Hydrogen resistant motor based on rare earth permanent magnet

A technology of rare earth permanent magnets and hydrogen resistance, which is applied in the manufacture of motor generators, magnetic circuits characterized by magnetic materials, magnetic circuits, etc., can solve the problems of not improving the hydrogen resistance of rare earth permanent magnets, and achieve good hydrogen resistance , improve hydrogen resistance and service life, and promote densification

Active Publication Date: 2022-01-28
南京安德海睿智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this invention improves the coercive force at room temperature and high-temperature magnetic properties, it does not improve the hydrogen resistance of rare earth permanent magnets.

Method used

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  • Hydrogen resistant motor based on rare earth permanent magnet
  • Hydrogen resistant motor based on rare earth permanent magnet
  • Hydrogen resistant motor based on rare earth permanent magnet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 2 and image 3 As shown, the hydrogen-resistant motor based on rare-earth permanent magnets includes a motor stator 10, a motor rotor 20, and a rare-earth permanent magnet 11. During the movement of the hydrogen-resistant motor, the motor rotor 20 is in motion, and the motor rotor 20 is in a fixed state. Motor stator 10. The magnetic field interaction between the motor stator 10 and the motor rotor 20 generates two kinds of electromagnetic forces acting perpendicular to each other in the plane, thereby realizing the motion of the motor.

[0042]The motor stator 10 is provided with a motor rotor 20, and the motor stator 10 or the motor rotor 20 is provided with a rare earth permanent magnet 11; as figure 2 As shown, the motor rotor 20 is provided with rare earth permanent magnets 11, and the rare earth permanent magnets 11 are evenly distributed on the motor rotor 20; as image 3 As shown, the motor stator 10 is provided with rare earth permanent magn...

Embodiment 2

[0076] Basic content of the present invention is with embodiment 1, and its difference is: the preparation method of hydrogen-resistant rare earth permanent magnet is as follows:

[0077] (1) Smelting: According to the ingredients, the ingredients are smelted in the smelting furnace to obtain Sm 2 (CoCuFeZr) 17 The mass percent content of each element of the magnet is as follows: 50% Co, 23% Sm, 5% Cu, 20% Fe, 1% Zr, 1% impurity; and an ingot is obtained.

[0078] (2) Milling: breaking the ingot and milling to obtain permanent magnet powder, wherein the permanent magnet powder is controlled so that the particle size is controlled at 1 μm-10 μm, and the particle size distribution is such that the mass percentage of 3 μm-5 μm particles is greater than 80%; The powder method can be jet milling, by adding 0.1-3.5mL of antioxidant to every kilogram of permanent magnet powder in the process of jet milling;

[0079] (3) Compression molding: stamping the permanent magnet powder to o...

Embodiment 3

[0092] Basic content of the present invention is with embodiment 1, and its difference is: the preparation method of hydrogen-resistant rare earth permanent magnet is as follows:

[0093] (1) Smelting: According to the ingredients, the ingredients are smelted in the smelting furnace to obtain Sm 2 (CoCuFeZr) 17 The mass percentage of each element of the magnet is as follows: 55% Co, 15% Sm, 6% Cu, 18% Fe, 4% Zr, 2% impurities; and an ingot is obtained.

[0094] (2) Milling: breaking the ingot and milling to obtain permanent magnet powder, wherein the permanent magnet powder is controlled so that the particle size is controlled at 1 μm-10 μm, and the particle size distribution is such that the mass percentage of 3 μm-5 μm particles is greater than 80%; The powder method can be jet milling, by adding 3.5mL of antioxidant to every kilogram of permanent magnet powder in the process of jet milling;

[0095] (3) Compression molding: stamping the permanent magnet powder to obtain a...

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Abstract

The hydrogen-resistant motor based on rare earth permanent magnets of the present invention belongs to the technical field of permanent magnet motors; the present invention includes a motor stator, a motor rotor and a rare earth permanent magnet, the motor stator is provided with a motor rotor, and the motor stator and the motor rotor are provided with There are rare earth permanent magnets; the rare earth permanent magnets are Sm 2 (CoCuFeZr) 17 For the magnet, the mass percentage of Sm is m, the sum of the mass percentages of Co and Fe is n, and n>3m. The present invention makes the rare earth permanent magnet Sm 2 (CoCuFeZr) 17 Magnet densification, combined with heat treatment, makes the surface of rare earth permanent magnets more dense and stable, so as to reduce the path of hydrogen atoms entering the grain boundary from the surface of the material, and improve the hydrogen resistance of rare earth permanent magnets, so as to prevent hydrogen gas from entering the magnet.

Description

technical field [0001] The invention relates to the technical field of permanent magnet motors, in particular to a hydrogen-resistant motor based on rare earth permanent magnets. Background technique [0002] The rare earth permanent magnet motor is a new type of permanent magnet motor that appeared in the early 1970s. The rare earth permanent magnet material has excellent magnetic properties. After magnetization, it can establish a strong permanent magnetic field without external energy, which is used to replace the traditional motor. The rare earth permanent magnet motor made of the electric excitation field not only has high efficiency, but also has a simple structure and reliable operation, and can also be small in size and light in weight. It can not only achieve high performance unmatched by traditional electric excitation motors, but also can be made into special motors that can meet specific operating requirements, such as elevator traction motors, special motors for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/02H02K1/278H02K1/17H02K15/03B22F3/02B22F3/10B22F3/24B22F3/26C22C1/04C22C19/07C22C30/00
CPCH02K1/02H02K1/27H02K1/17H02K15/03C22C30/00C22C19/07C22C1/0433B22F3/02B22F3/10B22F3/24B22F3/26H02K2213/03B22F2003/248C22C2202/02
Inventor 不公告发明人
Owner 南京安德海睿智能科技有限公司
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