CN104779716B - Low-power multi-load wireless powered adaptive DC voltage stabilizing system - Google Patents
Low-power multi-load wireless powered adaptive DC voltage stabilizing system Download PDFInfo
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- CN104779716B CN104779716B CN201510191946.5A CN201510191946A CN104779716B CN 104779716 B CN104779716 B CN 104779716B CN 201510191946 A CN201510191946 A CN 201510191946A CN 104779716 B CN104779716 B CN 104779716B
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- 230000000087 stabilizing effect Effects 0.000 title abstract 5
- 230000003044 adaptive effect Effects 0.000 title abstract 3
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims abstract description 19
- 238000004146 energy storage Methods 0.000 claims description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 230000006978 adaptation Effects 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 description 17
- 238000005516 engineering process Methods 0.000 description 5
- 230000005415 magnetization Effects 0.000 description 5
- 238000005381 potential energy Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- -1 medical treatment Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H02J5/005—
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- H02J7/025—
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses a low-power multi-load wireless powered adaptive DC voltage stabilizing system which comprises an adjustable high-frequency power supply system, an energy emission main resonator, a wireless power supply coil array, an adjustable high-frequency compensation capacitor, a multi-energy conversion type DC stabilizing system, a voltage acquisition feedback module and a multi-load array, wherein the multi-energy conversion type DC stabilizing system supplies energy to the load through an energy conversion mode of electromagnetic energy-magnetic potential energy-mechanical energy-electric energy. The low-power multi-load wireless powered adaptive DC voltage stabilizing system solves the problems that a low-power load node is unstable in power supply voltage and is limited in the power supply mode, particularly solves the problems that the sensor node or implantable equipment of human body and the like under an Internet of things system are difficult in power supply and troublesome in battery replacement; the system is stable in power supply performance, has no characteristics of virtual-high voltage turn-off and over-current conduction in a conventional rectification and voltage-stabilizing system, and is high in anti-interference ability.
Description
Technical field
The present invention relates to a kind of wireless charging technology, more particularly to a kind of small-power multi load wireless power self-adaptive direct
Stream voltage-stabilizing system.
Background technology
In recent years, as the continuous improvement and exploration of people's living standard are intramundane gradually deeply, people are to electric energy
Transmission means and transmission quality there has also been new requirement.Traditional electric energy transmission is mainly entered by wire or conductor directly contact
It is capable, contact the spark that produces, skimming wear, carbon deposit and involve that energized conductor is exposed etc. to bring series of problems.Radio energy
Transmission is a kind of technology of utilization wireless radio transmission electric energy, is proposed by Ni Gula teslas earliest, with traditional electric energy transmission side
Formula is compared, and there is no being directly connected to for electricity during wireless power transmission between power supply and electricity consumption, it is to avoid bare exposed conductor and
Contact sparking, has the advantages that to use conveniently, safely, thus receives the concern and attention of numerous research workers.Radio
Can transmission technology application widely, particularly military affairs, mine, under water, medical treatment, oil, traffic etc. it is special and severe
It is with a wide range of applications under environment.Therefore, for the research of wireless power transmission technology has very profound significance.
The power supply mode that low-power load is particularly such as sensor node is most by the way of battery is changed, more singly
One, it is impracticable, meanwhile, limited battery life, large-scale battery of changing not only expend substantial amounts of manpower, financial resources, and environment is deposited
Greatly polluting, and the low-power load battery under special occasions is not easy to change, or even can cause personal safety as well as the property safety
Infringement.The consideration of power supply environment for more than, the low-power load under special occasions is powered can be made using lithium battery
For accessory power supply, the life cycle of battery is so greatly extended, while also can guarantee that the normal work of each low-power load.
Specifically, the injection that battery is desirable for direct current energy is loaded, and the energy of radio energy transmission system transmission
For high-frequency electrical energy, there is certain relation with transmission range in its frequency, typically in hundreds of kHz to several MHz, it is impossible to by battery
Directly benefit from.
The content of the invention
Goal of the invention：For above-mentioned prior art, a kind of small-power multi load wireless power self adaptation DC voltage-stabilizing is proposed
System, can provide stable DC electric energy for multiple low-power loads.
Technical scheme：A kind of small-power multi load wireless power self adaptation direct current voltage-stabilizing system, including tunable high-frequency power supply
System, energy launch total resonator, wireless power coil array, some multi-energy conversion type DC voltage-stabilizing systems and multi load battle array
Row；The tunable high-frequency power-supply system is used for the adjustable high-frequency alternating current of output and launches total resonator, institute to the energy
State energy transmitting resonator and the wireless power coil array is sent the power to by magnetic resonance mode；The wireless power line
Circle array includes several energy radio receivers, the electric energy output end correspondence connection one of each energy radio receiver
Multi-energy conversion type DC voltage-stabilizing system；
Wherein, described each multi-energy conversion type DC voltage-stabilizing system include with soft iron material prepare magnetisable magnetic pole,
Rigid magnet, multi-layer piezoelectric energy-storage system and energy-storage capacitor；The magnetisable magnetic pole, rigid magnet, multi-layer piezoelectric energy storage system according to
It is secondary to be arranged on energy radio receiver side, and arrange with the power coil concentric shafts of radio receiver；The rigid magnet
It is close to the piezoelectric patches of multi-layer piezoelectric energy-storage system, the electric energy output end of multi-layer piezoelectric energy-storage system connects the energy-storage capacitor
Input, the outfan of the energy-storage capacitor connect a load node in the multi load array.
Used as the preferred version of the present invention, the magnetisable magnetic pole is I-shaped structure, and its main body is column structure, round
The area of a circle of rod structure both ends of the surface is 1.5 times of respectively cylindrical cross section.
Further, described each multi-energy conversion type DC voltage-stabilizing system also includes voltage acquisition feedback module, described
Voltage collection feedback module is used to gather multi-layer piezoelectric energy-storage system output voltage size and compare with load node required voltage
Afterwards, feedback control signal is to the tunable high-frequency power-supply system.
Beneficial effect：A kind of small-power multi load wireless power self adaptation direct current voltage-stabilizing system of the present invention, by multipotency
Amount conversion type DC voltage-stabilizing system can be through electromagnetic energy-magnetic potential energy-mechanical energy-by the high-frequency electromagnetic in radio energy transmission system
The energy conversion regime of electric energy is converted to the direct current energy of load required voltage grade, while by voltage acquisition feedback module certainly
Adapt to increase the output of power end, on the premise of proof load normal work, efficiently using electric energy, it is to avoid cause energy
The waste in source.High-frequency electrical energy isolated output both can be avoided different negative by multi-energy conversion type DC voltage-stabilizing system again
Carry the impact accessed to radio energy transmission system output performance.Easy magnetization high saturation soft iron material is under high frequency magnetic field by magnetic
Change, form magnetic pole, be magnetic potential energy by electromagnetic energy, and magnetic potential can be converted into into high-strength rigid Magnet in the form of magnetic thrust
Mechanical energy, this can convert high-frequency electromagnetic for magnetic potential energy, finally be exported in the form of mechanical energy, and this is that first order load is accessed
With the shielding system of system power output, it is to avoid the impedance mismatch problem that load is accessed and brought.High-strength rigid Magnet is tight
The close multi-layer piezoelectric energy-storage system of high energy is pasted and oppresses, while mechanical energy is converted into electric energy, this is second level shielding system.
Description of the drawings
Fig. 1 is a kind of small-power multi load wireless power self adaptation direct current voltage-stabilizing system structural representation；
The magnetisable field structure schematic diagrams of Fig. 2.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is done and is further explained.
As shown in figure 1, a kind of small-power multi load wireless power self adaptation direct current voltage-stabilizing system, including tunable high-frequency power supply
It is many that system, energy launch total resonator, wireless power coil array, some multi-energy conversion type DC voltage-stabilizing systems and small-power
Load array.Tunable high-frequency power-supply system for civil power to be converted into the high-frequency electrical energy of radio energy transmission system, by power
Adjustable high-frequency alternating current is sent to energy launches total resonator.Energy launch total resonator include high frequency compensation tunable capacitor and
Energy transmitting coil, causes energy to launch total resonator under resonant condition, by height by adjusting high frequency compensation tunable capacitor
Frequency electric energy is converted into high-frequency electromagnetic energy.Wireless power coil array includes several energy radio receivers, each energy without
Line reception device is connected in series with a high frequency compensation tunable capacitor by a power coil and is constituted.In wireless power coil array
Each power coil array and energy transmitting coil in arranged in parallel, and cause each power coil and energy transmitting coil away from
From consistent, the high frequency compensation tunable capacitor for adjusting each power coil series connection causes its resonant frequency and tunable high-frequency power-supply system
Operating frequency and energy are launched the resonant frequency three of total resonator and keep identical, receive energy by EMR electromagnetic resonance coupled modes
Launch the high-frequency electromagnetic energy that total resonator sends.
Wherein, each multi-energy conversion type DC voltage-stabilizing system includes magnetisable magnetic pole, the Hard Magnetic prepared with soft iron material
Ferrum, multi-layer piezoelectric energy-storage system, energy-storage capacitor and voltage acquisition feedback module.Magnetisable magnetic pole, rigid magnet, multi-layer piezoelectric
Energy-storage system is successively set on energy radio receiver side, and arranges with the power coil concentric shafts of radio receiver.
Magnetisable magnetic pole and multi-layer piezoelectric energy-storage system are fixedly installed, and rigid magnet is close to the piezoelectric patches of multi-layer piezoelectric energy-storage system, multilamellar
The electric energy output end of piezoelectric energy-storage system connects the input of energy-storage capacitor, the outfan connection multi load battle array of energy-storage capacitor
A load node in row.Wherein, magnetisable magnetic pole is prepared using the soft iron material of easy magnetization high saturation, and rigid magnet is height
Intensity rigid magnet.As shown in Fig. 2 magnetisable magnetic pole is I-shaped structure, its main body is column structure, in order to ensure magnetization speed
Degree and magnetic thrust strength, the area of a circle of column structure both ends of the surface is 1.5 times of respectively cylindrical cross section, column structure one
End face is close to the piezoelectric patches of multi-layer piezoelectric energy-storage system.Wherein, magnetisable magnetic pole, rigid magnet, multi-layer piezoelectric energy-storage system and
The size and electrical characteristic of energy-storage capacitor can be selected according to actual needs.
Electric energy output end correspondence one multi-energy conversion type DC voltage-stabilizing system of connection of each energy radio receiver,
The electric energy for receiving is magnetized magnetisable magnetic pole by energy radio receiver, and easy magnetization high saturation soft iron material is under high frequency magnetic field
It is magnetized, forms magnetic pole, is magnetic potential energy by electromagnetic energy；Magnetisable magnetic pole with magnetic potential energy is converted in the form of magnetic thrust
For the kinetic energy of high-strength rigid Magnet, the close piezoelectric patches of high energy of rigid magnet compressing multi-layer piezoelectric energy-storage system, mechanical energy is converted into
Electric energy；The electric energy output end of multi-layer piezoelectric energy-storage system connects the input of energy-storage capacitor, and energy-storage capacitor is stored for depositing
The electric energy that the close multi-layer piezoelectric energy-storage system of storage high energy is produced, in the outfan connection small-power multi load array of energy-storage capacitor
One load node, output electric energy supply low-power load are used.In order to be able to make multi-layer piezoelectric energy-storage system quick acting, and protect
Card magnetic is pushed away and can be maximized, and the operating frequency of the system should be soft iron material magnetic saturation frequency.
Voltage acquisition feedback module in each multi-energy conversion type DC voltage-stabilizing system is that the output of single input channel list is logical
Road Real-time Collection control module, the module are connected to the close multi-layer piezoelectric energy-storage system two ends of high energy, and Real-time Collection high energy is close
Multi-layer piezoelectric energy-storage system output voltage size.In the present embodiment, small-power multi load array is by some lithium battery groups into one
Low-power load one wireless power coil of correspondence, and by a multi-energy conversion type self adaptation direct current voltage-stabilizing system and power supply
Inductance loop seclusion connects.When the voltage Vg that each voltage acquisition feedback module is collected is all higher than corresponding load node voltage Vs
When, system worked well；When the voltage Vg that wherein free voltage collection feedback module is collected is less than load node required voltage
During Vs, the voltage acquisition feedback module sends control signal to high frequency power source system, drives tunable high-frequency power-supply system to increase defeated
Go out power so that the Vg ＞ Vs of output, realize the output of Automatic adjusument tunable high-frequency power-supply system.Wherein, each is more
Energy-storage capacitor in energy conversion DC voltage-stabilizing system can enter to the voltage of the close multi-layer piezoelectric energy-storage system output of high energy
Row adaptation is adjusted so as to meet the electric pressure of its connection load.
Compared with prior art, small-power multi load wireless power self adaptation direct current voltage-stabilizing system of the invention has as follows
Feature：1st, concept is changed using multi-energy in radio energy transmission system, uppity high-frequency electromagnetic can be passed through into various
Form transformation of energy, finally gives the controllable direct current energy of electric pressure, meets the requirement of low-power load.2nd, utilize easy magnetization
Electromagnetic energy is magnetic potential energy by high saturation soft iron material and high-strength rigid Magnet, and magnetic potential can be turned in the form of magnetic thrust
The mechanical energy of high-strength rigid Magnet is turned to, this is that first order load accesses the shielding system with system power output.3rd, using high
The close multi-layer piezoelectric energy-storage system of high energy is close to and is oppressed to intensity rigid magnet, and mechanical energy is converted into electric energy, and this is that radio energy is passed
Energy secondary conversion equipment in defeated system, and secondary isolation output device, are the direct energy sources of DC load.4th, originally
The self adaptation direct current voltage-stabilizing system of the radio energy transmission system that invention is provided can provide required voltage for multiple low-power loads
The stable DC electric energy of grade, and the variation that can be accessed with load node, the high frequency that self adaptation is injected needed for increasing or decreasing
Electric energy, power supply performance are stable, and the shut-off virtual height voltage and conducting overcurrent not existed appeared in conventional rectification voltage-stabilizing system is special
Property, strong antijamming capability.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (1)
1. a kind of small-power multi load wireless power self adaptation direct current voltage-stabilizing system, it is characterised in that：Including tunable high-frequency power supply
System, energy launch total resonator, wireless power coil array, some multi-energy conversion type DC voltage-stabilizing systems and multi load battle array
Row；The tunable high-frequency power-supply system is used for the adjustable high-frequency alternating current of output and launches total resonator, institute to the energy
State energy transmitting resonator and the wireless power coil array is sent the power to by magnetic resonance mode；The wireless power line
Circle array includes several energy radio receivers, the electric energy output end correspondence connection one of each energy radio receiver
Multi-energy conversion type DC voltage-stabilizing system；
Wherein, described each multi-energy conversion type DC voltage-stabilizing system includes magnetisable magnetic pole, the Hard Magnetic prepared with soft iron material
Ferrum, multi-layer piezoelectric energy-storage system and energy-storage capacitor；The magnetisable magnetic pole, rigid magnet, multi-layer piezoelectric energy storage system set successively
Put in energy radio receiver side, and arrange with the power coil concentric shafts of radio receiver；The rigid magnet is close to
The piezoelectric patches of multi-layer piezoelectric energy-storage system, the electric energy output end of multi-layer piezoelectric energy-storage system connect the input of the energy-storage capacitor
End, the outfan of the energy-storage capacitor connect a load node in the multi load array；
The magnetisable magnetic pole is I-shaped structure, and its main body is column structure, and the area of a circle of column structure both ends of the surface is to divide
Wei 1.5 times of cylindrical cross section；Described each multi-energy conversion type DC voltage-stabilizing system also includes that voltage acquisition feeds back mould
Block, the voltage collection feedback module be used for gather multi-layer piezoelectric energy-storage system output voltage size and with load node required voltage
After comparing, feedback control signal is to the tunable high-frequency power-supply system.
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| CN201510191946.5A CN104779716B (en) | 2015-04-21 | 2015-04-21 | Low-power multi-load wireless powered adaptive DC voltage stabilizing system |
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| CN201510191946.5A CN104779716B (en) | 2015-04-21 | 2015-04-21 | Low-power multi-load wireless powered adaptive DC voltage stabilizing system |
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| CN104779716B true CN104779716B (en) | 2017-05-03 |
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| KR102513790B1 (en) * | 2015-09-09 | 2023-03-27 | 삼성전자주식회사 | Method and apparatus for transmitting a wireless power |
| CN110769549B (en) * | 2015-11-06 | 2021-08-13 | 南京矽力微电子技术有限公司 | Wireless LED driving system |
| CN106112212A (en) * | 2016-07-13 | 2016-11-16 | 苏州新逸喆电子科技有限公司 | A kind of push current control module for radio welding machine |
| CN109995121B (en) * | 2019-05-05 | 2023-11-28 | 中国科学技术大学 | Power optimized many-to-many wireless charging device and control method |
| CN111541735A (en) * | 2020-03-12 | 2020-08-14 | 国网河北省电力有限公司雄安新区供电公司 | Direct-current self-adaptive port Internet of things system and control method thereof |
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| CN102043136B (en) * | 2010-12-08 | 2013-07-24 | 中国科学院宁波材料技术与工程研究所 | Magnetic sensor |
| KR101171938B1 (en) * | 2010-12-30 | 2012-08-07 | 전자부품연구원 | Multi-node wireless power transmission system and charging method therof using magnetic resonance induction |
| US8222898B1 (en) * | 2011-04-15 | 2012-07-17 | The United States Of America As Represented By The Secretary Of The Army | Method and apparatus for utilizing magnetic field modulation to increase the operating frequency of sensors |
| CN202334327U (en) * | 2011-11-17 | 2012-07-11 | 东南大学 | High frequency power source system for wireless power transmission device |
| CN102520372B (en) * | 2011-12-19 | 2014-04-23 | 中国科学院宁波材料技术与工程研究所 | Multi-coupling magnetic sensor |
| CN102868235B (en) * | 2012-08-31 | 2015-01-07 | 中国科学院电工研究所 | Radio energy transmission system and method |
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