IP Library › Patent Application 18990323
Patent Application
App. No. 18/990,323

CELLS WITH BLOCKING DEVICES FOR DELAYED HEAT PROPAGATION

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Quick Facts
Patent No.
US None
App. No.
18/990,323
Abstract

This disclosure describes a battery device with one or more battery cells and an insulation layer that reduces and/or delays thermal propagation. The insulating layer may be hermetically sealed into the cell. The insulating layer may be thermally stable up to 1800° C. The insulating layer may have a thermal conductivity less than 1 W/(m·K). The insulating layer may comprise a ceramic material. For example, the insulating layer may comprise a porous ceramic paper that is saturated or coated with another material.

Claims (22)

1 . A battery device, comprising:

a cell and

an insulating layer hermetically sealed into the cell.

2 . The battery device of claim 1 , wherein the insulating layer is thermally stable up to 1800° C.

3 . The battery device of claim 1 , wherein the insulating layer that has thermal conductivity less than 1 W/(m·K).

4 . The battery device of claim 1 , wherein the insulating layer comprises a ceramic material.

5 . The battery device of claim 1 , wherein at least 50% of the insulating layer is ceramic.

6 . The battery device of claim 1 , wherein the insulating layer comprises a porous ceramic paper.

7 . The battery device of claim 1 , wherein the insulating layer comprises a material that is added via a saturation process.

8 . The battery device of claim 1 , wherein the insulating layer comprises a material that is added via a coating process.

9 . The battery device of claim 1 , wherein the insulating layer comprises a flame extinguishing material.

10 . The battery device of claim 1 , wherein the insulating layer comprises a flame retardant material.

11 . The battery device of claim 1 , wherein the insulating layer comprises polydimethylsiloxane (PDMS).

12 . The battery device of claim 1 , wherein the insulating layer comprises a phase change material.

13 . The battery device of claim 1 , wherein the insulating layer comprises a high heat capacity material.

14 . The battery device of claim 1 , wherein the insulating layer comprises magnesium hydroxide (Mg(OH) 2 ).

15 . The battery device of claim 1 , wherein the insulating layer comprises a material that is operable to undergo an endothermic reaction.

16 . The battery device of claim 1 , wherein the insulating layer comprises paraffin.

17 . The battery device of claim 1 , wherein the insulating layer comprises a polymer.

18 . The battery device of claim 1 , wherein the insulating layer comprises a material with a melting point above 100° C.

19 . The battery device of claim 1 , wherein the insulating layer comprises a material with a melting point below 200° C.

20 . The battery device of claim 1 , wherein the insulating layer reduces an energy density of the battery device by less than 5%.

Assignments (1)
SECURITY INTEREST Recorded Mar 10, 2026
From: ENEVATE CORPORATION
To: MCANDREWS, HELD & MALLOY LTD.
Reel/Frame 075093/0935 →