Novel aerogel sandwich structure as thermal barriers for high voltage battery thermal mitigation applications

Patent metadata

Field	Value
Publication number	US-2023231258-A1
Application number	US-202217576324-A
Country	US
Kind code	A1
Filing date	Jan 14, 2022
Priority date	Jan 14, 2022
Publication date	Jul 20, 2023
Grant date	—

Abstract

A battery system includes a thermoresistant spacer disposed between a first battery module and a second battery module. The thermoresistant spacer includes a substrate of aluminum, an aluminum alloy, an inorganic paper, and graphene, and the substrate laminated with a heat insulating material and has a flame retardant disposed over the laminated substrate.

First claim

What is claimed is:

1 . A battery system comprising:
a first battery module; a second battery module; and a thermoresistant spacer comprised of a substrate covered with at least one of a thermoresistant additive and a flame retardant material and disposed between the first battery module and the second battery module, wherein the substrate comprises at least one of aluminum, an aluminum alloy, an inorganic paper, and graphene.

2 . The battery system according to claim 1 , wherein a thickness of the substrate is greater than or equal to about 0.2 mm to less than or equal to about 1 mm.

3 . The battery system according to claim 1 further comprising a ceramic coating disposed over the substrate.

4 . The battery system according to claim 3 , wherein the thermoresistant additive includes an aerogel layer disposed over the ceramic coating.

5 . The battery system according to claim 4 further comprising a hydrophobic layer disposed over the aerogel layer.

6 . The battery system according to claim 5 further comprising a flame retardant disposed over the hydrophobic layer.

7 . The battery system according to claim 6 , wherein the flame retardant material comprises at least one of oxidized polyacrylonitrile cloth, basalt cloth, calcium silicate cloth, silicon, glass mat, aluminum oxide fiber cloth, and mixtures thereof.

8 . The battery system according to claim 7 , wherein the flame retardant material is oxidized polyacrylonitrile cloth.

9 . A battery system comprising:
a first battery module; a second battery module; a thermoresistant spacer comprised of a substrate disposed between the first battery module and the second battery module, wherein the substrate comprises at least one of aluminum, an aluminum oxide, an inorganic paper, and graphene; and an oxidized polyacrylonitrile cloth disposed on at least an outer surface of the thermoresistant spacer.

10 . The battery system according to claim 9 , wherein the thermoresistant spacer further comprises at least a thermoresistant additive disposed over the substrate.

11 . The battery system according to claim 10 , wherein the thermoresistant additive comprises an aerogel layer.

12 . The battery system according to claim 9 , wherein a thickness of the oxidized polyacrylonitrile cloth is greater than or equal to about 0.3 mm to less than or equal to about 1 mm.

13 . The battery system according to claim 9 , wherein a thickness of the substrate is greater than or equal to about 0.2 mm to less than or equal to about 1 mm.

14 . A battery system comprising:
a first battery module; a second battery module; a thermoresistant spacer comprised of a substrate covered with a thermoresistant additive layer having a thickness of less than or equal to about 1 mm disposed between the first battery module and the second battery module; and a flame retardant material is disposed on at least an outer surface of the thermoresistant spacer.

15 . The battery system according to claim 14 , wherein the thermoresistant additive layer further comprises at least one of glass bubbles, mica powder, kaolin powder, milled basalt fibers, and quartz fibers.

16 . The battery system according to claim 15 , wherein thermoresistant additive layer further comprises aerogel.

17 . The battery system according to claim 14 , further comprising at least seven battery modules spaced sequentially apart from one another to form a plurality of channels and a thermoresistant spacer is disposed within each of the plurality of channels.

18 . The battery system according to claim 14 , wherein a thickness of the flame retardant material is greater than or equal to about 0.3 mm and less than or equal to about 1 mm.

19 . The battery system according to claim 14 , wherein the flame retardant material comprises at least one of oxidized polyacrylonitrile cloth, basalt cloth, calcium silicate cloth, silicon, glass mat, and aluminum oxide fiber cloth.

20 . The battery system according to claim 14 , wherein the substrate comprises at least one of aluminum, an aluminum alloy, an inorganic paper, and graphene.

Assignees

• Ford Global Tech Llc

Inventors

• Boddakayala Bhaskara Rao
• Mielewski Deborah Frances
• Zhao Haibo
• Kiziltas Alper

Classifications

• H01M50/293 Primary

  characterised by the material · CPC title

• H01M10/658 Primary

  by thermal insulation or shielding · CPC title

• H01M10/625

  Vehicles · CPC title

• H01M50/204

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

• H01M50/249

  specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) · CPC title