Lithium battery coating drying device

Abstract

The utility model provides a lithium battery coating drying device which comprises a machine box, a penetrating conveying assembly is arranged in the machine box, a drying assembly is arranged above the conveying assembly, a detachable purifying assembly is arranged on one side of the lower portion of the conveying assembly, a monitoring assembly is arranged above the purifying assembly, and the machine box comprises a purifying bin. A waste channel is arranged on one side of the purification bin and communicates with the conveying assembly, the conveying assembly comprises a chain net conveying belt, the chain net conveying belt is used for conveying lithium batteries covered with coatings, the purification assembly comprises a purification box, and the purification bin is used for containing the purification box. The drying efficiency and the energy utilization rate are remarkably improved, meanwhile, effective capture and treatment of VOCs such as NMP are ensured, and environmental pollution and potential safety hazards are greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lithium battery production, especially to a lithium battery coating drying device. BACKGROUND

[0002] In the lithium battery manufacturing process, the drying of electrode coating is a crucial step, which directly affects the quality and performance of the battery. However, these methods have the problems of low efficiency, high energy consumption, and difficulty in control. Especially when dealing with solvents containing volatile organic compounds (VOCs) such as N-methyl pyrrolidone (NMP), it is easy to cause environmental pollution and safety hazards. With the increasingly stringent environmental regulations and the demand for technological progress, it is particularly urgent to develop a lithium battery coating drying device that is efficient, energy-saving, and has good waste gas treatment capacity.

[0003] In the traditional drying chamber, there is no system specially designed to capture and treat harmful gases volatilized from the coating. These gases are directly discharged into the workshop air, which not only affects the health of workers but also may violate emission standards. The traditional purification assembly is not easy to replace, increasing the workload and cost of daily maintenance. SUMMARY

[0004] The main purpose of the utility model is to provide a lithium battery coating drying device, which solves the problems of low drying efficiency of lithium battery coating and lack of gas detection device.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of a lithium battery coating drying device, which includes a machine case, a through conveying assembly inside the machine case, an upper drying assembly of the conveying assembly, a detachable purification assembly on one side below the conveying assembly, and a monitoring assembly above the purification assembly.

[0006] The machine case includes a purification bin, and one side of the purification bin is provided with a waste channel that is connected with the conveying assembly.

[0007] The conveying assembly includes a chain mesh conveyor belt, which is used to convey lithium batteries covered with coating.

[0008] The purification assembly includes a purification box, and the purification bin is used to place the purification box.

[0009] In the preferred scheme, the purification bin is connected with the conveying assembly, and a first filter screen is arranged between the purification bin and the conveying assembly to prevent particulate impurities from entering the purification bin.

[0010] The first filter screen is a dense stainless steel screen.

[0011] In the preferred scheme, one side of the bottom of the waste channel is provided with a waste outlet, which is used to convey the collected waste to the outside of the equipment.

[0012] In the preferred embodiment, the drying assembly comprises a plurality of air blowers, which blow air to the chain conveyor belt to facilitate air drying of the coating;

[0013] An electric heating wire is arranged between the air blower and the chain conveyor belt, which heats the air blown by the air blower to further facilitate air drying of the coating.

[0014] In the preferred embodiment, the outer layer of the air blower is provided with an air blower shell, and a second filter screen is arranged on the top of the air blower shell to prevent foreign matters from being sucked into the air blower;

[0015] The second filter screen is made of filter cotton.

[0016] In the preferred embodiment, the inside of the purification box is provided with activated carbon, and the side of the purification box facing outward is provided with a plurality of air outlet holes for connecting with an air extraction device outside;

[0017] The detachable purification box facilitates replacement of the activated carbon.

[0018] In the preferred embodiment, the monitoring assembly comprises a plurality of air extraction pipes, and the bottom of each air extraction pipe is provided with a gas collection hood connected with the top of the activated carbon;

[0019] The monitoring assembly is used for regularly detecting harmful gases in the equipment during the drying process, and the activated carbon in the purification assembly needs to be replaced in time when the concentration of the harmful gases exceeds the standard.

[0020] The lithium battery coating drying device has the following beneficial effects: by integrating the efficient drying and purification system, the drying efficiency and energy utilization rate are significantly improved, the effective capture and treatment of VOCs such as NMP are ensured, the environmental pollution and safety hazards are greatly reduced, the detachable purification assembly design facilitates maintenance and replacement, the operating cost is reduced, the real-time monitoring system ensures that the concentration of harmful gases is always within a safe range, and the safety of workers and the production environment is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model will be further described in connection with the drawings and embodiments:

[0022] Fig. 1 is the shaft side view of the drying device of the utility model;

[0023] Fig. 2 is the sectional view of the drying device of the utility model;

[0024] Fig. 3 is the sectional view of the drying device of the utility model in another direction.

[0025] In the diagram: Chassis 1; Purification chamber 101; Gas collection duct 102; First filter screen 103; Waste channel 104; Waste outlet 105; Conveying assembly 2; Chain mesh conveyor belt 201; Drying assembly 3; Fan housing 301; Fan 302; Second filter screen 303; Heating wire 304; Purification assembly 4; Purification box 401; Air outlet 402; Activated carbon 403; Monitoring assembly 5; Exhaust pipe 501; Gas collection hood 502. Detailed Implementation

[0026] Example 1

[0027] like Figs. 1-3 As shown, a lithium battery coating drying device includes a housing 1, a through conveying assembly 2 inside the housing 1, a drying assembly 3 above the conveying assembly 2, a detachable purification assembly 4 on one side below the conveying assembly 2, and a monitoring assembly 5 above the purification assembly 4.

[0028] The chassis 1 includes a purification chamber 101, and a waste channel 104 is provided on one side of the purification chamber 101. The waste channel 104 is connected to the conveying assembly 2.

[0029] The conveying assembly 2 includes a chain conveyor belt 201 for conveying lithium batteries with a coating.

[0030] The purification component 4 includes a purification box 401 and a purification chamber 101 for placing the purification box 401.

[0031] In the preferred embodiment, the purification chamber 101 is connected to the conveying component 2, and a first filter screen 103 is provided between the purification chamber 101 and the conveying component 2. The first filter screen 103 is used to prevent particulate matter from entering the purification chamber 101.

[0032] The first filter screen 103 is a dense stainless steel mesh.

[0033] In a preferred embodiment, a waste outlet 105 is provided on one side of the bottom of the waste channel 104, which is used to transport the collected waste outside the equipment.

[0034] In the preferred embodiment, the drying component 3 includes multiple fans 302, which blow air onto the conveyor belt 201 to help dry the coating.

[0035] An electric heating wire 304 is provided between the blower 302 and the chain conveyor belt 201. The electric heating wire 304 heats the air blown out by the blower 302, which further helps the coating to dry.

[0036] In the preferred embodiment, the outer layer of the fan 302 is provided with a fan housing 301, and a second filter screen 303 is installed on the top of the fan housing 301. The second filter screen 303 is used to prevent external debris from being sucked into the fan 302.

[0037] The second filter screen 303 is filter cotton.

[0038] In the preferred embodiment, the inside of the purification box 401 is provided with activated carbon 403, and the side of the purification box 401 facing outward is provided with a plurality of air outlet holes 402 for connecting with the air extraction equipment outside.

[0039] The detachable purification box 401 facilitates the subsequent replacement of activated carbon.

[0040] In the preferred embodiment, the monitoring assembly 5 includes a plurality of air extraction pipes 501, and the bottom of the air extraction pipe 501 is provided with a gas collection hood 502 connected with the top of the activated carbon 403.

[0041] The monitoring assembly 5 is used for regularly detecting harmful gases in the equipment during the drying process, and the activated carbon 403 in the purification assembly 4 needs to be replaced in time when the concentration of harmful gases exceeds the standard.

[0042] The specific use process of the lithium battery coating drying device is as follows: during the drying process of the lithium battery coating, the chain mesh conveyor belt 201 continuously conveys the lithium battery covered with the coating to the lower side of the drying assembly 3, the hot air flow is formed after the air blown by the fan 302 is heated by the electric heating wire 304, and the lithium battery on the chain mesh conveyor belt 201 is uniformly blown, so that the evaporation of the solvent such as NMP in the coating is accelerated.

[0043] The evaporated solvent and water vapor move downward along the airflow, pass through the first filter screen 103 (dense stainless steel screen), and prevent particulate impurities from entering the purification bin 101. Subsequently, the waste gas containing volatile organic compounds (VOCs) enters the purification bin 101.

[0044] In the purification bin 101, the waste gas is guided to the purification box 401, and the activated carbon 403 built-in the purification box 401 effectively adsorbs the harmful gases such as VOCs, ensures the safety of the discharged air, and the purified air is discharged through the air outlet hole 402 and connected with the air extraction equipment outside, so as to ensure continuous ventilation.

[0045] At the same time, the air extraction pipe 501 and the gas collection hood 502 in the monitoring assembly 5 regularly collect samples to detect the concentration of harmful gases, and once it is found that the concentration exceeds the standard, the system prompts to replace the activated carbon 403 in the purification box 401 in time, so as to maintain the high purification performance, and the waste material channel 104 collects and discharges any residues from the waste material outlet 105, so as to maintain the internal cleanliness.

[0046] The above-mentioned embodiments are only preferred technical solutions of the present application, and should not be regarded as limitations of the present application. The protection scope of the present application should be the technical solutions recited in the claims, including equivalent replacement solutions of the technical features recited in the claims. That is, the equivalent replacement improvements within this range are also within the protection scope of the present application.

Claims

1. A lithium battery coating drying apparatus, characterized by: The application relates to a lithium battery coating drying device, which comprises a cabinet (1), the inside of the cabinet (1) is provided with a conveying assembly (2) penetrating through, the upper portion of the conveying assembly (2) is provided with a drying assembly (3), the lower portion of the conveying assembly (2) is provided with a detachable purification assembly (4) on one side, and the upper portion of the purification assembly (4) is provided with a monitoring assembly (5). The cabinet (1) comprises a purification bin (101), one side of the purification bin (101) is provided with a waste channel (104), and the waste channel (104) is communicated with the conveying assembly (2). The conveying assembly (2) comprises a chain mesh conveying belt (201), and the chain mesh conveying belt (201) is used for conveying lithium batteries covered with a coating. The purification assembly (4) comprises a purification box (401), and the purification bin (101) is used for placing the purification box (401).

2. The lithium battery coating drying device according to claim 1, characterized in that: The purification bin (101) is communicated with the conveying assembly (2), a first filter screen (103) is arranged between the purification bin (101) and the conveying assembly (2), and the first filter screen (103) is used for preventing particles and sundries from entering the purification bin (101). The first filter screen (103) is a dense stainless steel screen.

3. The lithium battery coating drying apparatus of claim 1, wherein: A waste outlet (105) is arranged on one side of the bottom of the waste channel (104), and the waste outlet (105) is used for conveying collected waste to the outside of the equipment.

4. The lithium battery coating drying apparatus of claim 1, wherein: The drying assembly (3) comprises a plurality of fans (302), the fans (302) blow air to the chain mesh conveying belt (201), and the blowing is helpful to air drying of the coating. An electric heating wire (304) is arranged between the fan (302) and the chain mesh conveying belt (201), the electric heating wire (304) heats the air blown by the fan (302), and the heating is further helpful to air drying of the coating.

5. The lithium battery coating drying apparatus of claim 4, wherein: A fan shell (301) is arranged on the outer layer of the fan (302), a second filter screen (303) is arranged on the top of the fan shell (301), and the second filter screen (303) is used for preventing sundries outside from being sucked into the fan (302). The second filter screen (303) is filter cotton.

6. The lithium battery coating drying apparatus of claim 1, wherein: The inside of the purification box (401) is provided with activated carbon (403), one side of the purification box (401) facing the outside is provided with a plurality of air outlets (402), and the air outlets (402) are used for being connected with external air extraction equipment. The detachable purification box (401) is convenient for subsequent replacement of the activated carbon.

7. The lithium battery coating drying apparatus of claim 1, wherein: The monitoring assembly (5) comprises a plurality of air extraction pipes (501), the bottom of each air extraction pipe (501) is provided with a gas collection cover (502), and the gas collection cover (502) is connected with the top of the activated carbon (403). The monitoring assembly (5) is used for regularly detecting harmful gases in the equipment during the drying process, and when the concentration of the harmful gases exceeds the standard, the activated carbon (403) in the purification assembly (4) needs to be replaced in time.

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