Electrochemical cell heat shunt

Patent metadata

Field	Value
Publication number	US-2023170544-A1
Application number	US-202117536952-A
Country	US
Kind code	A1
Filing date	Nov 29, 2021
Priority date	Nov 29, 2021
Publication date	Jun 1, 2023
Grant date	—

Abstract

An electrochemical cell includes an anode, a cathode, one or more surfaces surrounding the anode and the cathode, and a heat shunt. The heat shunt covers at least a portion of the one or more surfaces and is configured to distribute heat generated by the electrochemical cell across the one or more surfaces.

First claim

What is claimed is:

1 . An electrochemical cell comprising:
an anode; a cathode; one or more surfaces surrounding at least a portion of each of the anode and the cathode; and a heat shunt covering at least a portion of the one or more surfaces and configured to distribute heat generated by the electrochemical cell across the one or more surfaces.

2 . The electrochemical cell of claim 1 , wherein the heat shunt comprises graphene.

3 . The electrochemical cell of claim 1 , wherein the heat shunt comprises a plurality of strips covering the at least a portion of the one or more surfaces of the electrochemical cell.

4 . The electrochemical cell of claim 1 , wherein the heat shunt comprises a sheet covering the at least a portion of the one or more surfaces of the electrochemical cell.

5 . The electrochemical cell of claim 1 , wherein the heat shunt is further configured to resist dissipation of heat from the electrochemical cell.

6 . The electrochemical cell of claim 1 , further comprising a housing configured to house the anode, the cathode, and the one or more surfaces;
wherein the housing comprises the heat shunt.

7 . The electrochemical cell of claim 1 , further comprising an adhesive configured to adhere the heat shunt to the one or more surfaces.

8 . The electrochemical cell of claim 1 , wherein the electrochemical cell comprises a lithium metal battery cell.

9 . A system comprising:
an electrochemical cell comprising:
an anode;
a cathode; and
a housing comprising one or more surfaces and configured to house at least a portion of the anode and the cathode; and
one or more heat shunt sleeves configured to:
receive the electrochemical cell such that the heat shunt sleeve covers at least a portion of the one or more surfaces; and
distribute heat across the one or more surfaces of the housing.

10 . The system of claim 9 , wherein the one or more heat shunt sleeves comprise graphene.

11 . The system of claim 9 , wherein the one or more heat shunt sleeves comprise a plurality of strips covering the at least a portion of the one or more surfaces of the housing.

12 . The system of claim 9 , wherein the one or more heat shunt sleeves comprise a sheet covering the at least a portion of the one or more surfaces of the housing.

13 . The system of claim 9 , wherein the one or more heat shunt sleeves is further configured to resist dissipation of heat from the electrochemical cell.

14 . The system of claim 9 , wherein the electrochemical cell comprises a lithium metal battery cell.

15 . The system of claim 9 , further comprising an adhesive configured to adhere the heat shunt sleeve to the one or more surfaces of the housing.

16 . A method comprising distributing heat across one or more surfaces of an electrochemical cell using a heat shunt.

17 . The method of claim 16 , wherein the heat shunt comprises graphene.

18 . The method of claim 16 , wherein the heat shunt comprises a plurality of strips covering a at least a portion of the one or more surfaces of the electrochemical cell.

19 . The method of claim 16 , wherein the heat shunt comprises a sheet covering a at least a portion of the one or more surfaces of the electrochemical cell.

20 . The method of claim 16 , wherein distributing the heat across the one or more surfaces of the electrochemical cell reduces a temperature gradient of the one or more surfaces.

21 . The method of claim 16 , further comprising resisting dissipation of heat from the electrochemical cell using the heat shunt.

Assignees

• Medtronic Inc

Inventors

• Viavattine Joseph J

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/653

  characterised by electrically insulating or thermally conductive materials · CPC title

• H01M10/617 Primary

  for achieving uniformity or desired distribution of temperature · CPC title

• H01M10/6554

  Rods or plates · CPC title

• H01M10/654

  located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes · CPC title