Patent ID: 8018103

Claim:
A driving mechanism comprising: a rotating electrical machine; an inverter capable of supplying electric power to said rotating electrical machine; an electrical device connected to said inverter; a containing case capable of containing said rotating electrical machine, said inverter, and said electrical device; and a cooling coolant circulation circuit, distributing cooling coolant capable of cooling said inverter and said electrical device, which allows said inverter to be cooled at an upstream side relative to said electrical device in a direction in which said cooling coolant is distributed; a rotating electrical machine coolant circulation circuit distributing rotating electrical machine coolant for cooling said rotating electrical machine; and a heat exchange portion capable of exchanging heat between said cooling coolant and said rotating electrical machine coolant, said rotating electrical machine including a first rotating electrical machine and a second rotating electrical machine, said rotating electrical machine coolant circulation circuit including a first reservoir storing first rotating electrical machine coolant for cooling said first rotating electrical machine, and a second reservoir storing second rotating electrical machine coolant for cooling said second rotating electrical machine, and said cooling coolant circulation circuit passing by a perimeter of said first reservoir at an upstream side relative to said second reservoir in the direction in which said cooling coolant is distributed, so as to enable heat exchange between said first rotating electrical machine coolant and said cooling coolant.