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1. 发明授权

US09479021B2 Stator of rotary electric machine with reduced current density neutral wires 有权
标题翻译：具有降低电流密度中性线的旋转电机定子
公开(公告)号：US09479021B2
公开(公告)日：2016-10-25
申请号：US14165806
申请日：2014-01-28
申请人： DENSO CORPORATION
发明人： Akito Tamura
IPC分类号： H02K3/00 , H02K3/04 , H02K17/00 , H02K3/28 , H02K3/12
CPC分类号： H02K3/28 , H02K3/12
摘要： A stator of a rotary electric machine includes an annular stator core with a plurality of slots arranged in a circumferential direction, a stator winding formed by three phases of phase windings wound around the slots, and neutral wires for commonly connecting ends of the phase windings together in star-connection. Each of the phase windings has two partial windings that are electrically connected in parallel, ends of at least two sets of the partial windings formed by combining two partial windings among the total of six partial windings in different phases and the ends of the neutral wires are connected electrically, and the partial windings connected to both ends of each neutral wire include all the phases.
摘要翻译：旋转电机的定子包括具有沿圆周方向布置的多个槽的环形定子铁芯，由缠绕在槽周围的三相相绕组形成的定子绕组和用于将相绕组的一端共同连接的中性线在星形连接。每个相绕组具有并联电连接的两个部分绕组，至少两组部分绕组的端部通过组合在不同相中的六个部分绕组中的两个部分绕组而形成，并且中性线的端部为连接到每个中性线的两端的部分绕组包括所有相。

2. 发明授权

US09893583B2 Stator for rotating electric machine 有权
公开(公告)号：US09893583B2
公开(公告)日：2018-02-13
申请号：US15590071
申请日：2017-05-09
申请人： DENSO CORPORATION
发明人： Akito Tamura
IPC分类号： H02K3/04 , H02K3/34 , H02K3/30
CPC分类号： H02K3/34 , H02K3/30
摘要： A stator for a rotating electric machine, including an annular stator core having a plurality of slots circumferentially arranged in the stator core, and a stator winding wound around the stator core and comprised of a plurality of U-shaped conductor segments inserted in the slots and connected to each other. Each conductor segment includes a conductor and a bilayer insulative coating comprised of an insulating layer covering a peripheral surface of the conductor and a protective layer covering a peripheral surface of the insulating layer. The protective layer is formed of a material having a Young's modulus that is equal to or greater than a Young's modulus of the insulating layer at room temperature and less than the Young's modulus of the insulating layer in high temperature environments caused by heat generation of the stator winding.

3. 发明授权

US10418881B2 Rotary electric machine for vehicle 有权
公开(公告)号：US10418881B2
公开(公告)日：2019-09-17
申请号：US14020753
申请日：2013-09-06
申请人： DENSO CORPORATION
发明人： Akito Tamura
IPC分类号： H02K9/00 , H02K3/24 , H02K9/19
摘要： A rotary electric machine includes a rotor, a stator disposed facing the rotor in a radial direction having a stator core with a plurality of slots aligned in a circumferential direction and a stator winding wound around the slots of the stator core, and a cooling mechanism for cooling first and second coil-end groups of the stator winding by dropping a liquid coolant from an outer peripheral side thereof. The stator is disposed along an inner circumferential surface of at least one of the first and the second coil-end groups of the stator winding, and there is provided a shielding member for preventing the liquid coolant from falling into the inner circumferential side of the first and the second coil-end groups. Thus, it is possible to cool throughout the first and the second coil-end groups efficiently and reliably by the liquid coolant, a sufficient cooling effect can be obtained.

4. 发明授权

US09887596B2 Rotating electric machine 有权
公开(公告)号：US09887596B2
公开(公告)日：2018-02-06
申请号：US15048118
申请日：2016-02-19
申请人： DENSO CORPORATION
发明人： Akito Tamura
IPC分类号： H02K9/00 , H02K3/24 , H02K3/12 , H02K9/19
CPC分类号： H02K3/24 , H02K3/12 , H02K9/19
摘要： In a rotating electric machine, a stator includes a stator core having slots formed therein and a stator coil comprised of phase windings each of which includes in-slot portions and turn portions. The turn portions of the phase windings together constitute a coil end part of the stator coil. Further, a cooling mechanism is provided to drop liquid coolant onto the coil end part. Moreover, the turn portions of the phase windings include long-pitch turn portions and short-pitch turn portions. In the coil end part, there are axially-overlapping pairs of the long-pitch and short-pitch turn portions over an entire circumferential range of the stator coil. For each axially-overlapping pair of the long-pitch and short-pitch turn portions, the short-pitch turn portion is located axially inside the long-pitch turn portion and faces the long-pitch turn portion through a void space formed therebetween over entire lengths of the long-pitch and short-pitch turn portions.

5. 发明授权

US09866083B2 Stator for rotating electric machine 有权
公开(公告)号：US09866083B2
公开(公告)日：2018-01-09
申请号：US14751924
申请日：2015-06-26
申请人： DENSO CORPORATION
发明人： Akito Tamura
IPC分类号： H02K3/28 , H02K3/12
CPC分类号： H02K3/28 , H02K3/12
摘要： A stator includes an annular stator core and a stator coil. The stator core has U-phase slots, V-phase slots and W-phase slots sequentially and repeatedly provided in pairs in its circumferential direction. The stator coil has U-phase, V-phase and W-phase windings respectively received in the U-phase, V-phase and W-phase slots. In each of the slots, there are received 2×N in-slot portions of a corresponding one of the phase windings in radial alignment with each other, where N≧2. Each of the phase windings consists of a pair of sub-windings connected parallel to each other. Each of the sub-windings includes winding sections that are classified into N winding section groups. Each of the winding sections of (N−1) winding section groups is connected via only serial connection, and each of the winding sections of the remaining one winding section group is connected via both serial connection and parallel connection.

6. 发明授权

US10432053B2 Stator for rotating electrical machine 有权
公开(公告)号：US10432053B2
公开(公告)日：2019-10-01
申请号：US14163412
申请日：2014-01-24
申请人： DENSO CORPORATION
发明人： Akito Tamura
IPC分类号： H02K3/34 , H02K3/32
摘要： A stator includes an annular stator core, a stator winding, and an insulating sheet member. In the stator core, slots are circumferentially arrayed. The stator winding includes conductor segments having oblique portions formed by open end portions being circumferentially twisted. The open end portions are inserted into the slots from one of two axial-direction sides and extend towards another one. The insulating sheet member is interposed between an inner wall surface of the slot and the conductor segment. The insulating sheet member is rolled into a cylindrical shape along the inner wall surface of the slot, and includes an overlapping portion and a slack portion. In the overlapping portion, two circumferential-direction end portions overlap each other. The overlapping portion is disposed on one of two radial-direction sides of each of the slots. The slack portion is disposed on another one of two radial-direction sides of each of the slots.

7. 发明授权

US10050484B2 Stator for rotating electric machine 有权
公开(公告)号：US10050484B2
公开(公告)日：2018-08-14
申请号：US15048220
申请日：2016-02-19
申请人： DENSO CORPORATION
发明人： Akito Tamura
IPC分类号： H02K3/12 , H02K3/38 , H02K3/28
摘要： A stator includes a stator core having slots arranged in a circumferential direction thereof at a predetermined pitch and a stator coil comprised of phase windings. Each of the phase windings is configured with an electric conductor and an insulating coat covering the electric conductor. Each of the phase windings includes in-slot portions and turn portions connecting the in-slot portions. The turn portions of the phase windings include a plurality of types of turn portions having different circumferential lengths. For each of the phase windings, apex parts of the turn portions of the phase winding are arranged in pairs over the entire circumferential range of the stator coil. The apex parts of each of the pairs axially overlap each other. Each circumferentially-adjacent pair of the apex parts of the turn portions of all the phase windings are circumferentially offset from each other by a distance greater than the predetermined pitch.

8. 发明授权

US10044236B2 Stator for rotating electric machine 有权
公开(公告)号：US10044236B2
公开(公告)日：2018-08-07
申请号：US15225242
申请日：2016-08-01
申请人： DENSO CORPORATION
发明人： Akito Tamura
IPC分类号： H02K1/16 , H02K3/12 , H02K3/28 , H02K3/30
摘要： A stator includes a stator core having slots and a stator coil comprised of three star-connected phase windings. In each of the slots, there are arranged in-slot portions of the phase windings in six layers. Each of the phase windings is comprised of five parallel-connected sub-windings. At each of the six layers, the in-slot portions of the sub-windings are arranged in a plurality of slot pairs; the slot pairs are circumferentially spaced from one another and each consist of two consecutive slots that are respectively identified as types A and B of the slots. Moreover, for each of the sub-windings, the in-slot portions of the sub-winding are evenly distributed to the two types A and B so that the number of the in-slot portions of the sub-winding arranged in the slots of the same type at each of the six layers is equal to 2.

9. 发明授权

US09680345B2 Stator for rotating electric machine 有权
公开(公告)号：US09680345B2
公开(公告)日：2017-06-13
申请号：US14615515
申请日：2015-02-06
申请人： DENSO CORPORATION
发明人： Akito Tamura
IPC分类号： H02K3/04 , H02K3/34 , H02K3/30
CPC分类号： H02K3/34 , H02K3/30
摘要： A stator for a rotating electric machine, including an annular stator core having a plurality of slots circumferentially arranged in the stator core, and a stator winding wound around the stator core and comprised of a plurality of U-shaped conductor segments inserted in the slots and connected to each other. Each conductor segment includes a conductor and a bilayer insulative coating comprised of an insulating layer covering a peripheral surface of the conductor and a protective layer covering a peripheral surface of the insulating layer. The protective layer is formed of a material having a Young's modulus that is equal to or greater than a Young's modulus of the insulating layer at room temperature and less than the Young's modulus of the insulating layer in high temperature environments caused by heat generation of the stator winding.

10. 发明授权

US11594930B2 Rotating electric machine 有权
公开(公告)号：US11594930B2
公开(公告)日：2023-02-28
申请号：US17235337
申请日：2021-04-20
申请人： DENSO CORPORATION
发明人： Hiroshi Endo , Akito Tamura
IPC分类号： H02K3/28 , H02K21/14
摘要： A rotating electric machine includes a multi-phase armature coil wound on an armature core. The armature coil is formed of electrical conductor groups each being a bundle of electrical conductor segments and having a pair of leg portions and a connecting portion that connects the leg portions. The connecting portion is bent radially with respect to a circumferential direction. The electrical conductor groups are paired such that each pair of the electrical conductor groups consists of a first electrical conductor group and a second electrical conductor group both belonging to a same phase of the armature coil. The circumferential pitch between the leg portions of the first electrical conductor group is greater than that between the leg portions of the second electrical conductor group. In each pair of the electrical conductor groups, the connecting portions of the first and second electrical conductor groups are arranged to axially overlap each other.

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