CN106341017A - Disc type unit lamination coreless DC motor - Google Patents
Disc type unit lamination coreless DC motor Download PDFInfo
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- CN106341017A CN106341017A CN201610881158.3A CN201610881158A CN106341017A CN 106341017 A CN106341017 A CN 106341017A CN 201610881158 A CN201610881158 A CN 201610881158A CN 106341017 A CN106341017 A CN 106341017A
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- disc
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- permanent magnet
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/24—Synchronous 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/04—Machines with one rotor and two stators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention discloses a disc type unit lamination coreless DC motor. The disc type unit lamination coreless DC motor comprises a main shaft, the main shaft is successively sleeved by a first bearing, a first stator disc, at least one third stator disc, a second stator disc and a second bearing, the first bearing is sleeved by a first rotor disc, the second bearing is sleeved by a second rotor disc, at least two third rotor discs are clamped between the first rotor disc and the second rotor disc, adjacent third rotor discs are connected through a ferrule, the inner side of the first rotor disc and the inner side of the second rotor disc are each provided with a first groove, the first grooves are internally provided with first permanent magnets, the outer side of the first rotor disc is provided with a solar gear ring used for transmitting torque, the two sides of each third rotor disc are each provided with a second groove, the second grooves are internally provided with second permanent magnets, coils are embedded in the stator discs, and the coils are fixed on the stator discs through limiting devices. The disc type unit lamination coreless DC motor is small in zero-load currents, wide in efficiency interval and large in output torque and is free from hysteresis resistance.
Description
Technical field
The present invention relates to disc type unit stacking iron-core-free direct current generator, belong to the motor field of electric motor car with two wheels.
Background technology
More existing electric bicycle, adopt low speed wheel hub motor, have an advantage in that: power of motor is big, and motor typically need not
Safeguard, transmission efficiency, but because this motor has magnetic hysteresis resistance, weaken or even lose the work(of riding of electric bicycle
Energy.This electric bicycle having lacked function of riding, is can load-carrying go up a slope as the specified work(of its motor of standard configuration
Rate, the far super existing national standards of rated power of most of motor, electric bicycle has gradually gone on motorized easypro formula
Development course.Motorized electric bicycle, traffic accident takes place frequently, it has also become a kind of social concern that need solve.
For overcoming motor to there is magnetic hysteresis resistance, motor manufacturer with all directions motor as representative, it is proposed shaft type
High speed wheel hub motor with teeth.The rated power of this motor meets existing national standards, and is combined with its pinion frame
Mono-directional overrun clutch, the magnetic hysteresis resistance efficiently solving motor is to the impact ridden.The driving of this wheel hub motor with teeth
Motor is exactly substantially the scaled down version of low speed wheel hub motor, uses the dead axle planet circular system of primary speed-down, and speed reducing ratio is usual
For 1:4.3, motor is poor to the adaptability of wheel footpath, and the rotating speed of its motor is usually no more than 1500 revs/min, strictly
Say in meaning that being also not really is high-speed electric expreess locomotive.
Both the above main flow motor, is Nd-Fe-B permanent-magnet D, have that structure is simple, reliable, small volume,
Lightweight, rated efficiency is high, good speed adjustment features the advantages of, but low speed characteristics due to electric bicycle, rode actual
In journey, motor often operates in inefficient interval, and the mileages of continuation of electric bicycle is not high to continue it is difficult to meet masses to raising
The consumption demand of mileage.
China Patent No. 201010247971.8 discloses a kind of ultrathin high-power direct current magnetoelectric motor it is proposed that one kind is excellent
Choosing using the outer ring of flat enamel-covered wire coiling be shaped as sector coil, be superimposed to form coil windings, Single-layer Windings around
After making, coat fixing glue on its surface and be fixed, winding is arranged in the groove of stator frame and by interior trim ring and external pressure
Circle is fixed.Actual situation is that the area of the triangular inner hole of coil needs enough it is ensured that the outer ring of coil is shaped as sector
Greatly, reduce the number of turn of winding, and the coil of such coiling, stator disc low space utilization, magnetic field concentration is poor, for reducing magnetic flux
Loss, permanent magnet must have enough radical lengths, the overlapping region very little of therefore interior trim ring, outer trim ring and fan-shaped winding, only
The coil windings coating fixing glue on surface are easy to as clockwork feed, under the situations such as vibration, heating, damage of falling apart.
And adopt the coil of round conductor coiling, then need to select the low round wire of the less yield strength of line footpath could keep outer loop-shaped
For fan-shaped it is also not possible to produce powerful direct current permanent magnet motor.The heavy-duty motor of high current will necessarily produce more
Heat, it is desirable to have reliable heat sink conception, this invention employs high intensity, high rigidity, heat-resisting, resistance to punching resistance, aging-resistant work
The stator frame of engineering plastics precision injection molding, its thermal conductivity coefficient typically only have 0.04w/mk, and the coil of flat wire coiling around
Group requires the air gap flux density of stator disc both sides strictly equal, is very by the fixing rotor disk of two bearings at flat thin stator frame center
Difficult meeting so high requirement, rotor disk slightly biases flat enamel wire coil and will generate heat, and the higher heat production of rotating speed is more
Many, substantial amounts of heat is enclosed in rotor disk, also cannot be dissipated by the stator frame that engineering plastics are made, its technical scheme itself
Just there is significant deficiency.
China Patent No. 201010289645.3 discloses a kind of energy-saving hub motor, employs only one of which power unit
Disc type iron core-free direct current generator, and using electric vehicle hub as rotor disk, directly by In-wheel motor driving electric motor car, this invention
In wheel hub, also it is combined with version identical disc type iron core-free generator, return for collecting electric energy produced by vehicle braking
Fill to battery, thus playing the effect of energy-conservation.Substantially, the inductance value of disc type iron core-free direct current generator is less, belongs to small-power
The category of motor, its advantage the most prominent is high rpm low torque and no magnetic hysteresis resistance, and the efficiency during slow-speed of revolution is very low, and city
The low speed sightseeing electric car of less 72v voltage is required to power of motor on field, its motor rated power has also required that 5000w,
On electric vehicle hub the pitch circle of hub stud holes to the space between the pitch circle in rim bolt hole be limited, in this limited space
The powerful disc type iron core-free direct current generator of interior setting and disc type iron core-free generator cannot be accomplished, moreover by this invention
Description, the electric motor car of this energy-saving hub motor can only install the solid tyre that can not inflate.
Application number 201310033295.8 discloses a kind of disc type iron core-free permanent magnet DC motor, is the electricity that an axle rotates
Machine, it the technical scheme is that the axial symmetry conical ring Circular Winding that coil windings are made up of multi-section circular arc, conical ring
Most advanced and sophisticated close stator axle center, forms two different internal diameter sizes after the central axis trisection of axial symmetry conical ring, wherein bores
The most advanced and sophisticated internal diameter of shape ring is 2/3rds of another internal diameter, this Circular Winding, and the space availability ratio of stator disc is very low, magnetic field collection
Poly- property is worse, " stator armature winding adopts iron-free core structure, directly has winding to be molded " referring in scheme, also no realizes
Possibility, be to clear unordered winding outlet in injection moulding process, product percent of pass can be very low.This invention " annular around
Interval setting hall magnetic sensor in group ", even more against the scheme of general knowledge, nine pins of three Hall elements, need
Concatenated by wire in the inter-air space of very little, its technology difficulty is very big, and be arranged on the Hall in the middle of Circular Winding
Sensor, its metal pin can generate heat rapidly under action of alternating magnetic field, burns Hall element.
The patent No. 201310310431.3 discloses a kind of disc type iron core-free permanent-magnet brushless DC electric machine, employs and applies for
A kind of number similar annulus winding of disc type iron core-free permanent magnet DC motor disclosed in 201310033295.8, it is away from axle head
Arc radius be proximate to 1.5-2 times of arc radius of axle head, the arc radius of two stringcourse parts are remote from the circular arc of axle head
3-5 times of radius, the space availability ratio of stator disc is very low, and magnetic field concentration is worse, and coil windings lack stopping means, difficult
With limiting coil in axial displacement；It is straight that this invention motor employs a kind of double dynamical iron-core-free of disc type of outer rotor case rotation
Stream motor, goal of the invention is indefinite, and the specific aim of four o shape sealing rings of setting is not strong, and motor lacks PTO and consolidates
Determine device, motor shaft also seemingly had using two kinds of totally different bearings of specification improper, motor adopts no position hall position sensor,
During startup, motor occurs shake hysteresis phenomenon.
Content of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of disc type unit to be laminated iron-free
Core direct current generator, motor output torque is big, and rated power is high, wide between high efficient area, is electric motor car with two wheels wheel hub motor with teeth
Motor, drives electric motor car with two wheels after the planet circular system in wheel hub slows down, and can control with the electric bicycle on market
Device is mated, and compares commercially available electric motor car with two wheels, and it is higher to the adaptability of road, and mileages of continuation is longer.
Technical scheme: for solving above-mentioned technical problem, a kind of disc type unit stacking iron-core-free direct current generator of the present invention, bag
Include axis, described main shaft is cased with successively clutch shaft bearing, the first stator disc, at least one the 3rd stator disc, the second stator disc and
Second bearing, described clutch shaft bearing is cased with the first rotor disk, and described second bearing is cased with the second rotor disk, the first rotor disk
It is clamped with least two third trochanter disks with the second rotor disk, be connected by lasso between adjacent third trochanter disk, lasso is also
It is connected with the first rotor disk and the second rotor disk, be equipped with the first groove in the inner side of the first rotor disk and the second rotor disk, the
First permanent magnet is installed in one groove, the sun gear gear ring for transmitting torque is installed outside the first rotor disk,
Second groove is equipped with the two sides of triple-spool disk, is mounted on the second permanent magnet in the second groove, stator disc is all embedded in
There is coil, coil is fixed on stator disc by stopping means, by the first stator disc, coil, the first rotor disk, third trochanter
Disk, the first permanent magnet and the second permanent magnet form the first power unit, by the second stator disc, coil, the second rotor disk, the 3rd turn
Sub-disk, the first permanent magnet and the second permanent magnet form the second power unit, by the 3rd stator disc, coil, two third trochanter disks,
Second permanent magnet forms at least one the 3rd power unit, the first power unit, the second power unit, the line of the 3rd power unit
Circle is all connected with core of a cable.
Preferably, the pyriform of annular spread is equipped with described first stator disc, the second stator disc and the 3rd stator disc
Hole, is embedded with coil in pyriform in the hole.
Preferably, described coil is the air core coil of circle copper enamel-covered wire coiling, its internal via shape is triangle, after coiling
Outer ring be shaped as pyriform and match with pyriform hole；The interior angle that the triangular inner hole of described coil is located inside stator disc is less than
60 °, the radical length of triangular inner hole is 1/3rd of long diameter less than the radial diameter of coil.The coil of pyriform is left and right
Symmetrical structure, the symmetry axis of each coil points to the center of circle of permanent magnet, and the length of coil symmetry axis is long diameter, triangle
Endoporus is isosceles triangle, and the height on endoporus base is the radical length of triangle, and that is, triangular inner hole is along permanent magnet diameter side
Length upwards.
Preferably, described stopping means comprises inner ring rib, outer ring flange, interior trim ring, outer trim ring, annular circuit board,
The one side of described first stator disc, the second stator disc and the 3rd stator disc is extended with inner ring rib, outer ring flange, in the first stator
The another side of disk, the second stator disc and the 3rd stator disc is provided with outer trim ring, interior trim ring or annular circuit board, is kept off by inner ring
Side, outer ring flange, the axial displacement of interior trim ring, outer trim ring and annular circuit board limiting coil.Preferably, described first stator
Disk or the second stator disc or any one the 3rd stator disc are sequentially with three the in the disc face installing annular circuit board
Three grooves, are provided with Hall element in groove, Hall element is connected with annular circuit board, annular circuit board and core of a cable
Connect.
Preferably, described the first rotor disk and the second rotor disk are made up of ferrous material, its profile is flat bowl-shape, the
The bearing chamber of one rotor disk inside it, by the sun gear gear ring being fixed on outside it as bearing rib；The axle of the second rotor disk
Hold room position to be partial to outside it and be provided with bearing rib；Described third trochanter disk is irony annular disk, and is positioned two stator discs
Centre.
Preferably, described permanent magnet is fan-shaped Nd-Fe-B permanent magnet material, its radical length is the inside and outside of fan-shaped permanent magnet
Semidiameter is the radial diameter of coil is 0.5-0.8 times of long diameter.
Preferably, described first permanent magnet and the second permanent magnet comprise several permanent magnet units, two neighboring permanent magnetism
Gap is left, the size in gap is adapted to classical insulation between body unit.
Beneficial effect: the present invention disc type unit stacking iron-core-free direct current generator, electric property is superior, efficiency high, speed governing
Performance is good, and because disc type iron core-free motor just has efficient feature in low torque section, the present invention adopts multiple units group
Close structure, moment of torsion and the rated power of motor are greatly improved, electric motor car under the situation of riding motor all the time in high efficient area
Operating, thus be greatly improved the mileages of continuation of electric bicycle；Because motor employs iron-free cored structure, no-load current very little
And no magnetic hysteresis resistance, it is installed in wheel hub, can be conducive to improving the installation of planetary gearsets without installing freewheel clutch
Precision；In addition the motor first rotor disk of flat bowl structure and the second rotor disk, makes motor internal be enclosed in two rotor disks,
The motor of the present invention is loaded after wheel hub, planetary gearsets can be lubricated with lubricating oil.
Brief description
Fig. 1 is the overall structure diagram that disc type unit of the present invention is laminated iron-core-free direct current generator.
Fig. 2 is the stator disc schematic diagram that disc type unit of the present invention is laminated iron-core-free direct current generator.
Fig. 3 is coil, Hall element and the annular circuit board peace that disc type unit of the present invention is laminated iron-core-free direct current generator
Dress schematic diagram.
Fig. 4 is disc type unit stacking iron-core-free direct current generator coil of the present invention and permanent magnet schematic diagram.
Fig. 5 is disc type unit stacking iron-core-free direct current generator the first rotor disk schematic diagram of the present invention.
Fig. 6 is disc type unit stacking iron-core-free direct current generator the second rotor disk schematic diagram of the present invention.
Fig. 7 is disc type unit stacking iron-core-free direct current generator third trochanter disk schematic diagram of the present invention.
Fig. 8 is the external magnetic field analysis chart after disc type unit of the present invention is laminated the coil electricity of iron-core-free direct current generator.
Fig. 9 is disc type unit stacking iron-core-free direct current generator adjacent permanent magnet body space adjustment under single-power state of the present invention
The torque efficiency figure of test.
Figure 10 is disc type unit stacking moment of torsion under two power unit laminated arrangement for the iron-core-free direct current generator of the present invention
Efficiency curve diagram.
Specific embodiment
As shown in Figures 1 to 7, a kind of disc type unit stacking iron-core-free direct current generator of the present invention, including axis 1, main shaft 1
On be cased with clutch shaft bearing 9, the first stator disc 2, at least one the 3rd stator disc 3, the second stator disc 4 and second bearing 91 successively,
The first rotor disk 5 is cased with clutch shaft bearing 9, second bearing 91 is cased with the second rotor disk 6, the first rotor disk 5 and the second rotor
Disk 6 is clamped with least two third trochanter disks 7, is connected by lasso 10 between adjacent third trochanter disk 7, and lasso 10 is also with
One rotor disk 5 and the second rotor disk 6 connect, and lasso 10, the first rotor disk 5 and the second rotor disk 6 form a confined space,
The inner side of the first rotor disk 5 and the second rotor disk 6 is equipped with the first groove 27, and the first groove 27 is annular groove, the first groove
First permanent magnet 11 is installed in 27, the sun gear gear ring 13 for transmitting torque is installed outside the first rotor disk 5,
Second groove 26 is equipped with the two sides of triple-spool disk 7, the second groove 26 is annular groove, is mounted on second in the second groove
Permanent magnet 12, the first permanent magnet 11 is identical with the second permanent magnet 12 structure, is fan-shaped permanent magnet, and the first stator disc 2, second is fixed
Six pyriform holes 21 of annular spread are equipped with sub-disk 4 and the 3rd stator disc 3, are embedded with coil 8, coil in pyriform hole 21
8 is the air core coil of circle copper enamel-covered wire coiling, and its internal via shape is triangle, and its outer ring is shaped as the shape mated with pyriform hole 21
Shape, coil 8 is fixed on the first stator disc 2, the second stator disc 4 and the 3rd stator disc 3 by stopping means, by the first stator disc
2nd, coil 8, the first rotor disk 5, third trochanter disk 7, the first permanent magnet 11 and the second permanent magnet 12 form the first power unit, by
Second stator disc 4, coil 8, the second rotor disk 6, third trochanter disk 7, the first permanent magnet 11 and the second permanent magnet 12 composition second
Power unit, by the 3rd stator disc 3, coil, adjacent two third trochanter disks 7, the second permanent magnet 12 form at least one
Three power units, the first power unit, the second power unit, the coil 8 of the 3rd power unit are connected with core of a cable.The present invention
Disc type unit stacking iron-core-free direct current generator is by sun gear gear ring 13 output torque being fixed on the first rotor disk 5.
In the present invention, stopping means comprises inner ring rib 14, outer ring flange 15, interior trim ring 16, outer trim ring 17 and annular
Circuit board 18, the one side of the first stator disc 2, the second stator disc 4 and the 3rd stator disc 3 is extended with inner ring rib 14, outer ring flange
15, in the another side of the first stator disc 2, the second stator disc 4 and the 3rd stator disc 3, outer trim ring 17, interior trim ring 16 or ring are installed
Shape circuit board 18, by inner ring rib 14, outer ring flange 15, interior trim ring 16, outer trim ring 17 and annular circuit board 18 limiting coil 8
Axial displacement.First stator disc 2, the second stator disc 4, the 3rd stator disc 3, inner ring rib 14, outer ring flange 15, interior trim ring 16
It is insulating materials compression molding with outer trim ring 17.First stator disc 2 and the 3rd stator disc 3 being adjacent are by main shaft 1
Convex gear positions, by key pin as backer's positioning, the jump ring 19 that other the 3rd stator discs 3, the second stator disc 4 pass through on axis 1
Fixedly sleeved on main shaft 1.The overall diameter of inner ring rib 14 is less than the interior diameter of the first permanent magnet 11 and the second permanent magnet 12, outward
The interior diameter of circle rib 15 is more than the overall diameter of the first permanent magnet 11 and the second permanent magnet 12；First stator disc 2 or the second stator
Disk 4 or any one the 3rd stator disc 3 are sequentially laid with three the 3rd grooves in the disc face installing annular circuit board 18
20, it is arranged in the center of circle side being located at the first stator disc 2 or the second stator disc 4 or the 3rd stator disc 3 between adjacent pyriform hole 21, the
Hall element 23 is installed in three grooves 20, the pin of Hall element 23 be fixed on the first stator disc 2 or the second stator disc 4
Or the 3rd the annular circuit board 18 on stator disc 3 weld, annular circuit board 18 is connected with core of a cable 22.
In the present invention, the first rotor disk 5 and the second rotor disk 6 are made up of ferrous material, and its profile is flat bowl-shape, the
The bearing chamber 24 of one rotor disk 5 inside it, by the sun gear gear ring 13 being fixed on outside it as bearing rib；Second rotor disk
6 bearing chamber 25 position is partial to outside it and is provided with bearing rib 28.
In the present invention, third trochanter disk 7 is irony annular disk, is installed in two the first rotor disks 5 and the second rotor disk 6
Between, there is lasso 10 to be connected between adjacent third trochanter disk 7, and be positioned and be positioned the centre of two stator discs；3rd
Two anchor rings of rotor disk 7 are equipped with the second groove 26, and the second groove 26 is cannelure, and the mutual adhesive of the second permanent magnet 12 is installed
In the cannelure of two anchor rings of third trochanter disk 7.
As shown in Fig. 4, Fig. 8, the first permanent magnet 11 and the second permanent magnet 12 are fan-shaped Nd-Fe-B permanent magnet material, and it is radially long
Degree be fan-shaped permanent magnet inside and outside semidiameter be the radial diameter of coil 8 be 0.5-0.8 times of long diameter；It is arranged on the first rotor
Adjacent two panels permanent magnet unit on disk 5, the second rotor disk 6 and on third trochanter disk 7 leaves gap each other, gap length by
The classical insulation of motor determines；In the present embodiment, the number of the permanent magnet unit corresponding with the winding of 6 coils 8 composition
Measure as 8, the quantity of the second permanent magnet 12 being pull-in on 7 liang of anchor rings of third trochanter disk is respectively 8.
It is based on the analysis of energising air core coil external magnetic field and tests, the coil 8 of the present invention is most economical effective with permanent magnet
Combination.As Figure 10, by the finite element analysis of single energising air core coil external magnetic field and experimental verification, be energized tubular wire
Circle center, magnetic induction intensity first increases and then is gradually reduced with the increase of coil radius, in hollow adjacent edges
One peak value occurs, hollow area is less, and magnetic field is gathered more obvious；The magnetic induction intensity on energising air core coil surface occurs online
The near axis of circle, more remote apart from hub of a spool, particularly in the outward flange of coil, decay is quickly；Air gap portion coil surface
Magnetic field intensity is maximum, and with the offline increase enclosing surface distance, magnetic field intensity decays rapidly, numerical value very little；By empty to energising
The analysis verification of wire-core coil magnetic induction intensity rule, has shown that the Technology Ways of disc type double dynamical iron-core-free direct current generator are: suitable
When reducing the radical length (the inside and outside semidiameter of sector electromagnet) of fan-shaped permanent magnet, reduce the face of coil 8 hollow parts as far as possible
Long-pending.
Reduce the radical length of fan-shaped permanent magnet, part flux loss can be produced, following table is that the radical length of permanent magnet becomes
Change stacking iron-core-free direct current generator cost double dynamical on disc type, Experimental comparison's data (air core coil radial diameter of efficiency impact
For d=32mm, the high 10.0mm of coil, copper enamel-covered wire line footpath 0.6mm, electrical current 3.5a, hollow radical length 9.6mm, sector
Permanent magnet inside and outside diameter mean value 68mm).Can be seen that subtracting of the radical length with permanent magnet from the correction data of table 1
Little, coil 8 flux loss increases therewith and is in the trend accelerating to increase, and motor maximal efficiency also accordingly reduces, and efficiency reduces
Degree is less than flux loss degree, and the range of decrease of permanent magnet material cost and motor cost becomes apparent from (with the 3rd stator disc 3
Measuring and calculating).By Value Engineering, appropriateness reduces the radical length of fan-shaped permanent magnet, and the efficiency of motor and moment of torsion can decrease,
But can more reduce the consumption of rare earth permanent magnet, more preferably, competitiveness is higher for the economy of motor.
Table 1
Permanent magnet radical length (inside and outside semidiameter of fan-shaped permanent magnet) is less than the technical scheme of the radial diameter of coil 8,
Stopping means is set and provides necessary space for fixed coil 8, both proportionate relationships, determine limiting coil 8 axially
The effect of displacement, such as takes permanent magnet radical length to be 0.9d, and stopping means is less than 0.05d with the width that laminates of coil 8, fixing effect
Really poor；And taking permanent magnet radical length to be less than 0.5d, then flux loss is larger, and Motor torque and efficiency also can correspondingly drop
Low；Experiment shows, correctly handles the proportionate relationship of the radical length of permanent magnet and the radial diameter of coil 8 well, can make motor
Advance, reliability, economy are preferably balanced.
Embodiment one
There is the iron-core-free direct current generator of the first power unit, the winding on each stator disc is made up of 6 coils 8, line
The radial diameter of circle 8 is d=32mm, high 10.0mm, copper enamel-covered wire line footpath 0.67mm, triangle hollow radical length 9.6mm, often
The inside and outside diameter mean value 68mm of 8 permanent magnet units on individual rotor disk, axial height 6mm, radical length 20mm, wheel hub
Slowed down using the planetary gear speed reducing mechanism for 1:8.74 for the speed reducing ratio, the central angle of fan-shaped permanent magnet takes 45 °, 41 °, 38 ° to carry out respectively
Contrast test；Fig. 9 is moment of torsion and efficiency curve diagram, the curve map that a is moment of torsion and efficiency when 45 ° for permanent magnet central angle, and b is forever
Magnet central angle is the curve map of moment of torsion and efficiency when 41 °, the curve map that c is moment of torsion and efficiency when 38 ° for permanent magnet central angle,
Torque efficiency curve map shown in from Fig. 9, the peak efficiency of three kinds of motors is respectively 83.8%, 83.1%, 80.6%, phase
After reserving gap between adjacent two permanent magnet units, electric efficiency is affected inconspicuous, less in the impact of high torque section, this
Result is also matched with the analysis of energising air core coil external magnetic field and experimental result；Gap between permanent magnet changes to motor
Speed impact is larger, and the no-load speed of three kinds of motors is respectively 281 revs/min, 330 revs/min, 361 revs/min, thus may be used
Targetedly to adjust the gap between adjacent permanent magnet, the electric property improving motor is to adapt to wheel hub motor reducing gear
Speed reducing ratio and the change of rim of electric bicycle size.
With respect to cored motor, the inductance value of the coil windings of disc type iron core-free motor is less, and less inductance value makes
The electric property of motor shows as high rpm low torque, and the length of the number of turn and wire that increase coil windings can improve its inductance
Amount, the two kinds of Technology Ways of line footpath that the diameter increasing coil 8 can be taken or reduce wire；The line footpath reducing wire can make winding electricity
Resistance rises and reduces power of motor, and the length of the number of turn and wire increasing coil windings can increase cost and the body of motor
Long-pending, therefore it is required that increasing the number of turn of wire and the length setting line footpath in the limited space of stator disc 2 as much as possible, preferably
Method for winding is: winding clamp, with the triangle rod after chamfered as plug, is laminated coiling wire, by the coil of this coiling
8, its internal via shape is triangle, and outer loop-shaped is subject to the shape size of triangle plug, the line footpath of wire, the yield strength of wire
And the combined influence such as winding tension resembles a pear in shape.
Based on the analysis of air core coil external magnetic field and experimental result, the area of coil hollow parts should be reduced as far as possible, and
Hollow area is less, and the outer loop-shaped of coil is closer to circle, can not make full use of the space of stator disc.The endoporus of coil 8
Should be determined according to the number of coils of the line footpath of wire, the yield strength of wire, the size of stator disc diameter, winding with outer loop-shaped
Fixed, through coiling repeatedly and test, the interior angle that the triangular inner hole of coil 8 is located inside stator disc is less than 60 °, triangular inner hole
The radial diameter that radical length is less than coil is the design of 1/3rd of long diameter, can preferably meet the sky of stator disc
Between using and the requirement gathered to coil 8 center of magnetic field.
Embodiment two
Disc type is laminated iron-core-free direct current generator, and the winding on each stator disc is made up of 6 coils 8, and the radial direction of coil 8 is straight
Footpath is d=32mm, high 10.0mm, copper enamel-covered wire line footpath 0.60mm, and triangle hollow radical length 9.6mm, on each rotor disk
8 permanent magnet units inside and outside diameter mean value 68mm, axial height 6mm, radical length 20mm, the circle of fan-shaped permanent magnet
41 ° respectively of heart angle, wheel hub adopts the planetary gear speed reducing mechanism that speed reducing ratio is 1:8.74 to slow down, and carries out contrast test；In Figure 10, d is the
The curve map of moment of torsion and efficiency when one power unit works independently, e is the first power unit and the second power unit works simultaneously
When moment of torsion and efficiency curve map, Figure 10 shows that disc type stacking iron-core-free direct current generator of the present invention first moves in the present embodiment
Torque efficiency curve map when power cell operation and the first second unit work simultaneously, from torque efficiency curve, one is moved
During power unit drive hub, just can reach high efficiency when moment of torsion is less, first, second power unit task driven wheel hub simultaneously
When, in very wide in range moment of torsion interval, efficiency is maintained at more than 80%.In addition it is also found that two power units from Figure 10
Work, even if in the low torque stage, motor also can keep high efficiency simultaneously, therefore adopt the disc type stacking iron-free of multiple-unit stacking
Core direct current generator, has higher rated power, bigger torque output and wider range of high efficiency range.Disc type stacking of the present invention
Iron-core-free direct current generator, its prominent advantage has: 1) the first stator disc 2 and the second stator disc 4 and the 3rd stator disc 3, inner ring gear
Side 14, outer ring flange 15 can be passed through to be molded one-shot forming by the polymer engineering plastics of high intensity, high-fire resistance, good insulating,
Enable low-cost high-efficiency to produce；2) air core coil 8 that internal via shape is triangle, coil 8 coiling back out circle shape are adopted
For pyriform, coil 8 winding is in the space availability ratio on the first stator disc 2, the second stator disc 4 and the 3rd stator disc 3 than in circle
The air core coil in hole improves 20%, also improves the inductance value of winding simultaneously；3) the interior trim ring 16 of fixed coil 8, outer trim ring
17, equally compression molding, interior trim ring 16, external pressure can be passed through by the insulating material of polymer of high intensity, high-fire resistance, good insulating
Inner ring rib 14 on circle 17, annular circuit board 18 and the first stator disc 2, the second stator disc 4 and the 3rd stator disc 3, outer ring gear
Side 15, limits the axial displacement of coil 8；4) the fan-shaped permanent magnet of Nd-Fe-B permanent magnet material, its radical length is fan-shaped permanent magnetism
The inside and outside semidiameter of body is the radial diameter of coil 8 is 0.5-0.8 times of long diameter, and also leaves between adjacent two panels permanent magnet
Gap, not only decreases the consumption of permanent-magnet material, also improves the high speed performance of motor, according to test and actual checking of riding,
The electric property of motor does not reduce because of the minimizing of permanent magnet material；5) the first rotor disk 5 and the second rotor disk 6 with clamp
Several third trochanter disks 7 between, lasso 10 are closely interlocked in the presence of magnetic field of permanent magnet, install
After need not take other security measure again, therefore can in limited wheel hub space by disc type of the present invention be laminated iron-core-free direct current
The radial dimension of motor does more.
Disc type of the present invention is laminated iron-core-free direct current generator, using multiple-unit power overlaying structure, motor is greatly improved
Moment of torsion and rated power, motor operates in high efficient area all the time, thus the mileages of continuation of electric bicycle is greatly improved；Using
Disc type of the present invention is laminated the wheel hub motor that iron-core-free direct current generator is motor, and its electric property is superior, except conventional motors
Structure is simple, reliable, small volume, lightweight, efficiency high, good speed adjustment features the advantages of outside, due also to employing iron-core-free
Structure, motor weight saving, overload capacity is strong, and no-load current is little；In addition 5, second turn of the first rotor disk of flat bowl structure
Sub-disk 6 is combined with lasso 10 so that motor internal is enclosed in the first rotor disk 5 and the second rotor disk 6, by the motor of the present invention
After loading wheel hub, planet circular system can also be lubricated using lubricating oil.
The double dynamical iron-core-free direct current generator of disc type of the present invention, for electric motor car with two wheels, no-load current very little, advantage is very bright
Aobvious, ride under the situation that condition, identical power consumption, pure electric power travels in identical, its mileages of continuation ratio is in the market
The mileages of continuation of the commonly used electric motor car of wheel hub motor with teeth improves more than 35%, than the electricity using low speed wheel hub motor
The mileages of continuation of motor-car improves more than 45%.
The above be only the preferred embodiment of the present invention it should be pointed out that: for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of disc type unit stacking iron-core-free direct current generator it is characterised in that: include main shaft, described main shaft be cased with the successively
One bearing, the first stator disc, at least one the 3rd stator disc, the second stator disc and second bearing, described clutch shaft bearing is cased with
The first rotor disk, described second bearing is cased with the second rotor disk, and the first rotor disk and the second rotor disk are clamped with least two
Third trochanter disk, is connected by lasso between adjacent third trochanter disk, and lasso is also connected with the first rotor disk and the second rotor disk
Connect, be equipped with the first groove in the inner side of the first rotor disk and the second rotor disk, the first permanent magnet is installed in the first groove,
Sun gear gear ring for transmitting torque is installed outside the first rotor disk, the two sides of third trochanter disk is equipped with second recessed
Groove, the second groove is annular groove, is mounted on the second permanent magnet in the second groove, described first stator disc, the second stator disc,
Coil is all embedded with the 3rd stator disc, coil is fixed on stator disc by stopping means, by the first stator disc, coil,
One rotor disk, third trochanter disk, the first permanent magnet and the second permanent magnet form the first power unit, by the second stator disc, coil,
Second rotor disk, third trochanter disk, the first permanent magnet and the second permanent magnet form the second power unit, by the 3rd stator disc, line
Circle, two third trochanter disks, the second permanent magnets form at least one the 3rd power unit, the first power unit, the second power list
Unit, the coil of the 3rd power unit are connected with core of a cable.
2. disc type unit according to claim 1 stacking iron-core-free direct current generator it is characterised in that: described first stator
The pyriform hole of annular spread is equipped with disk, the second stator disc and the 3rd stator disc, is embedded with coil in pyriform in the hole.
3. disc type unit according to claim 1 and 2 stacking iron-core-free direct current generator it is characterised in that: described coil is
Circle copper enamel-covered wire coiling air core coil, its internal via shape be triangle, the outer ring after coiling be shaped as pyriform and with pyriform hole
Match；The interior angle that the triangular inner hole of described coil is located inside stator disc is less than 60 °, and the radical length of triangular inner hole is little
It is 1/3rd of long diameter in the radial diameter of coil.
4. disc type unit according to claim 1 and 2 stacking iron-core-free direct current generator it is characterised in that: described spacing dress
Put and comprise inner ring rib, outer ring flange, interior trim ring, outer trim ring and annular circuit board, described first stator disc, the second stator disc and
The one side of the 3rd stator disc is extended with inner ring rib, outer ring flange, in the first stator disc, the second stator disc and the 3rd stator disc
Another side is provided with outer trim ring, interior trim ring or annular circuit board, by inner ring rib, outer ring flange, interior trim ring, outer trim ring and ring
The axial displacement of shape circuit board limiting coil.
5. disc type unit according to claim 4 stacking iron-core-free direct current generator it is characterised in that: described first stator disc
Or second stator disc or any one the 3rd stator disc be sequentially with three the 3rd grooves in the one side installing annular circuit board,
Hall element is installed in the 3rd groove, Hall element is connected with annular circuit board, annular circuit board is with core of a cable even
Connect.
6. disc type unit according to claim 1 stacking iron-core-free direct current generator it is characterised in that: described the first rotor disk
Be made up of ferrous material with the second rotor disk, its profile is flat bowl-shape, the bearing chamber of the first rotor disk inside it, by fixing
Sun gear gear ring outside it is as bearing rib；The bearing chamber position of the second rotor disk is partial to outside it and is provided with bearing rib；
Described third trochanter disk is irony annular disk, and is positioned the centre of two stator discs.
7. disc type unit according to claim 1 stacking iron-core-free direct current generator it is characterised in that: described permanent magnet is fan
Shape Nd-Fe-B permanent magnet material, its radical length i.e. inside and outside semidiameter of fan-shaped permanent magnet is the radial diameter of coil is long diameter
0.5 0.8 times.
8. disc type according to claim 1 stacking iron-core-free direct current generator it is characterised in that: described first permanent magnet and the
Two permanent magnets all comprise several permanent magnet units, leave gap, the size in gap and electricity between two adjacent permanent magnets unit
Gas performance parameter is adapted to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610881158.3A CN106341017B (en) | 2016-10-09 | 2016-10-09 | A kind of disc type unit stacking iron-core-free direct current generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610881158.3A CN106341017B (en) | 2016-10-09 | 2016-10-09 | A kind of disc type unit stacking iron-core-free direct current generator |
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| CN106341017A true CN106341017A (en) | 2017-01-18 |
| CN106341017B CN106341017B (en) | 2019-02-19 |
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| CN201610881158.3A Expired - Fee Related CN106341017B (en) | 2016-10-09 | 2016-10-09 | A kind of disc type unit stacking iron-core-free direct current generator |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655586A (en) * | 2017-01-19 | 2017-05-10 | 蒙熙 | Disk-type power generator with stacked stator disks |
| CN106877535A (en) * | 2017-04-13 | 2017-06-20 | 深圳市世尊科技有限公司 | Stacked DC brushless motor |
| CN107181381A (en) * | 2017-06-13 | 2017-09-19 | 成伟坚 | Disc type iron core-free generator |
| CN109347283A (en) * | 2018-12-19 | 2019-02-15 | 仪坤动力科技（上海）有限公司 | Three stator and double-rotor disc type electric machines |
| CN110892619A (en) * | 2017-03-24 | 2020-03-17 | 大卫·摩尔斯 | Axial flux electric machine with built-in optical encoder |
| CN111052552A (en) * | 2017-10-24 | 2020-04-21 | 宝马股份公司 | Cooling device for a stator of a motor vehicle motor, stator and motor vehicle |
| WO2022141363A1 (en) * | 2020-12-31 | 2022-07-07 | 余仁伟 | Disc-type motor stator and winding method therefor |
| CN115967238A (en) * | 2023-03-17 | 2023-04-14 | 三谷科技(东莞)有限公司 | Brushless DC motor with starting protection function |
| CN117375276A (en) * | 2023-12-07 | 2024-01-09 | 奥铄动力科技(天津)有限公司 | Disc motor with outer rotor structure |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655586A (en) * | 2017-01-19 | 2017-05-10 | 蒙熙 | Disk-type power generator with stacked stator disks |
| CN106655586B (en) * | 2017-01-19 | 2023-06-30 | 蒙熙 | Disk generator with superimposed stator disks |
| CN110892619A (en) * | 2017-03-24 | 2020-03-17 | 大卫·摩尔斯 | Axial flux electric machine with built-in optical encoder |
| CN106877535A (en) * | 2017-04-13 | 2017-06-20 | 深圳市世尊科技有限公司 | Stacked DC brushless motor |
| CN107181381A (en) * | 2017-06-13 | 2017-09-19 | 成伟坚 | Disc type iron core-free generator |
| CN107181381B (en) * | 2017-06-13 | 2019-11-12 | 成伟坚 | Disc type iron core-free generator |
| CN111052552A (en) * | 2017-10-24 | 2020-04-21 | 宝马股份公司 | Cooling device for a stator of a motor vehicle motor, stator and motor vehicle |
| CN109347283A (en) * | 2018-12-19 | 2019-02-15 | 仪坤动力科技（上海）有限公司 | Three stator and double-rotor disc type electric machines |
| WO2022141363A1 (en) * | 2020-12-31 | 2022-07-07 | 余仁伟 | Disc-type motor stator and winding method therefor |
| CN115967238A (en) * | 2023-03-17 | 2023-04-14 | 三谷科技(东莞)有限公司 | Brushless DC motor with starting protection function |
| CN117375276A (en) * | 2023-12-07 | 2024-01-09 | 奥铄动力科技(天津)有限公司 | Disc motor with outer rotor structure |
| CN117375276B (en) * | 2023-12-07 | 2024-03-08 | 奥铄动力科技(天津)有限公司 | Disc motor with outer rotor structure |
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| CN106341017B (en) | 2019-02-19 |
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