Treatment method for waste lithium-ion battery

A technology of lithium ion battery and treatment method, applied in the field of waste lithium ion battery treatment, can solve the problems of online production of active substances, neglect of recycling treatment, secondary environmental pollution, etc., so as to increase battery recycling treatment and shorten production process , the effect of strong applicability

Inactive Publication Date: 2016-07-20
CHINA ELECTRONICS ENG DESIGN INST
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Problems solved by technology

[0008] The treatment methods of waste lithium-ion batteries in the prior art are all focused on the recovery of positive electrode materials, non-ferrous metals, etc., or the treatment methods can only be applied to specific waste lithium-ion batteries, ignoring the recovery and treatment of electrolytes and other

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  • Treatment method for waste lithium-ion battery

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[0033] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0034] like figure 1 as shown, figure 1 A flow chart of a method for treating a spent lithium-ion battery provided by an embodiment of the present invention.

[0035] The embodiment of the present invention provides a kind of processing method of waste lithium ion battery, and this method comprises the following steps:

[0036] Disassemble the waste lithium-ion battery to obtain the shell, tabs and battery core;

[0037] Pulverize the battery core to obtain a solid mixture, electrolyte, and diaphragm;

[0038] Sorting and filtering the obtained solid mixture, electrolyte and diaphragm to obtain a solid mixture;

[0039] Dissolving and removing the binder in...

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Abstract

The invention relates to the technical field of comprehensive utilization of resources and discloses a treatment method for a waste lithium-ion battery. The method comprises the following steps: carrying out disassembling, discharging, breaking, crushing and sorting; carrying out alkaline transfer, acid dissolution and impurity removal on the sorted electrode material; and then carrying out chemical separation through pretreatment on the waste lithium-ion battery, wherein extraction and separation are a key step; partial cobalt is separated from lithium to obtain a nickel-cobalt-lithium, nickel-cobalt or nickel-cobalt-manganese mixed salt, a lithium salt and a cobalt salt; mixed sulfate regenerates a cathode material through chemical synthesis; an electrolyte and the cathode material can be obtained in the overall treatment process; the recovery rate of the cathode material is improved; and the recovery purity of copper, aluminum and the like are improved. In addition, the cathode material is directly produced; the production process is shortened; and construction of the circulating industry chain of battery production, battery recovery treatment and battery production is increased.

Description

technical field [0001] The invention relates to the technical field of energy saving and environmental protection, in particular to a method for treating waste lithium ion batteries. Background technique [0002] Lithium-ion battery is a green battery with a series of excellent performances. It has been widely used in civil and military applications such as mobile phones, notebook computers, video cameras, and digital cameras since it came out more than 10 years ago. However, its lifespan is only about 3 years. With the widespread application of lithium-ion batteries, a large number of them have entered the stage of failure and recycling. How to recycle waste lithium-ion batteries and recycle them has become a common concern of the society. Recycling waste lithium-ion batteries can not only solve a series of environmental problems caused by waste batteries, but also recycle non-ferrous metals in batteries, which can effectively alleviate the shortage of resources. [0003] ...

Claims

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Application Information

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IPC IPC(8): H01M10/54
CPCY02W30/84
Inventor 韩业斌熊岳杨敬增丁涛曾庆禄窦晨池莉肖雪影陈利廉啟合
Owner CHINA ELECTRONICS ENG DESIGN INST
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