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Discharge method of waste lithium ion battery

A lithium-ion battery, waste technology, applied in secondary battery charging/discharging, battery recycling, secondary battery repair/maintenance, etc., can solve problems such as complex discharge process, achieve simple discharge process, high discharge efficiency, and eliminate safety hidden effect

Active Publication Date: 2016-12-21
HEFEI GUOXUAN HIGH TECH POWER ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for discharging waste lithium-ion batteries to solve the complicated problems of the current discharge process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A kind of discharge method of waste lithium ion battery, it comprises the following steps:

[0017] (1) Soak the lithium-ion battery in salt water with a mass concentration of 3% for 15 days, and stir once every 2 days;

[0018] (2) After taking it out and rinsing it with water, dry it at 45°C for 1 hour;

[0019] (3) Place the dried lithium-ion battery in the battery box at the bottom of the acupuncture machine. The pool box is a box body welded to the bottom of the acupuncture machine. The top of the battery box is provided with a needle for the acupuncture machine to pass through. When the acupuncture machine is working, insert the needle into the middle of the lithium-ion battery, and pull it out after staying in the battery for at least half an hour. At this time, the voltage of the lithium-ion battery is 0V.

[0020] In a further solution, the size of the battery box matches the outer diameter of the lithium-ion battery.

Embodiment 2

[0022] A kind of discharge method of waste lithium ion battery, it comprises the following steps:

[0023] (1) Soak the lithium-ion battery in salt water with a mass concentration of 5% for 10 days, and stir once every 3 days;

[0024] (2) After taking it out and rinsing it with water, bake it at 55°C for 0.5 hours;

[0025] (3) Put the dried lithium-ion battery in the battery box at the bottom of the acupuncture machine. The needle is inserted into the middle of the lithium-ion battery when the acupuncture machine is working. The needle stays in the battery for at least half an hour and then pulled out. At this time, the voltage of the lithium-ion battery is 0V.

[0026] In a further solution, the battery box is a box body welded at the bottom of the acupuncture machine, and the top of the battery box is provided with a round hole for the needle of the acupuncture machine to pass through; the size of the battery box matches the outer diameter of the lithium-ion battery .

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Abstract

The invention discloses a discharge method of a waste lithium ion battery. The lithium ion battery is soaked in salt water being 3-5% in mass concentration for 10-15 days with stirring for one time per 2-3 days; then the lithium ion battery is taken out and washed by water and is dried, and is placed in a battery case in the bottom of a needle punching machine; a needle head of the needle punching machine is pierced into the interior of the middle of the lithium ion battery and then is pulled out after the needle head stays at the interior of the lithium ion battery for at least half an hour. The discharge method only includes two steps, is simple and safe and can discharge the battery completely.

Description

technical field [0001] The invention belongs to the field of lithium ion battery recycling, in particular to a discharge method for waste lithium ion batteries. Background technique [0002] Energy and the environment have become the most concerned issues in the world at present, and electric vehicles have begun to be gradually promoted and applied all over the world. As the number of electric vehicles increases, there will be a large number of power battery packs that cannot meet the standards for electric vehicles. How to deal with these power batteries eliminated from electric vehicles will gradually become a contradiction between the development of the new energy vehicle industry and the environment and resources. Therefore, the recycling of used batteries has gradually been put on the agenda. [0003] Although the economics of recycling lithium-ion batteries is not high at present, with the expansion of application scale and the gradual depletion of resources, the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54H01M10/44
CPCH01M10/44H01M10/54Y02E60/10Y02W30/84
Inventor 徐庆庆王世旭丁绍玉
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY
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