The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 06, 2017
Filed:
Sep. 17, 2014
GM Global Technology Operations Llc, Detroit, MI (US);
Mark D. Nemesh, Troy, MI (US);
John T. Guerin, Bloomfield, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A thermal management system for a battery pack having a conductive cooling plate and battery cells includes a compressor, flow control valves, temperature sensor(s), and a controller. The compressor circulates refrigerant through the plate to cool the cells. The temperature sensor measures a temperature of the battery pack. The controller is programmed to receive the temperature from the temperature sensors and selectively transmit switching control signals to the valves to command a change in direction or flow of the refrigerant through the cooling plate. This limits a temperature variance between the battery cells over time. A vehicle includes a transmission, an electric traction motor, a battery pack, and the thermal management system noted above. A method includes receiving the temperature, transmitting switching control signals to the valves, and controlling a flow of refrigerant through the plate via the valves in response to the switching control signals.