System and method for cooling and cycling a battery pack

• US 8,716,981 B2
• Filed: 11/11/2011
• Issued: 05/06/2014
• Est. Priority Date: 11/11/2011
• Status: Active Grant

• Current Assignee: LG Energy Solution Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: Oswandel, Kenneth, Arseneault, Scott
• Primary Examiner(s): WILLIAMS, ARUN C
• Application Number:
  US13/294,281
• Publication Number:
  US 20130119937A1
• Time in Patent Office: 907 Days
• Field of Search: 320/130
• US Class Current: 320/130
• CPC Class Codes: H01M 10/4285 Testing apparatus
• CPC Class Codes: H01M 10/443 in response to temperature
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/635 based on ambient temperature
• CPC Class Codes: H01M 10/6564 using compressed gas
• CPC Class Codes: H01M 10/66 Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A system and a method for cooling and cycling a battery pack is provided. The system includes an air supplying device that outputs pressurized air. The system further includes a vortex tube that receives the pressurized air and outputs cooled air at a first temperature level utilizing the pressurized air. The system further includes at least one heat exchanger disposed in the battery pack that receives the cooled air from the vortex tube and cools the battery pack. The system further includes a battery cycling device configured to charge and discharge the battery pack when the battery pack is being cooled.

Claims

1. A system for cycling a battery pack, comprising:

an air supplying device configured to output pressurized air; and

a vortex tube configured to receive the pressurized air from the air supplying device and to output cooled air at a first temperature level utilizing the pressurized air;

at least one heat exchanger disposed in the battery pack that is configured to receive the cooled air from the vortex tube and to cool the battery pack; and

a battery cycling device electrically being coupled to the battery pack, the battery cycling device configured to charge and discharge the battery pack when the battery pack is being cooled.

2. The system of claim 1, further comprising:

a temperature sensor disposed proximate to the battery pack that generates a temperature signal indicative of a temperature level of the battery pack; and

a computer operably coupled to a temperature sensor and to the battery cycling device, the computer configured to receive the temperature signal and to determine the temperature level of the battery pack based on the temperature signal; and

if the temperature level is less than a threshold temperature level, the computer further configured to generate a control signal to induce the battery cycling device to charge and discharge the battery pack.

3. The system of claim 1, wherein the threshold temperature level is 25 degrees Celsius.

4. The system of claim 1, further comprising a pressure regulator fluidly coupled between the vortex tube and the battery pack, the pressure regulator configured to maintain a pressure level of the cooled air below a threshold pressure level.

5. The system of claim 4, wherein the threshold pressure level is 15 pounds-per-square inch.

6. A method for cycling a battery pack, comprising:

outputting pressurized air from an air supplying device;

receiving the pressurized air from the air supplying device at a vortex tube and outputting cooled air from the vortex tube at a first temperature level in response to the pressurized air;

receiving the cooled air from the vortex tube in at least one heat exchanger disposed in the battery pack and cooling the battery pack utilizing the heat exchanger; and

charging and discharging the battery pack utilizing a battery cycling device when the battery pack is being cooled.

7. The method of claim 6, further comprising:

generating a temperature signal indicative of a temperature level of the battery pack utilizing a temperature sensor disposed proximate to the battery pack; and

determining the temperature level of the battery pack based on the temperature signal utilizing a computer; and

if the temperature level is less than a threshold temperature level, then generating a control signal to induce the battery cycling device to charge and discharge the battery pack utilizing the computer.

8. The method of claim 6, wherein the threshold temperature level is 25 degrees Celsius.

9. The method of claim 6, further comprising maintaining a pressure level of the cooled air below a threshold pressure level utilizing a pressure regulator fluidly coupled between the vortex tube and the battery pack.

10. The method of claim 9, wherein the threshold pressure level is 15 pounds-per-square inch.