CN110350749A - A kind of axial magnetic field hub motor - Google Patents

A kind of axial magnetic field hub motor Download PDF

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Publication number
CN110350749A
CN110350749A CN201910757289.4A CN201910757289A CN110350749A CN 110350749 A CN110350749 A CN 110350749A CN 201910757289 A CN201910757289 A CN 201910757289A CN 110350749 A CN110350749 A CN 110350749A
Authority
CN
China
Prior art keywords
magnetic field
stator core
axial magnetic
support plate
motor
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
CN201910757289.4A
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Chinese (zh)
Inventor
眭华兴
眭重兴
高波
高峰
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.)
Individual
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Individual
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 Individual filed Critical Individual
Priority to CN201910757289.4A priority Critical patent/CN110350749A/en
Publication of CN110350749A publication Critical patent/CN110350749A/en
Priority to CN202010105355.2A priority patent/CN111224527B/en
Priority to PCT/CN2020/098421 priority patent/WO2021031696A1/en
Priority to CN202021335580.7U priority patent/CN212627617U/en
Priority to CN202010655843.0A priority patent/CN111756206A/en
Priority to CN202010655839.4A priority patent/CN111756205A/en
Priority to CN202021335039.6U priority patent/CN212627615U/en
Priority to CN202010656183.8A priority patent/CN111756207A/en
Priority to CN202021335030.5U priority patent/CN212627614U/en
Priority to CN202021335043.2U priority patent/CN212627616U/en
Priority to CN202010656151.8A priority patent/CN111835172A/en
Priority to CN202021673679.8U priority patent/CN212627619U/en
Priority to CN202010808187.3A priority patent/CN111769709A/en
Priority to PCT/CN2020/108896 priority patent/WO2021031973A1/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F16H2001/327—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear with orbital gear sets comprising an internally toothed ring gear

Abstract

The invention discloses a kind of axial magnetic field hub motors, including main shaft, wheel hub and end cap, in the inner space of wheel hub and end cap, there are motor and planetary gear speed reducing mechanism, motor is the motor in axial magnetic field of single gap structure, and by the inclusion of there is the bearing unit with two column rolling elements of angular contact bearing to cover on main shaft, support plate is fixedly connected with main shaft and is socketed with stator core the rotor disk of motor, it is connected to support plate by the bolt through stator core, to realize the fixation of stator core.Motor cost of the present invention is low, wide between high-efficient, high efficient area, can greatly improve the mileages of continuation of electric bicycle.

Description

A kind of axial magnetic field hub motor
Technical field
The present invention relates to the hub motor technical fields of electric bicycle, more particularly to a kind of axial magnetic field wheel hub electricity Machine.
Background technique
There are two main classes for existing electric bicycle motor, and one kind is mounted in the built-in motor at bicycle middle shaft position, The another kind of hub motor being mounted on wheel with wheel hub one.Wherein, built-in motor is internal rotor high-speed motor, through planet After gear mechanism slows down, power is transmitted to driving bicycle by chain, such electric machine structure is complicated, and the scope of application is small and valence Lattice are expensive, therefore less are used.
Electric bicycle in the market is mainly using hub motor, traditional electric bicycle hub motor with teeth, Usually wheel hub and end cap is sheathed on main shaft, the inner space of wheel hub and end cap equipped with driving motor, planetary gear speed reducing mechanism and One-way clutch, such as Chinese patent CN03127256.8, CN201510104597.9 of axis structure outer rotor motor, for another example The United States Patent (USP) US20050176542A1 of semi-axis structure inner rotor motor, the driving motor of above-mentioned hub motor with teeth is diameter To the direct current permanent magnet motor in magnetic field, this kind of electric efficiency is not high, and high efficiency range is biased to high power section, and vehicle drives in normally travel Dynamic motor is normally operated in inefficient section, and mileage travelled is shorter.
The driving motor of electric bicycle, it is desirable that required when frequently starting/parking, acceleration/deceleration, low speed or climbing high Torque, normal level land require low torque when driving, and slewing range is big, and can keep when driving stable in various different road conditions Performance can usually optimize the characteristic in specified operating point compared to general industry motor, electric bicycle driving motor It is required that higher, common hub motor is unable to satisfy the common demands that people improve electric bicycle mileages of continuation, and axial magnetic Field direct current generator is inherently able to satisfy this requirement." a kind of disc type iron core-free direct current as disclosed in ZL 201620995774.7 Machine ", but the motor in axial magnetic field of the iron-free core structure need to consume more rare-earth permanent magnet, in face of the big of rare-earth permanent magnet price Width goes up, and economy is obviously insufficient, and therefore, the axial magnetic field direct current generator of iron core is then meet this demand optimal Technology Ways.
Since electric bicycle hub motor is using dead axle structure, it need to use and be different from general motor in axial magnetic field Non- shaft export structure form, there is no apply to motor in axial magnetic field in the hub motor of electric bicycle in the prior art Related art scheme.
Summary of the invention
The object of the present invention is to provide a kind of axial magnetic field hub motor, to by high-efficient, wide between high efficient area axis It is applied to electric bicycle field to magnetic field electric motor, meets people to the increased requirement of mileage travelled.
To achieve the above object, the present invention provides following schemes:
The invention discloses a kind of axial magnetic field hub motor, including main shaft, wheel hub and end cap, the wheel hub and end cap rolling It is dynamic to be socketed on the main shaft, the wheel hub with the end cap is detachable is fixedly connected, further include motor and planetary reducer Structure, the motor and the planetary gear speed reducing mechanism are located in the inner space that the wheel hub and the end cap surround, the main shaft It is equipped with string holes, for the lead-out wire of the motor to pass through the string holes and be connected with external power supply, the motor is single air gap The motor in axial magnetic field of structure, including a rotor disk, a stator core, a support plate, multiple permanent magnets and multiple bolts, it is described Stator core has wire casing, stator tooth and stator yoke, and the magnetic pole strength of the stator tooth is vertical with the main shaft, in the stator yoke Equipped with open slot or through-hole；The rotor disk is by the inclusion of the bearing unit with two column rolling elements and institute for having angular contact bearing Main axis connection is stated, the support plate is fixedly connected with the main shaft；One end of the bolt passes through the open slot or logical Support plate described in Kong Bingyu is connected, and the bolt is displaced between the piece to limit the stator core；The planetary gear speed reducing mechanism Including sun gear gear ring and centre wheel, the permanent magnet is fixed on the one side opposite with the stator core of the rotor disk, The sun gear gear ring is fixed on the another side of the rotor disk, and the centre wheel is fixed on the inner surface of the wheel hub.
Preferably, the planetary gear speed reducing mechanism includes planet carrier, the centre wheel, the sun gear gear ring and planetary gear, The planet carrier fixation is set on the main shaft, and the planetary gear is rotatably installed on the planet carrier, the planet carrier tool There is one-way clutch.
Preferably, the stator core is silicon-steel sheet coiled band after continuous punching blade technolgy plus answers pulling force to wind in advance, institute Stator tooth is stated equipped with mounting groove, the mounting groove is to install hall position sensor.
Preferably, the open slot or the through-hole in the stator yoke, inner circle and institute in the stator core It states stator tooth to correspond to, and parallel with a wire casing of the stator tooth two sides, the width of rebate of the open slot is less than slot Bottom width degree.
Preferably, the bearing unit is double-row angular contact bal bearing or deep groove ball bearing and single-row angular contact ball bearing Tandem compound or two single-row angular contact ball bearings tandem compound.
Preferably, the rotor disk and/or the support plate are equipped with ventilation opening.
Preferably, the lateral surface of the support plate is equipped with the lead to the hole site face with the stator core and direction Consistent aperture, the aperture are inserted into for the bolt.
Preferably, the support plate has a positioning side and columned lateral surface, the yoke portion of the stator core with it is described Columned lateral surface socket, the positioning side is to the stator core axially position.
Preferably, the positioning side of the support plate is with the bolt and/or the stator core by being welded and fixed.
Preferably, the support plate is equipped with fixing groove, the fixing groove and the open slot position face and direction one It causes, the fixing groove and the positioning side are located at the ipsilateral of the support plate, and the bolt is to pass through the stator core The through-hole or the open slot and tight against the slot bottom of the fixing groove.
The present invention achieves following technical effect compared with the existing technology:
The motor in axial magnetic field of single gap structure is applied to the hub motor of electric bicycle, permanent magnet dosage by the present invention Than 20% or more conventional motors decline, core material consumption reduces by more than 50%, and motor peak efficiency promotes about 10%, high efficiency Section is in advance and width is significantly increased.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings Obtain other attached drawings.
Fig. 1 is the present embodiment axial magnetic field hub motor structure schematic diagram；
Fig. 2 is a kind of structural schematic diagram of stator core；
Fig. 3 is another structural schematic diagram of stator core；
Fig. 4 is stator core wire casing and open slot position relational graph；
Fig. 5 is a kind of structural schematic diagram of support plate；
Fig. 6 is another structural schematic diagram of support plate；
Fig. 7 is a kind of structural schematic diagram of bearing unit；
Fig. 8 is another structural schematic diagram of bearing unit；
Fig. 9 is the present embodiment axial magnetic field hub motor motor exploded view；
Figure 10 is the present embodiment hall position sensor scheme of installation；
Figure 11 is the present embodiment axial magnetic field hub motor 48V340W model machine " power-efficiency " curve graph；
Description of symbols: 1 main shaft；2 wheel hubs；3 end caps；4 string holes；5 lead-out wires；6 rotor disks；7 stator cores；8 supports Disk；9 wire casings；10 stator tooths；11 stator yokes；12 open slots；13 through-holes；14 rolling elements；15 bolts；16 permanent magnets；17 sun gears Gear ring；18 planet carriers；19 centre wheels；20 planetary gears；21 dead axles；22 hall position sensors；23 mounting grooves；24 double row angular contacts Ball bearing；25 deep groove ball bearings；26 single-row angular contact ball bearings；27 positioning sides；28 ventilation openings；29 inter-air spaces；30 fixing grooves； 31 apertures.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of axial magnetic field hub motor, to by high-efficient, wide between high efficient area axis It is applied to electric bicycle field to magnetic field electric motor, meets people to the increased requirement of mileage travelled.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real Applying mode, the present invention is described in further detail.
As shown in figs. 1-11, the present embodiment provides a kind of axial magnetic field hub motor, including main shaft 1, wheel hub 2 and end cap 3, Wheel hub 2 and the rolling of end cap 3 are socketed on main shaft 1, and wheel hub 2 and end cap 3 are detachable to be fixedly connected and surround an inner space. The axial magnetic field hub motor further includes motor and planetary gear speed reducing mechanism, and motor and planetary gear speed reducing mechanism are located at the inner space In.Main shaft 1 is equipped with string holes 4, and the lead-out wire 5 of motor is to pass through string holes 4 and be connected with external power supply.Motor is single air gap knot The motor in axial magnetic field of structure, including a rotor disk 6, a stator core 7, a support plate 8, multiple permanent magnets 16 and multiple bolts 15.Stator core 7 has wire casing 9, stator tooth 10 and stator yoke 11, and the magnetic pole strength of stator tooth 10 is vertical with main shaft 1, to be formed Axial magnetic field.Rotor disk 6 connects by the inclusion of bearing unit with two column rolling elements 14 and main shaft 1 rotation for having angular contact bearing It connects, the axial magnetic pull that rotor disk 6 is subject to acts on the angular contact bearing of bearing unit, and rotor disk 6 is because of axial magnetic pull The tilting moment that inhomogeneities is subject to is supported by bearing unit.Support plate 8 is fixedly connected with main shaft 1, and stator yoke 11 is equipped with and opens Mouth slot 12 or through-hole 13, one end of bolt 15 pass through open slot 12 or through-hole 13 and are connected with support plate 8, and bolt 15 is to limit It is displaced between the piece of stator core 7, the axial magnetic pull and electromagnetic torque that stator core 7 is subject to, is transmitted by bolt 15 by propping up Support plate 8 is supported, and realizes that bolt 15 is bonded with stator core 7, bolt 15 with support plate 8.Planetary gear speed reducing mechanism packet Sun gear gear ring 17 and centre wheel 19 are included, permanent magnet 16 is fixed on the one side opposite with stator core 7 of rotor disk 6, sun gear Gear ring 17 is fixed on the another side of rotor disk 6, and centre wheel 19 is fixed on the inner surface of wheel hub 2.
The axial magnetic field hub motor of the present embodiment is the axial magnetic field of single gap structure when in use, by lead-out wire 5 After motor power supply, main shaft 1 is not rotated, and the rotation of rotor disk 6 drives sun gear gear ring 17 to rotate, since sun gear gear ring 17 is planet The input terminal of deceleration mechanism, centre wheel 19 are the output end of planetary gear speed reducing mechanism, are rotated by centre wheel 19 with runner hub 2.Stator The axial magnetic pull that iron core 7 is subject to is transferred to main shaft 1 by bolt 15 and support plate 8, the axial magnetic pull that rotor disk 6 is subject to by Bearing unit is transferred to main shaft 1.
Planetary gear speed reducing mechanism be structure commonly used in the art, concrete form those skilled in the art can according to actual needs into Row adjustment.Planetary gear speed reducing mechanism in the present embodiment includes planet carrier 18, centre wheel 19, sun gear gear ring 17 and planetary gear 20, The fixation of planet carrier 18 is set on main shaft 1, and planetary gear 20 is rotatably installed on the dead axle 21 of planet carrier 18, and sun gear gear ring 17 is logical Planetary gear 20 is crossed by power transmission to centre wheel 19, to rotate with runner hub 2.Planet carrier 18 has one-way clutch, makes electricity Dynamic bicycle still has good coasting ability in unpowered input, when no electricity is ridden, not by the shadow of the magnetic hysteresis resistance of motor It rings.
As shown in Figure 10, the stator core 7 of the present embodiment is that silicon-steel sheet coiled band answers pulling force after continuous punching blade technolgy plus in advance It winds, stator tooth 10 is equipped with mounting groove 23, and mounting groove 23 is to install hall position sensor 22.
As in Figure 2-4, the open slot 12 or through-hole 13 in the stator yoke 11 of the present embodiment, in the inner circle of stator core 7 Locate corresponding with stator tooth 10 and parallel with a wire casing 9 of 10 two sides of stator tooth.It is wide that the width of rebate of open slot 12 is less than slot bottom Degree, after 15 insertion opening slot 12 of bolt, will not be detached from open slot 12, thus the axial direction that stator core 7 is subject to from notch Magnetic pull is transferred to support plate 8.Since axial magnetic pull is larger, corresponding maximum static friction force is also larger, make bolt 15 with Open slot 12 or through-hole 13 are fixed to each other, and bolt 15 will not be slided along open slot 12 or through-hole 13.Those skilled in the art can also The relatively fixed of bolt 15 and stator core 7 is realized by other ways such as welding.
Those skilled in the art can according to actual needs select the concrete form of bearing unit, as long as bearing unit With the angular contact ball bearing that can undertake axial magnetic pull.For example, bearing unit can be double-row angular contact bal bearing 24, as shown in Figure 8；Or the tandem compound of deep groove ball bearing 25 and single-row angular contact ball bearing 26, as shown in Figure 7；Or two lists The tandem compound of column angular contact ball bearing 26.
Since the leakproofness of hub motor is preferable, its heat-sinking capability is improved in the environment of opposing seal, it can be effectively The stability of hub motor performance is improved, " loss of excitation " phenomenon that permanent magnet is generated because temperature increases is eliminated.The present embodiment transfer Sub-disk 6 and/or support plate 8 are equipped with ventilation opening 28, since rotor disk 6 and support plate 8 relatively rotate, will drive the inter-air space 29 In air flowed with rotor disk 6, the flow velocity of 6 edge air of rotor disk is greater than the flow velocity of inside air, thus external atmospheric pressure It less than inside air pressure, is formed " pumping effect ", cold air enters the air gap sky between rotor disk 6 and support plate 8 from ventilation opening 28 Between 29, improve wheel hub 2 in air mobility, to improve heat-sinking capability.
As shown in figure 5, the support plate 8 of the present embodiment has for the ease of the axially position of stator core 7 and support plate 8 Side 27 and columned lateral surface are positioned, the yoke portion of stator core 7 and columned lateral surface are socketed, only need to be by stator core 7 Fitting with positioning side 27 can be realized the axially position of stator core 7.
As shown in fig. 6, the connection in order to realize bolt 15 Yu support plate 8, those skilled in the art can also be in support plate 8 Lateral surface on setting and the consistent aperture 31 of 13 position face of through-hole and direction of stator core 7, aperture 31 inserts for bolt 15 Enter.Since axial magnetic pull is larger, corresponding maximum static friction force is also larger, and bolt 15 is made to be fixed to each other with aperture 31, inserts Pin 15 will not be slided along aperture 31.In Fig. 6, in support plate 8 equally have positioning side 27, positioning side 27 to stator core 7 It fits, to realize the axially position of stator core 7.Those skilled in the art can also be not provided with positioning side 27, pass through tooling Etc. other ways realize stator core 7 axially position.Since tool locating is common positioning method, details are not described herein again.
In the present embodiment, one end of bolt 15 passes through open slot 12 or through-hole 13 and is connected with support plate 8, fixed to limit It is displaced between the piece of sub- iron core 7.There are many connection types of bolt 15 and support plate 8, such as the mode of welding, as long as can make to insert Pin 15 and support plate 8 are relatively fixed；The positioning side 27 of support plate 8 can also be made directly to be welded and fixed with stator core 7, this When bolt 15 only play a part of prevent stator core 7 piece between be displaced；It can also be simultaneously by bolt 15 and support plate 8, support plate 8 Positioning side 27 be weldingly connected with stator core 7.
In order to realize the connection of bolt 15 Yu support plate 8, fixation can also be arranged in those skilled in the art in support plate 8 Slot 30, fixing groove 30 is consistent with 12 position face of open slot and direction, and fixing groove 30 and positioning side 27 are located at the same of support plate 8 Side, bolt 15 is to the through-hole 13 or open slot 12 across stator core 7 and tight against the slot bottom of fixing groove 30.Since axial magnetic is drawn Power is larger, and corresponding maximum static friction force is also larger, and bolt 15 is made to be fixed to each other with fixing groove 30, and bolt 15 will not be along fixation Slot 30 slides.
As shown in figure 11, using the hub motor model machine with teeth of the present embodiment above structure, voltage rating 48V, volume are designed Determine power 340W, driving motor no-load speed 2190rpm/min, 2 no-load speed 308rpm/min of wheel hub, axial magnetic field direct current Machine synchronizes direct current motor type formula using 18 slot, 20 pole fractional-slot, and 7 internal-and external diameter of stator core is respectivelyWith Armature winding usesAnd around mode, parallel branch number is 1, and magnetic pole position sensor is Hall element.
Prototyping testing the result is shown in Figure 11, effect of the maximal efficiency up to 89%, in the power bracket of input power 118W~582W Rate 80% or more, is compared with the 48V350W low speed hub motor of mainstream in the market, and motor of the present invention has apparent excellent Gesture.The sample car of 20 cun of 1.75 wide base tire is pressed in the flat road surface of wind-force three or four stage with the 48V14Ah lithium battery source that is used as power Average speed per hour 24Km/h pure electric vehicle is ridden test, and mileages of continuation reaches 100Km, realizes the purpose of the present invention.
Apply that a specific example illustrates the principle and implementation of the invention in this specification, above embodiments Explanation be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, According to the thought of the present invention, there will be changes in the specific implementation manner and application range.In conclusion in this specification Appearance should not be construed as limiting the invention.

Claims (10)

1. a kind of axial magnetic field hub motor, including main shaft, wheel hub and end cap, the wheel hub and end cap rolling are socketed in the master On axis, the wheel hub with the end cap is detachable is fixedly connected, it is characterised in that:
It further include motor and planetary gear speed reducing mechanism, the motor and the planetary gear speed reducing mechanism are located at the wheel hub and the end cap In the inner space surrounded, the main shaft is equipped with string holes, the lead-out wire of the motor to pass through the string holes and with outside Power supply is connected, and the motor is the motor in axial magnetic field of single gap structure, including a rotor disk, a stator core, a support plate, Multiple permanent magnets and multiple bolts, the stator core have wire casing, stator tooth and stator yoke, the magnetic pole strength of the stator tooth with The main shaft is vertical, and the stator yoke is equipped with open slot or through-hole；The rotor disk is by the inclusion of the tool for having angular contact bearing There is the bearing unit of two column rolling elements to connect with the main axis, the support plate is fixedly connected with the main shaft；It is described to insert One end of pin passes through the open slot or through-hole and is connected with the support plate, and the bolt is to limit the stator core It is displaced between piece；The planetary gear speed reducing mechanism includes sun gear gear ring and centre wheel, and the permanent magnet is fixed on the rotor disk The one side opposite with the stator core, the sun gear gear ring are fixed on the another side of the rotor disk, and the centre wheel is solid Due to the inner surface of the wheel hub.
2. axial magnetic field hub motor according to claim 1, which is characterized in that the planetary gear speed reducing mechanism includes planet Frame, the centre wheel, the sun gear gear ring and planetary gear, the planet carrier fixation are set on the main shaft, the planet Wheel is rotatably installed on the planet carrier, and the planet carrier has one-way clutch.
3. axial magnetic field hub motor according to claim 1, which is characterized in that the stator core is silicon-steel sheet coiled band After continuous punching blade technolgy plus pulling force is answered to wind in advance, the stator tooth is equipped with mounting groove, and the mounting groove is to install Hall position sensor.
4. axial magnetic field hub motor according to claim 1, which is characterized in that the open slot in the stator yoke Or the through-hole, it is corresponding with the stator tooth in the inner circle of the stator core, and an institute with the stator tooth two sides State that wire casing is parallel, the width of rebate of the open slot is less than slot bottom width.
5. axial magnetic field hub motor according to claim 1, which is characterized in that the bearing unit is double row angular contact The series connection of the tandem compound or two single-row angular contact ball bearings of ball bearing or deep groove ball bearing and single-row angular contact ball bearing Combination.
6. axial magnetic field hub motor according to claim 1, which is characterized in that the rotor disk and/or the support Disk is equipped with ventilation opening.
7. axial magnetic field hub motor according to claim 1, which is characterized in that the lateral surface of the support plate is equipped with With the consistent aperture of the lead to the hole site face and direction of the stator core, the aperture is inserted into for the bolt.
8. axial magnetic field hub motor according to claim 1, which is characterized in that the support plate has positioning side and circle Columnar lateral surface, the yoke portion of the stator core and the columned lateral surface are socketed, and the positioning side is to described Stator core axially position.
9. axial magnetic field hub motor according to claim 8, which is characterized in that the positioning side of the support plate with it is described Bolt and/or the stator core are by being welded and fixed.
10. axial magnetic field hub motor according to claim 8, which is characterized in that the support plate is equipped with fixing groove, The fixing groove is consistent with the open slot position face and direction, and the fixing groove and the positioning side are located at the support plate Ipsilateral, the through-hole or the open slot and tight against the slot of the fixing groove of the bolt to pass through the stator core Bottom.
CN201910757289.4A 2019-08-16 2019-08-16 A kind of axial magnetic field hub motor Pending CN110350749A (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
CN201910757289.4A CN110350749A (en) 2019-08-16 2019-08-16 A kind of axial magnetic field hub motor
CN202010105355.2A CN111224527B (en) 2019-08-16 2020-02-20 Axial magnetic field hub motor
PCT/CN2020/098421 WO2021031696A1 (en) 2019-08-16 2020-06-28 Geared hub motor for light electric bicycle
CN202010656151.8A CN111835172A (en) 2019-08-16 2020-07-09 Axial magnetic field hub motor with gear protection mechanism
CN202021335039.6U CN212627615U (en) 2019-08-16 2020-07-09 Axial magnetic field hub motor with gear protection mechanism
CN202010655843.0A CN111756206A (en) 2019-08-16 2020-07-09 Axial magnetic field hub motor
CN202010655839.4A CN111756205A (en) 2019-08-16 2020-07-09 Axial magnetic field has geared hub motor
CN202021335580.7U CN212627617U (en) 2019-08-16 2020-07-09 Axial magnetic field hub motor
CN202010656183.8A CN111756207A (en) 2019-08-16 2020-07-09 Electric bicycle hub motor with gear protection mechanism
CN202021335030.5U CN212627614U (en) 2019-08-16 2020-07-09 Axial magnetic field has geared hub motor
CN202021335043.2U CN212627616U (en) 2019-08-16 2020-07-09 Electric bicycle hub motor with gear protection mechanism
CN202021673679.8U CN212627619U (en) 2019-08-16 2020-08-12 Unit module combined stator axial magnetic field geared hub motor
CN202010808187.3A CN111769709A (en) 2019-08-16 2020-08-12 Unit module combined stator axial magnetic field geared hub motor
PCT/CN2020/108896 WO2021031973A1 (en) 2019-08-16 2020-08-13 Axial-flux geared hub motor having unit module-combined stator

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CN202010105355.2A Active CN111224527B (en) 2019-08-16 2020-02-20 Axial magnetic field hub motor
CN202010656183.8A Pending CN111756207A (en) 2019-08-16 2020-07-09 Electric bicycle hub motor with gear protection mechanism
CN202021335039.6U Active CN212627615U (en) 2019-08-16 2020-07-09 Axial magnetic field hub motor with gear protection mechanism
CN202010655843.0A Pending CN111756206A (en) 2019-08-16 2020-07-09 Axial magnetic field hub motor
CN202021335043.2U Active CN212627616U (en) 2019-08-16 2020-07-09 Electric bicycle hub motor with gear protection mechanism
CN202021335580.7U Active CN212627617U (en) 2019-08-16 2020-07-09 Axial magnetic field hub motor
CN202010656151.8A Pending CN111835172A (en) 2019-08-16 2020-07-09 Axial magnetic field hub motor with gear protection mechanism
CN202021335030.5U Active CN212627614U (en) 2019-08-16 2020-07-09 Axial magnetic field has geared hub motor
CN202010655839.4A Pending CN111756205A (en) 2019-08-16 2020-07-09 Axial magnetic field has geared hub motor
CN202021673679.8U Active CN212627619U (en) 2019-08-16 2020-08-12 Unit module combined stator axial magnetic field geared hub motor
CN202010808187.3A Pending CN111769709A (en) 2019-08-16 2020-08-12 Unit module combined stator axial magnetic field geared hub motor

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CN202010656183.8A Pending CN111756207A (en) 2019-08-16 2020-07-09 Electric bicycle hub motor with gear protection mechanism
CN202021335039.6U Active CN212627615U (en) 2019-08-16 2020-07-09 Axial magnetic field hub motor with gear protection mechanism
CN202010655843.0A Pending CN111756206A (en) 2019-08-16 2020-07-09 Axial magnetic field hub motor
CN202021335043.2U Active CN212627616U (en) 2019-08-16 2020-07-09 Electric bicycle hub motor with gear protection mechanism
CN202021335580.7U Active CN212627617U (en) 2019-08-16 2020-07-09 Axial magnetic field hub motor
CN202010656151.8A Pending CN111835172A (en) 2019-08-16 2020-07-09 Axial magnetic field hub motor with gear protection mechanism
CN202021335030.5U Active CN212627614U (en) 2019-08-16 2020-07-09 Axial magnetic field has geared hub motor
CN202010655839.4A Pending CN111756205A (en) 2019-08-16 2020-07-09 Axial magnetic field has geared hub motor
CN202021673679.8U Active CN212627619U (en) 2019-08-16 2020-08-12 Unit module combined stator axial magnetic field geared hub motor
CN202010808187.3A Pending CN111769709A (en) 2019-08-16 2020-08-12 Unit module combined stator axial magnetic field geared hub motor

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WO2021031696A1 (en) * 2019-08-16 2021-02-25 眭华兴 Geared hub motor for light electric bicycle
CN112721611A (en) * 2021-01-29 2021-04-30 江苏大学 Birotor hub motor based on axial magnetic field and control method thereof
GB2599592A (en) * 2021-01-29 2022-04-06 Univ Jiangsu Dual-rotor in-wheel motor based on axial magnetic field and control method thereof
TWI770780B (en) * 2021-01-21 2022-07-11 新加坡商普拉希斯國際有限公司 Inner rotor hub motor

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WO2021031696A1 (en) * 2019-08-16 2021-02-25 眭华兴 Geared hub motor for light electric bicycle
CN111030332A (en) * 2019-09-11 2020-04-17 眭华兴 Axial magnetic field has geared hub motor
TWI770780B (en) * 2021-01-21 2022-07-11 新加坡商普拉希斯國際有限公司 Inner rotor hub motor
CN112721611A (en) * 2021-01-29 2021-04-30 江苏大学 Birotor hub motor based on axial magnetic field and control method thereof
GB2599592A (en) * 2021-01-29 2022-04-06 Univ Jiangsu Dual-rotor in-wheel motor based on axial magnetic field and control method thereof
GB2599592B (en) * 2021-01-29 2023-05-03 Univ Jiangsu Dual-rotor in-wheel motor based on axial magnetic field and control method therefor

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CN111756207A (en) 2020-10-09
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CN111756205A (en) 2020-10-09
CN212627617U (en) 2021-02-26
CN111756206A (en) 2020-10-09
CN111224527B (en) 2021-03-02
CN212627619U (en) 2021-02-26
CN111835172A (en) 2020-10-27
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CN212627615U (en) 2021-02-26
CN111224527A (en) 2020-06-02

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