Battery damage indicator

Patent metadata

Field	Value
Publication number	US-9437849-B2
Application number	US-201313837720-A
Country	US
Kind code	B2
Filing date	Mar 15, 2013
Priority date	Mar 15, 2013
Publication date	Sep 6, 2016
Grant date	Sep 6, 2016

Abstract

The present disclosure provides systems and methods for indicating battery damage. A battery may comprise an odorant and/or visible indicator material configured to be released in response to battery damage. The battery may be configured to release the odorant and/or visible indicator in response to damage to the battery housing, a cell or cells in the battery, a seal of the battery, or any other specific component of the battery. The odorant and/or visible indicator may be stored in free space in the battery housing, a battery cell, or other battery component. The battery may be configured to emit an audible and/or visible indication of battery damage in addition to releasing the odorant and/or visible indicator.

First claim

What is claimed is:

1. A battery comprising:
an enclosed battery housing;
an external set of battery terminals coupled to the battery housing;
a battery cell disposed in the battery housing; and
a visible indicator material disposed within the battery housing;
wherein the visible indicator material comprises at least one of a liquid, a powder, or a foam;
wherein the battery is configured to release the visible indicator material from an interior portion of the battery housing to the atmosphere in response to battery housing damage; and
wherein the visible indicator material is spatially separated from electrolytes within the battery cell.

2. The battery of claim 1 , wherein the visible indicator material is disposed within the battery cell.

3. The battery of claim 1 , wherein the visible indicator material comprises a liquid.

4. The battery of claim 1 , wherein the visible indicator material comprises a liquid.

5. The battery of claim 1 , wherein the visible indicator material comprises a liquid.

6. The battery of claim 1 , wherein the visible indicator material comprises an odorant.

7. The battery of claim 1 , wherein the visible indicator material comprises a fire retardant.

8. The battery of claim 1 , wherein the battery housing comprises a free space configured store the visible indicator material.

9. The battery of claim 1 , wherein the battery cell comprises a free space configured store the visible indicator material.

10. The battery of claim 1 , wherein the battery housing comprises a plurality of walls including a free space therebetween, and wherein the free space is configured to store the visible indicator material.

11. The battery of claim 1 , wherein the battery comprises a dedicated container configured to store the visible indicator material.

12. The battery of claim 1 , wherein the battery comprises a sealed wrapper configured to store the visible indicator material, and wherein the sealed wrapper at least partially surrounds the battery cell.

13. The battery of claim 1 , wherein the battery comprises a plurality of storage compartments for storing the visible indicator material.

14. A battery comprising:
an enclosed battery housing;
an external set of battery terminals coupled to the battery housing;
a battery cell disposed in the battery housing;
a visible indicator material disposed within the battery housing; and
a damage indicator configured to release the visible indicator material from an interior portion of the battery housing to the atmosphere in response to battery damage;
wherein the visible indicator material is spatially separated from electrolytes within the battery cell; and
wherein the visible indicator material is selected from the group consisting of a liquid, a powder, a foam, or combinations thereof.

15. The battery of claim 14 , wherein the battery damage comprises damage to the battery cell.

16. The battery of claim 14 , wherein the battery damage comprises battery cell deformation.

17. The battery of claim 14 , wherein the damage indicator comprises an accelerometer configured to detect when the battery is damaged based on a measured acceleration of the battery.

18. The battery of claim 14 , wherein the damage indicator comprises a force meter configured to detect when the battery is damaged based on a measured force applied to the battery.

19. The battery of claim 14 , wherein the damage indicator comprises an electrolyte sensitive actuator configured to detect when the battery is damaged based on a presence of electrolyte outside of the battery cell.

20. The battery of claim 14 , wherein the damage indicator comprises a chemical sensor configured to detect when the battery is damaged based on a presence of electrolyte outside of the battery cell.

21. The battery of claim 14 , wherein the damage indicator is configured to store the visible indicator material under pressure.

22. The battery of claim 14 , wherein the visible indicator material is dispersed by a gas flow.

23. The battery of claim 14 , wherein the damage indicator is further configured to release a test portion of the visible indicator material in response to an external electrical signal when the battery housing is in an undamaged state.

24. The battery of claim 14 , wherein the damage indicator is further configured to emit an audible alarm in response to battery damage.

25. The battery of claim 24 , wherein the battery comprises an aerophone, and wherein the audible alarm is created by the visible indicator material venting through the aerophone.

26. The battery of claim 14 , wherein the damage indicator is further configured to provide an electrical signal in response to battery damage.

27. The battery of claim 14 , wherein the damage indicator is further configured to provide a light signal in response to battery damage.

28. The battery of claim 14 , wherein the damage indicator is further configured to provide a radio signal in response to battery damage.

29. The battery of claim 1 , wherein the battery comprises a plurality of storage compartments for storing the visible indicator material, and wherein the plurality of storage compartments comprise microsphere compartments.

30. The battery of claim 1 , wherein the battery housing comprises a honeycomb battery housing and wherein chambers of the honeycomb battery housing are filled with the visible indicator material.

31. The battery of claim 1 , wherein the battery comprises a plurality of sealed volumes for storing the visible indicator material.

32. The battery of claim 31 , wherein the sealed volumes of the plurality of sealed volumes are regularly spaced and each of the sealed volumes comprises a pliable material.

33. The battery of claim 1 , wherein the battery is configured to, in response to battery housing damage, release the visible indicator material from the interior portion of the battery housing to the atmosphere such that the visible indicator material is released from the battery to contact the atmosphere but is not airborne.

34. The battery of claim 7 , wherein the damage indicator is configured to, in response to battery damage, release the visible indicator material from the interior portion of the battery housing to the atmosphere such that the visible indicator material is released from the battery to contact the atmosphere but is not airborne.

Assignees

• Elwha Llc
• Elwha Llc

Inventors

• Duncan William David
• Hyde Roderick A
• Kare Jordin T
• Tuckerman David B

Classifications

• H01M10/488

  Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density · CPC title

• H01M10/48

  Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) · CPC title

• H01M2/1094

  Electricity · mapped topic

• H01M2/347

  Electricity · mapped topic

• H01M2/1066 Primary

  Electricity · mapped topic