公开(公告)号：US20150001979A1

公开(公告)日：2015-01-01

申请号：US14314214

申请日：2014-06-25

Applicant: Hitachi, Ltd.

Inventor： Kenta DEGUCHI ,  Hirooki TOKOI ,  Yuji ENOMOTO

IPC: H02K1/18 ,  H02K1/27

CPC classification number: H02K1/182 ,  H02K1/14 ,  H02K21/24

Abstract: An axial gap rotating electric machine includes a pair of rotors fixed to a rotating shaft, a stator, a holding member holding the stator, and a housing. The stator includes cores arranged in a circumferential direction of the rotating shaft, and coils wound around the cores. The holding member and the housing are conductive. The holding member includes an outer peripheral portion firmly fixed on an inner wall of the housing, and a protruding portion protruding from the outer peripheral portion toward the rotating shaft. The protruding portion includes a plurality of protruding portions in the circumferential direction of the rotating shaft. The core is held by a pair of the protruding portions adjacent in the circumferential direction of the rotating shaft, and a gap to interrupt a path of eddy currents between distal ends of the pair of the protruding portions is provided between the distal ends.

Abstract translation: 轴向间隙旋转电机包括固定到旋转轴的一对转子，定子，保持定子的保持构件和壳体。 定子包括沿旋转轴的圆周方向布置的芯和缠绕在芯上的线圈。 保持构件和壳体是导电的。 保持构件包括牢固地固定在壳体的内壁上的外周部分和从外周部向旋转轴突出的突出部分。 突出部包括在旋转轴的圆周方向上的多个突出部。 芯部由在旋转轴的周向上相邻的一对突出部保持，并且在远端之间设置有用于中断一对突出部的前端之间的涡流的路径的间隙。

公开(公告)号：US20150349588A1

公开(公告)日：2015-12-03

申请号：US14654713

申请日：2014-01-24

Applicant: HITACHI, LTD.

Inventor： Hirooki TOKOI ,  Yuji ENOMOTO ,  Kenta DEGUCHI ,  Taizo MIYAZAKI ,  Koji OBATA

IPC: H02K1/12 ,  H02K5/04 ,  H02K3/34

CPC classification number: H02K1/12 ,  H02K3/34 ,  H02K3/522 ,  H02K5/04 ,  H02K11/40 ,  H02K2201/03 ,  H02K2203/12

Abstract: Provided is a bearing electrolytic corrosion countermeasure technology achieving excellent reliability without increasing the number of components. A rotating electrical machine of the invention includes: a stator; a shaft penetrating the stator; a rotor facing the stator via a gap in an axial direction; and a housing holding the stator, in which: the stator includes, in a circumferential direction, a plurality of stator units each of which includes a grounded first conductive member, a core, a bobbin, and a winding wound around the bobbin; the bobbin has a flange portion provided between the winding and the rotor; the first conductive member is provided between the flange portion and the rotor and is in contact with the core, and, in a case where projection is performed in the axial direction, the winding is provided such that a projected portion of a part of the winding wound around the bobbin is within a projected portion of the flange portion; and the first conductive member is provided such that the projected portion of the first conductive member is included in the projected portion of the flange portion.

Abstract translation: 提供轴承电解腐蚀对策技术，在不增加部件数量的情况下实现优异的可靠性。 本发明的旋转电机包括：定子; 穿过定子的轴; 通过轴向的间隙面对所述定子的转子; 以及保持定子的壳体，其中：所述定子在圆周方向上包括多个定子单元，每个定子单元包括接地的第一导电构件，芯，线圈架和缠绕在所述线轴上的绕组; 线轴具有设置在绕组和转子之间的凸缘部分; 第一导电部件设置在凸缘部和转子之间并与芯接触，并且在沿轴向进行突起的情况下，设置绕组，使得绕组的一部分的突出部分 缠绕在线轴上的凸缘部分的突出部分内; 并且第一导电构件设置成使得第一导电构件的突出部分包括在凸缘部分的突出部分中。

公开(公告)号：US20140009009A1

公开(公告)日：2014-01-09

申请号：US13935073

申请日：2013-07-03

Applicant: Hitachi, Ltd.

Inventor： Kenta DEGUCHI ,  Hirooki TOKOI ,  Zhuonan WANG ,  Norihisa IWASAKI ,  Yuji ENOMOTO

IPC: H02K11/00

CPC classification number: H02K11/0089 ,  H02K1/182 ,  H02K5/08 ,  H02K9/22 ,  H02K11/40 ,  H02K21/24

Abstract: An axial gap rotating-electric machine includes a stator, a rotor arranged via an air gap in the direction of an axis of rotation of a rotating-electric machine with respect to the stator, and a housing configured to accommodate the stator and the rotor, and the stator includes a plurality of stator cores arranged in the circumferential direction, coils configured to wind the peripheries of the respective stator cores, and a resin for molding the plurality of stator cores wound with the coils, and the stator cores each include a protruding portion protruding partly from the coil in the direction of axis of rotation, and a conductive member is provided so as to come into contact with peripheral surfaces of the protruding portions of the stator cores, and grounding is achieved by the conductive member.

Abstract translation: 轴向间隙旋转电机包括：定子，经由旋转电机相对于定子的旋转轴线的气隙经由气隙配置的转子以及容纳定子和转子的壳体， 定子包括沿圆周方向排列的多个定子铁芯，构成为卷绕各个定子铁心的周缘的线圈，以及用于成型由线圈缠绕的多个定子铁心的树脂，并且定子铁心各自包括突出部 部分地从线圈沿旋转轴线方向突出的部分，并且设置导电构件以与定子芯的突出部分的外周表面接触，并且通过导电构件实现接地。

公开(公告)号：US20200006998A1

公开(公告)日：2020-01-02

申请号：US16488282

申请日：2017-11-01

Applicant: Hitachi, Ltd.

Inventor： Yuji ENOMOTO ,  Hirooki TOKOI ,  Kenta DEGUCHI

IPC: H02K5/08 ,  H02K5/02 ,  H02K21/24

Abstract: The purpose of the present invention is to obtain a structure with which it is possible to improve the heat dissipation performance and efficiency of an axial gap dynamo-electric machine. Accordingly, the present invention is an axial gap dynamo-electric machine of such construction that a disc-shaped rotor in which permanent magnets are disposed is provided in the axial direction and a stator is disposed in the axial-direction center portion, wherein the outer circumferential side of a stator winding is in intimate contact with the inside diameter of a housing, embedding with a mold resin is used for the housing and a stator core and for a stator coil and the housing so that a connection is established with the housing, and the housing comprises a non-magnetic, electrically nonconductive material.

公开(公告)号：US20190058374A1

公开(公告)日：2019-02-21

申请号：US16078298

申请日：2016-02-25

Applicant: Hitachi, Ltd.

Inventor： Yuji ENOMOTO ,  Hirooki TOKOI ,  Naoki SAKURAI ,  Hisashi TANIE ,  Kenta DEGUCHI

IPC: H02K9/20 ,  H02K7/14 ,  H02K11/33 ,  H02K11/40 ,  H02K16/02 ,  H02K21/24 ,  F28D15/02 ,  F04D3/00 ,  F04D13/06

CPC classification number: H02K9/20 ,  F04D3/00 ,  F04D13/0606 ,  F04D13/0666 ,  F04D29/5806 ,  F28D15/02 ,  F28D15/0233 ,  F28D15/04 ,  F28D2021/0028 ,  F28D2021/004 ,  H02K1/146 ,  H02K5/18 ,  H02K7/14 ,  H02K9/04 ,  H02K9/14 ,  H02K11/33 ,  H02K11/40 ,  H02K16/02 ,  H02K21/24 ,  H02K2211/03

Abstract: To significantly improve a heat dissipation property of an axial gap rotary electric machine within a size necessary for configuring a motor. In an axial gap rotary electric machine comprising a stator and a rotor in an axial direction, the stator has a plurality of stator cores arranged in a circumferential direction and coils wound around the stator cores, and a heat pipe obtained by filling an inside of a metal hollow pipe with a refrigerant is arranged in a gap between adjacent coils formed in an outer diameter portion of the stator in a radial direction and a housing with a necessary insulation distance between the coils and the heat pipe. The heat pipe extends in a direction of a rotation axis and an opposite output side, and is in contact with a heat dissipating fin outside an end bracket on the opposite output side.

公开(公告)号：US20150349591A1

公开(公告)日：2015-12-03

申请号：US14649786

申请日：2013-11-18

Applicant: Hitachi, Ltd.

Inventor： Kenta DEGUCHI ,  Yuji ENOMOTO ,  Hirooki TOKOI

IPC: H02K1/18 ,  H02K15/02 ,  H02K21/24

CPC classification number: H02K1/182 ,  H02K1/14 ,  H02K11/40 ,  H02K15/022 ,  H02K16/02 ,  H02K21/24 ,  H02K2213/03 ,  Y10T29/49011

Abstract: There is provided an axial gap polyphase motor whereby losses caused by eddy currents generated in a stator core can be eliminated, while the stator core can be prevented from shifting out of position. The stator for use in the axial gap polyphase motor is provided with a layered stator core 1A having a plurality of core portions 2 arranged at equal spacing in the circumferential direction and protruding in the axial direction, and a plurality of supporting portions connecting and supporting the adjacent core portions 2, coils wound onto the core portions 2, and fastening members 4 made of conductive material. Only the core portions 2 onto which are wound the coils for flow of electric current of a single phase from among the multiple phases have first apertures 2H in the radial direction. The fastening members 4 are inserted into the first apertures 2H.

Abstract translation: 提供了一种轴向间隙多相电动机，由此可以消除由定子铁芯中产生的涡流引起的损耗，同时可以防止定子铁心偏离位置。 在轴向间隙多相电动机中使用的定子具有层叠的定子铁芯1A，该定子铁芯具有沿圆周方向等间隔设置并沿轴向突出的多个铁心部分2，以及多个支撑部分， 相邻的芯部2，缠绕在芯部2上的线圈和由导电材料制成的紧固构件4。 在多相中仅单个卷绕有单相电流的线圈的芯部2在径向具有第一孔2H。 紧固构件4插入第一孔2H。

公开(公告)号：US20190058375A1

公开(公告)日：2019-02-21

申请号：US16078304

申请日：2016-02-24

Applicant: Hitachi, Ltd.

Inventor： Hirooki TOKOI ,  Yuji ENOMOTO

IPC: H02K11/02 ,  H02K3/34 ,  H02K3/38 ,  H02K3/50 ,  H02K11/33 ,  H02K11/40 ,  H02K16/02 ,  H02K21/24

CPC classification number: H02K11/02 ,  H02K1/146 ,  H02K3/28 ,  H02K3/345 ,  H02K3/38 ,  H02K3/50 ,  H02K3/522 ,  H02K5/225 ,  H02K7/14 ,  H02K11/33 ,  H02K11/40 ,  H02K16/02 ,  H02K21/24 ,  H02K2203/03 ,  H02K2203/06 ,  H02K2203/09 ,  H02K2203/12 ,  H02K2213/03

Abstract: To reduce an axial voltage while securing a high output, high efficiency, and assemblability of an axial gap rotary electric machine. An axial gap rotary electric machine includes: a stator, formed by arranging a plurality of core members circularly about a shaft in a direction in which magnetic lines are parallel with the shaft, the core member having at least an iron core and a coil wound around an outer circumference of the iron core; at least one rotor facing the stator with a predetermined air gap interposed therebetween in a shaft axial direction; and a housing having an inner circumferential surface opposing the stator and the rotor in a radial direction. The axial gap rotary electric machine further includes a wiring board that has: a bus portion continuous in the circumferential direction; a coil connection portion protruding from the bus portion and connected to the coil; and an external connection portion protruding from the bus portion. The wiring board is arranged at an outer circumferential side of the plurality of circularly-arranged iron cores.

公开(公告)号：US20180358863A1

公开(公告)日：2018-12-13

申请号：US15779296

申请日：2016-11-04

Applicant: HITACHI, LTD.

Inventor： Hisashi TANIE ,  Yoshitaka IWAJI ,  Yuji ENOMOTO ,  Hirooki TOKOI ,  Takayoshi NAKAMURA ,  Naoki SAKURAI ,  Fusao HOUJYOU ,  Kohei MATSUSHITA

IPC: H02K5/24 ,  H02K5/18 ,  H02K11/25 ,  H02K11/33 ,  H02K11/38

Abstract: An object of the present invention is to provide a highly reliable electromechanical integral motor.In an electromechanical integral motor including an axial gap type motor and a power conversion control device, the power conversion control device is mounted on an end bracket portion of the motor, a space is installed between the end bracket portion of the motor and the power conversion control device, the end bracket portion of the motor and the power conversion control device are fixed by a plurality of fixing members, and at least one set of the plurality of fixing members is disposed to be spaced apart from each other.

公开(公告)号：US20150380992A1

公开(公告)日：2015-12-31

申请号：US14655452

申请日：2013-01-23

Applicant: HITACHI, LTD.

Inventor： Yuji ENOMOTO ,  Hirooki TOKOI ,  Kenta DEGUCHI

IPC: H02K1/18

CPC classification number: H02K1/182 ,  H02K3/46 ,  H02K5/08 ,  H02K11/40 ,  H02K15/12

Abstract: The grounding of a stator core with an inexpensive structure and high reliability is to be realized in an axial gap-type electric rotating machine in which a stator is held by resin molding. An axial gap-type electric rotating machine according to the invention includes: a stator having a stator core; a shaft penetrating the stator; a rotor arranged with a space from the stator with respect to the direction of the shaft; a housing which accommodates the stator; a first connection member which connects the stator core and the housing; and a resin material which fixes the stator to an inner wall of the housing. The first connection member is provided with a first connection portion which connects to the stator core, a second connection portion which connects to the inner wall of the housing, and a plastic deformation portion between the first connection portion and the second connection portion.

Abstract translation: 具有廉价结构和高可靠性的定子铁芯的接地在通过树脂模塑保持定子的轴向间隙式旋转电机中实现。 根据本发明的轴向间隙型旋转电机包括：具有定子芯的定子; 穿过定子的轴; 转子，其相对于轴的方向从定子排列成空间; 容纳定子的壳体; 连接定子铁心和壳体的第一连接构件; 以及将定子固定到壳体的内壁的树脂材料。 第一连接构件设置有连接到定子芯的第一连接部分，连接到壳体的内壁的第二连接部分和在第一连接部分和第二连接部分之间的塑性变形部分。

公开(公告)号：US20140042842A1

公开(公告)日：2014-02-13

申请号：US13951124

申请日：2013-07-25

Applicant: Hitachi, Ltd.

Inventor： Hirooki TOKOI ,  Yuji ENOMOTO ,  Shigeki TOUNOSU

IPC: H02K9/08

CPC classification number: H02K9/08 ,  H02K9/06 ,  H02K21/24

Abstract: A channel connecting a first opening formed on one side surface of a rotor and a second opening formed on the other side surface of the rotor is provided, and a first distance from a rotating shaft to the center of the first opening and a second distance from the rotating shaft to the center of the second opening are differentiated. A differential pressure is generated between the first opening and the second opening provided in the rotor by the differentiating the distances from the center of the rotating shaft to the first opening and the second opening, a flow of air is generated by the differential pressure from one surface or the other surface of the rotor to the other surface or the one surface, whereby the stator in proximity to the rotor may be cooled.

Abstract translation: 连接形成在转子的一个侧表面上的第一开口和形成在转子的另一侧表面上的第二开口的通道设置有从旋转轴到第一开口的中心的第一距离， 到第二开口的中心的旋转轴是不同的。 通过区分从旋转轴的中心到第一开口和第二开口的距离，在设置在转子中的第一开口和第二开口之间产生压差，通过来自一个的压差产生空气流 表面或转子的另一个表面到另一个表面或一个表面，从而可以冷却接近转子的定子。