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Rare-earth-free permanent magnet motor with short magnetic circuit for electric vehicles

A technology for electric vehicles and permanent magnet motors, applied in electric vehicles, motors, magnetic circuits, etc., can solve problems such as not yet retrieved, and achieve the effects of high slot full rate, reduced iron loss, and reduced flux linkage length.

Active Publication Date: 2021-01-19
佛山市顺德龙佳微电机实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] At present, the applicant has not yet retrieved the above-mentioned technologies involved in the present invention through searching at home and abroad.

Method used

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  • Rare-earth-free permanent magnet motor with short magnetic circuit for electric vehicles
  • Rare-earth-free permanent magnet motor with short magnetic circuit for electric vehicles
  • Rare-earth-free permanent magnet motor with short magnetic circuit for electric vehicles

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Embodiment Construction

[0029] The invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] figure 1 It is a structural schematic diagram of the electric vehicle short magnetic circuit non-rare earth permanent magnet motor of the present invention. A minus sign indicates the opposite direction of winding.

[0031] Electric vehicle short magnetic circuit rare-earth-free permanent magnet motor includes convex lens core, non-magnetic rotor core, stator core, excitation winding, armature winding, screws, pressing pieces and shaft;

[0032] There are 12 stator poles of equal width inside the stator core;

[0033] The non-magnetically conductive rotor core is located inside the stator core and fixed on the shaft; the non-magnetically conductive rotor core has 7 arc-shaped grooves; the circular-arc-shaped grooves are embedded with a magnetically conductive convex lens-shaped core, which is made of silicon steel sheets There is a through hole in the middl...

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Abstract

The invention provides an electric vehicle short magnetic circuit rare earth-free permanent magnet motor, and belongs to the technical field of automobile motors. the motor comprises a convex lens-shaped iron core, a non-magnetically conductive rotor iron core, a stator iron core, an excitation winding, an armature winding, a screw, a tablet and a shaft, wherein the stator iron core has 12 statorpoles of equal width on the inner side thereof; The non-magnetic conductive rotor core is located on the inner side of the stator core and fixed on the shaft; The non-permeable rotor core has seven circular arc grooves. A convex lens-shaped iron core capable of conducting magnetic field is embedded in the circular arc-shaped groove, and the excitation winding and the armature winding are all centralized short-moment windings; an excitation winding is wound on every other stator pole of the stator iron core, and the armature winding is wound on the other stator poles. The technology of the invention is a short magnetic circuit motor, and the iron loss is small under the same magnetic density; the rare earth permanent magnet material is not used to save rare earth resources.

Description

technical field [0001] The invention relates to a rare-earth-free permanent magnet motor with a short magnetic circuit for an electric vehicle, belonging to the technical field of automobile motors. Background technique [0002] Energy saving and environmental protection are the eternal pursuit goals of automobiles. Today's social environment is deteriorating and energy shortages are becoming more and more prominent. The whole society's requirements for energy saving and environmental protection are promoting the development of new energy vehicles. As a representative of new energy vehicles, electric vehicles have gradually become the main direction of development. Drive motor is one of the key technologies to be studied in electric vehicles. The improvement of motor efficiency can increase the mileage of the car, reduce the failure caused by motor heating and prolong the life. The loss of the motor is mainly iron loss and copper loss. The iron loss is mainly generated b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/22H02K1/14H02K3/04
CPCH02K1/146H02K1/22H02K3/04Y02T10/64
Inventor 史立伟高玲余金焰张存杰邢春辉陈伟
Owner 佛山市顺德龙佳微电机实业有限公司
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