Patent ID: 11897315
Assignee: SUBARU CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A thermal management system for a battery electric vehicle, comprising:
a motor for traveling;
a motor cooler configured to cool the motor with a heat medium;
an outside air heat exchanger configured to exchange heat between the heat medium and an outside air;
a heater configured to warm a vehicle cabin using heat of the heat medium;
a circulation channel through which the heat medium flows, the circulation channel connecting the motor cooler, the outside air heat exchanger, and the heater;
a switching valve connected to the circulation channel, and configured to select a first valve position in which the heat medium circulates between the outside air heat exchanger and the heater and the heat medium is inhibited from flowing between the outside air heat exchanger and the motor cooler, and a second valve position in which the heat medium circulates between the outside air heat exchanger and the motor cooler and the heat medium is inhibited from flowing between the outside air heat exchanger and the heater; and
a controller configured to control the switching valve,
wherein, in a heating mode of operating the heater, the controller sets the switching valve in the first valve position when a temperature of the motor is lower than a given motor temperature threshold value, and sets the switching valve in the second valve position when the temperature of the motor is higher than the motor temperature threshold value, and
wherein, in the heating mode, when a load or a load predicted value of the motor exceeds a given load threshold value, the controller holds the switching valve in the second valve position during a predetermined holding time, irrespective of the temperature of the motor.