A waste lithium battery puncture device and a method of using the same

Abstract

The application provides a kind of waste lithium battery puncture device and its using method, it is related to lithium battery puncture experimental field, including puncture cabin, the upper surface of puncture cabin is equipped with three-axis moving platform, the bottom of the vertical moving arm of puncture cabin is equipped with puncture needle, the surface including puncture cabin is provided with fixed sleeve and first sliding sleeve, the side of first sliding sleeve is provided with first air bag, the surface of puncture cabin is provided with two groups of sealing leather roll, each group of sealing leather roll is symmetrically arranged, the part of adjacent two sealing leather rolls in the interior of puncture cabin is tightly fitted, the vertical moving arm surface of three-axis moving platform is provided with restraint sliding block, the end of sealing leather roll is provided with C-shaped rod, the puncture environment of waste lithium battery is protected by multiple sealing, dynamic pressure relief and inert gas cooperation in the application, to improve the security of waste lithium battery puncture environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lithium battery puncture experiments, in particular to a waste lithium battery puncture device and a use method thereof. BACKGROUND

[0002] With the rapid development of the new energy industry, the recycling and tier utilization of waste lithium batteries have become a key technical link in global energy transformation. In the battery recycling process, the puncture device, as the core equipment for evaluating the safety performance of the battery, needs to simulate extreme working conditions such as internal short circuit and thermal runaway of the battery, and accurately obtain data such as battery rupture mode, gas release characteristics and thermal spread law, to provide a scientific basis for battery recycling process optimization. However, during the puncture of the lithium battery, the internal electrolyte, lithium metal and active substances will instantaneously release a large amount of high-temperature and high-pressure gas.

[0003] The sharp increase in internal pressure of the device caused by the leakage of high-pressure gas during the puncture of the waste lithium battery (such as a ternary lithium battery) is usually maintained by a pressure relief valve to balance the gas pressure inside the device. However, the pressure relief valve can only be opened passively when the internal pressure of the device exceeds the set value, and it is difficult to actively intervene in the rapid accumulation of high-pressure gas, which increases the risk of deflagration. Moreover, the pressure relief valve can cause the gas flow path inside the device to be single, which can easily form a local high-pressure area and a pressure dead zone, thereby intensifying the electrolyte atomization, increasing the temperature gradient, and accelerating the spread of thermal runaway. In addition, the valve threshold of the pressure relief valve is fixed, and it is difficult to adjust the pressure relief strategy according to different types of lithium batteries or working conditions. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a waste lithium battery puncture device that protects the puncture environment of the waste lithium battery by multiple sealing, dynamic pressure relief and inert gas cooperation, to improve the safety of the waste lithium battery puncture environment.

[0005] To solve the above technical problems, the technical solution of the present application is as follows:

[0006] A waste lithium battery puncture device, comprising a puncture cabin, a three-axis moving table is installed on the upper surface of the puncture cabin, and a puncture needle is installed at the bottom of the vertical moving arm of the puncture cabin, comprising:

[0007] A fixed sleeve and a first sliding sleeve are arranged on the surface of the puncture cabin, the first sliding sleeve moves inside the fixed sleeve to slow down the change of the pressure in the puncture cabin, a first air bag is arranged on one side of the first sliding sleeve, and the first air bag is compressed by the movement of the first sliding sleeve to inject inert gas inside the first air bag into the puncture cabin;

[0008] The surface of the puncture cabin is provided with two groups of sealing leather rolls, each group of sealing leather rolls is symmetrically arranged, and the parts of the two adjacent sealing leather rolls inside the puncture cabin are tightly fitted, the vertical moving arm surface of the three-axis moving table is provided with a constraint sliding block, the end of the sealing leather roll is provided with a C-shaped rod, and the sliding fit of the constraint sliding block and the C-shaped rod enables the three-axis moving table to drive the sealing leather roll to move, and the area below the four sealing leather rolls and the area above the four sealing leather rolls inside the puncture cabin remain sealed.

[0009] Further, the surface of the puncture cabin is fixedly connected with a second fixed block, the two sides of the second fixed block are symmetrically provided with a first fixed block and a third fixed block, the fixed sleeve is fixedly connected in a first circular groove opened on the surface of the first fixed block, the first sliding sleeve is slidingly connected in the inside of the fixed sleeve, the end of the first sliding sleeve is provided with a first moving block, the first sliding sleeve is fixedly connected in a second circular groove opened on the surface of the first moving block, the first air bag is fixedly connected in a third circular groove opened on the surface of the third fixed block, the end of the first air bag away from the third fixed block is provided with a second moving block, the end of the first air bag is fixedly connected to the surface of the second moving block, a plurality of constraint sliding rods are fixedly connected between the third fixed block and the first fixed block, the constraint sliding rods are respectively fixedly connected in corresponding first through holes opened on the surface of the second fixed block, and the first moving block and the second moving block are respectively slidingly connected with corresponding constraint sliding rods through corresponding second through holes opened on the surfaces.

[0010] Further, the inside of the puncture cabin is fixedly connected with a C-shaped gas collecting shell, a gas distribution bucket is fixedly connected in a first rectangular groove opened on the surface of the C-shaped gas collecting shell, the first fixed block is in communication with the inside of the C-shaped gas collecting shell, a fourth circular groove is opened on the surface of the gas distribution bucket, a first electromagnetic valve is installed in the fourth circular groove, a fifth circular groove is opened on the surface of the first sliding sleeve, a sleeve pipe is fixedly connected in the fifth circular groove, a first spring is arranged on the surface of the sleeve pipe, a plug is arranged at the end of the sleeve pipe, and the two ends of the sleeve pipe are fixedly connected with the first sliding sleeve and the plug.

[0011] Further, the first mobile block and the first fixed block are provided with a plurality of third springs, both ends of the third spring are fixedly connected with the first fixed block and the first mobile block respectively, a plurality of connecting rods are symmetrically arranged between the second mobile block and the first mobile block, the connecting rods are fixedly connected with the second mobile block and the first mobile block, the surface of the puncture cabin is fixedly connected with an air pressure adjusting box, a seventh circular groove and an eighth circular groove are arranged on the surface of the air pressure adjusting box, and a first one-way valve and a second one-way valve are respectively arranged in the seventh circular groove and the eighth circular groove, and the first air bag is connected with the inside of the air pressure adjusting box through a pipeline.

[0012] Further, the end of the vertical moving arm of the three-axis moving table is fixedly connected with a protective bucket, the bottom surface of the protective bucket is fixedly connected with an air outlet ring, and the air outlet ring is connected with the air outlet of the first one-way valve through a pipeline.

[0013] Further, the surface of the C-shaped gas collecting shell is uniformly provided with a ventilation circular hole, and the inside of the C-shaped gas collecting shell is provided with a T-shaped baffle plate near the ventilation circular hole, the surface of the T-shaped baffle plate is slidably connected with a second sliding sleeve, the inside of the second sliding sleeve is provided with a second spring, and both ends of the second spring are fixedly connected with the T-shaped baffle plate and the second sliding sleeve.

[0014] Further, the inside of the constraint sliding block is fixedly connected with a sealing sleeve, the constraint sliding block is slidably connected with the vertical moving arm of the three-axis moving table through the sealing sleeve, the surface of the constraint sliding block is symmetrically provided with two groups of constraint sliding grooves, the C-shaped rod is slidably connected with the constraint sliding block through the corresponding constraint sliding groove, and the inner wall surface of the puncture cabin is symmetrically fixedly connected with two groups of constraint sliding rails.

[0015] Further, the surface of the sealing leather roll is symmetrically rotatably connected with a fixed support, the fixed support is fixedly connected with the puncture cabin, one end of the sealing leather roll winding shaft is provided with a winding spring box, the winding spring box is fixedly connected with the corresponding fixed support, the inside of the winding spring box is provided with a reset winding spring, one end of the reset winding spring is fixedly connected with the sealing leather roll winding shaft, and the other end of the reset winding spring is fixedly connected with the winding spring box.

[0016] Further, the four vertical surfaces of the puncture cabin are provided with strip-shaped grooves, and the inner wall surface of the strip-shaped groove and the inner wall surface of the puncture cabin are in contact with the surface of the sealing leather roll.

[0017] Further, a puncture method for waste lithium batteries specifically comprises the following steps:

[0018] Step one, puncture the sealing door of the cabin surface, put the waste lithium battery fixed by the clamp into the inside of the puncture cabin and fix, close the sealing door;

[0019] Step two, move the vertical moving arm of the three-axis moving table to the set position, drive the puncture needle to puncture the waste lithium battery through the lifting of the vertical moving arm of the three-axis moving table;

[0020] Step three, when the vertical moving arm moves horizontally in step two, the constraint slider on the surface of the vertical moving arm slides relative to the two mutually parallel C-shaped rods, and drives the other two mutually parallel C-shaped rods to move, in the process of moving of the C-shaped rod, the sealing skin extends to the inside of the puncture cabin or is rolled up by the rolling shaft of the sealing skin under the elastic potential energy of the reset coil spring, when the vertical moving arm of the three-axis moving table moves vertically, the sealing sleeve in the constraint slider keeps the air tightness between the lower part and the upper part of the constraint slider in the puncture cabin through the vertical moving arm of the three-axis moving table;

[0021] Step four, when high-pressure gas leaks during the puncture process of the waste lithium battery in step two, when the air pressure value in the puncture cabin exceeds the set value, the C-shaped gas collecting shell in the puncture cabin is extruded into the inside of the second sliding sleeve through the action of the air pressure difference, so that the gas in the puncture cabin enters the C-shaped gas collecting shell, and then enters the fixed sleeve through the gas distribution bucket, the air pressure in the fixed sleeve rises to make the first sliding sleeve move towards the second fixed block, and the second moving block is pushed to compress the first air bag through the connecting rod, so that the inert gas in the first air bag enters the inside of the puncture cabin, when the plug pipe is inserted into the inside of the sleeve pipe and the plug is separated from the sleeve by overcoming the elastic potential energy of the first spring, the gas in the first sliding sleeve is discharged through the first cavity in the second fixed block.

[0022] The above-mentioned scheme of the present application at least has the following beneficial effects:

[0023] The above-mentioned scheme of the present application, through the cooperation between the first sliding sleeve and the first air bag, makes the increase of the pressure in the puncture cabin slow down during the puncture process of the waste lithium battery, and the inert gas enters the puncture cabin in time to dilute and cool the flammable and harmful high-pressure gas;

[0024] Through the setting of the protection bucket, the flammable and harmful high-pressure gas is dispersed and guided, and the possibility of local temperature rising and explosion is reduced;

[0025] The puncture area of the lithium battery in the puncture cabin is kept in good air tightness with the cooperation of four groups of sealing skin rolls, C-shaped rods, constraint sliding blocks and sealing sleeves and the like, meanwhile, the deformation of the sealing skin roll can be utilized to deform under the high pressure in the puncture cabin to expand the volume in the puncture cabin, thus passive pressure relief is realized and the structural damage of the device is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure provided by the present application.

[0027] Figure 2 is a schematic diagram of the sealing skin roll in the present application.

[0028] Figure 3 is a schematic diagram of the air pressure adjusting box in the present application.

[0029] Figure 4 is a schematic diagram of the C-shaped rod in the present application.

[0030] Figure 5 is an enlarged view of A in the present application. Figure 4

[0031] Figure 6 is a schematic diagram of the constraint sliding rail in the present application.

[0032] Figure 7 is a schematic diagram of the first spring in the present application.

[0033] Figure 8 is a schematic diagram of the protective hopper in the present application.

[0034] Figure 9 is an enlarged view of B in the present application. Figure 6

[0035] is an enlarged view of C in the present application. Figure 10 Figure 4

[0036] In the figure: 101, puncture cabin; 102, three-axis moving table;

[0037] ​​​201, C-shaped gas collecting shell; 202, gas distribution bucket; 203, first fixing block; 204, fixing sleeve; 205, first sliding sleeve; 206, first moving block; 207, second fixing block; 208, third fixing block; 209, constraint sliding rod; 210, second moving block; 211, connecting rod; 212, plug pipe; 213, sleeve pipe; 214, plug; 215, first spring; 216, first air bag; 217, protective bucket; 218, gas outlet ring; 219, gas pressure adjusting box; 220, first one-way valve; 221, second one-way valve; 222, first electromagnetic valve; 223, third one-way valve; 224, T-shaped plug plate; 225, second sliding sleeve; 226, second spring; 227, third spring;

[0038] 301, fixing support; 302, sealing leather roll; 303, coil spring box; 304, strip-shaped groove; 305, constraint sliding rail; 306, C-shaped rod; 307, constraint sliding block; 308, constraint sliding groove; 309, sealing sleeve; 3031, reset coil spring. DETAILED DESCRIPTION

[0039] Exemplary embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be accurately conveyed to those skilled in the art.

[0040] As Figures 1 to 10 shown, the embodiment of the present application proposes a waste lithium battery puncture device, comprising a puncture cabin 101, a three-axis moving table 102 is installed on the upper surface of the puncture cabin 101, a puncture needle is installed at the bottom of the vertical moving arm of the puncture cabin 101, comprising:

[0041] The surface of the puncture cabin 101 is provided with a fixing sleeve 204 and a first sliding sleeve 205, the first sliding sleeve 205 moves inside the fixing sleeve 204 to slow down the pressure change inside the puncture cabin 101, one side of the first sliding sleeve 205 is provided with a first air bag 216, the first air bag 216 is compressed by the movement of the first sliding sleeve 205, so that the inert gas inside the first air bag 216 is injected into the puncture cabin 101;

[0042] The surface of the puncture cabin 101 is provided with two groups of sealing skin rolls 302, each group of sealing skin rolls 302 is symmetrically arranged, and the parts of the adjacent two sealing skin rolls 302 located inside the puncture cabin 101 are tightly fitted, the vertical moving arm surface of the three-axis moving table 102 is provided with a constraint sliding block 307, and the end of the sealing skin roll 302 is provided with a C-shaped rod 306. Through the sliding cooperation of the constraint sliding block 307 and the C-shaped rod 306, when the three-axis moving table 102 drives the sealing skin roll 302 to move, the area below the four sealing skin rolls 302 and the area above the four sealing skin rolls 302 in the puncture cabin 101 are kept sealed.

[0043] In the embodiment of the application, when the waste lithium battery is punctured, the waste lithium battery is clamped and fixed in the tray using the corresponding clamp, the tray is placed in the inside of the puncture cabin 101, and the tray is in contact with the inner wall of the puncture cabin 101 and the sealing door of the puncture cabin 101 at the same time, so that the waste lithium battery remains relatively stable during the puncture process.

[0044] When the high-pressure gas in the waste lithium battery leaks during the puncture process, the pressure in the puncture cabin 101 instantaneously rises, and part of the airflow in the puncture cabin 101 enters the inside of the fixed sleeve 204 through the relative sliding between the fixed sleeve 204 and the first sliding sleeve 205, so as to slow down the rise of the air pressure in the puncture cabin 101. At the same time, the elongation deformation between the fixed sleeve 204 and the first sliding sleeve 205 drives the first air bag 216 to compress, so that the inert gas in the first air bag 216 enters the inside of the puncture cabin 101, so as to further dilute the flammable and harmful gas in the puncture cabin 101.

[0045] The four sealing skin rolls 302 are arranged to be perpendicular to each other, and the sealing skin rolls 302 are synchronously stretched and contracted by the movement of the C-shaped rod 306 and the constraint sliding block 307, so that the inside of the puncture cabin 101 is divided into two parts that are not connected in the upper and lower directions by the four sealing skin rolls 302, the C-shaped rod 306, the constraint sliding block 307, the sealing sleeve 309 and the vertical moving arm of the three-axis moving table 102.

[0046] The surface of the puncture cabin 101 is fixedly connected with a second fixed block 207, the two sides of the second fixed block 207 are symmetrically provided with a first fixed block 203 and a third fixed block 208, a fixed sleeve 204 is fixedly connected in a first circular groove opened on the surface of the first fixed block 203, a first sliding sleeve 205 is slidingly connected in the interior of the fixed sleeve 204, the end of the first sliding sleeve 205 is provided with a first moving block 206, the first sliding sleeve 205 is fixedly connected in a second circular groove opened on the surface of the first moving block 206, a first air bag 216 is fixedly connected in a third circular groove opened on the surface of the third fixed block 208, the end, away from the third fixed block 208, of the first air bag 216 is provided with a second moving block 210, the end of the first air bag 216 is fixedly connected to the surface of the second moving block 210, a plurality of constraint slide rods 209 are fixedly connected between the third fixed block 208 and the first fixed block 203, the constraint slide rods 209 are respectively fixedly connected in corresponding first through holes opened on the surface of the second fixed block 207, the first moving block 206 and the second moving block 210 are respectively slidingly connected with corresponding constraint slide rods 209 through corresponding second through holes opened on the surfaces thereof.

[0047] A C-shaped gas collecting shell 201 is fixedly connected in the interior of the puncture cabin 101, a gas distribution bucket 202 is fixedly connected in a first rectangular groove opened on the surface of the C-shaped gas collecting shell 201, the gas distribution bucket 202 is fixedly connected in a first rectangular groove opened on the surface of the puncture cabin 101, the first fixed block 203 is in communication with the interior of the C-shaped gas collecting shell 201, a first electromagnetic valve 222 is mounted in a fourth circular groove opened on the surface of the gas distribution bucket 202, a sleeve pipe 213 is fixedly connected in a fifth circular groove opened on the surface of the first sliding sleeve 205, the surface of the sleeve pipe 213 is provided with a first spring 215, the end of the sleeve pipe 213 is provided with a plug 214, the two ends of the sleeve pipe 213 are respectively fixedly connected with the first sliding sleeve 205 and the plug 214, a plug pipe 212 is fixedly connected in a sixth circular groove opened on the surface of the second fixed block 207, a third check valve 223 is mounted on the surface of the second fixed block 207, the third check valve 223 is in communication with the interior of the plug pipe 212 through a first cavity opened in the interior of the second fixed block 207.

[0048] A plurality of third springs 227 are arranged between the first moving block 206 and the first fixed block 203, the two ends of the third springs 227 are respectively fixedly connected with the first fixed block 203 and the first moving block 206, a plurality of connecting rods 211 are symmetrically arranged between the second moving block 210 and the first moving block 206, the connecting rods 211 are fixedly connected with the second moving block 210 and the first moving block 206, a gas pressure adjusting box 219 is fixedly connected on the surface of the puncture cabin 101, a first check valve 220 and a second check valve 221 are respectively mounted in a seventh circular groove and an eighth circular groove opened on the surface of the gas pressure adjusting box 219, the first air bag 216 is in communication with the interior of the gas pressure adjusting box 219 through a pipeline.

[0049] In the embodiment of the present application, the increase of the air pressure inside the puncture cabin 101 makes part of the gas inside enter the inside of the C-shaped gas collecting shell 201, and pass through the gas distribution pot 202 and the first fixed block 203 to enter the inside of the fixed sleeve 204, the continuously increasing air pressure inside the fixed sleeve 204 pushes the first sliding sleeve 205 and the first moving block 206 to move towards the second fixed block 207;

[0050] When the air pressure inside the puncture cabin 101 is not enough to make the plug pipe 212 insert into the inside of the sleeve pipe 213, with the continuous discharge of the gas inside the puncture cabin 101 through the first electromagnetic valve 222 on the surface of the gas distribution pot 202, the first moving block 206 drives the first sliding sleeve 205 to reset under the action of the elastic potential energy of the third spring 227;

[0051] When the air pressure inside the puncture cabin 101 is enough to make the first sliding sleeve 205 drive the first moving block 206 to move towards the second fixed block 207, until the plug pipe 212 inserts into the inside of the sleeve pipe 213 and pushes the plug 214 away from the surface of the sleeve pipe 213, the plug 214 no longer blocks the sleeve pipe 213, so that the gas inside the first sliding sleeve 205 enters the first cavity inside the second fixed block 207 through the plug pipe 212, and is discharged through the third one-way valve 223 on the surface of the second fixed block 207;

[0052] In the embodiment, the external inert gas source device is connected to the inside of the gas inlet of the second one-way valve 221 through a pipeline, and the pressure sensor is installed in the inside of the air pressure adjusting box 219, so that the inert gas pressure inside the air pressure adjusting box 219 is always kept at a set interval value, the movement of the first moving block 206 drives the second moving block 210 to move along the surface of the constraint sliding rod 209 towards the direction of compressing the first air bag 216 through the connecting rod 211, the compression of the first air bag 216 makes the inert gas inside enter the inside of the air pressure adjusting box 219, and then enters the inside of the puncture cabin 101 through the first one-way valve 220, so as to further dilute the combustible and harmful gas inside the puncture cabin 101 and reduce the occurrence of deflagration;

[0053] When the first sliding sleeve 205 shrinks under the action of the elastic potential energy of the third spring 227, the first air bag 216 synchronously expands and absorbs the inert gas from the inside of the air pressure adjusting box 219 for storage, in the expansion process of the first air bag 216, the external inert gas source device continuously inputs the inert gas into the inside of the air pressure adjusting box 219 to keep the stability of the air pressure inside the air pressure adjusting box 219 in the process of the first air bag 216 absorbing the inert gas from the inside of the air pressure adjusting box 219 through the pipeline;

[0054] When the first air bag 216 is contracted, the inert gas is extruded into the inside of the gas pressure regulating box 219 through the pipeline, and is input into the inside of the puncture cabin 101 through the first one-way valve 220, the gas pressure value in the inside of the gas pressure regulating box 219 exceeds the set value, and the external inert gas source device no longer inputs the inert gas into the inside of the gas pressure regulating box 219;

[0055] When the set value of the gas pressure in the inside of the gas pressure regulating box 219 is lower than the opening pressure of the first one-way valve 220, the inert gas is only input into the inside of the puncture cabin 101 through the first one-way valve 220 when the first air bag 216 is contracted;

[0056] When the set value of the gas pressure in the inside of the gas pressure regulating box 219 is higher than the opening pressure of the first one-way valve 220, the first one-way valve 220 continuously and stably inputs the inert gas into the inside of the puncture cabin 101 when the first air bag 216 is not deformed, and the pressure in the inside of the gas pressure regulating box 219 rises when the first air bag 216 is compressed and deformed, and the external inert gas source device stops inputting the inert gas into the inside of the gas pressure regulating box 219.

[0057] It should be noted that the working principle and use method of the external inert gas source device and the pressure sensor are known in the prior art, and will not be described in detail here;

[0058] The end of the vertical moving arm of the three-axis moving table 102 is fixedly connected with a protective bucket 217, the bottom surface of the protective bucket 217 is fixedly connected with an air outlet ring 218, and the air outlet ring 218 is connected in communication with the inside of the air outlet of the first one-way valve 220 through a pipeline.

[0059] When the puncture position of the waste lithium battery sprays a high-pressure gas flow, the protective bucket 217 is located above the spraying position, the high-pressure gas flow is guided to multiple directions through the curved inner wall of the protective bucket 217, so as to reduce the sudden increase of the concentration of flammable and harmful gas in a certain area in the inside of the puncture cabin 101, and further to cause deflagration, the inert gas released by the air outlet ring 218 connected with the air outlet of the first one-way valve 220 through the pipeline is mixed with the harmful and flammable gas, so as to cool and dilute the harmful and flammable gas, and further to prevent the occurrence of deflagration.

[0060] The surface of the C-shaped gas collecting shell 201 is uniformly provided with a ventilation round hole, and the inside of the C-shaped gas collecting shell 201 is provided with a T-shaped blocking plate 224 near the position where the ventilation round hole is located, the surface of the T-shaped blocking plate 224 is slidingly connected with a second sliding sleeve 225, the inside of the second sliding sleeve 225 is provided with a second spring 226, and the two ends of the second spring 226 are fixedly connected with the T-shaped blocking plate 224 and the second sliding sleeve 225 respectively.

[0061] In the embodiment of the present application, when the inside of the puncture cabin 101 is at normal pressure, the ventilation round holes on the surface of the C-shaped gas collecting shell 201 are blocked by the T-shaped blocking plate 224, when the air pressure inside the puncture cabin 101 rises, the T-shaped blocking plate 224 moves in the inside of the second sliding sleeve 225 under the action of the air pressure inside the puncture cabin 101, and moves in the direction of overcoming the elastic potential of the second spring 226, so that the gas inside the puncture cabin 101 enters the inside of the C-shaped gas collecting shell 201, and then is discharged from the inside of the puncture cabin 101 through the gas distribution bucket 202, the C-shaped gas collecting shell 201 functions to make the gas inside the puncture cabin 101 pass through the C-shaped gas collecting shell 201 and the gas distribution bucket 202 to be discharged from the puncture cabin 101 more evenly.

[0062] The inside of the constraint sliding block 307 is fixedly connected with a sealing sleeve 309, the constraint sliding block 307 is slidingly connected with the vertical moving arm of the three-axis moving table 102 through the sealing sleeve 309, the surface of the constraint sliding block 307 is symmetrically provided with two groups of constraint sliding grooves 308, the C-shaped rod 306 is slidingly connected with the constraint sliding block 307 through the corresponding constraint sliding groove 308, and the inner wall surface of the puncture cabin 101 is fixedly connected with two groups of constraint sliding rails 305, and the C-shaped rod 306 is slidingly connected with the corresponding constraint sliding rail 305 through the clamping groove formed on the surface.

[0063] In the embodiment of the present application, the sealing sleeve 309 makes the vertical moving arm of the three-axis moving table 102 keep good sealing when moving in the vertical direction, the constraint sliding block 307 keeps the sealing between the constraint sliding block 307 and the C-shaped rod 306 when sliding on the surface of the C-shaped rod 306, the abutting and fitting between any adjacent sealing skin rolls 302 makes the adjacent sealing skin rolls 302 keep good sealing when relatively sliding, the clamping and sliding cooperation between the constraint sliding rail 305 and the C-shaped rod 306 makes the C-shaped rod 306 keep stable when following the constraint sliding block 307 to move, and then the inside of the puncture cabin 101 is divided into two parts that are not connected, by the four sealing skin rolls 302, the C-shaped rod 306, the constraint sliding block 307, the sealing sleeve 309 and the vertical moving arm of the three-axis moving table 102.

[0064] The surface of the winding shaft of the sealing skin roll 302 is symmetrically rotationally connected with a fixed support 301, the fixed support 301 is fixedly connected with the puncture cabin 101, one end of the winding shaft of the sealing skin roll 302 is provided with a winding spring box 303, the winding spring box 303 is fixedly connected with the corresponding fixed support 301, and the inside of the winding spring box 303 is provided with a reset winding spring 3031, one end of the reset winding spring 3031 is fixedly connected with the winding shaft of the sealing skin roll 302, and the other end of the reset winding spring 3031 is fixedly connected with the winding spring box 303.

[0065] The four vertical surfaces of the puncture cabin 101 are provided with a strip-shaped slot 304, and the inner wall surface of the strip-shaped slot 304 and the inner wall surface of the puncture cabin 101 are in contact with the surface of the sealing leather roll 302.

[0066] In the embodiment of the present application, the sealing leather roll 302 always has a tendency to roll back by the reset coil spring 3031 inside the coil spring box 303, so that the part of the sealing leather roll 302 inside the puncture cabin 101 is kept tight, thereby keeping good air tightness between the sealing leather roll 302 and between the sealing leather roll 302 and the puncture cabin 101;

[0067] When the air pressure inside the puncture cabin 101 rises sharply, a part of the gas inside the puncture cabin 101 is discharged from the C-shaped gas collecting shell 201, the gas distributor 202 and the first electromagnetic valve 222, and a part of the gas is discharged from the fixed sleeve 204, the first sliding sleeve 205, the second fixed block 207 and the third one-way valve 223. If the air pressure inside the puncture cabin 101 continues to rise, the sealing leather roll 302 will bend upward to overcome the elastic potential of the reset coil spring 3031, so that the volume of the part below the sealing leather roll 302 inside the puncture cabin 101 becomes larger, thereby slowing down or reducing the air pressure inside the puncture cabin 101;

[0068] The pipe openings of the first electromagnetic valve 222 and the third one-way valve 223 are connected with an external gas purification device or a gas collection device, so as to collect and process the gas inside the puncture cabin 101.

[0069] It should be noted that the working principle and use method of the external gas purification device or the gas collection device are known in the prior art, and will not be described in detail here.

[0070] A puncture method of waste lithium batteries, specifically comprising the following steps:

[0071] Step one, the sealing door on the surface of the puncture cabin 101, the waste lithium battery fixed by the clamp is put into the inside of the puncture cabin 101 and fixed, and the sealing door is closed;

[0072] Step two, move the vertical moving arm of the three-axis moving table 102 to the set position, drive the puncture needle to puncture the waste lithium battery through the lifting of the vertical moving arm of the three-axis moving table 102;

[0073] Step three, when the vertical moving arm moves horizontally in step two, the constraint slider 307 on the surface of the vertical moving arm slides relative to two mutually parallel C-shaped rods 306, and drives the other two mutually parallel C-shaped rods 306 to move. During the movement of the C-shaped rods 306, the sealing skin roll 302 extends towards the inside of the puncture cabin 101 under the cooperation of the elastic potential energy of the reset winding spring 3031 inside the winding spring box 303, or is wound by the winding shaft of the sealing skin roll 302 under the action of the elastic potential energy of the reset winding spring 3031. When the vertical moving arm of the three-axis moving table 102 moves vertically, the sealing sleeve 309 inside the constraint slider 307 keeps the air tightness between the lower part and the upper part of the constraint slider 307 inside the puncture cabin 101 relative to the vertical moving arm of the three-axis moving table 102.

[0074] Step four, when high-pressure gas leaks during the puncture process of the waste lithium battery in step two, when the air pressure value inside the puncture cabin 101 exceeds the set value, the C-shaped gas collecting shell 201 inside the puncture cabin 101 is extruded into the inside of the second sliding sleeve 225 by the action of the air pressure difference, so that the gas inside the puncture cabin 101 enters the C-shaped gas collecting shell 201, and then enters the inside of the fixed sleeve 204 through the gas distribution bucket 202. The air pressure in the inside of the fixed sleeve 204 rises to make the first sliding sleeve 205 move towards the second fixed block 207, and the second moving block 210 is pushed by the connecting rod 211 to compress the first air bag 216, so that the inert gas in the inside of the first air bag 216 enters the inside of the puncture cabin 101. When the plug pipe 212 is inserted into the inside of the sleeve pipe 213 and the plug 214 is separated from the sleeve pipe 213 by overcoming the elastic potential energy of the first spring 215, the gas in the inside of the first sliding sleeve 205 is discharged through the first cavity in the inside of the second fixed block 207.

[0075] It should be noted that the surface of the puncture cabin 101 is provided with a sealing door, which is convenient for taking and placing the waste lithium battery, and the three-axis moving table 102 can realize the horizontal movement of the vertical moving arm, and the vertical moving arm can be lifted in the vertical direction;

[0076] The working principle and use process of the puncture cabin 101 sealing door and the three-axis moving table 102 are known in the prior art, and will not be described in detail here;

[0077] The first fixed block 203 and the surface of the C-shaped gas collecting shell 201 are provided with through grooves to communicate with each other;

[0078] The pipeline connection or communication is known in the prior art, and will not be described in detail here.

[0079] The above is the preferred embodiment of the present application, it should be noted that for those skilled in the art, without departing from the principles described in the present application, can also be made several improvements and refinements, these improvements and refinements should also be considered the scope of protection of the present application.

Claims

1. A waste lithium battery puncture device, comprising a puncture cabin, the upper surface of the puncture cabin is provided with a three-axis moving table, the bottom of the vertical moving arm of the puncture cabin is provided with a puncture needle, characterized in that, Also include: The surface of the puncture cabin is provided with two groups of sealing leather rolls, each group of the sealing leather rolls is symmetrically arranged, and the parts of the adjacent two sealing leather rolls inside the puncture cabin are tightly fitted, the vertical moving arm surface of the three-axis moving table is provided with a constraint sliding block, the end of the sealing leather roll is provided with a C-shaped rod, and the sliding fit of the constraint sliding block and the C-shaped rod enables the three-axis moving table to drive the sealing leather roll to move, and the area between the four sealing leather rolls below and the four sealing leather rolls above inside the puncture cabin remains sealed; The surface of the puncture cabin is fixedly connected with a second fixed block, first fixed blocks and third fixed blocks are symmetrically arranged on the two sides of the second fixed block, a fixed sleeve is fixedly connected in a first circular groove opened on the surface of the first fixed block, a first sliding sleeve is slidingly connected in the inside of the fixed sleeve, the end of the first sliding sleeve is fixedly connected in a second circular groove opened on the surface of a first moving block, a first air bag is fixedly connected in a third circular groove opened on the surface of the third fixed block, a second moving block is arranged at the end of the first air bag away from the third fixed block, the end of the first air bag is fixedly connected to the surface of the second moving block, a plurality of constraint sliding rods are fixedly connected between the third fixed block and the first fixed block, the constraint sliding rods are respectively fixedly connected in corresponding first through holes opened on the surface of the second fixed block, the first moving block and the second moving block are respectively slidingly connected with corresponding constraint sliding rods through corresponding second through holes opened on the surfaces thereof; The inside of the puncture cabin is fixedly connected with a C-shaped gas collecting shell, a gas distribution bucket is fixedly connected in a first rectangular groove opened on the surface of the C-shaped gas collecting shell, the gas distribution bucket is fixedly connected in a first rectangular groove opened on the surface of the puncture cabin, the first fixed block is in communication with the inside of the C-shaped gas collecting shell, a first electromagnetic valve is installed in a fourth circular groove opened on the surface of the gas distribution bucket, a sleeve pipe is fixedly connected in a fifth circular groove opened on the end surface of the first sliding sleeve, a first spring is arranged on the surface of the sleeve pipe, a plug is arranged at the end of the sleeve pipe, the two ends of the sleeve pipe are fixedly connected with the first sliding sleeve and the plug, a plug pipe is fixedly connected in a sixth circular groove opened on the surface of the second fixed block, a third check valve is installed on the surface of the second fixed block, the third check valve is in communication with the inside of the plug pipe through a first cavity opened in the inside of the second fixed block; A plurality of third springs are arranged between the first moving block and the first fixed block, the two ends of the third springs are fixedly connected with the first fixed block and the first moving block, a plurality of connecting rods are symmetrically arranged between the second moving block and the first moving block, the connecting rods are fixedly connected with the second moving block and the first moving block, the first air bag is compressed by the movement of the first sliding sleeve, so that the inert gas in the first air bag is injected into the inside of the puncture cabin.

2. The spent lithium battery puncture device of claim 1, wherein, The surface of the puncture cabin is fixedly connected with an air pressure adjusting box, a seventh circular groove and an eighth circular groove are formed in the surface of the air pressure adjusting box, a first one-way valve and a second one-way valve are respectively installed in the seventh circular groove and the eighth circular groove, the first air bag is connected with the inside of the air pressure adjusting box through a pipeline, the air inlet of the second one-way valve is connected with the inside of an external inert gas source device through a pipeline, so that the inert gas is input into the inside of the air pressure adjusting box through the second one-way valve, and the inert gas in the inside of the external inert gas source device or the first air bag is injected into the inside of the puncture cabin through the air pressure adjusting box and the first one-way valve.

3. The spent lithium battery puncture device of claim 2, wherein, The end of the vertical moving arm of the three-axis moving table is fixedly connected with a protection bucket, the bottom surface of the protection bucket is fixedly connected with an air outlet ring, and the air outlet ring is connected with the air outlet of the first one-way valve through a pipeline.

4. The spent lithium battery puncture device of claim 3, wherein, The surface of the C-shaped gas collecting shell is uniformly provided with a ventilation circular hole, and the inside of the C-shaped gas collecting shell is provided with a T-shaped blocking plate near the ventilation circular hole.

5. The spent lithium battery puncture device of claim 4, wherein, The inside of the constraint sliding block is fixedly connected with a sealing sleeve, the constraint sliding block is slidably connected with the vertical moving arm of the three-axis moving table through the sealing sleeve, the surface of the constraint sliding block is symmetrically provided with two groups of constraint sliding grooves, the C-shaped rod is slidably connected with the constraint sliding block through the corresponding constraint sliding groove, and the inner wall surface of the puncture cabin is symmetrically fixedly connected with two groups of constraint sliding rails.

6. The spent lithium battery puncture device of claim 5, wherein, The surface of the sealing skin roll is symmetrically rotatably connected with a fixed support, the fixed support is fixedly connected with the puncture cabin, one end of the sealing skin roll winding shaft is provided with a winding spring box, the winding spring box is fixedly connected with the corresponding fixed support, the inside of the winding spring box is provided with a reset winding spring, one end of the reset winding spring is fixedly connected with the sealing skin roll winding shaft, and the other end of the reset winding spring is fixedly connected with the winding spring box.

7. The spent lithium battery puncture device of claim 6, wherein, The four vertical surfaces of the puncture cabin are provided with strip grooves, and the inner wall surface of the strip groove and the inner wall surface of the puncture cabin are in contact with the surface of the sealing skin roll.

8. A method for puncturing a used lithium battery, applied to the used lithium battery puncturing device as claimed in claim 7, characterized in that, Specifically includes the following steps: Step one, the sealing door on the surface of the puncture cabin, the waste lithium battery fixed by the clamp is put into the inside of the puncture cabin and fixed, and the sealing door is closed; Step two, move the vertical moving arm of the three-axis moving table to the set position, drive the puncture needle to puncture the waste lithium battery through the lifting of the vertical moving arm of the three-axis moving table; Step three, when the vertical moving arm moves horizontally in step two, the constraint slider on the surface of the vertical moving arm slides relative to two mutually parallel C-shaped rods, and drives the other two mutually parallel C-shaped rods to move. In the process of moving the C-shaped rods, the sealing skin extends towards the inside of the puncture cabin or is wound by the winding shaft of the sealing skin under the cooperation of the reset winding spring elastic potential inside the winding spring box, overcoming the elastic potential of the reset winding spring. When the vertical moving arm of the three-axis moving table moves vertically, the sealing sleeve inside the constraint slider keeps the air tightness between the lower part and the upper part of the constraint slider inside the puncture cabin through the vertical moving arm of the three-axis moving table. Step four, when high-pressure gas leaks during the puncture process of the waste lithium battery in step two, when the air pressure value inside the puncture cabin exceeds the set value, the T-shaped blocking plate is extruded into the inside of the second sliding sleeve by the C-shaped gas collecting shell inside the puncture cabin through the action of the air pressure difference, so that the gas inside the puncture cabin enters the C-shaped gas collecting shell, and then enters the fixed sleeve inside through the gas distribution bucket. The air pressure in the fixed sleeve rises to make the first sliding sleeve move towards the second fixed block, and the first gas bag is compressed by the second moving block through the connecting rod to make the inert gas in the first gas bag enter the inside of the puncture cabin. When the plug pipe is inserted into the inside of the sleeve pipe and the plug overcomes the elastic potential of the first spring to separate from the sleeve pipe, the gas in the first sliding sleeve is discharged through the first cavity inside the second fixed block.

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