公开(公告)号：US09444313B2

公开(公告)日：2016-09-13

申请号：US14258499

申请日：2014-04-22

Applicant: DENSO CORPORATION

Inventor： Makoto Taniguchi

IPC: H02K5/04 ,  H02K5/15 ,  H02K29/08 ,  H02K29/06 ,  H02K29/03

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

Abstract: 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.

Abstract translation: 电动机包括嵌合于壳体的圆筒部的定子铁芯，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：US09425658B2

公开(公告)日：2016-08-23

申请号：US14034959

申请日：2013-09-24

Applicant: DENSO CORPORATION

Inventor： Hiroki Tomizawa ,  Makoto Taniguchi

IPC: H02K21/12 ,  H02K1/27

CPC classification number: H02K1/278

Abstract: 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.

Abstract translation: 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：US09337698B2

公开(公告)日：2016-05-10

申请号：US14286540

申请日：2014-05-23

Applicant: DENSO CORPORATION

Inventor： Makoto Taniguchi ,  Hiroshi Imai

IPC: H02K5/00 ,  H02K5/15 ,  H02K5/22 ,  H02K5/04

CPC classification number: H02K5/15 ,  H02K5/04 ,  H02K5/22

Abstract: A rotating electric machine has a first frame and a second frame disposed at one axial end of a casing. The first and second frames have a first flange and a second flange, respectively, that protrude outwardly from the casing. The first and second flanges are fastened together by a through bolt. The first flange includes a recessed portion having a first curved portion, a second curved portion, and a third curved portion. A curvature radius of the third curved portion is greater than a curvature radius of the first curved portion and a curvature radius of the second curved portion such that a concentration of stress within the third curved portion that is caused by a fastening force of the through bolt may be reduced.

Abstract translation: 旋转电机具有设置在壳体的一个轴向端部的第一框架和第二框架。 第一和第二框架分别具有从壳体向外突出的第一凸缘和第二凸缘。 第一和第二凸缘通过贯穿螺栓紧固在一起。 第一凸缘包括具有第一弯曲部分，第二弯曲部分和第三弯曲部分的凹陷部分。 第三弯曲部的曲率半径大于第一弯曲部的曲率半径和第二弯曲部的曲率半径，使得由第三弯曲部的紧固力引起的第三弯曲部内的应力集中 可能会减少。

公开(公告)号：US09166504B2

公开(公告)日：2015-10-20

申请号：US13644739

申请日：2012-10-04

Applicant: DENSO CORPORATION

Inventor： Makoto Taniguchi ,  Kouichi Nagata ,  Masahiko Osada

IPC: H02P9/14 ,  H02P6/08 ,  H02P27/08 ,  H02P9/30

CPC classification number: H02P6/085 ,  H02P9/302 ,  H02P27/08 ,  H02P2207/05 ,  H02P2209/01

Abstract: A control apparatus for a motor-generator includes a stator including multi-phase coils, a rotor, a multi-phase inverter one arm of which includes a switch element and a free-wheeling element, and a power supply connected between a neutral point of the coils and a negative electrode of the inverter. When the switch elements are driven by rectangular wave, the low-side switch element connected to the high-side switch element is subject to PWM switching control while the high-side switch element is off. When a time point, at which the high-side switch element is turned off, is defined as a base point, if α is defined as a time when switching of the low-side switch element starts, and β is defined as a time when the switching ends, β-α is 120 degrees in electrical degree or more, α is more than 0 degrees, and β is less than 180 degrees.

Abstract translation: 一种电动发电机的控制装置，包括具有多相线圈的定子，转子，具有开关元件和续流元件的多相逆变器单臂，以及连接在 线圈和逆变器的负极。 当开关元件由矩形波驱动时，连接到高侧开关元件的低侧开关元件在高侧开关元件断开时进行PWM开关控制。 当高侧开关元件关闭的时间点被定义为基点时，如果α被定义为开关低侧开关元件的开关的时间，并且＆bgr; 被定义为开关结束时的时间，-α在电度或120度以上，α大于0度，＆bgr; 小于180度。

公开(公告)号：US20150162789A1

公开(公告)日：2015-06-11

申请号：US14560871

申请日：2014-12-04

Applicant: DENSO CORPORATION

Inventor： Asuka TANAKA ,  Akihiro Kimura ,  Jirou Hayashi ,  Makoto Taniguchi

IPC: H02K1/27 ,  H02K1/16

CPC classification number: H02K1/278 ,  H02K1/276 ,  H02K2213/03

Abstract: Each permanent magnet provided in a rotor includes a projection that projects toward a corresponding predetermined portion of the rotor core. An inner peripheral surface of each permanent magnet, which is radially opposed to the corresponding predetermined portion of the rotor core, includes a primary contacting portion and two primary non-contacting portions. The primary contacting portion contacts the corresponding predetermined portion of the rotor core at a circumferential location, which corresponds to the projection. The primary non-contacting portions do not contact the rotor core and are located on two circumferentially opposite sides, respectively, of the primary contacting portion.

Abstract translation: 设置在转子中的每个永磁体包括朝向转子芯的对应的预定部分突出的突起。 每个永磁体的径向相对于转子芯的相应的预定部分的内周表面包括主接触部分和两个初级非接触部分。 初级接触部分在对应于突起的圆周位置处接触转子芯的相应的预定部分。 主非接触部分不接触转子芯并且分别位于主接触部分的两个周向相对的侧面上。