CN103346626B - The multi-load wireless energy transform device of secondary end electric capacity frequency-selecting - Google Patents
The multi-load wireless energy transform device of secondary end electric capacity frequency-selecting Download PDFInfo
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- CN103346626B CN103346626B CN201310329350.8A CN201310329350A CN103346626B CN 103346626 B CN103346626 B CN 103346626B CN 201310329350 A CN201310329350 A CN 201310329350A CN 103346626 B CN103346626 B CN 103346626B
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Abstract
The multi-load wireless energy transform device of secondary end electric capacity frequency-selecting, belongs to wireless energy transfer field, and the present invention is that the existing fixed structure of solution can only optionally to the problem of specifying the load needing charging to charge.The present invention includes energy emitting device and N number of energy acceptance device, the electric signal input end of energy emitting device is for connecting externally fed power supply, the electrical signal of N number of energy acceptance device connects the electric signal input end of N number of load respectively, and energy emitting device and N number of energy acceptance device are by coupled modes wireless connections; Energy emitting device comprises transmitting terminal converter and wireless energy transmission circuit, each energy acceptance device comprises wireless energy receiver module and receiving terminal converter, wireless energy receiver module comprises capacitive means and inductance device, capacitive means comprises branch selector and capacitor control circuit, and capacitor control circuit comprises N bar capacitive branch.The present invention is used for the load charging system of monoergic transmitting terminal and multi-energy receiving terminal.
Description
Technical field
The present invention relates to the multi-load wireless energy transform device of a kind of pair end electric capacity frequency-selecting, belong to wireless energy transfer field.
Background technology
Dangerous, the easy problem such as aging, not convenient that wireless energy transfer overcomes that the charging of traditional wire plug-in brings.Wireless energy transfer has extensive use, and as at charging batteries of electric automobile, household electrical appliances charge, and the application in the fields such as intelligent carrier substantially increases automation and intelligentification level.
Along with the development of wireless energy transmission technology, multi-load wireless energy transfer system, namely monoergic transmitting terminal and multi-energy receiving terminal system can meet the demand of charging to multiple load, but, according to resonance principle, when energy transmitting terminal and energy acceptance terminal circuit are fixed, resonance frequency is fixed thereupon, and what how to realize the structure selectivity fixed is a problem demanding prompt solution to specifying the load needing charging to charge.
Therefore, be necessary to provide a kind of system and method for improvement to solve above-mentioned technical problem.
Summary of the invention
The present invention seeks to optionally to the problem of specifying the load charging needing charging, the multi-load wireless energy transform device of a kind of pair end electric capacity frequency-selecting to be provided to solve existing fixed structure.
The multi-load wireless energy transform device of pair end electric capacity of the present invention frequency-selecting, it comprises energy emitting device and N number of energy acceptance device, the electric signal input end of energy emitting device is for connecting externally fed power supply, the electrical signal of N number of energy acceptance device connects the electric signal input end of N number of load respectively, and energy emitting device and N number of energy acceptance device are by coupled modes wireless connections;
Described energy emitting device comprises transmitting terminal converter and wireless energy transmission circuit, the electric signal input end of transmitting terminal converter is for connecting externally fed power supply, and the electrical signal of transmitting terminal converter connects the electric signal input end of wireless energy transmission circuit;
Described each energy acceptance device comprises wireless energy receiver module and receiving terminal converter, the electrical signal of wireless energy receiver module connects the electric signal input end of receiving terminal converter, and the electrical signal of receiving terminal converter connects the electric signal input end of load;
Described wireless energy receiver module comprises capacitive means and inductance device, and capacitive means and inductance device are connected on the electrical signal of wireless energy receiver module;
Described capacitive means comprises branch selector and capacitor control circuit, and branch selector and capacitor control circuit are connected in series on the electrical signal of capacitive means, and described capacitor control circuit comprises N bar capacitive branch, and described N bar capacitive branch is in parallel.
The multi-load wireless energy transform device of pair end electric capacity of the present invention frequency-selecting, it comprises energy emitting device and N number of energy acceptance device, the electric signal input end of energy emitting device is for connecting externally fed power supply, the electrical signal of N number of energy acceptance device connects the electric signal input end of N number of load respectively, and energy emitting device and N number of energy acceptance device are by coupled modes wireless connections;
Described energy emitting device comprises transmitting terminal converter and wireless energy transmission circuit, the electric signal input end of transmitting terminal converter is for connecting externally fed power supply, and the electrical signal of transmitting terminal converter connects the electric signal input end of wireless energy transmission circuit;
Described each energy acceptance device comprises wireless energy receiver module and receiving terminal converter, the electrical signal of wireless energy receiver module connects the electric signal input end of receiving terminal converter, and the electrical signal of receiving terminal converter connects the electric signal input end of load;
Described wireless energy receiver module comprises capacitive means and inductance device, and capacitive means and inductance device are connected on the electrical signal of wireless energy receiver module;
Described capacitive means comprises N bar capacitive branch, and N bar capacitive branch is connected in parallel on the electric signal input end of capacitive means, and every bar capacitive branch comprises a switch and multiple electric capacity, described switch and capacitances in series.
Frequency-selecting charging method, compared with traditional wireless energy transfer system, has joined in multi-load charging device by the multi-load wireless energy transform device of pair end electric capacity of the present invention frequency-selecting.By regulating the receiving terminal resonance frequency of wireless energy receiving terminal, namely the capacitance size of capacitive means changes receiving terminal resonance frequency, to regulate transmitting terminal resonance frequency roughly equal with the required receiving terminal resonance frequency corresponding by the load of charging, thus realize charging to required load.Further, the operating frequency of the switching signal being supplied to transmitting terminal converter is selected according to receiving terminal resonance frequency, to realize efficient charging.The multi-load wireless energy transform device alternative of this pair end electric capacity frequency-selecting efficiently charges to required charging load.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the multi-load wireless energy transform device of pair end electric capacity of the present invention frequency-selecting;
Fig. 2 is the capacitive means electrical block diagram of energy emitting device of the present invention;
Fig. 3 is the another kind of electrical block diagram of the multi-load wireless energy transform device of pair end electric capacity of the present invention frequency-selecting.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1 and Fig. 2, the multi-load wireless energy transform device of secondary end electric capacity frequency-selecting described in present embodiment, it comprises energy emitting device 1 and N number of energy acceptance device 2, the electric signal input end of energy emitting device 1 is for connecting externally fed power supply 3, the electrical signal of N number of energy acceptance device 2 connects the electric signal input end of N number of load 4 respectively, and energy emitting device 1 and N number of energy acceptance device 2 are by coupled modes wireless connections;
Described energy emitting device 1 comprises transmitting terminal converter 11 and wireless energy transmission circuit 12, the electric signal input end of transmitting terminal converter 11 is for connecting externally fed power supply 3, and the electrical signal of transmitting terminal converter 11 connects the electric signal input end of wireless energy transmission circuit 12;
Described each energy acceptance device 2 comprises wireless energy receiver module 21 and receiving terminal converter 22, the electrical signal of wireless energy receiver module 21 connects the electric signal input end of receiving terminal converter 22, and the electrical signal of receiving terminal converter 22 connects the electric signal input end of load 4;
Described wireless energy receiver module 21 comprises capacitive means 211 and inductance device 212, and capacitive means 211 and inductance device 212 are connected on the electrical signal of wireless energy receiver module 21;
Described capacitive means 211 comprises branch selector 2111 and capacitor control circuit 2112, branch selector 2111 and capacitor control circuit 2112 are connected in series on the electrical signal of capacitive means 211, described capacitor control circuit 2112 comprises N bar capacitive branch, and described N bar capacitive branch is in parallel.
In present embodiment, different capacitive branch is selected to change the capacitance size of capacitive means 211 by branch selector 2111, and then changing the resonance frequency of energy acceptance device 2, the resonance frequency of the energy acceptance device 2 making the resonance frequency of energy emitting device 1 corresponding with load 4 is equal.
In present embodiment, transmitting terminal converter 11 converts alternating current to for the electric energy provided by externally fed power supply 3.Described energy emitting device 1 converts magnetic energy to for the electric energy provided by externally fed power supply 3, and this magnetic energy can transmit in air dielectric.Described energy acceptance device 2 for converting the magnetic energy of wireless receiving to electric energy, electric energy needed for the corresponding load 4 of this electric energy.
Embodiment two: present embodiment is described below in conjunction with Fig. 2, present embodiment is described further execution mode one, and described branch selector 2111 is a single pole multiple throw.
In present embodiment, described single pole multiple throw selects the mode of different capacitive branch to be: control the conducting of single pole multiple throw or turn off the capacitive branch selecting to connect into energy acceptance device 2.
Embodiment three: present embodiment is described below in conjunction with Fig. 1 and Fig. 3, the multi-load wireless energy transform device of secondary end electric capacity frequency-selecting described in present embodiment, it comprises energy emitting device 1 and N number of energy acceptance device 2, the electric signal input end of energy emitting device 1 is for connecting externally fed power supply 3, the electrical signal of N number of energy acceptance device 2 connects the electric signal input end of N number of load 4 respectively, and energy emitting device 1 and N number of energy acceptance device 2 are by coupled modes wireless connections;
Described energy emitting device 1 comprises transmitting terminal converter 11 and wireless energy transmission circuit 12, the electric signal input end of transmitting terminal converter 11 is for connecting externally fed power supply 3, and the electrical signal of transmitting terminal converter 11 connects the electric signal input end of wireless energy transmission circuit 12;
Described each energy acceptance device 2 comprises wireless energy receiver module 21 and receiving terminal converter 22, the electrical signal of wireless energy receiver module 21 connects the electric signal input end of receiving terminal converter 22, and the electrical signal of receiving terminal converter 22 connects the electric signal input end of load 4;
Described wireless energy receiver module 21 comprises capacitive means 211 and inductance device 212, and capacitive means 211 and inductance device 212 are connected on the electrical signal of wireless energy receiver module 21;
Described capacitive means 211 comprises N bar capacitive branch, and N bar capacitive branch is connected in parallel on the electric signal input end of capacitive means 211, and every bar capacitive branch comprises a switch 2113 and multiple electric capacity, described switch 2113 and capacitances in series.
In present embodiment, different capacitive branch is selected to change the capacitance size of capacitive means 211 by the shutoff of switch 2113, and then changing the resonance frequency of energy acceptance device 2, the resonance frequency of the energy acceptance device 2 making the resonance frequency of energy emitting device 1 corresponding with load 4 is equal.
Embodiment four: present embodiment is described below in conjunction with Fig. 3, present embodiment is described further execution mode three, and described switch 2113 is a single-pole single-throw switch (SPST).
Embodiment five: present embodiment is described below in conjunction with Fig. 2 and Fig. 3, present embodiment is described further execution mode one or execution mode three, and every bar capacitive branch of described N bar capacitive branch comprises one or more capacitances in series.
The directed charging principle of frequency-selecting is: receiving terminal resonance frequency corresponding to each load comprises two frequencies: public frequency and independent frequency, and transmitting terminal resonance frequency comprises multiple frequency: multiple independent frequency that multiple load is corresponding and public frequency; Receiving terminal public frequency is identical with transmitting terminal public frequency.
When multiple load needs to charge simultaneously, the resonance frequency regulating transmitting terminal is public frequency, and the resonance frequency regulating receiving terminal is public frequency.
When a load needs charging, transmitting terminal resonance frequency is regulated to be that this need, by independent frequency corresponding to charging load, regulate receiving terminal resonance frequency to be independent frequency.
The multi-load wireless energy transform device of pair end electric capacity of the present invention frequency-selecting is for multi-load wireless energy transfer system, i.e. monoergic transmitting terminal, multi-energy receiving terminal system, realizes the process to needing the load of charging to charge by the resonance frequency changing energy acceptance end.Essence is the change being realized resonance frequency by the size of change receiving terminal electric capacity.This technology can reduce the copper loss of resonant circuit to improve utilization rate of electrical, only have needs in running order by the receiving terminal circuit of the load end charged, the receiving terminal circuit of all the other load ends does not work, thus the directed flow (from energy transmitting terminal to needs by the energy acceptance end that the load of charging is corresponding) of energy can be realized, and then raising capacity usage ratio, improve system effectiveness.
Claims (5)
1. the multi-load wireless energy transform device of secondary end electric capacity frequency-selecting, it is characterized in that, it comprises energy emitting device (1) and N number of energy acceptance device (2), the electric signal input end of energy emitting device (1) is for connecting externally fed power supply (3), the electrical signal of N number of energy acceptance device (2) connects the electric signal input end of N number of load (4) respectively, and energy emitting device (1) and N number of energy acceptance device (2) are by coupled modes wireless connections;
Described energy emitting device (1) comprises transmitting terminal converter (11) and wireless energy transmission circuit (12), the electric signal input end of transmitting terminal converter (11) is for connecting externally fed power supply (3), and the electrical signal of transmitting terminal converter (11) connects the electric signal input end of wireless energy transmission circuit (12);
Described each energy acceptance device (2) comprises wireless energy receiver module (21) and receiving terminal converter (22), the electrical signal of wireless energy receiver module (21) connects the electric signal input end of receiving terminal converter (22), and the electrical signal of receiving terminal converter (22) connects the electric signal input end of load (4);
Described wireless energy receiver module (21) comprises capacitive means (211) and inductance device (212), and capacitive means (211) and inductance device (212) are connected on the electrical signal of wireless energy receiver module (21);
Described capacitive means (211) comprises branch selector (2111) and capacitor control circuit (2112), branch selector (2111) and capacitor control circuit (2112) are connected in series on the electrical signal of capacitive means (211), described capacitor control circuit (2112) comprises N bar capacitive branch, and described N bar capacitive branch is in parallel;
This multi-load wireless energy transform device adopts the method for frequency-selecting orientation to carry out wireless energy transfer, the resonance frequency of the receiving terminal that each load (4) is corresponding comprises public frequency and independent frequency, the resonance frequency of transmitting terminal comprises N number of independent frequency of public frequency and N number of load (4) correspondence, and the public frequency of receiving terminal is identical with the public frequency of transmitting terminal; When carrying out wireless energy transfer to multiple load (4) simultaneously, the resonance frequency regulating transmitting terminal and receiving terminal is public frequency; When carrying out wireless energy transfer to a load (4), the resonance frequency of adjustment transmitting terminal and receiving terminal is the independent frequency of this load (4) correspondence.
2. the multi-load wireless energy transform device of secondary end electric capacity frequency-selecting according to claim 1, it is characterized in that, described branch selector (2111) is a single pole multiple throw.
3. the multi-load wireless energy transform device of secondary end electric capacity frequency-selecting, it is characterized in that, it comprises energy emitting device (1) and N number of energy acceptance device (2), the electric signal input end of energy emitting device (1) is for connecting externally fed power supply (3), the electrical signal of N number of energy acceptance device (2) connects the electric signal input end of N number of load (4) respectively, and energy emitting device (1) and N number of energy acceptance device (2) are by coupled modes wireless connections;
Described energy emitting device (1) comprises transmitting terminal converter (11) and wireless energy transmission circuit (12), the electric signal input end of transmitting terminal converter (11) is for connecting externally fed power supply (3), and the electrical signal of transmitting terminal converter (11) connects the electric signal input end of wireless energy transmission circuit (12);
Described each energy acceptance device (2) comprises wireless energy receiver module (21) and receiving terminal converter (22), the electrical signal of wireless energy receiver module (21) connects the electric signal input end of receiving terminal converter (22), and the electrical signal of receiving terminal converter (22) connects the electric signal input end of load (4);
Described wireless energy receiver module (21) comprises capacitive means (211) and inductance device (212), and capacitive means (211) and inductance device (212) are connected on the electrical signal of wireless energy receiver module (21);
Described capacitive means (211) comprises N bar capacitive branch, N bar capacitive branch is connected in parallel on the electric signal input end of capacitive means (211), every bar capacitive branch comprises a switch (2113) and multiple electric capacity, described switch (2113) and capacitances in series;
This multi-load wireless energy transform device adopts the method for frequency-selecting orientation to carry out wireless energy transfer, the resonance frequency of the receiving terminal that each load (4) is corresponding comprises public frequency and independent frequency, the resonance frequency of transmitting terminal comprises N number of independent frequency of public frequency and N number of load (4) correspondence, and the public frequency of receiving terminal is identical with the public frequency of transmitting terminal; When carrying out wireless energy transfer to multiple load (4) simultaneously, the resonance frequency regulating transmitting terminal and receiving terminal is public frequency; When carrying out wireless energy transfer to a load (4), the resonance frequency of adjustment transmitting terminal and receiving terminal is the independent frequency of this load (4) correspondence.
4. the multi-load wireless energy transform device of secondary end electric capacity frequency-selecting according to claim 3, it is characterized in that, described switch (2113) is a single-pole single-throw switch (SPST).
5. the multi-load wireless energy transform device of secondary end electric capacity frequency-selecting according to claim 1 or 3, it is characterized in that, every bar capacitive branch of described N bar capacitive branch comprises one or more capacitances in series.
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