Method for treating lithium ion battery

Patent metadata

Field	Value
Publication number	US-11145915-B2
Application number	US-201916730123-A
Country	US
Kind code	B2
Filing date	Dec 30, 2019
Priority date	Apr 17, 2015
Publication date	Oct 12, 2021
Grant date	Oct 12, 2021

Abstract

The present invention provides a method for treating at least one lithium ion battery enclosed in a housing containing aluminum, comprising heating the lithium ion battery using a combustion furnace in which a combustion object is incinerated by flames, while preventing the flames from being directly applied to the housing of the lithium ion battery.

First claim

What is claimed is:

1. A method for treating at least one lithium ion battery enclosed in a housing containing aluminum, comprising:
heating the lithium ion battery using a combustion furnace in which a combustion object is incinerated by flames, while preventing the flames from being directly applied to the housing of the lithium ion battery,
wherein in the combustion furnace, the lithium ion battery is disposed in a battery protection container for preventing the flames from being directly applied to the housing of the lithium ion battery, and the flames are applied to an outer surface of the battery protection container, and
wherein the battery protection container has at least one gas venting hole for discharging a gas flowing out from the inside of the housing of the lithium ion battery to the outside of the battery protection container.

2. The method for treating the lithium ion battery according to claim 1 , wherein a temperature of the lithium ion battery in the combustion furnace is increased in an air atmosphere.

3. The method for treating the lithium ion battery according to claim 1 , wherein in the battery protection container, a filling material is arranged together with the lithium ion battery.

4. The method for treating the lithium ion battery according to claim 3 , wherein the filling material is in the form of powder.

5. The method for treating the lithium ion battery according to claim 4 , wherein the powder is alumina powder.

6. The method for treating the lithium ion battery according to claim 3 , wherein in the battery protection container, the entire lithium ion battery is embedded in the filling material.

7. The method for treating the lithium ion battery according to claim 1 , wherein after heating the lithium ion battery, the lithium ion battery maintains the state where the lithium ion battery is enclosed in the housing.

8. The method for treating the lithium ion battery according to claim 4 , wherein in the battery protection container, the entire lithium ion battery is embedded in the filling material.

9. The method for treating the lithium ion battery according to claim 5 , wherein in the battery protection container, the entire lithium ion battery is embedded in the filling material.

10. The method for treating the lithium ion battery according to claim 2 , wherein after heating the lithium ion battery, the lithium ion battery maintains the state where the lithium ion battery is enclosed in the housing.

Assignees

• Jx Nippon Mining & Metals Corp

Inventors

• Usui Shojiro
• Okajima Nobuaki

Classifications

• Y02W30/84

  Recycling of batteries or fuel cells · CPC title

• H01M10/615

  Heating or keeping warm · CPC title

• H01M50/119

  Metals · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• C22B7/00 Primary

  Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; {Methods of a general interest or applied to the winning of more than two metals (briquetting of scrap C22B1/248; preliminary treatment of scrap C22B1/005)} · CPC title