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Electric drive apparatus

A technology for electric drive and rotating motors, applied in the direction of electric power devices, power devices, electromechanical devices, etc., can solve the problems of increasing the size and/or number of parts of electric drive devices, and achieve the purpose of suppressing thermal deterioration, suppressing load increase, Inhibition of the effects transmitted to the transmission

Pending Publication Date: 2020-09-18
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, however, the size and / or number of parts of the electric drive will increase

Method used

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  • Electric drive apparatus
  • Electric drive apparatus
  • Electric drive apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Hereinafter, exemplary embodiments are described with reference to the accompanying drawings.

[0038] figure 1 The overall structure of the electric drive device 1 according to the exemplary embodiment is shown.

[0039] In the present exemplary embodiment, the electric drive 1 is designed for a vehicle. It should be noted that the electric drive 1 can also be used in other applications, such as industrial, marine, aviation and domestic applications.

[0040] Such as figure 1 As shown, the electric drive device 1 according to the present embodiment includes a rotary electric machine 10 and a transmission 60 integrally formed with each other.

[0041] In the present embodiment, the rotary electric machine 10 is configured as an inner rotor type polyphase AC motor. In addition, the rotary electric machine 10 may be a synchronous motor or an induction motor.

[0042] Hereinafter, the direction in which the central axis of the rotating shaft 11 of the rotary electric ma...

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PUM

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Abstract

An electric drive apparatus includes a rotating electric machine and a transmission. The rotating electric machine includes a rotor, a stator and a first housing. The transmission includes a motive power transmitting unit, a second housing provided integrally with the first housing, and lubricating oil provided in the second housing to lubricate the motive power transmitting unit. The stator includes a stator coil that has first and second coil end parts respectively protruding from first and second axial end faces of a stator core. Each of phase windings of the stator coil has turn portions included in the first coil end part and joints included in the second coil end part. The second coil end part is located on the same axial side of the stator core as the transmission whereas the firstcoil end part is located on the opposite axial side of the stator core to the transmission.

Description

technical field [0001] The present disclosure relates to an electric drive comprising a rotary electric machine and a transmission. Background technique [0002] For example, from Japanese Patent Application Publication No. JP H08-130856 A, an electric drive device for a vehicle is known. This electric drive unit has a rotary electric machine and a transmission integrally. For such an electric drive device, it is desired to improve output performance and minimize size to improve its mountability on vehicles. [0003] On the other hand, in known electric drives, the heat generated in the rotating electric machine can be transferred to the transmission, causing thermal degradation of the lubricating oil used in the transmission. This problem becomes particularly noticeable when increasing the output density of the rotating electrical machine to improve the output performance of the electric drive, for example, by increasing the current supplied to the stator coils of the rot...

Claims

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Application Information

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IPC IPC(8): H02K3/04H02K3/28H02K3/50H02K5/20H02K5/22H02K7/10F16H57/04B60K1/00B60K17/06
CPCH02K3/04H02K3/28H02K3/50H02K7/10H02K5/225F16H57/04F16H57/0483B60K1/00B60K17/06H02K2213/03H02K5/203H02K7/116H02K3/12H02K3/38F16H57/0476H02K9/19
Inventor 远藤寛士谷江亮
Owner DENSO CORP