CN206272347U - Radio energy transmission system with abnormal state protection function - Google Patents
Radio energy transmission system with abnormal state protection function Download PDFInfo
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- CN206272347U CN206272347U CN201621321788.7U CN201621321788U CN206272347U CN 206272347 U CN206272347 U CN 206272347U CN 201621321788 U CN201621321788 U CN 201621321788U CN 206272347 U CN206272347 U CN 206272347U
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Abstract
Radio energy transmission system with abnormal state protection function; the output end connection transmitting terminal rectifying and wave-filtering voltage sampling circuit of its transmitting terminal current rectifying and wave filtering circuit; the output end connection transmitting terminal coil current sample circuit of inverter circuit, the sampled signal of transmitting terminal rectifying and wave-filtering voltage and the sampled signal of transmitting end-coil input current are delivered to transmitting terminal MCU；The output end connection receiving terminal rectifying and wave-filtering voltage sampling circuit of receiving terminal current rectifying and wave filtering circuit, the output end connection load input current sampling apparatus of mu balanced circuit, the sampled signal and load input current sampled signal of receiving terminal current rectifying and wave filtering circuit output voltage are delivered to receiving terminal MCU.Wireless power transmission method, according to current value and magnitude of voltage that above-mentioned sample circuit is gathered, calculates relative efficiency, and it is compared with threshold value, and whether the relation according to relative efficiency in time period T and its threshold value judges system in abnormality.
Description
Technical field
The invention belongs to wireless charging technical field, it is related to a kind of radio energy transmission system, specifically, be related to one kind
Radio energy transmission system with abnormal state protection function.
Background technology
Wireless power transmission is a kind of technology that electric energy transmission is carried out by external electromagnetic field coupling, and its major advantage is
(1) it is easy to use, it is not necessary to plug；(2) safety coefficient is high, because transmitting terminal and receiving terminal are connected without direct circuit, will not produce
Raw electric spark；(3) application field is wide, can be used under the bad working environments such as inflammable and explosive；Energy transmission can be carried out in water,
In the submerged applications such as marine settings.
When radio energy transmission system is in abnormal operating state, such as it is inclined to there is position in transmitting terminal and receiving terminal
When shifting, device damage, system effectiveness can be less than normal operating conditions, at this moment will result in energy dissipation and can cause
System heat generation can then destroy the stability of system so as to further reduce stresses of parts and systematic function when situation is serious.This is straight
Connecing causes product to there is potential failure risk.In order to improve the stability and security of system, it is necessary to effectively solve above-mentioned
Problem.
Existing radio energy Transmission system does not have abnormal state protection function generally.
The patent of Publication No. CN104868610A discloses a kind of wireless charging system and method, specific open：Wirelessly
Charging receiver module includes the voltage sampling element for being sampled to voltage after rectifying and voltage-stabilizing, is changed in dynamic load
When, the sampled value of voltage sampling element will react the change of dynamic load, pass it to the MCU of wireless charging receiving terminal, with
Just MCU is made a response to the exception of dynamic load, and output voltage is controlled.This method only accounts for wireless charging reception
The abnormal output at end.
Under abnormality, wireless charging receiving terminal and radio energy transmitting terminal can make a response to abnormality, research
A kind of radio energy transmission system and method for considering radio energy receiving terminal and radio energy transmitting terminal abnormality,
Diagnosis can be more accurately made to abnormality.
The content of the invention
Can Accurate Diagnosis radio energy transmission system it is an object of the invention to provide one kind according to the deficiencies in the prior art
Abnormality, the radio energy transmission system with abnormality diagnosis and defencive function.
To realize object above, the present invention provides following technical scheme：Radio energy with abnormal state protection function
Transmission system, including wireless transmitting terminals and wireless receiving end, wireless transmitting terminals include transmitting terminal current rectifying and wave filtering circuit, transmitting terminal
MCU, transmitting end-coil and wireless communication receiver module, the output end of transmitting terminal current rectifying and wave filtering circuit is through inverter circuit and transmitting terminal
Coil connects；Wireless receiving end includes receiving the transmitting of end-coil, receiving terminal current rectifying and wave filtering circuit, receiving terminal MCU and radio communication
Module, the received end current rectifying and wave filtering circuit of output and mu balanced circuit for receiving end-coil connects load；Radio communication transmitter module is obtained
Take the signal of receiving terminal MCU and carry out signal transmission with wireless communication receiver intermodule, wireless communication receiver module is obtained
Signal value be delivered to transmitting terminal MCU；
The output end of transmitting terminal current rectifying and wave filtering circuit is connected to gather the hair of transmitting terminal current rectifying and wave filtering circuit output voltage
End rectifying and wave-filtering voltage sampling circuit is penetrated, the output end of inverter circuit is connected to the transmitting of collection transmitting end-coil input current
End-coil current sampling circuit, the sampled signal of transmitting terminal rectifying and wave-filtering voltage and the sampled signal of transmitting end-coil input current
It is delivered to transmitting terminal MCU；It is defeated that the output end of receiving terminal current rectifying and wave filtering circuit is connected to collection receiving terminal current rectifying and wave filtering circuit
Go out voltage receiving terminal rectifying and wave-filtering voltage sampling circuit, the output end of mu balanced circuit is connected to the negative of collection load input current
Input current sampling apparatus is carried, the sampled signal and load input current sampled signal of receiving end current rectifying and wave filtering circuit output voltage are equal
It is delivered to receiving terminal MCU.
Preferably：Penetrating end rectifying and wave-filtering voltage sampling circuit includes the resistance R3 and resistance R4 of series connection, the of resistance R3
One end connects the output end of transmitting terminal current rectifying and wave filtering circuit, the second end ground connection of resistance R4, second end of resistance R3 and resistance R4's
First end is interconnected and connects the in-phase input end of voltage follower U1, the output end of voltage follower U1 and second end of resistance R4
Indirect electric capacity C1, the output end of voltage follower U1 connects with transmitting terminal MCU, by transmitting terminal rectifying and wave-filtering voltage sampling signal
Transmitting terminal MCU is delivered to, the output end of voltage follower U1 also connects with its reverse input end；
Transmitting terminal coil current sample circuit includes resistance R5, R6, R7 and R8, first end and the inverter circuit of resistance R5
Output end connects, the second end ground connection, and it is parallel with electric capacity C3；The first end of resistance R6 is connected with the first end of resistance R5, the
Two two branch roads of termination a, branch road is grounded through electric capacity C2, and another branch road connects the reverse input end of voltage follower U2；Resistance
The first end ground connection of R7, its two branch road of the second termination a, branch road connects the in-phase input end of voltage follower U2, another branch
The first end of road connecting resistance R8；The second segment of resistance R8 connects the output end of voltage follower U2, and voltage follower U2 output
End is also connected to the in-phase input end of voltage follower U3, and the output of voltage follower U3 terminates two branch roads, a branch road and electricity
The reverse input end of pressure follower U3 is connected, and another branch road is connected to transmitting terminal MCU, and transmitting terminal coil current sampled signal is passed
It is handed to transmitting terminal MCU；
Receiving terminal rectifying and wave-filtering voltage sampling circuit includes the resistance R1 and resistance R2 of series connection, and first termination of resistance R1 is steady
The output end of volt circuit；The second end ground connection of resistance R2, second end of resistance R1 and the first end of resistance R2 are interconnected and connect voltage
The in-phase input end of follower U4, the output of voltage follower U4 terminates two branch roads, and a branch road is with voltage follower U4's
Reverse input end connects, and another branch road connects with receiving terminal MCU, and receiving terminal rectifying and wave-filtering voltage sampling signal is delivered into hair
Penetrate end MCU.
Preferably：Load input current sampling apparatus uses current sample chip, and the output end of mu balanced circuit is through electric current
Sampling A/D chip is connected with load, and the output end of current sample chip connects with receiving terminal MCU, will load input current sampled signal
It is transferred to receiving terminal MCU.
Beneficial effects of the present invention are：
The invention provides a kind of radio energy transmission system with abnormal state protection function.With conventional wireless electric energy
Unlike Transmission system, the system configuration transmitting terminal rectifying and wave-filtering voltage sampling circuit, transmitting terminal coil current sampling electricity
Road, receiving terminal rectifying and wave-filtering voltage sampling circuit and load input current sampling apparatus, according to above-mentioned sample circuit or sampling cartridge
The current value and magnitude of voltage of collection are put, whether analysis radio energy transmission system is in abnormality.
Brief description of the drawings
Fig. 1 is radio energy transmission system structural representation.
Fig. 2 is transmitting terminal rectifying and wave-filtering voltage sampling circuit and transmitting terminal coil current sample circuit structural representation.
Fig. 3 is receiving terminal current rectifying and wave filtering circuit and load input current sampling apparatus structural representation.
Fig. 4 is radio energy transmission system workflow diagram.
Specific embodiment
Specific embodiment of the invention is clearly fully described by below with reference to accompanying drawing.Obviously, it is embodied
Embodiment described by mode is only a part of embodiment of the invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made,
Belong to protection scope of the present invention.
As shown in figure 1, the radio with abnormal state protection function. with conventional wireless electric energy transmission system similarly
Energy Transmission system, including wireless transmitting terminals and wireless receiving end, wireless transmitting terminals include transmitting terminal current rectifying and wave filtering circuit, transmitting terminal
MCU, transmitting end-coil and wireless communication receiver module, the output end of transmitting terminal current rectifying and wave filtering circuit is through inverter circuit and transmitting terminal
Coil connects；Wireless receiving end includes receiving the transmitting of end-coil, receiving terminal current rectifying and wave filtering circuit, receiving terminal MCU and radio communication
Module, the received end current rectifying and wave filtering circuit of output and mu balanced circuit for receiving end-coil connects load；Radio communication transmitter module is obtained
Take the signal of receiving terminal MCU and carry out signal transmission with wireless communication receiver intermodule, wireless communication receiver module is obtained
Signal value be delivered to transmitting terminal MCU.Transmitting terminal coil configuration has proximity sensor, and receiving terminal coil configuration has can be approached
The inductor of formula sensor senses.The perceptual signal of proximity sensor feeds back to transmitting terminal MCU.
When system works, alternating current into transmitting terminal current rectifying and wave filtering circuit is taken from power network, industrial-frequency alternating current is changed into direct current
Electricity.Then, transmitting terminal MCU control circuit produces PWM drive signal, makes direct current by converting high-frequency ac after inverter circuit
Electricity, for encouraging transmitting end-coil.End-coil is received by magnetic coupling interrogation energy, and by receiving terminal filtering high-frequency rectifier
Circuit, then export direct current.The direct current is by voltage required for DC/DC mu balanced circuit output loading equipment.When load change,
Device parameter shift, temperature rise can all influence the stability that whole system works when changing.In order to realize radio energy transmission system
Stable operation, increase radio-frequency communication module in wireless receiving end and wireless transmitting terminals, the status information at wireless receiving end is returned
Back to wireless transmitting terminals, the closed-loop control of whole system is realized.In this process, the MCU of the receiving terminal receiving terminals that can sample are whole
Stream voltage signal, and by being attached thereto the wireless communication receiver module that radio communication transmitter module is sent to transmitting end equipment.
The outlet side commutating voltage value that transmitting terminal MCU can be returned according to the wireless communication receiver module being attached thereto, regulation PWM frequency,
Dutycycle or phase export commutating voltage to stablize.According to proximity sensor feed back signal come discriminate whether receive end-coil
Into system work area domain.
It is different from traditional radio energy transmission system to realize detection of the radio energy transmission system to abnormality
It is that radio energy transmission system further designs following structure to be.
The output end of transmitting terminal current rectifying and wave filtering circuit is connected to gather the hair of transmitting terminal current rectifying and wave filtering circuit output voltage
End rectifying and wave-filtering voltage sampling circuit is penetrated, the output end of inverter circuit is connected to the transmitting of collection transmitting end-coil input current
End-coil current sampling circuit, the sampled signal of transmitting terminal rectifying and wave-filtering voltage and the sampled signal of transmitting end-coil input current
It is delivered to transmitting terminal MCU；It is defeated that the output end of receiving terminal current rectifying and wave filtering circuit is connected to collection receiving terminal current rectifying and wave filtering circuit
Go out voltage receiving terminal rectifying and wave-filtering voltage sampling circuit, the output end of mu balanced circuit is connected to the negative of collection load input current
Carry input current sampling apparatus, the sampled signal and load input current sampled signal of receiving terminal current rectifying and wave filtering circuit output voltage
It is delivered to receiving terminal MCU.
Further, as shown in Fig. 2 transmitting terminal rectifying and wave-filtering voltage sampling circuit includes the resistance R3 and resistance R4 of series connection,
The first end of resistance R3 connects the output end of transmitting terminal current rectifying and wave filtering circuit, the second end ground connection of resistance R4, second end of resistance R3
The in-phase input end of voltage follower U1, output end and the resistance R4 of voltage follower U1 are interconnected and connect with the first end of resistance R4
The second end indirect electric capacity C1, the output end of voltage follower U1 connects with transmitting terminal MCU, by transmitting terminal rectifying and wave-filtering electricity
Pressure sampled signal is delivered to transmitting terminal MCU, and the output end of voltage follower U1 also connects with its reverse input end.
Transmitting terminal coil current sample circuit includes resistance R5, R6, R7 and R8, first end and the inverter circuit of resistance R5
Output end connects, the second end ground connection, and it is parallel with electric capacity C3；The first end of resistance R6 is connected with the first end of resistance R5, the
Two two branch roads of termination a, branch road is grounded through electric capacity C2, and another branch road connects the reverse input end of voltage follower U2；Resistance
The first end ground connection of R7, its two branch road of the second termination a, branch road connects the in-phase input end of voltage follower U2, another branch
The first end of road connecting resistance R8；The second segment of resistance R8 connects the output end of voltage follower U2, and voltage follower U2 output
End is also connected to the in-phase input end of voltage follower U3, and the output of voltage follower U3 terminates two branch roads, a branch road and electricity
The reverse input end of pressure follower U3 is connected, and another branch road is connected to transmitting terminal MCU, and transmitting terminal coil current sampled signal is passed
It is handed to transmitting terminal MCU.
Specifically, the voltage signal of transmitting terminal current rectifying and wave filtering circuit output carries out partial pressure by resistance R3 and resistance R4,
By voltage follower U1, then enter transmitting terminal MCU after electric capacity C1 evens up voltage signal.Transmitting coil input current signal
Voltage signal is converted into by accurate sampling resistor R5, then is evened up by electric capacity C3, then by R6, C2, R8, R7 and U2 group
Into filter amplification circuit remove and interference signal and reasonably amplify the voltage signal being transformed by current signal, by U3
Voltage follower, finally enters transmitting terminal MCU.
Further, as shown in figure 3, receiving terminal rectifying and wave-filtering voltage sampling circuit includes the resistance R1 and resistance R2 of series connection,
The output end of the first termination mu balanced circuit of resistance R1；The second end ground connection of resistance R2, second end of resistance R1 and resistance R2's
First end is interconnected and connects the in-phase input end of voltage follower U4, and the output of voltage follower U4 terminates two branch roads, a branch
Road connects with the reverse input end of voltage follower U4, and another branch road connects with receiving terminal MCU, by receiving terminal rectifying and wave-filtering electricity
Pressure sampled signal is delivered to transmitting terminal MCU.
Wherein, load input current sampling apparatus uses current sample chip, and the output end of mu balanced circuit is through current sample
Chip is connected with load, and the output end of current sample chip connects with receiving terminal MCU, by the sampled signal transmission of load input current
To receiving terminal MCU.For example, Hall current sampling A/D chip can be used.
Specifically, resistance R1 and resistance R2 partial pressures take the voltage that mu balanced circuit is exported, and subsequently enter voltage follower
U4, finally enters receiving terminal MCU；Output current signal is changed into voltage signal by current sample chip, into receiving terminal MCU,
Wireless communication receiver module is delivered to through radio communication transmitter module with latter two signal, and is further transferred to transmitting terminal MCU.
The method that wireless power transmission is carried out using above wireless power transmission, in normal conditions, with the wireless of routine
Electric energy transmission system, but when radio energy transmission system is in abnormality, system can make a response rapidly.
As shown in figure 4, abnormal judgement and protection process specifically include following steps：
Relative efficiency threshold value η is set in transmitting terminal MCU1；Setting sampling period T；
Transmitting terminal rectifying and wave-filtering voltage sampling circuit collection transmitting terminal current rectifying and wave filtering circuit output voltage signal V1, transmitting terminal
Coil current sample circuit collection transmitting end-coil input current signal I1；The collection of receiving terminal rectifying and wave-filtering voltage sampling circuit connects
Receiving end current rectifying and wave filtering circuit output voltage signal V2, load input current sampling apparatus collection load input current signal I2；
Transmitting terminal MCU obtains transmitting terminal current rectifying and wave filtering circuit output voltage signal V1, transmitting end-coil input current signal
I1；
Receiving terminal MCU obtains receiving terminal current rectifying and wave filtering circuit output voltage signal V2, load input current signal I2, and will
Two signals are transferred to wireless communication receiver module through radio communication transmitter module；Wireless communication receiver module obtains two signals
Transmitting terminal MCU is further passed to afterwards；
After transmitting terminal MCU obtains above-mentioned signal, relative efficiency calculating is carried out：η=(V2*I2)/(V1*I1) * 100%；
If meeting all the time in time period T：
η≤η1, stopping the energy transmission between wireless transmitting terminals and wireless receiving end, wireless transmitting terminals enter holding state；
Accordingly, if in time period T, certain time point：
η ＞ η1, according to receiving terminal current rectifying and wave filtering circuit output voltage signal V2Drives of the adjustment transmitting terminal MCU to inverter circuit
Dynamic frequency.
That is, carry out efficiency similitude, and by result and setting value η1Compare, if in certain period of time always
Less than efficiency setting value, then control transmitting terminal enters holding state, initial work frequency and output gain immediately, if above
Setting efficiency value, the then outlet side commutating voltage value that transmitting terminal MCU is returned according to the Radio-Frequency Wireless Communication module being attached thereto is adjusted
Section PWM frequency, dutycycle or phase export commutating voltage to stablize.
Claims (3)
1. there is the radio energy transmission system of abnormal state protection function, including wireless transmitting terminals and wireless receiving end, it is described
Wireless transmitting terminals include transmitting terminal current rectifying and wave filtering circuit, transmitting terminal MCU, transmitting end-coil and wireless communication receiver module, transmitting
The output end of current rectifying and wave filtering circuit is held to connect with transmitting end-coil through inverter circuit；The wireless receiving end includes receiving end line
Circle, receiving terminal current rectifying and wave filtering circuit, receiving terminal MCU and radio communication transmitter module, the received end of output for receiving end-coil are whole
Stream filter circuit and mu balanced circuit connect load；Radio communication transmitter module obtains the signal of receiving terminal MCU and is connect with radio communication
Receiving intermodule carries out signal transmission, and the signal value that wireless communication receiver module is obtained is delivered to transmitting terminal MCU；Its feature exists
In：
The output end of transmitting terminal current rectifying and wave filtering circuit is connected to gather the transmitting terminal of transmitting terminal current rectifying and wave filtering circuit output voltage
Rectifying and wave-filtering voltage sampling circuit, the output end of inverter circuit is connected to the transmitting end line of collection transmitting end-coil input current
Loop current sample circuit, the sampled signal of transmitting terminal rectifying and wave-filtering voltage and the sampled signal of transmitting end-coil input current are passed
It is delivered to transmitting terminal MCU；The output end of receiving terminal current rectifying and wave filtering circuit is connected to collection receiving terminal current rectifying and wave filtering circuit output electricity
Crimping receiving end rectifying and wave-filtering voltage sampling circuit, the load that the output end of mu balanced circuit is connected to gather load input current is defeated
Enter current sampling device, the sampled signal and load input current sampled signal of receiving terminal current rectifying and wave filtering circuit output voltage are passed
It is delivered to receiving terminal MCU.
2. there is the radio energy transmission system of abnormal state protection function as claimed in claim 1, it is characterised in that：It is described
Transmitting terminal rectifying and wave-filtering voltage sampling circuit includes the resistance R3 and resistance R4 of series connection, and the first end of resistance R3 connects transmitting terminal rectification
The output end of filter circuit, the second end ground connection of resistance R4, second end of resistance R3 and the first end of resistance R4 are interconnected and connect electricity
The in-phase input end of pressure follower U1, the output end of voltage follower U1 and second end of resistance R4 indirect electric capacity C1, it is electric
The output end of pressure follower U1 connects with transmitting terminal MCU, and transmitting terminal rectifying and wave-filtering voltage sampling signal is delivered into transmitting terminal
The output end of MCU, voltage follower U1 also connects with its reverse input end；
The transmitting terminal coil current sample circuit includes resistance R5, R6, R7 and R8, first end and the inverter circuit of resistance R5
Output end connects, the second end ground connection, and it is parallel with electric capacity C3；The first end of resistance R6 is connected with the first end of resistance R5, the
Two two branch roads of termination a, branch road is grounded through electric capacity C2, and another branch road connects the reverse input end of voltage follower U2；Resistance
The first end ground connection of R7, its two branch road of the second termination a, branch road connects the in-phase input end of voltage follower U2, another branch
The first end of road connecting resistance R8；The second segment of resistance R8 connects the output end of voltage follower U2, and voltage follower U2 output
End is also connected to the in-phase input end of voltage follower U3, and the output of voltage follower U3 terminates two branch roads, a branch road and electricity
The reverse input end of pressure follower U3 is connected, and another branch road is connected to transmitting terminal MCU, and transmitting terminal coil current sampled signal is passed
It is handed to transmitting terminal MCU；
The receiving terminal rectifying and wave-filtering voltage sampling circuit includes the resistance R1 and resistance R2 of series connection, and first termination of resistance R1 is steady
The output end of volt circuit；The second end ground connection of resistance R2, second end of resistance R1 and the first end of resistance R2 are interconnected and connect voltage
The in-phase input end of follower U4, the output of voltage follower U4 terminates two branch roads, and a branch road is with voltage follower U4's
Reverse input end connects, and another branch road connects with receiving terminal MCU, and receiving terminal rectifying and wave-filtering voltage sampling signal is delivered into hair
Penetrate end MCU.
3. there is the radio energy transmission system of abnormal state protection function as claimed in claim 1, it is characterised in that：Load
Input current sampling apparatus uses the output end of current sample chip, mu balanced circuit to be connected with load through current sample chip, electricity
The output end for flowing sampling A/D chip connects with receiving terminal MCU, and load input current sampled signal is transferred into receiving terminal MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621321788.7U CN206272347U (en) | 2016-12-05 | 2016-12-05 | Radio energy transmission system with abnormal state protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621321788.7U CN206272347U (en) | 2016-12-05 | 2016-12-05 | Radio energy transmission system with abnormal state protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206272347U true CN206272347U (en) | 2017-06-20 |
Family
ID=59041801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621321788.7U Withdrawn - After Issue CN206272347U (en) | 2016-12-05 | 2016-12-05 | Radio energy transmission system with abnormal state protection function |
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| Country | Link |
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| CN (1) | CN206272347U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451811A (en) * | 2016-12-05 | 2017-02-22 | 青岛鲁渝能源科技有限公司 | Wireless power transmission system having abnormal state protection function and wireless power transmission method |
| CN107276246A (en) * | 2017-08-23 | 2017-10-20 | 桐城市闲产网络服务有限公司 | A kind of radio energy transmission system |
| CN108808882A (en) * | 2018-07-16 | 2018-11-13 | 中惠创智无线供电技术有限公司 | Wireless power control device and method |
| CN108879899A (en) * | 2018-06-12 | 2018-11-23 | 深圳市华禹无线供电技术有限公司 | Detect communication device and wireless charging system for electric automobile |
| CN112104109A (en) * | 2020-09-11 | 2020-12-18 | 浙江大学 | Controller circuit for wireless power transmission system |
-
2016
- 2016-12-05 CN CN201621321788.7U patent/CN206272347U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451811A (en) * | 2016-12-05 | 2017-02-22 | 青岛鲁渝能源科技有限公司 | Wireless power transmission system having abnormal state protection function and wireless power transmission method |
| 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 |
| CN107276246A (en) * | 2017-08-23 | 2017-10-20 | 桐城市闲产网络服务有限公司 | A kind of radio energy transmission system |
| CN108879899A (en) * | 2018-06-12 | 2018-11-23 | 深圳市华禹无线供电技术有限公司 | Detect communication device and wireless charging system for electric automobile |
| CN108808882A (en) * | 2018-07-16 | 2018-11-13 | 中惠创智无线供电技术有限公司 | Wireless power control device and method |
| CN112104109A (en) * | 2020-09-11 | 2020-12-18 | 浙江大学 | Controller circuit for wireless power transmission system |
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