Hitachi, Ltd.

Hitachi Automotive Systems, Ltd.

Hitachi Astemo Ltd.

Other

Hitachi Car Engineering Co., Ltd.

Hisaya Shimizu

Kenichi Nakayama

Tomohiro Fukuda

Tatsuyuki Yamamoto

Shinji Yamazaki

Susumu Tajima

Yuuji Maeda

Keisuke Nishidate

Shin Onose

Seigo Misaki

Takashi Yokoyama

Kenichi Yoshida

Toshiyuki Innami

Keiichi Mashino

Yoshinori Fukasaku

Kazuo Ojima

Takayuki Koizumi

Takashi Genmoto

Yasuyuki Saito

Masaru Ito

Shinichi Fujino

Naoki Nishikawa

Yuji Kano

Akira Toba

Satoru Kaneko

Kazuo Tahara

Takehiko Kowatari

Noriaki Yamamoto

Tokihito Suwa

Houng Joong Kim

Mitsuaki Mirumachi

Kazuto Oyama

Kenta Katsuhama

Keiji Kunii

Hiroshi Matahira

Takahiro Ohmori

Masamichi Kase

Shingo Kitajima

Kousaku Oono

Keisuke Mishidate

Daisuke Sato

Masahiro Hiruta

Yasuhiro Shimada

Dai Nakamura

Takeshi Konno

Mitsue Hashimoto

Yosuke Umesaki

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

This disclosure is directed to a stator of a rotary electric machine. The stator includes a stator coil having a welding portion of segment conductors. Each of the segment conductors includes an exposed conductor wire portion. The exposed conductor includes a root portion adjacent to an insulating coating. A thickness of the insulating coating is 50 μm or more. The predetermined amount of displacement is 1±0.4 times or 2±0.4 times the thickness of the insulating coating. A length of the transition portion is 0.5 times or more and 2 times or less of a thickness of the conductor wire.

Stator of rotary electric machine and rotary electric machine including stator

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

A stator of a rotating electric machine includes a stator and a stator coil. The stator core has a plurality of slots. The stator coil is inserted into the plurality of slots. The stator coil includes two or more conductors. The two or more conductors are arranged such that a gap is generated between adjacent crossing conductors, the gap having a shape of a parallelogram.

Rotating-electrical-machine stator, and rotating electrical machine provided with same

Provided are a rotary-electric-machine stator coil, a rotary-electric-machine stator having the same, and a rotary electric machine having the same, capable of improving a bonding strength and insulation reliability of a conductor bonding portion. A rotary-electric-machine stator coil includes: a conductorhaving a bonding portionbonded to other conductors; and a bonding memberhaving a melting point lower than a melting point of the conductor, wherein a tip of the bonding portion has an alloy layerformed of an alloy of the conductor and the bonding member, and a root of the bonding portion is electrically connected by the bonding member.

Rotary-electric-machine stator coil, rotary-electric-machine stator having the same, and rotary electric machine having the same

A stator in which the height of a coil end of a stator winding can be lowered is provided, and an electric rotating machine including such a stator is provided. In a stator of an electric rotating machine including a stator winding including neutral lines and output lines, the neutral lines are configured to include crawling portion extending circumferentially in the upper portion of a coil at the coil end, and the crawling portion includes an axial stepped portion. The output lines are configured to pass under the axial stepped portion in at least one location of three phases.

Stator and rotating electric machine equipped with same

Provided are a coil having excellent insulation properties, a rotating electrical machine equipped with the same, and a method for manufacturing the same. The coil () has a covered portion where a conductive body () is covered with an insulating film () and a stripped portion where the insulating film is stripped off, and the stripped portion is electrophoretically coated with a resin material (). The coil () may have a configuration wherein segment conductors () each having a covered portion and stripped portion are included, connection parts are formed by the stripped portions of two different segment conductors () being connected at coil ends (), and the thickness of the resin material () is no more than the thickness of the insulating film () at the boundary portion () between the covered portion and the stripped portion.

Stator for rotating electrical machine and rotating electrical machine including the same

Provided are: a rotating-electrical-machine stator in which the height of coil ends of a stator coil is suppressed, while interference between adjacent conductors at the coil ends is avoided; and a rotating electrical machine provided with same. The rotating-electrical-machine stator is provided with: a stator core provided with a plurality of slots; and a stator coil inserted into the slots. The rotating-electrical-machine stator is characterized in that: the stator coil is provided with at least two conductors which are disposed in the same layer as a first conductor, and which are inserted into the slots adjacent to the first conductor; and the shapes of coil protrusions protruding radially outwards are configured so as to form arcs.

Rotating electrical-machine stator, and rotating electrical machine provided with same

Coil, rotating electrical machine equipped with same, and method for manufacturing same

Provided is a stator for a rotating electric machine equipped with a connection terminal having high manufacturability and vibration resistance; also provided is a rotating electric machine equipped with this stator. The stator, which is for a rotating electric machine equipped with a stator coil, is equipped with a connection terminal. The connection terminal has a crimping part to which stator coil input/output coil conductors are connected, and a fastening part which is mechanically connected to an external mechanism, with a melt material arranged on the fastening part. The input/output coil conductors are configured so as to be connected to the connection terminal, with the melt material provided on the crimping part therebetween.

Stator for rotating electric machine, rotating electric machine equipped with same, and manufacturing methods therefor

A new rotor for a rotating electric machine assuring outstanding durability and reliability against vibration and facilitating equalization of resistances among a plurality of rotor coils, while allowing the leading ends of a plurality of lead wires to be disposed so as to congregate in one area, is provided. A plurality of stator coilswound at a cylindrical stator coreeach include leader portions led out from one of two ends of a slot along the axial direction and extending astride a plurality of slots. Lead wireseach formed at one end of a stator coilare disposed so that their leading ends, oriented in the same direction, congregate in a single area. In a leader portion where a lead wireis located, a turnback portion, made to turn back with an angle equal to or greater than 90&#xb0; from an inclining wire portion, which is led out with an inclination along a predetermined direction from the slot, is formed.

Stator for rotating electric machine

A rotating electric machine having downsized coil ends is provided. In a rotating electric machine having a statorincluding a stator coreformed with a plurality of slotsrowed in a circumferential direction and a stator coilinserted into the slots of the stator core, and a rotordisposed rotatably with respect to the stator core with a clearance interposed therebetween. The stator coil is formed by a plurality of segment coilsbeing connected, the segment coilsbeing made of a conductor shaped into a rough U-shape and having a rectangular cross-section. The segment coil has at an end a connection portionconnected to another segment coil, the connection portion having a corner portion

Rotating electric machine including a stator with a connection portion having a corner portion and method for manufacturing same

A power converter which can attain a reliable electric connection with electrodes of a power module by facilitating positioning of conductors connected to the electrodes of the power module. The power converter includes the power module having the plurality of electrodes in the form of plate-shaped conductors within a casing having a lid, and also includes a plurality of plate-shaped conductors connected to the electrodes of the power module. Male screws are embedded in ones of the electrodes of the power module provided at least on the side of the lid to be projected therefrom, the plate-shaped conductors connected to the electrodes having the male screws are formed therein with holes at locations corresponding to the male screws, the male screws being inserted in the corresponding holes, and electrically connected with the electrodes with nuts fastened to the male screws.

Power converter

An electric four-wheel drive vehicle and a control unit for the same, which can be applied to cars of class having larger displacements than the class to which the electric four-wheel drive vehicle equipped with the DC motor is applied, without increasing the cost over that of the known mechanical four-wheel drive vehicle. Front wheels of the vehicle are driven by an engine, and rear wheels are driven by an AC motor. A generator is driven by a rotating force of the engine to output DC power. An inverter converts the DC power outputted from the generator to AC power. A control unit controls the generator such that energy Pm required for driving the AC motor is outputted from the generator.

Electric four-wheel drive vehicle and control unit for same

Growing community of inventors

Hitachinaka, Japan

Hisaya Shimizu