CN106410979A - Wireless electric energy transmission system and control method thereof - Google Patents
Wireless electric energy transmission system and control method thereof Download PDFInfo
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- CN106410979A CN106410979A CN201611102432.9A CN201611102432A CN106410979A CN 106410979 A CN106410979 A CN 106410979A CN 201611102432 A CN201611102432 A CN 201611102432A CN 106410979 A CN106410979 A CN 106410979A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004146 energy storage Methods 0.000 claims abstract description 46
- 238000005070 sampling Methods 0.000 claims abstract description 28
- 238000004891 communication Methods 0.000 claims description 37
- 230000005611 electricity Effects 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 7
- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
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- H02J5/005—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/24—Inductive coupling
- H04B5/26—Inductive coupling using coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a wireless electric energy transmission system and control method thereof. Through arrangement of an energy storage module capable of storing energy temporarily at a wireless receiving end, the energy storage module provides energy for the wireless receiving end in a system standby process, whether energy in the energy storage module is exhausted is judged through a current sampling circuit and a voltage sampling circuit, thereby further feeding back the situation to a transmitting end, and a transmitting end MCU supplies energy to the receiving end through control of the transmitting end working frequency and PWM duty ratio, thereby further assisting energy in a power supply module to reach an upper limit of a preset value again. Through the wireless electric energy transmission system and control method thereof provided by the invention, system power consumption in a continuous standby charging process of the receiving end is effectively reduced.
Description
Technical field
The invention belongs to wireless charging field, more particularly, to a kind of wireless charging system is standby in receiving device in system
When reduce whole system power consumption control method.
Background technology
At present, wireless charging technology quickly grows, because its noncontact, no electric wire connect, the characteristic such as easy to operate, enjoy pass
Note, various wireless charging products are also come out one after another.
Wireless charging system is different from traditional monofocal equipment, and it has two electricity as a kind of New-type charge equipment
The block combiner of gas independence forms, respectively transmitting terminal and receiving terminal, does not have traditional electrically connecting between transmitting terminal and receiving terminal
Connect, it is to transmit energy by magnetic field, enable two ends isolation, and two end systems produce magnetic by electromagnetic induction principle
, complete energy transmission.
But, above-mentioned wireless charging system, the transmission due to energy relies on magnetic field, and wireless charging device is keeping standby
During, even if receiving terminal electrical equipment only needs to the energy of very little it is also necessary to activate the magnetic field between two coils, complete energy and pass
Defeated, and maintain magnetic field can consume a lot of energy.
For the problems referred to above, the mode that existing wireless charging product reduces stand-by power consumption is concentrated mainly on transmitting terminal, that is,
By detecting receiving terminal whether in the working region of transmitting terminal, and determine whether to be in holding state.But for receiving terminal not
Take away in time or in the case that receiving terminal is in very low-power consumption, not yet solve in prior art receiving device standby when system
System power problemses.In the case of this kind, the energy that receiving terminal needs in standby is also required to obtain from transmitting terminal, and lasting treats
Machine charges needs coil persistently to excite magnetic field, and the stand-by power consumption that this process produces is very big, can affect the overall standby damage of system
Consumption.
Content of the invention
In order to solve the above problems, the invention provides a kind of radio energy transmission system and its control method, this invention
Reduce the system power dissipation in receiving terminal continuous standby charging process.
In order to achieve the above object, the technical solution used in the present invention is：
A kind of radio energy transmission system, is connected with outward load to be charged, including the wireless transmitting terminals connecting electrical network, Yi Jike
Realize electric energy and the wireless receiving end of communication signal transmission with wireless transmitting terminals, wireless transmitting terminals include transmitting terminal in sequential series
Current rectifying and wave filtering circuit, inverter circuit and transmitting coil, wireless receiving end includes receiving coil in sequential series, receiving terminal rectification
Filter circuit, DC/DC translation circuit, wireless transmitting terminals also include electrically connecting the transmitting terminal MCU of inverter circuit, and can receive no
The wireless communication receiver module of line receiving terminal signal of communication, wireless communication receiver module connects transmitting terminal MCU, will be from wirelessly connecing
The signal of communication that receiving end receives sends to transmitting terminal MCU；Wireless receiving end also includes receiving terminal MCU, is connected to receiving terminal rectification
Between filter circuit and DC/DC translation circuit can temporary transient storage energy energy-storage module, connect receiving terminal current rectifying and wave filtering circuit defeated
Go out the voltage sampling circuit at end, connect the current sampling circuit of DC/DC translation circuit outfan, and can send out to wireless transmitting terminals
Penetrate the radio communication transmitter module of signal of communication, wherein, the outfan of voltage sampling circuit and current sampling circuit is all connected to
Receiving terminal MCU；
The current signal of current sampling circuit Real-time Collection is sent to receiving terminal MCU, and receiving terminal MCU is according to this current signal
Judge whether wireless receiving end is in holding state with the size of pre-set current value, and generate the first judgement signal, this first is sentenced
Break signal is sent to transmitting terminal MCU by radio communication transmitter module and wireless communication receiver module；
The voltage signal that voltage sampling circuit gathers after rectification is sent to receiving terminal MCU, and receiving terminal MCU believes according to this voltage
Number judge that in energy-storage module, whether energy has reached preset energy value, and generate second with the higher limit size of predetermined voltage range
Judge signal；Receiving terminal MCU judges energy in energy-storage module according to the lower limit size of this voltage signal and predetermined voltage range
Whether reach lower limit, and generate the 3rd and judge signal；This second judge signal and this second judge signal through channel radio
Letter transmitter module and wireless communication receiver module are sent to transmitting terminal MCU；
According to receive first, transmitting terminal MCU judges that signal controls output frequency and the output signal at wireless receiving end
Dutycycle, second according to receiving judge signal control wireless charging system whether close, the 3rd according to receiving sentences
Break signal controls whether receiving terminal remotivates transmitting coil.
As the optimization further of the present invention, it is connected between energy-storage module and receiving terminal MCU and can power for receiving terminal MCU
Auxiliary power module.
As the optimization further of the present invention, be provided with transmitting coil can induced emission coil and receiving coil position biography
Sensor, sensor forms induced signal according to transmitting coil with receiving coil distance, and sensor is connected with transmitting terminal MCU, to connect
Receive the induced signal that proximity sensor is formed, transmitting terminal MCU judges wireless receiving end whether in work according to this induced signal
In region.
As the optimization further of the present invention, receiving coil is built-in with the sensing that can strengthen proximity sensor induction
Thing.
A kind of control method of radio energy transmission system, using above-mentioned radio energy transmission system, walks including following
Suddenly：S1：Starting radio energy transmission system is that load is charged；S2：Judge whether wireless receiving end enters holding state：Receiving terminal
The current signal of input in MCU Real-time Collection current sampling circuit, and judge whether this current signal is less than pre-set current value, if
It is then to execute S3；If it is not, being then back to S1；S3：Energy-storage module stores energy：Transmitting terminal MCU controls output frequency pre- for first
If the operating frequency of multiple, and control the working signal dutycycle that output signal dutycycle is the second preset multiple, wireless transmit
Hold to wireless receiving end launch electric energy, the energy-storage module at wireless receiving end by energy stores, to maintain the energy loading standby charging
Consumption；S4：Judge whether energy has reached preset upper limit to energy-storage module：The electricity of input in receiving terminal MCU collection voltages sample circuit
Pressure signal, and judge whether voltage signal reaches pre-set upper voltage limit value, if so, then execute S5, if it is not, then returning execution S3；
S5：Transmitting terminal MCU controls radio energy transmission system to close, and wireless receiving end is maintained by energy-storage module and loads standby charging
Energy；S6:Judge in energy-storage module, whether energy is less than pre-determined lower limit：The electricity of receiving terminal MCU collection voltages sample circuit input
Pressure signal, and judge whether this voltage signal is less than predeterminated voltage lower limit, if so, then return execution S3；As no, then return and hold
Row S5.
Compared with prior art, advantages of the present invention and good effect are：
The present invention be by receiving terminal setting can storage energy energy-storage module, this energy-storage module is in system standby process
In provide energy for receiving terminal, and judge in energy-storage module, whether energy consumes by current sampling circuit and voltage sampling circuit
To the greatest extent, to feed back to transmitting terminal further, transmitting terminal MCU passes through to control transmitting terminal operating frequency and PWM duty cycle, to receiving terminal
Energy supply, makes energy in auxiliary power module reach the preset value upper limit again further.By the present invention, effectively reduce and connecing
System power dissipation in receiving end continuous standby charging process.
Brief description
Fig. 1 is the schematic diagram of radio energy transmission system of the present invention；
Fig. 2 is the charge control method flow chart of radio energy transmission system of the present invention.
Specific embodiment
Below, by exemplary embodiment, the present invention is specifically described.It should be appreciated, however, that not entering one
In the case of step narration, the element in an embodiment, structure and features can also be advantageously incorporated into other embodiment
In.
In describing the invention, it should be noted that the term " first " being related in the present invention, " second ", " the 3rd "
It is only used for describing purpose, and it is not intended that indicating or hint relative importance.
Referring to Fig. 1, it is the block diagram of radio energy transmission system in the present invention.As shown in figure 1, the radio energy of the present invention passes
Defeated system, is connected with outward load to be charged, including connect electrical network wireless transmitting terminals, and can with wireless transmitting terminals realize electric energy and
The wireless receiving end of communication signal transmission, wireless transmitting terminals include transmitting terminal current rectifying and wave filtering circuit in sequential series, inverter circuit
And transmitting coil, wireless receiving end includes receiving coil in sequential series, receiving terminal current rectifying and wave filtering circuit, DC/DC conversion electricity
Road.By the setting of above-mentioned transmitting coil and receiving coil, the transmission of achievable radio energy, the receiving coil at this passes through magnetic
The energy of field coupling pickup transmitting coil；And the setting of above-mentioned communication transmitter module and communication receipt module is it is achieved that wireless send out
Communication transfer between sending end and wireless receiving end, the foundation of communication transfer is conducive to wireless transmitting terminals to be born according to wireless receiving end
Carry demand and change in good time.
With further reference to Fig. 1, the wireless transmitting terminals in Fig. 1 also include electrically connecting the transmitting terminal MCU, Yi Jike of inverter circuit
Receive the wireless communication receiver module of wireless receiving end signal of communication, wireless communication receiver module connects transmitting terminal MCU, will be from
The signal of communication that wireless receiving end receives sends to transmitting terminal MCU；Wireless receiving end also includes receiving terminal MCU, is connected to reception
Between end current rectifying and wave filtering circuit and DC/DC translation circuit can temporary transient storage energy energy-storage module, connection receiving terminal rectifying and wave-filtering
The voltage sampling circuit of circuit output end, connects the current sampling circuit of DC/DC translation circuit outfan, and can send out to wireless
Penetrate the radio communication transmitter module of end transmitting signal of communication, wherein, the outfan of voltage sampling circuit and current sampling circuit is all
It is connected to receiving terminal MCU.
The current sampling circuit of above-mentioned middle setting and voltage sampling circuit, it connects specifically acting as of receiving terminal MCU：
The current signal of Real-time Collection is sent to receiving terminal MCU by current sampling circuit, and receiving terminal MCU according to this current signal and presets
The size of current value judges whether wireless receiving end is in holding state, and generates the first judgement signal, and this first judges signal
Sent to transmitting terminal MCU by radio communication transmitter module and wireless communication receiver module；After voltage sampling circuit collection rectification
Voltage signal be sent to receiving terminal MCU, receiving terminal MCU is compared simultaneously with the higher limit of predetermined voltage range according to this voltage signal
Judge in energy-storage module, whether energy has reached preset energy value, to generate the second judgement signal；Receiving terminal MCU is according to this voltage
Signal is compared with the lower limit of predetermined voltage range and judges that in energy-storage module, whether energy has reached energy lower limit, and generate
3rd judges signal；This second judge signal and this second judge signal through radio communication transmitter module and wireless communication receiver
Module is sent to transmitting terminal MCU；According to receive first, transmitting terminal MCU judges that signal controls the output frequency at wireless receiving end
And the dutycycle of output signal, second according to receiving judge that signal controls whether wireless charging system closes, according to connecing
The 3rd receiving judges that signal controls whether receiving terminal remotivates transmitting coil.
In above-mentioned, first judges that signal includes "Yes" order and "No" order, when for "Yes" order, corresponding transmitting terminal
MCU controls the wireless transmitting terminals output operating frequency of the first prearranged multiple and the working signal dutycycle of the second prearranged multiple；
And when sending "No" order, corresponding transmitting terminal MCU controls wireless transmitting terminals to believe with normal working frequency and normal work
Number duty cycle.Second judges that signal also includes "Yes" order and "No" order, when for "Yes" order, shows energy-storage module
Reach the energy storage upper limit, then wireless transmitting terminals can stop excitation-emission coil, therefore now, corresponding transmitting terminal MCU will control
Wireless transmitting system is closed, and the holding state of load will rely on energy-storage module to carry out energy supply；When for "No" order, show energy storage
Module not yet energy storage finishes, then need to continue to charge, and now corresponding transmitting terminal MCU will control wireless transmitting terminals to continue to output first
The working signal dutycycle of the operating frequency of prearranged multiple and the second prearranged multiple.3rd judges that signal also includes "Yes" order
With "No" order, when for "Yes" order, show that energy-storage module has reached energy lower limit, need to supplement in time energy, now,
Corresponding transmitting terminal MCU then restarts radio energy system, and controls wireless transmitting terminals to export the work of the first prearranged multiple
The working signal dutycycle of frequency and the second prearranged multiple, is charged for energy-storage module again；When for "No" order, table
Bright energy-storage module still can maintain the standby operation of load it is not necessary to supplement energy, then radio energy system continues to close, corresponding
Transmitting terminal MCU does not send work order.
In addition, being described as follows to being related to module in above-mentioned transmitting terminal MCU and receiving terminal MCU：Receiving terminal MCU bag
Include can in collection voltages sample circuit and current sampling circuit voltage or electric current acquisition module, can be by the voltage collecting or electricity
Flow the judge module compared with preset value, judge module is formed and judges signal accordingly, and passed by wireless communication module
Deliver to transmitting terminal MCU, transmitting terminal MCU includes receiving the receiver module judging signal, and can be according to receiver module collection
Signal sends the control module of control signal.
With further reference to Fig. 1, the wireless receiving end in the present invention is additionally included in and is connected between energy-storage module and receiving terminal MCU
The auxiliary power module powered of Wei receiving terminal MCU, auxiliary power module is arranged at the outfan of energy-storage module, on the one hand
Can load standby in receiving terminal MCU operation direct basis energy-storage module electric energy, on the other hand, prevent auxiliary power supply
Module leads to the phenomenon of the excitation-emission coil when loading standby to occur before being arranged at energy-storage module.
In addition, being connected with drive circuit between transmitting terminal MCU and inverter circuit, the control being formed in control module is believed
Number inverter circuit is controlled by drive circuit.
Also be provided with transmitting coil in the present invention can induced emission coil and receiving coil position sensor, sensor
Induced signal is formed with receiving coil distance according to transmitting coil, sensor is connected with transmitting terminal MCU, is formed to receive sensor
Induced signal, whether transmitting terminal MCU judge wireless receiving end in working region according to this induced signal.Need explanation
It is that heretofore described working region is centered on transmit coil, in suitable vertical operation distance and horizontal-shift bar
Under part, and ensure the maximum functional region of system effectiveness and safe and reliable work.
In addition, above-mentioned sensor is cognitive radio receiving terminal to remove or enter the existing sensor of state, such as Hall
Magnetic field sensor, GMR giant magneto-resistance sensor, infrared sensor etc..Meanwhile, in order that the induction of proximity sensor more
Good, receiving coil can be placed with and strengthen the inductor that proximity sensor senses effect.Illustrate, such as permanent magnet, ferromagnetic
Property metal, visual indicia etc..
Referring to Fig. 2, Fig. 2 is the flow chart of the control method of radio energy transmission system of the present invention.As shown in Fig. 2 this is no
The control method of line electric energy transmission system, using above-mentioned radio energy transmission system, comprises the following steps：
S1：Starting radio energy transmission system is that load is charged；
S2：Judge whether wireless receiving end enters holding state：Input in receiving terminal MCU Real-time Collection current sampling circuit
Current signal, and judge that whether this current signal is less than pre-set current value, if so, then execute S3；If it is not, being then back to S1；
S3：Energy-storage module stores energy：Transmitting terminal MCU controls the operating frequency that output frequency is the first preset multiple, and
Control the working signal dutycycle that output signal dutycycle is the second preset multiple, wireless transmitting terminals launch electricity to wireless receiving end
Can, the energy-storage module at wireless receiving end by energy stores, to maintain the energy consumption loading standby charging；
S4：Judge whether energy has reached preset upper limit to energy-storage module：Input in receiving terminal MCU collection voltages sample circuit
Voltage signal, and judge whether voltage signal reaches pre-set upper voltage limit value, if so, then execute S5, if it is not, then returning execution
S3；
S5：Transmitting terminal MCU controls radio energy transmission system to close, and wireless receiving end maintains load to treat by energy-storage module
The energy that machine charges；
S6:Judge in energy-storage module, whether energy is less than pre-determined lower limit：The input of receiving terminal MCU collection voltages sample circuit
Voltage signal, and judge whether this voltage signal is less than predeterminated voltage lower limit, if so, then return execution S3；As no, then return
Execution S5.
It should be noted that above-mentioned pre-set current value, pre-set upper voltage limit value, predeterminated voltage lower limit, preset multiple etc.
It is all by artificially specifically setting, its concrete numerical value is not especially limited, the setting of above-mentioned numerical value is not unalterable simultaneously,
It specifically can set according to the requirement of load etc..
By above-mentioned charge control method it is achieved that being supported in standby, wireless transmitting terminals can be by being spaced work
Mode activate coil magnetic field, convey energy to wireless receiving end, this portion of energy is first stored in the energy-storage module of receiving terminal,
For the idling consumption of load, when energy-storage module energy loss totally when, reactivate system, this mode makes system most of
Time need not activate coil, effectively reduces system standby loss.
Claims (5)
1. a kind of radio energy transmission system, is connected with outward load to be charged, including the wireless transmitting terminals connecting electrical network, and can be with
Wireless transmitting terminals realize electric energy and the wireless receiving end of communication signal transmission, and it is whole that wireless transmitting terminals include transmitting terminal in sequential series
Stream filter circuit, inverter circuit and transmitting coil, wireless receiving end includes receiving coil in sequential series, receiving terminal rectification filter
Wave circuit, DC/DC translation circuit it is characterised in that：
Wireless transmitting terminals also include electrically connecting the transmitting terminal MCU of inverter circuit, and can receive wireless receiving end signal of communication
Wireless communication receiver module, wireless communication receiver module connects transmitting terminal MCU, the signal of communication that will receive from wireless receiving end
Send to transmitting terminal MCU；
Wireless receiving end also includes receiving terminal MCU, and being connected between receiving terminal current rectifying and wave filtering circuit and DC/DC translation circuit can be temporary
When storage energy energy-storage module, connect receiving terminal rectification filter circuit output end voltage sampling circuit, connect DC/DC conversion
The current sampling circuit of circuit output end, and the radio communication transmitter module of signal of communication can be launched to wireless transmitting terminals, its
In, the outfan of voltage sampling circuit and current sampling circuit is all connected to receiving terminal MCU；
The current signal of current sampling circuit Real-time Collection is sent to receiving terminal MCU, receiving terminal MCU according to this current signal with pre-
If the size of current value judges whether wireless receiving end is in holding state, and generate the first judgement signal, this first judgement letter
Number sent to transmitting terminal MCU by radio communication transmitter module and wireless communication receiver module；
Voltage sampling circuit gather rectification after voltage signal be sent to receiving terminal MCU, receiving terminal MCU according to this voltage signal with
The higher limit size of predetermined voltage range judges in energy-storage module, whether energy has reached preset energy value, and generates the second judgement
Signal；According to the lower limit size of this voltage signal and predetermined voltage range, receiving terminal MCU judges in energy-storage module energy whether
Reach lower limit, and generate the 3rd and judge signal；This second judge signal and this second judge that signal is sent out through radio communication
Penetrate module and wireless communication receiver module is sent to transmitting terminal MCU；
According to receive first, transmitting terminal MCU judges that signal controls the output frequency at wireless receiving end and accounting for of output signal
Empty ratio, second according to receiving judges that signal controls whether wireless charging system closes, according to the 3rd judgement letter receiving
Number control receiving terminal whether remotivate transmitting coil.
2. according to claim 1 radio energy transmission system it is characterised in that：Connect between energy-storage module and receiving terminal MCU
It is connected to the auxiliary power module that can power for receiving terminal MCU.
3. radio energy transmission system according to claim 1 or claim 2 it is characterised in that：It is provided with transmitting coil to sense and send out
Ray circle and the sensor of receiving coil position, sensor forms induced signal according to transmitting coil with receiving coil distance, passes
Sensor is connected with transmitting terminal MCU, and to receive the induced signal of proximity sensor formation, transmitting terminal MCU is according to this induced signal
Judge wireless receiving end whether in working region.
4. according to claim 3 radio energy transmission system it is characterised in that：Receiving coil is built-in with and can strengthen proximity
The inductor of sensor sensing intensity.
5. a kind of control method of radio energy transmission system, usage right requires the radio energy any one of 1-4 to pass
Defeated system is it is characterised in that comprise the following steps：
S1：Starting radio energy transmission system is that load is charged；
S2：Judge whether wireless receiving end enters holding state：The electricity of input in receiving terminal MCU Real-time Collection current sampling circuit
Stream signal, and judge whether this current signal is less than pre-set current value, if so, then execute S3；If it is not, being then back to S1；
S3：Energy-storage module stores energy：Transmitting terminal MCU controls the operating frequency that output frequency is the first preset multiple, and controls
Output signal dutycycle is the working signal dutycycle of the second preset multiple, and wireless transmitting terminals launch electric energy to wireless receiving end,
The energy-storage module at wireless receiving end by energy stores, to maintain the energy consumption loading standby charging；
S4：Judge whether energy has reached preset upper limit to energy-storage module：The electricity of input in receiving terminal MCU collection voltages sample circuit
Pressure signal, and judge whether voltage signal reaches pre-set upper voltage limit value, if so, then execute S5, if it is not, then returning execution S3；
S5：Transmitting terminal MCU controls radio energy transmission system to close, and wireless receiving end is maintained by energy-storage module and loads standby filling
The energy of electricity；
S6:Judge in energy-storage module, whether energy is less than pre-determined lower limit：The voltage of receiving terminal MCU collection voltages sample circuit input
Signal, and judge whether this voltage signal is less than predeterminated voltage lower limit, if so, then return execution S3；As no, then return execution
S5.
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| CN201611102432.9A CN106410979B (en) | 2016-12-05 | 2016-12-05 | Radio energy transmission system and its control method |
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Cited By (12)
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| CN106972582A (en) * | 2017-04-28 | 2017-07-21 | 中惠创智无线供电技术有限公司 | A kind of high-power wireless charging system and its control method |
| CN107093883A (en) * | 2017-06-27 | 2017-08-25 | 青岛鲁渝能源科技有限公司 | Protection circuit, radio energy transmission system and excessively stream/short-circuit protection method |
| CN107707038A (en) * | 2017-10-31 | 2018-02-16 | 中国科学院合肥物质科学研究院 | A kind of Internet of Things wireless communication apparatus electric power system and its monitoring method |
| CN108667155A (en) * | 2018-06-08 | 2018-10-16 | 深圳森阳环保材料科技有限公司 | A kind of radio energy transmission system and control method |
| CN109217494A (en) * | 2017-07-08 | 2019-01-15 | 厦门新页科技有限公司 | A kind of solution mobile phone wireless fills disconnected system when charging |
| CN109510322A (en) * | 2018-11-09 | 2019-03-22 | 梁樂聞 | Normal cell wireless charging system |
| CN110199453A (en) * | 2017-04-07 | 2019-09-03 | Oppo广东移动通信有限公司 | Charging equipment, wireless charging device, wireless charging method and system |
| CN110518717A (en) * | 2019-09-05 | 2019-11-29 | 北京交通大学 | Information interactive device and method based on non-contact power transmission system |
| CN110871697A (en) * | 2019-10-12 | 2020-03-10 | 北京航空航天大学 | Wireless charging system and method for electric bus station |
| CN111884356A (en) * | 2020-07-07 | 2020-11-03 | 日立楼宇技术（广州）有限公司 | Wireless power supply system, method and device of elevator and main control equipment |
| CN112051914A (en) * | 2020-08-10 | 2020-12-08 | 武汉理工大学 | Plug-free storage device based on wireless energy transmission technology |
| CN112072801A (en) * | 2020-09-16 | 2020-12-11 | 杭州老板电器股份有限公司 | Wireless charging and discharging module control method, kitchen appliance control method and controller |
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