US 12,434,550 B2
Cooling system for in-wheel motor vehicles
Yeon Ho Kim, Seoul (KR); Su Whan Kim, Hwaseong-si (KR); Ho Young Jeong, Hwaseong-si (KR); Hwang Hi Park, Seongnam-si (KR); Jae Yeon Kim, Hwaseong-si (KR); and Sang Moon Cho, Anyang-si (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Jul. 27, 2023, as Appl. No. 18/360,428.
Claims priority of application No. 10-2023-0068872 (KR), filed on May 30, 2023.
Prior Publication US 2024/0399849 A1, Dec. 5, 2024
Int. Cl. B60K 7/00 (2006.01); B60H 1/00 (2006.01); B60K 11/02 (2006.01); B60K 11/04 (2006.01); F01P 5/10 (2006.01)
CPC B60K 7/0007 (2013.01) [B60K 11/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A cooling system for in-wheel motor vehicles, the cooling system comprising:
first coolant flow paths provided in a plurality of in-wheel motors mounted in wheels of a vehicle;
second coolant flow paths provided in a plurality of inverters configured to drive and control the plurality of in-wheel motors;
a radiator configured to pass therethrough a coolant having cooled the plurality of inverters and the plurality of in-wheel motors so as to dissipate heat from the coolant;
a coolant circulation line connecting the second coolant flow paths, the first coolant flow paths, and the radiator and configured to circulate the coolant through the second coolant flow paths, the first coolant flow paths, and the radiator, wherein a portion of the coolant circulation line located at upstream sides of the plurality of inverters based on a coolant circulation path is branched off into secondary coolant circulation lines connected to respective inverters of the plurality of inverters; and
water pumps disposed on the coolant circulation line, the water pumps being configured to pump the coolant in the coolant circulation line so as to circulate the coolant along the coolant circulation line, wherein the coolant pumped by the water pumps is distributed and passes through the plurality of inverters in parallel by way of the secondary coolant circulation lines.