TWI810646B - Disc type magnetic pole-coil module - Google Patents

Abstract

A disc type magnetic pole-coil module includes a first magnetic disc having a plurality of magnets arranged thereon, a coil disc with a plurality of coil units formed adjacent to the first magnetic disc; a second magnetic disc having a plurality of magnets formed adjacent to the coil disc.

Description

Disk pole coil module

The invention relates to a disc-type electromagnetic module, in particular to a three-disc electromagnetic module.

Faraday's law is widely used in industry, and many devices involve Faraday's law, such as motors, generators, transformers, etc. According to the structure of the device and the power supply method, there are many types of motors or electric motors. The drive requires an appropriate power converter. According to the characteristics of the electromotive force waveform , Motor coil inductance characteristics, engaged in switching control and/or adjustment of appropriate commutation time, in order to obtain better operating characteristics and conversion efficiency.

The motor operation using Faraday's law is that a conductor carrying a current in a magnetic field will be forced to obtain a torque in a single direction. In practice, the considerations of the motor include: the many coils of the conductors in the magnetic field, and the current commutation that alternately operates under the N pole and S pole of the magnetic field must 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 adopted 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 known 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 cylindrical traditional motor is based on an enamelled coil wound with an iron core, and the outer shell is made of cast iron, it is not only bulky and heavy, maintenance and repair are troublesome, and the cost is high, so the structural shape has not been able to get rid of the thick cylindrical shape. style.

In order to solve the above-mentioned technical problems and the shortcomings of traditional devices. It is necessary to develop an innovative and progressive electromagnetic module structure.

The present invention proposes a disk-type magnetic pole coil module, which includes a first magnetic pole plate with a plurality of first N-pole magnets and a plurality of first S-pole magnets arranged alternately; a coil plate is arranged on the side of the first magnetic pole plate and has a plurality Coil configuration; the second magnetic pole plate is arranged on the side of the coil plate, with a plurality of second N-pole magnets and a plurality of second S-pole magnets arranged alternately; wherein the first magnetic pole plate, the second magnetic pole plate and the coil plate produce electromagnetic interaction , so that the relative movement is generated under the action of the vertical magnetic field formed by the first pole disk and the second pole disk.

Wherein the coil disc is a stator, the first magnetic pole disc is the first rotor, and the second magnetic pole disc is the second rotor; or the coil disc is a rotor, the first magnetic pole disc is the first stator, and the second magnetic pole disc is the second stator .

The coils are arranged radially and at equal radial angles on the coil disk or embedded therein, the coils are stacked and arranged, and a rotating shaft passes through the center hole of the coil disk, the first magnetic pole disk, and the second magnetic pole disk.

A disc-type magnetic pole coil module includes: a first coil disc, with a plurality of first coil configurations; a magnetic pole disc, configured on the side of the first coil disc, with a plurality of N-pole magnets and a plurality of S-pole magnets arranged alternately; The coil plate is arranged on the side of the magnetic pole plate, and has a plurality of second coil configurations; and wherein the first coil plate, the second coil plate and the magnetic pole plate generate electromagnetic interaction so as to generate relative motion under the action of the vertical magnetic field formed by the magnetic pole plate.

Wherein the magnetic pole disc is a stator, the first coil disc is the first rotor, and the second coil disc is the second rotor; or the magnetic pole disc is a rotor, the first coil disc is the first stator, and the second coil disc is the second stator .

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

The disk-type magnetic pole coil module of the present invention includes two magnetic pole disks and a coil disk, forming three Meiji structure.

The disk-type magnetic pole coil module of the present invention includes two coil disks and a magnetic pole disk, forming a sandwich structure.

The long arc side (or the bottom of the isosceles triangle section) of the fan-shaped section of each plurality of coil units is arranged toward the outer edge of the base.

The plurality of permanent magnets can be bar-shaped permanent magnets, wherein the long sides of two adjacent permanent magnets are roughly parallel to the two sides of a coil sector or an isosceles triangle.

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 pole disk of the present invention.

The second figure shows the front view of the coil disk of the present invention.

The third figure shows a schematic diagram of a pair of pole disks and coil disks of the present invention.

Figure 4 shows a schematic diagram of the rotation principle of a pair of magnetic pole disks and coil disks in the module of the present invention.

The fifth figure shows another embodiment of the present invention.

The sixth figure shows yet another embodiment of the root invention.

The seventh figure shows the configuration diagram of the three-phase coils of the embodiment of the present invention.

Figure 8 shows a front view of a coil disk according to another embodiment of the present invention.

Figure 9 shows a three-phase coil configuration diagram of another embodiment of the present invention.

Figure 10 shows the current waveforms of the three-phase coils A, B and C of the embodiment of the present invention.

Figure 11 shows a schematic diagram of a disc-shaped module according to an embodiment of the present invention.

Figure 12 shows a schematic diagram of a disc-shaped module according to another embodiment of the present invention.

Fig. 13 shows a schematic diagram of a disc-shaped module according to another embodiment of the present invention.

Figure 14 shows a schematic diagram of the disk drive method 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 structure, the present invention proposes a disc-type magnetic pole coil module. The disc-type magnetic pole coil module of the present invention includes the following features: (i) the disc-type module includes a magnetic pole disc and a coil disc, which can be used as a stator or a rotor; (ii) the magnetic poles of the magnetic pole disc are arranged radially in the axial direction , the phase of the coil disk Adjacent coils can be overlapped or not, and the number of each coil is N turns, where N is a natural number; (iii) The magnetic pole plate and the coil plate are arranged vertically or horizontally relative to each other, so that the power output of the motor module is smooth.

The disk type module of the present invention includes a rotor, a stator and a driving 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 plate 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 disc-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 circles (inner dotted lines) 110. Above-mentioned permanent magnet 104,106 shape also can be circle, ellipse, rectangle, triangle etc.; , and the other end is arranged along the inner circle 110 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 disc of the disc 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). In one embodiment, each coil unit 202 is wound by N turns of enamelled copper wire (wire) and forms a loop 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 fan shape meet at the center of the central hole 208, and the permanent magnets 104, 106 are arranged symmetrically to the two sides of the fan shape.

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 and simultaneous 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 hubs 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 (10)

A disk-type magnetic pole coil module, comprising: a pair of magnetic pole disks and a coil disk; wherein the magnetic pole disk has a plurality of N-pole magnets and a plurality of S-pole magnets arranged in a staggered manner, and the above-mentioned plurality of N-pole magnets and a plurality of S-pole magnets It is in the shape of a strip, arranged in an axial radial arrangement at an equal radial angle between the outer circle and the inner circle of the magnetic pole disk; the coil disk is arranged on the side of the magnetic pole disk, and has a plurality of coil configurations; wherein each of the plurality of coils forms a fan shape , the bottom of which is arranged towards the outer edge of the base of the coil disk, wherein one pair of adjacent N-pole magnets and the S-pole magnets of the magnetic pole disk correspond to the two sides of the sector, and the extension lines on both sides of the sector intersect to the center of the circle, When power is input to the plurality of coils, the pair of adjacent N-pole magnets and the S-pole magnets generate magnetic fields in opposite directions on the two sides of the sector coil, so that the pair of magnetic pole plates and coil plates produce opposite directions. sports. The disc-type magnetic pole coil module as described in Claim 1, wherein the coil disc is a stator and the magnetic pole disc is a rotor; or the coil disc is a rotor and the magnetic pole disc is a first stator. The disc-type magnetic pole coil module as described in Claim 1, wherein the plurality of coils are disposed on the coil disc at equal radial angles or embedded therein, wherein the plurality of coils are stacked and arranged. The disk-type magnetic pole coil module as claimed in Claim 1, wherein a rotating shaft passes through the coil disk and the central hole of the magnetic pole disk. The disk-type magnetic pole coil module as claimed in Claim 1, wherein the disk-type magnetic pole coil module can be installed on the hub of a vehicle. The disk-type magnetic pole coil module as described in claim 1, which includes a control switch, which is composed of an insulating gate bipolar transistor and a diode. The disk-type magnetic pole coil module as described in claim 6, further comprising reading back electromotive force. The disc pole coil module as claimed in claim 6, further comprising detecting the position of the rotor. The disk pole coil module as claimed in claim 6, wherein the coil disk includes three-phase coils, and there is a fixed phase difference between the three-phase coils. The disc pole coil module as described in claim item 9 , wherein No. 1, 4, 7, and 10 coil units are connected in series, No. 2, 5, 8, and 11 coil units are connected in series, and No. 3, 6, 9, and 12 coil units are connected in series. The coil units are connected in series.

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