公开(公告)号：US20210234491A1

公开(公告)日：2021-07-29

申请号：US17232289

申请日：2021-04-16

申请人： DENSO CORPORATION

发明人： Yoshimitsu TAKAHASHI ,  Makoto TANIGUCHI

IPC分类号： H02P27/06 ,  H02M7/5387 ,  H02P25/22 ,  H02P23/14

摘要： The present disclosure provides a power conversion apparatus converting a power from a DC power source, supplying the converted power to a rotary electric machine to drive the rotary electric machine. The power conversion apparatus according to the present disclosure includes: a first inverter circuit electrically connected to a first end of each of phase winding, transmitting power between respective phase windings and the DC power source; a second inverter circuit electrically connected to a second end each of phase winding, transmitting power between respective phase windings and the DC power source; and a control unit controlling the first inverter circuit and the second inverter circuit. The control unit is configured to change a total amount of current flowing through respective phase windings depending on a rotational speed of the rotary electric machine.

公开(公告)号：US20210234415A1

公开(公告)日：2021-07-29

申请号：US17226657

申请日：2021-04-09

申请人： DENSO CORPORATION

发明人： Makoto TANIGUCHI ,  Yuki TAKAHASHI

IPC分类号： H02K1/18 ,  H02K3/28 ,  H02K1/27 ,  H02K1/02

摘要： A rotating electric machine includes a rotor and a stator. The rotor includes a magnet section constituted of permanent magnets. The stator is arranged coaxially with the rotor and includes a stator coil and a stator coil holder. The stator coil is formed of electrical conductors arranged in a circumferential direction of the stator. The stator coil holder is configured to hold the stator coil. In the stator, there are provided inter-conductor members between the electrical conductors in the circumferential direction or no inter-conductor members are provided between the electrical conductors in the circumferential direction. Moreover, the inter-conductor members are formed of a magnetic material satisfying a predetermined relationship or formed of a nonmagnetic material. The stator coil has a coil end part protruding from an axial end of the stator coil holder. A soft-magnetic member is provided on at least part of a surface of the coil end part.

公开(公告)号：US20200234870A1

公开(公告)日：2020-07-23

申请号：US16835671

申请日：2020-03-31

申请人： DENSO CORPORATION ,  NIPPON STEEL CORPORATION

发明人： Tetsuya AOKI ,  Makoto TANIGUCHI ,  Atsuo ISHIZUKA ,  Satoshi DOI ,  Keiichi OKAZAKI ,  Hiroshi FUJIMURA ,  Tatsuya TAKASE

IPC分类号： H01F27/245 ,  H01F1/18

摘要： 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.

公开(公告)号：US20200052638A1

公开(公告)日：2020-02-13

申请号：US16598753

申请日：2019-10-10

申请人： DENSO CORPORATION

发明人： Hirofumi KINJO ,  Toru WAKIMOTO ,  Makoto TANIGUCHI ,  Keiji KONDO ,  Jun ISHIDA ,  Tomoya TAKAHASHI

IPC分类号： H02P25/20 ,  H02K3/28 ,  H02K17/14 ,  H02P25/22

摘要： In a rotary electric machine, a rotor, and a stator. The stator includes slots provided in a circumferential direction thereof, and stator windings wound in the slots. The stator windings include n groups of three-phase windings, where n is a power of 2. The slots include first slots each accommodating portions of same-group and same-phase windings in the n groups of three-phase windings. The energizing directions of the same-group and same-phase windings are identical to each other. The second slots each accommodate different-group and same-phase windings in the n groups of three-phase windings. The first slots and the second slots are arranged in the stator at predetermined intervals in a circumferential direction of the stator, and the three-phase windings of each group are wound around the stator with regular intervals therebetween.

公开(公告)号：US20190312487A1

公开(公告)日：2019-10-10

申请号：US16369671

申请日：2019-03-29

申请人： DENSO CORPORATION

发明人： Ryotaro OKAMOTO ,  Hirofumi KINJO ,  Makoto TANIGUCHI

IPC分类号： H02K9/19 ,  B60L50/50 ,  H02K11/33 ,  H02K5/20

摘要： A rotating electric machine unit includes a rotating electric machine, a high heat generation circuit and a low heat generation circuit both of which are electrically connected with the rotating electric machine, a first cooler, a first-coolant supplier, a second cooler and a second-coolant supplier. The first cooler is configured to cool both the high heat generation circuit and the low heat generation circuit with a first coolant. The first-coolant supplier is configured to supply the first coolant to the first cooler. The second cooler is configured to cool the rotating electric machine with a second coolant. The second-coolant supplier is configured to supply the second coolant to the second cooler. The second-coolant supplier is formed integrally with a low heat generation circuit-cooling part of the first cooler. The second-coolant supplier includes a heat exchanger via which heat is exchanged between the first coolant and the second coolant.

公开(公告)号：US20140339966A1

公开(公告)日：2014-11-20

申请号：US14278280

申请日：2014-05-15

申请人： DENSO CORPORATION

发明人： Hiroki TOMIZAWA ,  Makoto TANIGUCHI

IPC分类号： H02K5/22 ,  H02K11/00

CPC分类号： H02K5/22 ,  H02K11/33

摘要： A motor casing of a driving device has a cylindrical wall portion, a bottom wall portion and a bearing holding portion formed in the bottom wall portion. An electric motor has a stator, a shaft and a rotor. A motor control unit controls operation of the electric motor. A first frame, to which the motor control unit is fixed, is provided between the motor control unit and the bottom wall portion of the motor casing. A first contacting portion is formed in the bottom wall portion and projected toward the first frame. The first contacting portion is in contact with the first frame at a front-side surface of the first contacting portion. A contacting surface area between the motor casing and the first frame is limitedly reduced, to thereby reduce noise caused by vibration. In addition, since a sufficient surface pressure can be obtained, strength of the driving device in its axial direction is increased.

摘要翻译： 驱动装置的电机壳体具有形成在底壁部分中的圆筒形壁部分，底壁部分和轴承保持部分。 电动机具有定子，轴和转子。 电机控制单元控制电动机的运行。 马达控制单元与电动机壳体的底壁部之间设置有固定有马达控制单元的第一框架。 第一接触部分形成在底壁部分中并朝向第一框架突出。 第一接触部分在第一接触部分的前侧表面与第一框架接触。 马达壳体与第一框架之间的接触表面区域被有限地减小，从而减少由振动引起的噪音。 此外，由于可以获得足够的表面压力，驱动装置的轴向强度增加。

公开(公告)号：US20140312746A1

公开(公告)日：2014-10-23

申请号：US14258499

申请日：2014-04-22

申请人： Denso Corporation

发明人： Makoto TANIGUCHI

IPC分类号： H02K5/04 ,  H02K11/00

CPC分类号： H02K11/21 ,  H02K5/04 ,  H02K5/15 ,  H02K11/215 ,  H02K29/03 ,  H02K29/06 ,  H02K29/08 ,  H02K2201/03 ,  H02K2213/03

摘要： A motor includes a stator core fitted to a cylindrical portion of a case, a rotor core being rotatable in the stator core, soft magnetic poles radially extending from the rotor core, and magnet poles disposed between the soft magnetic poles. The case includes a bottom portion having a ring-shaped plate portion, a protrusion portion, and a bearing-supporting portion extending from the protrusion portion. A condition that L2≧t and a condition that L1≧L2 are met, wherein t represents a thickness of the bottom portion, L1 represents a distance in an axial direction between a side surface of the ring-shaped plate portion close to the stator core and a protrusion end of the protrusion portion close to the rotor core, and L2 represents a distance in the axial direction between the side surface and an end surface of a bearing opposite to the rotor core.

摘要翻译： 电动机包括嵌合于壳体的圆筒部的定子铁心，能够在定子铁芯中旋转的转子铁芯，从转子铁心径向延伸的软磁极以及设置在软磁极之间的磁极。 壳体包括具有环形板部分，突出部分和从突起部分延伸的支承部分的底部。 满足L2≥t的条件和满足L1≥L2的条件，其中t表示底部的厚度，L1表示环形板部分靠近定子芯的侧表面之间的轴向距离 突出部的突出端靠近转子铁心，L2表示与转子铁心相反的轴承的侧面和端面之间的轴向方向的距离。

公开(公告)号：US20140184009A1

公开(公告)日：2014-07-03

申请号：US14142218

申请日：2013-12-27

申请人： DENSO CORPORATION

发明人： Makoto TANIGUCHI ,  Hiroki Tomizawa ,  Tatsuya Inagaki ,  Masahiro Goto

IPC分类号： H02K1/27

CPC分类号： H02K1/2746 ,  H02K2213/03

摘要： A motor is provided having a consequent-pole type rotor that has soft magnetic material poles and magnetic poles positioned around the rotor in an alternating manner. A convex surface on each of the poles is formed as a surface in which a midpoint of the convex surface has a radial distance from the rotation axis that is greater than a radial distance of the circumferential edges of the convex surface from the rotation axis. A radial width of a first magnetism transfer part of a cylindrical yoke and a radial width of a second magnetism transfer part of the magnetic pole fulfill a relationship such that an appropriate balance of the magnetic resistance between the first magnetism transfer part and the second magnetism transfer part is achieved. As a result, cogging torque is reduced without reducing output torque.

摘要翻译： 提供一种电动机，其具有随后的极型转子，其具有以交替方式设置在转子周围的软磁性材料极和磁极。 每个极上的凸表面形成为凸表面的中点距离旋转轴线的径向距离大于凸表面的周向边缘与旋转轴线的径向距离的表面。 圆柱形磁轭的第一磁性传递部分的径向宽度和磁极的第二磁性传递部分的径向宽度实现了这样的关系，使得第一磁传递部分和第二磁传递部分之间的磁阻的适当平衡 部分实现。 结果，齿槽转矩减小而不降低输出转矩。

公开(公告)号：US20140111051A1

公开(公告)日：2014-04-24

申请号：US14034959

申请日：2013-09-24

申请人： DENSO CORPORATION

发明人： Hiroki TOMIZAWA ,  Makoto TANIGUCHI

IPC分类号： H02K1/27

CPC分类号： H02K1/278

摘要： A rotor has a rotor shaft, a rotor boss, a first magnetic pole, a second magnetic pole, an end cover, and a radially-outer cover. The first and the second magnetic poles are placed to a radially outer periphery of the rotor boss to be alternately arranged in a circumferential direction. A space is defined between the end cover and the first magnetic pole or the second magnetic pole, which is made of a magnet. The radially-outer cover has a first end portion and a second end portion, at least one of the first end portion and the second end portion being defined as a particular end portion. The particular end portion of the radially-outer cover is inwardly crimped onto the end cover in a radial direction.

摘要翻译： 转子具有转子轴，转子凸台，第一磁极，第二磁极，端盖和径向外盖。 第一和第二磁极被放置在转子凸台的径向外周上，以沿圆周方向交替布置。 在端盖和由磁体制成的第一磁极或第二磁极之间限定一个空间。 径向外盖具有第一端部和第二端部，第一端部和第二端部中的至少一个被限定为特定的端部。 径向外盖的特定端部沿径向向内卷曲到端盖上。

公开(公告)号：US20140062236A1

公开(公告)日：2014-03-06

申请号：US14016313

申请日：2013-09-03

申请人： DENSO CORPORATION

发明人： Makoto TANIGUCHI ,  Hiroki TOMIZAWA

IPC分类号： H02K3/28

CPC分类号： H02K3/28 ,  H02K3/505 ,  H02K11/33

摘要： A rotating electric machine drive system has a rotating electric machine and a controller positioned on an axial end of a rotating shaft of the rotating electric machine. The controller has a main current circuit board for flowing a main electric current. The system includes a conductor extending in a direction parallel to the rotating shaft of the rotating electric machine, serving as a stator winding wire, and connecting to the main current circuit board of the controller. In such a structure, a cross-sectional area of a terminal connection portion on an extension part of the conductor extending in a direction parallel to the rotating shaft is less than a cross-sectional area of a portion of the conductor within a plurality of conductor housings arranged on circumference of a stator of the rotating electric machine.

摘要翻译： 旋转电机驱动系统具有旋转电机和位于旋转电机的旋转轴的轴向端的控制器。 该控制器具有用于流过主电流的主电流电路板。 该系统包括在与旋转电机的旋转轴平行的方向上延伸的导体，用作定子绕组线，并连接到控制器的主电流电路板。 在这种结构中，导体延伸部分上的端子连接部分的横截面积在平行于旋转轴的方向上延伸的面积小于多个导体内的导体的一部分的横截面积 壳体布置在旋转电机的定子的圆周上。