Refrigerant system for cooling electronics

Patent metadata

Field	Value
Publication number	US-11448441-B2
Application number	US-201816046711-A
Country	US
Kind code	B2
Filing date	Jul 26, 2018
Priority date	Jul 27, 2017
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

The various implementations described herein include methods, devices, and systems for cooling a vehicular electronics system. In one aspect, a vehicular refrigerant system includes: (1) a refrigerant loop having a compressor configured to compress a refrigerant, a condenser configured to condense the compressed refrigerant, an expansion device configured to enable expansion of the condensed refrigerant, and a heat exchanger configured to transfer heat from a liquid coolant to the expanded refrigerant; (2) a liquid coolant loop configured to transfer heat from an electronics system via the liquid coolant; and (3) a controller configured to: (a) obtain operating data regarding the refrigerant, the liquid coolant, and/or the electronics system; and (b) adjust operation of the refrigerant loop and/or the liquid coolant loop based on the obtained operating data.

First claim

What is claimed is:

1. A vehicular electronics cooling system, comprising:
a refrigerant loop, comprising:
a compressor configured to compress a refrigerant to a compressed refrigerant;
a condenser configured to condense the compressed refrigerant to a condensed refrigerant;
an expansion device configured to expand the condensed refrigerant to an expanded refrigerant; and
a first sensor configured to monitor operation of the refrigerant loop;

a liquid coolant loop comprising:
a liquid coolant pump configured to pump a liquid coolant through the liquid coolant loop, the liquid coolant loop configured to transfer heat from an electronics system via the liquid coolant, wherein the electronics system is separate and distinct from the refrigerant loop;
a heat exchanger coupled to the refrigerant loop and the liquid coolant loop, the heat exchanger configured to transfer heat from the liquid coolant in the liquid coolant loop to the expanded refrigerant in the refrigerant loop; and
a second sensor configured to monitor operation of the liquid coolant loop; and

a controller communicatively coupled to the refrigerant loop and the liquid coolant loop, the controller configured to:
obtain operating data, via the first and second sensors, indicative of cooling requirements of the electronics system, wherein the operating data comprises at least electric current data from at least one component of the electronics system; and
adjust speed of one or more components of the vehicular electronics cooling system based on a combination of the operating data of both the first and second sensors.

2. The vehicular electronics cooling system of claim 1 , wherein the operating data includes information regarding one or more of: a temperature of the electronics system, a temperature of the refrigerant, a pressure of the refrigerant, and a temperature of the liquid coolant.

3. The vehicular electronics cooling system of claim 1 , wherein adjusting speed of the one or more components includes one or more of: adjusting a compressor compression ratio, adjusting a compressor speed, adjusting a condenser fan speed, and adjusting a liquid coolant pump speed.

4. The vehicular electronics cooling system of claim 1 , further comprising a fluid reservoir coupled to the refrigerant loop and configure to store the refrigerant;
wherein the controller is further configured to transfer refrigerant between the fluid reservoir and the refrigerant loop in accordance with the operating data.

5. The vehicular electronics cooling system of claim 1 , wherein adjusting operation of the one or more components includes disabling the compressor in accordance with a determination that a temperature of the electronics system is below a threshold temperature.

6. The vehicular electronics cooling system of claim 1 , further comprising a secondary heat exchanger for exchanging heat between the refrigerant and air.

7. The vehicular electronics cooling system of claim 1 , further comprising a secondary heat exchanger for exchanging heat between the liquid coolant and air.

8. The vehicular electronics cooling system of claim 1 , wherein the first sensor includes one or more temperature sensors thermally coupled to the refrigerant loop and the second sensor includes one or more temperature sensors thermally coupled to one or more of: the liquid coolant loop and the electronics system.

9. The vehicular electronics cooling system of claim 1 , wherein the operating data comprises electric current data from the compressor.

10. The vehicular electronics cooling system of claim 1 , wherein the operating data comprises information regarding a refrigerant charge level.

11. The vehicular electronics cooling system of claim 1 , wherein the controller is communicatively coupled to a display and is configured to transmit system data to the display for presentation to a user.

12. A method for cooling an electronics system, comprising:
cooling the electronics system by operating a vehicular electronics cooling system in a first state, the cooling system comprising a refrigerant loop including a condenser and a compressor and thermally coupled to the electronics system via a liquid coolant loop, wherein the electronics system is separate and distinct from the refrigerant loop of the cooling system;
while operating the cooling system in the first state, obtaining operating data indicative of cooling requirements of the electronics system from one or more sensors of the cooling system, wherein:
the one or more sensors include a first sensor configured to monitor operation of the refrigerant loop and a second sensor configured to monitor operation of the liquid coolant loop, and
the operating data comprises at least electric current data from at least one component of the electronics system; and

transitioning to operating the cooling system in a second state based on a combination of the operating data obtained from both the first and second sensors.

13. The method of claim 12 , wherein transitioning to operating in the second state includes adjusting a compressor speed.

14. The method of claim 12 , wherein transitioning to operating in the second state includes adjusting a condenser fan speed.

15. The method of claim 12 , wherein transitioning to operating in the second state includes adjusting a pump speed for a liquid coolant pump of the cooling system.

16. The method of claim 12 , wherein the operating data includes information regarding one or more of: a temperature of the electronics system, a temperature of the liquid coolant, and a temperature of a refrigerant of the cooling system.

17. The method of claim 12 , wherein the operating data includes information regarding a pressure or flow rate of refrigerant in the cooling system.

18. The method of claim 12 , wherein the operating data indicates that the electronics system does not require active cooling; and
wherein operating in the second state includes disabling a portion of the cooling system.

19. The method of claim 18 , wherein disabling the portion of the cooling system includes disabling the compressor.

20. The method of claim 18 , wherein disabling the portion of the cooling system includes disabling a refrigerant loop of the cooling system while maintaining operation of a liquid coolant pump of the cooling system.

21. The vehicular electronics cooling system of claim 1 , wherein the controller is configured to adjust speed of one or more components of the vehicular electronics cooling system based on the electric current data from at least one component of the electronics system.

22. The vehicular electronics cooling system of claim 1 , wherein the vehicular electronics cooling system is disposed at an exterior surface of a vehicle.

Assignees

• Bergstrom Inc

Inventors

• Zeigler Terry
• Connell Brett S

Classifications

• F25B2700/21171

  of the fluid cooled by the evaporator · CPC title

• F25B2600/0253

  with variable speed · CPC title

• B60H1/3213 Primary

  for increasing the efficiency in a vehicle heat pump · CPC title

• H05K7/20881

  Liquid coolant with phase change · CPC title

• B60H1/3211

  for increasing the efficiency of a vehicle refrigeration cycle · CPC title