US 12,074,507 B2
Rotary electric machine
Yoshihiko Onishi, Tokyo (JP); and Isao Sonoda, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Appl. No. 17/789,675
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Apr. 16, 2020, PCT No. PCT/JP2020/016670
§ 371(c)(1), (2) Date Jun. 28, 2022,
PCT Pub. No. WO2021/210117, PCT Pub. Date Oct. 21, 2021.
Prior Publication US 2023/0034461 A1, Feb. 2, 2023
Int. Cl. H02K 9/22 (2006.01); H02K 5/136 (2006.01); H02K 11/33 (2016.01)
CPC H02K 9/227 (2021.01) [H02K 5/136 (2013.01); H02K 11/33 (2016.01); H02K 2211/03 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A rotary electric machine comprising a control unit, wherein
the control unit includes a switching element, a capacitor, a choke coil, and a heat sink,
the switching element is joined to the heat sink via a switching element heat dissipation material,
the heat sink includes
a recess-shaped choke coil housing portion having a bottom surface joined to an upper surface of the choke coil via a choke coil heat dissipation material, and
a recess-shaped capacitor housing portion having an inner peripheral side surface joined to an outer peripheral side surface of the capacitor via a capacitor heat dissipation material, and
the capacitor housing portion includes
an explosion-proof valve recess located at a position facing an explosion-proof valve of the capacitor, and
a communication passage providing communication between a drive circuit board and the explosion-proof valve.