Methods of inerting lithium-containing batteries and associated containers

Patent metadata

Field	Value
Publication number	US-9520619-B2
Application number	US-201314091994-A
Country	US
Kind code	B2
Filing date	Nov 27, 2013
Priority date	Nov 27, 2013
Publication date	Dec 13, 2016
Grant date	Dec 13, 2016

Abstract

The present disclosure is related to articles (e.g., containers, battery packs, etc.) including a lithium material (e.g., one or more lithium-containing batteries) housed therein. The articles include sulfur hexafluoride located within an interior compartment of the article to provide an inert atmosphere within the interior compartment. The present disclosure is also related to methods of inerting such articles (e.g., containers, battery packs, etc.) with sulfur hexafluoride. Additionally, the present disclosure is related to conveyed (e.g., pumped, blown, etc.) looped cooling apparatuses and systems.

First claim

That which is claimed:

1. A method for suppressing thermal runaway in a lithium-containing battery, the method comprising:
removing air from an interior compartment of a lithium-containing battery via a first orifice;
introducing an inert gas comprising sulfur hexafluoride into the interior compartment via a second orifice;
contacting an electrolyte release from the lithium-containing device with the inert gas;
reacting the sulfur hexafluoride with the electrolyte to produce a non-volatile lithium sulfide; and
dissipating an ambient temperature of the electrolyte release.

2. The method of claim 1 , wherein the non-volatile lithium sulfide comprises lithium sulfide, lithium fluoride, or a combination thereof.

3. The method of claim 1 , wherein the lithium-containing device comprises a container housing a lithium-containing battery.

4. The method of claim 3 , wherein the container comprises a sealable container.

5. The method of claim 1 , wherein the inert gas comprises sulfur hexafluoride.

6. A method for suppressing thermal runaway in a lithium-containing battery, the method comprising, comprising:
a. adding sulfur hexafluoride into an interior compartment of a casing enclosing a lithium-containing battery via a first orifice;
b. displacing oxygen from said interior compartment via a second orifice;
c. reacting the sulfur hexafluoride with a lithium containing electrolyte that is released from the lithium-containing battery to produce a non-volatile lithium containing solid.

7. The method of claim 6 , wherein the lithium-containing battery comprises a lithium ion battery comprising a single lithium ion battery cell.

8. The method of claim 6 , wherein the lithium-containing battery comprises a battery pack comprising a plurality of individual lithium ion battery cells housed inside of the battery pack.

9. The method of claim 6 , wherein said first orifice comprises an inlet orifice and said second orifice comprises an outlet orifice.

10. The method of claim 6 , further comprising evacuating the interior compartment prior to adding sulfur hexafluoride into the interior compartment.

11. The method of claim 6 , further comprising sealing the first orifice after adding sulfur hexafluoride into the interior compartment.

12. The method of claim 6 , wherein the casing further comprises one or more electrical leads positioned to form an electrical connection with said lithium-containing battery to provide power to an external load.

13. A method of inerting a container including a lithium material, comprising:
a. positioning at least one lithium material inside of a sealable container, wherein the lithium material includes at least one lithium ion battery;
b. adding sulfur hexafluoride into an interior compartment of said sealable container via a first orifice;
c. removing air via from said interior compartment via a second orifice; and
d. reacting the sulfur hexafluoride with said at least one lithium material to produce a non-volatile lithium containing solid.

14. The method of claim 13 , wherein said sealable container comprises a heat exchanger in communication with said interior compartment.

15. The method of claim 13 , wherein said first orifice comprises a valve or capable port.

16. The method of claim 13 , further comprising evacuating the interior compartment prior to adding sulfur hexafluoride into the interior compartment.

17. The method of claim 16 , wherein said interior compartment is evacuated by pulling a vacuum through said outlet orifice and sulfur hexafluoride is added into said interior surface through said inlet orifice.

18. The method of claim 17 , wherein the sealable container comprises an upper portion and a lower portion, said outlet orifice being located in the upper portion and the inlet orifice being positioned in the lower portion.

19. The method of claim 13 , wherein the sealable container comprises a shipping container, a storage container, or a battery pack housing.

Assignees

• Boeing Co

Inventors

• Bianchi Maurice P
• Kirshman David

Classifications

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M10/052

  Li-accumulators · CPC title

• B65B29/00

  Packaging of materials presenting special problems · CPC title

• B65D81/2084

  in a flexible container · CPC title

• B65D81/2076 Primary

  in an at least partially rigid container · CPC title