Magnetic steel sheet and processing method thereof, rotor, motor, and electric vehicle

A magnetic steel sheet and rotor technology, which is applied in electric vehicles, magnetic circuit rotating parts, motors, etc., can solve the problems of low effective utilization of magnetic steel, large magnetic flux leakage, and large motor torque fluctuations, and achieve improved gas Gap flux density, reduction of flux leakage, and improvement of interpole flux leakage

Inactive Publication Date: 2016-08-03
ZHEJIANG LUYUAN ELECTRIC VEHICLE
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  • Abstract
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  • Application Information

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Problems solved by technology

The magnetic steel arranged in this way has large magnetic flux leakage, low effec

Method used

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  • Magnetic steel sheet and processing method thereof, rotor, motor, and electric vehicle
  • Magnetic steel sheet and processing method thereof, rotor, motor, and electric vehicle
  • Magnetic steel sheet and processing method thereof, rotor, motor, and electric vehicle

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Embodiment Construction

[0048] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0049] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0050] Refer below Figure 1 to Figure 8 The magnetic steel sheet 1 and its processing method, rotor, motor and electric vehicle according to some embodiments of the present invention are described....

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Abstract

The invention provides a magnetic steel sheet and a processing method thereof, a rotor, a motor, and an electric vehicle. The contour of the cross section of the magnetic steel sheet comprises a first contour line and a second contour line which are connected end to end. The first contour line comprises a first edge, a second edge and a third edge which are connected in sequence, wherein the first edge, the second edge and the second contour line are on the same side of the second edge, an obtuse angle is formed between the connection line of the two endpoints of the first edge and the connection line of the two endpoints of the second edge, and an obtuse angle is formed between the connection line of the two endpoints of the third edge and the connection line of the two endpoints of the second edge. According to the magnetic steel sheet provided by the invention, by changing the shape of the magnetic steel sheet, the contact area between adjacent magnetic steel sheets in a motor is reduced, the inter-electrode leakage flux of motors is reduced, and the utilization rate of the magnetic steel sheet is improved. The air gap flux density of motors is improved, the torque ripple and noise of motors are reduced, and users feel more comfortable in use. Moreover, the cost of the magnetic steel sheet is reduced, and rare earth resources are saved.

Description

technical field [0001] The present invention relates to the technical field of electric vehicles, in particular to a magnetic steel sheet and a processing method thereof, a rotor including the above-mentioned magnetic steel sheet, a motor including the above-mentioned rotor, and an electric vehicle including the above-mentioned motor. Background technique [0002] At present, the permanent magnet motors used in the market for electric vehicles basically use rectangular magnetic steel sheets, and multiple magnetic steel sheets are neatly arranged on the circumferential surface of the rim, which can be arranged in a single piece or multi-piece butt joint. arrangement. The magnetic steels arranged in this way have large magnetic flux leakage, low effective utilization of the magnetic steels, and large torque fluctuations of the motor. Contents of the invention [0003] In order to solve at least one of the above technical problems, the first object of the present invention i...

Claims

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Application Information

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IPC IPC(8): H02K1/22H02K15/03H02K1/27
CPCH02K1/22H02K1/2786H02K15/03Y02T10/64
Inventor 倪捷吴启皇朱锋霖
Owner ZHEJIANG LUYUAN ELECTRIC VEHICLE
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