CN106532978A - Wireless electric energy transmission system and wireless electric energy transmission method - Google Patents
Wireless electric energy transmission system and wireless electric energy transmission method Download PDFInfo
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- CN106532978A CN106532978A CN201611103025.XA CN201611103025A CN106532978A CN 106532978 A CN106532978 A CN 106532978A CN 201611103025 A CN201611103025 A CN 201611103025A CN 106532978 A CN106532978 A CN 106532978A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The invention provides a wireless electric energy transmission system and a wireless electric energy transmission method. Through setting a multi-stage start circuit, a surge current of a transmitting terminal power frequency rectification filter circuit in a powered-on state is inhibited; through step-by-step opening of a duty ratio carried out by a transmitting terminal MCU, a surge current of an LC resonance circuit on an inversion loop is inhibited; through controlling an opening time sequence of a back-stage BUCK voltage stabilizing circuit, influence of load switching on system start is inhibited. The method is advantaged in that problems of the surface currents of the transmitting terminal power frequency rectification filter circuit and the LC resonance inversion circuit in the powered-on state and system stability and reliability of load switching in a start process can be effectively solved.
Description
Technical field
A kind of the invention belongs to wireless power transmission field, more particularly to wireless power transmission field of gradable startup.
Background technology
Radio energy transmission system is to convert electrical energy into the relaying energy of other forms (such as electromagnetic field by emitter
Energy, laser, microwave and mechanical wave etc.), after one segment distance of empty transmission, then electric energy is converted to by energy is relayed by receptor,
Realize wireless power transmission.
Radio energy transmission system is generally high by transmitting terminal industrial frequency rectifying filter circuit, transmitting terminal inverter circuit, receiving terminal
Frequency current rectifying and wave filtering circuit, 4 part of receiving terminal mu balanced circuit composition, each section can all produce the surge electricity of moment when upper electric
Stream.Make a concrete analysis of below for the surge current of each section：
(1) the transmitting terminal industrial frequency rectifying filter circuit of radio energy transmission system, receiving terminal rectifier filter circuit are led to
Often it is made up of rectifier bridge and filter capacitor.In powered on moment, as the initial voltage on capacitor is zero to form very big wink
When surge current, particularly high power switching power supply, its input using larger capacitance amount filter capacitor, its surge current can
Up to more than 100A.In the surge current amplitude that power on moment is so big, frequently can lead to Switching Power Supply postorder circuit damage,
Input blowout, sometimes even can be by the burning of contact of closing switch, and the lighter can also make air switch close not brake application.
(2) when transmitting terminal inverter circuit directly goes up electricity, LC series resonances (including transmitting coil, electric capacity and receiving coil)
The surge current of moment can be produced, inverter circuit device failure is caused.
(3), when the load of receiving terminal switches (underloading to heavily loaded when), will also result in temporary transient off resonance and to drag down receiving terminal whole
Output voltage after stream, causes the unstable of receiving terminal system work.
Above-mentioned reason can cause Switching Power Supply normally cannot use, and in current prior art, ask for above-mentioned
The no preferable solution of topic.
The content of the invention
In order to solve the above problems, the invention provides a kind of radio energy transmission system and wireless power transmission controlling party
Method, when the invention effectively solves electric, transmitting terminal industrial frequency rectifying filter circuit, the wave of LC resonance inversion circuit powered on moment
Gush electric current, and the stability for loading system when switching.
In order to achieve the above object, the technical solution used in the present invention is：
A kind of radio energy transmission system, including the wireless transmitting terminals for being connected to electrical network, and can receive wireless transmitting terminals
The wireless receiving end of electric energy, wireless transmitting terminals include the transmitting coil that can transmit radio energy, and can receive communication signal
Communication receipt module；Connect load outside wireless receiving end, including the receiving coil that can receive transmitting electric energy in transmitting coil, Yi Jike
Receiving coil output electric energy is converted into communication signal to transmit to the communication transmitter module of communication receipt module, wireless transmitting terminals are also
Including industrial frequency rectifying filter circuit, the outfan of industrial frequency rectifying filter circuit is connected with inverter circuit, transmitting coil connection inversion
The outfan of circuit, be provided with transmitting coil can induced emission coil and receiving coil position sensor, sensor according to
Ray circle forms induced signal with receiving coil distance, and sensor is connected with transmitting terminal MCU, to receive the sensing of sensor formation
Signal, and judge wireless receiving end whether in working region according to the induced signal；Wireless transmitting terminals also include arranging
In the soft starting circuit of industrial frequency rectifying filter circuit input, the input connection electrical network of soft starting circuit, transmitting terminal MCU are electrically connected
The control end of soft starting circuit, to control the startup of soft starting circuit.
Used as the further optimization of the present invention, soft starting circuit includes the power resistor R1 for being connected to electrical network, is parallel to work(
The gate-controlled switch K1 of rate resistance R1, is series at the K2 of power resistor R1 and gate-controlled switch K1, and wherein transmitting terminal MCU connections are controllable to open
The control end of K1 and gate-controlled switch K2 is closed, gate-controlled switch K1 and gate-controlled switch K2 is normally closed switch.
Used as the further optimization of the present invention, the receiving coil at wireless receiving end is connected with rectifier filter circuit, high
The outfan of frequency current rectifying and wave filtering circuit is connected with receiving terminal MCU and BUCK mu balanced circuit, receiving terminal MCU connection communications transmitting mould
Digital data transmission after conversion is formed communication signal to the transmitter module that communicates, while the connection BUCK of receiving terminal MCU by block
Mu balanced circuit；Connect load outside BUCK mu balanced circuits.
Used as the further optimization of the present invention, being provided with receiving coil to strengthen the mark of sensor sensing.
A kind of wireless power transmission control method, using above-mentioned radio energy transmission system, comprises the following steps：
S1：For electricity on radio energy transmission system；
S2：Whether detection wireless receiving end is moved in the working region of wireless transmitting terminals, in this way, then performs S3；If not,
Return S1；
S3：After the first Preset Time of time delay, transmitting terminal MCU control gate-controlled switch K2 closures, to suppress transmitting terminal power frequency whole
Surge current on stream filter circuit during electricity；
S4：After the second Preset Time of time delay, transmitting terminal MCU output pwm control signals, and controlled output frequency is gain
Minima, output duty cycle are gradually increased to default dutycycle to suppress LC resonance inversions within the unit interval according to predetermined ratio
Circuit powered on moment produce surge current, afterwards transmitting terminal MCU further control gate-controlled switch K1 closure.
S5：Receiving terminal MCU control BUCK mu balanced circuits are closed, and transmitting terminal MCU judges whether to receive receiving terminal communication letter
Number, in this way, then S5 is performed, if not, performing S7；
S6：According to signal of communication, transmitting terminal MCU judges whether the voltage at wireless receiving end is more than preset voltage value, in this way,
S7 is performed then；If not, return performing S5；
S7：Receiving terminal MCU control BUCK start, and transmitting terminal MCU adjusts output frequency to predeterminated frequency value；
S8：Transmitting terminal MCU controlled outputs frequency is gain minima respective frequencies, and is in radio energy transmission system
Resting state；
S9：It is back to S2 steps.
As the present invention further optimization, the step of S2 in, specially：Sensor real-time detection wireless receiving end is
In no immigration working region, and form induced signal and send into transmitting terminal MCU, transmitting terminal MCU is judged according to the induced signal
Whether wireless receiving end is entered in the working region of wireless transmitting terminals.
Compared with prior art, advantages of the present invention and good effect are：
1st, radio energy transmission system of the invention, by arranging classification soft starting circuit, and default corresponding time delay
Time, by the control of transmitting terminal MCU, the surge electricity occurred in effectively avoiding radio energy transmission system power up
Stream.
2nd, radio energy transmission system of the invention, by the way of dutycycle increase is gradually controlled, makes wireless transmitting terminals
Energy gradually can transmit to wireless receiving end, it is suppressed that LC resonance circuits in inverter circuit powered on moment produce surge electricity
Stream.
Description of the drawings
Fig. 1 is the block diagram of radio energy transmission system of the present invention；
Fig. 2 is the schematic diagram of wireless transmitting terminals in Fig. 1；
Fig. 3 is the flow chart of wireless power transmission control method of the present invention；
Fig. 4 is the graph of a relation of gain and output frequency.
Specific embodiment
Below, the present invention is specifically described by exemplary embodiment.It should be appreciated, however, that not entering one
In the case of step narration, the element, structure and features in an embodiment can also be advantageously incorporated into other embodiment
In.
In describing the invention, it should be noted that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as indicating or implies relative importance.
Referring to Fig. 1, it is the block diagram of radio energy transmission system of the present invention.As shown in figure 1, the wireless power transmission of the present invention
System, including the wireless transmitting terminals for being connected to electrical network, and can receive the wireless receiving end of wireless transmitting terminals electric energy, wireless transmit
End includes the transmitting coil that can transmit radio energy, and the communication receipt module that can receive communication signal；Outside wireless receiving end
Even load, including the receiving coil that can receive transmitting electric energy in transmitting coil, and receiving coil output electric energy can be converted into
Communication signal is transmitted to the communication transmitter module of communication receipt module, and wireless transmitting terminals also include industrial frequency rectifying filter circuit, work
The outfan of frequency current rectifying and wave filtering circuit is connected with inverter circuit, and transmitting coil connects the outfan of inverter circuit, in transmitting coil
Be provided with can induced emission coil and receiving coil position sensor, sensor formed with receiving coil distance according to transmitting coil
Induced signal, sensor are connected with transmitting terminal MCU, to receive the induced signal of sensor formation, and are sentenced according to the induced signal
It is disconnected to judge wireless receiving end whether in working region；Wireless transmitting terminals also include being arranged on industrial frequency rectifying filter circuit input
Soft starting circuit, transmitting terminal MCU is electrically connected the control end of soft starting circuit, to control the startup of soft starting circuit.
With reference to shown in Fig. 2, above-mentioned soft starting circuit includes the power resistor R1 for being connected to electrical network, is parallel to power resistor R1
Gate-controlled switch K1, be series at the K2 of power resistor R1 and gate-controlled switch K1, wherein transmitting terminal MCU connection gate-controlled switch K1 and can
The control end of control switch K2, gate-controlled switch K1 and gate-controlled switch K2 are normally closed switch.
It is described in further detail above-mentioned soft start-up process：Transmitting terminal MCU from it is upper electricity to start export pwm control signal have one
The section time, during this period of time the pin state of transmitting terminal MCU is uncertain, if being now likely to result in inverse to electricity on inverter circuit
Power transformation path loss is bad；And because gate-controlled switch K2 disconnect, it is upper electricity after 220V alternating currents will not Jing industrial frequency rectifying filter circuits be added to inversion
On circuit, gate-controlled switch K2 closures are controlled on transmitting terminal MCU after electricity after first scheduled time of time delay again, so as to play protection inversion
The effect of circuit；Simultaneously because gate-controlled switch K1 is normally closed, the alternating current Jing power resistors R1 sent from electrical network after upper electricity reaches rear class
Circuit, because input voltage is constant, circuit because concatenates power resistor R1 and increases all-in resistance, so electric current reduces, that is, increases work(
Rate resistance R1 effectively suppresses the surge current produced because of transmitting terminal industrial frequency rectifying filter circuit bulky capacitor.The normal work of late-class circuit
After work, transmitting terminal MCU control gate-controlled switch K1 closures make the alternating current of electrical network flow through gate-controlled switch K1, so as to reduce
Power resistor generates heat, and improves system effectiveness.
With further reference to Fig. 1, the attachment structure at wireless receiving end, the receiving coil at wireless receiving end in Fig. 1, is also show
Rectifier filter circuit is connected with, the outfan of rectifier filter circuit is connected with receiving terminal MCU and BUCK mu balanced circuit,
Digital data transmission after conversion is formed communication signal to the transmitter module that communicates by receiving terminal MCU connection communication transmitter modules,
While the connection BUCK mu balanced circuits of receiving terminal MCU；Connect load outside BUCK mu balanced circuits.
In above-mentioned, as one kind preferably, being provided with receiving coil to strengthen the mark of sensor sensing.
Referring to Fig. 3, it is the flow chart of wireless power transmission control method of the present invention.As shown in figure 3, the radio of the present invention
Energy transfer control method, using above-mentioned radio energy transmission system, comprises the following steps：
S1：For electricity on radio energy transmission system；
S2：Whether detection wireless receiving end is moved in the working region of wireless transmitting terminals, in this way, then performs S3；If not,
Return S1；
S3：After the first Preset Time of time delay, transmitting terminal MCU control gate-controlled switch K2 closures, to suppress transmitting terminal power frequency whole
Surge current on stream filter circuit during electricity；
S4：After the second Preset Time of time delay, transmitting terminal MCU output pwm control signals, and controlled output frequency is gain
Minima, output duty cycle are gradually increased to default dutycycle to suppress LC resonance inversions within the unit interval according to predetermined ratio
Circuit powered on moment produce surge current, afterwards transmitting terminal MCU further control gate-controlled switch K1 closure.
S5：Receiving terminal MCU control BUCK mu balanced circuits are closed, and transmitting terminal MCU judges whether to receive receiving terminal communication letter
Number, in this way, then S5 is performed, if not, performing S7；
S6：According to signal of communication, transmitting terminal MCU judges whether the voltage at wireless receiving end is more than preset voltage value, in this way,
S7 is performed then；If not, return performing S5；
S7：Receiving terminal MCU control BUCK start, and transmitting terminal MCU adjusts output frequency to predeterminated frequency value；
S8：Transmitting terminal MCU controlled outputs frequency is gain minima respective frequencies, and is in radio energy transmission system
Resting state；
S9：It is back to S2 steps.
Further above-mentioned steps are illustrated：The transmitting terminal MCU control processes that gradually increase of PWM duty cycle can be：Such as
Initial dutycycle is 10%, is changed into 20% through unit interval control dutycycle, and so on until dutycycle to 50%
Fully open, can so make the energy Jing inverter circuits of wireless transmitting terminals gradually be transferred to receiving terminal, suppress LC resonance circuits, connect
The surge current that receiving end rectifier filter circuit powered on moment is produced.
Meanwhile, referring to Fig. 4, it is gain and output frequency graph of a relation.Wherein, in the graph of a relation, the corresponding values of f1 are as rised in value
Minima, the corresponding gains of fo are gain maximum, operationally, by FREQUENCY CONTROL between f0-f1 be normal work
Scope.Illustrated by the graph of a relation：PWM is transferred to into corresponding frequency f1 of gain minimum first after electricity on transmitting terminal MCU, is subtracted
Output gain during little underloading；First block BUCK mu balanced circuits simultaneously on receiving terminal MCU after electricity, and pass through sampling wireless receiving terminal
Voltage determine whether wireless receiving terminal voltage whether higher than preset voltage value, if within the normal range, receiving terminal MCU controls
BUCK mu balanced circuits processed are opened, and the PWM controls frequency of transmitting terminal MCU is transferred to f2, and the f2 is predeterminated frequency value.
In addition, in the step of above-mentioned S2, specially：Whether sensor real-time detection wireless receiving end moves into working region
It is interior, and induced signal is formed, to send into transmitting terminal MCU, according to the induced signal, transmitting terminal MCU judges that wireless receiving end is
In the working region of no entrance wireless transmitting terminals.
With reference to Fig. 3 and Fig. 4, the wireless power transmission control method of the present invention is further illustrated：
S1：For electricity on radio energy transmission system；
S2：Whether sensor real-time detection wireless receiving end is moved in working region, and forms induced signal, to send extremely
In transmitting terminal MCU, according to the induced signal, transmitting terminal MCU judges whether wireless receiving end enters the working region of wireless transmitting terminals
It is interior, in this way, then perform S3；If not, returning S1；
S3：After the first preset time t of time delay 1, transmitting terminal MCU control gate-controlled switch K2 closures；
S4：After the second Preset Time of time delay, transmitting terminal MCU output pwm control signals, and controlled output frequency is gain
Minima, output duty cycle are gradually increased to default dutycycle to suppress LC resonance inversions within the unit interval according to predetermined ratio
Circuit powered on moment produce surge current, afterwards transmitting terminal MCU further control gate-controlled switch K1 closure.
S5：Receiving terminal MCU control BUCK mu balanced circuits are closed, and transmitting terminal MCU judges whether to receive receiving terminal communication letter
Number, in this way, then S6 is performed, if not, performing S8；
S6：According to signal of communication, transmitting terminal MCU judges whether the voltage at wireless receiving end is more than preset voltage value, in this way,
S7 is performed then；If not, return performing S5；
S7：Receiving terminal MCU control BUCK start, and transmitting terminal MCU adjusts output frequency to predeterminated frequency value；
S8：Transmitting terminal MCU controlled outputs frequency is gain minima respective frequencies, and is in radio energy transmission system
Resting state；
S9：It is back to S2 steps.
Claims (6)
1. a kind of radio energy transmission system, including the wireless transmitting terminals for being connected to electrical network, and can receive wireless transmitting terminals electricity
The wireless receiving end of energy, wireless transmitting terminals include the transmitting coil that can transmit radio energy, and can receive the logical of communication signal
Letter receiver module；Connect load outside wireless receiving end, including the receiving coil of launching electric energy in transmitting coil can be received, and can be by
Receiving coil output electric energy is converted into communication signal and transmits to the communication transmitter module of communication receipt module, it is characterised in that：
Wireless transmitting terminals also include industrial frequency rectifying filter circuit, and the outfan of industrial frequency rectifying filter circuit is connected with inverter circuit,
Transmitting coil connects the outfan of inverter circuit, be provided with transmitting coil can induced emission coil and receiving coil position sensing
Device, sensor form induced signal according to transmitting coil with receiving coil distance, and sensor is connected with transmitting terminal MCU, to receive
The induced signal that sensor is formed, and judge wireless receiving end whether in working region according to the induced signal；
Wireless transmitting terminals also include the soft starting circuit for being arranged on industrial frequency rectifying filter circuit input, the input of soft starting circuit
End connection electrical network, transmitting terminal MCU are electrically connected the control end of soft starting circuit, to control the startup of soft starting circuit.
2. radio energy transmission system according to claim 1, it is characterised in that：Soft starting circuit includes being connected to electrical network
Power resistor R1, be parallel to the gate-controlled switch K1 of power resistor R1, be series at power resistor R1 and gate-controlled switch K1 and controllable
Switch K2, wherein transmitting terminal MCU connect the control end of gate-controlled switch K1 and gate-controlled switch K2, gate-controlled switch K1 and gate-controlled switch K2
It is normally closed switch.
3. radio energy transmission system according to claim 1 and 2, it is characterised in that：The receiving coil at wireless receiving end
Rectifier filter circuit is connected with, the outfan of rectifier filter circuit is connected with receiving terminal MCU and BUCK mu balanced circuit,
Digital data transmission after conversion is formed communication signal to the transmitter module that communicates by receiving terminal MCU connection communication transmitter modules,
While the connection BUCK mu balanced circuits of receiving terminal MCU；Connect load outside BUCK mu balanced circuits.
4. radio energy transmission system according to claim 3, it is characterised in that：Being provided with receiving coil to strengthen biography
The mark of sensor sensing.
5. a kind of wireless power transmission control method, usage right require any one radio energy transmission system in 1-4, its feature
It is to comprise the following steps：
S1：For electricity on radio energy transmission system；
S2：Whether detection wireless receiving end is moved in the working region of wireless transmitting terminals, in this way, then performs S3；If not, returning
S1；
S3：After the first Preset Time of time delay, transmitting terminal MCU control gate-controlled switch K2 closures, to suppress transmitting terminal industrial frequency rectifying to filter
Surge current on wave circuit during electricity；
S4：After the second Preset Time of time delay, transmitting terminal MCU output pwm control signals, and controlled output frequency is that gain is minimum
Value, output duty cycle are gradually increased to default dutycycle to suppress LC resonance inversion circuits within the unit interval according to predetermined ratio
Powered on moment produce surge current, afterwards transmitting terminal MCU further control gate-controlled switch K1 closure；
S5：Receiving terminal MCU control BUCK mu balanced circuits are closed, and transmitting terminal MCU judges whether to receive receiving terminal signal of communication, such as
It is then to perform S5, if not, performing S7；
S6：According to signal of communication, transmitting terminal MCU judges that the voltage at wireless receiving end, whether more than preset voltage value, in this way, is then held
Row S7；If not, return performing S5；
S7：Receiving terminal MCU control BUCK start, and transmitting terminal MCU adjusts output frequency to predeterminated frequency value；
S8：Transmitting terminal MCU controlled outputs frequency is gain minima respective frequencies, and makes radio energy transmission system be in dormancy
State；
S9：It is back to S2 steps.
6. wireless power transmission control method according to claim 5, it is characterised in that：In the step of S2, specially：
Whether sensor real-time detection wireless receiving end is moved in working region, and is formed induced signal and sent into transmitting terminal MCU, is sent out
Penetrate end MCU and judge whether wireless receiving end is entered in the working region of wireless transmitting terminals according to the induced signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611103025.XA CN106532978B (en) | 2016-12-05 | 2016-12-05 | Wireless power transmission system and wireless power transmission control method |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201611103025.XA CN106532978B (en) | 2016-12-05 | 2016-12-05 | Wireless power transmission system and wireless power transmission control method |
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| CN106532978A true CN106532978A (en) | 2017-03-22 |
| CN106532978B CN106532978B (en) | 2023-07-11 |
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| CN108900106A (en) * | 2018-07-06 | 2018-11-27 | 中国核动力研究设计院 | A method of eliminating the current fluctuation of control rod drive mechanism power supply unit |
| CN109391046A (en) * | 2018-12-21 | 2019-02-26 | 伏诺瓦(天津)科技有限公司 | Wireless power supply based on Surge Protector |
| CN111740509A (en) * | 2020-06-19 | 2020-10-02 | 青岛鲁渝能源科技有限公司 | Wireless charging method and system based on voltage regulation control |
| CN112751394A (en) * | 2020-12-29 | 2021-05-04 | 宁波道充科技有限公司 | High-power wireless charging system and method suitable for battery load |
| CN113328614A (en) * | 2021-05-31 | 2021-08-31 | 无锡先导智能装备股份有限公司 | Soft start-stop control method and device, electronic equipment and storage medium |
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| Publication number | Publication date |
|---|---|
| CN106532978B (en) | 2023-07-11 |
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