CN107689699A - A kind of permanent-magnet brushless DC electric machine of novel printing winding - Google Patents

A kind of permanent-magnet brushless DC electric machine of novel printing winding Download PDF

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Publication number
CN107689699A
CN107689699A CN201710899655.0A CN201710899655A CN107689699A CN 107689699 A CN107689699 A CN 107689699A CN 201710899655 A CN201710899655 A CN 201710899655A CN 107689699 A CN107689699 A CN 107689699A
Authority
CN
China
Prior art keywords
stator
winding
permanent
rotor
working
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710899655.0A
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Chinese (zh)
Inventor
年珩
张洪义
许世光
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Shun Ting Technology Co Ltd
Original Assignee
Zhejiang Shun Ting Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Shun Ting Technology Co Ltd filed Critical Zhejiang Shun Ting Technology Co Ltd
Priority to CN201710899655.0A priority Critical patent/CN107689699A/en
Publication of CN107689699A publication Critical patent/CN107689699A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K21/00Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/04Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/26Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of printed conductors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/04Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28Layout of windings or of connections between windings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2203/00Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/06Machines characterised by the wiring leads, i.e. conducting wires for connecting the winding terminations

Abstract

The invention discloses a kind of permanent-magnet brushless DC electric machine using novel printing winding, it includes the p-m rotor of stator and axial charging made of multilayer board, wherein stator prints winding scheme per phase winding using quadrangle, by this printing winding, the axial dimension and cost of manufacture of motor are substantially reduced.Compared to traditional printed motor, the quadrangle printing winding scheme that the present invention uses eliminates the invalid winding in end, improves motor operation efficiency, reduce motor temperature rise.And its counter potential waveform is in sine wave, it is easy to use vector control mode controlled motor.

Description

A kind of permanent-magnet brushless DC electric machine of novel printing winding
Technical field
The invention belongs to design of electrical motor correlative technology field, more particularly to a kind of DC permanent-magnetic brushless of novel printing winding Motor.
Background technology
Traditional permanent-magnet brushless DC electric machine is radial magnetic field motor mostly, and stator is all by coil and iron core structure Into motor volume is big, more heavy, and complicated inserting-coil process causes motor complex manufacturing technology, production cycle length, and material disappears Consumption is more, and cost is higher.
The winding of printed-armature motor is different from the coil windings of conventional motors, and it is by etch, electrochemical deposition The chemical methodes such as method, electrochemistry transfer method, print and form on copper foil plate.Permanent-magnet brushless DC electric machine using printing winding exists The limitation of conventional motors is breached in terms of structure design, motor uses axial magnetic field direction, due to that need not use conventional motors Stator core, motor volume, weight can be greatly reduced, and improve the operational efficiency and overload capacity of motor;In intelligent control In terms of system, it is possible to achieve long-range intelligent control;Meanwhile there is no line process under stator winding in motor production process, it is produced into This is less than conventional brushless DC motor again, therefore in terms of overall performance, better than conventional motors.
The operation principle for printing winding permanent magnet brshless DC motor is identical with conventional permanent magnet brushless direct current generator.Its feature It is that starting torque is big, speed-regulating range width, operational efficiency height etc..The design key for printing winding permanent magnet brshless DC motor is stator The connected mode of printed circuit board (PCB) winding, in terms of stator printed circuit board (PCB) Winding Design, although patent document A kind of printed circuit board (PCB) winding connection is given in CN104659993A, but because this printed circuit board stator is using concentric Winding connection, it is this with one heart winding conductor using circular arc end line connect, this circular arc end line have amount of copper consuming greatly, Torque output, the increase loss of electric machine are not produced, improve the shortcomings of motor temperature rise.Also document arranges print in the form of wave winding Printed circuit board winding, but still circular arc end line connection conductor must be used.In addition, using concentric winding and wave winding form Stator printed circuit board (PCB), winding back emf waveform show as square, can not realize the excellent of electric machine controller sine wave control More performance.
The content of the invention
It is an object of the invention to for the above-mentioned technical problem present in prior art, the invention provides a kind of new The printing Winding Design scheme based on quadrangle conductor, can reduce permanent-magnet brushless DC electric machine volume, manufacturing cost, improve fortune Line efficiency, and counter potential waveform may be designed as sine wave, be easy to implement high performance vector control mode, improve the property of motor Energy and operating efficiency.
To solve the above problems, the present invention provides following technical scheme:
A kind of permanent-magnet brushless DC electric machine of novel printing winding, including motor housing, be fixedly installed in motor housing and determine Son, rotate the rotor assembly for being arranged in motor housing;Stator is printed circuit board arrangement, including working conductor layer and connection conductor Layer;Coiling unit is arranged in quadrangle in working conductor layer, the coiling unit per extremely every phase winding by multiple quadrangles of stator It is in series, every phase winding under different numbers of poles connects to form a phase winding by connecting conductor layer in the form of serial or parallel connection.
Preferably, the working conductor layer is two, and quadrangle coiling unit is located in two Working conductors sides of left L-shaped On one of working conductor layer, quadrangle coiling unit is located at another work in two Working conductors sides of right L-shaped and led On body layer, two Working conductors of left L-shaped are in series while with outer end during the two of right L-shaped Working conductors by external diameter via, The inner is in series by internal diameter via, and so as to form quadrangle coiling unit, the winding structure only needs two working conductor layers i.e. Can being printed on each extremely each phase winding on printed circuit board (PCB), can reduce stator thickness, simplify processing technology, reduction is manufactured into This.Wherein, in quadrangle coiling unit in left L-shaped two Working conductors sides intersection point with right L-shaped two Working conductors The distance between the intersection point on side is not more than the pole span of motor, is advantageously implemented the control of electric machine controller sine wave, is easy to using arrow Measure control mode controlled motor.
Further, the connecting conductor layer includes some connection conductor sides, and stator includes just eventually per extremely every phase winding End and negative terminal, the positive terminal per the negative terminal extremely per phase winding with the phase consecutive roots winding are electrically connected by the connection conductor side Connect;This programme is to be connected in a series arrangement per extremely every phase winding, i.e., the circuitry number that is often in parallel is 1, and above-mentioned winding configuration mode is One of which scheme, the circuitry number that is often in parallel can also be more than 1, and other windings connect allocation plan also in the protection domain of patent It is interior.
The stator also includes some perpendicular to the working conductor layer and the via conductor pin of the connecting conductor layer, mistake Hole conductor pin be used for quadrangle coiling unit in left L-shaped two Working conductors while while in two Working conductors of right L-shaped it Between electrical connection, and for being electrically connected between the connection conductor side per the positive terminal extremely per phase winding and/or negative terminal Connect.
Preferably, hall position sensor is additionally provided with the printed circuit board (PCB) of the stator, can not also use Hall certainly Position sensor, stator can lead to direct current, also can indirect current, the stator includes three-phase windings, three-phase windings connection knot Structure is identical, and in combination, spatially 120 degree of electrical angles of mutual deviation, hall position sensor are three to three-phase windings between each other, It is respectively arranged at the position of center line of each phase winding.
Wherein, stator is stacked and formed by multiple working conductor layers and multiple connecting conductor layer, each working conductor layer and every Individual connecting conductor layer is flat structures, has dielectric substrate layers between every layer;The rotor assembly is including drive shaft and admittedly It is provided with the central circular hole passed through for drive shaft due to the first rotor in drive shaft and the second rotor, in the middle part of the stator, first Rotor and the second rotor are located at the both sides of the stator respectively;The first rotor and second rotor include rotor back iron With fan-shaped permanent magnet array, the permanent magnet quantity that permanent magnet array includes is even number and at least two.
Wherein, the material that the rotor back iron is laminated by silicon steel punched chip or monoblock has magnetic conduction ability is made, permanent magnet Material can use the combination of the permanent-magnet material such as ferrite, SmCo, neodymium iron boron or above-mentioned three kinds of materials, permanent magnet Surface Mount or be embedded in In rotor back iron.The permanent magnet of the first rotor is so arranged relative to the bitrochanteric permanent magnet, that is, causes magnetic flux Line passes through stator, adjacent permanent magnet N poles and the distribution of S poles alternating polarity along perpendicular to the direction of the stator plane, i.e., in NS- SN is distributed.
The stator and the rotor assembly may be configured as external stator/internal rotor or outer rotor/default minor structure, also may be used It is arranged to single stator/single rotor, single stator/birotor, bimorph transducer/single rotor, bimorph transducer/triple-spool, three stators/birotor knot Structure.The motor can be used as pure generating, pure electronic or generating-electric assembling operation.
Beneficial effects of the present invention compared with prior art:
A kind of permanent-magnet brushless DC electric machine of novel printing winding construction of the present invention, wherein stator use four per phase winding Side shape printing winding scheme, by this printing winding, the axial dimension and cost of manufacture of motor are substantially reduced, compared to tradition Circular arc end line printing winding stator, the present invention cancels the invalid winding in end, reduces amount of copper consuming, while reduce motor temperature Rise;And its counter potential waveform is in sine wave, it is easy to use vector control mode controlled motor.
Brief description of the drawings
Fig. 1 is the permanent-magnet brushless DC electric machine of novel printing winding construction involved in the present invention, and one of which implements shape The installation diagram of formula;
Fig. 2 is the 3 dimensional drawing of shown stator printing winding;
Fig. 3 is the view of stator shown in Fig. 2, wherein eliminating a phase winding;
Fig. 4 is the view of stator shown in Fig. 2, wherein eliminating two phase windings;
Fig. 5 is the plan of shown stator printing winding;
Fig. 6 is the preferred arrangement of shown stator printing winding.
Embodiment
With reference to Figure of description and embodiment, the specific embodiment of the present invention is described in further detail:
Fig. 1 shows one embodiment of the present of invention.The permanent-magnet brushless DC electric machine of the novel printing winding construction, including:Two Individual motor housing 1 and 7, the fan-shaped permanent magnet array 3 and 8 of drive shaft 5, two rotor back irons, 4 and 6, two groups of axial magnetizeds, printing Circuit board stator 2, bearing 9.
Being shared referring now still to Fig. 1, in permanent magnet array 3 and 8 respectively has four pieces of permanent magnets, and every piece of permanent magnet magnetizes vertically, Permanent magnet material can use the combination of the permanent-magnet materials such as ferrite, SmCo, neodymium iron boron or above-mentioned three kinds of materials, permanent magnet array 3 It can be fixed on respectively with Surface Mount or inline mode in rotor back iron 4 and 6 with 8, the embodiment is carried on the back using inline mode embedded in rotor On iron 4 and 6.Permanent magnet array 3 and rotor back iron 4 form the first rotor, and permanent magnet array 8 and rotor back iron 6 form second turn Son, the permanent magnet of the first rotor need to cause magnetic flux line to be printed along perpendicular to stator relative to bitrochanteric permanent magnet arrangement mode The flat structures direction of circuit board passes through stator, adjacent permanent magnet N poles and the distribution of S poles alternating polarity, i.e., is distributed in NS-SN. Certain permanent magnet array 3,8 is also configured to the magnetic pole of other quantity, such as comprising two, six, eight, 16 or can make The magnetic pole for any other even number produced.
The first rotor and the second rotor are fitted together by drive shaft 5, and drive shaft both ends are fixed on two by bearing 9 On motor housing 1 and 7.
With reference to the 3 dimensional drawing of Fig. 1 and Fig. 2 stators printing winding, stator printed circuit board 2 is sheet form multilaminate structure, its Outward flange is in octagon, can also use circle, square or the other shapes for being adapted to some concrete applications.Stator printed circuit board (PCB) 2 number of plies is 5, naturally it is also possible to using the configuration of the arbitrary integer layers such as such as 2,4,6 layers of other numbers of plies.In the preferred embodiment In, be for upper two layers working conductor layer, the winding of first layer be in quadrangle coiling unit in "<" shape(Left L-shaped)Two work Conductor side, the second layer be quadrangle coiling unit in ">" shape(Right L-shaped)Two Working conductors sides, upper and lower two working conductor layer By the via for being present in internal-and external diameter(Internal diameter via, external diameter via)Electrical connection, wherein left L-shaped conductor point of intersection is led with right L-shaped The distance of body point of intersection is not more than the pole span of motor.In the preferred embodiment, left L-shaped conductor side point of intersection and right L-shaped conductor The distance of side point of intersection is integer pole span, the i.e. pole span equal to motor.Third and fourth, five layers be connecting conductor layer, per extremely per phase four While the negative terminal of shape winding and the positive terminal of the quadrangle winding of the phase consecutive roots by third and fourth, five layers of connection conductor while Electrical connection, i.e., per extremely being connected per phase quadrangle winding conductor, parallel branch number is 1.Wherein quadrangle coil totally 48, formed Three-phase and quadrupole.Above-mentioned winding connection, quantity and number of pole-pairs selection are only one of which preferred embodiments, and other windings connect Mode, quantity and number of pole-pairs is connect to select also in the protection domain of patent.
Fig. 2 shows the stereogram of stator three-phase printing winding, and 1A, 1B, 1C are A, B, C three-phase of the first working conductor layer Left L-shaped Working conductors side, 2A, 2B, 2C are the right L-shaped Working conductors side of A, B, C three-phase of the second working conductor layer.11 represent print Brush winding positioned at connecting conductor layer, i.e., third and fourth, five layers of connection conductor side, for connecting per the negative end extremely per phase winding End and positive terminal.Between first and second working lining conductor, and between working lining conductor and articulamentum conductor, pass through via conductor Post 10 electrically connects.
Fig. 3 is shown remove A phases after, the arrangement of B, C phase winding, wherein 1B, 1C be the first working conductor layer B, C Failing to agree L-shaped Working conductors side, 2B, 2C are the right L-shaped Working conductors side of B, C phase of the second working conductor layer, and 10 be via conductor pin, 11 be the connection conductor side in connecting conductor layer.
Fig. 4 is shown remove A, B phase after, the arrangement of C phase windings, 1C be the first working conductor layer left L-shaped C phase works Make conductor side, 2C is the right L-shaped C phase Working conductors side of the second working conductor layer, and 10 be via conductor, and 11 be in connecting conductor layer Connection conductor side.Conductor side 11 is wherein connected to be not necessarily intended to arrange by diagramatic way, can be to save copper, the convenient principle such as draw Optimize arrangement.
Fig. 5 shows the plan of stator printing winding, illustrates the new winding configuration from another viewing angles, α, β, γ represent the active conductor of A, B, C three-phase quadrangle winding cutting magnetic field, and 11A, 11B, 11C represent A, B, C three-phase Connection conductor side in quadrangle winding, i.e. end conductor.When stator plate need install hall position sensor, phase can be arranged on At the adjacent respective position of center line of three-phase windings.In the preferred embodiment, three position sensors are placed on shown in X, Y, Z At dotted line.
Fig. 6 shows a kind of preferred arrangement of stator printing winding.The figure only shows that a phase winding is distributed, and it has four Individual working conductor layer, the conductor of different operating conductor layer same position are in parallel by via, and 1D represents the first working conductor layer Left L-shaped conductor side, 2D represents the right L-shaped conductor side of the second working conductor layer, and the L-shaped conductor side of it and 1D relevant positions is formed Quadrangle conductor coils.3D represents the left L-shaped conductor side of the 3rd working conductor layer, and 4D represents the right L-shaped of the 4th working conductor layer Conductor side, its L-shaped conductor with 2D relevant positions form quadrangle conductor coils.Four sides that first and second working conductor layer is formed Quadrangle conductor on shape conductor, with third and fourth working conductor layer same position, is in parallel by the via at both ends, to increase It is passed through the current value of stator.11 represent the connection conductor side of connecting conductor layer, i.e. end conductor, and 10 be via conductor pin.
The above described is only a preferred embodiment of the present invention, any limit not is made to the technical scope of the present invention System, therefore any subtle modifications, equivalent variations and modifications that every technical spirit according to the present invention is made to above example, In the range of still falling within technical scheme.

Claims (10)

1. a kind of permanent-magnet brushless DC electric machine of novel printing winding, including motor housing, it is fixedly installed in motor housing Stator, rotation are arranged in the rotor assembly of motor housing;Stator is printed circuit board arrangement, including working conductor layer and connection are led Body layer;It is characterized in that:Coiling unit is arranged in quadrangle in working conductor layer, and every extremely every phase winding of stator is by multiple four sides The coiling unit of shape is in series, and every phase winding under different numbers of poles connects shape by connecting conductor layer in the form of serial or parallel connection Into a phase winding.
2. the permanent-magnet brushless DC electric machine of novel printing winding according to claim 1, it is characterised in that:The work is led Body layer is two, and quadrangle coiling unit is located in one of on working conductor layer in two Working conductors sides of left L-shaped, four sides Shape coiling unit is located on another working conductor layer in two Working conductors sides of right L-shaped, is in quadrangle coiling unit Two Working conductors of left L-shaped while intersection point with the distance between intersection point during two Working conductors in right L-shaped no more than electricity The pole span of machine.
3. the permanent-magnet brushless DC electric machine of novel printing winding according to claim 2, it is characterised in that:The connection is led Body layer includes some connection conductor sides, and stator includes positive terminal and negative terminal per extremely every phase winding, per negative extremely per phase winding Terminal is electrically connected with the positive terminal of the phase consecutive roots winding by the connection conductor side;
The stator is also led including some perpendicular to the working conductor layer and the via conductor pin of the connecting conductor layer, via Scapus be used for quadrangle coiling unit in left L-shaped two Working conductors between while in the two of right L-shaped Working conductors Electrical connection, and for the electrical connection per the positive terminal extremely per phase winding and/or negative terminal between the connection conductor side.
4. the permanent-magnet brushless DC electric machine of novel printing winding according to claim 1, it is characterised in that:The stator Hall position sensor is additionally provided with printed circuit board (PCB).
5. the permanent-magnet brushless DC electric machine of the novel printing winding according to claim 1 or 4, it is characterised in that:It is described fixed Attached bag contains three-phase windings, and the three-phase windings attachment structure is identical, three-phase windings mutual spatially mutual deviation 120 in combination Spend electrical angle.
6. the permanent-magnet brushless DC electric machine of novel printing winding according to claim 1, it is characterised in that:Stator is by multiple Working conductor layer and multiple connecting conductor layer stack to be formed, and each working conductor layer and each connecting conductor layer are flat knot Structure, there are dielectric substrate layers between every layer;
The rotor assembly includes drive shaft and the first rotor and the second rotor that are fixed in drive shaft, the stator middle part Provided with the central circular hole passed through for drive shaft, the first rotor and the second rotor are respectively positioned at the both sides of the stator;
The first rotor and second rotor include rotor back iron and fan-shaped permanent magnet array, what permanent magnet array included Permanent magnet quantity is even number and at least two.
7. the permanent-magnet brushless DC electric machine of novel printing winding according to claim 6, it is characterised in that:The rotor back of the body The material that iron is laminated by silicon steel punched chip or monoblock has magnetic conduction ability is made, and permanent magnet material can use ferrite, SmCo, neodymium The combination of the permanent-magnet materials such as iron boron or above-mentioned three kinds of materials, permanent magnet Surface Mount or is embedded in rotor back iron.
8. the permanent-magnet brushless DC electric machine of novel printing winding according to claim 6, it is characterised in that:Described first turn The permanent magnet of son is so arranged relative to the bitrochanteric permanent magnet, that is, causes magnetic flux line along perpendicular to the stator plane Direction pass through stator, adjacent permanent magnet N poles and the distribution of S poles alternating polarity.
9. the permanent-magnet brushless DC electric machine of novel printing winding according to claim 6, it is characterised in that:The stator and The rotor assembly may be configured as external stator/internal rotor or outer rotor/default minor structure, may be alternatively provided as single stator/single-turn Sub, single stator/birotor, bimorph transducer/single rotor, bimorph transducer/triple-spool, three stators/dual-rotor structure.
10. the permanent-magnet brushless DC electric machine of novel printing winding according to claim 1, it is characterised in that:The motor can As pure generating, pure electronic or generating-electric assembling operation.
CN201710899655.0A 2017-09-28 2017-09-28 A kind of permanent-magnet brushless DC electric machine of novel printing winding Pending CN107689699A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710899655.0A CN107689699A (en) 2017-09-28 2017-09-28 A kind of permanent-magnet brushless DC electric machine of novel printing winding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710899655.0A CN107689699A (en) 2017-09-28 2017-09-28 A kind of permanent-magnet brushless DC electric machine of novel printing winding

Publications (1)

Publication Number Publication Date
CN107689699A true CN107689699A (en) 2018-02-13

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109245476A (en) * 2018-10-31 2019-01-18 湖北工业大学 A kind of miniature PCB motor
WO2021139079A1 (en) * 2020-01-10 2021-07-15 浙江盘毂动力科技有限公司 Winding structure of axial flux motor and winding method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109245476A (en) * 2018-10-31 2019-01-18 湖北工业大学 A kind of miniature PCB motor
WO2021139079A1 (en) * 2020-01-10 2021-07-15 浙江盘毂动力科技有限公司 Winding structure of axial flux motor and winding method

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