A waste battery live crushing system and its application method

Abstract

This invention belongs to the field of waste battery processing technology, specifically relating to a live-charged battery crushing system and its application method. The system includes a controller and an operating chamber consisting of a buffer hopper, a crusher, and a feeding device connected in sequence. Multiple inert gas inlets are provided in the operating chamber, connected to an inert gas supply device via gas pipes. A dry ice spraying device is installed at the top of the crusher and the feeding device. This invention uses multiple inert gas inlets to quickly fill the operating chamber with inert gas, effectively preventing the existence of dead zones where air remains, reducing the oxygen and moisture content in the operating chamber, and avoiding fires and explosions caused by battery short circuits during live-charged crushing. When the oxygen concentration and smoke concentration are too high, the dry ice spraying device will spray dry ice to avoid the risk of fire, ensuring safety and reliability; when the moisture concentration is too high, the dry ice spraying device will spray dry ice to effectively prevent battery components from becoming damp and decomposing, improving the battery component recovery rate.

Description

Technical Field

[0001] This invention belongs to the field of waste battery processing technology, specifically relating to a waste battery live crushing system and its application method. Background Technology

[0002] With the increasingly widespread application of batteries, the demand for the disposal of used batteries is also growing. Particularly in the automotive industry, the lifespan of power batteries for new energy vehicles is approximately 5-8 years, and my country is poised to experience a surge in battery disposal. According to statistics from the China Automotive Technology Research Center, the amount of used power batteries that my country will need to recycle is expected to reach 1.1 million tons by 2025.

[0003] Because used batteries contain metals, separators, and electrolytes, improper or untreated use can severely impact the environment, harm human health, and waste non-renewable resources. Therefore, resource recovery from used batteries is essential. Recycling high-value metals such as lithium, cobalt, nickel, and lead can generate significant economic benefits and promote energy conservation and emission reduction (CN 110203949 A, CN 116692910 A, CN 111430832 B).

[0004] Battery fragmentation methods are divided into post-discharge fragmentation and on-charge fragmentation. However, post-discharge fragmentation requires the use of a brine tank, which is time-consuming, requires a large area, and generates a lot of saline wastewater that needs to be treated. Furthermore, since the remaining charge of the recovered batteries varies, completely discharging all of them would render the work useless. Therefore, on-charge fragmentation is currently the mainstream method. However, on-charge fragmentation can cause fires due to short circuits in the battery cells during the fragmentation process. Although methods such as freezing the batteries with liquid nitrogen for subsequent fragmentation (CN 108525817A, CN 113856842A, CN 113856842B) exist, cryogenic freezing only slows down the rate of temperature rise after a short circuit and does not effectively stop the temperature rise. Moreover, current inert gas protection systems are prone to blind spots and cannot effectively prevent battery fires.

[0005] Therefore, overcoming the safety blind spots in the process of crushing waste batteries and quickly and effectively controlling the spread of fire during the crushing and subsequent transportation of charged batteries are crucial issues for battery recycling. Summary of the Invention

[0006] The technical problem to be solved by this invention is to provide a waste battery shredding system and its application method. During the waste battery shredding process, an inert gas protective atmosphere is provided in all directions without dead angles, making the waste battery recycling process safer and more reliable. It can be applied not only to lithium batteries, but also to other batteries.

[0007] The technical solution adopted is as follows:

[0008] A waste battery live crushing system includes a controller and an operating chamber consisting of a buffer hopper, a crusher, and a feeding device connected in sequence. An inert gas inlet is provided in the operating chamber, and the inert gas inlet is connected to an inert gas supply device through a gas pipe.

[0009] The bottom outlet of the buffer silo is connected to the feed inlet of the crusher, and a feeding device is connected below the discharge outlet of the crusher. A conveyor belt is installed below the discharge outlet of the crusher and inside the feeding device. The conveyor belt is driven by a control motor. A dry ice spray device is installed at the top of the crusher and the feeding device, and an exhaust gas outlet is installed at the end of the feeding device.

[0010] The buffer hopper is connected to the intermediate gas inlet of the feeding device on one side via a first vent pipe, and the crusher is connected to the intermediate gas inlet of the feeding device on the upper side via a second vent pipe.

[0011] Automatic valves are installed between the bottom outlet of the buffer silo and the feed inlet of the crusher, and at the discharge outlet of the crusher. The feed inlet of the crusher is a straight pipe section, and the bottom of the straight pipe is the bottom of the crusher, where the gear crushing part is located.

[0012] The inert gas supply device, crusher, control motor, dry ice spraying device, and automatic valve are all connected to a controller and controlled by the controller.

[0013] The entire system is sealed, with each connection point sealed.

[0014] Preferably, at least six inert gas inlets are provided, located on the upper side of the buffer hopper, at the bottom of the buffer hopper, and at the four corners of the bottom of the crusher; dry ice spray devices are provided on the left and right sides of the straight pipe section of the crusher and above the gear crushing section inside the bottom of the crusher. The diameter of the straight pipe section is wider than the longest side or diagonal of the waste battery, so that the waste battery can fall smoothly.

[0015] Preferably, the inert gas supply device is provided with the same number of gas pipes as the inert gas inlets, each gas pipe is adapted to the inert gas inlet, and the connection is sealed.

[0016] Preferably, each of the inert gas inlets is a diffusion-type inlet, with diffusion ports provided inside the buffer silo and crusher, and round holes evenly arranged on the sidewall of the diffusion port.

[0017] Preferably, a first intermediate gas outlet is provided on one side of the buffer hopper to connect to a first vent pipe; a second intermediate gas outlet is provided on the upper side of the crusher to connect to a second vent pipe, and the first vent pipe and the second vent pipe are connected to an intermediate gas inlet after merging.

[0018] Preferably, an oxygen concentration detection device, a water vapor concentration detection device, and a smoke concentration detection device are installed at the second ventilation pipe and the second intermediate gas outlet. The oxygen concentration detection device, water vapor concentration detection device, and smoke concentration detection device are connected to the controller and transmit the detected data to the controller.

[0019] Preferably, dry ice spray devices are installed on both sides of the straight-through pipe section of the crusher and at the top of the gear crushing section inside the bottom of the crusher; the feeding device includes a horizontal section and an inclined section, the inclined section having an angle of inclination between 15° and 18° with the ground, the horizontal section being connected to the crusher discharge port, and at least two dry ice spray devices evenly spaced at the top of the inclined section; the intermediate gas inlet is located at the junction of the horizontal section and the inclined section.

[0020] Preferably, the dry ice spraying device has a shower-type structure inside the feeding device, including a connecting pipe and a disc. The disc has several openings evenly arranged on it, and the connecting pipe is connected to an external dry ice supply device.

[0021] Preferably, an exhaust port is provided at the end of the feeding device, and an oxygen concentration detection device, a water vapor concentration detection device, and a smoke concentration detection device are installed at the exhaust port. The oxygen concentration detection device, the water vapor concentration detection device, and the smoke concentration detection device are connected to the controller and transmit the detected data to the controller.

[0022] An application method for a live-charged battery crushing system includes the following steps:

[0023] (1) Place the charged waste batteries into the buffer silo, turn on the inert gas supply device, so that the buffer silo and the crusher are fully filled with inert gas. The inert gas is transmitted to the feeding device through the first vent pipe and the second vent pipe to ensure the inert gas atmosphere of the feeding device and realize the recycling of inert gas.

[0024] (2) Set the oxygen concentration threshold K and water vapor concentration threshold M for the oxygen concentration detection device and the water vapor concentration detection device. When the detected oxygen concentration value is less than K and the water vapor concentration value is less than M, the crushing operation can begin.

[0025] (3) The controller controls the opening of the automatic valve, and the charged waste batteries in the buffer hopper enter the crusher gear crushing part through the crusher straight pipe section for crushing;

[0026] (4) The crushed waste batteries are discharged from the crusher outlet and fall onto the conveyor belt of the feeding device, and are transported to the end outlet of the feeding device to the subsequent separation device.

[0027] (5) The controller sets the smoke concentration threshold N of the smoke concentration detection device. The smoke concentration detection device detects in real time and transmits the data to the controller. When the detected smoke concentration is greater than N, the controller starts the dry ice spray device. The oxygen concentration detection device detects in real time and transmits the data to the controller. If the oxygen concentration value is greater than K, the controller starts the dry ice spray device. The water vapor concentration detection device detects in real time and transmits the data to the controller. If the water vapor concentration value is greater than M, the controller starts the dry ice spray device.

[0028] The values ​​of K, M, and N are set according to the actual needs of on-site operation.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] The present invention discloses a waste battery live crushing system and its application method, which rapidly fills the buffer hopper and crusher with inert gas through multiple inert gas inlets, effectively preventing the existence of gas diffusion dead zones and oxygen retention, reducing the oxygen content in the operating chamber, and avoiding fire and explosion caused by battery short circuit during live crushing.

[0031] This invention includes an oxygen concentration detection device at the second intermediate gas outlet to monitor oxygen concentration. If the oxygen concentration exceeds the set limit, a dry ice spray device located in the crushing section of the crusher gears immediately sprays dry ice to mitigate the risk of fire and rapidly reduce the oxygen content in the crusher chamber to the set value. The smoke concentration detection device and the dry ice spray device located in the feeding device prevent the risk of fire and explosion during the feeding process, making the battery recycling process safer.

[0032] The water vapor concentration detection device is linked with the dry ice spraying device. When the water vapor concentration is too high, the dry ice spraying device will spray dry ice, which effectively prevents battery components such as lithium hexafluorophosphate from decomposing due to moisture, improves the recovery rate of battery components and the value of recovered products, and avoids highly corrosive gaseous pollutants such as hydrofluoric acid generated after battery components decompose due to moisture, reducing the requirements for subsequent exhaust gas treatment equipment and making the battery recycling process more environmentally friendly. Attached Figure Description

[0033] Figure 1 This is a structural diagram of the system of the present invention.

[0034] Figure 2 This is an enlarged view of the inert gas inlet of the present invention.

[0035] Figure 3 This is an enlarged view of the dry ice spraying device of the present invention.

[0036] In the diagram, 1 is the buffer hopper, 2 is the crusher, 31-1 to 31-6 are the inert gas inlets, 32-1 is the first vent pipe, 32-2 is the second vent pipe, 33 is the intermediate gas inlet, 4-1 to 4-2 are the oxygen concentration detection devices, 5-1 to 5-2 are the water vapor concentration detection devices, 6-1 to 6-2 are the smoke concentration detection devices, 7-1 to 7-8 are the dry ice spray devices, 8 is the feeding device, 9 is the exhaust gas outlet, and 10 is the crusher outlet. Detailed Implementation

[0037] The accompanying drawings are for illustrative purposes only; certain well-known structures and their descriptions in the drawings may be omitted by those skilled in the art, and therefore should not be construed as limiting the present invention. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions; terms such as "upper," "lower," "left," "right," "side," and "outer" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0038] It should be understood that "first," "second," etc., are merely for ease of description and do not refer to certain technical features, nor should they be construed as limitations on the present invention.

[0039] The principles and features of the present invention are described below with reference to embodiments. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Unless otherwise specified, specific conditions in the embodiments are performed under conventional conditions or conditions recommended by the manufacturer. Instruments and equipment used, unless otherwise specified, are all commercially available products. Other technical methods not mentioned employ existing technologies.

[0040] Example 1

[0041] A waste battery live-line crushing system includes a controller, and further includes a buffer silo 1, a crusher 2, and a feeding device 8 connected in sequence. The buffer silo 1 and the crusher 2 are each equipped with an inert gas inlet, which is connected to an inert gas supply device via a gas pipe. Automatic valves are installed between the bottom outlet of the buffer silo 1 and the inlet of the crusher 2, and at the outlet of the crusher 2. The inlet of the crusher 2 is a straight-through pipe section, with the bottom of the straight-through pipe forming the bottom of the crusher, where the gear crushing section is located.

[0042] Four inert gas inlets are provided, located at the bottom of the buffer silo 1, one side of the straight pipe of the crusher 2, and at two opposite corners of the bottom of the crusher 2. The inert gas supply device is provided with the same number of gas pipes as the inert gas inlets. In this embodiment, four gas pipes are provided, each of which is adapted to the inert gas inlets, and the connection is sealed.

[0043] Two dry ice spray devices are installed on the left and right sides of the straight pipe section of the crusher 2, and four dry ice spray devices are installed above the gear crushing part at the bottom of the crusher to avoid excessive oxygen and water vapor concentration.

[0044] The buffer hopper 1 is connected to the intermediate gas inlet 33 of the feeding device 8 via a first vent pipe 32-1 on one side, and to the intermediate gas inlet 33 of the feeding device 8 via a second vent pipe 32-2 on the upper side of the crusher 2. A first intermediate gas outlet is provided on one side of the buffer hopper 1, connected to the first vent pipe 32-1; a second intermediate gas outlet is provided on the upper side of the crusher 2, connected to the second vent pipe 32-2. The first vent pipe 32-1 and the second vent pipe 32-2 merge and connect to the intermediate gas inlet 33. The intermediate gas inlet 33 is located at the junction of the horizontal and inclined sections of the feeding device 8.

[0045] The second ventilation pipe 32-2 and the second intermediate gas outlet are equipped with an oxygen concentration detection device 4-1, a water vapor concentration detection device 5-1 and a smoke concentration detection device 6-1. The oxygen concentration detection device 4-1, the water vapor concentration detection device 5-1 and the smoke concentration detection device 6-1 are connected to the controller and transmit the detected data to the controller.

[0046] The top of the feeding device 8 is equipped with two dry ice spray devices, which are evenly spaced at the top of the feeding device 8.

[0047] The feeding device 8 is provided with an exhaust port 9 at its end. An oxygen concentration detection device 4-2, a water vapor concentration detection device 5-2, and a smoke concentration detection device 6-2 are installed at the exhaust port. The oxygen concentration detection device 4-2, the water vapor concentration detection device 5-2, and the smoke concentration detection device 6-2 are connected to the controller and transmit the detected data to the controller.

[0048] The inert gas supply device, crusher 2, control motor, dry ice spraying device, and automatic valve are all connected to the controller and controlled by the controller.

[0049] The entire system is sealed, with each connection point sealed.

[0050] Example 2

[0051] like Figure 1As shown, a waste battery live crushing system includes a controller (not shown in the figure), and also includes a buffer silo 1, a crusher 2, and a feeding device 8 connected in sequence. The buffer silo 1 and the crusher 2 are respectively provided with inert gas inlets, and the inert gas inlets are connected to an inert gas supply device through gas pipes.

[0052] Six inert gas inlets are provided: inert gas inlet 31-2 on the upper side of the buffer silo 1, inert gas inlet 31-1 at the bottom of the buffer silo, and inert gas inlets 31-3 to 31-6 at the four corners of the bottom of the crusher. Automatic valves are installed between the bottom outlet of the buffer silo 1 and the feed inlet of the crusher 2, and at the discharge outlet of the crusher 2. The feed inlet of the crusher is a straight pipe section, and the bottom of the straight pipe is the bottom of the crusher 2, which is the gear crushing section.

[0053] The inert gas supply device is equipped with the same number of gas pipes as the inert gas inlet. In this embodiment, six gas pipes are provided, each of which is adapted to the inert gas inlet and the connection is sealed.

[0054] like Figure 2 As shown, each of the inert gas inlets is a diffusion-type inlet. Diffusion ports are provided inside the buffer silo 1 and the crusher 2, and round holes are evenly arranged on the side wall of the diffusion port.

[0055] Two dry ice spraying devices 7-1 and 7-2 are installed on the left and right sides of the straight pipe section of crusher 2, and two dry ice spraying devices 7-3 and 7-4 are installed above the gear crushing part at the bottom of crusher 2 to avoid spraying dry ice when the oxygen concentration, water vapor concentration, or smoke concentration is too high.

[0056] The bottom outlet of the buffer silo 1 is connected to the feed inlet of the crusher 2. Below the discharge outlet of the crusher 2 is the horizontal section of the feeding device 8. A conveyor belt is installed below the discharge outlet of the crusher and inside the feeding device, driven by a control motor. Four dry ice spray devices (7-5 ​​to 7-8) are installed at the top of the inclined section of the feeding device 8. The end of the feeding device 8 is connected to the exhaust outlet. Conveyor belts are installed in both the horizontal and inclined sections of the feeding device 8, driven by a control motor (not shown in the figure). The feeding device 8 transports the crushed waste batteries to the subsequent separation device for further processing.

[0057] An application method for a live-charged battery crushing system includes the following steps:

[0058] (1) Place the charged waste battery into the buffer silo 1, turn on the inert gas supply device, so that the buffer silo 1 and the crusher 2 are filled with inert gas in all directions. The inert gas is transmitted to the feeding device 8 through the first vent pipe 32-1 and the second vent pipe 32-2 to ensure the inert gas atmosphere of the feeding device 8 and realize the cascade utilization of inert gas.

[0059] (2) Set the oxygen concentration threshold K and water vapor concentration threshold M for the oxygen concentration detection device and the water vapor concentration detection device. When the detected oxygen concentration value is less than K and the water vapor concentration value is less than M, the crushing operation can begin.

[0060] (3) The controller controls the opening of the automatic valve, and the charged waste batteries in the buffer silo 1 enter the gear crushing part of the crusher 2 through the crusher straight pipe section for crushing;

[0061] (4) The crushed waste batteries are discharged from the crusher outlet and fall onto the conveyor belt of the feeding device 8, and are transported to the end outlet of the feeding device to the subsequent separation device.

[0062] (5) The controller sets the smoke concentration threshold N of the smoke concentration detection device. The smoke concentration detection devices 6-1 and 6-2 detect in real time and transmit the data to the controller. When the smoke concentration detected by the smoke concentration detection device 6-1 is greater than N, the controller starts the dry ice spray device 7-1 to 7-4. When the smoke concentration detected by the smoke concentration detection device 6-2 is greater than N, the controller starts the dry ice spray device 7-5 to 7-8.

[0063] Oxygen concentration detection devices 4-1 and 4-2 detect oxygen concentration in real time and transmit the data to the controller. If the oxygen concentration value detected by oxygen concentration detection device 4-1 is greater than K, the controller will activate dry ice spray devices 7-1 to 7-4. When the oxygen concentration value detected by oxygen concentration detection device 4-2 is greater than K, the controller will activate dry ice spray devices 7-5 to 7-8.

[0064] Water vapor concentration detection devices 5-1 and 5-2 detect water vapor concentration in real time and transmit the data to the controller. If the water vapor concentration value detected by water vapor concentration detection device 5-1 is greater than M, the controller starts the dry ice spray devices 7-1 to 7-4. When the water vapor concentration value detected by water vapor concentration detection device 5-2 is greater than M, the controller starts the dry ice spray devices 7-5 to 7-8.

[0065] Other contents not mentioned are the same as in Example 1.

[0066] Example 3

[0067] A waste battery live-line crushing system includes a controller, and further includes a buffer silo 1, a crusher 2, and a feeding device 8 connected in sequence. The buffer silo 1 and the crusher 2 are each equipped with an inert gas inlet, which is connected to an inert gas supply device via a gas pipe. Automatic valves are installed between the bottom outlet of the buffer silo 1 and the inlet of the crusher 2, and at the outlet of the crusher 2. The inlet of the crusher 2 is a straight-through pipe section, with the bottom of the straight-through pipe forming the bottom of the crusher, where the gear crushing section is located.

[0068] Eight inert gas inlets are provided, located on the upper side of the buffer silo 1, at the bottom of the buffer silo 1, and at the four corners of the bottom of the crusher 2, respectively. The inert gas supply device is provided with the same number of gas pipes as the inert gas inlets. In this embodiment, eight gas pipes are provided, each of which is adapted to the inert gas inlets, and the connections are sealed.

[0069] Two dry ice spray devices are installed on the left and right sides of the straight pipe section of crusher 1, and four dry ice spray devices are installed above the gear crushing section at the bottom of crusher 2 to avoid excessive oxygen concentration.

[0070] The top of the inclined section of the feeding device 8 is equipped with 6 dry ice spray devices, which are evenly spaced.

[0071] Other contents not mentioned are the same as in Example 1.

[0072] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0073] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. An application method for a live-line crushing system for waste batteries, comprising a controller, characterized in that, The system also includes an operating chamber consisting of a buffer silo, a crusher, and a feeding device connected in sequence. An inert gas inlet is provided in the operating chamber, and the inert gas inlet is connected to an inert gas supply device through a gas pipe. The bottom outlet of the buffer silo is connected to the feed inlet of the crusher, and a feeding device is connected below the discharge outlet of the crusher. A conveyor belt is installed below the discharge outlet of the crusher and inside the feeding device. The conveyor belt is driven by a control motor. A dry ice spray device is installed at the top of the crusher and the feeding device, and an exhaust gas outlet is installed at the end of the feeding device. The buffer hopper is connected to the intermediate gas inlet of the feeding device on one side via a first vent pipe, and the crusher is connected to the intermediate gas inlet of the feeding device on the upper side via a second vent pipe. Automatic valves are installed between the bottom outlet of the buffer silo and the feed inlet of the crusher, and at the discharge outlet of the crusher. The feed inlet of the crusher is a straight pipe section, and the bottom of the straight pipe is the bottom of the crusher, where the gear crushing part is located. The inert gas supply device, crusher, control motor, dry ice spraying device, and automatic valve are all connected to the controller and controlled by the controller. At least six inert gas inlets are provided, located on the upper side of the buffer silo, at the bottom of the buffer silo, and at the four corners of the bottom of the crusher; dry ice spraying devices are provided on the left and right sides of the straight pipe section of the crusher and above the gear crushing part inside the bottom of the crusher. A first intermediate gas outlet is provided on one side of the buffer hopper to connect to a first vent pipe; a second intermediate gas outlet is provided on the upper side of the crusher to connect to a second vent pipe, and the first vent pipe and the second vent pipe are connected to the intermediate gas inlet after they merge. An oxygen concentration detection device, a water vapor concentration detection device, and a smoke concentration detection device are installed at the second ventilation pipe and the second intermediate gas outlet. The oxygen concentration detection device, water vapor concentration detection device, and smoke concentration detection device are connected to the controller and transmit the detected data to the controller. Dry ice spraying devices are installed on both sides of the straight pipe section of the crusher and at the top of the gear crushing part of the crusher; the feeding device includes a horizontal section and an inclined section. The horizontal section is connected to the discharge port of the crusher, and at least two dry ice spraying devices are installed at the top of the inclined section and are evenly spaced; the intermediate gas inlet is located at the junction of the horizontal section and the inclined section. An exhaust port is provided at the end of the feeding device. An oxygen concentration detection device, a water vapor concentration detection device, and a smoke concentration detection device are installed at the exhaust port. The oxygen concentration detection device, water vapor concentration detection device, and smoke concentration detection device are connected to the controller and transmit the detected data to the controller. The application method includes the following steps: (1) Place the charged waste batteries into the buffer silo, turn on the inert gas supply device, so that the buffer silo and the crusher are filled with inert gas in all directions. The inert gas is transmitted to the feeding device through the first vent pipe and the second vent pipe to ensure the inert gas atmosphere of the feeding device and realize the recycling of inert gas. (2) Set the oxygen concentration threshold K and water vapor concentration threshold M for the oxygen concentration detection device and the water vapor concentration detection device. When the detected oxygen concentration value is less than K and the water vapor concentration value is less than M, the crushing operation can begin. (3) The controller controls the opening of the automatic valve, and the charged waste batteries in the buffer hopper enter the crusher gear crushing part through the crusher straight pipe section for crushing; (4) The crushed waste batteries are discharged from the outlet of the crusher and fall onto the conveyor belt of the feeding device, and are transported to the end outlet of the feeding device to the subsequent separation device. (5) The controller sets the smoke concentration threshold N of the smoke concentration detection device. The smoke concentration detection device detects in real time and transmits the data to the controller. When the detected smoke concentration is greater than N, the controller starts the dry ice spray device. The oxygen concentration detection device detects in real time and transmits the data to the controller. If the oxygen concentration value is greater than K, the controller starts the dry ice spray device. The water vapor concentration detection device detects in real time and transmits the data to the controller. If the water vapor concentration value is greater than M, the controller starts the dry ice spray device.

2. The application method of the waste battery live-line crushing system according to claim 1, characterized in that, The inert gas supply device is equipped with the same number of gas pipes as the inert gas inlets, each gas pipe is adapted to the inert gas inlet, and the connection is sealed.

3. The application method of the waste battery live-line crushing system according to claim 1, characterized in that, Each of the inert gas inlets is a diffusion-type inlet, with diffusion ports provided inside the buffer silo and crusher, and round holes evenly arranged on the side wall of the diffusion port.

4. The application method of the waste battery live-line crushing system according to claim 1, characterized in that, The dry ice spraying device has a shower-type structure inside the crusher and feeding device, including a connecting pipe and a disc. Several openings are evenly arranged on the disc, and the connecting pipe is connected to an external dry ice supply device.

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