Hitachi Astemo Ltd.

Hitachi Automotive Systems, Ltd.

Seigo Misaki

Takayuki Koizumi

Yasuyuki Saito

Hisaya Shimizu

Yuji Kano

Hiroshi Hamano

Yousuke Umesaki

Shingo Kitajima

To provide a rotary electrical machine having a novel configuration adapted to provide axial downsizing of the rotary electrical machine when connecting an electrical connection conductor to a welded side terminal section of a coil end of a segment coil. The rotary electrical machine includes: a stator coreincluding slots radially extended in a radial fashion; a plurality of segment coilsradially stacked and accommodated in the slot; and a neutral point bus-barlaid on a side of a welded coil end of the segment coiland including a connection wiring section and a connection section for interconnecting the different segment coils. In a state where the segment coilsare mounted, at least a part of the connection wiring section is laid in a radial space RS radially defined by the segment coils. The connection wiring section can be laid in the radial space RS radially defined by the segment coilsso that axial elongation of a configuration space for the electrical connection conductoris prevented. Thus, the axial downsizing of the rotary electrical machine can be achieved.

Rotary electrical machine

Provided is a rotary electric machine which is configured to draw three-phase output lines from a connection side coil end by an easy process. A stator for a rotary electric machine according to the present invention includes a plurality of segment coils including connection-side winding portions and non-connection-side winding portions. The connection-side winding portions are arranged on one side of a stator core and connected to slots with the same slot pitch, and the non-connection-side winding portions are arranged on the other side of the stator core and inserted into the slots with a plurality of kinds of slot pitches. The connection-side winding portions include a first connection group and a second connection group. The first connection group is provided with a plurality of terminal portions for connecting the segments, and the second connection group connects layers different from those in the first connection group, and is provided with a plurality of terminal portions.

Stator for rotary electric machine and rotary electric machine using same

Provided are a rotor of a rotary electrical machine, a rotary electrical machine, and a vehicle, which enable mitigation of stress concentration generated in a magnet insertion hole of a rotor core and high-speed rotation. A rotorof a rotary electrical machine includes: a rotor coreincluding a plurality of magnet insertion holesfor each magnetic pole; and permanent magnetsinserted into the magnet insertion holes, in which a bridge portion, which mechanically connects a rotor core portionon the outer circumferential side of the magnet insertion holesand a rotor core portionon the inner circumferential side of the magnet insertion holes, is provided between the adjacent magnet insertion holes, and the bridge portionhas two inflection pointsandon the outer circumferential side of the bridge portion

Rotor of rotary electrical machine, rotary electrical machine, and vehicle

TIG welding can be applied, and short circuiting of stator winding due to a jointing material of coil conductors is prevented. A rotating electric machine includes a rotor; and a stator having a stator core and a stator winding, wherein the stator winding has a plurality of coil conductors, and joint parts connecting ends of the coil conductors protruding from an end face of the stator core, and the ends of the coil conductors have weir portions formed for blocking flow of metal of the joint parts.

Growing community of inventors

Hitachinaka, Japan

Seigo Misaki