High-salient-pole-ratio permanent magnet motor for electric motorcycle
A technology of permanent magnet motor and saliency ratio, which is applied in the field of electric motorcycles, can solve the problems of insufficient motor torque output capacity, low motor efficiency, and oversaturation of magnetic density, and achieves improved magnetic field efficiency, high torque density, and improved convexity Extremely effective
Pending Publication Date: 2021-06-11
台铃科技(江苏)股份有限公司
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Problems solved by technology
[0006] The invention provides a permanent magnet motor with a high salient pole ratio for electric motorcycles, which can solve the problems of high iron consumption, low motor efficiency, and stress concentration due to the oversaturation of the magnetic bridge of the V-shaped groove magnetic bridge, and solve the problems of motor torque output at the same time. Insufficient capacity, insufficient torque at low speeds
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[0029] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the following embodiments are intended to facilitate the understanding of the present invention, but do not limit it in any way.
[0030] In this embodiment, a hub motor with a built-in outer rotor and a high salient pole ratio for a 10-inch motor is taken as an example, as figure 1 As shown, it includes a rotor 1 and a stator 2 , the rotor 1 is sleeved on the outside of the stator, and an air gap 3 is provided between the stator 2 and the rotor 1 . The stator 2 is fixed with the connecting shaft through the fixed bracket 5 .
[0031] Such as figure 2 As shown, the rotor 1 includes a rotor core 10 and a plurality of magnetic steel slot groups evenly arranged on the rotor core 10 in the circumferential direction. In this embodiment, there are altogether 48 magnetic steel slot groups.
[0032] Each magnetic steel slot gro...
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The invention discloses a high-salient-pole-ratio permanent magnet motor for an electric motorcycle. The high-salient-pole-ratio permanent magnet motor comprises a stator and a rotor arranged on the outer side of the stator in a sleeving mode, wherein an air gap is formed between the stator and the rotor, and the stator is fixed to a connecting shaft through a fixing support, the rotor comprises a rotor iron core and a plurality of magnetic steel groove sets evenly arranged on the rotor iron core in the circumferential direction; each magnetic steel groove set is composed of two magnetic steel grooves distributed in a V shape and a linear magnetic steel groove, the large openings of the two magnetic steel grooves distributed in the V shape face the circle center, and the linear magnetic steel groove is formed in the large opening of the V shape; each magnetic steel groove is an axial through groove, a permanent magnet is embedded in each magnetic steel groove, and air gaps exist between the two non-axial end parts of each permanent magnet and the corresponding magnetic steel groove; and the ends, close to the stator, of the two magnetic steel grooves distributed in the V shape are communicated with the air gap, and the ends, away from the stator, of the two magnetic steel grooves are mutually independent. The high-salient-pole-ratio permanent magnet motor can solve the problems of magnetic density supersaturation, high iron loss, low motor efficiency and stress concentration of a V-shaped groove magnetic bridge part.
Description
technical field [0001] The invention belongs to the technical field of electric motorcycles, in particular to a permanent magnet motor with high salient pole ratio for electric motorcycles. Background technique [0002] As new energy electric vehicles enter the public's field of vision, the permanent magnet hub motor has a compact structure and high-efficiency transmission, which is more in line with the development requirements of high efficiency, light weight, and intelligent electric vehicles. [0003] The Chinese patent document with the publication number CN 111725915 A discloses a reluctance hub motor, including a rotor, a stator and a connecting shaft, the stator and the connecting shaft are positioned and fixed in the circumferential direction, the rotor is sleeved on the outside of the stator, and the rotor includes a rim, a housing , The rotor core and the permanent magnet, the housing and the rim are integrated or fixedly connected. The rotor core is made of magne...
Claims
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IPC IPC(8): H02K21/24H02K21/02H02K1/14H02K1/27
CPCH02K21/24H02K21/027H02K1/146H02K1/27H02K2213/03
Inventor 孙木楚
Owner 台铃科技(江苏)股份有限公司
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