Rotating electrical machine
A rotating electrical machine such that positional deviation caused by a part tolerance can be absorbed in an electrical connection between a power conversion device and a rotating electrical machine main body, and size can be reduced without a structure becoming complex, is obtained. The rotating electrical machine is characterized by including a power terminal unit of the rotating electrical machine main body housed in a housing, the power conversion device fixed to the housing, and a multilayer bus bar connected to the power terminal unit of the rotating electrical machine main body as a power terminal of the power conversion device, wherein the multilayer bus bar has flexibility, and is bent by being connected to the power terminal unit.
1. A rotating electrical machine, comprising:
a power terminal unit of a rotating electrical machine main body housed in a housing;
a power conversion device fixed to the housing; and
a multilayer bus bar connected to the power terminal unit of the rotating electrical machine main body and a terminal unit of the power conversion device, wherein
the multilayer bus bar has flexibility, and is bent by being connected to the power terminal unit,
the multilayer bus bar includes a first through hole for screw-fastening to the power terminal unit and a second through hole for screw-fastening to the terminal unit of the power conversion device, and
a first gap between the first through hole and a first screw inserted into the first through hole is larger than a second gap between the second through hole and a second screw inserted into the second through hole.
2. The rotating electrical machine according to claim 1 , wherein the multilayer bus bar is a structure wherein a multiple of thin plates are stacked, and an other end portion on a side opposite to that of a one end portion fastened to the power terminal unit is integrated by welding.
3. The rotating electrical machine according to claim 2 , wherein the one end portion of the multilayer bus bar fastened to the power terminal unit is integrated by welding.
4. The rotating electrical machine according to claim 3 , wherein a thickness of an uppermost layer or a lowermost layer of the multiple of thin plates is greater than thicknesses of the other thin plates configuring the multilayer bus bar.
5. The rotating electrical machine according to claim 2 , wherein a thickness of an uppermost layer or a lowermost layer of the multiple of thin plates is greater than thicknesses of the other thin plates configuring the multilayer bus bar.
6. The rotating electrical machine according to claim 1 , wherein the multilayer bus bar is a structure wherein a multiple of thin plates are stacked, and is integrated by crimping.
7. The rotating electrical machine according to claim 6 , wherein a thickness of an uppermost layer or a lowermost layer of the multiple of thin plates is greater than thicknesses of the other thin plates configuring the multilayer bus bar.
8. The rotating electrical machine according to claim 1 , wherein a bearing surface diameter of the first screw is larger than a bearing surface diameter of the second screw.