TWI803773B - Disc motor module - Google Patents

Abstract

A disc type motor module includes: a magnetic pole disc with a first base which a plurality of permanent magnets are arranged radially in an axial direction thereon; a coil disc with a second base which a plurality of coil units are arranged on the second base; wherein the long side of each plurality of permanent magnets are substantially parallel to one side of the coil winding of the coil unit.

Description

Disc Motor Module

The present invention relates to motor technology, in particular to a disc motor module including a magnetic pole disc structure and a coil disc structure.

Motors, or electric motors, are widely used as actuating components in industrial and peripheral equipment. According to its structure and power supply mode, there are many types of motors. The drive of the motor requires an appropriate power converter. According to the characteristics of the motor's back-EMF waveform and the characteristics of the motor coil inductance, it is engaged in switching control and/or appropriate commutation time adjustment to obtain Better operating characteristics and conversion efficiency.

The operating principle of a motor is that a conductor carrying a current is subjected to a force in a magnetic field to obtain a torque in a single direction. In practice, the factors considered by the motor are: the active conductors in the magnetic field are many coils, and the current commutation that alternately operates under the N pole and S pole of the magnetic field needs to be considered. The traditional motor is mainly composed of a cylindrical mechanism including magnet poles arranged in the rotor, a stator, and a printed circuit board. The driver and sensor are arranged and connected to the printed circuit board.

In recent years, permanent magnet motors or DC motors have been gradually used in industrial drives, electric vehicles, home appliances, and electric vehicles. Permanent magnet motors or DC motors have the characteristics of high efficiency, low vibration and low noise, and they have the characteristics of direct drive and adjustable speed.

However, when the stator of the conventional motor structure is installed in the cylindrical motor casing, it is often blocked by other internal components and cannot be configured in a better structure, which leads to an increase in the overall thickness of the motor structure. Furthermore, since the conventional cylindrical motor is based on an enamelled coil wound with an iron core, and the casing is made of cast iron, it is not only bulky and heavy, but also troublesome to maintain and repair, and the cost is high, so the structural shape has not been able to get rid of the heavy cylinder. type of style.

In order to solve the above-mentioned technical problems, as well as the existing shortcomings of the traditional motor. There is a real need to develop innovative and progressive motor structures.

The present invention proposes a disc-type motor module, comprising: a magnetic pole plate with a first base, a plurality of permanent magnets arranged radially in the axial direction on the first base; a coil plate with a second base A seat, a plurality of coil units are arranged on the second base; current is input to the plurality of coil units, and under the action of the magnetic fields of the plurality of permanent magnets, the rotation movement is generated.

The above-mentioned pole disk is a stator unit or a rotor unit.

The above-mentioned coil disk is a stator unit or a rotor unit.

The long sides of each of the plurality of permanent magnets are approximately parallel to one side of the coil winding of one of the plurality of coil units. A plurality of permanent magnets are arranged at intervals of magnetic poles on the surface of the first base relative to the second base. Wherein the plurality of permanent magnets are bar-shaped permanent magnets.

A plurality of coil units are evenly arranged on the second base at equal radial angles.

Each of the plurality of coil units mentioned above is wound with wires to form a fan-shaped, rectangular, triangular or trapezoidal section.

The above disc motor module further includes another magnetic pole disc to form a sandwich structure.

The above disc motor module further includes another coil disc to form a sandwich structure.

The above-mentioned plurality of coil units are arranged in such a way that the long arc side (or the bottom of the isosceles triangular section) of the fan-shaped section of each plurality of coil units faces the outer edge of the second base.

The above-mentioned plurality of permanent magnets are bar-shaped permanent magnets, wherein the long sides of two adjacent permanent magnets are approximately parallel to the fan-shaped or two sides of an isosceles triangle of a coil unit.

These advantages and other advantages will enable readers to clearly understand the present invention from the description of the following preferred embodiments and the patent scope of the application.

100: Magnetic pole plate

102: Disc-shaped non-magnetic base

104, 106: permanent magnet

108: Center hole

110: inner circle

112: outer circle

200: coil plate

202: coil unit

204: Arrow

206: coil base

208: Center hole

220, 222, 224: current waveform

230:Magnetic force lines

300: Disc motor module

320: rotating shaft

500: controller

502: control switch

504: motor

506: Back EMF

508: The position of the rotor

The following detailed description of the present invention and the schematic diagram of the embodiment should make the present invention more fully understood; however, it should be understood that this is only used as a reference for understanding the application of the present invention, rather than limiting the present invention to a specific implementation Among the examples.

The first figure shows the front view of the magnetic pole plate of the disc motor module;

The second figure shows the front view of the coil disc of the disc motor module;

The third figure shows a schematic diagram of a pair of magnetic pole plates and coil plates of a disc motor module;

Figure 4 shows a schematic diagram of the rotation principle of a pair of magnetic pole disks and coil disks in one of the disk motor modules;

Figure 5 shows a disc motor module according to another embodiment of the present invention;

Figure 6 shows a disc motor module according to another embodiment of the present invention;

Figure 7 shows a three-phase coil configuration diagram of a coil disk according to an embodiment of the present invention;

The eighth figure shows the front view of the coil disc of another embodiment of the disc motor module;

Figure 9 shows a three-phase coil configuration diagram of a coil disk according to another embodiment of the present invention;

Figure 10 shows current waveforms of three-phase coils A, B and C according to an embodiment of the present invention;

Figure 11 shows a schematic diagram of a disc motor module according to an embodiment of the present invention;

Figure 12 shows a schematic diagram of a disc motor module according to another embodiment of the present invention;

Figure 13 shows a schematic diagram of a disc motor module according to another embodiment of the present invention;

Fig. 14 shows a schematic diagram of the driving method of the disc motor module according to an embodiment of the present invention.

Herein, the present invention will be described in detail with respect to specific embodiments of the invention and its viewpoints. Such descriptions are for explaining the structure or step flow of the present invention, and are for illustration rather than limiting the patent scope of the present invention. Therefore, except for the specific embodiments and preferred embodiments in the description, the present invention can also be widely implemented in other different embodiments. The implementation of the present invention is described below through specific examples, and those skilled in the art can easily understand the efficacy and advantages of the present invention from the content disclosed in this specification. Moreover, the present invention can also be used and implemented through other specific embodiments, and various details described in this specification can also be applied based on different needs, and various modifications or changes can be made without departing from the spirit of the present invention.

In order to reduce the overall thickness of the motor structure, the present invention proposes a disc motor module. The disc motor module of the present invention includes the following features: (i) the disc motor module includes a magnetic pole plate and a coil plate, which can be used as a stator or a rotor; (ii) the magnetic poles of the magnetic pole plate are axially radial Arrangement, the adjacent coils of the coil disk can overlap or not overlap, the number of each coil is N turns, N is a natural number; (iii) magnetic The pole plate and the coil plate are arranged vertically or left and right relative to each other, so that the power output of the motor module can be smooth.

The disc motor module includes a rotor, a stator and a drive unit. In one embodiment, the rotor has a plurality of magnetic poles, and the stator includes a plurality of stator windings arranged in pairs. A general brushless DC motor includes a single stator with multiple winding groups, and windings of multiple winding coils. Electrically connected to a motor is called a phase or phase winding. A typical DC brushless motor has a three-phase winding. For a fixed winding number or volume and a limited maximum driving voltage, the operating characteristics of the three-phase motor winding are high torque and low speed, because of its Permanent magnets and microcontrollers (ICs). Permanent magnet motors or DC motors have the characteristics of high efficiency, low vibration and low noise, and have the characteristics of direct drive and adjustable speed.

The first figure shows the front view of the magnetic pole disc (magnetic pole disc) of the disc motor module. As shown in the first figure, the pole disc 100 can be a rotor unit or a stator unit, depending on whether the pole disc 100 is fixed. The magnetic pole plate 100 includes a disk-shaped non-magnetic base 102, which has a plurality of permanent magnets (for example, NdFeB permanent magnets) 104, 106 installed thereon, and a central hole 108 is arranged in the center of the base 102 for to couple with a rotating shaft. Above-mentioned plurality of permanent magnets 104, 106 are bar-shaped, and its magnetic poles are arranged on the base 102 (or embedded in it) in an axial radial arrangement at equal radial angles, the outer circle (outer edge) 112 and the inner circle. Between the circle (inner ring dotted line) 110, above-mentioned permanent magnet 104,106 shape also can be circular, oval, rectangular, triangular etc.; One end of 104, 106 is arranged along the outer circle 112, and the other end is arranged along the inner circle 110, so as to form the magnetic pole plate 100 of the present invention. The magnetic poles of adjacent permanent magnets 104 and 106 are alternately arranged in opposite polarity, that is, the first type of magnetic polarity (eg, N pole) and the second type of magnetic polarity (eg, S pole) are alternately arranged. The distance between two adjacent permanent magnets 104, 106 at the first ends of the outer circle 112 is greater than the distance at the second ends of the inner circle 110, that is, the distance between the first ends of the outer circle 112 is greater than the distance between the first ends of the inner circle 110. Second end spacing. If any of the permanent magnets 104, 106 are N-pole or S-pole in the direction going out of the paper, the polarity on the side facing (into the paper) is opposite.

The plurality of permanent magnets 104, 106 of the magnetic pole plate 100 are configured as follows: the first end located at the outer circle 112 is arranged radially in the axial direction so that it faces the outer edge of the base 102, and the second end located at the inner circle 110 is The focal point of extension with the adjacent side is toward the center of the base 102 .

The second figure shows the front view of the coil disk (coil disk) of the disk motor module. In a preferred embodiment, the coil disk 200 can be a rotor unit or a stator unit, depending on which of the pole disk 100 and the coil disk 200 is fixed. The coil plate 200 includes a non-magnetic base (coil base) 206 and a plurality of coil units 202 . Each coil unit 202 is radially and uniformly arranged on a coil base 206 (or embedded therein). For one embodiment, each coil unit 202 is wound by N turns of enamelled copper wire (wire) and forms a ring coil structure with the winding direction of arrow 204 (or the opposite direction). In a preferred embodiment, the base 206 is a disc with a central hole 208 for the axis of rotation to pass through.

When the coil unit 202 disposed on the coil base 206 is energized, it can interact with the corresponding permanent magnets 104 , 106 disposed on the magnetic pole plate 100 . In a preferred embodiment, each coil unit 202 is wound with an enameled copper wire to form a fan-shaped (isosceles triangle, rectangle, trapezoid or similar shape, etc.) section. Each fan-shaped coil is arranged with its bottom facing the outer edge of the coil base 206 . The coil units 202 are installed at correct positions on the coil base 206 , so that the coils on both sides of the sector correspond to the permanent magnets 104 and 106 of the magnetic pole plate 100 . The extension lines on both sides of the sector meet at the center of the central hole 208 . The permanent magnets 104, 106 are arranged symmetrically on both sides of the sector.

As shown in the second figure, the outer arc of each sector coil unit 202 is configured to face the outer edge of the base 206 , while its two sides are configured to face the center of the base 206 . In addition, the fan-shaped two sides of the coil unit 202 and the adjacent permanent magnets of the corresponding magnetic pole plate 100 are parallel to each other, as shown in FIG. 3 .

The third figure shows a schematic diagram of a pair of magnetic pole disks and coil disks in a disc motor module. Although the schematic diagram shows that the magnetic pole disk 100 is above the coil disk 200, it can also be below, and there is only a difference in relative position. The long sides of the pair of permanent magnets 104 and 106 of the magnetic pole plate 100 are approximately parallel and aligned with (corresponding to) the two sides of the coil unit 202 of the coil plate 200 . That is to say, one magnetic pole is located on the outward facing front (outside of the paper) of the permanent magnets 104 and 106 , and the other magnetic pole is located on the inward back (incoming paper), approximately parallel to one side of the coil winding of the coil unit 202 . As an example, when the power is input to the coil unit 202 of the coil disk 200, the coil unit 202 forms a current in the direction of the arrow 204, then the vertical magnetic field in the opposite direction generated by the permanent magnets 104 and 106 on the coil unit 202, If the pole disk is fixed as a stator, according to Fleming's left-hand rule, a tangential force will be generated on the coil disk 200 to make the coil disk 200 rotate. on the contrary, If the coil disk 200 is a stator, the magnetic pole disk 100 is rotated corresponding to the interaction of the coil disk 200 . No matter which is the rotor or the stator, the transmission shaft center of one of the discs in the present invention outputs kinetic energy to achieve the function of the motor. For example, the radius of the disk section of the pole disk 100 is the same as the radius of the disk section of the coil disk 200 . In the disc motor module motor of the present invention, current is input to the coil unit 202 under the magnetic field of the magnetic pole plate 100, so that the rotor of the motor rotates. As shown in the fourth figure, the fronts of the permanent magnets 104 and 106 are respectively the N pole and the S pole, so the direction of the magnetic force line 230 extends vertically from the N pole to the S pole; and the direction of the current (i) generated by the power supply is vertical to the permanent magnet. The magnetic field lines of the magnets 104 and 106 , the current (i) generates a magnetic field and interacts with the magnetic field lines 230 to generate a force (F) along the tangent of the coil disk 200 , thereby causing the motor rotor to rotate.

Figure 5 shows a schematic diagram of a disc motor module according to another embodiment of the present invention. In this embodiment, the structure of the disc motor module includes stacking of the magnetic pole plate 100 , the coil plate 200 and the magnetic pole plate 100 to form a sandwich structure. When the power is directed to the coil unit 202 of the coil disc 200, the current of the coil unit 202 interacts with the magnetic field of the magnetic pole disc 100, causing the corresponding two magnetic pole discs 100 to interact and rotate, thus generating twice the kinetic energy output , increasing the kinetic energy output by the motor. In order to achieve different purposes, the same direction or reverse current can be input to achieve the purpose of simultaneous forward rotation, simultaneous reverse rotation or one forward rotation and the other reverse rotation.

As shown in FIG. 6 , in another embodiment, the structure of the disc motor module includes a stack of the coil disc 200 , the magnetic pole disc 100 and the coil disc 200 . When the power supply is turned on, the coil unit 202 of the two coil plates 200 has a current flow, and the vertical magnetic field generated by the magnetic pole plate 100 makes the corresponding coil plate 200 rotate, which can also generate twice the kinetic energy output and increase the motor capacity. output kinetic energy. In order to achieve different purposes, the same direction or reverse current can be input to achieve the purpose of simultaneous forward rotation, simultaneous reverse rotation or one forward rotation and the other reverse rotation. In other words, another pole disc or coil disc may be included to form a sandwich structure.

The seventh figure shows a three-phase coil configuration diagram of a coil disk according to an embodiment of the present invention. The connection method of the three-phase coils A, B and C is shown in FIG. 7 , wherein the numbers in the figure indicate the individual coils located on the coil plate 200 . Wherein the No. 1, No. 4 and No. 7 coil units 202 arranged along the circumference are connected in series; No. 2, No. 5 and No. 8 coil units 202 are connected in series; No. 3, No. 6 and No. 9 coil units 202 are connected in series.

In another embodiment, the coils of adjacent coil units 202 may partially overlap when stacked and arranged, and each coil may be partially side by side with adjacent coils and stacked together to form a close stack, wherein the coils The unit 202 may be configured such that the perpendicular bisector of the individual coils coincides with one of a set of radial axes in the coil base 206, as shown in the eighth figure. In another embodiment, the configuration diagram of the three-phase coils of the coil disk is shown in FIG. 9 . The connection method of the three-phase coils A, B and C is shown in FIG. 9 , wherein the numbers in the figure indicate individual coils located on the coil plate 200 . The 1st, 4th, 7th, 10th, 13th, and 16th coil units 202 arranged along the circumference are connected in series; the 2nd, 5th, 8th, 11th, 14th, and 17th coil units 202 are connected in series; , No. 15 and No. 18 coil units 202 are connected in series. In addition, the current waveforms of the three-phase coils A, B and C are shown in FIG. 10 , wherein the current waveforms 220 , 222 and 224 of the three-phase coils A, B and C have a fixed phase difference.

One of the advantages of the present invention is to provide a flat motor, which can be used in narrow areas or spaces, and the maintenance of the disc type is easier than that of the cylindrical structure, and it can be directly driven by being embedded in the wheel drum, simplifying or saving complicated mechanisms such as the drive shaft . In one embodiment, the present invention can combine multiple sets of coil discs and magnetic pole discs disc motor module 300, including a plurality of magnetic pole discs 100 and coil discs 200 to provide more outputs, such as tenth and twelve As shown in Fig. 13. The disc motor module 300 in Figure 11 includes a stacked structure of multiple sets of "magnetic pole discs 100+coil discs 200", and the disc motor module 300 in Figure 12 includes multiple sets of "magnetic pole discs 100, coil discs 200 and magnetic pole disk 100", the disc motor module 300 in Figure 13 includes a stacked structure of multiple sets of "coil disks 200, magnetic pole disks 100, and coil disks 200". In a preferred embodiment, the coil base 206 of the coil disk 200 is a disk with a central hole 208, and the magnetic pole base 102 of the magnetic pole disk 100 is also a disk with a central hole 108 for rotating Shaft 320 passes through. In this embodiment, the disc motor module 300 can generate the rotation of the rotor through electrification, and it is composed of a plurality of coaxially assembled pairs of magnetic pole plates 100 and coil plates 200 assembled in a cylindrical shell. The above-mentioned pole plate 100 is a stator unit, and the coil plate 200 is a rotor unit. In another example, the above-mentioned pole plate 100 is a rotor unit, and the coil plate 200 is a stator unit. A plurality of stator units are axially and equidistantly fixed in the housing as the stator of the disc motor module 300 , and a plurality of rotor units are coupled to the rotating shaft 320 to rotate together. Inside the disc motor module 300 , the magnetic pole disc 100 and the coil disc 200 are stacked in pairs.

Figure 14 shows the driving principle and method of a DC brushless motor. The control switch 502 (for example, a semiconductor switch element) is composed of six insulated gate bipolar transistors (insulated gate bipolar transistor, IGBT) and diodes. The diode is connected between the collector and the emitter of the insulated gate bipolar transistor, and the six IGBT switches (T1, T2, T3, T4, T5, T6) of the control switch 502 are used to apply simple turn-on and turn-off (ON /OFF) signal, in which 6 IGBT switches (T1, T2, T3, T4, T5, T6) are connected in parallel with 6 diodes (D1, D2, D3, D4, D5, D6). Among the 6 switches, only 2 switches are turned on at a time, and the change of the 6 switches attracts the rotor to reach 6 fixed points, so that the motor 504 rotates. For example, in the six-step driving mode, the first step is to turn on the IGBT switch (T6, T1), and turn off the other 4 transistors; the second step is to turn on the IGBT switch (T1, T2), and turn off the other 4 transistors; The third step is to turn on the IGBT switch (T2, T3), and turn off the other 4 transistors; the fourth step is to turn on the IGBT switch (T3, T4), and turn off the other 4 transistors; the fifth step is to turn on the IGBT switch (T4, T5) turn on, the other 4 transistors are turned off; the sixth step is to turn on the IGBT switches (T5, T6), and turn off the other 4 transistors. After each step of driving, the counter electromotive force is read 506 and the position of the rotor is detected 508 , and then the controller 500 controls the switching of the IGBT switch.

The disc motor of the present invention comprises: at least one pair of magnetic pole discs, a coil disc, a casing and a control circuit in which the coil discs are interconnected. Both the pole plate and the coil plate include a non-magnetic base (substrate) or insulating disc, for example, made of plastic injection molding or other insulating materials. In addition, there is a transmission shaft center, and the transmission shaft centers of these insulating discs are installed on the casing through bearings, and a plurality of pairs of magnetic pole disks and coil disks are fixed on the inner surface of the casing. When the power is input, the current is transmitted to each pre-designed contact and coil through the control of the switching element, so that the insulating disc of the rotor is rotated by the interaction of the magnetic field of the magnetic pole plate and the magnetic field generated by the coil plate. To output the kinetic energy to achieve the function of the motor.

From the above description, it can be seen that the disc motor of the present invention does not need to use enamelled coils to wind the iron core, and does not need to use thick and heavy cast iron as the outer shell. Therefore, the motor can be made into a light and thin disc structure in terms of shape. The non-cylindrical structure makes it more widely used and all items or machines that need to use power.

For example, take a bicycle as an example: the disc motor module of the present invention can be simply installed on the wheel of the bicycle to become an electric bicycle. It is like a disc brake for a car, and is fixed to the double-inserted position of the front wheel of the bicycle and the tire can rotate at the same time.

For example, take locomotives and automobiles as examples: the disc motor module of the present invention can be easily installed on the wheel drums of locomotives and automobiles. The inner ring of the tire rotates at the same time, using the reverse input current, it also has a braking function.

Take the electric fan as an example: Since the electric fan is composed of motor-driven blades, its thickness is not easy to meet the requirements of lightness and thinness in design, and the use of the disc-type motor module of the present invention can make the shape of the electric fan more compact. Thin and light can also be more beautiful.

Take the application of exhaust fans as an example: exhaust fans are common equipment in factories and households, but they are generally large in size and thickness, and difficult to install, especially where they are used. With maintenance, it can become more beautiful in its appearance.

In addition, due to its light and thin size, the disc motor module of the present invention can be used in range hoods and all items that require heat dissipation, such as: computer radiators, cooling fans of air conditioners, car water tanks, and heat dissipation of car air conditioners Fans, blowers, etc., not only can change the shape of the existing motor, but also can improve the power consumption and wear of the traditional motor in use.

To sum up, the present invention is obviously a disc motor that breaks the traditional motor structure and avoids the use of enamelled coils and iron cores as the basic components. Simple and easy, etc., therefore, it has the unexpected effect of traditional motors.

The above description is the preferred embodiment of the present invention. Those skilled in the art should be able to understand that it is used to illustrate the present invention rather than to limit the scope of patent rights claimed by the present invention. The scope of its patent protection shall depend on the scope of the appended patent application and its equivalent fields. Anyone who is familiar with the technology in this field, without departing from the spirit or scope of this patent, changes or modifications are all equivalent changes or designs completed under the spirit disclosed by the present invention, and should be included in the scope of the following patent application Inside.

100: Magnetic pole plate

102: Disc-shaped non-magnetic base

104, 106: permanent magnet

108: Center hole

112: outer circle

200: coil plate

202: coil unit

206: coil base

208: Center hole

Claims (8)

A disc type motor module, comprising: a first magnetic pole plate having a first base on which a plurality of first permanent magnets are arranged; a coil plate on which one side of the coil plate is equipped with the first The magnetic pole plate has a second base, and a plurality of coil units are arranged on the second base; the second magnetic pole plate is arranged on the other side of the coil plate to form a sandwich structure, wherein the second magnetic pole plate has a plurality of a second permanent magnet; where the current is input to the plurality of coil units, under the action of the magnetic fields of the plurality of the first and the second permanent magnets, so as to generate rotational motion; wherein the coil disc includes a three-phase coil, wherein the first Coil units 1, 4, 7, and 10 are connected in series, coil units 2, 5, 8, and 11 are connected in series, and coil units 3, 6, 9, and 12 are connected in series. There is a fixed phase difference between the three-phase coils, where Furthermore, the control switch is composed of 6 transistors T1, T2, T3, T4, T5, T6, only 2 of which are turned on at a time, and the change of the 6 switches attracts the rotor to reach 6 fixed-point rotations. The disc motor module as described in claim 1, wherein the first and second pole disks are a stator unit, and the coil disk is a rotor unit; or wherein the first and second pole disks are a rotor unit, and the coil disk is a stator unit. The disc motor module as described in claim 1, wherein the first step is that the transistors (T6, T1) are turned on, and the others are turned off; the second step is that the transistors (T1, T2) are turned on, and the others are turned off; The third step is to turn on the transistor (T2, T3), and turn off the other 4; the fourth step is to turn on the transistor (T3, T4), and turn off the other 4; the fifth step is to turn on the transistor (T4, T5) , the other 4 are closed; the sixth step is to open the transistor (T5, T6), and the other 4 are closed. The disc motor module as claimed in claim 1, wherein the plurality of first permanent magnets are arranged at intervals between magnetic poles on the surface of the first base relative to the second base. A disc type motor module, comprising: a first magnetic pole plate having a first base on which a plurality of first permanent magnets are arranged; a coil plate on which one side of the coil plate is equipped with the first The magnetic pole plate has a second base, and a plurality of coil units are arranged on the second base; the second magnetic pole plate is arranged on the other side of the coil plate to form a sandwich structure, wherein the second magnetic pole plate has a plurality of A second permanent magnet; where the current is input to the plurality of coil units, under the action of the magnetic fields of the plurality of the first and the second permanent magnets, so as to generate rotational motion; wherein the coil disk includes a three-phase coil, the three-phase coil There is a fixed phase difference between the phase coils; the control switches include complex transistors, only two of which are turned on at a time, and the rotor is attracted to complex fixed-point rotation through complex switch changes. As for the disc motor module described in claim 5, the control switch includes 6 transistors T1, T2, T3, T4, T5, T6, and the rotor is attracted to rotate at 6 fixed points by changing 6 switches. The disc motor module as described in claim 5, wherein the first step is that the transistor (T6, T1) is turned on, and the others are turned off; the second step is that the transistor (T1, T2) is turned on, and the others are turned off; the second step The third step is to turn on the transistor (T2, T3), and turn off the other 4; the fourth step is to turn on the transistor (T3, T4), and turn off the other 4; the fifth step is to turn on the transistor (T4, T5) , the other 4 are turned off; the sixth step is to turn on the transistor (T5, T6), and turn off the other 4; after each step of driving, read the back electromotive force and detect the rotor position, and control the switching of the transistor through the controller. The disc motor module as claimed in claim 5, wherein the coils of adjacent coil units may partially overlap when arranged.

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