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Novel permanent magnet generator rotor for range extender of electric vehicle

A permanent magnet generator and range extender technology, applied in electric vehicles, motors, vehicle components, etc., can solve the problems of low power factor, affect generator performance, low efficiency, etc., achieve low vibration and noise, and output torque. Low ripple and good stability

Inactive Publication Date: 2012-10-17
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional claw pole generators and square wave generators may have low efficiency or low power factor, which will affect the performance of the generator

Method used

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  • Novel permanent magnet generator rotor for range extender of electric vehicle
  • Novel permanent magnet generator rotor for range extender of electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Combine below figure 1 and figure 2 , the present invention is further described:

[0021] Such as figure 1 As shown, the two ends of the rotor core 3 are equipped with a left baffle 2 and a right baffle 4 respectively, so the permanent magnetic steel 9 will not be thrown out from the rotor core 3 axially. The rotor shaft 1 passes through the inner holes of the left baffle 2, the rotor core 3 and the right baffle 4 in sequence. The rotor shaft 1, the left baffle 2, the rotor iron core 3 and the right baffle 4 are fixed as one, and the stop piece 5 between the right baffle 4 and the lock nut 6 can ensure that the lock nut 6 does not get loose.

[0022] Such as figure 2 As shown, the permanent magnetic steel 9 is built in the magnetic steel hole of the rotor core 3 . Because it is a built-in type, when the generator rotates at a high speed, the permanent magnetic steel 9 can not be thrown out. The permanent magnetic steel 9 and the rotor iron core 3 are fixed with...

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PUM

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Abstract

The invention relates to a novel permanent magnet generator rotor for a range extender of an electric vehicle. The novel permanent magnet generator rotor comprises a rotor core (3) and a rotor shaft (1), and is characterized in that the rotor core (3) is uniformly lined with a plurality of pieces of rectangular strip-type permanent magnet magnetic steel (9) along the inner circumference direction; a plurality of axial bosses (7) are uniformly distributed on the surface of the rotor core (3); and any two pieces of rectangular strip-type permanent magnet magnetic steel (9) are symmetrically arranged on two sides of the axial bosses (7). Because the rotor core is uniformly lined with a plurality of pieces of rectangular strip-type permanent magnet magnetic steel along the inner circumference direction, the generator has salient pole characteristics, the power factor of the system can be adjusted to be close to 1 due to control, and the output of effective power is improved; and therefore, the load characteristic requirements of an electric automobile under various working conditions are met.

Description

technical field [0001] The invention relates to a generator rotor structure, in particular to a novel permanent magnet generator rotor for a range extender of an electric vehicle. Background technique [0002] In an electric vehicle, the generator, as a key component of the range extender of the electric vehicle, forms the auxiliary power system (generator set) of the electric vehicle together with the engine and generator controller, and together with the battery, it forms the vehicle drive power supply system. Since the energy density of the vehicle battery developed at this stage cannot ensure a long mileage of electric vehicles, when the battery energy drops to a certain value, the generator set is started. The generator set is the main power source for driving the motor, and the excess energy is used to charge the battery. ; When the power supply of the generator set is insufficient, the auxiliary energy is provided by the battery, which is manifested as the joint worki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27H02K1/24
CPCY02T10/641Y02T10/64
Inventor 姜艳芬林伟义刘艳王明盛
Owner CHERY AUTOMOBILE CO LTD