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Sintered magnet, motor, use of sintered magnet for motor, and manufacturing method of sintered magnet

A technology for sintering magnets and shells, which is applied in the manufacture of inductors/transformers/magnets, magnets, magnetic objects, etc., and can solve the problems of low time-consuming and cost-effective design, high efficiency, etc.

Active Publication Date: 2022-03-18
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are time-consuming and / or cost-effective and impose several limitations on the design possibilities
Therefore, these methods are not currently implemented industrially

Method used

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  • Sintered magnet, motor, use of sintered magnet for motor, and manufacturing method of sintered magnet
  • Sintered magnet, motor, use of sintered magnet for motor, and manufacturing method of sintered magnet
  • Sintered magnet, motor, use of sintered magnet for motor, and manufacturing method of sintered magnet

Examples

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Embodiment Construction

[0018] Reference will now be made in detail to various embodiments, one or more examples of which are illustrated in the figures. Each example is provided by way of illustration, not limitation. For example, features illustrated or described as part of one embodiment can be used on or in conjunction with any other embodiment to yield a further embodiment. The present disclosure is intended to cover such modifications and variations.

[0019] Before describing individual embodiments, some general definitions and aspects of the invention are described first, each of which may be combined with any other aspect or embodiment.

[0020] Electric machines as used herein include machines that convert, generate or consume electrical energy. For example, the term electric machine includes electromechanical energy converters such as transformers, electric motors, generators or electromagnetic actuators. Furthermore, an electric machine as used herein can be in the form of a rotary mac...

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Abstract

A sintered magnet (1), for example for an electrical machine, comprising a core part (3), a housing part (2) arranged at an outer part of the sintered magnet, and at least partly arranged on the core part Diffusion section (4) between housing section. The shell part (2) has a coercive force at least 30 kA / m greater than the coercive force of the core part (3). In the diffusion part (4), the coercive force is not less than the coercive force of the core part (3) and not greater than the coercive force of the shell part (2), and the value of the coercive force is obtained from the core part (3) It gradually increases towards the housing part (2). The thickness of the core part (3) is not less than 1 mm, and the total thickness of the shell part (2) and the diffuser part (4) is at least 5 mm.

Description

technical field [0001] Embodiments of the present disclosure relate to a sintered magnet, a motor, a use of the sintered magnet for a motor, and a method of manufacturing the sintered magnet. Background technique [0002] Magnetic materials for applications in electrical machines such as high torque motors and wind turbines need to meet many requirements such as withstand operating temperatures ranging from 20°C to 300°C or even above 300°C, exhibit high coercivity and high remanence. However, such operating temperatures greatly weaken the properties of the magnetic material and can even cause demagnetization. For example, the resistance to demagnetization (coercive force) of magnetic materials decreases with increasing temperature. One possible approach to this problem is to choose magnetic materials that maintain high coercivity and high remanence even when subjected to temperatures ranging from 20°C to 300°C. Typical examples of such materials are rare earth based magn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/02H01F1/08H02K15/02
CPCH01F1/086H01F7/021H01F41/0266H02K15/02H02K1/02Y02E10/72H01F7/02
Inventor E.佩里戈D.D.特雷梅林J.雅西莫维奇N.赞特R.西蒙L.赫尔曼F.格罗伊特
Owner ABB (SCHWEIZ) AG