US 12,419,012 B2
Power conversion apparatus
Shigeyuki Nakabayashi, Chuo-ku (JP); Shotaro Murakami, Chuo-ku (JP); and Ikuto Udagawa, Chuo-ku (JP)
Assigned to TMEIC CORPORATION, Chuo-ku (JP)
Appl. No. 17/640,998
Filed by TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION, Chuo-ku (JP)
PCT Filed Oct. 9, 2019, PCT No. PCT/JP2019/039820
§ 371(c)(1), (2) Date Mar. 7, 2022,
PCT Pub. No. WO2021/070283, PCT Pub. Date Apr. 15, 2021.
Prior Publication US 2022/0346272 A1, Oct. 27, 2022
Int. Cl. H05K 7/20 (2006.01); H02M 7/00 (2006.01)
CPC H05K 7/20272 (2013.01) [H02M 7/003 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A power conversion apparatus comprising:
a first stage on which a first module is mounted;
a second stage stacked on the first stage and on which a second module is mounted; and
a coolant circulation circuit that allows a coolant to circulate through the first and second modules,
the coolant circulation circuit including
a first cooling pipe disposed on the first stage, the first cooling pipe allowing the coolant to pass through the first module,
a second cooling pipe disposed on the second stage, the second cooling pipe allowing the coolant to pass through the second module,
a first connecting member provided at an opening end of the first cooling pipe,
a second connecting member provided at an opening end of the second cooling pipe,
a connecting pipe that connects the first connecting member and the second connecting member,
a first coupler that couples a first end portion of the connecting pipe to the first connecting member, and
a second coupler that couples a second end portion of the connecting pipe to the second connecting member,
wherein the connecting pipe has an insulating pipe disposed between the first end portion and the second end portion,
wherein the insulating pipe is formed of resin and has a curved portion, the curved portion being configured to impart flection to the insulating pipe,
wherein
each of the first connecting member and the second connecting member includes:
a tubular portion extending in a stack direction in which the second stage is stacked on the first stage,
a first connecting portion that is provided at an upper end in the stack direction of the tubular portion, and
a second connecting portion that is provided at a lower end in the stack direction of the tubular portion, and
wherein
the first coupler couples the first end portion of the connecting pipe to the first connecting portion of the first connecting member, and
the second coupler couples the second end portion of the connecting pipe to the second connecting portion of the second connecting member.