Unlock instant, AI-driven research and patent intelligence for your innovation.

Rotating electric machine and electric power steering apparatus

A technology for rotating electrical machines and electric power, applied in electric steering mechanisms, electrical components, electromechanical devices, etc., can solve problems such as failure of electric power steering equipment, loss of noise protection function of electrolytic capacitors, abnormal functions of control wiring parts, etc., to prevent damage, prevent unusual effect

Inactive Publication Date: 2014-02-12
DENSO CORP
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the leakage and / or explosion of the electrolytic capacitor should only cause the loss of the noise protection function, and should not affect other parts such as the drive of the rotating electric machine, the operation of the electric power steering device and / or the running of the vehicle
However, leakage or explosion of the electrolytic capacitor in Patent Document 1 may cause malfunction of the control wiring portion, resulting in failure of the power steering device

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rotating electric machine and electric power steering apparatus
  • Rotating electric machine and electric power steering apparatus
  • Rotating electric machine and electric power steering apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example ）

[0029] exist figure 1 A first embodiment of the rotating electric machine in the present disclosure is shown in . The rotary electric machine 1 is driven by receiving electric power supply, and is used in an electric power steering apparatus to assist a steering operation of a vehicle.

[0030] figure 2 Steering system 100 is illustrated with electric power steering apparatus 109 . In an electric power steering apparatus 109 , a torque sensor 104 is arranged on a steering shaft 102 and connected to a steering wheel 101 . The torque sensor 104 detects the steering torque input from the steering wheel 101 to the steering shaft 102 by the driver of the vehicle.

[0031] A pinion 106 is arranged on the top end of the steering shaft 102 , and the pinion 106 meshes with a bogie 107 . At both ends of the bogie 107, a pair of tires 108 are rotatably connected by tie rods or the like.

[0032] In this manner, when the driver of the vehicle rotates the steering wheel 101 , the ste...

no. 2 example ）

[0073] Figure 6 The electric power steering apparatus in the second embodiment of the present disclosure is shown.

[0074] The second embodiment differs from the first embodiment in that a reduction gear 103 is arranged on a bogie 107 . The rotary electric machine 1 is mounted on the housing 110 of the reduction gear 103 . The reduction gear 103 reduces the rotational speed of the rotary electric machine 1 and transmits the rotation to the bogie 107 . In other words, the electric power steering device 109 in the second embodiment is a rack-assisted electric power steering device.

[0075] Such as Figure 6 As shown, the rotating electrical machine 1 is mounted on the housing 110 of the reduction gear 103 in the present embodiment so that the axis Ax of the motor housing 11 forms an angle of about 5 degrees with respect to an imaginary plane P1 perpendicular to the vertical direction. Therefore, when the rotary electric machine 1 is mounted on the reduction gear 103, the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A rotating electric machine for driving a drive object includes a heat sink having a cavity on a first face, a power module disposed on the heat sink for switching a power supply for the winding, a power wiring part disposed on the first face of the heat sink and electrically connected to the power module for flowing a drive electric current to the winding, a control wiring part disposed on a second face of the heat sink and electrically connected to the power module for flowing a control electric current that controls the power module, and at least one electrolytic capacitor disposed in the power wiring part and housed in the cavity, thereby preventing an abnormality of the electrolytic capacitor from causing an abnormality of the control wiring part.

Description

technical field [0001] The present disclosure generally relates to rotating electric machines for driving electric power steering equipment. Background technique [0002] In general, a rotating electric machine has a motor unit and a control unit formed as a single body. For example, the rotating electrical machine in Patent Document 1 (ie, Japanese Patent Laid-Open No. 2011-250489) has: a control unit; a heat sink for cooling a power module; a power wiring section for flowing a driving current to a motor section; and The control wiring part is used to control the control current to the power module. The radiator includes: two heat radiation blocks; and a connecting portion for connecting (that is, bridge) the short side ends of the two plate-shaped heat radiation blocks. The power wiring part is arranged on one side of the radiator. The control wiring portion is arranged on the opposite side of the heat sink, that is, the opposite side to the side on which the power wiri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02K11/00B62D5/04
CPCH02K11/0073H02K11/33
Inventor 瓜生信彦山崎雅志
Owner DENSO CORP