inspection table. The jet sleeve is communicated with the air guide groove. A sliding groove is formed on one side of the equipment main body. The sliding groove is located below the positioning plate. A collection box is slidably connected in the sliding groove. The other end of the connecting pipe is connected to an air intake assembly.

[0012] Further, the air intake assembly includes a gas distribution block. The gas distribution block is fixedly connected to the bottom surface of the moving groove. An air inlet pipe is fixedly connected to one side of the gas distribution block. The other end of the air inlet pipe penetrates through the equipment main body and is fixedly connected to an external air source. Three electric valves are fixedly connected to the outer wall of the gas distribution block. The air inlet pipe is communicated with the three electric valves. The ventilation pipe is fixedly connected to one of the electric valves. The air inlet pipe is fixedly connected to the end of the ventilation pipe close to the electric valve. The connecting pipe is fixedly connected to another electric valve. The last electric valve is fixedly connected to an exhaust pipe.

[0013] Further, a partition belt is fixedly connected between the support plate and the bottom surface of the moving groove. The partition belt is attached to the side of the collection box close to the inspection table.

[0014] Further, two symmetrically arranged strengthening plates are fixedly connected to the side of each cross plate and side plate away from the inspection table. The bottom surface of the strengthening plate is attached to the surface of the support plate.

[0015] Further, the air outlet end of the jet sleeve is inclined towards the middle of the surface of the support plate. The bottom surface of the side of the positioning plate close to the inspection table is provided with an inclined surface.

[0016] Further, a handle is fixedly connected to the side of the collection box located outside the equipment main body.

[0017] Further, the top of the push rod is provided with a dome.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. For this explosion-proof test equipment for the metal shell of new energy batteries, by using the moving assembly to move the cross plate and the side plate, it can ensure that during the process of taking out the metal shell, the metal shell will not come into contact with the cross plate and the side plate, thus avoiding the wear on the inner sides of the cross plate and the side plate caused by the expanded metal shell during taking out due to detection, improving the service life of the fixed mold formed by the cross plate and the side plate, and at the same time reducing the resistance during the process of taking out the metal shell, and improving the test experience of the staff.

[0020] 2. The support plate is tilted toward the operating position of the staff, so that the test bench and the metal shell are in a tilted state that is more convenient for the staff to operate. After the support plate is tilted, the staff can see the various parts of the metal shell and the test bench more clearly, which is convenient for the staff to install and remove the metal shell and improve the staff's testing efficiency;

[0021] 3. The tilted design of the support plate and the cooperation of the jet sleeve realize the automatic cleaning of the test debris, reduce the need for manual cleaning, improve work efficiency, keep the internal environment of the test chamber clean, facilitate subsequent testing, and also contribute to the long-term maintenance of the equipment;

[0022] 4. The air intake assembly realizes effective control of each step in the process of disassembly and assembly of the metal shell, ensures the automation and efficiency of the system, and improves work efficiency and operational safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of a three-dimensional cross-sectional structure of another form of the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional split cross-sectional structure of the present invention as a whole;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the support plate, the horizontal plate, the side plate and the fixing block of the present invention;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the support plate, support spring, fixed column and separation zone of the present invention;

[0028] Figure 6 It is a three-dimensional structural schematic diagram of the horizontal plate, side plate, fixed block and air distribution block of the present invention;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the side plate, the fixing block, the connecting rod and the airbag of the present invention;

[0030] Figure 8 It is a schematic diagram of a three-dimensional split cross-sectional structure of a fixed block, a movable plate and a return spring of the present invention;

[0031] Figure 9 It is a three-dimensional structural schematic diagram of the connection block, the air inlet pipe, the fixing column and the air distribution block of the present invention;

[0032] Figure 10 It is a three-dimensional cross-sectional structural schematic diagram of the fixed column, the piston and the push rod of the present invention;

[0033] Figure 11 Schematic three-dimensional sectional structure diagram of the connecting block, jet sleeve and air guiding pipe of the present invention;

[0034] Figure 12 Schematic three-dimensional sectional structure diagram of the equipment main body and positioning plate of the present invention;

[0035] Figure 13 Schematic three-dimensional structure diagram of the collection box and handle of the present invention.

[0036] In the figure: 1, equipment main body; 2, detection cavity; 3, moving groove; 4, support plate; 5, detection table; 6, cross plate; 7, side plate; 8, fixed block; 9, telescopic groove; 10, moving plate; 11, connecting rod; 12, air guiding pipe; 13, sub-airbag; 14, air inlet pipe; 15, rotating rod; 16, fixed column; 17, lifting groove; 18, piston; 19, push rod; 20, ventilation pipe; 21, air distribution block; 22, air inlet pipe; 23, electric valve; 24, exhaust pipe; 25, support spring; 26, positioning plate; 27, connecting block; 28, air guiding pipe; 29, connecting pipe; 30, air guiding groove; 31, jet sleeve; 32, sliding groove; 33, collection box; 34, handle; 35, partition belt; 36, reinforcement plate; 37, return spring. Detailed implementation manners

[0037] 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.

[0038] Please refer to Figures 1 to 13 , an explosion-proof test device for a metal shell of a new energy battery, including an equipment main body 1. A detection cavity 2 is arranged inside the equipment main body 1. A detection table 5 is installed inside the detection cavity 2. An air outlet and an ejection mechanism for explosion-proof testing are arranged on the surface of the detection table 5. A moving groove 3 is opened on the bottom surface of the detection cavity 2. A support plate 4 is installed on the bottom surface of the detection cavity 2. The detection table 5 is fixedly connected to the surface of the support plate 4. Two symmetrically arranged cross plates 6 and two symmetrically arranged side plates 7 are slidably connected to the surface of the support plate 4. The cross plates 6 and the side plates 7 form a rectangular structure. The detection table 5 is located at the center of the rectangular structure. A plurality of moving components are fixedly connected to the surface of the support plate 4. Moving components are connected to one side of the two cross plates 6 and the two side plates 7 away from the detection table 5.

[0039] As a preferred technical solution of the present invention, each moving component includes a fixed block 8. A telescopic groove 9 is formed in the fixed block 8. A moving plate 10 is slidably connected in the telescopic groove 9. One side of the moving plate 10 close to the detection table 5 is fixedly connected with a connecting rod 11. One side of each cross plate 6 and the side plate 7 is fixedly connected with the connecting rod 11 closest to it. A return spring 37 is fixedly connected in the telescopic groove 9. The other end of the return spring 37 is fixedly connected with the side of the moving plate 10 away from the connecting rod 11. One side of the fixed block 8 close to the detection table 5 is fixedly connected with an air duct 12. The air duct 12 is communicated with the telescopic groove 9. The other end of the air duct 12 penetrates through the support plate 4 and enters the moving groove 3. The bottom surface of the support plate 4 is fixedly connected with a sub-airbag 13. One end of each air duct 12 located in the moving groove 3 is fixedly connected with the outer wall of the sub-airbag 13. The bottom surface of the sub-airbag 13 is fixedly connected with an air inlet pipe 14. The other end of the air inlet pipe 14 is connected with an air inlet component.

[0040] In the explosion-proof test equipment for the metal shell of the new energy battery in the present invention, during the explosion-proof test, the staff puts the metal shell of the new energy battery on the outside of the detection table 5, and then starts the main body 1 of the equipment for detection. At this time, the air outlet on the surface of the detection table 5 will continuously introduce the high-pressure gas from the external air source into the metal shell until the metal shell cracks. At this time, the explosion-proof test of the metal shell is completed. The staff records the data. Then, the staff uses the air inlet component to introduce the high-pressure gas from the external air source into the sub-airbag 13 through the air inlet pipe 14, and then enters the telescopic groove 9 through the air duct 12 connected to the sub-airbag 13. After the high-pressure gas enters the telescopic groove 9, it will push the moving plate 10 to move towards the side away from the detection table 5. The moving plate 10 will then drive the cross plate 6 and the side plate 7 to move through the connecting rod 11, so that the cross plate 6 and the side plate 7 are separated from the metal shell. Then, the staff starts the ejecting mechanism, and the ejecting mechanism will extend, so as to lift the metal shell. Then, the staff can remove the metal shell, observe the cracks and test marks on the metal shell, and reinstall the metal shell required for the next test on the detection table 5. At this time, under the push of the return spring 37, the moving plate 10 will move towards the detection table 5, and then drive the cross plate 6 and the side plate 7 to move to fit against the outer wall of the metal shell and form a rectangular structure, becoming the fixing mold of the metal shell;

[0041] By using the moving component to move the cross plate 6 and the side plate 7, it can be ensured that during the removal of the metal shell, the metal shell will not come into contact with the cross plate 6 and the side plate 7, thus avoiding the wear on the inner sides of the cross plate 6 and the side plate 7 when the expanded metal shell is removed due to the detection, improving the service life of the fixing mold formed by the cross plate 6 and the side plate 7, and at the same time reducing the resistance during the removal of the metal shell and improving the test experience of the staff.

[0042] As a preferred technical solution of the present invention, both sides of the support plate 4 are fixedly connected with a rotating rod 15, the rotating rod 15 is rotatably connected to the inner wall of the moving groove 3, the support plate 4 is located in the moving groove 3, and the inner side of the bottom surface of the moving groove 3 is fixedly connected with a fixed column 16, a lifting groove 17 is provided in the fixed column 16, a piston 18 is slidably connected in the lifting groove 17, a push rod 19 is fixedly connected to the surface of the piston 18, and the top of the push rod 19 is in contact with the bottom surface of the support plate 4, and two symmetrically arranged support springs 25 are fixedly connected to the side of the bottom surface of the moving groove 3 away from the fixed column 16, and the top of the support spring 25 is fixedly connected to the bottom surface of the support plate 4, a positioning plate 26 is fixedly connected to the front side of the bottom of the detection chamber 2, and the surface of the support plate 4 is in contact with the bottom surface of the positioning plate 26, and a ventilation pipe 20 connected to the lifting groove 17 is fixedly connected to the outer wall of the fixed column 16, and the other end of the ventilation pipe 20 is connected to the air intake assembly.

[0043] Specifically, when the air intake assembly introduces the high-pressure gas into the airbag 13, the high-pressure gas will simultaneously enter the ventilation pipe 20, and then enter the lifting groove 17 through the ventilation pipe 20. The high-pressure gas will push the piston 18 in the lifting groove 17 to rise, thereby driving the push rod 19 to rise. When the push rod 19 rises, the top end will squeeze the bottom surface of the support plate 4, causing the support plate 4 to rotate around the rotating rod 15, and the support plate 4 will tilt toward the operating direction of the staff, so that the test platform 5 and the metal shell can be in a tilted state that is more convenient for the staff to operate. After the support plate 4 is tilted, the staff can see the various parts of the metal shell and the test platform 5 more clearly, which is convenient for the staff to install and disassemble the metal shell and improve the staff's testing efficiency; after the metal shell is installed, the air intake assembly stops supplying gas. At this time, under the pressure of the support spring 25, the support plate 4 will return to a horizontal state, and the positioning plate 26 can ensure that the support plate 4 remains horizontal, thereby ensuring the stability of the explosion-proof test.

[0044] As a preferred technical solution of the present invention, two symmetrically arranged connecting blocks 27 are fixedly connected to the surface of the support plate 4, and the two connecting blocks 27 are inclined toward the detection table 5. Air guide grooves 30 are provided in the two connecting blocks 27, and an air duct 28 is fixedly connected between the two connecting blocks 27. The two ends of the air duct 28 are respectively connected to an air guide groove 30, and a connecting pipe 29 is fixedly connected to the middle of the air duct 28. A jet sleeve 31 is fixedly connected to the side of the connecting block 27 facing the detection table 5, and the jet sleeve 31 is connected to the air guide groove 30. A slide groove 32 is provided on one side of the equipment body 1, and the slide groove 32 is located below the positioning plate 26. A collection box 33 is slidably connected in the slide groove 32, and the other end of the connecting pipe 29 is connected to the air intake assembly.

[0045] Specifically, when the support plate 4 is in an inclined state, the air intake assembly uses the connecting pipe 29 to supply high-pressure gas to the air guiding pipe 28. The high-pressure gas enters the two air guiding grooves 30 through the air guiding pipe 28 and is then ejected by the two jet sleeves 31. The high-pressure air flow ejected by the jet sleeves 31 flows from top to bottom through the inclined surface of the support plate 4, taking away the debris generated during the metal shell test on the surface of the support plate 4 and blowing it into the collection box 33. By using the inclined design of the support plate 4 and the cooperation of the jet sleeves 31, automatic cleaning of the test debris is achieved, reducing the need for manual cleaning, improving work efficiency, keeping the internal environment of the detection cavity 2 clean, facilitating subsequent tests, and also contributing to the long-term maintenance and servicing of the equipment. After testing for a period of time, the staff can pull out the collection box 33 from the outside of the equipment main body 1 to centrally process the test debris in the collection box 33.

[0046] As a preferred technical solution of the present invention, the air intake assembly includes a gas distribution block 21. The gas distribution block 21 is fixedly connected to the bottom surface of the moving groove 3. One side of the gas distribution block 21 is fixedly connected with an air inlet pipe 22. The other end of the air inlet pipe 22 penetrates through the equipment main body 1 and is fixedly connected to an external air source. Three electric valves 23 are fixedly connected to the outer wall of the gas distribution block 21. The air inlet pipe 22 is communicated with the three electric valves 23. The ventilation pipe 20 is fixedly connected to one of the electric valves 23. The air inlet pipe 14 is fixedly connected to the end of the ventilation pipe 20 close to the electric valve 23. The connecting pipe 29 is fixedly connected to another electric valve 23. The last electric valve 23 is fixedly connected with an exhaust pipe 24.

[0047] Specifically, after the metal shell test is completed, the electric valve 23 connected to the ventilation pipe 20 is opened, and the other two electric valves 23 are closed. Subsequently, the high-pressure gas from the external air source enters the gas distribution block 21 through the air inlet pipe 22, and then enters the ventilation pipe 20 through the electric valve 23. After passing through the ventilation pipe 20 and the air inlet pipe 14, it simultaneously drives the moving plate 10 and the piston 18 to move, thereby realizing the outward movement of the cross plate 6 and the side plate 7 and the inclination of the support plate 4. After taking away the metal shell, the electric valve 23 connected to the connecting pipe 29 is opened. At this time, the high-pressure gas enters the air guiding pipe 28 and is ejected by the jet sleeves 31 to clean the test debris. After cleaning and installing a new metal shell to be tested, all the electric valves 23 are opened, and the external air source stops supplying gas. At this time, the gas in the telescopic groove 9, the air bag 13 and the lifting groove 17 will be discharged through the exhaust pipe 24. Subsequently, under the push of the reset spring 37 and the support spring 25, the cross plate 6 and the side plate 7 are closed again to form a fixed mold, and at the same time the support plate 4 will also return to the horizontal state. Then the equipment main body 1 can be started for the next test. Through the air intake assembly, effective control of each step in the disassembly and assembly process of the metal shell is achieved, ensuring the automation and high efficiency of the system, improving work efficiency and operation safety.

[0048] As a preferred technical solution of the present invention, a partition belt 35 is fixedly connected between the support plate 4 and the bottom surface of the moving groove 3, and the partition belt 35 is attached to the side of the collection box 33 close to the detection table 5.

[0049] Specifically, the partition belt 35 can prevent the test debris brought into the collection box 33 by the high-pressure air flow from contacting other components such as the support spring 25, the air bag 13, and the fixing column 16, ensuring that the test debris stays in the collection box 33 and does not scatter to other positions inside the device main body 1. This not only helps to keep the inside of the device clean but also simplifies the subsequent cleaning work.

[0050] As a preferred technical solution of the present invention, two symmetrically arranged reinforcement plates 36 are fixedly connected to each side of the cross plate 6 and the side plate 7 away from the detection table 5, and the bottom surface of the reinforcement plate 36 is attached to the surface of the support plate 4.

[0051] Specifically, the reinforcement plate 36 can improve the load-bearing capacity of the upper part of the cross plate 6 and the side plate 7, remain stable under more demanding test conditions, and is not easily deformed, which helps to ensure the accuracy of the test results. The reinforcement plate 36 can improve the overall structural strength of the cross plate 6 and the side plate 7, helps to prevent the cross plate 6 and the side plate 7 from bending or being damaged under external forces, extends their service life, and reduces the maintenance frequency and cost.

[0052] As a preferred technical solution of the present invention, the air outlet end of the air jet sleeve 31 is inclined towards the middle of the surface of the support plate 4, and the bottom surface of the positioning plate 26 close to the detection table 5 is provided with an inclined surface.

[0053] Specifically, the setting that the air outlet end of the air jet sleeve 31 is inclined towards the middle of the surface of the support plate 4 can ensure that the ejected high-pressure air flow stably flows along the surface of the support plate 4, ensuring that the high-pressure gas can act more directly and concentratedly on the area where debris is likely to accumulate on the surface of the support plate 4. This directional spraying can produce a stronger cleaning effect and effectively remove all residues generated during the test; the bottom surface of the positioning plate 26 close to the detection table 5 adopts an inclined surface design, which helps to guide the debris blown off from the surface of the support plate 4 to smoothly slide into the collection box 33, preventing the debris from accumulating or rebounding back onto the support plate 4 below the positioning plate 26 and ensuring the smooth flow of the high-pressure air flow.

[0054] As a preferred technical solution of the present invention, a handle 34 is fixedly connected to the side of the collection box 33 located outside the device main body 1.

[0055] Specifically, the handle 34 enables the staff to conveniently grasp and pull out the collection box 33, making it more convenient and labor-saving for the staff to extract or push back the collection box 33.

[0056] As a preferred technical solution of the present invention, the top of the push rod 19 is provided with a dome.

[0057] Specifically, the top of the push rod 19 adopts a dome structure with a smooth surface and no obvious edges and corners, which can provide a uniform pressure distribution when contacting the bottom surface of the support plate 4, while reducing friction and wear, avoiding surface damage or deformation caused by long-term use, and thus extending the service life of the push rod 19 and the support plate 4.

[0058] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof testing device for a metal shell of a new energy battery, characterized in that, It includes a device main body (1). A detection cavity (2) is arranged inside the device main body (1). A detection table (5) is installed inside the detection cavity (2). An air outlet and an ejection mechanism for explosion-proof testing are arranged on the surface of the detection table (5). A moving groove (3) is formed on the bottom surface of the detection cavity (2). A support plate (4) is installed on the bottom surface of the detection cavity (2). The detection table (5) is fixedly connected to the surface of the support plate (4). Two symmetrically arranged cross plates (6) and two symmetrically arranged side plates (7) are slidably connected to the surface of the support plate (4). The cross plates (6) and the side plates (7) form a rectangular structure. The detection table (5) is located at the center of the rectangular structure. A plurality of moving components are fixedly connected to the surface of the support plate (4). Moving components are connected to the sides of the two cross plates (6) and the two side plates (7) away from the detection table (5).

2. The explosion-proof test equipment for the metal shell of a new energy battery according to claim 1, characterized in that, Each moving component includes a fixed block (8). A telescopic groove (9) is formed inside the fixed block (8). A moving plate (10) is slidably connected inside the telescopic groove (9). A connecting rod (11) is fixedly connected to the side of the moving plate (10) close to the detection table (5). One side of each cross plate (6) and side plate (7) is fixedly connected to the connecting rod (11) closest to it. A return spring (37) is fixedly connected inside the telescopic groove (9). The other end of the return spring (37) is fixedly connected to the side of the moving plate (10) away from the connecting rod (11). A guide air pipe (12) is fixedly connected to the side of the fixed block (8) close to the detection table (5). The guide air pipe (12) is communicated with the telescopic groove (9). The other end of the guide air pipe (12) penetrates through the support plate (4) and enters the moving groove (3). An air distribution balloon (13) is fixedly connected to the bottom surface of the support plate (4). One end of each guide air pipe (12) located in the moving groove (3) is fixedly connected to the outer wall of the air distribution balloon (13). An air inlet pipe (14) is fixedly connected to the bottom surface of the air distribution balloon (13). The other end of the air inlet pipe (14) is connected to an air inlet component.

3. The explosion-proof test equipment for the metal shell of a new energy battery according to claim 2, wherein, Both sides of the support plate (4) are fixedly connected with rotating rods (15). The rotating rods (15) are rotatably connected to the inner wall of the moving groove (3). The support plate (4) is located in the moving groove (3). The inner side of the bottom surface of the moving groove (3) is fixedly connected with a fixed column (16). A lifting groove (17) is formed in the fixed column (16). A piston (18) is slidably connected in the lifting groove (17). The surface of the piston (18) is fixedly connected with a push rod (19). The top end of the push rod (19) is in contact with the bottom surface of the support plate (4). On the side of the bottom surface of the moving groove (3) far from the fixed column (16), two symmetrically arranged support springs (25) are fixedly connected. The top ends of the support springs (25) are fixedly connected with the bottom surface of the support plate (4). The front side of the bottom surface of the detection cavity (2) is fixedly connected with a positioning plate (26). The surface of the support plate (4) is in contact with the bottom surface of the positioning plate (26). The outer wall of the fixed column (16) is fixedly connected with an air pipe (20) communicating with the lifting groove (17). The other end of the air pipe (20) is connected to the air intake assembly.

4. An explosion-proof test device for a metal shell of a new energy battery according to claim 3, characterized in that, Two symmetrically arranged connecting blocks (27) are fixedly connected to the surface of the support plate (4). Both of the two connecting blocks (27) are inclined towards the detection table (5). Air guide grooves (30) are formed in both of the two connecting blocks (27). An air guiding pipe (28) is fixedly connected between the two connecting blocks (27). The two ends of the air guiding pipe (28) are respectively communicated with an air guide groove (30). A connecting pipe (29) is fixedly connected to the middle of the air guiding pipe (28). On the side of the connecting block (27) towards the detection table (5), an air jet sleeve (31) is fixedly connected. The air jet sleeve (31) is communicated with the air guide groove (30). A sliding groove (32) is formed on one side of the equipment main body (1). The sliding groove (32) is located below the positioning plate (26). A collection box (33) is slidably connected in the sliding groove (32). The other end of the connecting pipe (29) is connected to the air intake assembly.

5. An explosion-proof test device for a metal shell of a new energy battery according to claim 4, characterized in that, The air intake assembly includes a gas distribution block (21). The gas distribution block (21) is fixedly connected to the bottom surface of the moving groove (3). An air inlet pipe (22) is fixedly connected to one side of the gas distribution block (21). The other end of the air inlet pipe (22) penetrates through the equipment main body (1) and is fixedly connected to an external air source. Three electric valves (23) are fixedly connected to the outer wall of the gas distribution block (21). The air inlet pipe (22) is communicated with the three electric valves (23). The air pipe (20) is fixedly connected to one of the electric valves (23). The air inlet pipe (14) is fixedly connected to the end of the air pipe (20) close to the electric valve (23). The connecting pipe (29) is fixedly connected to another electric valve (23). The last electric valve (23) is fixedly connected with an exhaust pipe (24).

6. The explosion-proof test equipment for a new energy battery metal shell according to claim 5, characterized in that, A partition belt (35) is fixedly connected between the support plate (4) and the bottom surface of the moving groove (3). The partition belt (35) is in contact with the side of the collection box (33) close to the detection table (5).

7. An explosion-proof test device for a metal shell of a new energy battery according to claim 6, characterized in that, Two symmetrically arranged reinforcing plates (36) are fixedly connected to the side of each of the cross plates (6) and the side plates (7) away from the detection table (5), and the bottom surface of the reinforcing plate (36) is in contact with the surface of the support plate (4).

8. An explosion-proof test device for a metal shell of a new energy battery according to claim 7, characterized in that, The air outlet end of the air jet sleeve (31) is inclined towards the middle of the surface of the support plate (4), and the bottom surface of the positioning plate (26) on the side close to the detection table (5) is provided with an inclined surface.

9. The explosion-proof test equipment for the metal shell of a new energy battery according to claim 8, characterized in that, A handle (34) is fixedly connected to the side of the collection box (33) outside the equipment main body (1).

10. The explosion-proof test equipment for the metal shell of a new energy battery according to claim 9, characterized in that, The top of the push rod (19) is provided with a dome.

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