CN104348263A - Radio energy transmission method and device - Google Patents
Radio energy transmission method and device Download PDFInfo
- Publication number
- CN104348263A CN104348263A CN201410605317.8A CN201410605317A CN104348263A CN 104348263 A CN104348263 A CN 104348263A CN 201410605317 A CN201410605317 A CN 201410605317A CN 104348263 A CN104348263 A CN 104348263A
- Authority
- CN
- China
- Prior art keywords
- coil
- transmitting
- current
- power
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a radio energy transmission method, which is used for a radio energy emitting end comprising a plurality of emitting coils. The transmission method comprises the following steps that the current power of a load is obtained; the power range matched with the current power is found from a plurality of preset power ranges, so the target power range is determined; the current emitting coil of the emitting end is switched into a target emitting coil in the corresponding target power range. The radio energy transmission method has the advantages that the emitting coils are correspondingly switched according to the current power of the load, so that the current emitting coil of the emitting end is matched with the current power of the load, and further, the transmission efficiency of a radio energy transmission system in the whole power section of the load is improved.
Description
Technical field
The present invention relates to radio energy field, specifically, relate to a kind of transmission method and device of radio energy.
Background technology
Current radio energy transmission system mainly comprises transmitting terminal system and receiving terminal system, when system carries out the transmission of radio energy, the high frequency magnetic field mainly excited by the primary coil of transmitting terminal causes electromagnetic induction in the secondary coil of receiving terminal, thus make secondary coil produce voltage, and then carry out the transmission of radio energy.
But, existing radio energy transmission system mainly carries out Energy Transfer by single primary coil to single secondary coil, electric energy is converted into by secondary coil received energy, and by powering to after rectifying and wave-filtering load (such as various types of electrical equipment).
That is, in existing radio energy transmission system, no matter load is at different operating state (such as holding states, normal operating conditions) under operating power how to change, transmitting terminal system all can not subtend receiving terminal system launch energy adjust, such as, now load is in holding state, power is lower, but, transmitting terminal system still carries out powerful Energy Transfer according to the power supply parameter of primary coil, but, receiving terminal now only needs low power energy, and transmitting terminal system still carries out the transmitting of energy according to powerful parameter, and this obviously can fall low-energy efficiency of transmission, that is, existing radio energy transmission system still can not realize all keeping higher energy transmission efficiency in the whole power section of load.
And for the inefficient problem of wireless power transmission in correlation technique existing for different capacity section, at present effective solution is not yet proposed.
Summary of the invention
And for the inefficient problem of wireless power transmission in correlation technique existing for different capacity section, the present invention proposes a kind of transmission method and device of radio energy, can switch accordingly transmitting coil according to the current power of load, thus the current transmitting coil of transmitting terminal and the current power of load are matched, and then improve the confession energy efficiency of radio energy transmission system in the whole power section of load.
Technical scheme of the present invention is achieved in that
According to an aspect of the present invention, provide a kind of transmission method of radio energy, for comprising the transmitting terminal of the radio energy of multiple transmitting coil.
This transmission method comprises:
Obtain the current power of load;
In multiple predetermined power bracket, search the power bracket matched with current power, thus determine target power scope;
The current transmitting coil of transmitting terminal is switched to the objective emission coil of corresponding target power scope.
Wherein, multiple transmitting coil and multiple predetermined power bracket one_to_one corresponding.
In addition, when the current transmitting coil of transmitting terminal being switched to the objective emission coil of corresponding target power scope, this transmission method comprises further:
The current power supply parameter of transmitting terminal is adjusted to the power supply parameter matched with the resonance frequency of objective emission coil, the current power of load.
In addition, before the objective emission coil current transmitting coil of transmitting terminal being switched to corresponding target power scope, this transmission method comprises further:
The resonance frequency of the resonance frequency of current transmitting coil and objective emission coil is contrasted, obtains comparing result;
When determining that the resonance frequency of current transmitting coil is different with the resonance frequency of objective emission coil according to comparing result, the current transmitting coil of transmitting terminal is switched to objective emission coil.
According to a further aspect in the invention, provide a kind of transmitting device of radio energy, for comprising the transmitting terminal of the radio energy of multiple transmitting coil.
This transmitting device comprises:
Acquisition module, for obtaining the current power of load;
Searching module, for searching the power bracket matched with current power in multiple predetermined power bracket, thus determining target power scope;
Handover module, for switching to the objective emission coil of corresponding target power scope by the current transmitting coil of transmitting terminal.
Wherein, multiple transmitting coil and multiple predetermined power bracket one_to_one corresponding.
In addition, this transmitting device comprises adjusting module further, for when the current transmitting coil of described transmitting terminal being switched to the objective emission coil of corresponding described target power scope, the current power supply parameter of described transmitting terminal is adjusted to the power supply parameter matched with the resonance frequency of described objective emission coil, the current power of described load.
In addition, this transmitting device comprises further:
Contrast module, for before the objective emission coil current transmitting coil of transmitting terminal being switched to corresponding target power scope, contrasts the resonance frequency of the resonance frequency of current transmitting coil and objective emission coil, obtains comparing result;
Handover module can be further used for when determining that the resonance frequency of current transmitting coil is different with the resonance frequency of objective emission coil according to comparing result, and the current transmitting coil of transmitting terminal is switched to objective emission coil.
The present invention is switched transmitting coil accordingly by the current power according to load, thus the current transmitting coil of transmitting terminal and the current power of load are matched, and then improves the efficiency of transmission of radio energy transmission system in the whole power section of load.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the transmission method of radio energy according to the embodiment of the present invention;
Fig. 2 is the schematic diagram of the radio energy transmission system according to the embodiment of the present invention;
Fig. 3 is the circuit diagram of the coil selection circuit of transmitting terminal according to the embodiment of the present invention;
Fig. 4 is the flow chart of the transmission method of radio energy according to the present invention one specific embodiment;
Fig. 5 is the block diagram of the transmitting device of line electric energy according to the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of protection of the invention.
According to embodiments of the invention, provide a kind of transmission method of radio energy, for comprising the transmitting terminal of the radio energy of multiple transmitting coil.
As shown in Figure 1, comprise according to the transmission method of the radio energy of the embodiment of the present invention:
Step S101, obtains the current power of load;
Step S103, searches the power bracket matched with current power, thus determines target power scope in multiple predetermined power bracket;
Step S105, switches to the objective emission coil of corresponding target power scope by the current transmitting coil of transmitting terminal.
By such scheme of the present invention, can switch accordingly transmitting coil according to the current power of load, thus the current transmitting coil of transmitting terminal and the current power of load are matched, and then improve the efficiency of transmission of radio energy transmission system in the whole power section of load.
In the above-described embodiments, the operation principle of radio energy transmission system can refer to Fig. 2, wherein, as can be seen from Figure 2, when whole system carries out work, be in the prior art by by single primary coil to secondary coil transmitting energy, then, secondary coil received energy is also converted into electric energy, and the mode of powering to load (each electric appliances) after passing through rectifying and wave-filtering realizes wireless power transmission, but as can be seen from Figure 2, in the transmission method of radio energy according to an embodiment of the invention, multiple primary coils (i.e. transmitting coil) of the multiple power bracket of corresponding load are provided with at transmitting terminal, and when carrying out wireless power transmission to load, which primary coil is used to be that its emitted energy then has the coil selection circuit of transmitting terminal to select, wherein, in one embodiment, the circuit diagram of coil selection circuit can refer to Fig. 3, the selection of the current transmitting coil of transmitting terminal so can be realized by means of the coil selection circuit shown in Fig. 3, thus select a transmitting coil matched with the current power of load to power to load, and then improve the efficiency of transmission of radio energy.
But, it should be noted that, although transmitting terminal is only provided with the primary coil of two different capacity scopes in this example, but in actual applications, the present invention does not limit for the quantity of the transmitting coil of transmitting terminal, and what technical scheme of the present invention limited is multiple operating power range that different transmitting coils may correspond to load.
Wherein, in the present embodiment, the Winding Design of two transmitting coils that transmitting terminal adopts is not identical, wherein, first transmitting coil is the more coil of winding, second transmitting coil is the less coil of winding, and, in the present embodiment, work is carried out under the operating state (such as normal operating conditions) that first transmitting coil is in high-power scope (such as 1000w ~ 1500w) in load, work is carried out under the operating state (such as holding state) that second transmitting coil is then in low power range (such as 300w ~ 800w) in load, but in actual applications, the load of receiving terminal not merely may only have two kinds of operating powers, the operating state of corresponding multiple operating power may be there is in it, so, just multiple transmitting coil corresponding with the different operating power of load can be set at transmitting terminal, namely, according to the different operating power of load to the resonant parameter of each transmitting coil (namely, winding and resonant capacitance) carry out different designs, thus the resonant parameter of multiple transmitting coil be with the different operating power of load one to one, and due to the resonant parameter of transmitting coil and resonance frequency be one to one, therefore, the resonance frequency of multiple transmitting coil and the different operating power one_to_one corresponding of load can be made in fact, thus realize the reasonable power supply of load under different operating power.
And in the above-described embodiments, be by by the different operating power of the resonance frequency of multiple transmitting coil and load one to one mode realize the power supply of load under different operating power, so in order to strengthen the flexibility of transmitting coil to load supplying, in one embodiment, also can by multiple transmitting coil of transmitting terminal and multiple predetermined power bracket one_to_one corresponding, namely, the resonance frequency of multiple transmitting coils of transmitting terminal and multiple predetermined power bracket are carried out one_to_one corresponding, so just can make a transmitting coil not only can to the load supplying under a certain operating power, also can the load under some operating power range be powered, thus improve the flexibility of transmitting coil to load supplying.
Wherein, for the plurality of predetermined power bracket, it can carry out different designs according to the different operating power of load, design is in this example then for making each operating power of load all drop within each predetermined power bracket, so when the switching of operating state is carried out in load under the operating state of different operating power, system can select the transmitting coil of the power bracket matched with the current power of load flexibly, thus both enhanced the flexibility of wireless power transmission, meet again the high efficiency of the wireless power transmission of the multiple power of load.
And in the present embodiment, as shown in Figure 4, in order to improve the power supplying efficiency to load, transmitting terminal system is when initialization, and the second transmitting coil that coil selection circuit acquiescence selects coil turn less as current transmitting coil, and sets the driving frequency of transmitting terminal according to the resonant parameter of the second transmitting coil, namely, resonance frequency, thus make the second transmitting coil under this driving frequency, carry out the transmitting of the magnetic line of force, realize the transmission of radio energy;
And in the transmitting procedure of radio energy, the problem that the transmitting coil that operating power in order to avoid load changes caused transmitting terminal does not switch in time, in the present embodiment, the current power of transmitting terminal meeting Real-time Obtaining load, concrete, transmitting terminal obtains the information of the current power of the load of the secondary circuit feedback of receiving terminal by communication module;
Then, transmitting terminal just can judge the operating state of load according to the current power of the load obtained, concrete, transmitting terminal can search the power bracket matched with current power in multiple predetermined power bracket, thus is defined as the target power scope that load carries out powering; And the current transmitting coil of transmitting terminal is switched to the objective emission coil of corresponding target power scope;
And in order to avoid the unnecessary switching of transmitting coil, namely, power bracket corresponding to current transmitting coil is situation about matching with the current operating power of load, so in one embodiment, just can before the objective emission coil current transmitting coil of transmitting terminal being switched to corresponding target power scope, judge accordingly, concrete, the resonance frequency of the resonance frequency of current transmitting coil and objective emission coil is contrasted, obtain comparing result, because, if comparing result is when to be the resonance frequency of current transmitting coil identical with the resonance frequency of objective emission coil, then show that the power supply parameter of current transmitting coil matches with the current operating power of load, without the need to carrying out the switching of transmitting coil, namely, the current operating state of load is in holding state or band carries a small-power state, so transmitting terminal will keep former operating state constant, if but determine that the resonance frequency of current transmitting coil is different with the resonance frequency of objective emission coil according to comparing result, so then show that the power supply parameter of current transmitting coil does not mate with the current operating power of load, so the current transmitting coil of transmitting terminal then can be switched to objective emission coil by system.
In addition, in another embodiment, when the current transmitting coil of transmitting terminal being switched to the objective emission coil of corresponding target power scope, this transmission method also can comprise: the current power supply parameter of transmitting terminal is adjusted to the power supply parameter matched with the resonance frequency of objective emission coil, the current power of load, thus realizes high efficiency wireless power transmission.
In the above-described embodiments, when load is in running order, system just adopts the first transmitting coil (that is, large coil) power supply; When load is in holding state, (namely system just adopts the second transmitting coil, small coil) power supply, based on the current power of load, the transmitting coil of transmitting terminal is switched accordingly, thus fully improve Wireless power transmission system in the efficiency of whole power section, especially can improve the efficiency of small-power section.
Known by describing above, the present invention can adopt different transmitting coils under the different operating state of load, thus the resonance frequency of current transmitting coil and the current operating power of load are matched, and under the state of different transmitting coil, the power supply parameter of resonance frequency to transmitting terminal based on current transmitting coil adjusts, thus achieves the high efficiency wireless power transmission to the load (mainly system band carries difference) under different operating state.
In addition, can be found out by technique scheme of the present invention, the present invention is mainly by realizing the mode of corresponding for different transmitting coils different resonance frequency carrying out high efficiency power to the load under different operating power, if so because the restriction of condition cannot realize the correct switching of transmitting coil, or user does not want to adopt the mode of switching coil to realize carrying out high efficiency power to the load under different operating power, so in one embodiment, the invention allows for a kind of resonant parameter by the current transmitting coil of adjustment (namely, coil windings and resonant capacitance) mode realize to the load under different operating power high efficiency power, concrete principle is then, because the different operating power of load and the resonance frequency of transmitting coil are one to one, and the resonance frequency of transmitting coil side and the resonant parameter of transmitting coil are one to one, therefore, the adjustment of the resonance frequency of transmitting coil only need be realized by the mode of the resonant parameter adjusting current transmitting coil, thus the resonance frequency after adjustment is mated with the current operating power of load, and then realize powering to the high efficiency of the load under different operating power.
According to embodiments of the invention, additionally provide a kind of transmitting device of radio energy, for comprising the transmitting terminal of the radio energy of multiple transmitting coil.
As shown in Figure 5, comprise according to the transmitting device of the radio energy of the embodiment of the present invention:
Acquisition module 51, for obtaining the current power of load;
Searching module 52, for searching the power bracket matched with current power in multiple predetermined power bracket, thus determining target power scope;
Handover module 53, for switching to the objective emission coil of corresponding target power scope by the current transmitting coil of transmitting terminal.
Wherein, in one embodiment, multiple transmitting coil and multiple predetermined power bracket one_to_one corresponding.
In addition, transmitting device according to the embodiment of the present invention can comprise adjusting module (not shown) further, for when the current transmitting coil of described transmitting terminal being switched to the objective emission coil of corresponding described target power scope, the current power supply parameter of described transmitting terminal is adjusted to the power supply parameter matched with the resonance frequency of described objective emission coil, the current power of described load.
In addition, comprise further according to the transmitting device of the embodiment of the present invention:
Contrast module (not shown), for before the objective emission coil current transmitting coil of transmitting terminal being switched to corresponding target power scope, the resonance frequency of the resonance frequency of current transmitting coil and objective emission coil is contrasted, obtains comparing result;
Handover module 53 can be further used for when determining that the resonance frequency of current transmitting coil is different with the resonance frequency of objective emission coil according to comparing result, and the current transmitting coil of transmitting terminal is switched to objective emission coil.
In sum, by means of technique scheme of the present invention, different operating state based on load arranges multiple corresponding transmitting coil, and carry out different designs for the power of load under different operating state to the resonant parameter of multiple transmitting coil, thus the operating state achieving different transmitting coils different from load matches; When the operating power change of load, transmitting terminal can switch current transmitting coil accordingly for the current power of load, and the current power supply parameter of transmitting terminal is adjusted to the power supply parameter matched with the resonance frequency of current transmitting coil and the current operating power of load, thus fully can improve the efficiency of transmission of Wireless power transmission system in the whole power section of load, especially can improve the efficiency of small-power section.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a transmission method for radio energy, is characterized in that, for comprising the transmitting terminal of the radio energy of multiple transmitting coil, comprising:
Obtain the current power of load;
In multiple predetermined power bracket, search the power bracket matched with described current power, thus determine target power scope;
The current transmitting coil of described transmitting terminal is switched to the objective emission coil of corresponding described target power scope.
2. transmission method according to claim 1, is characterized in that, described multiple transmitting coil and described multiple predetermined power bracket one_to_one corresponding.
3. transmission method according to claim 1, is characterized in that, when the current transmitting coil of described transmitting terminal being switched to the objective emission coil of corresponding described target power scope, described transmission method comprises further:
The current power supply parameter of described transmitting terminal is adjusted to the power supply parameter matched with the resonance frequency of described objective emission coil, the current power of described load.
4. transmission method according to claim 1, is characterized in that, before the objective emission coil current transmitting coil of described transmitting terminal being switched to corresponding described target power scope, described transmission method comprises further:
The resonance frequency of the resonance frequency of described current transmitting coil and described objective emission coil is contrasted, obtains comparing result;
When determining that the resonance frequency of described current transmitting coil is different with the resonance frequency of described objective emission coil according to described comparing result, the described current transmitting coil of described transmitting terminal is switched to described objective emission coil.
5. a transmitting device for radio energy, is characterized in that, for comprising the transmitting terminal of the radio energy of multiple transmitting coil, comprising:
Acquisition module, for obtaining the current power of load;
Searching module, for searching the power bracket matched with described current power in multiple predetermined power bracket, thus determining target power scope;
Handover module, for switching to the objective emission coil of corresponding described target power scope by the current transmitting coil of described transmitting terminal.
6. transmitting device according to claim 5, is characterized in that, described multiple transmitting coil and described multiple predetermined power bracket one_to_one corresponding.
7. transmitting device according to claim 5, it is characterized in that, described transmitting device comprises adjusting module further, for when the current transmitting coil of described transmitting terminal being switched to the objective emission coil of corresponding described target power scope, the current power supply parameter of described transmitting terminal is adjusted to the power supply parameter matched with the resonance frequency of described objective emission coil, the current power of described load.
8. transmitting device according to claim 5, is characterized in that, described transmitting device comprises further:
Contrast module, for before the objective emission coil current transmitting coil of described transmitting terminal being switched to corresponding described target power scope, the resonance frequency of the resonance frequency of described current transmitting coil and described objective emission coil is contrasted, obtains comparing result;
Described handover module is further used for, when determining that the resonance frequency of described current transmitting coil is different with the resonance frequency of described objective emission coil according to described comparing result, the described current transmitting coil of described transmitting terminal being switched to described objective emission coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410605317.8A CN104348263A (en) | 2014-10-30 | 2014-10-30 | Radio energy transmission method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410605317.8A CN104348263A (en) | 2014-10-30 | 2014-10-30 | Radio energy transmission method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104348263A true CN104348263A (en) | 2015-02-11 |
Family
ID=52503295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410605317.8A Pending CN104348263A (en) | 2014-10-30 | 2014-10-30 | Radio energy transmission method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104348263A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208206A (en) * | 2016-07-29 | 2016-12-07 | 维沃移动通信有限公司 | A kind of wireless charging method and mobile terminal |
| CN113659736A (en) * | 2021-10-20 | 2021-11-16 | 深圳英集芯科技股份有限公司 | Wireless charger and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110298297A1 (en) * | 2009-02-27 | 2011-12-08 | Koninklijke Philips Electronics N.V. | Methods, transmission devices and transmission control system for transmitting power wirelessly |
| CN103944196A (en) * | 2008-03-13 | 2014-07-23 | 捷通国际有限公司 | Inductive power supply system with multiple coil primary |
-
2014
- 2014-10-30 CN CN201410605317.8A patent/CN104348263A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944196A (en) * | 2008-03-13 | 2014-07-23 | 捷通国际有限公司 | Inductive power supply system with multiple coil primary |
| US20110298297A1 (en) * | 2009-02-27 | 2011-12-08 | Koninklijke Philips Electronics N.V. | Methods, transmission devices and transmission control system for transmitting power wirelessly |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208206A (en) * | 2016-07-29 | 2016-12-07 | 维沃移动通信有限公司 | A kind of wireless charging method and mobile terminal |
| CN106208206B (en) * | 2016-07-29 | 2019-01-29 | 维沃移动通信有限公司 | A kind of wireless charging method and mobile terminal |
| CN113659736A (en) * | 2021-10-20 | 2021-11-16 | 深圳英集芯科技股份有限公司 | Wireless charger and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5664019B2 (en) | Wireless power feeder, wireless power transmission system, and table and table lamp using the same | |
| JP5698626B2 (en) | Wireless power receiving device, wireless power feeding device, and wireless power feeding system | |
| JP5698599B2 (en) | Wireless power receiving device, wireless power feeding device, and wireless power feeding system | |
| JP5612489B2 (en) | Inductive charging system having a plurality of primary coils | |
| EP2676352B1 (en) | Apparatus and method for high efficiency variable power transmission | |
| CN103986243B (en) | A kind of Optimization Design of magnet coupled resonant type wireless electric energy transmission system | |
| EP2309620B1 (en) | Wireless power feeder and wireless power transmission system | |
| CN103141008A (en) | Wireless energy transfer device and wireless energy transfer system | |
| JP4894894B2 (en) | Wireless power supply apparatus and wireless power transmission system | |
| KR20130098958A (en) | Wireless power transmitter and wireless power receiver and method for controlling each thereof | |
| CN105391192B (en) | A kind of electric energy transmitting terminal and wireless charging device | |
| CN113508524A (en) | Voltage regulation system and method with adjustable boost and step-down regulation | |
| US10063085B2 (en) | Power supplying apparatus and wireless power transmitter | |
| CN104348263A (en) | Radio energy transmission method and device | |
| JP4915438B2 (en) | Wireless power supply apparatus and wireless power transmission system | |
| CN104218652A (en) | Wireless charging power supply OLED soft screen network electronic device | |
| US8772977B2 (en) | Wireless power feeder, wireless power transmission system, and table and table lamp using the same | |
| CN103337917A (en) | Adjustable inductor as well as wireless charging system applying adjustable inductor and control method of wireless charging system | |
| KR20140092197A (en) | wireless power transmitter and wireless power receiver and method for controlling each thereof | |
| CN103346625B (en) | Multi-load wireless energy transmission device with auxiliary terminal inductance frequency selection | |
| CN103346626B (en) | The multi-load wireless energy transform device of secondary end electric capacity frequency-selecting | |
| CN103346627B (en) | The multi-load wireless energy transform device of former end inductance frequency-selecting | |
| KR102150521B1 (en) | Wireless power transmission systme which enables to transmit and receive induced power signal and resonance power signal | |
| CN104779684A (en) | LED screen type portable computer capable of being wirelessly charged and powered | |
| KR20200104273A (en) | Wireless power transmission systme which enables to transmit and receive induced power signal and resonance power signal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150211 |
|
| WD01 | Invention patent application deemed withdrawn after publication |