Contact arrangement for electric machine as well as related motor and traffic tool

A technology of electrical contact and conductive contact, which is applied in the direction of electromechanical devices, connection with grounding devices, motor generator connectors, etc., to achieve the effect of reduced friction loss and low cost

Active Publication Date: 2017-12-08
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It has been proven that shaft seals, e.g. radial shaft seals, have undesired mechanical losses due to friction

Method used

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  • Contact arrangement for electric machine as well as related motor and traffic tool
  • Contact arrangement for electric machine as well as related motor and traffic tool
  • Contact arrangement for electric machine as well as related motor and traffic tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057] exist figure 1 shows roughly schematically an electric machine 200 for a hybrid drive of a motor vehicle in a partial view showing the electric machine in longitudinal section up to the axis of rotation 201 of the rotor 202 of the electric machine 200 forming the first element of the electric machine 200 Half of 200. The rotor 202 is designed with a metallic, ie electrically conductive, rotationally symmetrical, hollow shaft or sleeve-shaped bearing section 203 with which the rotor 202 is supported in the form of two bearing elements 204 designed as ball bearings. On the supporting element 205 of the second element of the motor 200 . The rotor 202 surrounds a bearing element 205 and two ball bearings 204 via a hollow shaft or a sleeve-shaped bearing section 203 . The bearing element 205 passes through the bearing section 203 and carries the ball bearing 204 on its outer circumference. The bearing element 205 is also hollow here, that is to say sleeve-shaped, and is r...

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PUM

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Abstract

The invention relates to an electrical contact arrangement (100) for an electrical machine (200). The arrangement comprises: a first element (202) of the machine formed with electrically conductive material is movable, in particular rotatable about an axis of rotation (201), relative to at least one second element formed with electrically conductive material (205) of the machine. The contact arrangement is provided for the movable, in particular rotatable about the axis of rotation for electrical connection of the electrically conductive material of the first element of the machine with the electrically conductive material of the at least one second element of the machine. In order to achieve a reliable separation of the contact arrangement from a lubricant space (206) of the machine, in which no lubricant can get into the contact arrangement, and mechanical losses, in particular by friction, is preferably at least almost completely avoided; the contact arrangement is completed with respect to the lubricant space by at least one lubricant discharge device (108, 109), wherein at least one lubricant discharge device is adapted to promote lubricant from the lubricant space against the contact to be back into the lubricant space.

Description

technical field [0001] The invention relates to a contact device for an electric machine. The invention also relates to an electric machine with such a contact arrangement. Furthermore, the invention relates to a vehicle, in particular a road vehicle, having such an electric machine. Background technique [0002] German patent application 10 2014 226 544.4 describes an electric machine in which a rotor designed with electrically conductive material is movably mounted via at least one bearing element on a support element comprising electrically conductive material. In particular, the rotor and the bearing element are capable of conducting interference currents caused by interference voltages induced by the stator or fed into its windings. The electrically conductive material of the carrier element can be electrically conductively connected to ground potential. In order to prevent interference currents from flowing away uncontrolled from the rotor, for example via the centr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/16H02K11/02H01R39/64
CPCH01R39/64H01R39/646H01R2201/10H02K5/16H02K11/02F16C33/6685F16C2380/26H02K5/167H02K5/173H02K11/40
Inventor J-U.比斯库普R.鲁迪格
Owner VOLKSWAGEN AG
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