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Fixing of the permanent magnets by means of a frame

A permanent magnet and fixed device technology, applied in the direction of magnetic circuit, magnetic circuit static parts, magnetic circuit rotating parts, etc., can solve problems such as magnetic flux loss, and achieve the effect of preventing corrosion

Inactive Publication Date: 2017-11-21
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this method, however, it is possible that the permanent magnets are demagnetized during the filling of the plastic due to the thermal load and thus generate flux losses.

Method used

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  • Fixing of the permanent magnets by means of a frame
  • Fixing of the permanent magnets by means of a frame
  • Fixing of the permanent magnets by means of a frame

Examples

Experimental program
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Embodiment Construction

[0053] FIG. 1 accordingly shows, as already described above, an electrical machine 1 according to the prior art with a rotor 12 and a stator 11 , wherein the electrical machine 1 of FIG. 1( a ) has a magnetization in a direction 22 radial to the rotor 12 permanent magnet 3 , and wherein the motor 1 of FIG. 1( b ) has the permanent magnet 3 magnetized along the tangential direction 23 of the rotor 12 .

[0054] FIG. 2( a ) shows a section through a rotor 12 for an electric machine 1 , in which a permanent magnet arrangement 30 according to the invention is arranged (see FIG. 2( e )).

[0055] The rotor 12 has a base body 121 which is arranged concentrically around the rotor axis 2 and which mostly contains iron. The base body 121 is produced from one or more lamination stacks, for example from stamped sheet metal, or from a solid body. A through-hole 122 is provided in the center of the base body 121 , in which the rotor shaft 20 is arranged, the base body 121 extending concen...

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Abstract

The invention relates to the fixing of permanent magnets by means of a frame. A permanent magnet arrangement for an electric machine has a non-magnetized permanent magnet and a clamping device arranged on the permanent magnet in a materially bonded manner. Furthermore, the invention relates to a rotor or a stator of an electrical machine having a permanent magnet arrangement according to the invention. Furthermore, the invention relates to an electric machine with such a rotor or stator. Furthermore, the invention relates to a method for producing a rotor or a stator for an electrical machine, in particular having a permanent magnet arrangement according to the invention, wherein clamping means are arranged on the permanent magnets; A permanent magnet arrangement constituted by a tightening device is inserted into the interspace of the rotor or stator along an insertion direction; and wherein the permanent magnet is magnetized before or after the permanent magnet arrangement is inserted into the interspace.

Description

technical field [0001] The invention relates to a permanent magnet arrangement for a rotor or stator of an electrical machine with non-magnetized permanent magnets and clamping means. Furthermore, the invention relates to the rotor or the stator of the electric machine, the electric machine and a method for producing the rotor or the stator for the electric machine. Background technique [0002] The electric machine is, for example, an electric motor, a starter, a generator or an auxiliary drive, such as an actuating drive for a motor vehicle. For such electric machines it is known to equip the rotor or the stator for generating the electromagnetic field with permanent magnets. The permanent magnets are embedded in the rotor or the base body of the rotor. [0003] FIG. 1 shows in (a) and (b) a section through such an electric machine 1 according to the prior art with permanent magnets arranged in the rotor. The electric machine accordingly has a stator 11 with a large num...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/28H02K1/27H02K1/17H02K15/03
CPCH02K15/03H02K1/276H02K1/2766H02K1/2773
Inventor C.迈耶M.策尼科夫M.贝伊尔S.埃文斯A.埃韦尔特O.克莱门蒂斯
Owner ROBERT BOSCH GMBH