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Stator for an electric machine with improved cooling, electric machine and motor vehicle

A technology for motor vehicles and stators, used in cooling/ventilation devices, electromechanical devices, electric components, etc., can solve the problems of no magnetic permeability, hindering stator magnetic flux, high power loss, etc.

Pending Publication Date: 2021-02-02
DR ING H C F PORSCHE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A problem here, however, is that the thermal conductors typically do not have good magnetic permeability and thus impede the magnetic flux in the stator
The result is high power loss

Method used

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  • Stator for an electric machine with improved cooling, electric machine and motor vehicle
  • Stator for an electric machine with improved cooling, electric machine and motor vehicle
  • Stator for an electric machine with improved cooling, electric machine and motor vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] FIG. 1( a ) and FIG. 1( b ) respectively schematically show a stator 1 with a stator lamination pack 2 according to an exemplary embodiment of the present invention. The stator lamination pack 2 has stator laminations 3 stacked on top of each other in the axial direction A and welded to each other. When the stator 1 is in operation, heat is mainly generated inside the stator 2 . At the outer side of the stator 1 , a cooling jacket made of aluminum, not shown, is shrunk. A cooling liquid flows through the cooling jacket and cools the outer side of the stator lamination stack 2 . The cooling cover is fixed at four aligned recesses 5 that are evenly distributed in the azimuthal direction. In order to improve the heat conduction from the inside of the stator lamination stack 2 towards the outside of the stator lamination stack 2 , the stator laminations 3 have strip-shaped inserts 4 arranged in the radial direction R. These inserts 4 are made of a material with good ther...

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PUM

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Abstract

A stator (1) for an electric machine (100) has stator laminations (3) stacked in an axial direction (A) to form a stator lamination stack (2). The stator laminations (3) have strip-shaped inserts (4)extending in a radial direction (R). The inserts (4) have a higher thermal conductivity than the rest of the stator lamination (3). The stator laminations (3) are rotated in relation to one another inan azimuthal direction (U) about an angle of rotation (D) in such a manner that the inserts (4) of directly adjacent stator laminations (3) are not arranged one above another in the axial direction (A). An electric machine (100), a motor vehicle (200) and a method for producing a stator (1) also are provided.

Description

technical field [0001] The invention relates to a stator for an electric machine, an electric machine, a motor vehicle and a method for producing the stator. Background technique [0002] The power of a motor is primarily limited by its thermal limits. The most critical here is the stator, whose electrical leads generally generate most of the heat due to ohmic resistance and the stator core through the stator laminations due to magnetization losses and eddy current losses becomes the power limiting component of the motor. In addition to the thermal tolerance of the installed components, cooling also plays an important role. It is widely used to dissipate heat from the stator by means of cooling elements arranged externally on the stator. For this, however, the heat has to be conducted outwards via the stator yoke to the cooling element. [0003] For the production of the stator yoke, silicon steels are frequently used, and to a lesser extent also cobalt and nickel alloys ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/12H02K9/22H02K15/02
CPCH02K1/12H02K9/22H02K15/02H02K1/16H02K2201/06H02K1/20H02K15/024H02K9/223
Inventor S·格利茨
Owner DR ING H C F PORSCHE AG
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