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Magnet and its manufacturing method

A technology of electromagnet and yoke, which is applied in the field of stator core and its manufacturing, can solve the problems of high manufacturing cost, breaking strength and deformation limitation

Active Publication Date: 2021-08-10
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When bending the strip into a helical shape, in particular over its width, high production costs are incurred, and the bending radius is limited during the production of the strip helix due to fracture strength and deformation

Method used

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  • Magnet and its manufacturing method
  • Magnet and its manufacturing method
  • Magnet and its manufacturing method

Examples

Experimental program
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Effect test

Embodiment Construction

[0037] Figure 1A A coil assembly S is shown, in which a first conductor 2 with a first diameter or a plurality of first conductors 2 with the same first diameter is wound on the winding body 1 in the form of a plurality of individual conductor turns 3 . Figure 1B shown in Figure 1A The situation of the manufactured coil assembly S after its sealing. The first conductor 2 is deformed in its cross-section after sealing. The interspaces 4 between the individual wire turns 3 that were present before sealing can be completely or partially reduced or disappeared after sealing. By sealing the continuous element 10, said element can be used as a magnet for use as a mechanical component in an electric machine.

[0038] Figure 2A A further coil set S' is shown, in which a first conductor 2 and a second conductor 5 having a different diameter are wound onto the winding body ( 1 ). Here, the second diameter of the second wire 5 is smaller than the first diameter. Figure 2B shown ...

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Abstract

The invention relates to a method for manufacturing an electromagnet (10) for a mechanical assembly of an electrical machine, in particular a yoke of a stator or rotor, said method having the following steps: a) forming a coil set (S, S) with a winding ') in the form of at least one layer onto the winding body (1), said winding having at least one wire (2) made of soft magnetic material; b) sealing said winding such that said at least one wire (2) ) are deformed in such a way that the turns are at least partially connected to one another in a form-fitting or material-fitting manner in order to obtain the magnet ( 10 ).

Description

technical field [0001] The present invention generally relates to a magnet for a mechanical assembly of an electric machine and a method of manufacturing the same. In particular, the invention relates to a stator, in particular a stator core, for the construction of an electric machine, in particular an electric motor, and a method for its production. Background technique [0002] Many different types of electric machines and correspondingly many different variants of these types of mechanical assemblies are known. A permanent magnet motor with an annular stator back iron is disclosed in document US 2008 / 0181292 A1. The stator core consists of a cylindrical ring made of iron. The ring is formed by a continuous helix with rolled up strips having a substantially rectangular cross-section. The bending of the strip into a helical shape, in particular over its width, entails high production costs, and the bending radius is limited during the production of the strip helix due t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/04H02K15/00
CPCH02K15/0068H02K15/0435H02K1/02H02K15/022
Inventor T.卢克斯S.保利
Owner ROBERT BOSCH GMBH