阅读说明：本技术 一种陶瓷pcb盘式无刷励磁电机 (Ceramic PCB disc type brushless excitation motor ) 是由 姚橹 唐宇 刘元魁 于 2019-10-31 设计创作，主要内容包括：本发明公开了一种陶瓷PCB盘式无刷励磁电机,包括依次设置在中心轴上的前盖、第一轴承、第一磁钢、第一永磁体、陶瓷PCB绕组、第二永磁体、第二磁钢、第二轴承、后盖；所用绕组为陶瓷PCB绕组,所述陶瓷PCB绕组包含至少一层陶瓷PCB基板,及固定在陶瓷PCB基板上的绕组,所述绕组在陶瓷PCB基板上以中心轴孔呈圆周阵列分布。本发明的技术方案可以提高电机整体的性能、拥有更大功率、更高速率、更长寿命,同时可以明显的降低电机的厚度。(The invention discloses a ceramic PCB disc type brushless excitation motor, which comprises a front cover, a first bearing, first magnetic steel, a first permanent magnet, a ceramic PCB winding, a second permanent magnet, second magnetic steel, a second bearing and a rear cover, wherein the front cover, the first bearing, the first magnetic steel, the first permanent magnet, the ceramic PCB winding, the second permanent magnet, the second magnetic steel, the second bearing and the rear cover are sequentially arranged on a central shaft; the winding is a ceramic PCB winding, the ceramic PCB winding comprises at least one layer of ceramic PCB substrate and windings fixed on the ceramic PCB substrate, and the windings are distributed on the ceramic PCB substrate in a circumferential array mode through a central shaft hole. The technical scheme of the invention can improve the overall performance of the motor, has higher power, higher speed and longer service life, and can obviously reduce the thickness of the motor.)

1. The ceramic PCB disc type brushless excitation motor is characterized in that a winding used is a ceramic PCB winding, the ceramic PCB winding comprises at least one layer of ceramic PCB substrate and windings fixed on the ceramic PCB substrate, and the windings are distributed on the ceramic PCB substrate in a circumferential array mode through a central shaft hole.

2. The ceramic PCB disc type brushless excitation motor of claim 1, comprising a front cover, a first bearing, a first magnetic steel, a first permanent magnet, a ceramic PCB winding, a second permanent magnet, a second magnetic steel, a second bearing, and a rear cover sequentially disposed on the central shaft.

3. The ceramic PCB disc brushless excitation motor of claim 1, wherein the ceramic PCB substrate is a composite ceramic material.

4. A ceramic PCB disc brushless excitation motor according to any of claims 1 to 3, wherein the ceramic PCB substrate comprises one or more of alumina, silicon nitride, diamond, boron nitride.

5. A ceramic PCB disc brushless excitation motor according to any of claims 1 to 3, wherein the ceramic PCB substrate comprises a base plate and a ceramic material coated on the base plate.

6. The ceramic PCB disc brushless excitation motor of claim 5, wherein the base plate is one or more of aluminum, copper.

7. The ceramic PCB disc type brushless excitation motor of any one of claims 1 to 3, wherein the winding comprises 10 to 18 groups of closed coils; the closed coils are radially distributed on the ceramic PCB substrate around the central shaft hole.

8. A ceramic PCB disc brushless excitation motor according to any of claims 1 to 3, wherein the windings are printed from conductive material on a ceramic PCB substrate.

9. The ceramic PCB disc type brushless excitation motor of any claim 1 to 3, wherein the winding is etched on a ceramic PCB substrate.

10. The ceramic PCB disc type brushless excitation motor of any one of claims 1 to 3, wherein the winding is fixed on the ceramic PCB substrate by means of 3D printing or mask spraying of metal.

Technical Field

The invention relates to the field of motor manufacturing, in particular to a ceramic PCB disc type brushless excitation motor.

Background

The brushless excitation motor is a common motor type, an armature winding (a silicon steel sheet iron core) of the brushless excitation motor is positioned in a stator iron core groove, torque pulsation is generated when the motor rotates due to the cogging effect, the dynamic response speed is reduced, the vibration noise is increased, and meanwhile, the silicon steel sheet iron core consumes certain energy consumption; and the structure of radial magnetic field is adopted, the whole thickness is larger, and the thin installation requirement can not be met.

The patent with publication number CN209250362U, named as a PCB disc brushless dc motor, adopts PCB board as winding, but adopts substrate material used in traditional printed circuit board, such as FR4(a epoxy-glass fiber board), which is a driving force source for generating high-speed moving rotor in the motor, and cannot avoid impact and deformation of global or local heat or force due to friction, resistance and other factors, and is easy to age in long-time operation, and serious failure deformation or even cracking, which can lead to sudden motor failure and serious disaster; on the other hand, the fine instantaneous or permanent deformation of the substrate can cause the matching dislocation between the electromagnetic circuit in the PCB on the substrate and the control system, which seriously affects the characteristics of the motor such as power, safety, rotating speed, etc.; in addition, in the process of processing the PCB, the stability, consistency and reliability of the traditional substrate material are slightly changed, and the performance of a certain single product or batch motor product is influenced; meanwhile, in order to ensure the reliability of the PCB, when the conventional substrate is used, there is a certain requirement on the thickness of the substrate, and the design and manufacture of a thinner, more compact and more efficient motor cannot be realized.

Patent publication No. CN104488285A, entitled wireless telemetry system including an inductive power system, uses a ceramic PCB board as the winding, and a secondary induction coil assembly including a secondary dry-side winding formed on a ceramic substrate mounted to the end face of the turbine blade root. The scheme can not be applied to the motor for solving the problems of signal transmission and power supply in a high-temperature environment.

The patent with publication number CN2807422Y, named low-temperature co-fired ceramic winding high-frequency power transformer, laminates metal conductor slurry and ceramic material in multiple layers, forms a ceramic insulating framework through low-temperature co-firing, includes an integral composite ceramic winding module connected by internal metal windings, realizes insulating treatment, improves heat dissipation, reduces volume, and solves the problems of heat dissipation and how to stack multiple layers of windings, and the above scheme cannot be applied to motors.

Disclosure of Invention

In view of the above-mentioned defects in the prior art, the present invention aims to provide a ceramic PCB disc type brushless excitation motor, which can improve the overall performance of the motor, has higher power, higher speed and longer service life, and can significantly reduce the thickness of the motor.

The purpose of the invention is realized by the following technical scheme:

a ceramic PCB disc type brushless excitation motor is characterized in that a winding used by the ceramic PCB disc type brushless excitation motor is a ceramic PCB winding, the ceramic PCB winding comprises at least one layer of ceramic PCB substrate and windings fixed on the ceramic PCB substrate, and the windings are distributed on the ceramic PCB substrate in a circumferential array mode through a central shaft hole.

Further, including setting gradually protecgulum, first bearing, first magnet steel, first permanent magnet, ceramic PCB winding, second permanent magnet, second magnet steel, second bearing, the back lid on the center pin.

Further, the ceramic PCB substrate is made of a composite ceramic material.

Further, the ceramic PCB substrate comprises one or more of alumina, silicon nitride, diamond, boron nitride.

Further, the ceramic PCB substrate includes a base plate and a ceramic material coated on the base plate.

Further, the bottom plate is one or more of aluminum and copper.

Further, the winding comprises 10-18 groups of closed coils; the closed coils are radially distributed on the ceramic PCB substrate around the central shaft hole.

Further, the windings are printed from a conductive material on a ceramic PCB substrate.

Furthermore, the winding is formed by etching on the ceramic PCB substrate.

Further, the winding is fixed on the ceramic PCB substrate in a metal 3D printing or mask spraying mode.

Due to the adoption of the technical scheme, the invention has the following advantages:

(1) the ceramic PCB substrate stator winding disc realizes a coreless structure, has no teeth and no slots, eliminates tooth space torque and iron core loss, and can eliminate electromagnetic attraction between a stator and a rotor;

(2) the armature winding adopts a ceramic PCB winding, and compared with a wire-wound winding, the thickness of the stator armature can be reduced, the equivalent air gap length of the motor is reduced, and the use amount of permanent magnets is reduced;

(3) the ceramic PCB winding form and the coil shape are designed flexibly, the shape, the size and the positioning of the coil are very accurate, the processing manufacturability is very good, and the ceramic PCB winding form and the coil shape have good mechanical strength and heat dissipation conditions.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Detailed Description

The invention is further illustrated by the following figures and examples.