Systems and methods for containing ignition within a battery housing

Patent metadata

Field	Value
Publication number	US-10745144-B2
Application number	US-201715842125-A
Country	US
Kind code	B2
Filing date	Dec 14, 2017
Priority date	Feb 28, 2014
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

A battery housing including a plurality of side walls oriented to define an interior, and at least one partition that subdivides the interior into at least a first battery compartment and a second battery compartment. The at least one partition defines a flame arrestor configured to provide fluid communication between the first battery compartment and the second battery compartment such that combustion gases are ventable therebetween.

First claim

What is claimed is:

1. A battery housing comprising:
a plurality of side walls oriented to define an interior; and
at least one partition that subdivides said interior into at least a first battery compartment and a second battery compartment, wherein said at least one partition defines a flame arrestor configured to provide fluid communication between said first battery compartment and said second battery compartment such that combustion gases are ventable therebetween, wherein said at least one partition is configured to restrict propagation of an electrical fault between said first battery compartment and said second battery compartment.

2. The battery housing in accordance with claim 1 , wherein said flame arrestor is formed from a material including at least one of a hex-cell structure, a metallic wool material, and a reticulated foam material.

3. The battery housing in accordance with claim 1 , wherein said at least one partition comprises a first partition that subdivides said interior into said first battery compartment and said second battery compartment, and a second partition that further subdivides said interior to define a battery monitoring unit compartment.

4. The battery housing in accordance with claim 3 , wherein said first partition and said second partition are oriented such that said first battery compartment, said second battery compartment, and said battery monitoring unit compartment are arranged in a serial relationship.

5. The battery housing in accordance with claim 1 further comprising an interior wall that further subdivides said interior to define a battery monitoring unit compartment, wherein said at least one partition and said interior wall are oriented such that said first battery compartment and said second battery compartment are both adjacent said battery monitoring unit compartment.

6. The battery housing in accordance with claim 1 , wherein said flame arrestor is configured to vent combustion gases from an ignition in one of said first battery compartment or said second battery compartment, wherein said battery housing is adapted to withstand an ignition pressure of up to about 20 pounds per square inch, gauge.

7. A battery assembly comprising:
a housing comprising an interior;
at least one partition that subdivides said interior into at least a first battery compartment and a second battery compartment, wherein said at least one partition defines a flame arrestor configured to provide fluid communication between said first battery compartment and said second battery compartment such that combustion gases are ventable therebetween, wherein said at least one partition is configured to restrict propagation of an electrical fault between said first battery compartment and said second battery compartment; and
a plurality of battery cells comprising at least a first battery cell positioned within said first battery compartment, and at least a second battery cell positioned within said second battery compartment.

8. The battery assembly in accordance with claim 7 further comprising a battery monitoring unit positioned within said interior.

9. The battery assembly in accordance with claim 8 , wherein said at least one partition comprises a first partition that subdivides said interior into said first battery compartment and said second battery compartment, and a second partition that further subdivides said interior to define a battery monitoring unit compartment configured to receive said battery monitoring unit therein.

10. The battery assembly in accordance with claim 9 , wherein said first partition and said second partition are oriented such that said first battery compartment, said second battery compartment, and said battery monitoring unit compartment are arranged in a serial relationship.

11. The battery assembly in accordance with claim 7 further comprising a plurality of electrical circuits that comprises a first electrical circuit coupled between said at least first battery cell and said battery monitoring unit, and a second electrical circuit coupled between said at least second battery cell and said battery monitoring unit, wherein said first electrical circuit and said second electrical circuit are electrically isolated from each other within respective compartments of said first battery compartment and said second battery compartment.

12. The battery assembly in accordance with claim 8 further comprising an interior wall that further subdivides said interior to define a battery monitoring unit compartment configured to receive said battery monitoring unit, wherein said at least one partition and said interior wall are oriented such that said first battery compartment and said second battery compartment are both adjacent said battery monitoring unit compartment.

13. The battery assembly in accordance with claim 7 , wherein said flame arrestor is formed from a material including at least one of a hex-cell structure, a metallic wool material, and a reticulated foam material.

14. A method for containing a battery enclosure, said method comprising:
subdividing an interior of the battery enclosure into at least a first battery compartment and a second battery compartment using at least one partition, wherein the at least one partition defines a flame arrestor configured to provide fluid communication between the first battery compartment and the second battery compartment;
restricting propagation of an electrical fault between the first battery compartment and the second battery compartment using the at least one partition; and
venting combustion gases from an ignition in one of the first battery compartment or the second battery compartment through the flame arrestor.

15. The method in accordance with claim 14 , wherein the at least one partition includes a first partition and a second partition, wherein subdividing an interior comprises subdividing the interior using the first partition that subdivides the interior into the first battery compartment and the second battery compartment, and the second partition that further subdivides the interior to define a battery monitoring unit compartment.

16. The method in accordance with claim 15 , wherein subdividing the interior further comprises orienting the first partition and the second partition such that the first battery compartment, the second battery compartment, and the battery monitoring unit compartment are arranged in a serial relationship.

17. The method in accordance with claim 14 further comprising subdividing the interior to define a battery monitoring unit compartment using an interior wall, wherein the at least one partition and the interior wall are oriented such that the first battery compartment and the second battery compartment are both adjacent the battery monitoring unit compartment.

18. The method in accordance with claim 14 further comprising a first electrical circuit within the first battery compartment and a second electrical circuit within the second battery compartment, wherein restricting propagation of an electrical fault comprises electrically isolating the first electrical circuit and the second electrical circuit from each other within respective compartments of the first battery compartment and the second battery compartment.

19. The battery housing in accordance with claim 2 , wherein said at least one partition is formed from the material of said flame arrestor such that said at least one partition and said flame arrestor are co-extensive.

20. The battery assembly in accordance with claim 13 , wh

Assignees

• Boeing Co

Inventors

• Tweet Tracy Lee
• Dove Michael Kent

Classifications

• H01M10/482

  for several batteries or cells simultaneously or sequentially · CPC title

• H01M50/291

  characterised by their shape · CPC title

• H01M50/293

  characterised by the material · CPC title

• H01M50/204

  Racks, modules or packs for multiple batteries or multiple cells · CPC title

• H01M50/383

  Flame arresting or ignition-preventing means · CPC title