Power conversion apparatus

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.