A parallel motor model structure and operation method thereof

Abstract

The present invention provides a parallel motor model structure and an operation method thereof, wherein the parallel motor model structure includes a rotor and a stator, wherein the rotor includes at least two independent coils that are independent of each other; the stator includes at least one pair of magnet pairs and at least one pair of conductive ring pairs consisting of a positive conductive ring and a negative conductive ring, each pair of magnet pairs includes a first magnet and a second magnet, and the N pole of the first magnet and the S pole of the second magnet are respectively used to act on the energized independent coil; each independent coil has two electrical terminals, one electrical terminal is used to electrically connect the conductive ring pair, and the other electrical terminal is used to electrically connect the conductive ring pair or electrically connect the grounding electric ring, and the electrical terminal electrically connected to the conductive ring pair changes the electrically connected conductive ring through the rotation of the rotor; in one rotation cycle, there is a moment when at least two independent coils are connected in parallel. The parallel motor structure of this scheme can realize the parallel connection of all coils, effectively improving the working efficiency of the motor.

Description

Technical Field

[0001] The present invention belongs to the technical field of motors, and in particular relates to a parallel motor model structure and an operating method thereof. Background Art

[0002] Motors include brushed motors and brushless motors. Brushed motors are widely used in some occasions with low requirements due to their stable performance and low cost.

[0003] In the case of only one coil, the continuous rotation of the shaft cannot be guaranteed, so current motors all use multi-coil form. However, the current multi-coil motors have a defect. For example, there is a mutual influence relationship between the coils. The state of one coil will affect the state of another coil, and the independence of the coils cannot be guaranteed; and the coils cannot be connected in parallel. For example, the current typical three-coil motor has two coil connection methods: star connection and delta connection. In the star connection, there is no possibility of parallel connection. In the delta connection, Figure 1 and Figure 2 As shown, although there is a parallel circuit, each coil has at most one set of parallel connections. For example, when the brush contacts A and B, the equivalent circuit is as follows Figure 2 As shown, L2 and L3 are connected in series, L1 is connected in parallel with the series circuit of L2 and L3, and the brushes contact points B and C and points A and C. Figure 2 The equivalent circuit is similar, except that the series-parallel relationship between the coils will change. The applicant has found that the parallel model motor has obvious advantages over the series model motor in terms of motor performance and torque output, but the current motor can only realize one set of parallel circuits at most, and there is an influence relationship between the coils, so it is impossible to realize all coils in parallel, which affects the performance of the motor. If all coils can be connected in parallel, it will be innovative in the field of motors. Summary of the invention

[0004] The object of the present invention is to provide a parallel motor model structure and an operating method thereof in view of the above problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A parallel motor model structure comprises a rotor and a stator, wherein the rotor comprises at least two independent coils that are independent of each other;

[0007] The stator comprises at least one pair of magnets and at least one pair of conductive rings consisting of a positive conductive ring and a negative conductive ring, each pair of magnets comprises a first magnet and a second magnet, and the N pole of the first magnet and the S pole of the second magnet are respectively used to act on an independent coil that is energized;

[0008] Each independent coil has two electrical terminals, one of which is used to electrically connect to the conductive ring pair, and the other is used to electrically connect to the conductive ring pair or to electrically connect to the grounded electrical ring, and the conductive ring electrically connected to the conductive ring pair is changed by the rotation of the rotor;

[0009] And in one rotation cycle, there is a moment when at least two independent coils are connected in parallel with each other.

[0010] In the above parallel motor model structure, in one rotation cycle, there is a moment when at least three / four / five / six independent coils are connected in parallel with each other;

[0011] And in each rotation period, there are at least two / three / four / five / six independent coils connected in parallel with each other for a time period greater than 1 / Z rotation period, where Z is equal to 2, 3, 4 or 5;

[0012] The two electrical terminals are used to electrically connect the conductive ring pair, and the positive conductive ring in the conductive ring pair is used to connect the positive power supply, and the negative conductive ring is used to ground;

[0013] Alternatively, one of the electrical terminals is used to electrically connect to a grounded electrical ring, and the positive conductive ring in the conductive ring pair is used to connect to a positive power source, and the negative conductive ring is used to connect to a negative power source;

[0014] The electrical connection terminal directly or indirectly slides and contacts the grounding electric ring / conductive ring pair during the rotation process to achieve electrical connection with the grounding electric ring / conductive ring pair.

[0015] In the above-mentioned parallel motor model structure, the number of the magnet pairs is consistent with the number of the conductive ring pairs, and when there are multiple pairs of magnet pairs and multiple pairs of conductive ring pairs, the multiple pairs of magnet pairs are sequentially distributed in the circumferential direction, and the multiple pairs of conductive ring pairs are sequentially distributed in the circumferential direction;

[0016] When the number of magnet pairs / conductive ring pairs is one pair, the coil angle θ is less than or equal to 180 degrees; when the number of magnet pairs / conductive ring pairs is greater than one pair, the relationship between the coil angle θ and the number of magnet pairs / conductive ring pairs is:

[0017]

[0018] N is the number of magnet pairs / conductive ring pairs.

[0019] In the above parallel motor model structure, the relationship between the coil angle θ and the number of magnet pairs / conductive ring pairs is:

[0020]

[0021] The center angle α of the trajectory formed by the two electrical terminals of each independent coil is:

[0022] When the number of magnet pairs / conductive ring pairs is one pair, α≤180,

[0023] When the number of magnet pairs / conductive ring pairs is greater than one pair, α<360 / N,

[0024] And α>β, where β represents the vacant arc between the effective segments of adjacent conductive rings.

[0025] In the above parallel motor model structure, the trajectory center angle α is equal to the coil angle θ, or the angle difference between the trajectory center angle α and the coil angle θ is less than a preset difference;

[0026] The conductive rings are evenly distributed in the circumferential direction, and the vacant arcs between the effective sections of adjacent conductive rings are all smaller than the set angle;

[0027] And the preset difference is 50 degrees, 30 degrees, 20 degrees or 10 degrees;

[0028] The setting angle is 30 degrees, 20 degrees, 10 degrees or 5 degrees

[0029] A motor operation method of a parallel motor model structure, comprising:

[0030] A. All electric rings are energized, and the two electrical terminals are electrically connected to at least two independent coils of electric rings with different polarities and energized in parallel;

[0031] And the electric ring includes a positive conductive ring and a negative conductive ring; or the electric ring includes a positive conductive ring, a negative conductive ring and a grounding electric ring;

[0032] B. All the independent coils that are energized form magnetic fields respectively, and the formed N pole / S pole is attracted by the S pole of the nearby second magnet / N pole of the first magnet to drive the rotor to rotate;

[0033] C. During the rotation of the rotor, at least one electrical terminal of each group of independent coils is electrically connected to the positive conductive ring and the negative conductive ring in sequence through the rotation of the rotor to achieve coil commutation.

[0034] In the motor operation method of the parallel motor model structure, in step A, all the electric loops are energized, and at least three / four / five / six independent coils whose two electrical terminals are electrically connected to electric loops of different polarities are energized in parallel;

[0035] In step C, one electrical terminal of each independent coil is electrically connected to the positive conductive ring and the negative conductive ring in sequence by the rotation of the rotor, and the other electrical terminal is always electrically connected to the grounding electrical ring to realize coil commutation; or, two electrical terminals of each independent coil are electrically connected to the positive conductive ring and the negative conductive ring in sequence by the rotation of the rotor to realize coil commutation;

[0036] The electrical connection end point directly or indirectly slides and contacts the grounding electric ring / conductive ring pair during the rotation process to achieve electrical connection with the grounding electric ring / conductive ring pair;

[0037] In one rotation cycle, at least one independent coil has a rotation angle of 360-2Nβ and is in an energized state;

[0038] Where β is the vacant arc between the effective segments of adjacent conductive rings, and N is the number of conductive ring pairs / magnet pairs.

[0039] In the motor operation method of the parallel motor model structure described above, in one rotation cycle, all independent coils have a rotation angle of 360-2Nβ in an energized state.

[0040] In the motor operation method of the parallel motor model structure described above, in one rotation cycle, the energization angle of at least one independent coil approaches 360 degrees.

[0041] In the motor operation method of the parallel motor model structure described above, in one rotation cycle, the energization angle of all independent coils approaches 360 degrees;

[0042] And the approach range is within 5 degrees, 10 degrees or 20 degrees.

[0043] The advantages of the present invention are:

[0044] Conductive ring pairs are used to replace brush pairs, and commutators are eliminated. No commutator is needed to distribute the power-on time. Power-on and current commutation are achieved by sliding the power-connecting terminals of independent coils into contact with the conductive ring pairs, which can realize the parallel connection of all independent coils.

[0045] All independent coils are independent of each other. The state of any independent coil will not affect other independent coils, ensuring the independence of all coils, thereby ensuring the stability of output torque;

[0046] Under ideal conditions, when the effective arc of the conductive ring and the center angle α of the trajectory meet certain conditions, all coils can work full-time, improving the operating efficiency of the motor;

[0047] By connecting each coil in parallel, the loss can be reduced while ensuring the torque output remains unchanged;

[0048] By distributing multiple groups of relatively dense independent coils circumferentially, the force of the magnetic field is distributed throughout the circumference of the rotor, thereby improving the effect of the magnetic field force, ensuring the output effect, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a schematic diagram of the wiring of the coils of a three-coil motor in the prior art;

[0050] Figure 2 yes Figure 1 Equivalent circuit diagram of the three coils in the middle;

[0051] Figure 3 It is a schematic diagram of the conductive ring pair and the magnetic pair in which the spatial positions are staggered at a certain angle;

[0052] Figure 4 It is a schematic diagram of the winding of the independent coil on the iron core of the present invention;

[0053] Figure 5 It is a schematic diagram of three independent coils of a pair of magnetic poles in the present invention;

[0054] Figure 6 It is a schematic diagram of the electrical terminals of three groups of 180-degree independent coils in the present invention being connected to a pair of conductive rings;

[0055] Figure 7 This is a motor effect diagram of two groups of 180-degree coils of the present invention;

[0056] Figure 8 This is another motor effect diagram of the present invention with two groups of 180-degree coils;

[0057] Fig. 9 It is a schematic diagram of two pairs of magnetic poles and three independent coils in the present invention;

[0058] Fig.10 It is a schematic diagram of the electrical terminals of three groups of 90-degree independent coils in the present invention being connected to two pairs of conductive rings;

[0059] Fig.11 This is a motor effect diagram of the 90-degree coil of the present invention;

[0060] Fig.12 It is the equivalent circuit diagram of a traditional motor;

[0061] Fig.13 It is the equivalent circuit diagram of this parallel scheme.

[0062] Reference numerals: magnet pair 1 ; first magnet 11 ; second magnet 12 ; conductive ring pair 2 ; independent coil 3 ; electrical terminal 31 . DETAILED DESCRIPTION

[0063] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0064] This embodiment discloses a parallel motor model structure and an operation method thereof. The parallel motor model makes innovative improvements to the traditional motor, cancels the commutator, uses an electric ring pair to replace the traditional brush pair, and the coil has two electrical terminals, and the electric ring includes a positive conductive ring and a negative conductive ring; or the electric ring includes a positive conductive ring, a negative conductive ring and a grounding electric ring. During the rotation of the coil, one electrical terminal 31 of each independent coil 3 is electrically connected to the positive conductive ring and the negative conductive ring in sequence, and the other electrical terminal 31 is always electrically connected to the grounding electric ring to achieve coil commutation; or, the two electrical terminals of each independent coil are electrically connected to the positive conductive ring and the negative conductive ring in sequence to achieve coil commutation; each independent coil is electrically connected to the electric ring independently so that each energized independent coil is connected in parallel.

[0065] The electrical connection end point directly or indirectly slides and contacts the grounding electric ring / conductive ring pair during the rotation process to achieve electrical connection with the grounding electric ring / conductive ring pair;

[0066] Inspired by the present application, those skilled in the art can combine the present application with the prior art motor coil setting method, such as connecting some coils in series, setting some coils independently, or connecting a series coil formed by connecting multiple groups of coils in series as an independent coil, and then connecting the independent coils in parallel, etc. No matter which method is used, as long as the idea of ​​connecting the independent coils in parallel of the present application is applied, it should be within the protection scope of the present application. In order to reflect the superiority of the present application, a detailed introduction is given below using the example of all coils being independently set. In addition, during the rotation process, the electrical terminal can directly or indirectly slide in contact with the electric ring to achieve electrical connection with the electric ring pair. Direct sliding contact is taken as an example below.

[0067] Embodiment 1

[0068] The present embodiment discloses a multi-coil parallel motor, comprising at least one pair of magnet pairs 1 and at least one pair of conductive ring pairs 2 consisting of two positive conductive rings and a negative conductive ring for providing positive electricity and negative electricity respectively, and at least two independent coils 3, such as three, four, five, six, etc., which are independent of each other. Each pair of magnet pairs 1 comprises a first magnet 11 and a second magnet 12, and the N pole of the first magnet 11 and the S pole of the second magnet 12 are respectively used to act on the energized independent coil 3. Each independent coil 3 has two electrical terminals 31 for electrically connecting the conductive ring pair 2, specifically in the present embodiment, it has two electrical terminals 31 for sliding contact with the positive conductive ring or the negative conductive ring, and in one rotation cycle, there is a moment when at least two independent coils are connected in parallel to each other, that is, after all the conductive rings are energized, immediately or after rotating a certain angle, at least two independent coils whose two electrical terminals 31 are respectively electrically connected to the conductive rings of different polarities will be energized and connected in parallel to each other. Preferably, in each rotation period, there are at least two / three / four / five / six independent coils connected in parallel with each other for a time period greater than 1 / Z rotation periods, where Z is equal to 2, 3, 4 or 5.

[0069] It is further preferred that two independent coils are connected in parallel at all times. All the energized independent coils form magnetic fields respectively, and the formed N poles / S poles are attracted by the S poles of the second magnet / N poles of the first magnet nearby to drive the rotor to rotate. Through the rotation of the rotor, the two electrical terminals 31 of each group of independent coils 3 are sequentially slidably contacted with the positive conductive ring and the negative conductive ring to realize coil commutation.

[0070] The conductive ring can be installed in a non-rotating part such as the motor housing as needed, and each electrical terminal 31 can be fixed on the rotating shaft in any way to achieve stable sliding contact with the conductive ring during rotation. There is no restriction here, and the electrical terminal 31 can achieve power supply and reversing by sliding contact with the upper surface, lower surface, inner surface or outer surface of the conductive ring.

[0071] The independent coils 3 of this embodiment are in sliding contact with the conductive ring via two electrical terminals 31. During the rotation of the rotor, each independent coil 3 is independently connected to the conductive ring, and commutation is achieved by rotating and switching the conductive ring contacted by the electrical terminals 31. The independent coils 3 do not affect each other, and multiple independent coils 3 can be energized at the same time. The multiple independent coils 3 energized at the same time are connected in parallel to realize a parallel motor model.

[0072] Preferably, the number of magnet pairs 1 is consistent with the number of conductive ring pairs 2. When this embodiment is put into use, preferably all conductive rings have the same curvature, all magnets have the same curvature, and the conductive rings and magnets have the same or similar curvature.

[0073] When the number of pairs of conductive rings and the number of pairs of magnets are both a pair, the positive and negative conductive rings are symmetrically arranged with the rotation axis A as the center line, and the first magnet 11 and the second magnet 12 are also symmetrically arranged with the rotation axis A as the center line. When there are multiple pairs of pairs of conductive rings and magnets, the first magnet 11 and the second magnet 12 are alternately arranged circumferentially with the rotation axis as the center, and the positive conductive rings and the negative conductive rings are alternately arranged circumferentially with the rotation axis as the center. The multiple pairs of magnet pairs 1 and the multiple pairs of conductive ring pairs 2 are all evenly distributed in sequence in the circumference. Specifically, the spatial positions of the conductive ring pairs 2 and the magnet pairs 1 can correspond to each other, or they can be as follows: Figure 3 The staggered angle is shown as a certain angle, and the specific staggered angle is designed according to the actual situation and is not limited here.

[0074] It should be noted that the same conductive ring / magnet can be a whole or Figure 8 Being cut into two or more adjacent ones, the form of being cut into two or more should be regarded as one, so in actual use, cutting a conductive ring / magnet into multiple forms cannot circumvent the protection scope of this solution.

[0075] Specifically, the concept of the trajectory center angle α formed by the two electrical terminals 31 of each independent coil 3 is: the two electrical terminals 31 are located on a plane perpendicular to the rotation axis A, and the angle between the two electrical terminals 31 and the rotation axis A on the plane is the trajectory center angle α. In a motor model, all independent coils preferably have the same coil angle and trajectory center angle, but in practical applications, different coil angles and trajectory center angles should not be excluded from the protection scope of the present invention.

[0076] Further, when the number of magnet pairs 1 / conductive ring pairs 2 is one pair, the coil angle θ is less than or equal to 180 degrees. When the number of magnet pairs 1 / conductive ring pairs 2 is two or more pairs, the relationship between the coil angle θ and the number of magnet pairs / conductive ring pairs is:

[0077]

[0078] N is the number of magnet pairs 1 or conductive ring pairs 2.

[0079] The independent coils 3 are all obtained by winding the enameled wire on any two winding slots of the iron core. The coil angle refers to the angle occupied by the coil on the 360-degree circumference of the iron core, and the coil angle θ of each independent coil is ideally:

[0080]

[0081] m is the number of winding slots spanned by an independent coil;

[0082] M is the number of winding slots in the core.

[0083] like Figure 4As shown, when the core has 12 winding slots, the coil angle of the independent coil 3 is 30(m+1), as shown in FIG. Figure 4 In the figure, the number of winding slots spanned by independent coils L4 and L6 is 5, and the coil angle is 180 degrees, that is, the coil occupies an angle of 180 degrees on the 360-degree circumference of the core; the number of winding slots spanned by independent coil L7 is 2, and the coil angle is 90 degrees, that is, the coil occupies an angle of 90 degrees on the 360-degree circumference of the core. In practical applications, the coil angle θ is generally not absolutely equal to

[0084] Rather

[0085] Preferably, the relationship between the coil angle θ and the number of magnet pairs 1 / conductive ring pairs 2 is:

[0086]

[0087] The center angle α of the trajectory formed by the two electrical terminals of each independent coil is:

[0088] When the number of magnet pairs / conductive ring pairs is one pair, α≤180,

[0089] When the number of magnet pairs / conductive ring pairs is greater than one pair, α<360 / N,

[0090] And α>β, where β represents the vacant arc between the effective segments of adjacent conductive rings.

[0091] The coil angle and the trajectory center angle α of each independent coil 3 may be the same or different, but are preferably the same or similar.

[0092] When put into use, preferably in one rotation cycle, at least one independent coil is energized with a rotation angle of 360-2Nβ, that is, the center angle α of the trajectory formed by the two electrical terminals of at least one independent coil is consistent with the arc of the effective section of the conductive ring.

[0093] Further preferably, in one rotation cycle, all independent coils are in a powered state with a rotation angle of 360-2Nβ, that is, the center angle α of the trajectory formed by the two electrical terminals of all independent coils is consistent with the arc of the effective section of the conductive ring.

[0094] Preferably, in one rotation cycle, the energization angle of at least one independent coil approaches 360 degrees, which means that the vacant arc between all adjacent effective segments of the conductive ring approaches zero degree to satisfy the energization angle approaching 360 degrees, and the trajectory center angle α of at least one independent coil is consistent with the arc of the effective segment of the conductive ring.

[0095] The approach here means that the deviation difference from 360 degrees (zero degrees) and 360 degrees (zero degrees) is within a very small range, such as 1 degree, 2 degrees, 5 degrees, 10 degrees and other small angle ranges.

[0096] Two adjacent conductive rings can be separated by an insulating film to make the vacant arc approach zero. The thinner the insulating film is, the better. The power-on angle refers to the angle occupied by the independent coil in the power-on state during one rotation (360 degrees).

[0097] Further preferably, in one rotation cycle, the energized angle of all independent coils approaches 360 degrees infinitely. That is, the vacant arc between all adjacent effective segments of the conductive ring approaches zero. And the trajectory center angle α of all independent coils is consistent with the arc of the effective segment of the conductive ring. It is also possible to further make the coil angle the same as or similar to the trajectory center angle, and similar means that the angle difference between the trajectory center angle α and the coil angle θ is less than a preset difference, and the preset difference can be 50 degrees, 30 degrees, 20 degrees or 10 degrees.

[0098] The following describes the number of magnet pairs 1 / conductive ring pairs 2 using one, two, and three pairs respectively:

[0099] like Figure 5 The figure shows a situation where three independent coils are arranged. Those skilled in the art can set the coil angle of each independent coil and the positional relationship between the coils according to actual conditions.

[0100] When the number of magnet pair 1 / conductive ring pair 2 is one pair, such as Figure 6 As shown, the coil angle θ is preferably 180 degrees, and the trajectory center angle α is preferably 180 degrees. When put into use, due to the process and the number of core winding slots, it can be as close to 180 degrees as possible, such as 170 degrees. Figure 6 As shown, when there are multiple independent coils, such as three independent coils, the three independent coils can be cross-distributed circumferentially with the rotation axis A as the center line. Figure 6 State, the three independent coils L4, L5 and L6 are all in the energized state, and the three independent coils are connected in parallel. During the rotation process, the three independent coils 3 are always in the energized state in most cases, unless one of the electrical terminals 31 moves to the gap between the positive conductive ring and the negative conductive ring. When the arc of the two conductive rings approaches 180 degrees (that is, the arc of the gap approaches zero), the time passing through the gap can be ignored, so that all independent coils 3 can work full-time. Of course, if more coils are needed, independent coils 3 can be directly added, and the added independent coils 3 are all connected in parallel with the remaining independent coils 3.

[0101] like Figure 9-11As shown, when the number of magnet pairs / conductive ring pairs is two, three independent coils 3 can also be set, the coil angle θ is preferably 90 degrees, the trajectory center angle α is preferably 90 degrees, and the conductive ring curvature is close to 90 degrees. When put into use, all three can be as close to 90 degrees as possible, and the three can be the same or different. Three independent coils L7, L8, and L9 can be set in sequence. Of course, more independent coils can be set when put into use; when the number of magnet pairs 1 / conductive ring pairs 2 is three, the coil angle θ is preferably 60 degrees, the trajectory center angle α is preferably 60 degrees, and the conductive ring curvature is close to 60 degrees. When put into use, all three can be as close to 60 degrees as possible.

[0102] like Fig.12 and 13 As shown, the effect of the coil parallel connection scheme of this scheme is analyzed and explained below:

[0103] by Figure 7 A motor model with a pair of magnets and two pairs of coils arranged at a 90-degree angle in space is used to compare the parameters of each group with those of a traditional motor:

[0104] (I) Analysis at the same current i value:

[0105] loss:

[0106] P 传 =i 2 R

[0107]

[0108] Torque:

[0109] T 传 =T 新 =Ci

[0110] P 传 is the traditional motor loss; P 新 is the motor loss of this scheme; R is the resistance; T 传 is the torque of the traditional motor; T 新 is the motor torque of this scheme; C is a constant; i is the current; R is the resistance.

[0111] Conclusion under the same current:

[0112] ① Loss power consumption, this solution is 50% less than traditional motors

[0113] ②The torque output is the same.

[0114] (ii) Analysis under the same voltage U:

[0115] loss:

[0116]

[0117]

[0118] Torque:

[0119]

[0120]

[0121] Conclusion under the same voltage: loss and torque output are both 1 times greater than traditional motors.

[0122] (III) Loss under the same torque T:

[0123] loss:

[0124]

[0125]

[0126] Same torque T 新 =T 传

[0127] Ci1=2Ci2, that is, i1=2i2, that is

[0128] Conclusion: Under equal torque, the loss of traditional motor is twice as large as that of the motor in this solution.

[0129] The above takes two independent coils as an example. The more independent coils are arranged, the more obvious the above advantages are, which will not be elaborated here.

[0130] This solution changes the traditional current switching method and current connection method. The power-on time of each independent coil 3 is longer, and the time that the magnet pair 1 acts on each independent coil 3 is correspondingly longer. Moreover, the switching of the current direction of any coil will not affect the working state of other coils 3. In theory, the magnet pair of this solution can always act on all the distributed coils of the rotor, that is, it can always have a force output on all independent coils, effectively improving the working efficiency of the motor. In addition, all coils of this motor model are set in parallel, which can greatly reduce the motor loss under the premise of unchanged torque compared with traditional motors.

[0131] Embodiment 2

[0132] At present, there are two ways to power the motor, one is 0-positive voltage power supply, such as 0-5V, 0-35V, etc., and the other is negative voltage-positive voltage power supply, such as -2.5V-2.5V, -12V-12V, etc. Take 0-5V and -2.5V-2.5V as examples, in the first embodiment, when put into use, the positive conductive ring is connected to the 5V power supply, and the negative conductive ring is grounded to realize 0-5V power supply. In this embodiment, the positive conductive ring is connected to the 2.5V power supply, and the negative conductive ring is connected to the -2.5V power supply. Of the two electrical terminals 31 of each independent coil 3, one is used for sliding and alternating contact with all positive conductive rings and negative conductive rings, and the other is used for fixed or sliding contact with the grounded electric ring. When the grounded electric ring is fixedly contacted, the grounded electric ring rotates with the rotor. In this embodiment, the grounded electric ring is preferably contacted with the sliding grounded electric ring, and the grounded electric ring does not rotate. When put into use, one of the two electrical terminals 31 of each independent coil 3 is always in contact with the grounding ring, and the other changes the conductive ring it contacts by sliding contact. When the other electrical terminal 31 contacts the -2.5V conductive ring, the voltage of the independent coil 3 is -2.5V, and when the other electrical terminal 31 contacts the 2.5V conductive ring, the voltage of the independent coil 3 is 2.5V. At this time, since one of the electrical terminals 31 is always in contact with the grounding ring, the electrical terminal 31 can be located at any position of the grounding ring, so the center angle of the formed trajectory can be any angle, and the electrical terminals 31 of all independent coils 31 that are in contact with the grounding ring can be merged into the same one. The concept of the center angle α of the trajectory at this time is: the two electrical terminals are axially translated along the rotation axis A to the same plane perpendicular to the rotation axis A, and then the angle between the two electrical terminals and the rotation axis A on the plane is the center angle α of the trajectory. The grounding ring can be set on the axial outside of the shaft, and is fixed to the motor housing together with the conductive ring at the end of the conductive ring away from the coil. The center of the grounding ring and the common center of the conductive ring are both on the rotating axis A.

[0133] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0134] Although the terms such as magnet pair 1, conductive ring pair 2, coil 3, and electrical terminal 31 are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A parallel motor model structure, comprising a rotor and a stator, characterized in that: The rotor comprises at least two independent coils which are independent of each other; The stator comprises at least one pair of magnets and at least one pair of conductive rings consisting of a positive conductive ring and a negative conductive ring, each pair of magnets comprises a first magnet and a second magnet, and the N pole of the first magnet and the S pole of the second magnet are respectively used to act on independent coils that are energized; Each independent coil has two electrical terminals, one of which is used to electrically connect to the conductive ring pair, and the other is used to electrically connect to the conductive ring pair or to electrically connect to the grounded electrical ring, and the conductive ring electrically connected to the conductive ring pair is changed by the rotation of the rotor; And in one rotation cycle, there is a moment when at least two independent coils are connected in parallel with each other.

2. The parallel motor model structure according to claim 1, characterized in that: In one rotation cycle, there are moments when at least three / four / five / six independent coils are connected in parallel with each other; And in each rotation period, there are at least two / three / four / five / six independent coils connected in parallel with each other for a time period greater than 1 / Z rotation period, where Z is equal to 2, 3, 4 or 5; The two electrical terminals are used to electrically connect the conductive ring pair, and the positive conductive ring in the conductive ring pair is used to connect the positive power supply, and the negative conductive ring is used to ground; Alternatively, one of the electrical terminals is used to electrically connect to a grounded electrical ring, and the positive conductive ring in the conductive ring pair is used to connect to a positive power source, and the negative conductive ring is used to connect to a negative power source; The electrical connection terminal directly or indirectly slides and contacts the grounding electric ring / conductive ring pair during the rotation process to achieve electrical connection with the grounding electric ring / conductive ring pair.

3. The parallel motor model structure according to claim 2, characterized in that: The number of the magnet pairs is consistent with the number of the conductive ring pairs, and when there are multiple magnet pairs and multiple conductive ring pairs, the multiple magnet pairs are sequentially distributed in the circumferential direction, and the multiple conductive ring pairs are sequentially distributed in the circumferential direction; When the number of magnet pairs / conductive ring pairs is one pair, the coil angle θ is less than or equal to 180 degrees; when the number of magnet pairs / conductive ring pairs is greater than one pair, the relationship between the coil angle θ and the number of magnet pairs / conductive ring pairs is: N is the number of magnet pairs / conductive ring pairs.

4. The parallel motor model structure according to claim 3 is characterized in that: The relationship between the coil angle θ and the number of magnet pairs / conductive ring pairs is: The center angle α of the trajectory formed by the two electrical terminals of each independent coil is: When the number of magnet pairs / conductive ring pairs is one pair, α≤180, When the number of magnet pairs / conductive ring pairs is greater than one pair, α<360 / N, And α>β, where β represents the vacant arc between the effective segments of adjacent conductive rings.

5. The parallel motor model structure according to claim 4, characterized in that: The trajectory center angle α is equal to the coil angle θ, or the angle difference between the trajectory center angle α and the coil angle θ is less than a preset difference; The conductive rings are evenly distributed in the circumferential direction, and the vacant arcs between the effective sections of adjacent conductive rings are all smaller than the set angle; And the preset difference is 50 degrees, 30 degrees, 20 degrees or 10 degrees; The setting angle is 30 degrees, 20 degrees, 10 degrees or 5 degrees.

6. A motor operation method according to any one of claims 1 to 5, characterized in that: include: A. All electric rings are energized, and the two electrical terminals are electrically connected to at least two independent coils of electric rings with different polarities and energized in parallel; And the electric ring includes a positive conductive ring and a negative conductive ring; or the electric ring includes a positive conductive ring, a negative conductive ring and a grounding electric ring; B. All the independent coils that are energized form magnetic fields respectively, and the formed N pole / S pole is attracted by the S pole of the nearby second magnet / N pole of the first magnet to drive the rotor to rotate; C. During the rotation of the rotor, at least one electrical terminal of each group of independent coils is electrically connected to the positive conductive ring and the negative conductive ring in sequence through the rotation of the rotor to achieve coil commutation.

7. The motor operation method of the parallel motor model structure according to claim 6, characterized in that: In step A, all the electric rings are energized, and two electrical terminals are electrically connected to at least three / four / five / six independent coils of electric rings of different polarities and energized in parallel; In step C, one electrical terminal of each independent coil is electrically connected to the positive conductive ring and the negative conductive ring in sequence by the rotation of the rotor, and the other electrical terminal is always electrically connected to the grounding electrical ring to realize coil commutation; or, two electrical terminals of each independent coil are electrically connected to the positive conductive ring and the negative conductive ring in sequence by the rotation of the rotor to realize coil commutation; The electrical connection end point directly or indirectly slides and contacts the grounding electric ring / conductive ring pair during the rotation process to achieve electrical connection with the grounding electric ring / conductive ring pair; In one rotation cycle, at least one independent coil has a rotation angle of 360-2Nβ and is in an energized state; Where β is the vacant arc between the effective segments of adjacent conductive rings, and N is the number of conductive ring pairs / magnet pairs.

8. The motor operation method of the parallel motor model structure according to claim 7, characterized in that: In one rotation cycle, all independent coils have a rotation angle of 360-2Nβ in the energized state.

9. The motor operation method according to any one of claims 6 to 8, characterized in that: In one rotation cycle, the energized angle of at least one independent coil approaches 360 degrees.

10. The motor operation method of the parallel motor model structure according to claim 9, characterized in that: In one rotation cycle, the energized angle of all independent coils approaches 360 degrees; And the approach range is within 5 degrees, 10 degrees or 20 degrees.

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