CN108649710A - A kind of how small coil coupling device for slewing wireless power transmission - Google Patents
A kind of how small coil coupling device for slewing wireless power transmission Download PDFInfo
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- CN108649710A CN108649710A CN201810602353.7A CN201810602353A CN108649710A CN 108649710 A CN108649710 A CN 108649710A CN 201810602353 A CN201810602353 A CN 201810602353A CN 108649710 A CN108649710 A CN 108649710A
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- coil
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- magnetic core
- magnetic cores
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The present invention provides a kind of how small coil coupling devices for slewing wireless power transmission, including for electromagnet core and power supply coil, include multiple primary side magnetic cores and multiple secondary side magnetic cores for electromagnet core, multiple primary side magnetic cores and multiple secondary side magnetic cores surround matrix type core structure according to circumference array, power supply coil includes primary coil and secondary coil, one small solenoid coil of equal coiling on each primary side magnetic core and each secondary side magnetic core, there are air gap distances between primary coil and secondary coil；The matrix type structure that multiple primary side magnetic cores surround is connect with fixing end, the matrix type core structure that multiple pair sides magnetic core surrounds is connect with round end, it is slewing powering mode to form fixed power supply unit, is reversed, and it is fixed equipment powering mode to form rotation power supply unit.The present invention is safe and reliable, and the wireless transmission of stable electric power can be realized in 360 ° of rotating ranges, and matrix type structure, leakage field is less, and dismounting is easy for installation.
Description
Technical field
The invention belongs to wireless power transmission technical fields, and slewing wireless power transmission is used for more particularly, to one kind
How small coil coupling device.
Background technology
Wireless power transmission technology is avoided due to having broken away from dependence of the traditional wire power transmission to electric conductors such as conducting wires
The problems such as traditional conducting wire is in direct contact power supply mode and brings various problems, such as friction, aging, contact resistance, spark, meets
The actual needs of special electricity consumption occasion is a kind of new type of electric energy transmission, have the characteristics that it is non-contact, safe and reliable, it is suitable
Occasion for the application of some the special environments.
Slewing directly can not use cable mode to carry out electric energy transmission, because cable can twine when its rotary work
Around, and then service cable is destroyed, lead to power failure.Slewing relies primarily on conducting slip ring and carries out electric energy transmission at present, and
Slip ring is powered using brush contact mode, therefore is worked long hours, and contact surface serious wear, contact resistance becomes larger, generation office
Portion's superheating phenomenon is detached from so as to cause poor contact or contact, greatly reduces the reliability of slewing power supply, reduces slip ring
Service life, may seriously lead to major accident, and replace slip ring, larger cost need to be consumed.
Invention content
In view of this, the present invention is directed to propose a kind of how small coil for slewing wireless power transmission couples dress
It sets, securely and reliably, the wireless transmission of stable electric power can be realized in 360 ° of rotating ranges, matrix type structure, leakage field is less, tears open
It unloads easy for installation.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of how small coil coupling device for slewing wireless power transmission, including for electromagnet core and supply lines
Circle, described for electromagnet core is square bar magnetic core, and described for electromagnet core includes multiple primary side magnetic cores and multiple secondary sides magnetic cores,
Multiple primary side magnetic cores and multiple secondary side magnetic cores are the matrix type core structure surrounded according to circumference array, bone
The primary side magnetic core often located of frame type core structure and secondary side magnetic core position are opposite, the power supply coil include primary coil and
Secondary coil, the primary coil and secondary coil are concatenated by multiple small solenoid coils, each primary side
On magnetic core and each one small solenoid coil of coiling on the secondary side magnetic core is wound on opposite primary side magnetic core and secondary side
The position of small solenoid coil on magnetic core is corresponding, and there are air gap distances between the primary coil and secondary coil；
The matrix type core structure that multiple primary side magnetic cores surround is connect with fixing end, and multiple secondary side magnetic cores surround
Matrix type core structure connect with round end, it is slewing powering mode to form fixed power supply unit；
The matrix type core structure that multiple primary side magnetic cores surround is connect with round end, and multiple secondary side magnetic cores surround
Matrix type core structure connect with fixing end, formed rotation power supply unit be fixed equipment powering mode.
Further, multiple primary side magnetic cores and multiple secondary side magnetic cores and corresponding coil pass through a magnetic core framework
Positioning.
Further, the magnetic core framework is hollow cylindrical, and in the outer surface of hollow circuit cylinder equipped with embedding for electromagnet core
Enter slot and power supply coil coiling slot.
Further, the air gap distance between the primary coil and secondary coil is 0.1mm-1m.
Further, all small solenoid coils are fixed on by glue on corresponding magnetic core.
Further, the number of the circumference array of the primary side magnetic core is N1, the number of the circumference array of pair side magnetic core
Mesh is N2, and N1>=3, N2≥3。
Compared with the existing technology, a kind of how small coil for slewing wireless power transmission of the present invention couples
Device has the advantage that：
A kind of how small coil coupling device for slewing wireless power transmission of the present invention, using matrix type
Core structure selects the quantity and size of required magnetic core according to system requirements, substantially increases the flexibility of device, mitigates coupling
The weight of device reduces cost, while power supply coil uses how small solenoid coil form, and magnetic field is along former secondary side side stripe shape magnetic
Core forms closed circuit, and coil winds around magnetic core surrounding, so whole leakage field is smaller, has higher coupled systemes
Number, leakage field is less, and such structure is more convenient to install and dismounting, installation environment limit less, and the scope of application is big, meanwhile, this
Kind coupling device, former pair side can be used interchangeably, i.e., primary side can be used as secondary side and use, and secondary side can be used as primary side use, can both fit
For the wireless power of slewing, and it is fixing device wireless power that can be used as rotary power supply device, and such device avoids
Contact wear present in traditional slip ring power supply mode is serious, poor reliability, it is of high cost the problems such as, there is non-contact, safety
Reliable feature has and is more widely applied foreground, is suitable for wind-driven generator, satellite, radar, oil drilling, helicopter
Rotor etc. is multiple to need occasion and solar cell windsurfing to rotation power supply for electrical equipment to spacecraft main body accumulator
The case where being powered.
Description of the drawings
The attached drawing for constituting the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is a kind of how small coil coupling device for slewing wireless power transmission described in the embodiment of the present invention
Realize that fixed power supply unit is the structural schematic diagram of slewing powering mode；
Fig. 2 is a kind of how small coil coupling device for slewing wireless power transmission described in the embodiment of the present invention
Realize that rotation power supply unit is the structural schematic diagram of fixed equipment powering mode；
Fig. 3 is induction type circuit diagram；
Fig. 4 is string-string resonance topological (S-S types) figure；
Fig. 5 is string-and resonance topological (S-P types) figure；
Fig. 6 is simultaneously-string resonance topological (P-S types) figure；
Fig. 7 is simultaneously-and resonance topological (P-P types) figure；
Fig. 8 is LCL- string resonance topological (LCL-S types) figures；
Fig. 9 is LCL- and resonance topological (LCL-P types) figure；
Figure 10 is string-LCL resonance topologicals (S-LCL types) figure；
Figure 11 is simultaneously-LCL resonance topologicals (P-LCL types) figure；
Figure 12 is LCC- string resonance topological (LCC-S types) figures；
Figure 13 is LCC- and resonance topological (LCC-P types) figure；
Figure 14 is string-LCC resonance topologicals (S-LCC types) figure；
Figure 15 is simultaneously-LCL resonance topologicals (P-LCC types) figure；
Figure 16 is LCL-LCL resonance topologicals (LCL-LCL types) figure；
Figure 17 is LCC-LCC resonance topologicals (LCC-LCC types) figure；
Figure 18 is single primary side mode of resonance circuit diagram；
Figure 19 is single secondary side mode of resonance circuit diagram；
Figure 20 is that circuit topological structure derives relational graph with coupling device.
Reference sign：
1- primary side magnetic cores, 2- pairs side magnetic core, 3- primary coils, 4- secondary coils.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, a kind of how small coil coupling device for slewing wireless power transmission, including for electromagnet core
And power supply coil, described for electromagnet core is square bar magnetic core, and described for electromagnet core includes multiple primary side magnetic cores 1 and multiple
Secondary side magnetic core 2, multiple primary side magnetic cores 1 and multiple secondary side magnetic cores 2 are the skeletons surrounded according to circumference array
Type core structure, the primary side magnetic core 1 of matrix type core structure often the located supply lines opposite, described with secondary side 2 positions of magnetic core
Circle includes primary coil 3 and secondary coil 4, and the primary coil 3 and secondary coil 4 are concatenated by multiple small solenoid coils
It forms, each one small solenoid coil of coiling, coiling on the primary side magnetic core 1 and on each secondary side magnetic core 2
In opposite primary side magnetic core 1 primary coil 3 and pair corresponding, described with the position of small solenoid coil on secondary side magnetic core 2
There are air gap distances between sideline circle 4；
The bone surrounded in multiple secondary side magnetic cores 2 is arranged in the matrix type core structure that multiple primary side magnetic cores 1 surround
Outside frame type core structure, the matrix type core structure that multiple primary side magnetic cores 1 surround is connect with fixing end, multiple pairs
The matrix type core structure that side magnetic core 2 surrounds is connect with round end, and it is slewing powering mode, example to form fixed power supply unit
If the present invention can be used for the wireless power of fan paddle-changing system, original slip ring can be substituted, via coupling device, by electric energy with
Non-contacting mode gives the pitch-controlled system of wind turbine.Coupling device primary coil connects the output of inversion source at this time, as energy supply
End, secondary coil connects fan paddle-changing system, as energy pair side.Multiple primary side magnetic cores 1 and multiple secondary side magnetic cores 2 and corresponding coil
It is positioned by a magnetic core framework, and internal magnetic core framework is connect with round end (such as blower fan main shaft), external magnetic core bone
Frame is connect with fixing end (such as pedestal or shell).
As shown in Fig. 2, the matrix type core structure setting that multiple primary side magnetic cores 1 surround is in multiple secondary side magnetic cores
Inside the 2 matrix type core structures surrounded, the matrix type core structure that multiple primary side magnetic cores 1 surround is connect with round end,
The matrix type core structure that multiple secondary side magnetic cores 2 surround is connect with fixing end, and it is fixed equipment to form rotation power supply unit
Powering mode, such as applied to spacecrafts such as satellites.In view of solar cell windsurfing is to spacecraft main body electric power storage
When pond is powered, there is relative rotation in solar cell windsurfing and spacecraft main body, therefore institute of the present invention may be used
Design coupling device.Wherein solar cell windsurfing is electric energy transmitting terminal, connects coupling device primary coil 3, inner coil conduct
Primary coil 3 can carry out 360 degree rotation in space.Then secondary coil 4 is transferred electrical energy by coupling device, it is external
As secondary coil 4, secondary coil 4 is connected coil with spacecraft main body accumulator, to realize the supply of electric energy, this mould
Multiple primary side magnetic cores 1 and multiple secondary side magnetic cores 2 and corresponding coil under formula are positioned by a magnetic core framework, and internal magnetic core
Skeleton is connect with round end (such as solar cell windsurfing), and external magnetic core framework connects with fixing end (such as spacecraft)
It connects.Solar cell windsurfing and spacecraft main body, which exist, to be relatively rotated.
Magnetic core framework is hollow cylindrical, and is equipped with for electromagnet core embedded groove and power supply coil in the outer surface of hollow circuit cylinder
Coiling slot.
Air gap distance between primary coil 3 and secondary coil 4 is 0.1mm-1m, and the distance between two coils are known as gas
Stand-off distance according to actual demand from can be adjusted, air gap distance is smaller, and the coefficient of coup is bigger, can specifically select according to demand.
Will be outer for electromagnet core and power supply coil positioning except through magnetic core framework, small solenoid coil can be solid by glue
It is scheduled on corresponding magnetic core.
This device is applicable not only to regular circular axis, equally adaptable for some irregular axis.
The number of the circumference array of primary side magnetic core 1 is N1, the number of the circumference array of secondary side magnetic core 2 is N2, and N1>=3, N2
≥3.As depicted in figs. 1 and 2, primary side magnetic core and secondary side magnetic core are respectively enclosed to matrix type core structure with each 9 pieces.It can also it
The size of his quantity and magnetic core, depending on demand.
The course of work of the present invention can be generally described as follows：Primary coil 3 is given to be powered first, primary coil 3 generates after energization
Magnetic field loop be wrapped in by primary side magnetic core 1 and by secondary side magnetic core 2 by primary coil 3 in, if the electric current of primary coil 3 at this time
It changes, so that it may to generate induced voltage in secondary coil 4, energy, signal etc. are coupled to secondary sideline to realize
Circle 4.
Coupling device designed by the present invention is applicable not only to induction type wireless power, could be applicable to any type magnetic coupling
Resonance type wireless power supply is closed, and is suitable for any type resonant circuit topology, such as string-string resonance topological (S-S types),
String-and resonance topological (S-P types), and-string resonance topological (P-S types), and-and resonance topological (P-P types), LCL- go here and there resonance topological
(LCL-S types), LCL- and resonance topological (LCL-P types), string-LCL resonance topologicals (S-LCL types), and-LCL resonance topologicals (P-
LCL type), LCC- goes here and there resonance topological (LCC-S types), LCC- and resonance topological (LCC-P types), string-LCC resonance topologicals (S-LCC
Type), and-LCL resonance topologicals (P-LCC types), LCL-LCL resonance topologicals (LCL-LCL types), LCC-LCC resonance topologicals (LCC-
LCC types), equally the coupling device designed by the present invention applies also for the topological structure of unilateral resonance, and physical circuit topology is as schemed
Shown in 3- Figure 19.
In foregoing circuit topology, USFor the equivalent inversion source of system；RSFor inversion source equivalent internal resistance；R1, R2, R3, R4Respectively
The internal resistance value of inductance, R in corresponding topologyLFor system load；C0, C1, C2, C3Respectively corresponding resonance compensation capacitor.
Coupling device designed by the present invention meets mutual inductance computation modelM is coupling device mutual inductance；K is coupling
Collaboration number, calculation formulaL1, L2 are respectively former and deputy sideline turn coil inductance value.
Usually using the quality factor q 1 and Q2 of the coefficient of coup k of coupling device and original secondary coil as parametric variable,
Analysis is optimized come the output power to wireless power supply system, efficiency.The changing rule of system effectiveness is generally：The product of coil
Prime factor Q1, Q2 is higher, and k is bigger, and efficiency is higher.The efficiency or output power formula of system can be derived by by topology,
Then coupling device can be optimized according to theoretical analysis result, specific relationship block diagram is as shown in figure 20.Wherein
The quality factor of former and deputy sideline circle be denoted as respectively for：Wherein, ω is system work angular frequency, ω
=2 π f, f are system frequency.
Relevant parameter is：
Coupling device parameter variation range：
The air gap distance variation range of such coupling device is：0.1mm-1m；
Coefficient of coup k variation ranges：0.001-0.99；
Applicable system operating frequency range：50Hz-20MHz；
Self-induction of loop L1, L2 variation range:1μH-5mH.
It is applicable in loading range：0.1Ω-1000Ω.
Quality factor q parameter area：1-50000.
This coupling device suitability is high, is widely used.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (6)
1. a kind of how small coil coupling device for slewing wireless power transmission, it is characterised in that：Including for electromagnet core
And power supply coil, described for electromagnet core is square bar magnetic core, and described for electromagnet core includes multiple primary side magnetic cores (1) and more
A pair side magnetic core (2), multiple primary side magnetic cores (1) and multiple secondary side magnetic cores (2) are enclosed according to circumference array
At matrix type core structure, the primary side magnetic core (1) often located of matrix type core structure and secondary side magnetic core (2) position are opposite,
The power supply coil includes primary coil (3) and secondary coil (4), the primary coil (3) and secondary coil (4) by
Multiple small solenoid coils concatenate, on the primary side magnetic core (1) and on each secondary side magnetic core (2) around
A small solenoid coil is made, the position of opposite primary side magnetic core (1) and the small solenoid coil on secondary side magnetic core (2) is wound on
Corresponding, there are air gap distances between the primary coil (3) and secondary coil (4)；
The matrix type core structure that multiple primary side magnetic cores (1) surround is connect with fixing end, and multiple secondary side magnetic cores (2) are enclosed
At matrix type core structure connect with round end, it is slewing powering mode to form fixed power supply unit；
The matrix type core structure that multiple primary side magnetic cores (1) surround is connect with round end, and multiple secondary side magnetic cores (2) are enclosed
At matrix type core structure connect with fixing end, formed rotation power supply unit be fixed equipment powering mode.
2. a kind of how small coil coupling device for slewing wireless power transmission according to claim 1, special
Sign is：Multiple primary side magnetic cores (1) and multiple secondary side magnetic cores (2) and corresponding coil are positioned by a magnetic core framework.
3. a kind of how small coil coupling device for slewing wireless power transmission according to claim 2, special
Sign is：The magnetic core framework is hollow cylindrical, and is equipped with for electromagnet core embedded groove and power supply in the outer surface of hollow circuit cylinder
Coil winding slot.
4. a kind of how small coil for slewing wireless power transmission according to any one of claim 1-3 couples
Device, it is characterised in that the air gap distance between the primary coil (3) and secondary coil (4) is 0.1mm-1m.
5. a kind of how small coil coupling device for slewing wireless power transmission according to claim 1, special
Sign is：The small solenoid coil is fixed on by glue on corresponding magnetic core.
6. a kind of how small coil coupling device for slewing wireless power transmission according to claim 4, special
Sign is：The number of the circumference array of the primary side magnetic core (1) is N1, the number of circumference array of the pair side magnetic core (2) is
N2, and N1>=3, N2≥3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810602353.7A CN108649710A (en) | 2018-06-12 | 2018-06-12 | A kind of how small coil coupling device for slewing wireless power transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810602353.7A CN108649710A (en) | 2018-06-12 | 2018-06-12 | A kind of how small coil coupling device for slewing wireless power transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108649710A true CN108649710A (en) | 2018-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810602353.7A Pending CN108649710A (en) | 2018-06-12 | 2018-06-12 | A kind of how small coil coupling device for slewing wireless power transmission |
Country Status (1)
| Country | Link |
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| CN (1) | CN108649710A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110034613A (en) * | 2019-04-19 | 2019-07-19 | 深圳蔚蓝无限科技有限公司 | Satellite power system and satellite |
| CN112582162A (en) * | 2020-12-02 | 2021-03-30 | 哈尔滨工程大学 | Loosely coupled transformer and underwater wireless power transmission system using same |
-
2018
- 2018-06-12 CN CN201810602353.7A patent/CN108649710A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 郭铁军: "井下电能无线传输***非接触变压器研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110034613A (en) * | 2019-04-19 | 2019-07-19 | 深圳蔚蓝无限科技有限公司 | Satellite power system and satellite |
| CN112582162A (en) * | 2020-12-02 | 2021-03-30 | 哈尔滨工程大学 | Loosely coupled transformer and underwater wireless power transmission system using same |
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Application publication date: 20181012 |