US 11,935,814 B2
Motor drive device
Hyun Koo Lee, Seoul (KR); Jun Hee Park, Suwon-si (KR); Sang Cheol Shin, Suwon-si (KR); and Kang Ho Jeong, Hwaseong-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 Aug. 20, 2021, as Appl. No. 17/407,494.
Claims priority of application No. 10-2020-0179875 (KR), filed on Dec. 21, 2020.
Prior Publication US 2022/0199491 A1, Jun. 23, 2022
Int. Cl. H05K 7/20 (2006.01); H01L 23/46 (2006.01); H02M 7/00 (2006.01); H02P 27/08 (2006.01)
CPC H01L 23/46 (2013.01) [H02M 7/003 (2013.01); H02P 27/08 (2013.01); H05K 7/20936 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A motor drive device comprising:
a first inverter comprising a plurality of first switching elements each of which being connected to first ends of a plurality of coils corresponding to a plurality of phases in a motor;
a second inverter comprising a plurality of second switching elements each of which being connected to second ends of the plurality of coils;
a plurality of transfer switching elements connected to the second ends of the plurality of coils, the plurality of transfer switching elements configured to open or block electrical connection between the second ends;
a capacitor disposed at one side of a casing of the motor which is disposed to be adjacent a rotary shaft;
first and second cooling channels disposed at both sides of the capacitor, respectively, each of the first and second cooling channels having an interior into which a coolant is supplied;
a plurality of first power modules each comprising some of the plurality of first switching elements and some of the transfer switching elements; and
a plurality of second power modules each comprising some of the plurality of second switching elements,
wherein the plurality of first power modules and the plurality of second power modules are disposed to be in contact with the first or second cooling channel, and
wherein the number of power modules being in contact with the first cooling channel and the number of power modules being in contact with the second cooling channel are equal to each other.