Recovering method and device for lithium ion battery pole piece

A lithium-ion battery and recovery method technology, which is applied in the field of lithium-ion battery pole piece recovery, can solve problems such as environmental pollution, difficult waste liquid treatment, and inability to recover collected fluid well, so as to reduce the treatment process and reduce environmental impact Effect

Active Publication Date: 2017-01-04
HEFEI GUOXUAN HIGH TECH POWER ENERGY
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  • Abstract
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Problems solved by technology

However, this method will produce a large amount of waste liquid, and it is a major difficulty in the treatment of waste liquid, which is easy to cause environmental pollution; and the collected fluid cannot be recovered well.

Method used

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  • Recovering method and device for lithium ion battery pole piece

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings and examples, in order to facilitate the understanding of the present invention, but the present invention is not limited to the listed embodiments.

[0024] A method for recycling lithium-ion battery pole pieces, comprising the following steps:

[0025] (1) The disassembled pole piece of the lithium-ion battery is flattened with a pressure roller under vacuum conditions;

[0026] (2) Pass the flattened pole piece through the laser recovery cavity equipped with a laser at an even speed, and at the same time, the laser recovery cavity is led to the protective gas nitrogen or argon, and the active material powder on the surface of the pole piece is removed by the laser. scrape down;

[0027] (3) The powder in the laser recovery cavity is sucked out and collected by the air pump, and the current collector after removing the active material enters the receiving box...

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Abstract

The invention provides a recovering method and device for a lithium ion battery pole piece. The recovering method includes the steps that the pole piece disassembled from a lithium ion battery is flattened; the flattened pole piece passes through a laser recovering cavity provided with a laser device at constant speed, and active substance powder on the surface of the pole piece is scrapped by laser; the powder in the laser recovering cavity is sucked and collected through a sucking pump, and a current collector with the active substance removed enters a material receiving box. The current collector and the active substance are separated through a pure physical method, a chemical agent does not need to be added, and the negative effect on the environment is avoided.

Description

technical field [0001] The invention relates to the field of lithium-ion batteries, in particular to a method and device for recovering pole pieces of lithium-ion batteries. Background technique [0002] With the explosive development of the new energy vehicle industry, the demand for lithium-ion batteries is growing rapidly, but lithium resources are limited, so lithium-ion batteries must be able to be recycled in the future, otherwise they cannot meet the ever-expanding new energy vehicles. market. [0003] In lithium-ion batteries, the pole piece is generally mixed with electrochemically active substances, conductive agents, adhesives, diluents and other materials into a slurry, and then coated on the current collector of the pole piece substrate material by inkjet, extrusion, printing transfer, etc. (aluminum foil or copper foil), and then baked to solidify the coated slurry, and then rolled to compact the coated slurry material, and finally cut according to the size ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54B09B3/00
CPCY02W30/84H01M10/54B09B3/00
Inventor 许涛曹利娜王晨旭
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY
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