Exhaust system for battery production

Abstract

The utility model discloses a battery production exhaust system, include: collection system, safety interlocking system and purification system, collection system, safety interlocking system and purification system are connected in proper order, collection system is used to collect the gas to be purified that battery production line generates, and through safety interlocking system will the gas to be purified delivery to purification system, purification system carries out purification to the gas to be purified and discharges to the outdoor atmosphere. Through the application of the utility model, provide a kind of exhaust system suitable for battery production line, its linkage use to collection system, safety interlocking system and purification system, the discharge and purification of harmful gas generated in the battery production process are realized, and the whole system is safe and reliable, avoids the pollution to environment and the damage to staff health.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to an exhaust system for battery manufacturing. Background Technology

[0002] Currently, due to environmental protection needs and energy shortages, the demand for power batteries is experiencing explosive growth. Although power batteries have made significant improvements in safety and performance with advancements in production technology, the production process of lithium batteries often requires the release of gases containing volatile organic compounds in key steps such as slurry mixing, electrode coating, baking and drying, liquid injection, and packaging to maintain the stability of the process environment.

[0003] However, the gases emitted often contain volatile organic compounds (VOCs) (such as N-methylpyrrolidone), electrolyte solvent vapors (such as carbonates), and trace amounts of metal dust. Direct emission of these gases could pose multiple risks. (1) Environmental pollution and regulatory pressure VOC emissions: Solvent vapors such as NMP are toxic, and long-term exposure can damage the ozone layer and harm the ecological environment. Many parts of the world (such as the EU and China) have implemented strict restrictions on VOC emissions, and companies that fail to meet the standards face hefty fines or production shutdowns. Greenhouse gas impact: Some electrolyte solvents (such as fluoroethylene carbonate) may release fluorinated greenhouse gases after decomposition, exacerbating climate change.

[0004] (2) Potential safety hazards in production Flammable and explosive risks: When the electrolyte vapor reaches a certain concentration in the air, it may explode upon contact with an open flame or static electricity. Occupational health threats: NMP vapor has chronic damage to the respiratory and nervous systems of workers, and long-term exposure may lead to illness.

[0005] Therefore, there is a lack of effective venting solutions throughout the entire battery production process. Utility Model Content

[0006] In view of this, in order to solve the above problems, the purpose of this utility model is to provide an exhaust system for battery production, including: a collection system, a safety interlock system and a purification system, wherein the collection system, the safety interlock system and the purification system are connected in sequence, the collection system is used to collect the gas to be purified generated by the battery production line, and the gas to be purified is transported to the purification system through the safety interlock system, and the purification system purifies the gas to be purified and discharges it to the outdoor atmosphere; The safety interlock system includes: a fan, at least one first branch pipe, at least one second branch pipe, and at least one first valve. The output end of the fan is connected to the purification system. The first branch pipe is connected between the input end of the fan and the collection system. One end of the second branch pipe is connected to the first branch pipe, and the other end of the second branch pipe is connected to the outdoor atmosphere. The first valve is installed on the second branch pipe.

[0007] In another preferred embodiment, the collection system includes at least one third branch pipe and at least one second valve, one end of the third branch pipe being connected to the first branch pipe, the second valve being disposed on the third branch pipe, and the other end of the third branch pipe being disposed near the battery production line.

[0008] In another preferred embodiment, the collection system further includes: a first control module and at least one pressure gauge, the pressure gauge being disposed on the third branch pipe, the pressure gauge being communicatively connected to the first control module, and the first control module being communicatively connected to the second valve.

[0009] In another preferred embodiment, the collection system further includes at least one vacuum pump disposed on the battery production line and connected to the other end of the third branch pipe.

[0010] In another preferred embodiment, the system further includes a second control module, which is communicatively connected to the fan and to the first valve.

[0011] In another preferred embodiment, a plurality of first branch pipes are connected in parallel to the input end of the fan, each first branch pipe is connected to a second branch pipe, and each second branch pipe is connected to a first valve.

[0012] In another preferred embodiment, several of the third branches are arranged in parallel, and each of the third branches is provided with a second valve and a pressure gauge.

[0013] In another preferred embodiment, the battery production line includes one or more of the following: a slurry mixing device, a baking device, a liquid injection device, and a high-temperature formation device.

[0014] In another preferred embodiment, the slurry mixing equipment, and / or the baking equipment, and / or the liquid injection equipment, and / or the high-temperature formation equipment are equipped with one or more of the vacuum pumps.

[0015] In another preferred embodiment, the purification system is a VOC purification system.

[0016] Because this utility model adopts the above-mentioned technical solution, it has the following positive effects compared with the prior art: By applying this utility model, an exhaust system suitable for battery production lines is provided. Through the coordinated use of a collection system, a safety interlock system, and a purification system, the system achieves the emission and purification of harmful gases generated during battery production. The entire system is safe and reliable, with a high degree of automation, avoiding environmental pollution and harm to the health of workers. In particular, it can better meet gas emission standards. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an exhaust system for battery production according to the present invention.

[0018] In the attached image: 10. Collection system; 20. Safety interlock system; 30. Purification system; 40. Battery production line; 21. Fan; 22. First branch pipe; 23. Second branch pipe; 24. First valve; 11. Third branch pipe; 12. Second valve; 13. Pressure gauge; 14. Vacuum pump; 41. Slurry mixing equipment; 42. Baking equipment; 43. Liquid injection equipment; 44. High-temperature formation equipment. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "back", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] It should be noted that the terms "horizontal" and "vertical" in this utility model are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".

[0022] like Figure 1The diagram illustrates a preferred embodiment of an exhaust system for battery production, comprising: a collection system 10, a safety interlock system 20, and a purification system 30. The collection system 10, safety interlock system 20, and purification system 30 are connected sequentially. The collection system 10 collects the gas to be purified generated by the battery production line 40 and conveys it to the purification system 30 via the safety interlock system 20. The purification system 30 purifies the gas and discharges it into the outdoor atmosphere. Further, the collection system 10 collects the gas to be purified generated at a designated location on the battery production line 40, and then conveys it to the purification system 30 via the safety interlock system 20 for purification treatment until it meets emission standards before being discharged into the outdoor atmosphere.

[0023] Furthermore, as a preferred embodiment, the safety interlock system 20 includes: a fan 21, at least one first branch pipe 22, at least one second branch pipe 23, and at least one first valve 24. The output end of the fan 21 is connected to the purification system 30. The first branch pipe 22 is connected between the input end of the fan 21 and the collection system 10. One end of the second branch pipe 23 is connected to the first branch pipe 22, and the other end of the second branch pipe 23 is connected to the outdoor atmosphere. The first valve 24 is disposed on the second branch pipe 23. Furthermore, the second branch pipe 23 and the first valve 24 allow for the refusal of fluid delivery to the purification system 30 via the fan 21 when necessary. The second branch pipe 23 is used for emergency discharge of fluid to the outdoor atmosphere in advance.

[0024] Furthermore, in a preferred embodiment, the collection system 10 includes at least one third branch pipe 11 and at least one second valve 12. One end of the third branch pipe 11 is connected to the first branch pipe 22, and the second valve 12 is provided on the third branch pipe 11. The other end of the third branch pipe 11 is located close to the battery production line 40. Further, the gas generated at the battery production line 40 is transported to the safety interlock system 20 through the location of the other end of the third branch pipe 11.

[0025] Furthermore, in a preferred embodiment, the collection system 10 further includes: a first control module and at least one pressure gauge 13. The pressure gauge 13 is disposed on the third branch pipe 11 and is communicatively connected to the first control module. The first control module is communicatively connected to the second valve 12. Further, the pressure gauge 13 acquires the fluid pressure in the third branch pipe 11 and transmits the corresponding pressure data to the first control module. The first control module then controls the opening of the second valve 12, thereby controlling the pressure within the third branch pipe 11 and reducing the energy consumption of the fan 21. That is, when the pressure value increases, the opening of the second valve 12 increases; when the pressure value decreases, the opening of the second valve 12 decreases.

[0026] Furthermore, as a preferred embodiment, the first control module can also be communicatively connected to the fan 21 to control the power of the fan 21 based on pressure data.

[0027] Furthermore, as a preferred embodiment, the collection system 10 also includes at least one vacuum pump 14, which is disposed on the battery production line 40 and connected to the other end of the third branch pipe 11. Furthermore, the vacuum pump 14 can provide sufficient vacuum suction to effectively deliver the exhaust gas into the third branch pipe 11.

[0028] Furthermore, as a preferred embodiment, it also includes: a second control module, which is communicatively connected to the fan 21 and the first valve 24. The second control module is further used to acquire the operating status information of the fan 21; when the fan 21 starts normally, the first valve 24 is closed, and fluid is normally transported to the fan 21 through the first branch pipe 22; when the fan 21 stops working or malfunctions, the first valve 24 is opened, and fluid is directly and urgently released externally through the second branch pipe 23 to avoid excessive pressure in the pipeline and potential risks.

[0029] Furthermore, as a preferred embodiment, the first control module and the second control module can be integrated, for example, by setting up a PLC system that includes the aforementioned first control module and second control module.

[0030] Furthermore, in a preferred embodiment, several first branch pipes 22 are connected in parallel to the input end of the fan 21, each first branch pipe 22 is connected to a second branch pipe 23, and each second branch pipe 23 is connected to a first valve 24. Further, the several first branch pipes 22 can be connected in parallel to the input end of the fan 21 through a main pipe to collect exhaust gases from different directions and deliver them together to the purification system 30.

[0031] Furthermore, as a preferred embodiment, several third branch pipes 11 are arranged in parallel, and each third branch pipe 11 is provided with a second valve 12 and a pressure gauge 13.

[0032] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model.

[0033] Based on the above, this utility model also has the following embodiments: In a further embodiment of this utility model, the battery production line 40 includes one or more of the following: a slurry mixing device 41, a baking device 42, a liquid injection device 43, and a high-temperature formation device 44. Further, the slurry mixing device 41 is used for the slurry mixing process of the battery, the baking device 42 is used for baking and drying the battery electrodes, the liquid injection device 43 is used for liquid injection and encapsulation of the battery, and the high-temperature formation device 44 is used for the formation treatment of the battery.

[0034] In a further embodiment of this utility model, one or more vacuum pumps 14 are provided in conjunction with the slurry mixing equipment 41, and / or baking equipment 42, and / or liquid injection equipment 43, and / or high-temperature formation equipment 44. Furthermore, one or more vacuum pumps 14 can be provided at different equipment involved in battery production to participate in the exhaust of the corresponding equipment; when multiple vacuum pumps 14 are provided, they can be connected in parallel at the third branch pipe 11.

[0035] In a further embodiment of this utility model, the branch pipe can be made of PP material or stainless steel material.

[0036] In a further embodiment of this utility model, the purification system 30 is a VOC purification system 30. Furthermore, the purification system 30 is at least used for the purification and removal of VOCs, preferably by physical or chemical methods, specifically alkaline washing spraying process, and / or activated carbon absorption process, and / or UV photolysis process, etc.

[0037] In a further embodiment of this utility model, the first valve 24 and the second valve 12 can be electric valves or pneumatic valves, and the corresponding valves will automatically open fully in the event of power failure or gas failure.

[0038] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A venting system for battery production, characterized in that, include: The system comprises a collection system, a safety interlock system, and a purification system, which are connected in sequence. The collection system is used to collect the gas to be purified generated by the battery production line and to transport the gas to be purified to the purification system through the safety interlock system. The purification system purifies the gas to be purified and then discharges it into the outdoor atmosphere. The safety interlock system includes: a fan, at least one first branch pipe, at least one second branch pipe, and at least one first valve. The output end of the fan is connected to the purification system. The first branch pipe is connected between the input end of the fan and the collection system. One end of the second branch pipe is connected to the first branch pipe, and the other end of the second branch pipe is connected to the outdoor atmosphere. The first valve is installed on the second branch pipe.

2. The exhaust system for battery production according to claim 1, characterized in that, The collection system includes at least one third branch pipe and at least one second valve. One end of the third branch pipe is connected to the first branch pipe, and the second valve is provided on the third branch pipe. The other end of the third branch pipe is located near the battery production line.

3. The exhaust system for battery production according to claim 2, characterized in that, The collection system further includes: a first control module and at least one pressure gauge, the pressure gauge being disposed on the third branch pipe, the pressure gauge being communicatively connected to the first control module, and the first control module being communicatively connected to the second valve.

4. The exhaust system for battery production according to claim 2, characterized in that, The collection system further includes at least one vacuum pump, which is installed on the battery production line and connected to the other end of the third branch pipe.

5. The exhaust system for battery production according to claim 1, characterized in that, Also includes: The second control module is communicatively connected to the fan and the first valve.

6. The exhaust system for battery production according to claim 1, characterized in that, Several first branch pipes are connected in parallel to the input end of the fan, each first branch pipe is connected to a second branch pipe, and each second branch pipe is connected to a first valve.

7. The exhaust system for battery production according to claim 3, characterized in that, Several third branch pipes are connected in parallel, and each third branch pipe is equipped with a second valve and a pressure gauge.

8. The exhaust system for battery production according to claim 4, characterized in that, The battery production line includes one or more of the following: slurry mixing equipment, baking equipment, liquid injection equipment, and high-temperature formation equipment.

9. The exhaust system for battery production according to claim 8, characterized in that, The slurry mixing equipment, and / or the baking equipment, and / or the liquid injection equipment, and / or the high-temperature formation equipment are equipped with one or more of the vacuum pumps.

10. The exhaust system for battery production according to claim 1, characterized in that, The purification system is a VOC purification system.

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