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Method for recycling at least one magnet of an electric machine

A magnet and mechanical technology, applied in the field of reusing at least one magnet of a motor, can solve problems such as loss of raw materials, recycling of permanent magnets, etc.

Inactive Publication Date: 2017-12-15
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the recovery of permanent magnets from motor vehicles has not yet been carried out, so the permanent magnets are sent to the crushing process along with other parts of the motor vehicle
Here metal parts are melted to recover steel and aluminum, so valuable raw materials are lost in the permanent magnets

Method used

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  • Method for recycling at least one magnet of an electric machine

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Embodiment Construction

[0031] figure 1 A part of the electric machine 1 , ie a component 2 of the electric machine 1 , is shown in cross section. The assembly 2 has at least one magnet 3 , in the exemplary embodiment shown here a plurality of magnets 3 . The magnet 3 is present, for example, in the form of a permanent magnet. The magnet 3 is arranged in or held by the laminated core 4 of the assembly 2 . The magnet 3 is connected to the shaft 5 in a relatively non-rotatable manner via the laminate 4 . The shaft 5 is used to mount the assembly 2 in the electric machine 1 or in the housing of the electric machine 1 rotatably about the axis of rotation 6 . The fastening of the magnets 3 to the laminated core 4 can be effected by means of a magnet adhesive.

[0032] In order to reuse the magnets 3 , first the subassembly 2 is removed from the electric machine 1 , in particular together with the shaft 5 . Provision can then be made to mechanically detach the shaft 5 from the assembly 2 , for example...

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PUM

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Abstract

A method for recycling at least one magnet 3 of an electric machine 1. A subassembly 2 having the magnet 3 is disassembled from the electric machine1. In the process, the following steps are provided: carrying out a first thermal treatment of the subassembly 2 at a first temperature, mechanical separation of the magnet 3 from the subassembly 2, and carrying out a second thermal treatment of the magnet 3 at a second temperature, which is higher than the first temperature, for debinding and / or cleaning of the magnet 3.

Description

technical field [0001] The invention relates to a method for recycling at least one magnet of an electric machine, wherein a component with the magnet is removed from the electric machine. Background technique [0002] The magnet forms part of an electric machine, which is for example associated with a motor vehicle. An electric machine, in particular a traction machine of a motor vehicle. The magnet is present in the form of a permanent magnet or at least has one such permanent magnet. Permanent magnets are made of magnetic material, especially of hard magnetic material. This material is the main component of the motor. Its magnetic properties decisively define the effective power of the motor. [0003] Permanent magnets are present, for example, in the form of sintered neodymium iron boron magnets. Compared with other magnets, NdFeB magnets have a very high magnetic energy product. Such permanent magnets are therefore increasingly used in applications with high deman...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/02H01F1/057C22B59/00
CPCC22B59/00H01F1/057H01F41/0253H01F7/021H02K1/2773H02K15/0006B32B43/006
Inventor T·门克L·齐泽勒A·纳格尔S·施魏泽尔
Owner AUDI AG