Background technology
Along with the development of motor, people recognize that common cylinder formula motor exists like problems such as iron core utilization are low, and disc-type electric motor is high, in light weight with its efficient, the characteristics such as steady that turn round, and has obtained the market approval, is used widely.
Application number is that 201010000675.8 Chinese invention patent application discloses a kind of axial magnetic field disc-type electric motor; Its with plain conductor closely and proper alignment turn to absolute coil; A plurality of absolute coils are arranged in a circular electromagnetic array along circular shaft direction interlocking; Use the resin material that adds heat carrier that circular electromagnetic array integral body is sealed moulding admittedly, form absolute coil interlocking electromagnetic array ring, use this electromagnetic array ring as axial magnetic field disc-type electric motor stator.Motor rotor is fixed on a disk on the connection output shaft by what the permanent magnetic material that embeds yoke was formed.Circulating application adds electric current to absolute coil interlocking electromagnetic array in proper order in proper order or in groups, and magnetic field paired on the rotor rotates under the effect of Lorentz force continuously.Yet the motor rotor of this axial magnetic field disc-type electric motor must comprise yoke, and permanent magnetic material is embedded in the yoke, and the single face magnetic that it has only utilized permanent magnetic material causes the electromagnetism utilance not high, and whole stator winding is heavy, and volume is big.In addition, this patent documentation is not considered simultaneously a plurality of disc-type electric motors to be made up situation about using.
Application number is that 200810228120.1 Chinese invention patent application discloses a kind of multi-disc type permanent magnet synchronous motor; It is provided with one group of tray type structure of being made up of single rotor dish and the two stator discs that are located at these rotor disk both sides at least, and wherein the axial distance between stator discs and the rotor disk is the gas length of motor.Two stator discs are separately fixed on front end housing and the rear end cap, and rotor disk is fixed on the motor rotary shaft, and stator discs is that silicon steel sheet is wound into the annular cylinder; Even distribution stator slot above the stator discs; The magnetic structure of rotor adopts every extremely following 2 permanent magnets, and such structure can improve the bulk density of motor, improves the utilance of silicon steel sheet; Reduce generator loss, and help the cooling of motor stator dish.In addition, this type multi-disc type motor can combination in any, and the motor after the combination has strengthened reliability, and even wherein one group of motor breaks down, and all the other motor still can work on, the unlikely paralysis that causes system.This multi-disc type permanent magnet synchronous motor has considered that the double-sided magnetic and a plurality of disc-type electric motor that use rotor make up situation about using; Yet; In this multi-disc type permanent magnet synchronous motor; Its stator is made up of the coil of reeling in silicon steel sheet and the groove thereof, and magnetic loss is bigger, and what still adopt in every group of motor is the influence that each stator discs all receives the single face magnetic of a rotor; Therefore, this multi-disc type permanent magnet synchronous motor have that magnetic loss is big, complex manufacturing technology, volume is big, efficient is not high problem.
Summary of the invention
The purpose of the utility model is to avoid the deficiency of above-mentioned prior art, and a kind of energy-efficient multipath magnetic circuit disc-type electric motor is provided, its can really accomplish simple in structure, volume is little, efficient is high, reliable and magnetic loss is little.
A preferred implementation according to the utility model; The utility model provides a kind of multipath magnetic circuit disc-type electric motor; It comprises: the individual rotor of shell 5, base 7, end cap 6, rotor main shaft 1, bearing 2, (m-1) 3, a m stator winding 4, and m is the positive integer greater than 2; Shell 5 is connected fixing with base 7, end cap 6 is connected fixing with said shell 5, and rotor main shaft 1 assembles through said bearing 2 with end cap 6; (m-1) individual rotor 3 all is connected fixingly with rotor main shaft 1, and rotor and stator winding are spaced, and the end cap that outermost two stator winding are adjacent respectively connects to be fixed; Wherein, Said rotor comprises rotor disk and a plurality of magnet steel; Each magnet steel all runs through rotor disk, makes two magnetic poles of each magnet steel be exposed to the both sides of this rotor disk respectively, and the mode that each magnet steel replaces with magnetic pole in the same side of this rotor disk is arranged on this rotor disk; Said stator winding comprises winding dish and coil array.
According to another preferred implementation of the utility model, said magnet steel is that the cross section is circular or fan-shaped or rectangle or Else Rule or erose column permanent magnet, and the magnet steel quantity on said each rotor disk is even number.
According to the another preferred implementation of the utility model, said rotor, stator adopt resin material or other suitable material to process.
According to the another preferred implementation of the utility model, said resin material comprises that BMC (BMC), epoxy resin or other have the resin material of electrical insulating property.
According to the another preferred implementation of the utility model, said rotor disk is identical with the shape of said winding dish.
According to the another preferred implementation of the utility model, it is Else Rule or erose dish that said rotor disk and said winding dish can form disk, sector disk, parallelogram dish, oblong-shaped disc or card.
According to the another preferred implementation of the utility model, the quantity of said magnet steel and said coil is identical.
According to the another preferred implementation of the utility model, said coil array is made up of a plurality of coil groups that one or more enamelled wire turns to, and forms stator winding with this coil array of resin material enrobed compacted again.
According to the another preferred implementation of the utility model, said resin material comprises that BMC (BMC), epoxy resin or other have the material of electrical insulating property.
According to the another preferred implementation of the utility model, the power output of said motor is applicable to the driving electric motor car.
The multipath magnetic circuit disc type dynamotor of the utility model is simple and compact for structure, volume is little and in light weight, reliable, efficient is high, magnetic loss is little, can form batch process again, greatly reduces production cost.
Description of drawings
From the following detailed description that combines accompanying drawing, will understand the utility model more fully, this accompanying drawing is schematically, and all parts in the light of actual conditions are not shown, and proportionally draws for clarity, wherein:
Fig. 1 is the multipath magnetic circuit disc-type electric motor of clear the utility model for example, wherein has 3 stator winding and 2 rotors;
Fig. 2 is the core component structural upright sketch map of the multipath magnetic circuit disc-type electric motor of clear the utility model for example, wherein has 4 stator winding and 3 rotors;
Fig. 3 is the structure chart that illustrates motor rotor;
Fig. 4 illustrates the structure chart of stator winding.
In the drawings: 1---rotor main shaft, 2---bearing, 3,3-1,3-2---rotor; 4,4-1,4-2,4-3 ... 4-m---stator winding, 5---shell, 6---end cap; 7---base, 8,8-1a, 8-2a, 8-1b---magnet steel, 9,9-1,9-2---rotor disk; 10-1a, 10-1b---coil groups, 11-1---winding dish.
Embodiment
Be described further below in conjunction with the preferred implementation of accompanying drawing the utility model.
Fig. 1 and Fig. 2 show the multipath magnetic circuit disc-type electric motor of the utility model.The multipath magnetic circuit disc-type electric motor of the utility model comprises: shell 5, base 7, end cap 6, rotor main shaft 1, bearing 2, a plurality of rotor 3, a plurality of stator winding 4; Shell 5 is connected fixing with base 7, end cap 6 is connected fixing with said shell 5, and a plurality of stator winding 4 are connected fixing with end cap 6, and rotor main shaft 1 passes through said bearing 2 assemblings with end cap 6, and rotor 3 is connected fixing with rotor main shaft 1.Each parts can connect fixing in the conventional mode, for example bolt etc.Its input and output partly can connect existing power supply and existing acting device, for example electric motor car respectively.
Wherein, Fig. 1 shows the situation with two rotors and three stator winding, and Fig. 2 shows the situation with three rotors and four stator winding.As shown in Figure 2; The multichannel disc-type electric motor of the utility model has four stator winding 4 and three rotors 3; The stator winding 4-1 of the leftmost side is connected fixing with left side end cap 6, the stator winding 4-4 of the rightmost side is connected fixing with right side end cap 6, and rotor 3-1 is sandwiched between stator winding 4-1, the 4-2; Rotor 3-2 is sandwiched between stator winding 4-2, the 4-3, and rotor 3-3 is sandwiched between stator winding 4-3, the 4-4.That is, end cap begins to the right side end cap according to following sequence arrangement: stator winding 4-1, rotor 3-1, stator winding 4-2, rotor 3-2, stator winding 4-3, rotor 3-3, stator winding 4-4 from the left side for stator winding and rotor.
As shown in the figure; With rotor 3-1, rotor 3-2 is example; Magnet steel on rotor 3-1 and the rotor 3-2 runs through rotor disk 9-1,9-2 respectively; Therefore when assembling, the magnet steel in the different rotor dish leans on each other magnetic pole to interact (being that homopolar-repulsion, heteropole are inhaled mutually) and aims at automatically and keep synchronous rotation.For instance; Because magnet steel 8-1a exposes the S utmost point, then exposes the N utmost point on the right side of rotor disk 9-1 in the left side of rotor disk 9-1; And magnet steel 8-2a exposes the S utmost point, exposes the N utmost point on the right side of rotor disk 9-2 in the left side of rotor disk 9-2; Therefore, interact down at magnetic pole, the magnet steel 8-1a on the rotor disk 9-1 (its left side is the N utmost point for the S utmost point, right side) automatically with rotor disk 9-2 on magnet steel 8-2a (its left side is the N utmost point for the S utmost point, right side) aim at and keep synchronous rotation.Hence one can see that, is consistent from the magnet steel 8-1a on the rotor 3-1 with the magnetic line of force direction of the magnet steel 8-2a of corresponding rotor 3-2 with it.Though only marked rotor 3-1,3-2 and upper magnetic steel 8-1a thereof, 8-2a among the figure, should be known in that rotor 3-3 and upper magnetic steel thereof also follow above-mentioned rule, when using more than three rotors, all the other rotors and upper magnetic steel thereof also are like this.
The anode of a plurality of stator winding, negative electrode insert power supply with it after joining end to end and constituting series via; Each stator winding all produces the identical electromagnetic torque of direction; Because each magnet steel on the rotor 3-1 runs through two sides that two magnetic poles of rotor disk 9-1 and each magnet steel all are exposed to rotor disk; Therefore, its can receive simultaneously the stator winding 4-1 that is positioned at its both sides and stator winding 4-2 electromagnetic torque influence and under the action of a magnetic field of two stator winding, rotate.Equally, rotor 3-2 also receive simultaneously the stator winding 4-2 that is positioned at its both sides and stator winding 4-3 electromagnetic torque influence and rotate.By that analogy.
Fig. 3 illustrates the structure of motor rotor 3-1.As shown in the figure; Rotor 3-1 comprises rotor disk 9-1 and a plurality of magnet steel 8-1a, the 8-1b that are evenly arranged in the rotor disk 9-1 ... The quantity of magnet steel should be even number, and each magnet steel is that cross section is a column permanent magnet circular or fan-shaped or rectangle or Else Rule or random geometry, all runs through rotor disk 9-1; Make two magnetic poles of each magnet steel be exposed to two sides of rotor disk 9-1 respectively, thereby can use the double-sided magnetic of each magnet steel.With magnet steel 8-1a is example, and its left surface at rotor disk 9-1 exposes the S utmost point, exposes the N utmost point at the right flank of rotor disk 9-1.And each magnet steel along the circumferential direction is evenly arranged on the rotor disk 9-1 with the mode that the N utmost point and the S utmost point replace in the same side of rotor disk 9-1.For instance, magnet steel 8-1a exposes the S utmost point in the side of rotor disk 9-1, and then magnet steel 8-1b exposes the N utmost point in the same side, by that analogy.In addition, it should be noted that for the multipath magnetic circuit disc-type electric motor that its a plurality of rotor disks (are rotor disk 9-1,9-2 in this example ...) shape identical, the quantity of its upper magnetic steel is identical, and the position of magnet steel also corresponds to each other.Rotor disk can adopt resin material to process, and for example BMC (BMC), epoxy resin or other have the material of electrical insulating property.
Though Fig. 2, the rotor disk shown in 3 are disk, yet it can be the dish of various rules, random geometry for sector disk, parallelogram dish, oblong-shaped disc or card equally.And, though be 12 at the magnet steel number shown in Fig. 2 and Fig. 3, it will be understood by those skilled in the art that its quantity can be more or less, should be even number.
Fig. 4 illustrates the structure of stator winding 4-1.As shown in the figure, stator winding 4-1 comprises winding dish 11-1 and is evenly arranged in the sector (-shaped) coil array among the winding dish 11-1 that this sector (-shaped) coil array is formed for a plurality of sector (-shaped) coil groups 10 that formed by an enamelled wire coiling, like 10-1a, 10-1b ...Each coil groups all is made up of a plurality of coils, and each coil groups all is that the one side from the winding dish extends to another side,, can see same coil groups from winding dish both sides that is.Draw from winding dish 11-1 at the two ends of this enamelled wire, as anode and negative electrode.For the multipath magnetic circuit disc-type electric motor, the shape of its a plurality of stator winding (being stator winding 4-1,4-2,4-3,4-4 in this example) is identical, and identical and position coil of quantity of sector (-shaped) coil also corresponds to each other on it.
In the preferred forms that illustrates, the quantity of sector (-shaped) coil group is identical with magnet steel quantity on the rotor disk, and position corresponding (as shown in Figure 4, as can to have an X-rayed magnet steel from hub of a spool).
When making, make the sector (-shaped) coil group along the circumferential direction evenly arrange earlier, through insulating material, like BMC (BMC), enrobed compacted is processed stator winding again.
In addition; Though stator winding 4-1,4-2,4-3,4-4 shown in the figure are disk; Yet it equally can be for sector disk, parallelogram dish, oblong-shaped disc or card be the dish of various rules, random geometry, but preferably shape is identical with the rotor disk shape.
Though the quantity of the coil groups that illustrates in the drawings is 12, yet it will be understood by those skilled in the art that its quantity can be more or less, preferably consistent with the quantity of magnet steel.
Though fan-shaped coil array is formed by an enamelled wire coiling in this example, yet it will be understood by those skilled in the art that other coiling modes that can adopt prior art, for example use two or a plurality of enamelled wire coilings.
The winding dish can adopt resin material to process, and except BMC above-mentioned, can also adopt epoxy resin or other to have the material of electrical insulating property.
Compare with the motor of the single face magnetic of only using magnet steel in the prior art; The utility model makes two magnetic poles of magnet steel all can receive the influence in energising magnetic field through the double-sided magnetic that utilizes magnet steel, thereby has improved the utilance of magnet steel and obtained bigger rotor torque.
Though with the double-sided magnetic that uses magnet steel in the prior art every group rotor be furnished with the motor of two stator winding and compare; The utility model be spaced through this stator winding, rotor and two rotors between only accompany the structure of a stator winding; Made full use of the electromagnetic torque that stator winding electrifying produces, and the design through a stator winding can all be played a role to the rotor of its both sides, make the quantity of stator winding reduce; Provide cost savings; And,, further reduced production cost because the stator winding of the utility model does not adopt the structure of the silicon steel sheet winding around of traditional stator.
The utility model is not limited to the situation of corresponding three stator winding of above-mentioned two rotors; It can make up according to required output torque; For example according to as the arrangement of above-mentioned preferred embodiment and the motor of corresponding four stator winding of three rotors that are provided with, the motor of four corresponding five stator winding of rotor ... Can have m stator winding and (m-1) individual rotor; Wherein m is the positive integer greater than 2; The stator winding 4-1 of the leftmost side is connected fixing with left side end cap 6, the stator winding 4-m of the rightmost side is connected fixing with right side end cap 6, and each stator winding is spaced with each rotor.Behind each stator winding electrifying, the rotor that is sandwiched in two stator winding receive simultaneously its left and right sides stator winding electromagnetic torque influence and rotate.
It will be understood by those skilled in the art that the utility model is not restricted to the content that illustrates especially and as above describe in detail.But the scope of the utility model comprises modification and the replacement that can expect after the content that aforesaid various combination of features and distortion and those of ordinary skills do not had in having read above stated specification and prior art.
In addition, those skilled in the art also can predict, and this motor can be applied to each field that needs, and for example is used for electric motor car.
Specify
The applicant not only applies for utility model but also applied for patent of invention to same innovation and creation on the same day in the application.