CN-224225815-U - Discharging system

Abstract

The utility model belongs to the technical field of batteries, and discloses a blanking system which comprises a storage device, a detection device, a controller and a protection device, wherein the detection device and the protection device are respectively arranged on the storage device and are respectively connected with the controller, the detection device is used for detecting the pressure in the storage device and the concentration of oxidizing gas and sending the pressure and the concentration of the oxidizing gas to the controller, and the protection device is used for controlling the flow of the protective gas entering the storage device according to a pressure signal and a gas concentration signal received by the controller and removing the oxidizing gas in the storage device. The storage device is provided with the protection device, and the protection device is gradually filled with nitrogen to remove oxygen, so that oxidative degradation reaction of raw materials to be prepared due to long-time exposure to air is avoided, and the overall performance and the service life of the lithium battery are effectively ensured.

Inventors

• YANG ZEHUI
• WU QIANBIN
• ZHAO ZHILIANG
• FENG JIANHANG
• Pang Fengxuan

Assignees

• 孚能科技(镇江)有限公司

Dates

Publication Date

20260512

Application Date

20250528

Claims (9)

1. 1. The blanking system is characterized by comprising a storage device, a detection device, a controller and a protection device; The detection device and the protection device are respectively arranged on the storage device, and are respectively connected with the controller; The detection device is used for detecting the pressure in the storage device and the concentration of the oxidizing gas and sending the pressure and the concentration of the oxidizing gas to the controller; The protective device is used for controlling the flow of protective gas entering the storage device according to the pressure signal and the gas concentration signal received by the controller and exhausting the oxidizing gas in the storage device.
2. 2. The blanking system of claim 1 wherein said storage means includes a storage tank and a stirring member, said detecting means includes a pressure detecting member and a gas concentration detecting member, said stirring member, said pressure detecting member and said gas concentration detecting member are disposed on said storage tank, respectively, and said stirring member, said pressure detecting member and said gas concentration detecting member are disposed in spaced relation to each other, said pressure detecting member is configured to detect a pressure in said storage tank, and said gas concentration detecting member is configured to detect a concentration of said oxidizing gas in said storage tank.
3. 3. The blanking system of claim 2, wherein the detecting device further includes a pressure relief member disposed on the storage tank, and the pressure relief member is disposed in correspondence with the pressure detecting member and the gas concentration detecting member, respectively.
4. 4. The blanking system of claim 2, wherein the protection device includes a gas pipe disposed on the storage tank, the gas pipe being disposed in correspondence with the stirring member, and a first solenoid valve disposed on the gas pipe and connected to the controller.
5. 5. The blanking system of claim 2 further including a feed device and a blending tank, the blending tank being disposed in correspondence with the storage tank, the feed device being connected to the controller, and the storage tank being connected to the blending tank by the feed device.
6. 6. The blanking system of claim 5 wherein the delivery device includes a discharge pump and a discharge conduit, the discharge pump is connected to the controller, the discharge pump is respectively disposed in correspondence with the agitator tank and the storage tank, and the storage tank is connected to the discharge conduit through the discharge pump, the discharge conduit is disposed on a side of the discharge pump remote from the storage tank and is connected to the agitator tank.
7. 7. The blanking system of claim 6 wherein the material delivery apparatus further includes a second solenoid valve, the second solenoid valve being connected to the controller, and the second solenoid valve being disposed at an end of the discharge conduit remote from the discharge pump.
8. 8. The blanking system of claim 6, wherein the inner wall of the discharge pipe is coated with a coating of a low surface energy material, the coating extending along the entire perimeter of the discharge pipe.
9. 9. The blanking system of claim 8, wherein the plating surface energy is less than or equal to 50mN/m.

Description

Discharging system Technical Field The utility model relates to the technical field of batteries, in particular to a blanking system. Background In the manufacturing process of lithium ion batteries, SBR (styrene butadiene rubber emulsion) is one of key raw materials, and plays a vital role in the preparation of negative electrode slurry. However, SBR tanks of conventional SBR automatic blanking systems are typically in direct communication with the atmosphere, lacking effective oxygen barrier measures, resulting in SBR being susceptible to oxidative degradation upon prolonged exposure to air, thereby affecting its adhesive properties and ultimately leading to battery failure. Disclosure of utility model The utility model mainly aims to provide a blanking system, and aims to solve the technical problems that an existing SBR storage tank is usually directly communicated with the atmosphere, so that the SBR is subjected to oxidative degradation after being contacted with oxygen for a long time, the bonding performance of the SBR is reduced, and the battery failure is caused. In order to achieve the above object, the present utility model provides a blanking system, which includes a storage device, a detection device, a controller and a protection device; The detection device and the protection device are respectively arranged on the storage device, and are respectively connected with the controller; The detection device is used for detecting the pressure in the storage device and the concentration of the oxidizing gas and sending the pressure and the concentration of the oxidizing gas to the controller; The protective device is used for controlling the flow of protective gas entering the storage device according to the pressure signal and the gas concentration signal received by the controller and exhausting the oxidizing gas in the storage device. Further, the storage device comprises a storage tank and a stirring part, the detection device comprises a pressure detection part and a gas concentration detection part, the stirring part, the pressure detection part and the gas concentration detection part are respectively arranged on the storage tank, the stirring part, the pressure detection part and the gas concentration detection part are mutually arranged at intervals, the pressure detection part is used for detecting the pressure in the storage tank, and the gas concentration detection part is used for detecting the concentration of the oxidizing gas in the storage tank. Further, the detection device further comprises a pressure relief component, the pressure relief component is arranged on the storage tank, and the pressure relief component is respectively arranged corresponding to the pressure detection component and the gas concentration detection component. Further, the protection device comprises a gas pipeline and a first electromagnetic valve, wherein the gas pipeline is arranged on the storage tank, the gas pipeline is correspondingly arranged with the stirring component, and the first electromagnetic valve is arranged on the gas pipeline and is connected with the controller. Further, the blanking system further comprises a material conveying device and a stirring tank, the stirring tank is correspondingly arranged with the material storage tank, the material conveying device is connected with the controller, and the material storage tank is connected with the stirring tank through the material conveying device. Further, the material conveying device comprises a material discharging pump and a material discharging pipeline, the material discharging pump is connected with the controller, the material discharging pump is respectively and correspondingly arranged with the stirring tank and the material storage tank, the material storage tank is connected with the material discharging pipeline through the material discharging pump, and the material discharging pipeline is arranged on one side, far away from the material storage tank, of the material discharging pump and is connected with the stirring tank. Further, the material conveying device further comprises a second electromagnetic valve, the second electromagnetic valve is connected with the controller, and the second electromagnetic valve is arranged at one end, far away from the discharge pump, of the discharge pipeline. Further, a coating of a low surface energy material is coated on the inner wall of the discharge pipe, and the coating extends along the whole circumference direction of the discharge pipe. Further, the coating material is one or more of fluorocarbon, silicon-based, carbon-based coating and metal oxide hydrophobic modified material. Further, the surface energy of the plating layer is less than or equal to 50mN/m. The beneficial effects are that: The blanking system comprises a storage device, a detection device, a controller and a protection device, wherein the detection device and the protection device are respectively arranged