Hitachi, Ltd.

Hitachi Automotive Systems, Ltd.

Masahiko Honma

Yoshimi Mori

Yasuhiko Kimura

Takeshi Sakai

Toshio Ishikawa

Fuminori Ishikawa

Yutaka Matsunobu

Toshiaki Ueda

Shinji Yamazaki

Hiroshi Kanazawa

Shin Onose

Hiromitsu Okamoto

Satoshi Yamamura

Susumu Tajima

Takahito Muraki

Yosuke Umesaki

Wasei Horioka

Provided is a rotating electrical machine including a housing in which a flow passage of cooling liquid can be easily formed and airtightness and productivity are high. A rotating electrical machine is configured to include a housing which is provided with a part of a flow passage of cooling liquid, a stator which is disposed on an inner circumferential side of the housing and includes a stator winding, and a rotor which is rotatably supported to an inner circumferential side of the stator with a gap between the stator and the rotor and the flow passage of the cooling liquid includes an annular groove having an open surface on at least one side of an axial direction of the housing and a plate provided to cover the open surface. Preferably, the housing and the plate are configured to be joined by welding or an adhesive material. In addition, roughening processing or chemical processing may be performed on parts of the housing and the plate and the housing and the plate may be configured to be joined by a resin.

Rotating electrical machine having means to secure plating to cover a flow passage

A permanent magnet rotating electric machine includes a stator and a rotor disposed with an air gap interposed between the stator and the rotor. The rotor is provided with a rotor core provided with a plurality of magnet insertion holes in a circumferential direction, and a press-fit body pressed into each of the magnet insertion holes. The press-fit body includes a permanent magnet and a magnet fixing member provided on the sides of the permanent magnet. The press-fit body is fixed within the magnet insertion hole in such a way that, in the circumferential direction, one end of the press-fit body makes a line contact with the inner wall of the magnet insertion hole through a line contact portion of the magnet fixing member and the other end thereof makes a surface contact with the inner wall of the magnet insertion holes through a surface contact portion of the magnet fixing member.

Permanent magnet rotating electric machine and method for manufacturing same

A resin composition () containing the following is prepared: a base unsaturated-polyester resin and/or a base vinyl-ester resin; a base radical-polymerizable monomer; a radical-polymerizable monomer having a thermally latent isocyanate group; a photo-radical polymerization initiator; and an alkylborane and/or an alkoxyamine derivative. A stator coil () in a stator () in a dynamo-electric machine () is coated using said resin composition () only, i.e. just the one resin composition. An insulated coated section (A) and a conductor-exposing section (B) of a join-side coil end () are also coated using said resin composition ().

Member for dynamo-electric machine, dynamo-electric machine, and resin composition

An object is to provide a rotating electric machine offering a high output and high efficiency by balancing inductance of each phase even if a stator is used in which stator windings of different phases are disposed in a slot of a stator core in a three-phase winding. A statorincludes a stator corehaving a plurality of slots arrayed circumferentially and opening to an inner peripheral surface and a stator windingwound in each of the slots. The stator windingis divided into at least two for each phase (U-A,U-B,V-A,V-B,W-A,W-B). After insertion of the stator core, the stator winding of each phase is connected in parallel or in series. The stator winding of each phase is disposed in slots such that combined inductance of different phases is equalized.

Stator winding for rotating electric machine

When electric wires (joint conductors) are disposed adjacent each other in a peeled state of coatings, a gap corresponding to the total thickness of both conductors' insulating films as skin layers is formed between end joined face portions of the conductors. The gap becomes larger because the conductors are tapered. Therefore, the adhesion between both conductors is impaired, with a consequent fear of occurrence of joining imperfection. In opposed joined face portions of electric wires (joint conductors), the conductors are deformed from the tips of their axes to the joined face side in such a manner that exposed portions at the tips of the conductors and insulating film faces located in the vicinity thereof are flush with each other or the exposed portions are projected. The gap formed between the electric wires (joint conductors) can be diminished, whereby the reliability of connection is improved and it becomes easier to perform the work of joint conductors, with the result that the productivity of a stator of a rotary electric machine such as an AC generator for a vehicle could be improved.

Joint structure of electric wire, stator of rotary electric machine, method for manufacturing the same

A rotary machine having a stator composed of a stator iron core having a plurality of slots formed in the direction of the rotation axis and stator windings inserted into the plurality of slots, wherein the stator windings are composed of a plurality of conductors respectively inserted into the plurality of slots in the direction of the rotation axis and the stator has a connection ring having slots into which the plurality of conductors are inserted in the direction of the rotation axis.

Rotary machine

The rotor of a vehicle alternator can firmly fasten the permanent magnets between claw-shaped magnetic poles. The rotor includes a Lundell type iron core having claw-shaped magnetic poles which are alternately arranged and opposed each other and include a centered cylindrical field winding, and a permanent magnet disposed between the claw-shaped magnetic poles for increasing the magnetic field. The permanent magnet is held by radial elastic force.

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Hitachiota, Japan

Masahiko Honma