公开(公告)号：US20020195887A1

公开(公告)日：2002-12-26

申请号：US10145198

申请日：2002-05-15

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Masakazu Kobayashi ,  Koji Ohtsuka

IPC: H02K009/00

CPC classification number: H02K1/32 ,  H02K9/19

Abstract: A cooling structure for a rotating electric machine is proposed which displays high cooling performance with a simple structure, does not undergo reductions in efficiency when the rotating electric machine is operating at high rotation speeds and has high reliability. The rotating shaft of the rotating element comprises a hollow structure and an inner cylindrical section which rotates together with the rotating shaft is provided with a space in an inner section of the rotating shaft. Coolant flows in an annular gap between the rotating shaft and the inner cylindrical section. In this manner, the rotating element is effectively cooled with a small amount of coolant.

Abstract translation: 提出了一种旋转电机的冷却结构，其具有结构简单的高冷却性能，当旋转电机以高转速运行并且具有高可靠性时，不会降低效率。 旋转元件的旋转轴包括中空结构，并且与旋转轴一起旋转的内圆柱形部分在旋转轴的内部部分中设置有空间。 冷却剂在旋转轴和内圆柱形部分之间的环形间隙中流动。 以这种方式，用少量的冷却剂有效地冷却旋转元件。

公开(公告)号：US20040163409A1

公开(公告)日：2004-08-26

申请号：US10785197

申请日：2004-02-25

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Yuki Nakajima ,  Masahiro Tsukamoto ,  Masakazu Kobayashi ,  Yutaro Kaneko ,  Hiroyuki Kaneko ,  Toshiro Shinohara ,  Makoto Iwashima ,  Yasuhiko Kitajima ,  Akihiro Hanamura ,  Kouichirou Yonekura ,  Tadayuki Hatsuda

IPC: F25B007/00 ,  F25B031/00 ,  F25D023/12

CPC classification number: F16H57/04 ,  B60L1/02 ,  B60L3/003 ,  B60L3/0061 ,  B60L11/1803 ,  B60L2210/40 ,  B60L2240/425 ,  B60L2240/525 ,  B60L2270/147 ,  H02K7/116 ,  H02K9/19 ,  H02K11/33 ,  Y02T10/641 ,  Y02T10/642 ,  Y02T10/7005 ,  Y02T10/7241

Abstract: A drive unit for an electric vehicle is comprised of a motor, an inverter which supplies alternating current electric power to the motor, a speed reducer which is connected to the motor, and a cooling system which cools the motor, the inverter and the speed reducer. The speed reducer reduces a revolution speed of a mechanical output of the motor. The cooling system comprises a heat exchanger at which first refrigerant for receiving heat of at least one of the motor and the inverter receives heat of second refrigerant for receiving heat of at least one of the motor and the speed reducer.

Abstract translation: 电动车辆的驱动单元由电动机，向电动机供给交流电力的逆变器，与电动机连接的减速器以及冷却电动机，变频器和减速器的冷却系统 。 减速机降低了电机机械输出的转速。 冷却系统包括热交换器，在该热交换器中，用于接收电动机和逆变器中的至少一个的第一制冷剂接收用于接收电动机和减速器中的至少一个的第二制冷剂的热量。

公开(公告)号：US20030146667A1

公开(公告)日：2003-08-07

申请号：US10322723

申请日：2002-12-19

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Noboru Hattori ,  Masakazu Kobayashi

IPC: H02K001/32

CPC classification number: H02K1/32 ,  H02K1/276 ,  H02K9/06 ,  H02K9/19

Abstract: A coolant inlet and a coolant outlet are opened on an inner surface enclosing an inner space of a rotation object. The coolant inlet and the coolant outlet are located on a rotation axis and face each other. A main-stream which flows straightly along the rotation axis from the coolant inlet to the coolant outlet is generated in a central space of the inner space. Therefore, a resistance about the coolant stream is small. In addition, a sub-stream which circulates in a radial direction is generated in a peripheral space around the central space. By generating a contact between the main-stream and the sub-stream, it is possible to obtain high performance of cooling.

Abstract translation: 冷却剂入口和冷却剂出口在包围旋转物体的内部空间的内表面上打开。 冷却剂入口和冷却剂出口位于旋转轴线上且彼此面对。 在内部空间的中心空间中产生沿着旋转轴线从冷却剂入口直接流到冷却剂出口的主流。 因此，关于冷却剂流的电阻很小。 此外，在中心空间周围的周边空间中产生沿径向循环的子流。 通过在主流和副流之间产生接触，可以获得高性能的冷却。

公开(公告)号：US20040108778A1

公开(公告)日：2004-06-10

申请号：US10700645

申请日：2003-11-05

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Masahiro Tsukamoto ,  Yuki Nakajima ,  Toshiro Shinohara ,  Hiroyuki Kaneko ,  Yasuhiko Kitajima ,  Makoto Iwashima ,  Akihiro Hanamura ,  Kouichirou Yonekura ,  Tadayuki Hatsuda ,  Masakazu Kobayashi ,  Yutaro Kaneko

IPC: H02K011/00 ,  H02K007/10

CPC classification number: H02K7/116 ,  B60K1/00 ,  B60L15/007 ,  H02K11/33 ,  Y02T10/641 ,  Y02T10/645

Abstract: An integrated drive motor unit which is integrally constituted of a motor, an inverter and a reducer differential unit arranged in a row, and a frame member. The reducer differential unit is connected to an output shaft of the motor, and distributes torque of the motor to a pair of axles, one of which passes through the inverter. The frame member constitutes a part of the motor and a part of the reducer differential unit, and has a portion surrounding the axle passing through the inverter. The inverter is disposed outside the frame member.

Abstract translation: 一体的驱动电动机单元，其由电动机，逆变器和排列成一排的减速器差动单元一体地构成，框架构件。 减速器差动单元连接到电动机的输出轴，并将电动机的转矩分配给一对轴，其中一个轴通过逆变器。 框架构件构成电动机的一部分和减速器差速器的一部分，并且具有围绕通过逆变器的车轴的部分。 逆变器设置在框架构件的外部。