Method and apparatus for cooling devices using phase change materials

Patent metadata

Field	Value
Publication number	US-9285845-B2
Application number	US-201213728104-A
Country	US
Kind code	B2
Filing date	Dec 27, 2012
Priority date	Dec 27, 2012
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

In some embodiments, cooling devices with metal hydrides are disclosed.

First claim

What is claimed is:

1. An apparatus, comprising: a first container having a first metal hydride, the first container configured to be mounted to a surface to conduct heat away from the surface through hydrogen being released from the first metal hydride; a controllable valve; and a second container having a second metal hydride, the second container coupled to the first container through the controllable valve, wherein the second metallic hydride is to have a phase change temperature which is to be same as a phase change temperature for the first metallic hydride.

2. The apparatus of claim 1 , wherein the second container is fluidly coupled to the first container.

3. The apparatus of claim 1 , in which the second metallic hydride includes LaNi4.8Sn0.2.

4. The apparatus of claim 1 , in which the controllable valve is a Polymer Electrolyte Membrane (PEM) valve.

5. The apparatus of claim 1 , further comprising a controller to open the controllable valve in association with a power surge event.

6. The apparatus of claim 1 , in which the second container has a solid-to-liquid phase change material thermally mounted to at least part of its surface.

7. The apparatus of claim 6 , in which the solid-to-liquid phase change material includes paraffin.

8. The apparatus of claim 1 , in which the first metal hydride includes MgNi4.15Fe0.85.

9. A computing platform, comprising: a chip package; and a first container having a first metal hydride, the first container thermally conductively mounted to a surface of the chip package to conduct heat away from the chip package; and a second container having a second metal hydride, the second container positioned away from the chip package, wherein the second container is to be fluidly coupled to the first container through a controllable valve, wherein the second metallic hydride is to have a phase change temperature which is to be same as a phase change temperature for the first metallic hydride.

10. The computing platform of claim 9 , in which the second metal hydride is to absorb hydrogen released from the first metallic hydride in the first container.

11. The computing platform of claim 9 , in which the substance includes a second metallic hydride having a phase change temperature the same as or lower than that for the first metallic hydride.

12. The computing platform of claim 9 , in which the second metallic hydride includes LaNi4.8Sn0.2.

13. The computing platform of claim 9 , in which the controllable valve is a Polymer Electrolyte Membrane (PEM) valve.

14. The computing platform of claim 9 , further comprising a controller to open the controllable valve in association with a power surge event for the chip package.

15. The computing platform of claim 9 , in which the first metal hydride includes MgNi4.15Fe0.85.

16. A computing platform, comprising: a processor chip; a chip package containing the processor chip; a first container having a first metallic hydride, the first container mounted to thermally conduct heat away from the processor chip, wherein the first container is thermally conductively mounted to a surface of the chip package; and a second container having a second metallic hydride, the second container positioned away from the chip package, the second container fluidly coupled to the first container through an electronically controllable valve, wherein the second metallic hydride is to have a phase change temperature which is to be same as a phase change temperature for the first metallic hydride.

17. The computing platform of claim 16 , in which the processor chip is an SOC chip for a tablet or smartphone.

Assignees

• Univ Nevada
• Intel Corp
• Univ Nevada

Inventors

• Chandra Dhanesh
• Nelson Daryl J
• Tirumala Muralidhar
• Kumar Anupam
• Talekar Anjali

Classifications

• G06F1/203

  for portable computers, e.g. for laptops · CPC title

• G06F1/20 Primary

  Cooling means · CPC title

• F25B17/12

  using desorption of hydrogen from a hydride · CPC title

• H05K7/2029 Primary

  using a liquid coolant with phase change in electronic enclosures (in cabinets of standardized dimensions H05K7/20536; in server cabinets H05K7/20709; in vehicle electronic casings H05K7/20845; in power control electronics H05K7/2089; in displays H05K7/20954) · CPC title

• F25B49/046

  Operating intermittently · CPC title