Lithium battery positive and negative electrode feeding pipeline maintenance method

Abstract

The invention relates to the technical field of lithium battery positive and negative electrode feeding pipelines, in particular to a lithium battery positive and negative electrode feeding pipeline maintenance method. According to the method, a base, a control cabinet, a backflow device, a cleaning device and a filtering device are included, wherein the control cabinet is fixedly connected to theright end of the base, the backflow device is fixedly connected to one end of the base, the cleaning device is fixedly connected to the inner side of the backflow device, the filtering device is fixedly connected to the top end of the based, and the filtering device is in communication with the backflow device. According to the method, through arrangement of a first ball valve, a second ball valve, a material storage tank body, a diaphragm pump and the like, when a slurry circulation process is started, the first ball valve and a fifth ball valve are closed, the second ball valve and a fourthball valve are opened at the same time, in a normal production process, through the first ball valve and the fifth ball valve, it is guaranteed that slurry can flow into the storage tank body from aslurry mixing machine and then reach a small coating storage tank body and a coating die head, at the moment, a backflow system temporarily stops working, and a slurry circulating backflow program canbe started once production is stopped.

Description

technical field [0001] The invention relates to the technical field of lithium battery positive and negative electrode feeding pipelines, in particular to a maintenance method for lithium battery positive and negative electrode feeding pipelines. Background technique [0002] At present, the subsidy policy of the lithium-ion battery industry is adjusted, the market is more open, the competition inside and outside the industry is becoming more and more fierce, and the market concentration is getting higher and higher. In order to seize market share, manufacturers can effectively reduce costs, improve competitive advantages and increase profit margins. , have gradually moved towards a fully intelligent automated large-scale production layout, and the production capacity has been greatly increased. The slurry feeding method during coating has also changed from manual feeding to automatic feeding system. The downtime is ≤10h, the slurry in the pipeline is basically in a flowing ...

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Problems solved by technology

[0002] At present, the subsidy policy of the lithium-ion battery industry is adjusted, the market is more open, the competition inside and outside the industry is becoming more and more fierce, and the market concentration is getting higher and higher. In order to seize market share, manufacturers can effectively reduce costs, improve competitive advantages and increase profit margins. , have gradually moved towards a fully intelligent automated large-scale production layout, and the production capacity has been greatly increased. The slurry feeding method during coating has also changed from manual feeding to automatic feeding system. If the automatic feeding system does not stop or stops temporarily, The downtime is ≤10h, the slurry in the pipeline is basically in a flowing state, and the slurry is not easy to settle and form walls. There will be different degrees of settlement, resulting in a decrease in the flow rate of the pipeline, and the mixing of the sediment increases the large particles in the slurry, the filter device is easy to block, and the amount of slurry at the outlet of the screw pump will fluctuate greatly, which will lead to coating The density stability of the cloth surface is poor, and the number of scratches on the coating material surface increases significantly, and the defect rate increases significantly. Therefore, the demand for maintenance methods for the positive and negative electrodes of lithium batteries is increasing day by day

[0003] The slurry automatic feeding pipeline for the positive and negative electrode coating of lithium batteries is long and thin. If frequent production shutdowns lead to the slurry settling during production and application, the slurry in the pipeline will form a wall , leading to a decrease in pipeline flow. The current cleaning method is to remove the pipeline and manually clean it in sections. The labor intensity is high, and the cleaning is not clean. It is easy to introduce impurities such as rag debris, etc., which will affect the quality of the slurry in subsequent production and Therefore, in view of the above problems, a maintenance method for the feeding pipeline of the positive and negative electrodes of the lithium battery is proposed

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