Stator structure based on iron-core-free disc type motor

Abstract

The invention provides a stator structure based on an iron-core-free disc type motor. The stator structure comprises a PCB including 6 or 6N layers; each layer of the PCB is provided with an outer endportion, a winding setting portion and an inner end portion successively from outside to inside; each layer is also provided with at least three phase of windings, and each phase of winding is provided with a terminal correspondingly; the terminal is arranged in an external through hole in the winding setting portion; each phase of winding coil is printed and arranged in the corresponding terminal position; the winding coil is uniformly printed on the winding setting portion along the circumferential direction, the length of the winding coil is arranged side by side along the radial direction, and the winding coil is printed without overlapping; the same phase of winding coils arranged in the layers of the PCB are connected via the outer and inner portions; and the layers in the PCB are connected via through holes. The structure of the stator winding is arranged along the circumferential direction of the PCB, the radial length is not increased, space of a stator board can be used morefully, the structure is more compact, the size of the stator board can be reduced, and the output performance of the motor is improved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a stator structure based on an ironless disc motor. Background technique [0002] One of the main advantages of the PCB stator disc coreless motor is its small size and exquisite structure. In order to ensure that the size of the disc motor is within certain restrictions, the length of its air gap will also be limited, thereby limiting The space range that the stator winding arrangement can occupy. The stator winding manufactured by the printed circuit board technology is applied to the disc motor in the form of a flat disc, which makes the design of the motor winding more flexible and obtains excellent performance. The application of printed circuit board technology simplifies the structure of the disc-type coreless permanent magnet synchronous motor. The conductor of the winding is directly printed on the PCB board, which does not involve problems such as winding and epox...

AI Technical Summary

Problems solved by technology

However, due to the limitation of PCB board area, this kind of wiring method will make the magnetic flux interlinked in the inner circle of the PCB winding very small, which will hardly help to increase the power density of the motor, and will also increase the winding resistance, increase copper consumption, and cause copper wires to be damaged. waste, increase the cost of the motor

Images