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Electric automobile, permanent magnet motor and hybrid rotor punching sheet thereof

A hybrid rotor, permanent magnet motor technology, applied in electric vehicles, motors, electric components, etc., can solve problems such as increased manufacturing costs, and achieve the effect of reducing costs and improving core competitiveness

Inactive Publication Date: 2020-09-18
CSR ZHUZHOU ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the continuous increase in the price of rare earth materials, the manufacturing cost continues to increase

Method used

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  • Electric automobile, permanent magnet motor and hybrid rotor punching sheet thereof
  • Electric automobile, permanent magnet motor and hybrid rotor punching sheet thereof
  • Electric automobile, permanent magnet motor and hybrid rotor punching sheet thereof

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Embodiment Construction

[0024] The invention discloses a hybrid rotor stamping sheet of a permanent magnet motor to reduce the cost. In addition, the invention also discloses a permanent magnet motor and an electric vehicle with the hybrid rotor stamping.

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] Such as Figure 1-Figure 3 As shown, the present application also discloses a hybrid rotor stamping of a permanent magnet motor, which includes: a stamping body 4 with a magnetic steel groove 3, and ferrite magnetic steel ...

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Abstract

The invention discloses an electric automobile, a permanent magnet motor and a hybrid rotor punching sheet thereof. The hybrid rotor punching sheet is characterized by comprising a punching sheet body(4) provided with magnetic steel grooves (3), a ferrite magnetic steel (1) arranged in the magnetic steel groove (3), and neodymium iron boron magnetic steel (2) arranged in the magnetic steel groove(3) and located at the end of the ferrite magnetic steel (1). At the position of the area, where demagnetization is likely to happen, of the edge of the ferrite magnetic steel, demagnetization is notlikely to happen at the corners by means of assistance of the neodymium iron boron magnetic steel. Furthermore, the rotor punching sheet mainly selects a design mode of ferrite magnetic steel, and asmall amount of neodymium iron boron magnetic steel is adopted for assisting magnetism, so that the cost is reduced, and the core competitiveness of the product is improved.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an electric vehicle, a permanent magnet motor and a hybrid rotor punching sheet thereof. Background technique [0002] Existing motors mainly include three types: permanent magnet motors, AC asynchronous motors and switched reluctance motors. Permanent magnet synchronous motors are favored in the field of electric vehicles because of their advantages such as high power density, wide efficient area, and small size. Therefore, permanent magnet synchronous motors are widely used in the field of new energy vehicles. [0003] At present, rare earth permanent magnet materials represented by NdFeB have become the most widely used type of rare earth permanent magnet materials because of their excellent magnetic properties. However, due to the continuous increase in the price of rare earth materials, the manufacturing cost continues to increase. Make rare earth or no rare eart...

Claims

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Application Information

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IPC IPC(8): H02K1/27H02K1/28H02K5/24
CPCH02K1/276H02K1/28H02K5/24H02K2213/03Y02T10/64
Inventor 于冰唐小春董江东贾梦凡许时杰关磊黄绍枝
Owner CSR ZHUZHOU ELECTRIC CO LTD
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