Permanent magnet synchronous motor rotor structure for new energy automobile and processing method thereof
A technology for permanent magnet synchronous motors and new energy vehicles, which is applied in the direction of synchronous machines, synchronous machine parts, magnetic circuit shape/style/structure, etc. It can solve problems such as large vibration force, reduce noise, improve NVH performance, The effect of simple structure
Pending Publication Date: 2020-05-19
安徽瑞智驱动科技有限公司
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Problems solved by technology
In addition, the radial electromagnetic force of the 48th order component of the rotational speed frequency can cause the 0th order vibration in space, which may generate a large vibration force
In this way, it will cause more obvious 48th-order noise during the operation of the motor
Method used
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[0028] In the following, referring to the drawings, through the description of the embodiments, the specific embodiments of the present invention such as the shape and structure of the various components involved, the mutual position and connection relationship between the various parts, the function and working principle of each part, etc. Detailed description:
[0029] As attached figure 1 -Attached Picture 9 As shown, the present invention is a permanent magnet synchronous motor rotor structure for a new energy vehicle. It includes a rotor body 1. The rotor body 1 is provided with a middle opening 2 axially penetrating the rotor body 1, and the rotor body 1 is pressed along the axial direction. Multiple sets of magnet parts 3 are arranged in the gap, each set of magnet parts 3 includes two magnet slots 4 arranged in a V shape, a hole 5 is arranged between the two magnet slots 4 of each group of magnet parts 3, and the outer surface of the rotor body 1 A plurality of sets of ...
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The invention provides a permanent magnet synchronous motor rotor structure for a new energy automobile, which is applied to the technical field of new energy automobile motors. The invention furtherrelates to a processing method of the permanent magnet synchronous motor rotor structure for the new energy automobile. A rotor body (1) of the permanent magnet synchronous motor rotor structure for the new energy automobile is provided with a plurality of groups of magnet parts (3); each group of magnet parts (3) comprises a magnet groove (4); an outer surface of the rotor body (1) is provided with a plurality of groups of groove assemblies (6); and two inclined grooves (11) of each group of groove components (6) are arranged between the two magnet grooves (4) of the corresponding group of magnet parts (3).In the permanent magnet synchronous motor rotor structure for the new energy automobile, aniron core area of amain magnetic circuit is not changed, and acirculation path of a main magnetic flux is changedso that a harmonic content rate of air gap flux density is effectively weakened, anoise and an order noise caused by avibration force are reduced, and NVH performance of adriving motor is comprehensively improved.
Description
Technical field [0001] The invention belongs to the technical field of new energy automobile motors, more specifically, it relates to a permanent magnet synchronous motor rotor structure for a new energy automobile. The invention also relates to a method for processing a permanent magnet synchronous motor rotor structure for a new energy automobile. Background technique [0002] At present, the NVH problem in the new energy automobile industry is relatively obvious. As the main noise source, the drive motor is the main component that needs to be improved. Different from the low-frequency noise of traditional cars, the high-frequency noise in the drive motor can cause extreme discomfort. Among them, the order noise related to the number of pole slots of the drive motor is more prominent. In EV motors that require high output density, generally a V-shaped magnet embedded rotor is generally used. The rotor of this method is aimed at the circular rotor core to prevent short-circuit ...
Claims
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IPC IPC(8): H02K1/27H02K1/28H02K15/03H02K21/02
CPCH02K1/2766H02K1/28H02K15/03H02K21/028H02K2213/03H02K2201/03
Inventor 申帅龙德永翔平程麒
Owner 安徽瑞智驱动科技有限公司