US 12,454,173 B2
Electric vehicle cooling system
Yusuke Mikuni, Aki-gun (JP); Takafumi Tanehira, Aki-gun (JP); and Chinami Morishima, Aki-gun (JP)
Assigned to Mazda Motor Corporation, Hiroshima (JP)
Filed by Mazda Motor Corporation, Hiroshima (JP)
Filed on Mar. 23, 2023, as Appl. No. 18/188,718.
Claims priority of application No. 2022-061858 (JP), filed on Apr. 1, 2022.
Prior Publication US 2023/0311638 A1, Oct. 5, 2023
Int. Cl. B60K 11/04 (2006.01); H02K 9/193 (2006.01); H02K 11/25 (2016.01); H02K 11/33 (2016.01)
CPC B60K 11/04 (2013.01) [H02K 9/193 (2013.01); H02K 11/25 (2016.01); H02K 11/33 (2016.01); B60L 2210/10 (2013.01); B60L 2210/40 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A cooling system for an electric vehicle, comprising:
a drive unit disposed in a front part of the vehicle;
a charger disposed rearward of the drive unit;
a coolant circuit connected to the drive unit and the charger and having a bypass route bypassing the charger,
a pump provided in the coolant circuit and configured to send coolant to the coolant circuit;
a heat exchanger provided in the coolant circuit and configured to cool the coolant;
at least one temperature sensor provided to the drive unit and configured to detect a temperature of the drive unit; and
a control device configured to control circulation of the coolant to the coolant circuit based on the temperature of the drive unit detected by the at least one temperature sensor,
wherein the control device is configured to:
send the coolant to the bypass route, when the charger is not in operation, and when the temperature of the drive unit is below a given temperature; and
send the coolant to the drive unit after sending the coolant to the charger, when the charger is not in operation, and when the temperature of the drive unit is above the given temperature,
wherein the drive unit includes a plurality of electric devices,
wherein the at least one temperature sensor is a plurality of temperature sensors, each provided to a respective one of the plurality of electric devices, and
wherein the control device is configured to change a sending order of the coolant to the electric devices according to the temperatures of the electric devices.