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公开(公告)号：US20190334397A1
公开(公告)日：2019-10-31
申请号：US16507481
申请日：2019-07-10
Applicant: DENSO CORPORATION
Inventor： Takefumi KAJI , Atsuo ISHIZUKA
Abstract: A stator for a rotating electric machine has a stator core provided with a plurality of slots arranged in a circumferential direction of the stator core, and a stator winding that is wound around the slots.The stator winding is configured of a plurality of covered conductor linear portions. The covered conductor linear portions are each provided with an exposed portion formed on an end. The plurality of covered conductor linear portions are each joined to another covered conductor linear portion at the exposed portion, and the conductor joined portion is covered by an insulator at least in a range that includes an end portion of the insulation cover. The insulation cover covers the conductor, in an adhered state there to, and has a low-adhesion portion that that is either adhesive-free or has a lower adhesive strength than other parts on the conductor and is distanced from an end portion.
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公开(公告)号：US20180287445A1
公开(公告)日：2018-10-04
申请号：US15525141
申请日：2015-11-06
Applicant: DENSO CORPORATION
Inventor： Atsuo ISHIZUKA , Akito AKIMOTO , Masayuki TAKIGUCHI
Abstract: A stator includes a stator core having a plurality of slots arranged in a circumferential direction and a stator coil formed by wave-winding continuous coil wires on the stator core. Each of the continuous coil wires has in-slot portions received in the slots and turn portions each of which connects, on the outside of the slots, one pair of the in-slot portions. Each of the continuous coil wires has, at root parts of the turn portions respectively connected with ends of the in-slot portions, first crank portions that are radially bent. An amount of radial bending of the first crank portions is set to be half of a radial width of the in-slot portions.
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公开(公告)号：US20140346905A1
公开(公告)日：2014-11-27
申请号：US14284589
申请日：2014-05-22
Applicant: DENSO CORPORATION
Inventor： Hirohito MATSUI , Koji ASAGARA , Atsuo ISHIZUKA
IPC: H02K9/19
Abstract: A rotating electric machine includes a rotor, a stator, a cooling device and a pair of cooling liquid collection tanks. The stator includes an annular stator core and a stator coil. The stator core is disposed radially outside the rotor so as to surround the rotor. The stator coil is mounted on the stator core so that a pair of coil ends of the stator coil protrude axially outward respectively from opposite axial end faces of the stator core. The cooling device is configured to supply cooling liquid to vertically upper parts of the coil ends of the stator coil. Each of the cooling liquid collection tanks is arranged to surround a vertically lower part of a corresponding one of the coil ends so as to collect and temporarily reserve therein the cooling liquid moved from the upper part to the lower part of the corresponding coil end.
Abstract translation: 旋转电机包括转子，定子，冷却装置和一对冷却液收集罐。 定子包括环形定子芯和定子线圈。 定子芯径向设置在转子周围，以包围转子。 定子线圈安装在定子铁芯上，使得定子线圈的一对线圈端分别从定子铁心的相对的轴向端面轴向向外突出。 该冷却装置构成为向定子线圈的线圈端部的垂直上方供给冷却液。 每个冷却液收集箱被布置成围绕相应的一个线圈端的垂直下部，以便收集并临时储存从相应的线圈端的上部移动到下部的冷却液。
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公开(公告)号：US20140035406A1
公开(公告)日：2014-02-06
申请号：US13949790
申请日：2013-07-24
Applicant: DENSO CORPORATION
Inventor： Atsuo ISHIZUKA , Tetsuya GOROHATA
CPC classification number: H02K3/38 , H02K3/12 , H02K15/024 , Y10T29/49009
Abstract: A stator includes a hollow cylindrical stator core and a stator coil formed of a plurality of electric conductor segments. Each of the electric conductor segments includes, at least, an in-slot portion received in a corresponding slot of the stator core and a protruding portion that protrudes from the in-slot portion outside of the corresponding slot. Each of the electric conductor segments also has an insulating coat covering its outer surface. For each intersecting pair of the protruding portions of the electric conductor segments, at least one of the two protruding portions of the intersecting pair has an indentation formed in a side face thereof radially facing the other protruding portion at the intersection of the two protruding portions. Further, a thickness of the insulating coats at the indentations is substantially equal to a thickness of the insulating coats at the in-slot portions of the electric conductor segments.
Abstract translation: 定子包括中空圆柱形定子芯和由多个电导体段形成的定子线圈。 每个电导体段至少包括容纳在定子芯的相应槽中的槽内部分和从相应槽的外部凹槽部分突出的突出部分。 每个电导体段也具有覆盖其外表面的绝缘涂层。 对于电导体段的每个相交的一对突出部分，交叉对的两个突出部分中的至少一个具有形成在其两个突出部分的相交处的径向面对另一个突出部分的侧面中的凹陷。 此外，凹陷处的绝缘涂层的厚度基本上等于电导体段的槽口部分处的绝缘涂层的厚度。
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公开(公告)号：US20200220421A1
公开(公告)日：2020-07-09
申请号：US16736965
申请日：2020-01-08
Applicant: DENSO CORPORATION
Inventor： Shohei YOSHIOKA , Atsuo ISHIZUKA
Abstract: A rotary electric machine includes a cylindrical portion. In the cylindrical portion, a coolant passage having annular shape is formed to allow the coolant to flow therethrough. The coolant passage is formed meandering in the axial direction and the passage width of the coolant passage in a first end side in the radial direction is narrower than the passage width in the radial direction in the second end side. The coolant passage includes a circumferential passage in the first end side where the coolant flows in the circumferential direction. The circumferential passage is configured such that a passage opening area of an intermediate portion between an input portion in an upstream side of the coolant passage and an output portion in a downstream side of the coolant passage is expanded compared to those of the input portion and the output portion.
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Patent Agency Ranking
公开(公告)号：US20170324286A1
公开(公告)日：2017-11-09
申请号：US15525223
申请日：2015-11-06
Applicant: DENSO CORPORATION
Inventor： Akito AKIMOTO , Masayuki TAKIGUCHI , Atsuo ISHIZUKA
CPC classification number: H02K1/16 , H02K3/12 , H02K3/48 , H02K15/0478 , H02K2213/03
Abstract: A stator includes a stator core having slots arranged in a circumferential direction and a stator coil formed by wave-winding continuous coil wires on the stator core. Each of the continuous coil wires has in-slot portions received in the slots and turn portions each of which connects, on the outside of the slots, one pair of the in-slot portions. The stator coil is formed, by spirally rolling a band-shaped coil wire bundle that is formed by bundling the continuous coil wires, into a cylindrical shape. In the coil wire bundle, the continuous coil wires are transposed at a plurality of locations. Moreover, in a range where the continuous coil wires extend in the circumferential direction of the stator core by one complete turn, at least one interval between adjacent transposition locations in the coil wire bundle is greater than or equal to the circumferential length of one turn portion.
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公开(公告)号：US20170257002A1
公开(公告)日：2017-09-07
申请号：US15447327
申请日：2017-03-02
Applicant: DENSO CORPORATION
Inventor： Atsuo ISHIZUKA , Hiromitsu ASAI , Mitsuyuki HAYASHI , Yoki TSUJIMORI
IPC: H02K3/28 , H02K15/00 , H02K15/085 , H02K3/12
CPC classification number: H02K3/28 , H02K3/12 , H02K15/0068 , H02K15/0081 , H02K15/085
Abstract: A rotating electric machine includes a pair of electric conductors for forming a coil and a weld. Each of the electric conductors has an end portion with an end surface. The weld is formed between the end portions of the electric conductors at the end surfaces of the end portions. Moreover, the end portions of the electric conductors are arranged so that parts of the end portions of the electric conductors adjoin each other. At least one of the end portions of the electric conductors has at least one slit formed therein to divide the end surface of the end portion into a plurality of sections. The weld is formed to cover, at least, the adjoining parts of the end portions of the electric conductors and the at least one slit.
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公开(公告)号：US20200234870A1
公开(公告)日：2020-07-23
申请号：US16835671
申请日：2020-03-31
Applicant: DENSO CORPORATION , NIPPON STEEL CORPORATION
Inventor： Tetsuya AOKI , Makoto TANIGUCHI , Atsuo ISHIZUKA , Satoshi DOI , Keiichi OKAZAKI , Hiroshi FUJIMURA , Tatsuya TAKASE
IPC: H01F27/245 , H01F1/18
Abstract: Disclosed are a core sheet and a manufacturing method thereof. The core sheet has an annular core back portion and a plurality of tooth portions extending from the core back portion toward a radial center thereof. The core sheet is obtained by performing a blanking step, a rolling step and a removing step. In the removing step, an insulation coating, which is on a region of a grain-oriented magnetic steel sheet for forming a band-shaped core back portion, on a band-shaped core back portion of a sheet piece or on the core back portion of the core sheet, is at least partially removed.
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公开(公告)号：US20190123603A1
公开(公告)日：2019-04-25
申请号：US16306692
申请日：2017-06-01
Applicant: DENSO CORPORATION
Inventor： Yuki TAKAHASHI , Atsuo ISHIZUKA
Abstract: A rotor of a rotating electrical machine includes a field core having a boss portion, multiple disc portions, and multiple claw-shaped magnetic pole portions; a field winding wound around an outer peripheral side of the boss portion to generate magnetomotive force by power application; and a tubular member arranged so as to cover the outer periphery of the claw-shaped magnetic pole portions. The tubular member includes multiple steel plates stacked in an axial direction, and is configured such that an inner diameter in a steady state is smaller than the outer diameter of the claw-shaped magnetic pole portions.
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公开(公告)号：US20170033636A1
公开(公告)日：2017-02-02
申请号：US15219752
申请日：2016-07-26
Applicant: DENSO CORPORATION
Inventor： Atsuo ISHIZUKA , Hiroshi KANEIWA , Keiji KONDOU , Hiromitsu ASAI
CPC classification number: H02K3/12 , H02K3/04 , H02K3/32 , H02K3/38 , H02K15/0037 , H02K15/0081
Abstract: A rotating electric machine includes a weld formed by welding end portions of a pair of electric conductors for forming a coil and a weld-insulating member that covers, at least, a surface of the weld. The weld has an uneven portion formed on at least part of the surface thereof. The uneven portion is constituted of a plurality of annular recesses and a plurality of annular protrusions. The annular recesses are formed alternately and continuously with the annular protrusions.
Abstract translation: 旋转电机包括通过焊接用于形成线圈的一对电导体的端部和至少覆盖焊接表面的焊接绝缘构件而形成的焊接。 焊缝具有形成在其表面的至少一部分上的不平坦部分。 凹凸部由多个环状凹部和多个环状突起构成。 环状凹部与环状突起交替且连续地形成。
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