CN106160325B - A kind of wheel hub motor - Google Patents
A kind of wheel hub motor Download PDFInfo
- Publication number
- CN106160325B CN106160325B CN201610562321.XA CN201610562321A CN106160325B CN 106160325 B CN106160325 B CN 106160325B CN 201610562321 A CN201610562321 A CN 201610562321A CN 106160325 B CN106160325 B CN 106160325B
- Authority
- CN
- China
- Prior art keywords
- coil
- brake disc
- wheel hub
- hub motor
- magnet
- 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.)
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Classifications
-
- 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
- H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
- F16D65/128—Discs; Drums for disc brakes characterised by means for cooling
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/78—Features relating to cooling
- F16D65/84—Features relating to cooling for disc brakes
- F16D65/847—Features relating to cooling for disc brakes with open cooling system, e.g. cooled by air
-
- 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
- H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
- H02K7/1021—Magnetically influenced friction brakes
- H02K7/1023—Magnetically influenced friction brakes using electromagnets
- H02K7/1025—Magnetically influenced friction brakes using electromagnets using axial electromagnets with generally annular air gap
Abstract
Include central shaft, brake disc and coil brace the invention discloses a kind of wheel hub motor.Brake disc is fixed on center shaft, has through-hole, and the magnet for having magnetizing direction parallel with the axis of brake disc in through-hole on the end face of brake disc, has coil corresponding with magnet on coil brace, and after coil charges the brake disc can rotate.Hub motor structure in the application is simple, the offer of driving force and the offer of brake force are provided by the process of charging, the problem of simplifying wheel hub motor complicated in mechanical structure in the prior art, reduces the weight of wheel hub motor, improves the control stability of automobile.
Description
Technical field
The present invention relates to the technical fields of electric vehicle, in particular to a kind of wheel hub motor.
Background technology
Wheel hub motor technology is also referred to as wheel inner electric machine technology, its maximum feature is exactly by power plant, transmission
Device and brake apparatus are all integrated into wheel hub, are able to the mechanical part of electric vehicle is greatly simplified.
Existing hub motor structure is complicated, needs individually designed wheel hub, and mechanical connecting structure is complicated, needs change former
The disc type brake structure of type vehicle.Since existing wheel hub motor integrates the complicated of global facility, weight is very big so that wheel hub
Rotary inertia increase, affect the control stability of vehicle.
Therefore, how a kind of wheel hub motor is provided, the structure of wheel hub motor is simplified, to improve the stability of automobile operation,
It is a technical problem that technical personnel in the field need to solve at present.
Invention content
In view of this, the present invention provides a kind of wheel hub motor, simplify the structure of wheel hub motor, to improve automobile operation
Stability.
To achieve the above object, the present invention provides the following technical solutions：
A kind of wheel hub motor comprising：
Central shaft；
The brake disc being fixedly connected with the central shaft has through-hole on the end face of the brake disc, is set in the through-hole
It is equipped with the magnetizing direction magnet parallel with the axis of the brake disc；
The coil brace that can be relatively rotated on the central shaft and with the central shaft is set in, on the coil brace
It is provided with the coil opposite with the magnet, after the coil charges brake disc can rotate.
Preferably, in above-mentioned wheel hub motor, the coil brace includes be arranged in the brake disc both sides
One coil brace and the second coil brace, the first coil holder and second coil brace are set in the central shaft
On, the first coil holder and second coil brace all have the coil.
Preferably, in above-mentioned wheel hub motor, the first coil holder and second coil brace are circular casing
Body, the toroidal shell all have opening close to the side of the brake disc, and opening in the toroidal shell is arranged in the coil
It is opposite with the magnet at mouthful.
Preferably, in above-mentioned wheel hub motor, the first coil holder and second coil brace are solid by screw
Fixed connection.
Preferably, in above-mentioned wheel hub motor, there is the first ventilation opening, the First Line on the periphery of the brake disc
Coil support connects with second coil brace and is formed on the circumferential surface the second ventilation opening, and adjacent two described second are logical
The central angle in air port is the integral multiple of the central angle of two adjacent first ventilation openings.
Preferably, in above-mentioned wheel hub motor, the toroidal shell all has the recessing groove of brake callipers installation.
Preferably, in above-mentioned wheel hub motor, the toroidal shell is 5/6ths annulus, and the toroidal shell is formed
Notch be the recessing groove.
Preferably, in above-mentioned wheel hub motor, the through-hole is multiple, and the magnet is corresponded with the through-hole.
Preferably, in above-mentioned wheel hub motor, all through-hole being arranged circumferentially along the brake disc.
Preferably, in above-mentioned wheel hub motor, the through-hole is circular through hole, and the magnet is to coordinate with the through-hole
Cylindrical permanent magnet.
It can be seen via above technical scheme that including central shaft, brake disc and line the invention discloses a kind of wheel hub motor
Coil support, brake disc are fixed on center shaft, have through-hole on the end face of brake disc, and have magnetizing direction and brake in through-hole
The axis of disk parallel magnet has coil corresponding with magnet on coil brace, and can make the brake after coil charges
Hull rotates.Hub motor structure in the application is simple, by the process of charging can be realized power offer, transmission and
The realization of braking simplifies the problem of wheel hub motor mechanical mechanism complexity in the prior art, reduces the weight of wheel hub motor, carry
The high control stability of automobile.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is automobile part-structure explosive view provided in an embodiment of the present invention；
Fig. 2 is the vertical view after first coil holder and the second coil brace connection provided in an embodiment of the present invention；
Fig. 3 is the left view after first coil holder and the second coil brace connection provided in an embodiment of the present invention；
Fig. 4 is the front view of brake disc provided in an embodiment of the present invention；
Fig. 5 is the side view of brake disc provided in an embodiment of the present invention；
Fig. 6 is the front view of the second coil brace provided in an embodiment of the present invention；
Fig. 7 is the side view of the second coil brace provided in an embodiment of the present invention；
Fig. 8 is the front view of first coil holder provided in an embodiment of the present invention；
Fig. 9 is the side view of first coil holder provided in an embodiment of the present invention；
Figure 10 is the structural schematic diagram after the second coil brace connection provided in an embodiment of the present invention.
Specific implementation mode
Core of the invention is to provide a kind of wheel hub motor, simplifies the structure of wheel hub motor, steady with the manipulation for improving automobile
It is qualitative.
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 describes, 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.
As shown in Fig. 1-Figure 10, the invention discloses a kind of wheel hub motors, including central shaft 5, brake disc 2 and coil branch
Frame, brake disc 2 are fixed on central shaft 5, have through-hole on the end face of brake disc 2, and have magnetizing direction and brake in through-hole
The parallel magnet 21 of the axis of disk 2, has coil 10 corresponding with magnet 21 on coil brace, and coil 10 charge after can
The brake disc 2 is set to rotate.The application increases the magnet 21 being axially arranged on brake disc 2, and is accordingly provided with coil 10,
It can be realized by the effect in magnetic field and provide axially driving torque, braking moment etc. to brake disc.Wheel hub motor knot in the application
Structure is simple, and the realization of offer and the braking of power can be realized by the process of charging, simplifies wheel hub electricity in the prior art
The problem of machine complicated in mechanical structure, reduces the weight of wheel hub motor, to improve the control stability of automobile.
Coil 10 provides three-phase or five phase alternating currents, generates rotating excitation field, in the axial magnetic field and brake disc 2 in coil 10
21 magnetic field interaction of magnet generate torque, provide power for running car.During braking automobile, no power in coil 10
Stream, continues to rotate, cutting magnetic induction line generates reverse current in coil 10, plays electromagnetism due to the magnet 21 on brake disc 2
The effect of damping, the electric current generated in coil 10, to power source charges, play the mesh of Brake energy recovery by electric machine controller 01
's.When middle intensity braking, applies the magnetic field that reverse current generates reverse rotation in coil 10, brake disc 2 is made to brake, it is urgent to make
Increase brake callipers 8 when dynamic and squeeze the realization mechanical friction braking of brake block 2, friction catch is combined with electromagnetic damping braking, carries
High 2 braking ability of brake disc.In reversing process, motor reversal is realized in control rotating excitation field reversion.
Coil brace in the application includes the first coil holder 1 and the second coil for being arranged in 2 both sides of brake disc
Holder 3, and first coil holder 1 and the second coil brace 3 are set on central shaft 5, first coil holder 1 and the second line
Coil support 3 all has above-mentioned coil 10.The effect of magnetic field force can be improved using two coil braces, to improve to automobile
Power support.Can be 1000-1500 circles, line footpath for the number of turns of coil 10 disclosed herein：0.2-0.8mm.Herein only
There is provided a kind of ranges of coil 10 size and the number of turns, according to different can select in practice.In addition, in reality
One coil brace or setting multiple coil braces also can be only set in border, as long as disclosure satisfy that the mode of demand is being protected
It protects in range.
In wheel hub motor disclosed herein, first coil holder 1 and the second coil brace 3 are toroidal shell, and
Toroidal shell all has opening close to the side of brake disc 2, and it is opposite with magnet 21 that the opening in toroidal shell is arranged in coil 10.
A kind of structure of coil brace disclosed herein is specifically circular ring shape shell, and is U-shaped structure in radial section,
I.e. the shell has bottom surface, top surface and a side for connecting top and bottom, wherein and top and bottom are disc, wherein
It is hatch frame close to the side of brake disc 2, without face, coil 10 is mounted between top and bottom, and right with magnet 21
It should arrange.In addition, can also set coil brace to simple supporting structure, it is only necessary to can realize installation to coil i.e.
It can.First coil holder 1 and the second coil brace 3 disclosed herein is set on central shaft 5, is rotated in central shaft 5
In the process, first coil holder 1 and the second coil brace 3 are not with central axis.
Together with first coil holder 1 is bolted with the second coil brace 3 in the application, to improve first coil
The stability of holder 1 and the second coil brace 3 specifically has threaded mounting hole 11, the second coil on first coil holder 1
There is mounting hole 31 on holder 3.For the installation gap between central shaft 5 and first coil holder 1 and the second coil brace 3
According to different can set, and in protection domain, as long as can ensure the stable rotation of central shaft.This
Outside, when mounted, brake disc 2 is located at first coil holder 1 and the second coil branch for first coil holder 1 and the second coil brace 3
Between frame 3, and brake disc 2 is fixedly connected with central shaft 5, i.e., is rotated with central shaft 5, and specifically, central shaft 5 is logical with brake disc 2
Fixing bolt connection is crossed, therefore, the influence in order to avoid coil brace to brake disc 2 is needed brake disc 2 and first coil branch
It is disposed as the gap with 1.0-2.0mm between frame 1 and the second coil brace 3.
In further embodiment, there is the first ventilation opening, first coil holder and second on the periphery of brake disc 2
Coil brace connects and forms the second ventilation opening on the circumferential surface, specifically, on first coil holder 1 has the second ventilation opening left
Half 12, the second coil brace 3 has the second ventilation opening right half 32, the second ventilation opening left half 12 and right half 32 composition of the second ventilation opening
Second ventilation opening.Specifically, the central angle of two adjacent the second ventilation openings is the central angle of two adjacent the first ventilation openings
Integral multiple.Specifically, the number of the second ventilation opening is six, and the number of threaded mounting hole 11 is four, and alternate arrangement.Circle
Cylindricality permanent magnet and brake disc 2 are contour, and cylindrical magnet iron diameter is less than the first ventilation opening maximum gauge, ensure that brake disc 2 dissipates
The uniform heat dissipation effect of heat.
Further include brake callipers 8 to improve the braking effect of brake disc 2 in further embodiment, the specific brake
The structures of vehicle clamp 8 and mounting means with it is in the prior art identical, still, be respectively provided in the both sides of brake disc 2 in the application
Coil brace, in order to provide installation space to brake callipers 8, toroidal shell disclosed herein also has brake callipers 8
The recessing groove of installation, to ensure normal mounting and the use of brake callipers 8.In view of foregoing description it is found that original structure can
Axial through-hole is only opened up on brake disc 2, magnet 21 is set in through-hole, and accordingly increases first coil holder 1 and the
Two wires coil support 3, therefore, the shape of first coil holder 1 and the second coil brace 3 need according to the space of existing structure into
Row setting.Change to existing vehicle structure is reduced using above-mentioned setting.
Specifically in embodiment, above-mentioned first coil holder 1 and the second coil brace 3 are 5/6ths circular ring shell
Body structure, and the notch that the toroidal shell is formed is recessing groove.For both first coil holder 1 and the second coil brace 3
Size for according to different can set, and in protection domain.
The through-hole being arranged on brake disc 2 disclosed herein is multiple, (preferred 15 or 21) and along brake
Disk 2 is arranged circumferentially, and the magnet 21 in the application is corresponded with through-hole, i.e., all has a magnet in each through-hole
21.Further, since first coil holder 1 and the second coil brace 3 are to have loop configuration jaggy, but the coil 10 being arranged
It is the distance between adjacent be also it is identical, i.e., these coils 10 are also to be evenly arranged on corresponding coil brace.When coil 10
After charging, under the action of a magnetic force, 21 cutting magnetic induction line of magnet provides power, and brake disc 2 rotates.
Through-hole disclosed in above-described embodiment is circular through hole, and corresponding magnet 21 is cylindrical magnet, and the magnet
21 be permanent magnet.It will be appreciated by persons skilled in the art that in practice restriction magnet 21, through-hole can be needed according to different
Shape and size and number, magnet exciting coil can also be increased to encourage stronger magnetic field.Those skilled in the art are not herein
It is specifically limited, and in protection domain.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (8)
1. a kind of wheel hub motor, which is characterized in that including：
Central shaft (5)；
The brake disc (2) being fixedly connected with the central shaft (5) has through-hole, the through-hole on the end face of the brake disc (2)
Inside it is provided with the magnetizing direction magnet (21) parallel with the axis of the brake disc (2)；
It is set in the coil brace that can be relatively rotated on the central shaft (5) and with the central shaft (5), the coil brace
On be provided with the coil (10) opposite with the magnet (21), the brake disc (2) can be made to turn after coil (10) charging
Dynamic, the magnet (21) is the cylindrical permanent magnet coordinated with the through-hole；
Coil (10) provides three-phase or five phase alternating currents, generates rotating excitation field, the axial magnetic field in coil (10) and brake disc (2)
On magnet (21) magnetic field interaction generate torque, provide power for running car；During braking automobile, in coil (10)
Obstructed electric current continues to rotate, cutting magnetic induction line due to the magnet (21) on brake disc (2), is generated in coil (10) reversed
Electric current, plays the role of electromagnetic damping, and the electric current generated in coil (10), to power source charges, plays braking by electric machine controller
The purpose of energy regenerating；When middle intensity braking, applies the magnetic field that reverse current generates reverse rotation in coil (10), make brake
Disk (2) is braked, and is increased brake callipers (8) when emergency braking and is squeezed brake disc (2) and realizes mechanical friction braking, friction catch and electricity
Magnetic damping braking is combined, and improves brake disc (2) braking ability；In reversing process, motor is realized in control rotating excitation field reversion
Reversion；
The coil brace includes the first coil holder (1) and the second coil branch for being arranged in the brake disc (2) both sides
Frame (3), the first coil holder (1) and second coil brace (3) are set on the central shaft (5), and described
One coil brace (1) and second coil brace (3) all have the coil (10)；
There is the first ventilation opening, the first coil holder (1) and the second coil branch on the periphery of the brake disc (2)
Frame (3) connects and forms the second ventilation opening on the circumferential surface, and the central angle of two adjacent second ventilation openings is adjacent
Two first ventilation openings central angle integral multiple, and to be less than the first ventilation opening maximum for the cylindrical permanent magnet diameter
Diameter.
2. wheel hub motor according to claim 1, which is characterized in that the first coil holder (1) and second line
Coil support (3) is toroidal shell, and the toroidal shell all has opening, the coil close to the side of the brake disc (2)
(10) opening being arranged in the toroidal shell is opposite with the magnet (21).
3. wheel hub motor according to claim 2, which is characterized in that the first coil holder (1)
It is fixedly connected by screw with second coil brace (3).
4. wheel hub motor according to claim 2, which is characterized in that the toroidal shell all has brake callipers (8) peace
The recessing groove of dress.
5. wheel hub motor according to claim 4, which is characterized in that the toroidal shell is 5/6ths annulus, institute
The notch for stating toroidal shell formation is the recessing groove.
6. according to claim 1-5 any one of them wheel hub motors, which is characterized in that the through-hole is multiple, the magnet
(21) it is corresponded with the through-hole.
7. wheel hub motor according to claim 6, which is characterized in that all through-holes are along the brake disc (2)
It is arranged circumferentially.
8. wheel hub motor according to claim 6, which is characterized in that the through-hole is circular through hole.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610562321.XA CN106160325B (en) | 2016-07-15 | 2016-07-15 | A kind of wheel hub motor |
| EP17826862.9A EP3487052A4 (en) | 2016-07-15 | 2017-06-20 | Motor and brake disc thereof, hub motor, and vehicle having a disc hub motor |
| US16/092,285 US11053996B2 (en) | 2016-07-15 | 2017-06-20 | Hub motor |
| PCT/CN2017/089118 WO2018010524A1 (en) | 2016-07-15 | 2017-06-20 | Motor and brake disc thereof, hub motor, and vehicle having a disc hub motor |
| US16/092,287 US10788090B2 (en) | 2016-07-15 | 2018-10-09 | Automobile having disc type hub motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610562321.XA CN106160325B (en) | 2016-07-15 | 2016-07-15 | A kind of wheel hub motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106160325A CN106160325A (en) | 2016-11-23 |
| CN106160325B true CN106160325B (en) | 2018-09-28 |
Family
ID=58059412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610562321.XA Active CN106160325B (en) | 2016-07-15 | 2016-07-15 | A kind of wheel hub motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN106160325B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018010524A1 (en) * | 2016-07-15 | 2018-01-18 | 山东贝格新能源科技有限公司 | Motor and brake disc thereof, hub motor, and vehicle having a disc hub motor |
| US11053996B2 (en) | 2016-07-15 | 2021-07-06 | Qiguang Wang | Hub motor |
| CN107846092B (en) * | 2017-10-23 | 2019-11-26 | 丰县皓威机械科技有限公司 | A kind of wheel hub electric motor of electric vehicle of integrated caliper |
| CN107618356B (en) * | 2017-10-23 | 2020-01-21 | 山东理工大学 | Electric automobile wheel limit motor |
| CN107681814B (en) * | 2017-10-23 | 2019-08-06 | 汉高乐泰(宁夏)新材料有限公司 | Stator six phase reluctance motor in two sides for electric vehicle |
| DE102019130767A1 (en) * | 2019-11-14 | 2021-05-20 | Fazua Gmbh | Driving and braking device for a vehicle and a vehicle |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4730664B2 (en) * | 2006-03-28 | 2011-07-20 | トヨタ車体株式会社 | In-wheel motor |
| CN101249803B (en) * | 2008-03-26 | 2010-09-15 | 王坤程 | Automobile disk type electromagnetic damping brake |
| CN201217433Y (en) * | 2008-04-23 | 2009-04-08 | 力帆实业(集团)股份有限公司 | Brake disc protection plate and slewing journal combination of four-wheel motorcycle |
| CN101628598A (en) * | 2009-08-14 | 2010-01-20 | 玉环县凯球节能机电设备有限公司 | Built-in ultra-low speed band brake type bicycle generator |
| CN102303591A (en) * | 2011-06-07 | 2012-01-04 | 郑霞 | Magnetic-control brake |
| CN205149498U (en) * | 2015-11-03 | 2016-04-13 | 湖南机电职业技术学院 | Wind -powered electricity generation automobile wheel hub motor |
| CN206226198U (en) * | 2016-07-15 | 2017-06-06 | 山东贝格新能源科技有限公司 | A kind of wheel hub motor |
-
2016
- 2016-07-15 CN CN201610562321.XA patent/CN106160325B/en active Active
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| CN106160325A (en) | 2016-11-23 |
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Effective date of registration: 20180710 Address after: 518000 B block 601, Xinhua Building, Xili street, Nanshan District, Shenzhen, Guangdong. Applicant after: Shenzhen beg Power Technology Co., Ltd. Address before: 264003 Mingda West Road, Laishan District, Yantai, Shandong Province, No. 11 Applicant before: Shandong Bigdata New Energy Technology Co., Ltd. |
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Effective date of registration: 20180821 Address after: 264005 unit 2, building 1, Triumphal Arch, Huarun center, Laishan District, Yantai, Shandong. Applicant after: Wang Qiguang Address before: 518000 B block 601, Xinhua Building, Xili street, Nanshan District, Shenzhen, Guangdong. Applicant before: Shenzhen beg Power Technology Co., Ltd. |
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Effective date of registration: 20190214 Address after: 518000 B block 601, Xinhua Building, Xili street, Nanshan District, Shenzhen, Guangdong. Patentee after: Shenzhen beg Power Technology Co., Ltd. Address before: 264005 unit 2, building 1, Triumphal Arch, Huarun center, Laishan District, Yantai, Shandong. Patentee before: Wang Qiguang |