Physical method for separating electrode current collector from electrode material of lithium ion battery

A lithium-ion battery, electrode current collector technology, applied in battery recycling, waste collector recycling, recycling technology and other directions, can solve problems such as high cost, unsuitable for large-scale recycling requirements, environmental pollution, etc., and achieve high recycling rate Effect

Active Publication Date: 2017-10-24
上海珮钧科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there are related recycling technologies about lithium-ion batteries, such as: Chinese patent application CN01130735.8, the invention titled "Method for recovering metals from waste lithium-ion batteries" discloses a recycling method, which Although the invention can also achieve the purpose of recovering the metals in it, high-temperature furnace roasting is used in the recovery process, and the means of adding acid to dissolve is also used. In the recovery

Method used

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  • Physical method for separating electrode current collector from electrode material of lithium ion battery
  • Physical method for separating electrode current collector from electrode material of lithium ion battery
  • Physical method for separating electrode current collector from electrode material of lithium ion battery

Examples

Experimental program
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Example Embodiment

[0022] Example 1

[0023] refer to figure 1 , the process flow of the physical method for separating the negative electrode of lithium ion battery provided by this implementation is as follows:

[0024] First, the negative electrode produced in production or separated from the waste lithium ion battery is put into a pulverizer for pulverization. The negative electrode current collector is detached;

[0025] Then, the pulverized negative electrode current collector and negative electrode material are air-selected; since the specific gravity of the negative electrode current collector is larger than that of the negative electrode material, the negative electrode current collector and the negative electrode material can be separated by air selection, and the negative electrode current collector and the negative electrode material are obtained respectively. Material.

Example Embodiment

[0026] Example 2

[0027] refer to figure 2 , the process flow of the physical method for separating the positive electrode of the lithium ion battery provided by this embodiment is as follows:

[0028] First, the positive electrode produced in production or separated from waste lithium-ion batteries is put into a pulverizer for pulverization, and the positive electrode material is separated from the positive electrode current collector through the pulverization treatment, so that the positive electrode material is separated from the positive electrode current collector. down;

[0029] Then, the pulverized positive electrode current collector and the positive electrode material are subjected to specific gravity separation; since the specific gravity of the positive electrode current collector is larger than that of the positive electrode material, when the specific gravity of the solution used for specific gravity separation is greater than that of the positive electrode mat...

Example Embodiment

[0030] Example 3

[0031] refer to image 3 , the process flow of the physical method for separating the positive and negative electrodes of a lithium ion battery provided by the present embodiment is as follows:

[0032] First, the positive and negative electrodes produced in production or separated from discarded lithium-ion batteries are put into a pulverizing device, and the positive and negative electrodes are pulverized. The negative electrode current collectors are phase-separated to obtain positive and negative electrode materials and positive and negative electrode current collectors, so that the positive and negative electrode materials are detached from the positive and negative electrode current collectors;

[0033] Then, put the pulverized positive and negative electrode materials and the positive and negative electrode current collectors into the solution for specific gravity sorting; the solution is selected from lithium bromide solution, because the specific g...

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Abstract

The invention discloses a physical method for separating an electrode current collector from an electrode material of a lithium ion battery. The method comprises the following steps of smashing a waste material of the lithium ion battery, and enabling the electrode current collector to be separated from the electrode material by a smashing effect, wherein the waste material of the lithium ion battery comprises, but not limited to, a waste lithium ion battery positive electrode, a waste lithium ion battery negative electrode, a mixture of the waste lithium ion battery positive electrode and the waste lithium ion battery negative electrode and a waste lithium ion battery. The method has the advantages of high separation efficiency, simple process, no pollution, low cost and the like, and the problems of pollution and resource of the waste lithium ion battery can be solved.

Description

technical field [0001] The invention relates to a physical method for separating an electrode collector and an electrode material of a lithium ion battery, and belongs to the technical field of battery recycling. Background technique [0002] Nowadays, due to the increasing scrapping of electronic products, the amount of scrapping lithium-ion batteries used in electronic products is also increasing. Especially with the development of electric vehicles, how to recycle lithium-ion batteries in an environmentally friendly manner is becoming more and more important. In the prior art, there are related recycling technologies about lithium-ion batteries, such as: Chinese patent application CN01130735.8, the invention titled "Method for recovering metals from waste lithium-ion batteries" discloses a recycling method, which Although the invention can also achieve the purpose of recovering the metals in it, high-temperature furnace roasting is used in the recovery process, and the me...

Claims

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Application Information

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IPC IPC(8): H01M10/54
CPCH01M10/54Y02W30/84
Inventor 王武生
Owner 上海珮钧科技有限公司
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