ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,871, issued on Dec. 30, was assigned to FCA US LLC (Auburn Hills, Mich.).
"Refrigerant-coolant heat pump system of electric vehicles" was invented by Meng Li (Lake Orion, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A heat pump system includes a refrigerant loop and a coolant loop. The refrigerant loop includes a compressor, a water condenser, an expansion valve, and a chiller. The coolant loop includes two water pumps, a one-way valve, six three-way valves, a cabin cooler, a cabin heater, a battery pack, and an electric drive system. An electric heater is used to generate additional heat power for cabin heating. A fan and a blower are used ...