Electric automobile electromagnetic and built-in combined radial permanent magnet driving motor
An electric vehicle, permanent magnet drive technology, applied in the direction of electric vehicles, electric components, motors, etc., can solve the problems of drive motor efficiency reduction, power, torque reduction, irreversible demagnetization, etc., and achieve the effect of less magnetic flux leakage and high efficiency
Inactive Publication Date: 2016-08-31
SHANDONG UNIV OF TECH
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Problems solved by technology
[0002] At present, the rotors of the permanent magnet drive motors used in electric vehicles mostly 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 the rotor Iron core, rotating shaft and permanent magnet. The rotor iron core is composed of punched sheets and connected together. The rotating shaft and the rotor iron core are fixedly connected. There are even numbers of T-shaped wedges evenly distributed on the outer surface of the rotor iron core. Adjacent T-shaped wedges Slots are formed between the blocks, and the permanent magnets are correspondingly embedded in the slots. The permanent magnets of the rotor with this structure directly face the air gap. Under the action of the armature reaction of the impact current, irreversible demagnetization may occur. Once the permanent magnets form irreversible demagnetization, The efficiency of the driving motor is reduced, and the power and torque drop rapidly, and its performance needs to be further improved
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[0012] The present invention will be further described below in conjunction with accompanying drawing:
[0013] The electric vehicle electromagnetic and built-in combined radial permanent magnet drive motor is composed of a front end cover 8, a rear end cover 1, a casing 3, a hybrid excitation rotor, and a stator 4. It is characterized in that: the hybrid excitation rotor consists of a salient pole electric excitation rotor and a built-in Combined radial permanent magnet rotor;
[0014] The built-in combined radial permanent magnet rotor is composed of the shaft 2, the first rectangular permanent magnet steel 5, the second rectangular permanent magnet steel 6, and the rotor core 7. There are an even number of T-shaped salient poles evenly distributed on the rotor core 7. The outer sides of all T-shaped salient pole transverse parts are circular arcs and on the same circle, and the inner sides of all T-shaped salient pole transverse parts are straight lines and tangent to the s...
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The invention provides an electric automobile electromagnetic and built-in combined radial permanent magnet driving motor, belonging to the automobile motor electric appliance technical field, and comprises a front end cover, a rear end cover, a casing, a rotor and a stator; rectangular permanent magnet steels are respectively installed in a first rectangular notch and a second rectangular notch of rotor iron core T-shaped salient poles; electro-magnetic coils wind the T-shaped salient poles; a magnetic field in driving motor air gaps is provided by the permanent magnet steels and the electro-magnetic coils; a generated magnetic field directly faces air gaps, leakage flux is less and efficiency is high.
Description
technical field [0001] The invention provides an electric vehicle electromagnetic and built-in combined radial permanent magnet drive motor, which belongs to the technical field of electric vehicle motors and appliances. Background technique [0002] At present, the rotors of the permanent magnet drive motors used in electric vehicles mostly 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 the rotor Iron core, rotating shaft and permanent magnet. The rotor iron core is composed of punched sheets and connected together. The rotating shaft and the rotor iron core are fixedly connected. There are even numbers of T-shaped wedges evenly distributed on the outer surface of the rotor iron core. Adjacent T-shaped wedges Slots are formed between the blocks, and the permanent magnets are correspondingly embedded in the s...
Claims
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IPC IPC(8): H02K21/14H02K21/04H02K1/27H02K1/24
CPCH02K1/24H02K1/2766H02K21/044H02K21/14Y02T10/64
Inventor 刘从臻张学义徐进彬
Owner SHANDONG UNIV OF TECH