Thermal interface material and related systems and methods

Patent metadata

Field	Value
Publication number	US-9593894-B2
Application number	US-201314137425-A
Country	US
Kind code	B2
Filing date	Dec 20, 2013
Priority date	Dec 20, 2013
Publication date	Mar 14, 2017
Grant date	Mar 14, 2017

Abstract

Disclosed herein are a variety of embodiments of a thermal interface material that may be used in a variety of systems and methods to improve heat transfer. One embodiment consistent with the present disclosure includes a heat dissipation system that includes a heat source and a heat sink. A thermal interface material may be at least partially disposed between the heat source and the heat sink. The thermal interface material may include a plurality of strands of thermally conductive material woven into a pattern. The thermal interface material may be configured to conform to the contact surfaces of the heat source and the heat sink to thereby increase transference of heat between the heat source and the heat sink.

First claim

What is claimed is:

1. A system for heat dissipation in a battery, comprising:
a rechargeable battery system that generates heat as a result of electrochemical processes relating to storage of electrical energy in the rechargeable battery system and extraction of electrical energy from the rechargeable battery system;
a plurality of heat transfer elements in communication with the rechargeable battery system and configured to receive heat from the rechargeable battery system, the plurality of heat transfer elements in communication with a first contact surface;
a cooling system in communication with the plurality of heat transfer elements, the cooling system in communication with a second contact surface;
a thermal interface material disposed between a first contact surface and the second contact surface, the thermal interface material comprising a plurality of strands of thermally conductive material woven into a pattern such that each of the plurality of strands has a length that extends perpendicular to the first contact surface and the second contact surface;
wherein the thermal interface material is configured to conform to the first contact surface and the second contact surface by deformation of the length of at least a portion of the strands and thereby increase transference of heat between the first contact surface and the second contact surface.

2. The system of claim 1 , wherein the rechargeable battery system comprises a plurality of electrochemical cells and the plurality of heat transfer elements comprise a plurality of heat transfer elements in communication with the plurality of electrochemical cells.

3. The system of claim 1 , wherein the cooling system comprises a flow assembly configured to receive a flow of cooled liquid and the first contact surface comprises a surface of the flow assembly.

4. The system of claim 1 , wherein rechargeable battery system comprises a plurality of electrochemical cells and the plurality of heat transfer elements comprise a plurality of cooling fins in communication with the plurality of electrochemical cells.

5. The system of claim 1 , wherein the at least one of the plurality of heat transfer elements comprises a connection element configured to secure the heat transfer element to the thermal interface material.

6. The system of claim 5 , wherein the connection element comprises an integral portion of the heat transfer element configured to be crimped against the thermal interface material.

7. The system of claim 1 , further comprising:
a plurality of spacing components;
wherein the plurality of strands of thermally conductive material are woven in the pattern around the plurality of spacing components.

8. The system of claim 7 , wherein the plurality of spacing components are configured to accommodate elastic deformation.

9. The system of claim 1 , wherein the thermal interface material further comprises a binder layer and the plurality of strands of thermally conductive material are joined to the binder layer.

10. The system of claim 1 , wherein the thermally conductive material comprises one of aluminum, copper, and plated steel.

11. A system for heat dissipation in a battery, comprising:
a rechargeable battery system that generates heat as a result of electrochemical processes relating to storage of electrical energy in the rechargeable battery system and extraction of electrical energy from the rechargeable battery system;
a plurality of heat transfer elements in communication with the rechargeable battery system and configured to receive heat from the rechargeable battery system, the plurality of heat transfer elements in communication with a first contact surface;
an active cooling system configured to circulate a cooled liquid and in communication with the plurality of heat transfer elements, the cooling system in communication with a second contact surface;
a thermal interface material disposed between a first contact surface and the second contact surface, the thermal interface material comprising a plurality of strands of thermally conductive material woven into a pattern such that each of the plurality of strands has a length that extends perpendicular to the first contact surface and the second contact surface;
wherein the plurality of strands of thermally conductive material woven into a pattern are configured to conform to the first contact surface and the second contact surface by deformation of the length of at least a portion of the strands and the second contact surface and thereby increase transference of heat between the first contact surface and the second contact surface.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Schwab Leo
• Hsu Chih-Cheng

Classifications

• H01M10/5075

  Electricity · mapped topic

• F28F3/12 Primary

  Elements constructed in the shape of a hollow panel, e.g. with channels {(F28D1/02, F28D1/03 take precedence)} · CPC title

• F28F2013/006

  Heat conductive materials · CPC title

• H01M10/504

  Electricity · mapped topic

• F28F21/08 Primary

  of metal · CPC title