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Multi-gap electric rotating machine

一种旋转电机、多间隙的技术，应用在电机、带有静止电枢和旋转磁体的同步电动机、机电装置等方向，能够解决难定子固定、大噪音、易变形等问题，达到提高生产率、简化组装过程的效果

Inactive Publication Date: 2012-05-09
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, both the inner rotor and the outer rotor may be easily deformed, thereby generating a lot of noise during operation
Third, since the stator is radially interposed between the two rotating objects, the inner rotor and the outer rotor, it is difficult to secure the stator firmly in a rotating electrical machine
However, in this case, the fixing member will be positioned axially outside the coil ends of the stator coils of the inner stator 31A and the outer stator 33A, thereby increasing the overall axial length of the motor
As a result, the motor may become less flat in shape and thus may make it difficult to fit the motor inside the wheel

Method used

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no. 1 approach

[0044] figure 1 The overall configuration of the multi-gap rotating electrical machine according to the first embodiment of the present invention is shown. In this embodiment, the multi-gap rotary electric machine is configured as an engine direct-coupled motor 1 for a hybrid vehicle.

[0045] Specifically, in figure 1 In , reference numeral 10 denotes an engine of the hybrid vehicle fixed to an engine mount 11 . Reference numeral 12 denotes a crankshaft (or an output shaft) of the engine 10 . The open end of the substantially cup-shaped casing 13 is fixed to one end of the engine frame 11 (ie, via a tubular casing 14 ). figure 1 the right end of the middle). A transmission shaft 15 is rotatably supported at a central portion of the bottom wall of the cup-shaped housing 13 via a bearing 16 . A propeller shaft 15 extends into the housing 13 and is disposed coaxially with the crankshaft 12 of the engine 10 .

[0046] The electric motor 1 is arranged within a tubular housin...

no. 2 approach

[0093] Figure 12 An overall configuration of a multi-gap rotating electrical machine according to a second embodiment of the present invention is shown. In the present embodiment, the multi-gap rotating electrical machine is configured as an in-wheel motor 101 for an electric vehicle.

[0094] Specifically, such as Figure 12 As shown, the hub motor 101 includes a housing 102 and a rotating shaft 103 . The housing 102 is mounted to the vehicle body via a suspension (not shown). The rotating shaft 103 has a Figure 12 The hub 104 at the left end in ), the hub 104 protrudes outward from the housing 102. The wheel 105 is secured to the hub 104 by studs 106 .

[0095] The housing 102 includes a substantially cup-shaped outer housing piece 107 and an inner housing piece 108 . The inner case member 108 is fixed to the outer case member 107 by bolts (not shown) so as to cover the open end of the outer case member 107 . Each of the outer case piece 107 and the inner case piece...

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Abstract

In a multi-gap electric rotating machine, a stator core has a radially outer portion, a radially inner portion and a connecting portion. The radially outer portion is located radially outside of a rotor core with a radially outer magnetic gap formed therebetween. The radially inner portion is located radially inside of the rotor core with a radially inner magnetic gap formed therebetween. The connecting portion radially extends to connect the radially outer and inner portions and is located on one axial side of the rotor core with an axial magnetic gap formed therebetween. A stator coil is formed of electric wires mounted on the stator core. Each of the electric wires has radially-outer in-slot portions, radially-inner in-slot portions and radially-intermediate in-slot portions, which are respectively received in slots of the radially outer portion, slots of the radially inner portion and slots of the connecting portion of the stator core.

Description

technical field [0001] The invention relates to a multi-gap rotating electrical machine, which is used, for example, as a motor and generator in motor vehicles. Background technique [0002] There are rotating electrical machines that are used in a narrow space and thus require a flat shape, such as a direct-engine-coupled electric motor provided between an engine and a transmission in a hybrid vehicle, and electric motors for home appliances such as washing machines. Furthermore, as a method of increasing the output torque of these rotating electrical machines, a double gap structure including a radially inner magnetic gap and a radially outer magnetic gap is known. [0003] In addition, as a double-gap rotating electrical machine, a 1-stator-2-rotor rotating electrical machine and a 1-rotor-2-stator rotating electrical machine are known. [0004] A 1 stator-2 rotor rotating electrical machine includes a stator and an inner rotor and an outer rotor. The stator includes a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/06H02K1/12
CPCH02K2201/03H02K21/14H02K21/24H02K7/14H02K21/22B60L15/20B60L2210/40B60L2220/44B60L2240/423B60L2260/22B60L50/16Y02T10/64Y02T10/7072Y02T10/72Y02T90/16Y02T10/70
Inventor 草濑新
Owner DENSO CORP