CN103094996B - Wireless power transmission system and realizing method thereof - Google Patents
Wireless power transmission system and realizing method thereof Download PDFInfo
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- CN103094996B CN103094996B CN201310008281.0A CN201310008281A CN103094996B CN 103094996 B CN103094996 B CN 103094996B CN 201310008281 A CN201310008281 A CN 201310008281A CN 103094996 B CN103094996 B CN 103094996B
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Abstract
The invention provides a wireless power transmission system. The wireless power transmission system comprises a transmission end rectification filtering circuit module, a transmission end inverter circuit module, a transmitting coil, a transmission end control circuit model, a receiving coil, a receiving end rectification filtering circuit module, a loading circuit module, a receiving end control circuit module and a current sampling circuit module, wherein the current sampling circuit module is connected with two ends of the transmitting coil and used for collecting the current of the transmitting coil. The invention further provided a realizing method of the wireless power transmission system, the realizing method comprises a safe loading recognition process, simple interaction is carried out between the receiving end control circuit module and the transmitting coil, and accurate recognition of loyal loading is achieved. According to the wireless power transmission system and the realizing method of the wireless power transmission system, additional communication conditions does not need to be added, a simple and effective loading recognition function is provided, safety risks possibly caused by mistaking heating of metal object in the usage process are effectively prevented, the production cost is low, the electromagnetic pollution is low, and popularization and application are convenient.
Description
Technical field
This product relates to radio energy transmission system, particularly a kind of radio energy transmission system and its implementation with safe bearing load recognition function.
Background technology
Usually adopt electromagnetic induction principle to carry out work in wireless power transmission technology, and when receiving terminal electric appliance load needs the region close to transmitting terminal, can power normally.In order to the convenience that user uses, system can have the function of automatic load identification usually, and namely whether reflector can perception have load enter or remove working region, thus opens or close wireless power supply system.This load identification method adopts the amplitude change of the resonance current on monitoring transmitting terminal coil to carry out usually.But, when the object (as metal key, cutter etc.) with metal material is also placed into the working region of transmitting terminal, metal material can produce vortex flow in electromagnetic field environment, and the amplitude of the resonance current on transmitting terminal coil also can be caused to change, thus makes system unlatching work.This operating state can produce serious eddy heating for heating effect in metal object, causes serious potential safety hazard, therefore before system is opened automatically, must carry out the identification of safe bearing load.Traditional way, in radio energy transmission system, transmitting terminal and receiving terminal are before realizing Energy Transfer, need the process of a communication identification in advance, and transmitting terminal and receiving terminal set up communication to identify the legitimacy of load.In radio energy transmission system, under only having the prerequisite working as the operating load being confirmed to be safe, just wireless power can be carried out.In prior art, in radio energy transmission system, increase independently communication modulation and demodulation link, create extra communication channel, both the complexity of system had been added, improve the production cost of product, in turn enhance the high-frequency electric field radiation in system, add the electromagnetic pollution of radio energy transmission system generation, make this system be difficult to promote and use.
Summary of the invention
The object of the invention is to, propose a kind of radio energy transmission system and its implementation with safe bearing load recognition function, efficiently solve remained capacity system in existing wireless power transmission technology and must possess independently communication modulation and demodulation link, thus cause that production cost is too high, electromagnetic pollution too much, be difficult to the problems such as popularization.For achieving the above object, the invention provides following technical scheme:
A kind of radio energy transmission system, comprising:
One transmitting terminal current rectifying and wave filtering circuit module, for being transformed into direct current by the alternating current in electrical network;
One transmitting terminal inverter circuit module, for being transformed into high-frequency alternating current by described direct current;
One transmitting coil, can produce high-frequency alternating electromagnetic field under the excitation of high-frequency alternating current;
One transmitting terminal control circuit module, for controlling the operating state of described transmitting terminal current rectifying and wave filtering circuit module, described transmitting terminal inverter circuit module;
One receiving coil, with described transmitting coil mutual inductance, described high-frequency alternating electromagnetic field makes described receiving coil produce the high-frequency alternating current identical with the high-frequency alternating current operating frequency in described transmitting coil;
One receiving terminal current rectifying and wave filtering circuit module, for being transformed into direct current by the high-frequency alternating current in described receiving coil;
One load circuit module, for receiving described direct current and normal work;
One receiving terminal control circuit module, for controlling the operating state of described load circuit module;
Wherein, described transmitting terminal current rectifying and wave filtering circuit module is by described transmitting terminal inverter circuit model calling extremely described transmitting coil; Described load circuit module is by described receiving terminal current rectifying and wave filtering circuit model calling extremely described receiving coil; Described transmitting terminal control circuit module is connected to described transmitting terminal current rectifying and wave filtering circuit module, described transmitting terminal inverter circuit module respectively; Described receiving terminal control circuit model calling is to load circuit module.
Described radio energy transmission system also comprises an electrical current sampling circuit module, is connected to the two ends of described transmitting coil, for the electric current of transmitting coil described in real-time sampling; Described electrical current sampling circuit module is connected to described transmitting terminal control circuit module, described current information is sent to described transmitting terminal control circuit module.
Further, described transmitting coil and described receiving coil form a resonator system, electric current in described transmitting coil is the resonance current of resonator system, and its current amplitude, can the different operating state of reflected load with the power monotone variation of described load circuit module.
Further, described operating state comprises holding state, starting state and range state etc.
An implementation method for radio energy transmission system, comprises the steps:
1) described transmitting terminal control circuit module controls transmitting terminal current rectifying and wave filtering circuit module, described transmitting terminal inverter circuit module are communicated with, in described transmitting coil, produce high-frequency alternating current;
2) described transmitting coil produces high-frequency alternating electromagnetic field under described high-frequency ac electric excitation;
3) described high-frequency alternating electromagnetic field makes described receiving coil produce the high-frequency alternating current identical with the high-frequency alternating current operating frequency in described transmitting coil;
4) high-frequency alternating current in described receiving coil is transformed into direct current by described receiving terminal current rectifying and wave filtering circuit module, is receiving terminal load supplying;
5) described load circuit module receives described direct current and normal work;
In step 2) and step 3) between also comprise safe bearing load identifying, described safe bearing load testing process comprises the steps:
6) described receiving terminal control circuit module switches the load operating condition of described load circuit module continuously successively in more than one state switching cycle, makes described load circuit module produce changed power;
7) described electrical current sampling circuit module gathers the resonance current of described transmitting coil and is sent to described transmitting terminal control circuit module;
8) normalized current that described transmitting coil electric current and described transmitting terminal control circuit module preset compares by described transmitting terminal control circuit module, judges whether transmitting coil current value described in a time point in office is equal to should the described standard current value of time point; If so, step 3) is returned; If not, step 9) is performed;
9) described transmitting terminal control circuit module sends instruction and cuts off transmitting terminal current rectifying and wave filtering circuit module, transmitting terminal inverter circuit module.
Wherein, the standard current value that described transmitting terminal control circuit module presets is the alternating current value that described transmitting coil produces under the load operating condition preset.
Further, described load circuit module only has 2 kinds of load conditions, one state switching cycle comprises a holding state and a starting state, the load operating condition of described receiving terminal control circuit module load circuit module described in switching at runtime in continuous 2 ~ 3 state switching cycles, described holding state or described starting state continue 10-1000 millisecond.
Further, described load circuit module has more than 3 kinds load conditions, one state switching cycle comprises a holding state, a starting state and a range state, the load condition of described receiving terminal control circuit module load circuit module described in switching at runtime in 1 state switching cycle, described holding state, described startup open state or described range state continue 10-1000 millisecond.
The invention has the advantages that and a kind of radio energy transmission system and its implementation are provided, without the need to increasing extra communication condition, there is simple and effective remained capacity function, effectively can distinguish the legitimacy of load, can effectively prevent from heating the potential safety hazard that may cause to metal object in use procedure by mistake, production cost compared with low, electromagnetic pollution is few, easy to utilize.
Accompanying drawing explanation
Fig. 1 is the structural schematic block diagram of radio energy transmission system of the present invention;
Fig. 2 is the implementation method block diagram of radio energy transmission system of the present invention;
Fig. 3 is changed power oscillogram when load circuit module has two kinds of load conditions in the present invention;
Fig. 4 is changed power oscillogram when load circuit module has three kinds of load conditions in the present invention;
In figure, mark is as follows: 1, transmitting terminal current rectifying and wave filtering circuit module, 2, transmitting terminal inverter circuit module, 3, transmitting coil, 4, transmitting terminal control circuit module, 5, receiving coil, 6, receiving terminal current rectifying and wave filtering circuit module, 7, load circuit module, 8, receiving terminal control circuit module, 9, electrical current sampling circuit module.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing, those skilled in the art is more clearly understood and how to put into practice the present invention.Describe the present invention although should be appreciated that in conjunction with its preferred specific embodiments, these embodiments are only elaboration, instead of limit the scope of the invention.
Be illustrated in figure 1 the structural schematic block diagram of radio energy transmission system of the present invention, the radio energy transmission system in figure comprises:
One transmitting terminal current rectifying and wave filtering circuit module 1, for being transformed into direct current by the alternating current in electrical network;
One transmitting terminal inverter circuit module 2, for being transformed into high-frequency alternating current by described direct current;
One transmitting coil 3, can produce high-frequency alternating electromagnetic field under the excitation of high-frequency alternating current;
One transmitting terminal control circuit module 4, for controlling the operating state of described transmitting terminal current rectifying and wave filtering circuit module, described transmitting terminal inverter circuit module;
One receiving coil 5, with described transmitting coil mutual inductance, described high-frequency alternating electromagnetic field makes described receiving coil produce the high-frequency alternating current identical with the high-frequency alternating current operating frequency in described transmitting coil;
One receiving terminal current rectifying and wave filtering circuit module 6, for being transformed into direct current by the high-frequency alternating current in described receiving coil;
One load circuit module 7, for receiving described direct current and normal work;
One receiving terminal control circuit module 8, for controlling the operating state of described load circuit module;
Wherein, transmitting terminal current rectifying and wave filtering circuit module 1 is connected to transmitting coil 3 by transmitting terminal inverter circuit module 2; Load circuit module 7 is connected to receiving coil 5 by receiving terminal current rectifying and wave filtering circuit module 6; Transmitting terminal control circuit module 1 is connected to transmitting terminal current rectifying and wave filtering circuit module 1, transmitting terminal inverter circuit module 2 respectively; Receiving terminal control circuit module 6 is connected to load circuit module 7.
Transmitting coil 3 and receiving coil 5 form a resonator system, and the electric current in transmitting coil 3 is the resonance current of resonator system, and its current amplitude, can the different operating state of reflected load with the power monotone variation of load circuit module 7.
Described operating state comprises the range state etc. of holding state, starting state and different capacity.
Radio energy transmission system of the present invention also comprises an electrical current sampling circuit module 9, is connected to the two ends of transmitting coil 3, for gathering the current information of transmitting coil 3.Electrical current sampling circuit module 9 is connected to transmitting terminal control circuit module 4, described current information is sent to transmitting terminal control circuit module 4.
The described load operating condition preset in the startup self-inspection stage of electrical equipment, can be preset by receiving terminal control module circuit 8.When receiving terminal load 7 the above-mentioned self-inspection stage according to default rule varying duty state time, on the coil of transmitting terminal can generation rule current impulse change, the change of this regularity can be preset by the production firm of electrical equipment and check the rule encoding of safe bearing load the most, for determining whether the load that safety is legal.
If load circuit module 7(is some common electrical equipment such as) there are 2 kinds of load conditions, each state switching cycle comprises connected state and off-state, and described connected state or described off-state continue 10-1000 millisecond.The on off operating mode of receiving terminal control circuit module 6 switching at runtime load circuit module 7 in continuous 2 ~ 3 state switching cycles.
If described load circuit module has more than 3 kinds load conditions, each state switching cycle comprises (specifically having which state), each load condition continues 10-1000 millisecond, the on off operating mode of described receiving terminal control circuit module load circuit module described in switching at runtime in 1 state switching cycle.
Be illustrated in figure 2 the structural schematic block diagram of radio energy transmission system of the present invention, the implementation method of the radio energy transmission system shown in figure, comprises the steps:
1) described transmitting terminal control circuit module controls transmitting terminal current rectifying and wave filtering circuit module, described transmitting terminal inverter circuit module are communicated with, in described transmitting coil, produce high-frequency alternating current;
2) described transmitting coil produces high-frequency alternating electromagnetic field under described high-frequency ac electric excitation;
3) described high-frequency alternating electromagnetic field makes described receiving coil produce the high-frequency alternating current identical with the high-frequency alternating current operating frequency in described transmitting coil; ;
4) high-frequency alternating current in described receiving coil is transformed into direct current by described receiving terminal current rectifying and wave filtering circuit module, is receiving terminal load supplying;
5) described load circuit module receives described direct current and normal work;
In step 2) and step 3) between also comprise safe bearing load identifying, described safe bearing load identifying specifically comprises the steps:
6) described receiving terminal control circuit module switches the load operating condition of described load circuit module continuously successively in more than one state switching cycle, makes described load circuit module produce changed power;
7) described electrical current sampling circuit module gathers the resonance current of described transmitting coil and is sent to described transmitting terminal control circuit module;
8) normalized current that described transmitting coil electric current and described transmitting terminal control circuit module preset compares by described transmitting terminal control circuit module, judges whether transmitting coil current value described in a time point in office is equal to should the described standard current value of time point; If so, step 3) is returned; If not, step 9) is performed;
9) described transmitting terminal control circuit module sends instruction and cuts off transmitting terminal current rectifying and wave filtering circuit module, transmitting terminal inverter circuit module.
Wherein, the standard current value that transmitting terminal control circuit module 4 presets is the alternating current value that transmitting coil 3 produces under the load operating condition preset, specifically, in load circuit module 7 normally work, switch the load operating condition of described load circuit module successively according to time sequencing according to setting in advance, in these load operating condition processes of switching, the current value changed in transmitting coil 3 is standard current value, standard current value is corresponding to load circuit module 7, the current value of corresponding different time forms a normalized current waveform, this waveform is preset and is kept in transmitting terminal control circuit module 4.
If load circuit module 7(is some common electrical equipment such as) when there is 2 kinds of load conditions, each state switching cycle comprises a starting state (connected state) and a holding state (off-state), and described operating state or described holding state will continue 10-1000 millisecond.The on off operating mode of receiving terminal control circuit module 6 switching at runtime load circuit module 7 in continuous 2 ~ 3 state switching cycles.Curent change oscillogram when load circuit module has two kinds of load conditions as shown in Figure 3, electric current I in Fig. 3
1represent the current value of load circuit module 7 under starting state (connected state), electric current I
2represent the current value of load circuit module 7 under holding state (off-state), load circuit module 7 is herein load appliance.Load condition handoff procedure shown in Fig. 3 is equivalent to the state switching cycle of 3 shown in figure.Load circuit module 7 at work, the change of the general electric current all shown in corresponding diagram of change of load condition, and then the change of corresponding load circuit module 7 power, and metallic foreign body can not produce changed power, therefore can carry out the identification of safe bearing load according to this feature.The duration that state is often planted in load maintains 10-1000 millisecond, to reduce the impact of circuit delay on the real-time of signal sampling.
Load circuit module 7 is placed on working region, and transmitting terminal control circuit module 4 controls the magnetic field that transmitting coil 3 changes, and the receiving coil 5 being arranged in the magnetic field of this change produces alternating current, for load circuit module 7 is powered.First receiving terminal control circuit module 8 carries out the self-inspection of electrical equipment, i.e. state (as opened and closed an electric appliance load continuously) 2-3 cycle of dynamic switch load circuit module 7.When the state of load circuit module 7 changes, the electric current on transmitting coil 3 can be caused to occur pulse change, the current impulse change on transmitting coil 3 is sampled and is sent to transmitting terminal control circuit module 4 by electrical current sampling circuit module 9.Transmitting terminal control circuit module 4 can be confirmed whether according to the current impulse feature of sampling the current information Changing Pattern meeting setting, determine whether proceeding to power or proceed to the safe standby state of not carrying out delivery of electrical energy normally, judge whether the current value of a time point transmitting coil 3 in office is equal to should the described standard current value of time point, specifically, switch the load operating condition of described load circuit module successively according to time sequencing according to setting in advance, in these load operating condition processes of switching, record the current value of each the time point transmitting coil 3 in continuous time, and its (form with oscillogram) is saved in transmitting terminal control circuit module 4, in addition, in transmitting terminal control circuit module 4, (form with oscillogram) is preset with series of standards current value.Transmitting coil 3 actual current value of same for correspondence time and standard current value are compared, if the current value of transmitting coil 3 be less than preset to should the standard current value of time point, can assert to there is illegal load (as metallic foreign body) in transformable magnetic field, described transmitting terminal control circuit module sends instruction and cuts off transmitting terminal current rectifying and wave filtering circuit module, transmitting terminal inverter circuit module (stopping the safe standby state of delivery of electrical energy), improves the fail safe of system; If the current value of transmitting coil 3 be equal to preset to should the standard current value of time point, can assert there is not illegal load in transformable magnetic field, radio energy transmission system of the present invention can proceed delivery of electrical energy.
If described load circuit module has more than 3 kinds load conditions, each load condition switching cycle comprises the range state of holding state, starting state and different capacity.Each load condition continues 10-1000 millisecond, to reduce the impact of circuit delay on the real-time of signal sampling, and the on off operating mode of described receiving terminal control circuit module load circuit module described in switching at runtime in 1 state switching cycle.Be illustrated in figure 4 curent change oscillogram when load circuit module has three kinds of load conditions, now load circuit module 7 is load appliance, and the operating state shown in Fig. 4 switches only needs the state switching cycle of 1 shown in figure.In these load operating condition processes of switching, record the current value of each the time point transmitting coil 3 in continuous time, and its (form with oscillogram) is saved in transmitting terminal control circuit module 4; In addition, in transmitting terminal control circuit module 4, (form with oscillogram) is preset with series of standards current value.Transmitting coil 3 actual current value of same for correspondence time and standard current value are compared, if the current value of transmitting coil 3 be less than preset to should the standard current value of time point, can assert to there is illegal load (as metal object) in transformable magnetic field, described transmitting terminal control circuit module sends instruction and cuts off transmitting terminal current rectifying and wave filtering circuit module, transmitting terminal inverter circuit module (stopping the safe standby state of delivery of electrical energy), improves the fail safe of system; If the current value of transmitting coil 3 be equal to preset to should the standard current value of time point, can assert there is not illegal load in transformable magnetic field, radio energy transmission system of the present invention can proceed delivery of electrical energy.
The change of the general all corresponding bearing power of change of load operating condition, and metallic foreign body can not have the change of power, therefore can carry out the identification of illegal load (as metallic foreign body) according to this feature.For the electrical equipment only having two kinds of operating states, only have two kinds of load conditions, its state switches at least wants 2-3 cycle.For the electrical equipment with more than three kinds operating states, then can switch multiple operating state successively, the current pulse sequence of formation rule, the contrast of safe current signal can be completed like this in a state switching cycle, and then completing the identification of load, the self-inspection time of electrical equipment is shorter.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a radio energy transmission system, is characterized in that, comprising:
One transmitting terminal current rectifying and wave filtering circuit module, for being transformed into direct current by the alternating current in electrical network;
One transmitting terminal inverter circuit module, for being transformed into high-frequency alternating current by described direct current;
One transmitting coil, can produce high-frequency alternating electromagnetic field under the excitation of high-frequency alternating current;
One transmitting terminal control circuit module, for controlling the operating state of described transmitting terminal current rectifying and wave filtering circuit module, described transmitting terminal inverter circuit module;
One receiving coil, with described transmitting coil mutual inductance, described high-frequency alternating electromagnetic field makes described receiving coil produce the high-frequency alternating current identical with the high-frequency alternating current operating frequency in described transmitting coil;
One receiving terminal current rectifying and wave filtering circuit module, for being transformed into direct current by the high-frequency alternating current in described receiving coil;
One load circuit module, for receiving described direct current and normal work; Described load circuit module comprises electrical equipment;
One receiving terminal control circuit module, for controlling the operating state of described load circuit module;
Wherein, described transmitting terminal current rectifying and wave filtering circuit module is by described transmitting terminal inverter circuit model calling extremely described transmitting coil; Described load circuit module is by described receiving terminal current rectifying and wave filtering circuit model calling extremely described receiving coil; Described transmitting terminal control circuit module is connected to described transmitting terminal current rectifying and wave filtering circuit module, described transmitting terminal inverter circuit module respectively; Described receiving terminal control circuit model calling is to load circuit module;
Also comprise an electrical current sampling circuit module, be connected to the two ends of described transmitting coil, for the electric current of transmitting coil described in real-time sampling; Described electrical current sampling circuit module is connected to described transmitting terminal control circuit module, described electric current is sent to described transmitting terminal control circuit module;
Described transmitting coil and described receiving coil form a resonator system, electric current in described transmitting coil is the resonance current of resonator system, its current amplitude, with the power monotone variation of described load circuit module, can reflect the operating state of described load circuit module.
2. a kind of radio energy transmission system as claimed in claim 1, is characterized in that, the operating state of described load circuit module comprises holding state, starting state and range state.
3. a safe bearing load recognition methods for radio energy transmission system as claimed in claim 1, comprises the steps:
1) described transmitting terminal control circuit module controls transmitting terminal current rectifying and wave filtering circuit module, described transmitting terminal inverter circuit module are communicated with, in described transmitting coil, produce high-frequency alternating current;
2) described transmitting coil produces high-frequency alternating electromagnetic field under described high-frequency ac electric excitation;
3) described high-frequency alternating electromagnetic field makes described receiving coil produce the high-frequency alternating current identical with the high-frequency alternating current operating frequency in described transmitting coil;
4) high-frequency alternating current in described receiving coil is transformed into direct current by described receiving terminal current rectifying and wave filtering circuit module, is receiving terminal load supplying;
5) described load circuit module receives described direct current and normal work;
It is characterized in that, in step 2) and step 3) between also comprise safe bearing load testing process, described safe bearing load testing process specifically comprises the steps:
6) described receiving terminal control circuit module switches the load operating condition of described load circuit module continuously successively in more than one state switching cycle, makes described load circuit module produce changed power;
7) described electrical current sampling circuit module gathers the resonance current of described transmitting coil and is sent to described transmitting terminal control circuit module;
8) normalized current that described transmitting coil electric current and described transmitting terminal control circuit module preset compares by described transmitting terminal control circuit module, judges whether transmitting coil current value described in a time point in office is equal to should the standard current value of time point; If so, step 3) is returned; If not, step 9) is performed;
9) described transmitting terminal control circuit module sends instruction and cuts off transmitting terminal current rectifying and wave filtering circuit module, transmitting terminal inverter circuit module.
4. safe bearing load recognition methods as claimed in claim 3, it is characterized in that, the standard current value that described transmitting terminal control circuit module presets is the alternating current value that described transmitting coil produces under the load operating condition preset.
5. safe bearing load recognition methods as claimed in claim 3, it is characterized in that, described load circuit module only has 2 kinds of load operating condition, one state switching cycle comprises a holding state and a starting state, the load operating condition of described receiving terminal control circuit module load circuit module described in switching at runtime in continuous 2 ~ 3 state switching cycles, described holding state or described starting state continue 10-1000 millisecond.
6. safe bearing load recognition methods as claimed in claim 3, it is characterized in that, described load circuit module has more than 3 kinds load operating condition, one state switching cycle comprises a holding state, a starting state and a range state, the load operating condition of described receiving terminal control circuit module load circuit module described in switching at runtime in 1 state switching cycle, described holding state, described starting state or described range state continue 10-1000 millisecond.
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| CN201310008281.0A CN103094996B (en) | 2013-01-10 | 2013-01-10 | Wireless power transmission system and realizing method thereof |
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| CN201310008281.0A CN103094996B (en) | 2013-01-10 | 2013-01-10 | Wireless power transmission system and realizing method thereof |
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| CN104124780A (en) * | 2013-04-28 | 2014-10-29 | 海尔集团技术研发中心 | Method and device for identifying payload |
| CN103427500B (en) * | 2013-08-19 | 2015-04-08 | 广西电网公司电力科学研究院 | Detection device and detection method for illegal load of IPT (inductive power transfer) system |
| CN103795154B (en) * | 2013-11-22 | 2016-11-09 | 西南交通大学 | A kind of load validity decision method of induction type radio energy transmission system |
| RU2692482C2 (en) * | 2014-09-16 | 2019-06-25 | Конинклейке Филипс Н.В. | Wireless inductive power transmission |
| CN104633578A (en) * | 2015-01-27 | 2015-05-20 | 快捷达通信设备(东莞)有限公司 | Wireless charged LED lamp |
| JP6609986B2 (en) * | 2015-05-13 | 2019-11-27 | セイコーエプソン株式会社 | Control device, electronic device and non-contact power transmission system |
| DE112017002380T5 (en) * | 2016-06-06 | 2019-01-24 | Murata Manufacturing Co., Ltd. | Wireless power feed system, wireless power transmitter and wireless power receiver |
| CN106451811B (en) * | 2016-12-05 | 2023-06-20 | 青岛鲁渝能源科技有限公司 | Wireless power transmission system and method with abnormal state protection function |
| CN113038647A (en) * | 2021-03-17 | 2021-06-25 | 长春中际互频科技有限公司 | Induction heating system applied to fins based on mutual frequency principle |
| CN113708513B (en) * | 2021-10-28 | 2022-02-15 | 北京惠朗时代科技有限公司 | Wireless heating control method, transmitting terminal and wireless heating system |
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| JP3363341B2 (en) * | 1997-03-26 | 2003-01-08 | 松下電工株式会社 | Non-contact power transmission device |
| CN101160703B (en) * | 2005-04-12 | 2011-06-15 | 先进装配系统有限责任两合公司 | Primary part for a contactless current supply device and current supply device |
| CN100375370C (en) * | 2006-03-03 | 2008-03-12 | 重庆大学 | Power source board able to be controlled in zone |
| CN102130477A (en) * | 2010-01-14 | 2011-07-20 | 昆盈企业股份有限公司 | Wireless charging device and charging method thereof |
| CN202327780U (en) * | 2011-09-05 | 2012-07-11 | 李鹏 | Desk lamp for supplying wireless charging function to electronic product |
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