A debinding and drying system and method for lithium battery cells

Abstract

The present invention belongs to the fields of lithium battery manufacturing and environmental protection technologies, and particularly relates to a debinding and drying system and method for lithium battery cells. By arranging the system near a coater, the use space and cost of the factory building can be reduced. At the same time, the debinding and drying of the battery pack are integrated to improve the processing efficiency. The tail exhaust of the coater can be highly utilized to provide heat for the system, facilitating the condensation of the gas and the maintenance of the temperature of the liquid in the gas-liquid heat exchanger to provide condensate for the debinding of the battery pack in the debinding seal box. At the same time, the tail exhaust of the coater can also be directly used to dry the battery pack, enabling a closed-loop operation within the system, that is, no additional external heat is required to supplement the heat of the system, reducing resource utilization and environmental pollution.

Description

Technical Field

[0001] The present invention belongs to the technical fields of lithium battery manufacturing and environmental protection, and particularly relates to a glue removal and drying system and method for lithium battery cells. Background Art

[0002] During the manufacturing process of lithium-ion batteries, quality control in the production of battery cells is a key step in ensuring battery performance and safety. Among them, applying glue to protect the battery cells is an important measure to ensure the stability of the battery cells and extend their service life. However, defective products are inevitably produced during the gluing process, and the identification and treatment of these defective products are crucial for improving product quality and reducing production costs.

[0003] Currently, for the glue removal treatment of unqualified battery cells, the traditional process uses a glue removal box device. This process involves putting the battery cells into a special soaking pool and adding a chemical glue remover, and then continuously heating at a high temperature in a drying room to accelerate the dissolution of the glue. However, the existing methods have certain limitations. First, since the volume and weight of the battery cells are usually large, manually placing them into the soaking pool is extremely labor-intensive. Second, forklifts and other heavy machinery are often required to move the soaking pool, which increases logistics costs and raises requirements for factory building design and space utilization. In addition, the chemical glue remover may produce harmful volatile organic compounds (VOCs) under high-temperature conditions. These substances pose a potential threat to the health of operators and also increase the risk of environmental pollution. The enclosed drying room environment also makes it more difficult to monitor and control the volatilization of these chemical substances. Finally, the glue removal process often requires continuous heating for more than 24 hours, seriously affecting the production efficiency of the battery cells and increasing production costs. Summary of the Invention

[0004] The present invention aims to provide a glue removal and drying system and method for lithium battery cells. By setting the system near the coater, it can reduce the use space and cost of the factory building. At the same time, the glue removal and drying of the battery pack are integrated to improve the processing efficiency. It can highly utilize the tail gas of the coater to provide heat for the system, facilitating the condensation of the gas and maintaining the temperature of the liquid in the gas-liquid heat exchanger to provide condensate for the glue removal of the battery pack in the glue removal and sealing box. At the same time, it can also directly use the tail gas of the coater to dry the battery pack, enabling a closed-loop operation within the system, that is, no additional external heat is required to supplement the heat of the system, reducing resource utilization and environmental pollution.

[0005] A glue removal and drying system for lithium battery cells is set between the coater and the condensation tower and is used for glue removal and drying of lithium batteries. It includes:

[0006] The glue-dissolving and sealing box is provided with a water storage tank and a soaking pool inside. The soaking pool is used to place the battery pack and the glue-dissolving liquid, and the water storage device is used to store the glue-dissolving liquid. A liquid discharge device is arranged at the bottom of the soaking pool, and the soaking pool is located above the water storage tank. The soaking pool is communicated with the condensation tower through an exhaust air channel.

[0007] The first gas-liquid heat exchanger is used to maintain the liquid temperature. The first gas-liquid heat exchanger includes a first gas side channel and a first liquid side channel. The first end of the first gas side channel is communicated with the exhaust port of the coater. The first end of the first liquid side channel is respectively communicated with the water storage tank through a circulating liquid channel and with the condensation tower through a supplementary liquid channel, and the end of the first liquid side channel is communicated with the soaking pool.

[0008] The second gas-liquid heat exchanger is used to condense the high-temperature exhaust gas of the coater. The second gas-liquid heat exchanger includes a second gas side channel and a second liquid side channel. The first end of the second gas side channel is communicated with the end of the first gas side channel, and the end of the second gas side channel is communicated with the water storage tank through a first air duct and with the condensation tower through a second air duct. The second liquid side channel is communicated with the refrigerator for circulation.

[0009] By arranging this system near the coater, the use space and cost of the workshop can be reduced. At the same time, the glue-dissolving and drying of the battery pack are integrated to improve the processing efficiency. The tail exhaust of the coater can be highly utilized to provide heat for this system, which is convenient for the condensation of the gas and the maintenance of the liquid temperature in the gas-liquid heat exchanger to provide condensate for the glue-dissolving treatment of the battery pack in the glue-dissolving and sealing box. At the same time, the tail exhaust of the coater can also be directly used to dry the battery pack, so that a closed-loop operation is formed inside the system, that is, no additional external heat is required to supplement the heat of the system, reducing resource utilization and environmental pollution.

[0010] Furthermore, a fan is arranged on the exhaust air channel to accelerate the drying of the battery pack.

[0011] Furthermore, a circulation pump is arranged on the circulating liquid channel for the circulation of the liquid in the water storage tank and the soaking pool.

[0012] Furthermore, the first air duct is in a T shape and includes:

[0013] The first air inlet channel, which is communicated with the end of the second gas side channel and the water storage tank, is used to convey the high-temperature exhaust gas of the coater to the water storage tank. A first air inlet switch is arranged at the entrance of the first air inlet channel.

[0014] The second air inlet channel, which is communicated with the fresh air machine and the water storage tank, is used to convey fresh air to the water storage tank. A second air inlet switch is arranged at the entrance of the second air inlet channel.

[0015] By controlling the first air inlet switch and the second air inlet switch, the high-temperature exhaust gas of the coater can enter different device structures through different channels for different treatments.

[0016] Furthermore, the chiller includes:

[0017] A chiller water inlet, which is connected to the head end of the second liquid side channel;

[0018] A chiller water return port, which is connected to the end of the second liquid side channel.

[0019] By setting up the chiller to achieve a connected cycle with the second liquid side channel of the second gas-liquid heat exchanger, it is convenient to condense the gas in the second gas side channel of the second gas-liquid heat exchanger to form condensate, and further provide liquid supplement for the soaking pool.

[0020] Furthermore, it also includes a detection device; the detection device includes:

[0021] A liquid level detection device, which is arranged in the soaking pool and used to detect the liquid level in the soaking pool;

[0022] A humidity detection device, which is arranged in the soaking pool and used to detect the gas humidity in the soaking pool;

[0023] A gas detection device, which is arranged on the exhaust air channel and used to detect the component content of the gas in the exhaust air channel.

[0024] By setting up the liquid level detection device to detect the liquid level in the soaking pool, and then judging whether the battery pack is completely covered by the liquid for continuous debinding process and judging that there is no liquid in the soaking pool to close the liquid discharge device; by setting up the humidity detection device to detect the gas humidity in the soaking pool, and then judging whether the battery pack is dried; by setting up the gas detection device to detect the component content of the gas in the exhaust air channel, and then judging whether the gas in the debinding and sealing box meets the emission standards.

[0025] Furthermore, the debinding and sealing box is made of metal; a viewing port is arranged on the debinding and sealing box, and the viewing port is made of high-temperature resistant glass material.

[0026] By opening a viewing port on the debinding and sealing box and setting the viewing port as a high-temperature resistant glass material, it is convenient to observe the debinding and drying progress of the battery pack in real time through the viewing port.

[0027] A method for a debinding and drying system for lithium battery cells includes the following steps:

[0028] S1: Place the battery pack to be processed into the soaking pool without liquid and seal the debinding and sealing box;

[0029] S2: Perform debinding treatment on the battery pack;

[0030] S21: Start the chiller so that the chilled water is output from the water inlet of the chiller, flows through the second liquid side channel, and then returns to the chiller through the water return port of the chiller;

[0031] and returns to the chiller through the water return port of the chiller;

[0032] S22: Open the exhaust air outlet of the coater to introduce the high-temperature exhaust gas of the coater, and turn on the first air inlet switch so that the high-temperature exhaust gas of the coater enters the first gas side channel, and condenses to form condensate through the second gas side channel, and then is transported through the first air inlet channel

[0033] to the water storage tank;

[0034] S23: Turn on the circulation pump so that the condensate and the glue remover liquid in the water storage tank enter the circulation liquid channel, flow through the first liquid side channel

[0035] for heating, and then return to the soaking pool to start the glue removal treatment on the battery pack;

[0036] S24: When the liquid level detection device detects that the battery pack in the soaking pool is completely covered by the condensate, turn off the chiller and the first air inlet switch, so that the high-temperature exhaust gas of the coater passes through the first gas side channel and the second gas side channel in sequence, and then passes through the second air duct

[0037] and is transported to the condensation tower;

[0038] S25: Turn on the liquid discharge device so that the liquid in the soaking pool flows into the water storage tank;

[0039] S26: Wait for at least 24 hours to complete the glue removal of the battery pack, and turn off the circulation pump;

[0040] S27: Wait for the liquid in the soaking pool to flow into the water storage tank until the liquid level detection device detects that there is no

[0041] liquid in the soaking pool, and then turn off the liquid discharge device;

[0042] S3: Perform a drying treatment on the battery pack;

[0043] S31: Turn on the first air inlet switch and the fan so that the high-temperature exhaust gas of the coater passes through the first gas side channel and the second gas side channel in sequence and is transported to the glue removal sealing box to dry the battery pack, and then is recycled to the condensation tower through the exhaust air channel;

[0044] S32: When the humidity detection device detects that the humidity in the soaking pool is lower than the preset value, complete the drying of the battery pack, turn off the first air inlet switch, and turn on the second air inlet switch to introduce fresh air to purify the gas in the glue removal sealing box;

[0045] S33: When the gas detection device detects the gas emission standard of the exhaust air channel, turn off all the remaining equipment;

[0046] S4: Open the glue removal and sealing box and take out the battery pack to complete the glue removal and drying of the lithium battery cells.

[0047] Furthermore, the temperature range of the condensate formed at the end of the second gas side channel of the second gas-liquid heat exchanger is 45° - 55°C;

[0048] The temperature range of the liquid in the first liquid side channel of the first gas-liquid heat exchanger is 45° - 55°C.

[0049] Furthermore, in S23, when the condensate in the soaking pool is insufficient, the condensate is recovered from the condensate tower to the first liquid side channel through the supplementary liquid channel.

[0050] The beneficial effects of the present invention are as follows:

[0051] By arranging the system near the coater, the present invention can reduce the use space and cost of the workshop. At the same time, the glue removal and drying of the battery pack are integrated to improve the processing efficiency. It can highly utilize the tail gas discharge of the coater to provide heat for the system, which is convenient for the condensation of the gas in the gas-liquid heat exchanger and the maintenance of the liquid temperature to provide condensate for the glue removal of the battery pack in the glue removal and sealing box. At the same time, it can also directly use the tail gas discharge of the coater to dry the battery pack, enabling the system to form a closed-loop operation, that is, no additional external heat is required to supplement the heat of the system, reducing resource utilization and environmental pollution. The glue removal and drying nodes of the battery pack are judged by setting detection devices. Description of the Drawings

[0052] Figure 1 It is the structure and flow chart of the glue removal and drying system for lithium battery cells in the present invention.

[0053] Reference Signs:

[0054] 1. Glue removal and sealing box; 11. Soaking pool; 12. Water storage tank; 13. Exhaust air channel; 131. Fan;

[0055] 2. First gas-liquid heat exchanger; 21. First gas side channel; 22. First liquid side channel; 23. Circulation liquid channel; 24. Supplementary liquid channel; 25. Circulation pump;

[0056] 3. Second gas-liquid heat exchanger; 31. Second gas side channel; 32. Second liquid side channel; 331. First air inlet channel; 332. Second air inlet channel; 34. Second air duct;

[0057] 4. Coater;

[0058] 5. Condensate tower;

[0059] 6. Fresh air fan;

[0060] 7. Refrigerator. Detailed implementation mode

[0061] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0062] It should be noted that the following describes various aspects of the embodiments within the scope of the appended claims. It should be obvious that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is illustrative only. Based on this disclosure, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement the device and / or practice the method. In addition, this device can be implemented and this method can be practiced using other structures and / or functions in addition to one or more of the aspects described herein.

[0063] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0064] Embodiment 1

[0065] Figure 1 Shown is a debinding and drying system for lithium battery cells, which is arranged between a coater 4 and a condensation tower 5 and is used for debinding and drying lithium batteries. The system includes a debinding sealed box 1, a first gas-liquid heat exchanger 2, a second gas-liquid heat exchanger 3 and a detection device. By arranging the system near the coater 4, the use space and cost of the factory building can be reduced. At the same time, the debinding and drying of the battery pack are integrated to improve the processing efficiency. The tail gas discharge of the coater 4 can be highly utilized to provide heat for the system, which is convenient for the condensation of the gas and the maintenance of the temperature of the liquid in the gas-liquid heat exchanger to provide condensate for the debinding treatment of the battery pack in the debinding sealed box 1. At the same time, the tail gas discharge of the coater 4 can also be directly used to dry the battery pack, so that a closed-loop operation is formed inside the system, that is, no additional external heat is required to supplement the heat of the system, reducing resource utilization and environmental pollution. The detection device is set to judge the debinding and drying nodes of the battery pack.

[0066] Specifically, the glue-dissolving sealing box 1 is made of metal; a visual port is provided on the glue-dissolving sealing box, and the visual port is made of high-temperature resistant glass. By opening a visual port on the glue-dissolving sealing box and setting the visual port as high-temperature resistant glass, it is convenient to observe the glue-dissolving and drying progress of the battery pack in real time through the visual port. Inside the glue-dissolving sealing box 1 are provided:

[0067] A water storage tank 12 for storing the glue-dissolving liquid;

[0068] An immersion tank 11 for placing the battery pack and the glue-dissolving liquid; a liquid discharge device is opened at the bottom of the immersion tank 11, and the immersion tank 11 is located above the water storage tank 12; the immersion tank 11 is communicated with the condensation tower 5 through an exhaust air duct 13, and a fan 131 is provided on the exhaust air duct 13 to accelerate the drying of the battery pack.

[0069] Specifically, the first gas-liquid heat exchanger 2 is used to maintain the liquid temperature; the first gas-liquid heat exchanger 2 includes:

[0070] A first gas side channel 21, the head end of which is communicated with the exhaust port of the coater 4;

[0071] A first liquid side channel 22, the head end of which is respectively communicated with the water storage tank 12 through a circulating liquid channel 23 and with the condensation tower 5 through a supplementary liquid channel 24, and the tail end of the first liquid side channel 22 is communicated with the immersion tank 11;

[0072] Among them, a circulating pump 25 is provided on the circulating liquid channel 23 for circulating the liquid in the water storage tank 12 and the immersion tank 11.

[0073] Specifically, the second gas-liquid heat exchanger 3 is used to condense the high-temperature exhaust gas of the coater 4; the second gas-liquid heat exchanger 3 includes:

[0074] A second gas side channel 31, the head end of which is communicated with the tail end of the first gas side channel 21, and the tail end of the second gas side channel 31 is communicated with the water storage tank 12 through a first air duct and with the condensation tower 5 through a second air duct 34;

[0075] Among them, the first air duct is in a T shape and includes a first air inlet channel 331 and a second air inlet channel 332; the first air inlet channel 331 is communicated with the tail end of the second gas side channel 31 and the water storage tank 12, and a first air inlet switch is provided at the inlet of the first air inlet channel 331 for conveying the high-temperature exhaust gas of the coater 4 to the water storage tank 12; the second air inlet channel 332 is communicated with the fresh air blower 6 and the water storage tank 12, and a second air inlet switch is provided at the inlet of the second air inlet channel 332 for conveying fresh air to the water storage tank 12.

[0076] The second liquid side channel 32 is in circulation connection with the refrigerator 7, which is convenient for condensing the gas in the second gas side channel 31 of the second gas-liquid heat exchanger 3 to form condensate, so as to provide liquid supplement for the immersion tank 11.

[0077] Among them, the chiller 7 includes a chiller water inlet and a chiller water return port; the chiller water inlet is connected to the head end of the second liquid side channel 32 for delivering chilled water into the second liquid side channel 32; the chiller water return port is connected to the tail end of the second liquid side channel 32 for recovering the chilled water in the second liquid side channel 32.

[0078] Specifically, the detection device includes:

[0079] A liquid level detection device, which is arranged in the soaking tank 11 for detecting the liquid level in the soaking tank 11, and further for judging whether the battery pack is completely covered by the liquid for a continuous degumming process, and for judging that there is no liquid in the soaking tank 11 to close the liquid discharge device;

[0080] A humidity detection device, which is arranged in the soaking tank 11 for detecting the gas humidity in the soaking tank 11, and further for judging whether the battery pack is dried;

[0081] A gas detection device, which is arranged on the exhaust air channel 13 for detecting the component content of the gas in the exhaust air channel 13, and further for judging whether the gas in the degumming and sealing box 1 meets the emission standards.

[0082] Embodiment 2

[0083] Based on the same design concept, this embodiment provides a method for a degumming and drying system for lithium battery cells, including the following steps:

[0084] S1: Place the battery pack to be processed into the soaking tank 11 without liquid and seal the degumming and sealing box 1;

[0085] S2: Perform degumming treatment on the battery pack;

[0086] S21: Start the chiller 7 so that the chilled water is output from the chiller water inlet, flows through the second liquid side channel 32, and then

[0087] returns to the chiller 7 through the chiller water return port;

[0088] S22: Open the exhaust air port of the coater 4 to introduce the high-temperature exhaust gas of the coater 4, and open the first air inlet switch so that the high-temperature exhaust gas of the coater 4 enters the second gas side channel 31 through the first gas side channel 21. At this time, the temperature of the second gas side channel 31 is higher than that of the second liquid side channel 32, and the gas condenses to form condensate, which is then transported to the

[0089] water storage tank 12 through the first air inlet channel 331;

[0090] S23: Turn on the circulation pump 25 so that the condensate and degumming liquid in the water storage tank 12 enter the first liquid side channel 22 through the circulation liquid channel 23. At this time, the temperature of the first liquid side channel 22 is lower than that of the first gas side channel 21, and the liquid is heated and raised in temperature, and then

[0091] Flow back to the soaking tank 11, and start the glue removal treatment on the battery pack;

[0092] S24: When the liquid level detection device detects that the battery pack in the soaking tank 11 is completely covered by the condensate, turn off the chiller 7 and the first air inlet switch, and make the high-temperature exhaust gas of the coater 4 pass through the first gas side channel 21 and the second gas side channel 31 in sequence, and then be transported to the condensation tower 5 through the second air duct 34;

[0093] S25: Open the liquid discharge device to make the liquid in the soaking tank 11 flow into the water storage tank 12;

[0094] S26: Wait for at least 24 hours to complete the glue removal of the battery pack, and turn off the circulation pump 25;

[0095] S27: Wait statically for the liquid in the soaking tank 11 to flow into the water storage tank 12 until the liquid level detection device detects that there is no liquid in the soaking tank 11, and then turn off the liquid discharge device;

[0096] Pool 11, then turn off the liquid discharge device;

[0097] S3: Perform drying treatment on the battery pack;

[0098] S31: Open the first air inlet switch and the fan 131, and make the high-temperature exhaust gas of the coater 4 pass through the first gas side channel

[0099] 21 and the second gas side channel 31 in sequence and be transported to the glue removal sealing box 1 to dry the battery pack, and then be recycled through the exhaust air duct 13

[0100] To the condensation tower 5;

[0101] S32: When the humidity detection device detects that the humidity in the soaking tank 11 is lower than the preset value, complete the drying of the battery pack, turn off the first air inlet switch, and turn on the second air inlet switch to introduce fresh air to purify the gas in the glue removal sealing box 1;

[0102] Purification;

[0103] S33: When the gas detection device detects that the gas in the exhaust air duct 13 reaches the emission standard, turn off all the remaining equipment;

[0104] S4: Open the glue removal sealing box 1 and take out the battery pack to complete the glue removal and drying of the lithium battery cell.

[0105] In this embodiment, the temperature range of the condensate formed at the end of the second gas side channel 31 of the second gas-liquid heat exchanger 3 is 45° to 55°; the temperature range of the liquid in the first liquid side channel 22 of the first gas-liquid heat exchanger 2 is 45° to 55°, so that the temperatures of the liquid and the condensate are set within a specific range, which is convenient for the glue removal of the battery pack.

[0106] In an embodiment, when the humidity detection device detects that the gas humidity in the soaking tank 11 is lower than 20%, it can be determined that the battery pack has been dried.

[0107] In this embodiment, when the condensate in the soaking tank 11 is insufficient, the condensate is recovered from the condensation tower 5 to the first liquid side channel 22 through the replenishing liquid channel 24.

[0108] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0109] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A debinding and drying system for lithium battery cells, which is arranged between a coater and a condensation tower and is used for debinding and drying lithium batteries; characterized in that, Including: A glue-dissolving and sealing box, which is provided with a water storage tank and an immersion tank inside. The immersion tank is used to place the battery pack and the glue-dissolving liquid, and the water storage tank is used to store the glue-dissolving liquid. A liquid discharge device is arranged at the bottom of the immersion tank, and the immersion tank is located above the water storage tank. The immersion tank is communicated with the condensation tower through an exhaust air duct; A first gas-liquid heat exchanger, which is used to maintain the liquid temperature. The first gas-liquid heat exchanger includes a first gas side channel and a first liquid side channel. The first end of the first gas side channel is communicated with the exhaust port of the coater. The first end of the first liquid side channel is respectively communicated with the water storage tank through a circulating liquid channel and with the condensation tower through a supplementary liquid channel, and the end of the first liquid side channel is communicated with the immersion tank; A second gas-liquid heat exchanger, which is used to condense the high-temperature exhaust gas of the coater. The second gas-liquid heat exchanger includes a second gas side channel and a second liquid side channel. The first end of the second gas side channel is communicated with the end of the first gas side channel, and the end of the second gas side channel is communicated with the water storage tank through a first air duct and with the condensation tower through a second air duct; The second liquid side channel is communicated with the refrigerator for circulation; The first air duct is in a T shape and includes: A first air inlet channel, which is communicated with the end of the second gas side channel and the water storage tank, and is used to convey the high-temperature exhaust gas of the coater to the water storage tank. A first air inlet switch is arranged at the inlet of the first air inlet channel; A second air inlet channel, which is communicated with the fresh air blower and the water storage tank, and is used to convey fresh air to the water storage tank. A second air inlet switch is arranged at the inlet of the second air inlet channel.

2. The debinding and drying system for lithium battery cells according to claim 1, wherein, A blower is arranged on the exhaust air duct to accelerate the drying of the battery pack.

3. The debinding and drying system for lithium battery cells according to claim 1, wherein, A circulating pump is arranged on the circulating liquid channel to circulate the liquid in the water storage tank and the immersion tank.

4. A debinding and drying system for lithium battery cells according to claim 1, characterized in that, The refrigerator includes: A refrigerator water inlet, which is communicated with the first end of the second liquid side channel; A refrigerator water return port, which is communicated with the end of the second liquid side channel.

5. A debinding and drying system for a lithium battery cell according to claim 1, characterized in that, It also includes a detection device. The detection device includes: A liquid level detection device, which is arranged in the immersion tank and is used to detect the liquid height in the immersion tank; A humidity detection device, which is arranged in the immersion tank and is used to detect the gas humidity in the immersion tank; A gas detection device, which is arranged on the exhaust air duct and is used to detect the component content of the gas in the exhaust air duct.

6. The debinding and drying system for a lithium battery cell according to claim 1, wherein, The glue-dissolving and sealing box is made of metal material. A visual port is arranged on the glue-dissolving and sealing box, and the visual port is made of high-temperature resistant glass material.

7. A method for a debinding and drying system for lithium battery cells as described in claim 1, characterized in that, Including the following steps: S1: Put the battery pack to be processed into the immersion tank without liquid, and seal the glue-dissolving and sealing box; S2: Carry out glue-dissolving treatment on the battery pack; S21: Start the refrigerator to make the chilled water output from the refrigerator water inlet, flow through the second liquid side channel, and then flow back to the refrigerator through the refrigerator water return port; S22: Open the exhaust port of the coater to introduce the high-temperature exhaust gas of the coater, and open the first air inlet switch to make the high-temperature exhaust gas of the coater enter the first gas side channel, condense into condensate through the second gas side channel, and then be conveyed to the water storage tank through the first air inlet channel; S23: Open the circulating pump to make the condensate and the glue-dissolving liquid in the water storage tank enter the circulating liquid channel, flow through the first liquid side channel for heating, and then flow back to the immersion tank to start the glue-dissolving treatment on the battery pack; S24: When the liquid level detection device detects that the battery pack in the soaking pool is completely covered by the condensate, turn off the chiller and the first air inlet switch, and make the high-temperature exhaust gas of the coater pass through the first gas-side channel and the second gas-side channel in sequence, and then be transported to the condensation tower through the second air duct; S25: Turn on the liquid discharge device to make the liquid in the soaking pool flow into the water storage tank; S26: Wait for at least 24 hours to complete the debonding of the battery pack, and turn off the circulation pump; S27: Wait statically for the liquid in the soaking pool to flow into the water storage tank until the liquid level detection device detects that there is no liquid in the soaking pool, and then turn off the liquid discharge device; S3: Dry the battery pack; S31: Turn on the first air inlet switch and the fan, and make the high-temperature exhaust gas of the coater pass through the first gas-side channel and the second gas-side channel in sequence and be transported to the debonding and sealing box to dry the battery pack, and then be recycled to the condensation tower through the exhaust air duct; S32: When the humidity detection device detects that the humidity in the soaking pool is lower than the preset value, complete the drying of the battery pack, turn off the first air inlet switch, and turn on the second air inlet switch to introduce fresh air to purify the gas in the debonding and sealing box; S33: When the gas detection device detects the gas emission standard of the exhaust air duct, turn off all the remaining equipment; S4: Open the debonding and sealing box and take out the battery pack to complete the debonding and drying of the lithium battery cell.

8. The method for the debonding and drying system for lithium battery cells according to claim 7, wherein The temperature range of the condensate formed at the end of the second gas-side channel of the second gas-liquid heat exchanger is 45°-55°; The temperature range of the liquid in the first liquid-side channel of the first gas-liquid heat exchanger is 45°-55°.

9. The method of the debinding and drying system for lithium battery cells according to claim 7, characterized in that, In S23, when the condensate in the soaking pool is insufficient, the condensate is recovered from the condensation tower to the first liquid-side channel through the supplementary liquid channel.

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