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EPS brushless motor rotor core structure

A rotor iron core, brushless motor technology, applied in the magnetic circuit shape/style/structure, electrical components, electromechanical devices, etc., can solve the problem of low moment of inertia, reduce the moment of inertia, reduce the harmonic content of back EMF, The effect of reducing the cost of the motor

Pending Publication Date: 2018-11-27
NIDEC KAIYU AUTO ELECTRIC JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In conventional motor design, low moment of inertia and light weight are a pair of contradictions, which put forward higher requirements for EPS brushless motors. However, in the currently used EPS motors, only one index is considered, or A trade-off between the two

Method used

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  • EPS brushless motor rotor core structure
  • EPS brushless motor rotor core structure
  • EPS brushless motor rotor core structure

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0015] Below in conjunction with embodiment the invention is further described.

[0016] like figure 1 , 2 , 3, the EPS brushless motor rotor core structure provided by this embodiment includes a rotor punch 1, and a plurality of rotor punches 1 are laminated to form a rotor core, which is characterized in that: the geometric center of the rotor punch 1 There is a shaft hole 1-1 on the top, and several plastic sealing grooves 1-2 are provided on the edge of the rotor punching plate 1. Between the two adjacent plastic sealing grooves 1-2 is a magnetic steel mounting surface 1-3, and the magnetic steel Several additional holes 1-4 are provided between the mounting surface 1-3 and the shaft hole 1-1, the shortest distance from the geometric center of the additional holes 1-4 to the shaft hole 1-1 is L1, and the magnetic steel mounting surface 1 The shortest distance between -3 and the shaft hole 1-1 is L2, and L1 / L2 is less than or equal to 0.5.

[0017] The numbers of the add...

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PUM

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Abstract

The invention discloses an EPS brushless motor rotor core structure. The EPS brushless motor rotor core structure comprises rotor sheets, wherein the multiple rotor sheets are subjected to overlying to form a rotor core, rotor sheet geometric centers are provided with shaft holes, a plurality of plastic package grooves are formed in the edge of each rotor sheet, a magnetic steel installation surface is formed between each two adjacent plastic package grooves, a plurality of additional holes are formed among the magnetic steel installation surfaces and the shaft holes, the shortest distance between a geometric center of the additional hole to the corresponding shaft hole is L1, the shortest distance between the magnetic steel installation surface to the corresponding shaft hole is L2, and L1 / L2 is smaller than or equal to 0.5. The EPS brushless motor rotor core structure is low in rotational inertia and light in weight.

Description

technical field [0001] The invention relates to the field of motor manufacturing, in particular to an EPS brushless motor rotor core structure. Background technique [0002] At present, an important indicator of the EPS system in use is fast response and light weight under the premise of ensuring the output characteristics. Fast response requires the configured motor to have a low moment of inertia, and light weight requires the use of materials for the motor to be reduced as much as possible. In conventional motor design, low moment of inertia and light weight are a pair of contradictions, which put forward higher requirements for EPS brushless motors. However, in the currently used EPS motors, only one index is considered, or A trade-off between the two. Contents of the invention [0003] The object of the present invention is to provide an EPS brushless motor rotor core structure with low moment of inertia and light weight in order to solve the above-mentioned shortcom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27
CPCH02K1/27H02K2213/03
Inventor 王朝海邱高峰王咏涛邱梁骏胡培俊
Owner NIDEC KAIYU AUTO ELECTRIC JIANGSU
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