US 12,453,031 B2
Power conversion device
Yusuke Higaki, Tokyo (JP); Takushi Jimichi, Tokyo (JP); Kimiyuki Koyanagi, Tokyo (JP); Takuya Kajiyama, Tokyo (JP); and Akito Nakayama, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 18/289,899
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed May 13, 2021, PCT No. PCT/JP2021/018146
§ 371(c)(1), (2) Date Nov. 8, 2023,
PCT Pub. No. WO2022/239170, PCT Pub. Date Nov. 17, 2022.
Prior Publication US 2024/0251519 A1, Jul. 25, 2024
Int. Cl. H05K 7/14 (2006.01); H02M 3/00 (2006.01)
CPC H05K 7/14322 (2022.08) [H02M 3/003 (2021.05); H05K 7/14329 (2022.08)] 20 Claims
OG exemplary drawing
 
1. A power conversion device comprising:
a pair of unit-converters; and
a cooling device, wherein
each of the pair of unit-converters comprises:
a capacitor;
a switching element in which a cooling surface and a connecting surface opposite to the cooling surface are provided and two electrodes through which main power flows are formed in the connecting surface and by which a leg for power conversion is formed by forming a pair;
a first conductive plate in which a second terminal hole is formed at one end for fixing an electrode of the switching elements forming the pair, the electrode corresponding to a first pole in the leg, and a first terminal hole is formed at the other end for fixing an electrode of the capacitor corresponding to the first pole; and
a second conductive plate in which a second terminal hole is formed at one end for fixing an electrode of the switching elements forming the pair, the electrode corresponding to a second pole in the leg, and a first terminal hole is formed at the other end for fixing an electrode of the capacitor corresponding to the second pole, the second conductive plate being arranged to overlap with the first conductive plate in a thickness direction, maintaining insulation from the first conductive plate, wherein,
in the pair of unit-converters, the cooling surfaces of the switching elements forming the pair in one unit-converter is opposed to the cooling surfaces of the switching elements forming the pair in the other unit-converter with the cooling device interposed therebetween.