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Rotor structure, permanent magnet auxiliary synchronous reluctance motor and electric automobile

A rotor structure and permanent magnet technology, applied in electric vehicles, motors, electric components, etc., can solve problems such as low motor efficiency, and achieve the effects of increasing magnetic flux, reducing electromagnetic noise, and increasing efficiency

Pending Publication Date: 2018-10-19
GREE ELECTRIC APPLIANCES INC +1
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  • Abstract
  • Description
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Problems solved by technology

[0003] The main purpose of the present invention is to provide a rotor structure, permanent magnet assisted synchronous reluctance motor and electric vehicle, to solve the problem of low motor efficiency in the prior art

Method used

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  • Rotor structure, permanent magnet auxiliary synchronous reluctance motor and electric automobile
  • Rotor structure, permanent magnet auxiliary synchronous reluctance motor and electric automobile
  • Rotor structure, permanent magnet auxiliary synchronous reluctance motor and electric automobile

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Embodiment Construction

[0033] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.

[0034] It should be noted that the terms used here are only for describing specific implementations, and are not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate There are features, steps, operations, devices, components, and / or combinations thereof.

[0035] It should be noted that the terms "first" and "second" in the description, claims and drawings of the application are used to distingui...

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Abstract

The invention provides a rotor structure, a permanent magnet auxiliary synchronous reluctance motor and an electric automobile. The rotor structure includes a rotor body, a plurality of permanent magnet groove groups are arranged on the rotor body, the plurality of permanent magnet groove groups are arranged at intervals in a circumferential direction of the rotor body, the plurality of permanentmagnet groove groups include a first permanent magnet groove group, the first permanent magnet groove group includes a plurality of permanent magnet grooves sequentially arranged outwards in a radialdirection of the rotor body, and a cross section of part of groove segments of at least one permanent magnet groove among the plurality of permanent magnet grooves in the radial direction of the rotorbody is S-shaped. The rotor structure adopting the scheme of the invention effectively improves the magnetic flux generated by permanent magnets of the rotor structure, increases the electromagnetictorque under unit current of a motor with the rotor structure, and increases the efficiency of the motor.

Description

Technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a rotor structure, a permanent magnet auxiliary synchronous reluctance motor and an electric vehicle. Background technique [0002] Electric vehicles have the characteristics of energy saving and environmental protection, and have been developed rapidly. In order to realize the functions of high power density and high efficiency of the existing electric vehicle drive motors, more and more motors use high-performance rare earth permanent magnet motors. Rare earth permanent magnet motors can achieve high efficiency and high power density, mainly relying on high-performance rare earth permanent magnets. At present, neodymium iron boron rare earth permanent magnets are the most widely used. However, rare earth is a non-renewable resource, and the price is relatively high, and the price of rare earth fluctuates greatly, resulting in higher production costs of electric vehicle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27
CPCH02K1/2706Y02T10/64
Inventor 胡余生陈彬肖勇卢素华童童
Owner GREE ELECTRIC APPLIANCES INC
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