CN104158478B - Space based on electromagnetic coupled wireless energy transfer high power conductive rotary joint - Google Patents
Space based on electromagnetic coupled wireless energy transfer high power conductive rotary joint Download PDFInfo
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- CN104158478B CN104158478B CN201410381932.5A CN201410381932A CN104158478B CN 104158478 B CN104158478 B CN 104158478B CN 201410381932 A CN201410381932 A CN 201410381932A CN 104158478 B CN104158478 B CN 104158478B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
Space based on electromagnetic coupled wireless energy transfer high power conductive rotary joint, including wireless power transmission mechanism and drive mechanism, wherein wireless power transmission mechanism includes that again high-frequency inversion module (2), Electro-magnetic Launcher System (3), electromagnetism receive system (4), rectification module (5), conducting slip ring (6), drives structure to include motor driver (8), motor (9), decelerator (10) and rotating shaft (11)；High-frequency inversion module (2), Electro-magnetic Launcher System (3) and conducting slip ring (6) are fixed on rotary side shell (14), electromagnetism reception system (4), rectification module (5), motor driver (8), motor (9), decelerator (10) are fixed on Stationary side shell (15), Stationary side shell (15) are supported on rotary side shell (14) by top bearing (16) and bottom bearing (17) internal.The noncontact that the present invention can realize sun generating battle array and launching antenna array is electrically connected, improves the working life of Wireless power transmission.
Description
Technical field
The invention belongs to space industry, relate to one be applied to Wireless power transmission connect the sun generating battle array and
The high power conductive rotary joint of launching antenna array.
Background technology
In order to realize the comprehensive utilization to space solar and exploitation, based on the U.S. and the developed country of Japan
Have been put into a large amount of personnel and carry out Wireless power transmission technical research widely.Wireless power transmission
SPSS (SPS-Solar Power Satellite, SSPS-Space Solar Power System, SBSP-
Space Based Solar Power) it is to convert solar energy into electrical energy in space, more otherwise
It is transferred to the ground power system for ground.The foundation of Wireless power transmission is intended to utilize space too
Sun can provide GW level electric power for ground, wherein Wireless power transmission construction, run, manage all right and wrong
The engineering of Chang Hong great.
In order to ensure the efficiency operation of Wireless power transmission, solar array must rotate tracking continuously
The position of the sun, and earth receiving station is oriented by launching antenna array.Within an orbital period, solar cell
Battle array reaches 360 degree with the relative change in location launched between antenna, so must using and can rotating continuously
High power conductive rotating mechanism realizes power supply unit (sun generating battle array) and electrical equipment (launching antenna array)
Connection.Space industry the most both at home and abroad, the high power conductive rotary joint having obtained actual application is main
It is divided into sliding ring type and rolling loop type two kinds, is contact type structure.Although these contact rotary conductive joints are
On various rotatable interfaces through being widely used in satellite and space station, but owing to the moment of friction of slip ring is relatively big,
Sliding contact surface abrasion is serious, contact resistance is relatively big, hot-spot, has caused short circuit or local two
The problem of secondary electric discharge, these limitation will be difficult to meet the bigger through-put power of Wireless power transmission, longer fortune
Row life-span and the demand of higher reliability.
Publication No. 103076812, the Chinese patent of entitled " a kind of novel solar array drive mechanism "
Disclose a kind of solar array drive mechanism, this drive mechanism in order to overcome conducting slip ring contact resistance heat waste and
The problem of tribo-charging, eliminates conducting slip ring, causes the rotational work that conduction rotary joint does not have 360 degree
Can, rely on the most positive and negative the transferring of driver control solar array to avoid it to do 360 degree of motions.As large-scale
Space structure, driving sun generating battle array to rotate needs to expend the biggest energy, if 360 degree of rotations can not be carried out
Turning, then need to be used for significant portion of energy the reciprocating rotary of sun generating battle array, it is heterodromous huge
Inertia also can be given and drive structure bring huge damage and control difficulty, is therefore difficult to Wireless power transmission
Or other Large Spacecraft.
Summary of the invention
Present invention solves the technical problem that and be: overcome the contact abrasion of existing conducting joint, space electric discharge and local
The problem such as overheated, it is provided that a kind of space based on electromagnetic coupled wireless energy transfer high power conductive rotates and closes
Joint, it is possible to achieve the noncontact of Wireless power transmission sun generating battle array and launching antenna array is electrically connected, carries
The high working life of Wireless power transmission, safety and work efficiency.
The technical solution of the present invention is: space based on electromagnetic coupled wireless energy transfer high power conductive
Rotary joint, including wireless power transmission mechanism and drive mechanism, wherein wireless power transmission mechanism includes again
High-frequency inversion module, Electro-magnetic Launcher System, electromagnetism receive system, rectification module, conducting slip ring, drive knot
Structure includes motor driver, motor, decelerator and rotating shaft；High-frequency inversion module, Electro-magnetic Launcher System and lead
Electric slip ring is fixed on rotary side shell, electromagnetism receive system, rectification module, motor driver, motor,
Decelerator is fixed on Stationary side shell, and Stationary side shell is being revolved by top bearing and bottom bearings
Change one's position enclosure；The end of rotary side shell is fixed by the central rotating shaft of fastening bolt with solar battery array,
The two keeps geo-stationary, and Stationary side casing ends is solid with the central rotating shaft of launching antenna array by fastening bolt
Fixed, the two keeps geo-stationary；One end of rotating shaft is electric with the sun after passing Stationary side shell and rotary side shell
The central rotating shaft of Chi Zhen is coaxial, and the other end of rotating shaft is coaxially connected with decelerator；The electricity that solar battery array is drawn
Source cable power line through hole bottom the end of rotary side shell enter and with the input of high-frequency inversion module
Connecting, the holding wire that solar battery array is drawn holding wire through hole bottom rotary side casing ends penetrates conduction
Slip ring；Electro-magnetic Launcher System is close to the inner side of rotary side shell, the coil of Electro-magnetic Launcher System and high-frequency inversion
The outfan of module connects；Electromagnetism receives the coil helix of system and is around on magnetic core, and magnetic core is fixed on transmitting sky
On the pedestal of linear array；The rotating shaft of motor is coaxially connected with decelerator, and Stationary side shell is fixed in the rear end of motor,
Rectification module and motor driver are individually fixed in the top and bottom of Stationary side shell；Electromagnetism receives system
Coil is connected with the input of rectification module, the outfan of rectification module and the signal leading-out terminal of conducting slip ring
All it is connected with launching antenna array；Solar azimuth information is passed through conduction by the sun sensor within solar battery array
Slip ring sends launching antenna array to, and the control computer within launching antenna array is counted after obtaining solar azimuth information
Calculate the required angle rotated of solar battery array, and motor rotating cycle instruction corresponding for the angle rotated is led to
Crossing holding wire and be sent to motor driver, motor driver produces pulse signal according to instruction and drives motor,
The rotating shaft of motor drives rotating shaft to rotate required angle after promoting torque by decelerator, complete solar battery array
Day is followed the tracks of orientation；The solar energy that solar battery array is collected is converted into DC electric power, is sent to by cable
High-frequency inversion module, DC electric power is reverse into AC power to drive Electromagnetic Launching by high-frequency inversion module
System, electric energy is sent to electromagnetism by coil with electromagnetic coupling energy transmission form and receives by Electro-magnetic Launcher System
The coil of system, electromagnetism is received the AC power that system receives and is transformed to DC electric power by rectification module,
Launching antenna array is flowed to again through cable.
The coil of described Electro-magnetic Launcher System and electromagnetism receive the coil of system and use the noncontact side of being co-axially mounted
Formula.The coil of described Electro-magnetic Launcher System and electromagnetism receive the coil of system and all use silver-plated copper pipe to constitute,
Distance between two coils is less than 10cm.The described high-frequency electrical voltage-frequency handled by high-frequency inversion module
Rate between 0.5MHz to 25MHz, preferably 1MHz.Described high-frequency inversion module is by polyimides
Plate is separated by with conducting slip ring.
Present invention advantage compared with prior art is: the present invention conducts electricity the round end of rotary joint and static
End uses coaxial sleeve cartridge type to install, and round end as internal ring, has the rotation of 360 degree as outer shroud, stationary end
Rotating function, it is possible to realize Direct to the sun function flexibly, overcome part existing can not realize 360 degree rotate lead
Electricity joint must by drive the reciprocating rotary of sun generating battle array realize the energy loss that Direct to the sun causes big,
Structural damage is serious and controls the drawback that difficulty is big.The conducting joint of the present invention uses electromagnetic coupling energy transmission
Mode replace tradition brush and noble metal contacts mode through-put power, due to rotary joint round end, static
End does not contacts, and will not produce the bits that rub, overcome the contact conducting slip ring of existing conducting joint due to slip ring
Moment of friction is relatively big, sliding contact surface abrasion is serious, contact resistance is relatively big, hot-spot, causes short circuit
Or the problem of local secondary electric discharge, it is obviously improved working life and the conducting joint transmission of electricity effect of conducting joint
Rate.Additionally, the present invention is conducted electricity rotary joint and is used electromagnetic coupling energy transmission system and conducting slip ring combination side
Formula realizes transmitting while electrical power and signal, it is to avoid the transmission of single use electromagnetic coupling energy can only be transmitted
Electrical power cannot accurately transmit the drawback of signal.
Accompanying drawing explanation
Fig. 1 is the high power conductive rotary joint of the present invention schematic layout pattern in Wireless power transmission system；
Fig. 2 is the schematic diagram of high power conductive rotary joint of the present invention；
Fig. 3 is the structure chart of high power conductive rotary joint of the present invention.
Detailed description of the invention
Electromagnetic coupled wireless energy transmission technology can realize electric energy is transported to electricity consumption and is set from power supply unit is wireless
Standby, along with the continuous research and development of this technology, have begun to be applied to the charging of low-power equipment, even
It can be charging electric vehicle.Utilize the contactless energy transmission feature of this technology, can be by Large Spacecraft
Conduction rotary joint be designed with the structure of electromagnetic coupled wireless transmission function, overcome conventional conductive joint
Frictional dissipation, secondary discharge and the local problems of excessive heat caused due to the friction of slip ring contact portion, improves space flight
The working life of device, safety and work efficiency.
As it is shown in figure 1, the space high power conductive rotary joint of the present invention is for connection space solar power station
Sun generating battle array and launching antenna array, its Central-South conduction rotary joint connects south solar battery array and launches sky
Linear array, north conduction rotary joint is used for connecting north solar battery array and launching antenna array.Wireless power transmission
Power generation process as follows: solar battery array collect solar energy and be converted into electric energy through conducting joint be transferred to send out
Penetrating antenna array, launching antenna array converts electrical energy into microwave energy and is transmitted into ground；Solar battery array passes through simultaneously
The azimuth information of the internal sun sensor sensing sun, passes in launching antenna array through conduction rotary joint
The control computer in portion, this control computer export control instruction gives conduction rotary joint so that it is rotate corresponding
Angle orients to realize the tracking to the sun, thus meets solar battery array and can farthest obtain the sun
Energy.
As in figure 2 it is shown, the space high power conductive rotary joint of the present invention, including wireless power transmission mechanism
And drive mechanism.Wireless power transmission mechanism includes again high-frequency inversion module 2, Electro-magnetic Launcher System 3, electricity
Magnetic receive system 4, rectification module 5, conducting slip ring 6, drive structure include motor driver 8, motor 9,
Decelerator 10 and the rotating shaft 11 of conduction rotary joint.
The operation principle of space high power conductive rotary joint is as follows: solar battery array 1 is fixed on conduction and rotates
The round end in joint, solar azimuth information is passed through conducting slip ring by the sun sensor within solar battery array 1
6 send celestial body or launching antenna array 7 even load to.Conducting slip ring 6 both sides all use holding wire and the sun
Cell array 1 is connected with launching antenna array 7.Control computer within launching antenna array 7 obtains solar azimuth
Calculate the required angle rotated of solar battery array after information, and motor corresponding for the angle rotated is rotated circle
Number instruction is sent to motor driver 8 by holding wire, and motor driver 8 produces pulse signal according to instruction
Driving motor 9 to work, after the rotating shaft of motor 9 promotes torque by decelerator 10, band moving conductive rotates pass
The rotating shaft 11 of joint rotates required angle, and complete solar battery array 1 follows the tracks of orientation to day.Solar battery array 1
The solar energy collected is converted into DC electric power, is sent to the height of conduction rotary joint by power source bus cable
Frequently inversion module 2, DC electric power is reverse into high-frequency ac electrical power to drive electricity by high-frequency inversion module 2
Magnetic emission system 3, high frequency voltage frequency can be preferably selected 1MHz between 0.5MHz to 25MHz
Neighbouring frequency, electric energy is sent with electromagnetic coupling energy transmission form by Electro-magnetic Launcher System 3 by transmitting coil
The receiving coil of system 4 is received to electromagnetism.Wherein, in order to improve the coupled systemes of transmitting coil and receiving coil
Number, increases the power transmission efficiency of wireless power transmission mechanism, transmitting coil and receiving coil and uses high quality factor
Coil, and the two distance should be less than 10cm.Electromagnetism receives the alternating current process that system 4 receives
The power conversion of rectification module 5, is DC electric power by high-frequency ac electrical power conversion, then through bus line
Cable flows to launching antenna array 7.
High power DC electric energy is converted into high-frequency ac electric energy by high-frequency inversion module 2, is loaded into Electromagnetic Launching
The spiral winding circuit of system, can use existing high frequency power amplification module.Electro-magnetic Launcher System 3 and electricity
Magnetic receives system 4 and is made up of the higher coupling spiral winding of quality factor and electric capacity.Rectification module 5 mainly will
The high-frequency electrical energy rectification of electromagnetism reception system is converted into direct current energy and exports to load.Conducting slip ring 6 can use
Typical sliding ring type or rolling loop type conducting slip ring, this series products is successfully used for the solar array of various countries' spacecraft
Drive mechanism, such as MOOG company's T OPEX/Poseidon SADA, RUAG company of Switzerland SEPTA23
SADA。
The space high power conductive rotary joint internal structure of the present invention is as it is shown on figure 3, this space is high-power leads
The rotary side of electricity rotary joint includes: fastening bolt 13, rotary side shell 14, high-frequency inversion module 2, the end
End bearing 17, top bearing 16, conducting slip ring 6 and Electro-magnetic Launcher System 3.Stationary side includes: electromagnetism connects
Receipts system 4, magnetic core 12, rotating shaft 11, decelerator 10, motor 9, motor driver 8, rectification module 5
With Stationary side shell 15.
Rotary side shell 14 end is fixed by the central rotating shaft of fastening bolt 13 with solar battery array 1, and two
Person keeps geo-stationary；Stationary side shell 15 end is by the center of fastening bolt 13 with launching antenna array 7
Rotating shaft is fixed, and the two keeps geo-stationary.The rotating shaft 11 of conduction rotary joint is by fastening bolt 13 and rotation
Shell 14 end of changing one's position is fixed, and rotating shaft 11 is coaxial with the central rotating shaft of solar battery array 1, and rotating shaft 11 is
Titanium alloy hollow axle.The power cable that solar battery array 1 is drawn is from rotary side shell 14 end bottom power
Line three-way hole enters and is connected with high-frequency inversion module 2, and the holding wire that solar battery array 1 is drawn is from rotary side
Shell 14 end bottom signal line three-way hole penetrates conducting slip ring 6, high-frequency inversion module 2 by polyimide plate with lead
Electric slip ring 6 is separated by.The spiral winding of Electro-magnetic Launcher System 3 is close to the inner side of rotary side shell 14, magnetic core
12 are shaped as hollow cylinder, are fixed on the pedestal of launching antenna array 7, and electromagnetism receives the coil of system 4
Spiral is around on magnetic core 12, and coil can use silver-plated copper pipe to constitute.Fastening bolt is passed through in the front end of motor 9
13 are coaxially connected with decelerator 10, and Stationary side shell is fixed on by fastening bolt 13 in the rear end of motor 9
15, rectification module 5 and motor driver 8 are individually fixed in the top and bottom of Stationary side shell 15.Quiet
Only side shell 15 is supported on rotary side shell 14 inside by bottom bearing 17 and top bearing 16.
The content not being described in detail in description of the invention belongs to the known technology of those skilled in the art.
Claims (5)
1. space based on electromagnetic coupled wireless energy transfer high power conductive rotary joint, it is characterised in that:
Including wireless power transmission mechanism and drive mechanism, wherein wireless power transmission mechanism includes again high-frequency inversion mould
Block (2), Electro-magnetic Launcher System (3), electromagnetism receive system (4), rectification module (5), conducting slip ring (6),
Structure is driven to include motor driver (8), motor (9), decelerator (10) and rotating shaft (11)；High frequency
Inversion module (2), Electro-magnetic Launcher System (3) and conducting slip ring (6) are fixed on rotary side shell (14)
On, electromagnetism receives system (4), rectification module (5), motor driver (8), motor (9), decelerator
(10) it is fixed on Stationary side shell (15), by top bearing (16) on Stationary side shell (15)
It is supported on rotary side shell (14) inside with bottom bearing (17)；The end of rotary side shell (14) leads to
The central rotating shaft crossing fastening bolt (13) and solar battery array (1) is fixed, and the two keeps geo-stationary,
Stationary side shell (15) end is solid with the central rotating shaft of launching antenna array (7) by fastening bolt (13)
Fixed, the two keeps geo-stationary；One end of rotating shaft (11) passes outside Stationary side shell (15) and rotary side
Shell (14) is coaxial with the central rotating shaft of solar battery array (1) afterwards, the other end of rotating shaft (11) and deceleration
Device (10) is coaxially connected；The power cable that solar battery array (1) is drawn is from rotary side shell (14)
Power line through hole bottom end enters and is connected with the input of high-frequency inversion module (2), solar battery array
(1) holding wire drawn holding wire through hole bottom rotary side shell (14) end penetrates conducting slip ring
(6)；Electro-magnetic Launcher System (3) is close to the inner side of rotary side shell (14), Electro-magnetic Launcher System (3)
Coil be connected with the outfan of high-frequency inversion module (2)；Electromagnetism receive system (4) coil helix around
On magnetic core (12), magnetic core (12) is fixed on Stationary side shell (15)；The rotating shaft of motor (9)
Coaxially being connected with decelerator (10), Stationary side shell (15), rectification mould are fixed in the rear end of motor (9)
Block (5) and motor driver (8) are individually fixed in the top and bottom of Stationary side shell (15)；Electromagnetism
The coil of reception system (4) is connected with the input of rectification module (5), the output of rectification module (5)
The signal leading-out terminal of end and conducting slip ring (6) is all connected with launching antenna array (7)；Solar battery array (1)
Internal sun sensor sends solar azimuth information to launching antenna array (7) by conducting slip ring (6),
Needed for calculating solar battery array after the control computer acquisition solar azimuth information that launching antenna array (7) is internal
The angle rotated, and motor rotating cycle instruction corresponding for the angle of rotation is sent to motor by holding wire
Driver (8), motor driver (8) produces pulse signal according to instruction and drives motor (9), motor
(9) rotating shaft drives rotating shaft (11) to rotate required angle after promoting torque by decelerator (10), complete
Become solar battery array (1) follows the tracks of orientation to day；The solar energy that solar battery array (1) is collected is converted into directly
Stream electrical power, sends high-frequency inversion module (2) to by cable, and high-frequency inversion module (2) is by unidirectional current
Power inverting becomes AC power to drive Electro-magnetic Launcher System (3), and Electro-magnetic Launcher System (3) passes through line
Enclose the coil that with electromagnetic coupling energy transmission form, electric energy is sent to electromagnetism reception system (4), rectification module
(5) electromagnetism is received the AC power that system (4) receives and is transformed to DC electric power, then through line
Cable flows to launching antenna array (7).
Space based on electromagnetic coupled wireless energy transfer the most according to claim 1 high power conductive
Rotary joint, it is characterised in that: the coil of described Electro-magnetic Launcher System (3) receives system (4) with electromagnetism
Coil use noncontact be co-axially mounted mode.
Space based on electromagnetic coupled wireless energy transfer the most according to claim 1 and 2 is high-power
Conduction rotary joint, it is characterised in that: the coil of described Electro-magnetic Launcher System (3) and electromagnetism receive system
(4) coil all uses silver-plated copper pipe to constitute, and the distance between two coils is less than 10cm.
Space based on electromagnetic coupled wireless energy transfer the most according to claim 1 and 2 is high-power
Conduction rotary joint, it is characterised in that: the described high frequency voltage frequency handled by high-frequency inversion module (2)
Between 0.5MHz to 25MHz.
Space based on electromagnetic coupled wireless energy transfer the most according to claim 1 and 2 is high-power
Conduction rotary joint, it is characterised in that: described high-frequency inversion module (2) is sliding with conduction by polyimide plate
Ring (6) is separated by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410381932.5A CN104158478B (en) | 2014-08-05 | 2014-08-05 | Space based on electromagnetic coupled wireless energy transfer high power conductive rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410381932.5A CN104158478B (en) | 2014-08-05 | 2014-08-05 | Space based on electromagnetic coupled wireless energy transfer high power conductive rotary joint |
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| CN104158478A CN104158478A (en) | 2014-11-19 |
| CN104158478B true CN104158478B (en) | 2016-08-24 |
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| CN201410381932.5A Expired - Fee Related CN104158478B (en) | 2014-08-05 | 2014-08-05 | Space based on electromagnetic coupled wireless energy transfer high power conductive rotary joint |
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Families Citing this family (15)
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| CN104734517A (en) * | 2015-03-03 | 2015-06-24 | 华东交通大学 | Direct current transformer circuit based on magnetic coupling wireless power transmission |
| CN105217057B (en) * | 2015-09-17 | 2017-05-10 | 中国空间技术研究院 | Intersatellite energy transmission device based on tethered docking |
| CN105529986B (en) * | 2015-12-01 | 2018-07-03 | 上海宇航系统工程研究所 | Space driving mechanism based on loosely coupled transformer wireless energy transfer |
| CN106159622B (en) * | 2016-08-15 | 2018-09-28 | 昆山市东浩塑胶机械有限公司 | rotary joint |
| CN107703975A (en) * | 2017-08-30 | 2018-02-16 | 长光卫星技术有限公司 | Wireless energy transfer type windsurfing is to day tracking system |
| US10538344B2 (en) | 2017-09-18 | 2020-01-21 | Solaero Technologies Corp. | Power management system for space photovoltaic arrays |
| CN109067005B (en) * | 2018-06-26 | 2022-07-01 | 上海航天设备制造总厂有限公司 | Contactless power supply device for rotating electromechanical apparatus |
| CN109888893B (en) * | 2019-02-28 | 2021-01-19 | 西安交通大学 | Two-degree-of-freedom WPT coil structure |
| CN111114839B (en) * | 2020-02-11 | 2021-03-16 | 中国科学院微小卫星创新研究院 | Solar cell array driving mechanism |
| CN111354257B (en) * | 2020-04-02 | 2021-11-30 | 沈阳航空航天大学 | Space solar power station ground experiment platform |
| CN111427384B (en) * | 2020-04-03 | 2022-03-22 | 西北大学 | Solar power station and method capable of expanding line focusing space |
| CN111585357B (en) * | 2020-06-12 | 2021-11-09 | 中国电子科技集团公司第三十六研究所 | Rotatory conducting ring of induction type via hole |
| CN111756435A (en) * | 2020-07-07 | 2020-10-09 | 中国科学院微小卫星创新研究院 | Power and signal transmission system |
| CN112564303B (en) * | 2020-12-15 | 2023-09-26 | 重庆前卫无线电能传输研究院有限公司 | Sleeve type wireless power transmission coupling mechanism |
| CN114441077A (en) * | 2021-12-28 | 2022-05-06 | 四川诚邦浩然测控技术有限公司 | Strain type torque and rotating speed sensor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3627104B2 (en) * | 2001-11-29 | 2005-03-09 | 三菱電機株式会社 | Power generation satellite and transmitting antenna device |
| US8030888B2 (en) * | 2007-08-13 | 2011-10-04 | Pandya Ravi A | Wireless charging system for vehicles |
| CN101505071A (en) * | 2009-03-19 | 2009-08-12 | 无锡康华钢构安全监测科技有限公司 | Short range wireless electrical power transmission apparatus and transmission method thereof |
| CN103532256B (en) * | 2013-10-31 | 2016-09-14 | 武汉大学 | A kind of novel radio power transfer |
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