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Treatment method and system for waste 18650 steel shell lithium ion battery

A technology of a lithium ion battery and a treatment method, which is applied in the field of resource recycling and utilization of waste cylindrical lithium ion battery cells, can solve problems such as low efficiency, and achieve the effects of cost reduction, efficient recovery and reduction of enrichment.

Pending Publication Date: 2022-08-02
夏莞梅
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Problems solved by technology

[0005] The invention provides a treatment method and system for waste 18650 steel case lithium-ion batteries, which can realize high-efficiency treatment and clean production, and solve the problems of environmental protection and low efficiency of resource recycling of existing waste lithium-ion batteries

Method used

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  • Treatment method and system for waste 18650 steel shell lithium ion battery
  • Treatment method and system for waste 18650 steel shell lithium ion battery

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Embodiment

[0071] see figure 1 , a method for treating waste 18650 steel shell lithium-ion batteries, comprising the following steps:

[0072] Step 1: Send the collected waste 18650 steel shell lithium-ion battery directly into the high temperature heat treatment section, the heating temperature is controlled at 750°C, the waste lithium-ion battery reaches 650°C within 5s, and the volume of organic components in the electrolyte inside the battery is sharp. Expansion and overflow, the residual power of the battery is quickly released after the overflow; the organic components collected and overflowed are filtered to obtain organic gas, and the organic gas is collected into a high-pressure storage device;

[0073] Step 2: After the organic components are completely overflowed, enter the constant temperature heat preservation treatment, and the temperature is controlled at 700 ° C; in this step, add the organic gas in the high pressure storage device of step 1 to the constant temperature he...

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Abstract

The invention discloses a treatment method and system for a waste 18650 steel shell lithium ion battery. The method comprises the following steps: step 1, carrying out high-temperature heat treatment on the waste 18650 steel shell lithium ion battery, filtering, collecting overflowed organic components, and carrying out high-pressure storage; 2, carrying out constant-temperature heat preservation treatment on the waste 18650 steel shell lithium ion battery; 3, crushing and screening the obtained material to respectively obtain a mixture of positive electrode black powder and a steel shell of a first mixture and a mixture of a negative electrode plate and aluminum particles; 4, the first mixture is cooled and then subjected to magnetic separation treatment, and the steel shell is obtained; and 5, carrying out fine crushing and powder removal treatment on the residual second mixture in the step 4, desorbing the carbon powder on the negative plate to obtain a carbon powder and copper-aluminum particle mixture, screening to obtain a copper-aluminum particle mixture and the carbon powder, and directly separating the copper-aluminum particle mixture through separation to obtain copper and aluminum, thereby finishing the treatment of the waste 18650 steel shell lithium ion battery. The method can be used for efficiently, safely and cleanly treating the waste 18650 steel shell lithium ion battery.

Description

technical field [0001] The invention belongs to the field of resource recycling and utilization of waste cylindrical lithium ion battery cells, and in particular relates to a method and a system for processing waste 18650 steel shell lithium ion batteries. Background technique [0002] With the development of economy and society, the update rate of electronic products is getting faster and faster. Taking new energy vehicles as an example, since its promotion in 2009, with the strong support of the state, new energy vehicles have grown explosively in recent years. According to statistics from the China Association of Automobile Manufacturers, the sales of new energy vehicles in China reached 507,000 in 2016. The service life of power batteries is generally 5 to 8 years. Starting from 2018, my country's power batteries will enter a large-scale scrap period. The representative American Tesla electric vehicles, BYD electric vehicles, Jianghuai Automobile, Yundu, etc. use 18650 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54H01M10/0525
CPCH01M10/54H01M10/0525Y02W30/84
Inventor 夏莞梅
Owner 夏莞梅
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