Liquid reserve batteries for munitions

Patent metadata

Field	Value
Publication number	US-9252433-B2
Application number	US-201213350907-A
Country	US
Kind code	B2
Filing date	Jan 16, 2012
Priority date	Jan 16, 2012
Publication date	Feb 2, 2016
Grant date	Feb 2, 2016

Abstract

A method for producing power from a liquid reserve battery. The method including heating a liquid electrolyte and forcing the heated liquid electrolyte into gaps dispersed in a battery cell.

First claim

What is claimed is:

1. A liquid reserve battery, the liquid reserve battery comprising:
a collapsible storage unit having a liquid electrolyte stored therein;
a battery cell in communication with an outlet of the collapsible storage unit, the battery cell having gaps dispersed therein;
a pyrotechnic material disposed adjacent the collapsible storage unit such that initiation of the pyrotechnic material provides pressure to collapse the collapsible storage unit to heat and force the liquid electrolyte through the outlet and into the gaps; and
at least one vacuum generating element for drawing gases from the gaps in the battery cell;
wherein the vacuum generating element comprises an elastically deformable container, one or more releasing members to retain the elastically deformable container in a deformed configuration having a first volume and at least one sealed outlet in communication with the battery cell; and
the one or more releasing members comprises one or more burnable fibers which are released by the initiation of the pyrotechnic material to allow the elastically deformable container to elastically deform to have a second volume greater than the first volume to thereby draw gases from the battery cell through the sealed outlet.

2. The liquid reserve battery of claim 1 , further comprising an initiator device having an output in communication with the pyrotechnic material for initiating the pyrotechnic material upon a firing event.

3. The liquid reserve battery of claim 2 , wherein the firing event is an acceleration with at least a predetermined duration and magnitude.

4. The liquid reserve battery of claim 1 , further comprising a body having a first compartment to contain the battery cell and a second compartment to contain the collapsible storage unit and the pyrotechnic material, the body further having a separating plate dividing the first and second compartments.

5. The liquid reserve battery of claim 4 , wherein the separating plate comprises at least one hole in communication with the outlet of the collapsible storage unit.

6. The liquid reserve battery of claim 5 , further comprising a diaphragm associated with each of the at least one holes, the diaphragm being configured to burst upon collapse of the collapsible storage unit.

7. The liquid reserve battery of claim 4 , further comprising terminals electrically connected to the battery cell, the terminals being positioned on an exterior of the body.

8. The liquid reserve battery of claim 7 , wherein the terminals are positioned on a portion of the exterior of the body corresponding to the first compartment.

9. The liquid reserve battery of claim 1 , wherein the collapsible storage unit having a liquid electrolyte stored therein comprises a plurality of collapsible storage units each having a liquid electrolyte stored therein, at least one outlet of each of the collapsible storage units being in communication with the battery cell, and the pyrotechnic material is disposed adjacent to the plurality of collapsible storage units.

10. The liquid reserve battery of claim 1 , wherein the one or more burnable fibers further include a pyrotechnic material disposed thereon.

11. A liquid reserve battery, the liquid reserve battery comprising:
a collapsible storage unit having a liquid electrolyte stored therein;
a battery cell in communication with an outlet of the collapsible storage unit, the battery cell having gaps dispersed therein;
a pyrotechnic material disposed adjacent the collapsible storage unit such that initiation of the pyrotechnic material provides pressure to collapse the collapsible storage unit to heat and force the liquid electrolyte through the outlet and into the gaps; and
at least one vacuum generating element for drawing gases from the gaps in the battery cell;
wherein the vacuum generating element comprises an elastically deformable container, one or more releasing members to retain the elastically deformable container in a deformed configuration having a first volume and at least one sealed outlet in communication with the battery cell; and
the one or more releasing members comprises one or more pyrotechnic members which are released by the initiation of the pyrotechnic material to allow the elastically deformable container to elastically deform to have a second volume greater than the first volume to thereby draw gases from the battery cell through the sealed outlet.

12. The liquid reserve battery of claim 1 , further comprising run-time extending means to increase a run-time output of the liquid reserve battery after activation thereof.

13. The liquid reserve battery of claim 12 , wherein the run-time extending means comprises a heat storage element disposed in communication with the battery cell for storing a portion of heat produced from the pyrotechnic material and conducting such heat into the battery cell after activation thereof with the liquid electrolyte.

14. The liquid reserve battery of claim 12 , wherein the run-time extending means comprises a heating element disposed in communication with the battery cell for providing heat into the battery cell after activation thereof with the liquid electrolyte.

15. The liquid reserve battery of claim 14 , further comprising one or more of a temperature and an output sensor to detect one or more of a temperature or an output of the liquid reserve battery and to activate the heating element upon detection of the temperature or the output of the liquid reserve battery falling below a predetermined amount.

16. The liquid reserve battery of claim 12 , wherein the run-time extending means comprises an additional pyrotechnic material disposed in communication with the battery cell for providing heat into the battery cell after activation thereof with the liquid electrolyte.

17. The liquid reserve battery of claim 16 , further comprising one or more of a temperature and an output sensor to detect one or more of a temperature or an output of the liquid reserve battery and to activate the additional pyrotechnic material upon a detection of the temperature or the output of the liquid reserve battery falling below a predetermined amount.

18. The liquid reserve battery of claim 17 , further comprising an electrical initiator for initiating the additional pyrotechnic material upon the detection of the temperature or the output of the liquid reserve battery falling below the predetermined amount.

Assignees

• Rastegar Jahangir S
• Omnitek Partners Llc

Inventors

• Rastegar Jahangir S

Classifications

• H01M2/38

  Electricity · mapped topic

• H01M6/5038

  Heating or cooling of cells or batteries · CPC title

• H01M6/36 Primary

  containing electrolyte and made operational by physical means, e.g. thermal cells · CPC title

• H01M50/70

  Arrangements for stirring or circulating the electrolyte · CPC title