US 12,252,003 B2
Vehicle temperature control system
Takuya Honjo, Tokyo (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Aug. 30, 2022, as Appl. No. 17/898,912.
Claims priority of application No. 2021-153638 (JP), filed on Sep. 21, 2021.
Prior Publication US 2023/0093610 A1, Mar. 23, 2023
Int. Cl. B60K 11/08 (2006.01); B60K 1/00 (2006.01)
CPC B60K 11/085 (2013.01) [B60K 2001/006 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A vehicle temperature control system, comprising:
a first temperature control circuit that is provided with a first pump and that is configured to perform temperature control of a rotary electric machine and a gearbox provided in a vehicle;
a second temperature control circuit that is provided with a second pump and that is configured to perform temperature control of an electric-power conversion unit provided in the vehicle;
a heat exchanger in which heat exchange between a first temperature control medium circulating through the first temperature control circuit and a second temperature control medium circulating through the second temperature control circuit is performed; and
a control device,
wherein the first temperature control circuit includes a first temperature sensor configured to detect a temperature of the first temperature control medium,
wherein the second temperature control circuit includes
a second temperature sensor configured to detect a temperature of the second temperature control medium,
a radiator with which heat exchange between the second temperature control medium and outside air is performed,
a first branch flow path of the second temperature control medium that bypasses the heat exchanger,
a second branch flow path of the second temperature control medium that passes through the heat exchanger, and
a flow rate control valve with which a flow rate of the second temperature control medium to the second branch flow path is controlled, and
wherein the control device is capable of controlling the flow rate control valve based on the temperature of the first temperature control medium detected by the first temperature sensor and the temperature of the second temperature control medium detected by the second temperature sensor, and
in a case where the temperature of the first temperature control medium is lower than the temperature of the second temperature control medium and the temperature of the second temperature control medium is higher than a predetermined value, the control device controls the flow rate control valve such that a flow rate to the second branch flow path is larger than a flow rate in a case where the temperature of the first temperature control medium is higher than the temperature of the second temperature control medium.