US 12,178,024 B2
Cooling system with flow rate regulation
Masaaki Katayama, Tokyo (JP); Naoyuki Kishimoto, Susono (JP); Daisuke Tokozakura, Susono (JP); and Satoshi Tominaga, Susono (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Feb. 18, 2022, as Appl. No. 17/675,601.
Claims priority of application No. 2021-041835 (JP), filed on Mar. 15, 2021.
Prior Publication US 2022/0295675 A1, Sep. 15, 2022
Int. Cl. H05K 7/20 (2006.01); B60L 58/26 (2019.01); B60K 1/00 (2006.01)
CPC H05K 7/20945 (2013.01) [B60L 58/26 (2019.02); H05K 7/20927 (2013.01); B60K 2001/005 (2013.01); B60K 2001/006 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A cooling system, comprising:
a first cooling passage in which a first cooling object is cooled by first coolant;
a flow passage configured to supply the first coolant to a second cooling object from the first cooling passage;
a first coolant temperature sensor that measures a temperature of the first coolant;
a first cooling object temperature sensor that measures a temperature of the first cooling object;
a flow rate regulation mechanism that includes a switching valve and is configured to regulate a flow rate of the first coolant flowing in the first cooling passage; and
a controller configured to control the flow rate regulation mechanism, wherein:
the controller controls the flow rate regulation mechanism based on the temperature of the first coolant or the temperature of the first cooling object so that the flow rate of the first coolant flowing in the first cooling passage is lower when temperature of the first cooling object is lower than temperature of the first coolant, than the flow rate of the first coolant when the temperature of the first cooling object is equal to or higher than the temperature of the first coolant.