Method for producing combined magnetic pole and invisible magnetic pole driven motor rotor

A technology of invisible magnetic poles and drive motors, applied in the manufacture of motor generators, magnetic circuit rotating parts, stator/rotor bodies, etc., can solve problems such as drop, irreversible demagnetization, and drive motor efficiency reduction, achieving high output power, The effect of compact structure and strong magnetic field strength

CN105896848AInactive Publication Date: 2016-08-24张学义
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-08-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for producing a combined magnetic pole and invisible magnetic pole driven motor rotor, and belongs to the technical field of motors and electric appliances of electric vehicles. A permanent magnet steel is separately embedded into an oblong radial slot and an arc slot of a rotor core; the structure is a rotor magnet bypass structure, and can effectively prevent the permanent magnet steels from producing irreversible demagnetization under the action of armature reaction of impulse current and guarantee the permanent magnet steels not demagnetized; meanwhile, the magnetic field for driving the motor rotor is provided by the permanent magnet steels, so that the magnetic field intensity and the output power are high; and the motor rotor has the characteristics of high efficiency, high power density, compact structure, reliable operation and the like.
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Description

technical field

[0001] The invention provides a method for producing a combined magnetic pole and invisible magnetic pole driven motor rotor, which belongs to the technical field of electric vehicle motors and appliances. Background technique

[0002] At present, most of the production methods of permanent magnet drive motor rotors used in electric vehicles adopt the permanent magnet external embedded structure, such as the existing technology, patent name: brushless DC motor rotor, patent number: ZL200920116549.1, discloses the following technical solutions, Including rotor core, rotating shaft and permanent magnet, the rotor core is composed of punched sheets and connected into one, the rotating shaft is fixedly connected with the rotor core, the outer surface of the rotor core is evenly distributed with an even number of T-shaped wedges, adjacent T Slots are formed between the shaped wedges, and the permanent magnets are correspondingly embedded in the slots. The permanen...

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Embodiment Construction

[0008] The present invention will be further described below in conjunction with accompanying drawing:

[0009] The combined magnetic pole and invisible magnetic pole drive motor rotor production method is characterized in that: punching and cutting the circular rotor punching sheet, the rotor punching sheet is evenly distributed with an even number of rectangular radial grooves with the same shape and size running through the thickness of the rotor punching sheet, The outer edge of the rectangular radial groove is a convex arc, and the arch height of the convex arc is 1mm. There is a 1.5mm disconnected part between the outer end of the rectangular radial groove and the outer circle of the rotor punch. The radial groove is provided with an inner circular arc surface that runs through the thickness of the rotor punching sheet and faces to the outer circle of the rotor punching sheet. The circular arc groove is in the middle of the outer ends of two adjacent rectangular radial gr...