US Patent 10343487 Vehicle heating and cooling system and control method

A vehicle having a heating and cooling system includes a refrigerant loop having first and second heat exchangers, and a coolant loop. The coolant loop includes a plurality of valves directing a first flow of coolant through a first refrigerant-to-coolant heat exchanger, a second flow of coolant through a second refrigerant-to-coolant heat exchanger, and a third flow of coolant including a first portion of the first flow of coolant exiting the first refrigerant-to-coolant heat exchanger and a first portion of the second flow of coolant exiting the second refrigerant-to-coolant heat exchanger through an auxiliary coolant loop, and a control module for controlling the plurality of valves to direct the flows of coolant dependent upon a mode of operation. The auxiliary coolant loop is for heating/cooling one or more components, such as a battery, dependent upon the mode of operation.