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公开(公告)号：US20220140685A1
公开(公告)日：2022-05-05
申请号：US17577938
申请日：2022-01-18
Applicant: DENSO CORPORATION
Inventor： Yuuki MAWATARI , Akito TAMURA
Abstract: An armature winding of multiple phases has a phase winding that is made of a plurality of partial windings for each phase. The partial winding includes a pair of intermediate conductor portions and crossover portions that connect the pair of intermediate conductor portions in an annular shape, and is configured by a conductor material being wound in multiple layers in the pair of intermediate conductor portions and the crossover portions. The intermediate conductor portions of the phases are arrayed in a predetermined order in the circumferential direction by one of the intermediate conductor portions of the pair of intermediate conductor portions of the partial winding of another phase being arranged between the pair of intermediate conductor portions of the partial winding. A sheet-shaped insulation covering body is provided in the intermediate conductor portion in a portion that opposes the intermediate conductor portion of the partial winding of another phase.
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公开(公告)号：US20190207453A1
公开(公告)日：2019-07-04
申请号：US16299567
申请日：2019-03-12
Applicant: DENSO CORPORATION
Inventor： Akito TAMURA
Abstract: A stator includes a stator core having slots, a stator coil comprised of three phase windings, phase busbars each electrically connecting a corresponding one of the phase windings to an inverter, and a neutral busbar star-connecting the phase windings to define a neutral point therebetween. In each of the slots of the stator core, there are arranged K in-slot portions of the phase windings of the stator coil in K layers so as to be radially aligned with each other, where K is an even number. The phase and neutral busbars are electrically connected with those in-slot portions of the phase windings of the stator coil which are arranged at the radially outermost layer or the radially innermost layer in the respective slots of the stator core so as to be circumferentially spaced from one another by M slot-pitches or more, where M is a slot multiplier number.
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公开(公告)号：US20210328474A1
公开(公告)日：2021-10-21
申请号：US17235337
申请日：2021-04-20
Applicant: DENSO CORPORATION
Inventor： Hiroshi ENDO , Akito TAMURA
Abstract: 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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公开(公告)号：US20190156978A1
公开(公告)日：2019-05-23
申请号：US16260906
申请日：2019-01-29
Applicant: DENSO CORPORATION , UNIMAC LTD.
Inventor： Akito TAMURA , Yuki AMANO , Kazuomi HIRAI , Masatoshi NARITA , Tatsumi HIRANO , Yasunari ASHIDA , Suguru IGARASHI
Abstract: An insulated electrical wire of an embodiment includes a conductor having a first and a second lateral face which are opposed to each other; and a first and a second insulating film which are arranged on the first and second lateral faces, respectively, and each of which has a pair of convex portions and an intermediate portion arranged between the pair of convex portions. A ratio of a thickness of the intermediate portion relative to a thickness of the pair of convex portions of each of the first and second insulating films is from 0.50 to 0.90.
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公开(公告)号：US20170244295A1
公开(公告)日：2017-08-24
申请号：US15590071
申请日：2017-05-09
Applicant: DENSO CORPORATION
Inventor： Akito TAMURA
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US20160248289A1
公开(公告)日：2016-08-25
申请号：US15048118
申请日：2016-02-19
Applicant: DENSO CORPORATION
Inventor： Akito TAMURA
Abstract: 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.
Abstract translation: 在旋转电机中，定子包括具有形成在其中的槽的定子铁心和由相绕组构成的定子线圈，每个相绕组包括槽内部分和转弯部分。 相绕组的转弯部分构成定子线圈的线圈端部。 此外，提供冷却机构以将液体冷却剂降低到线圈端部上。 此外，相绕组的转弯部分包括长节距转弯部分和短倾斜部分。 在线圈端部中，在定子线圈的整个周向范围上存在长间距和短节距匝部分的轴向重叠对。 对于每个轴向重叠的一些长节距和短节距匝部分，短节距匝部分位于长匝部分的轴向内部，并且通过形成在其间的空隙空间与长匝部分面对 长节距和短节距转弯部分的长度。
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公开(公告)号：US20220140715A1
公开(公告)日：2022-05-05
申请号：US17578243
申请日：2022-01-18
Applicant: DENSO CORPORATION
Inventor： Yuuki MAWATARI , Akito TAMURA
Abstract: A rotating electric machine includes an armature coil having a plurality of phase windings for respective phases. Each of the phase windings is constituted of a plurality of partial windings each having a pair of intermediate conductor portions and a pair of bridging portions connecting the pair of intermediate conductor portions. All the intermediate conductor portions of the partial windings are arranged in a predetermined sequence in a circumferential direction. At each of coil ends of the armature coil, the bridging portions of the partial windings of different phases intersect one another. Each of the partial windings has a mounting member provided integrally therewith for mounting it to a support member. For each circumferentially-adjacent pair of the partial windings whose bridging portions intersect one another, the mounting members provided respectively integrally with the pair of the partial windings are together fixed to the support member by a common fixing member.
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公开(公告)号：US20220109358A1
公开(公告)日：2022-04-07
申请号：US17551137
申请日：2021-12-14
Applicant: DENSO CORPORATION
Inventor： Akito TAMURA , Hiroshi ENDOU
Abstract: An armature includes a multiphase stator winding assembly that includes multiphase stator windings. Each of the multiphase stator windings includes a plurality of winding segments. Each of the winding segments includes a conductor. The conductor of each of the winding segments of each of the multi-phase windings is wound along an armature core while being engaged with a corresponding at least one of first protrusions and a corresponding at least one of second protrusions, and extending along one of radially inner and outer peripheral surfaces of the armature core. The first protrusions extend axially from a first end plate of the armature core, and the second protrusions extend axially from a second end plate of the armature core.
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公开(公告)号：US20210384786A1
公开(公告)日：2021-12-09
申请号：US17410190
申请日：2021-08-24
Applicant: DENSO CORPORATION
Inventor： Akito TAMURA
IPC: H02K3/28
Abstract: An armature includes an armature winding of multiple phases having phase windings, for each phase, that includes a plurality of partial windings, and a base member that includes a circular cylindrical back yoke. The partial winding includes a pair of intermediate conductor portions and crossover portions that connect the intermediate conductor portions in an annular shape. A conductor is wound in multiple layers in the intermediate conductor portions and the crossover portions. An interference prevention portion extends in a radial direction. The intermediate conductor portions are arrayed in a predetermined order in the circumferential direction, by one of the intermediate conductor portions of a first phase being arranged between the intermediate conductor portions of the partial winding of a second phase. The partial windings are assembled to the back yoke in a state in which an insulation layer is interposed between the intermediate conductor portion and the back yoke.
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公开(公告)号：US20210384782A1
公开(公告)日：2021-12-09
申请号：US17411304
申请日：2021-08-25
Applicant: DENSO CORPORATION
Inventor： Hiroyuki TSUCHIYA , Shinji KODA , Yuki TAKAHASHI , Kazuya IWASE , Akito TAMURA
Abstract: The rotating electric machine includes a stator having a stator winding and a rotor facing the stator in a radial direction. The rotor includes a carrier having a disk-shaped end plate section fixed to a rotating shaft and arranged coaxially with the rotating shaft, and an annular magnet unit arranged coaxially with the rotating shaft. The magnet has a cylindrical magnet holder whose one end in an axial direction is fixed to the end plate section, and a magnet fixed to a peripheral surface on a stator side in the radial direction in the magnet holder and having an alternating polarity in a circumferential direction. The magnet holder is made of a non-magnetic material. In the magnet, an orientation of an axis of easy magnetization on a q-axis is deviated from an orientation parallel to the q-axis.
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