Thermoelectric cooling device arrays

• US 7,436,059 B1
• Filed: 11/17/2006
• Issued: 10/14/2008
• Est. Priority Date: 11/17/2006
• Status: Active Grant

• Current Assignee: Oracle America, Inc. (Oracle Corporation)
• Original Assignee: Sun Microsystems Incorporated (Oracle Corporation)
• Inventors: Ouyang, Chien
• Primary Examiner(s): POTTER, ROY KARL
• Application Number:
  US11/601,527
• Time in Patent Office: 697 Days
• Field of Search: 257/712, 257/713, 257/718
• US Class Current: 257/712
• CPC Class Codes: F25B 2321/021 Control thereof
• CPC Class Codes: H01L 23/34 Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements thermal treatment apparatus H01L21/00
• CPC Class Codes: H01L 23/38 Cooling arrangements using the Peltier effect
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H10N 10/13 characterised by the heat-exchanging means at the junction

Abstract

In various embodiments, a TEC device array may be coupled to a chip and a heat sink to cool the chip. The TEC device array may include multiple TEC devices separately controlled to provide different cooling rates at different points in the TEC device array coupled to the chip. In some embodiments, temperature data for areas on the chip or for separate electronic components may be determined using one or more thermal sensors and then sent to a controller. The controller may then determine an appropriate response for the TEC devices in the TEC device array near the area of the thermal sensor(s). The controller may thus control the cooling rates (which may be different) of several TEC devices in the TEC device array.

Claims

1. An apparatus, comprising:

a plurality of thermoelectric cooling devices (TEC devices) forming a TEC device array; and

a controller coupled to at least two TEC devices in the TEC device array;

wherein the controller is operable to control a cooling rate of each of the at least two TEC devices in the TEC device array;

wherein the controller is operable to control a cooling rate of at least one TEC device of the at least two TEC devices in the TEC device array separately from another TEC device of the at least two TEC devices in the TEC device array.

2. The apparatus of claim 1, further comprising at least one thermal sensor coupled to the controller, wherein the controller is operable to control the cooling rate of the at least one TEC device of the at least two TEC devices in the TEC device array in response to data from the at least one thermal sensor.

3. The apparatus of claim 2,

wherein the at least one thermal sensor is operable to measure temperature data of an electronic component on a chip coupled to the TEC device array;

and

wherein the chip is a microprocessor.

4. The apparatus of claim 2,

wherein the at least one thermal sensor is operable to measure temperature data of an electronic component on a chip coupled to the TEC device array;

and

wherein the TEC device array is operable to be coupled to a package lid coupled to the chip.

5. The apparatus of claim 1, wherein the controller is operable to separately control each TEC device of the at least two TEC devices in the TEC device array coupled to a chip to cool different respective areas of the chip associated with each TEC device of the at least two TEC devices at different respective cooling rates.

6. An apparatus, comprising:

an electronic element comprising a plurality of electronic components;

a plurality of thermoelectric cooling devices (TEC devices) forming a TEC device array coupled to the electronic element;

a controller coupled to at least two TEC devices in the TEC device array; and

a thermal sensor coupled to the controller;

wherein the controller is operable to control a cooling rate of at least one TEC device of the at least two TEC devices in the TEC device array separately from another TEC device of the at least two TEC devices in the TEC device array.

7. The apparatus of claim 6, further comprising a package lid coupled to the electronic element, wherein the TEC device array is coupled to the package lid.

8. The apparatus of claim 7, further comprising a heat sink coupled to the package lid, wherein the heat sink is operable to remove heat from the TEC device array.

9. The apparatus of claim 8, wherein at least one TEC device of the TEC device array is placed on the package lid in a position for the at least one TEC device to be aligned with an electronic component on the electronic element when the package lid is coupled to the electronic element.

10. The apparatus of claim 6,

wherein the electronic element emits heat in a non-uniform pattern over a surface of the electronic element;

and

wherein the non-uniform pattern comprises at least one lower heat generation area and at least one higher heat generation area.

11. The apparatus of claim 10,

wherein the non-uniform pattern of heat emission changes over time;

and

wherein the controller is operable to adjust the cooling rate of the at least one TEC device of the at least two TEC devices in the TEC device array to increase uniformity of heat emission over the surface of the electronic element.

12. The apparatus of claim 6,

wherein the thermal sensor is operable to measure temperature data of at least one electronic component in the plurality of electronic components;

and

wherein the controller is operable to control the cooling rate of the at least one TEC device of the at least two TEC devices in the TEC device array in response to the measured temperature data from the thermal sensor.

13. The apparatus of claim 12, wherein the thermal sensor is embedded in the at least one electronic component of the plurality of electronic components.

14. The apparatus of claim 6, further comprising a plurality of thermal sensors, wherein the plurality of thermal sensors includes the thermal sensor coupled to the controller, wherein, in response to a thermal sensor of the plurality of thermal sensors detecting an increase in temperature, the controller is operable to increase a cooling rate of a TEC device of the plurality of TEC devices near the thermal sensor of the plurality of thermal sensors detecting the increase in temperature.

15. The apparatus of claim 6, further comprising:

a plurality of thermal sensors, wherein the plurality of thermal sensors includes the thermal sensor coupled to the controller; and

wherein, in response to a thermal sensor of the plurality of thermal sensors detecting a decrease in temperature, the controller is operable to decrease a cooling rate of a TEC device of the plurality of TEC devices near the thermal sensor of the plurality of thermal sensors detecting the decrease in temperature.

16. An apparatus, comprising:

an electronic element, wherein the electronic element comprises a plurality of electronic components;

a package lid coupled to the electronic element;

a heat sink coupled to the package lid, wherein the heat sink is operable to remove heat from the package lid;

a plurality of TEC devices, forming a TEC device array, coupled to the package lid, wherein the TEC device array is operable to transfer heat from the electronic components to the package lid; and

a controller coupled to at least two TEC devices in the TEC device array;

wherein the controller is operable to control a cooling rate of at least one TEC device of the at least two TEC devices in the TEC device array separately from another TEC device of the at least two TEC devices in the TEC device array.

17. The apparatus of claim 16, further comprising:

a thermal sensor coupled to at least one electronic component of the plurality of electronic components and to the controller;

wherein the thermal sensor is operable to measure temperature data of the at least one electronic component of the plurality of electronic components; and

wherein the controller is operable to control the cooling rate of the at least one TEC device of the at least two TEC devices in the TEC device array separately from another TEC device of the at least two TEC devices in the TEC device array in response to the measured temperature data from the thermal sensor.

18. The apparatus of claim 16, wherein the heat sink further comprises a liquid heat pump.

19. The apparatus of claim 16, wherein the heat sink further comprises a plurality of heat pipes, wherein at least one of the plurality of heat pipes are aligned with at least one TEC device in the plurality of TEC devices.

20. The apparatus of claim 16, further comprising a printed circuit board (PCB) coupled to the electronic element.