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Stator and method for manufacturing a stator of an electric machine

A stator and machine technology, applied in the field of manufacturing stators of electric machines, can solve the problem that conductors cannot move relative to each other, achieve the effects of cheap complexity, simplified manufacturing methods, and extended service life

Pending Publication Date: 2022-01-07
DR ING H C F PORSCHE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, impregnation or casting with resin, which is usually used to fix the conductors arranged in the grooves so that they cannot move relative to each other, is abandoned

Method used

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  • Stator and method for manufacturing a stator of an electric machine
  • Stator and method for manufacturing a stator of an electric machine
  • Stator and method for manufacturing a stator of an electric machine

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Embodiment Construction

[0033] exist figure 1 In the flow chart shown in , an embodiment of the method according to the invention is shown. In a first step 10 the method comprises providing a conductor roll, eg a copper conductor roll, on which the conductor is wound. In this step, the volume is unwound during preparation.

[0034] In a further step 11 , the method includes locally coating that portion of the conductor strip corresponding to the at least one conductor having a local, expandable coating.

[0035] In a further step 12 , the required conductors are produced by separating / separating the conductors from the conductor strips, wherein the conductors can be provided in the correct length here. In the case of the use of plug-in coils, so-called hairpins (hairpin-shaped conductors) can also be produced in this step by correspondingly bending straight conductor sections.

[0036] In a subsequent step 13 the method comprises forming a winding of the stator by introducing / arranging conductors ...

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PUM

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Abstract

A method for manufacturing a stator (20) of an electric machine is provided. The method comprises: providing the stator (20), the stator having at least one stator groove (22), the at least one stator groove being delimited by two stator teeth; introducing an electrical conductor (30) into the at least one stator groove (22), wherein the at least one conductor (30) has an expandable coating (25) locally applied on its surface; and activating the expandable coating (25) to expand the expandable coating (25), thereby securing the conductors (30) within the stator groove (22). Furthermore, a stator (20) produced according to the method of the invention is provided.

Description

technical field [0001] The invention relates to a method for producing a stator of an electric machine and a stator produced according to the method. Background technique [0002] Electric machines use a rotor and a stator in order to convert electrical power into mechanical power (electric motors) and vice versa (generators) by means of electromagnetic induction. Although modern electric machines used in today's electric vehicles have extremely high efficiencies well above 90%, power losses due to heat loss in conductors through which current flows during operation are unavoidable and must be discharge. If insufficient removal of the lost heat occurs, this has a negative effect on the power efficiency and service life of the electric machine. In high-power machines with a power of several hundred kilowatts, the heat loss that occurs at higher power is usually dissipated by means of water cooling. [0003] In principle, there are two variants for cooling electric machines...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/085H02K3/12H02K3/24
CPCH02K15/085H02K3/12H02K3/24H02K3/345H02K15/105H02K15/12H02K15/125
Inventor A·洛贝尔T·施马克
Owner DR ING H C F PORSCHE AG
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