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A technology of brushed DC motors and hollow cups, applied in electromechanical devices, electrical components, electric components, etc., can solve the problem of low motor torque coefficient, high speed, and the inability to develop high torque density and power density hollow cup brushless DC motors, etc. problem, to achieve the effect of high power and torque density, high efficiency, and improved space utilization
Pending Publication Date: 2020-11-03
杭州精导智能科技有限公司
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At present, due to the limitation of technology, the coreless brushless motor mostly adopts 1 pair of poles, hexagonal winding structure and triangular connection method. The speed of the motor with this structure is relatively high, and the back EMF and motor torque coefficient are relatively low, which makes it impossible to develop. Coreless brushless DC motor with high torque density and power density
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[0041] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the examples are only specific elaborations of the present invention, the purpose of which is to allow those skilled in the art to better understand the technical solution of the present invention, and should not be regarded as limiting the present invention. Structures that are not described in detail are processed and connected using traditional structures.
[0042]It should also be noted that, in the case of no conflict, the implementation manners and features in the implementation manners in this solution can be combined with each other. The descriptions in this scheme refer to "center", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientati...
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Abstract
The invention discloses a coreless brushless direct current motor, which comprises a bearing, a stator, a rotor and a rotor position sensor assembly, wherein the stator coreless winding is a concentric multilayer winding; a winding lead is welded by adopting an adapter plate assembly; the multi-pole annular magnetic pole is P, the HALBACH structure is adopted for overall multi-pole magnetization,and it is guaranteed that the air gap flux density wave of the winding coupling part is in a sine form; the motor end cover, the casing, the stator, the rotor, the bearing and the Hall positioning circle center are coaxially arranged. The product provided by the invention is simple in structure, convenient to assemble, compact in structure, small in size, small in size, light in weight, small in loss, high in efficiency, high in power and torque density, high in counter potential sine, low in waveform distortion rate, low in operation noise and vibration, small in torque ripple and high in reliability. The coreless brushless motor has the advantages of simple structure, high dynamic response speed, stable control operation, high control precision, high reliability and the like.
Description
technical field [0001] The invention relates to the technical field of brushless direct current motors, and more specifically, it relates to a motion actuator. Background technique [0002] The coreless brushless motor belongs to the DC permanent magnet servo micro motor. The main difference from the ordinary brushless DC motor is that there is no cogging on the armature core, and the motor winding is made into a cup-shaped motor according to a special winding process. Compared with the traditional cogging motor, it has the following advantages: 1. High efficiency: the efficiency of the coreless motor is mostly above 70%, and some products are even close to 90%, while the efficiency of the traditional cogging motor is the same under the same volume and weight. Less than 70%; 2. Small size, light weight, high power and torque density: Due to the improved work efficiency and reduced loss, the power density of the coreless motor is greatly improved. Compared with the traditiona...
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