Heat transfer plate

• US 7,646,608 B2
• Filed: 09/01/2005
• Issued: 01/12/2010
• Est. Priority Date: 09/01/2005
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations Incorporated (Motors Liquidation Co. GUC Trust)
• Inventors: Thompson, Alex, Ward, Terence G.
• Primary Examiner(s): Gandhi; Jayprakash N
• Assistant Examiner(s): Thomas; Bradley H
• Application Number:
  US11/217,971
• Publication Number:
  US 20070047209A1
• Time in Patent Office: 1,594 Days
• Field of Search: 361712-713, 361/751, 361688-693, 361/710, 361/704, 361/707, 361/711, 257/675, 165/80.2, 165/80.3, 165/185, 165/104.33, 165/86, 622/592
• US Class Current: 361/711
• CPC Class Codes: H01L 23/433 Auxiliary members in containers characterised by their shape, e.g. pistons
• CPC Class Codes: H01L 24/72 Detachable connecting means consisting of mechanical auxiliary parts connecting the device, e.g. pressure contacts using springs or clips
• CPC Class Codes: H01L 2924/01006 Carbon [C]
• CPC Class Codes: H01L 2924/01015 Phosphorus [P]
• CPC Class Codes: H01L 2924/01029 Copper [Cu]
• CPC Class Codes: H01L 2924/01033 Arsenic [As]
• CPC Class Codes: H01L 2924/01067 Holmium [Ho]
• CPC Class Codes: H01L 2924/01072 Hafnium [Hf]
• CPC Class Codes: H01L 2924/01075 Rhenium [Re]
• CPC Class Codes: H05K 7/20472 Sheet interfaces

Abstract

An apparatus for coupling a heat-generating device to a heat-removing device. The apparatus includes a thermally-conductive plate having a first side and a second side. The apparatus also includes a plurality of first channels that intersect with a plurality of second channels formed on at least one of the first side and the second side. The formation of the first channels and the second channels weaken the thermally-conductive plate. The apparatus further includes a plurality of protrusions formed by the intersection of the first channels and the second channels. The protrusions are deformable by coupling the thermally-conductive plate between the heat-generating device and the heat-removing device.

Claims

1. An apparatus for coupling a heat-generating device to a heat-removing device comprising:

a conformable plate having a first side with a first surface and a second side with a second, opposite surface;

a plurality of first channels that intersect with a plurality of second channels recessed in said first surface of said first side each having a depth relative to said first surface;

a plurality of third channels recessed in said second, opposite surface of said second side, each of said third channels having a depth relative to said second surface;

a plurality of protrusions formed from said first surface and said intersections of said first channels and said second channels, each of said protrusions include a face and walls that surround said face, said face is formed from said first surface, and said walls define a height based on said depth of said first and said second channels, said protrusions are deformable by coupling said conformable plate between the heat-generating device and the heat-removing device; and

a pattern of apertures formed through said conformable plate, said first channels and said third channels project inwardly to form said pattern of apertures through said conformable plate in intersections of said first and said third channels.

2. The apparatus of claim 1 wherein each of said protrusions include said face having a surface area that abuts one of the heat-generating device and the heat-removing device, at least one of said faces increasing said surface area when compressed between the heat-generating device and the heat-removing device.

3. The apparatus of claim 2 wherein said conformable plate is a thermally conductive plate that is electrically insulated.

4. The apparatus of claim 3 wherein said conformable plate is at least partially coated with parylene.

5. The apparatus of claim 3 wherein said conformable plate is made of copper.

6. The apparatus of claim 1 wherein said conformable plate has a dimension defining a thickness and said dimension is about 0.003 inches (about 0.076 millimeters).

7. The apparatus of claim 1 wherein at least one of said first, said second, and said third channels have a dimension defining a width, said dimension is about 0.003 inches (about 0.076 millimeters).

8. The apparatus of claim 1 wherein a width of at least one of said first, said second, and said third channels is about equal to a thickness of said conformable plate.

9. The apparatus of claim 1 wherein said pattern of apertures are formed entirely in said intersections of said first and said third channels.

10. A method comprising:

providing a conformable plate having a first side with a first surface and a second side having a second, opposite surface, said conformable plate made of a thermally conductive material;

removing material in said first surface of said conformable plate to form recessed channels and protrusions at intersections of said channels; and

removing material in said second, opposite surface of said conformable plate to form recessed channels in said second, opposite surface,

said removing of material in said first surface and said second, opposite surface cooperatively forms a pattern of apertures through said conformable plate at intersections of said recessed channels on said first surface and said second, opposite surface,

each of said protrusions at said intersections of said channels on said first surface having a face formed from said first surface and surrounding walls formed from said recessed channels on said first surface.

11. The method of claim 10 further comprising pressing a structure into said conformable plate to form said at least one of said intersecting channels and said protrusions.

12. The method of claim 10 further comprising at least partially coating said conformable plate with parylene.

13. The method of claim 10 further comprising compressing said conformable plate between a first object and a second object, wherein said compressing of said conformable plate increases a surface area at which said conformable plate abuts at least one of a first surface on said first object and a second surface on said second object.

14. The method of claim 10 wherein said pattern of apertures are formed entirely in said intersections of said channels on said first side and said second, opposite side.

15. The method of claim 10 wherein said walls that surround said face of each of said protrusions define a height based on said depth of said channels on said first surface.

16. An apparatus for coupling a heat-generating device to a heat-removing device comprising:

a thermally conductive plate having a first planar surface and a second, opposite planar surface;

N first channels projecting inwardly to said thermally conductive plate from said first planar surface;

M sets of O second channels projecting inwardly to said thermally conductive plate from said first planar surface and substantially perpendicular to said N first channels;

a plurality of protrusions formed from said first planar surface at intersections of said N first channels and said O second channels, each of said protrusions include a face formed from said first planar surface and walls that surround said face that are formed from said N first channels and said O second channels;

P third channels projecting inwardly to said thermally conductive plate from said second, opposite, planar surface; and

M sets of Q apertures formed in intersections of said O second channels on said first planar surface and said P third channels on said second, opposite surface, said O second channels and said P third channels project toward one another to form said Q apertures through said thermally conductive plate, wherein said N, M, O, P, and Q are integers greater than one.

17. The apparatus of claim 16 wherein said M sets of Q apertures are formed through said thermally-conductive plate.

18. The apparatus of claim 16 wherein said M sets of Q apertures are formed entirely in said intersections of said O second channels and said P third channels.