Multifunctional battery packaging and insulation

Patent metadata

Field	Value
Publication number	US-2020144658-A1
Application number	US-201816183093-A
Country	US
Kind code	A1
Filing date	Nov 7, 2018
Priority date	Nov 7, 2018
Publication date	May 7, 2020
Grant date	—

Abstract

Systems, methods, and apparatus for multifunctional battery packaging and insulation are disclosed. In one or more embodiments, a battery pack comprises a plurality of battery cells. The battery pack further comprises a block comprising a plurality of recesses formed within the block. In one or more embodiments, each of the recesses respectively houses one of the battery cells within the block. In at least one embodiment, the block comprises a low density ceramic fiber reinforced foam that is porous such that a gas or liquid may pass through the block to cool the battery pack. In one or more embodiments, at least a portion of the block is covered with a ceramic matrix composite (CMC) material comprising a ceramic slurry composite pre-impregnated (prepreg) with fibers. In some embodiments, the CMC material is cured via kiln firing the block.

First claim

We claim:

1 . A battery pack apparatus, the apparatus comprising:
a plurality of battery cells; and a block comprising a plurality of recesses formed within the block, wherein each of the recesses respectively houses one of the battery cells within the block, and wherein the block comprises a low density ceramic fiber reinforced foam that is porous such that a gas or liquid may pass through the block.

2 . The apparatus of claim 1 , wherein at least one of the battery cells is at least one of a lithium-ion battery cell, a nickel-cadmium battery cell, a nickel-zinc battery cell, or a nickel-metal hydride battery cell.

3 . The apparatus of claim 2 , wherein the lithium-ion battery cell is a lithium cobalt oxide battery cell, a lithium manganese oxide battery cell, a lithium iron phosphate battery cell, a lithium nickel manganese cobalt oxide battery cell, a lithium nickel cobalt aluminum oxide battery cell, a lithium titanate battery cell, or a lithium-sulfur battery cell.

4 . The apparatus of claim 1 , wherein the low density ceramic fiber reinforced foam is a low density oxide ceramic fiber reinforced foam.

5 . The apparatus of claim 1 , wherein the low density ceramic fiber reinforced foam comprises alumina-borosilicate.

6 . The apparatus of claim 1 , wherein at least a portion of a surface of the block is local hardened.

7 . The apparatus of claim 1 , wherein at least a portion of a surface of the block is covered with a ceramic matrix composite (CMC) material.

8 . The apparatus of claim 7 , wherein the ceramic matrix composite (CMC) material comprises a ceramic slurry composite pre-impregnated (prepreg) with fibers.

9 . The apparatus of claim 7 , wherein the ceramic matrix composite material (CMC) is cured via firing the block in a kiln.

10 . The apparatus of claim 7 , wherein an interior surface of at least one of the recesses of the block is coated with the ceramic matrix composite (CMC) material.

11 . The apparatus of claim 1 , wherein the block is configured to pass the gas or the liquid in a zig-zag fashion within an interior of the block.

12 . The apparatus of claim 1 , wherein at least one cooling hole is machined or formed within the block such that a gas or liquid may pass through the block via the at least one cooling hole.

13 . A system for cooling a battery pack, the system comprising:
the battery pack comprising a plurality of battery cells and a block comprising a plurality of recesses formed within the block, wherein each of the recesses respectively houses one of the battery cells within the block, and wherein the block comprises a low density ceramic fiber reinforced foam that is porous such that a gas or liquid may pass through the block; and a pump to pump the gas or the liquid through the block to cool the battery cells within the block.

14 . The system of claim 13 , wherein the pump is configured to pump the gas or the liquid into a face side or into an edge side of the block.

15 . The system of claim 13 , wherein the pump is configured to pump the gas or the liquid into at least one cooling hole, which is machined or formed within the block.

16 . The system of claim 13 , wherein the block is configured to allow the gas or the liquid pass in a zig-zag fashion within an interior of the block.

17 . A method for cooling a battery pack, the method comprising:
pumping, via a pump, a gas or liquid through a block of the battery pack to cool a plurality of battery cells within the battery pack, wherein a plurality of recesses is formed within the block, and each of the recesses respectively houses one of the battery cells within the block, and wherein the block comprises a low density ceramic fiber reinforced foam that is porous such that the gas or the liquid may pass through the block.

18 . A method of manufacturing a battery pack, the method comprising:
forming a block comprising a plurality of recesses configured to receive a plurality of battery cells, wherein the block comprises a low density ceramic fiber reinforced foam that is porous such that a gas or liquid may pass through the block; covering at least a portion of a surface of the block with a ceramic matrix composite (CMC) material; firing the block in a kiln to cure the CMC material; and disposing one of the battery cells within each of the recesses within the block.

19 . The method of claim 18 , wherein the method further comprises machining or forming at least one cooling hole within the block to allow for a gas or liquid to pass through the block.

20 . The method of claim 18 , wherein the method further comprises forming the block such that the block is configured to pass the gas or the liquid in a zig-zag fashion within an interior of the block.

Assignees

• Boeing Co

Inventors

• Polus Jeffrey E

Classifications

• H01M10/0525 Primary

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

• H01M10/6567

  Liquids · CPC title

• H01M10/6556

  Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552) · CPC title

• H01M10/613

  Cooling or keeping cold · CPC title

• H01M10/653

  characterised by electrically insulating or thermally conductive materials · CPC title