WO2020119482A1 - 发射端、接收端、无线充电系统及无线充电方法 - Google Patents

发射端、接收端、无线充电系统及无线充电方法 Download PDF

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Publication number
WO2020119482A1
WO2020119482A1 PCT/CN2019/122006 CN2019122006W WO2020119482A1 WO 2020119482 A1 WO2020119482 A1 WO 2020119482A1 CN 2019122006 W CN2019122006 W CN 2019122006W WO 2020119482 A1 WO2020119482 A1 WO 2020119482A1
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WIPO (PCT)
Prior art keywords
receiving end
mcu
charging
communication module
information
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PCT/CN2019/122006
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English (en)
French (fr)
Inventor
赵毓斌
何发瑛
须成忠
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Shenzhen Institute of Advanced Technology of CAS
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Shenzhen Institute of Advanced Technology of CAS
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/60—Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries for charging batteries from AC mains by converters

Definitions

  • the invention relates to the technical field of wireless charging, in particular to a transmitting end, a receiving end, a wireless charging system and a wireless charging method.
  • Wireless charging technology is currently a hot spot in energy research.
  • wireless charging technologies including electromagnetic induction, magnetic resonance coupling and microwave.
  • the magnetic induction technology based on QI is relatively simple to realize the circuit. Now it has been able to charge multiple devices at the same time.
  • the electromagnetic induction wireless charging technology is simple to implement and has a high conversion rate, due to the limitation of the charging distance of its charging method, the receiving coil and the transmitting coil must face each other, and there is a defect in space movement.
  • the existing electromagnetic induction wireless charging device does not have the function of a detection device. No matter whether there is a device within the rechargeable range, it must continue to be in a working state, causing energy loss.
  • the magnetic resonance coupled wireless charging technology is not as mature as the electromagnetic induction wireless charging technology, it can be used to wirelessly charge devices at a distance of more than ten centimeters from the system, which is an important research direction for wireless charging technology in the future. Although there are not many products of this type of wireless charging technology, they also do not have certain control on the system. The system must always be in a working state. When a device comes in, it is charged when it is not fully charged, which is extremely wasteful of resources.
  • the invention provides a transmitting end, a receiving end, a wireless charging system and a wireless charging method.
  • the existing wireless charging technology on the market requires the wireless charging device to continue to be in a working state, resulting in a waste of resources.
  • the present invention provides a transmitter, which is applied to a wireless charging system, and includes a signal generation circuit, a transmitter coil, and a power supply.
  • the transmitter also includes:
  • the first communication module is used to receive device information, charging request and charging status information sent by the receiving end of the wireless charging system;
  • the switch circuit is electrically connected to the signal generating circuit and the power supply respectively, and is used to turn on or off the power supply of the signal generating circuit;
  • the detection circuit is electrically connected to the transmitting coil and is used to detect the phase change information of the transmitting coil
  • the first MCU is electrically connected to the first communication module, the switch circuit, the detection circuit, and the power supply, respectively, and is used to control the power supply of the switch circuit on signal generation circuit according to the charging request after registering the receiving end according to the device information, And according to the state of charge information and phase change information, the signal generation circuit is controlled to be powered on and off.
  • the first MCU is also used to control the first communication module to send a prompt message to the receiving end when confirming that the receiving end is not in the charging area according to the charging state information and the phase change information.
  • the present invention also provides a receiving end, which is applied to a wireless charging system, and includes a receiving coil, a rectifying and voltage stabilizing circuit, and a power source to be charged.
  • the receiving end further includes:
  • the second communication module is used to send its own device information and charging request to the transmitter of the wireless charging system.
  • the second MCU is electrically connected to the power source to be charged and the second communication module, and is used to detect the charging state information of the power source to be charged and control the second communication module to send the charging state information to the transmitting end.
  • the receiving end further includes an output module, which is electrically connected to the second MCU, and the second communication module is further used to receive the prompt information sent by the transmitting end and forward it to the second MCU.
  • the second MCU also uses The control output module outputs display prompt information.
  • the present invention also provides a wireless charging system, which includes one of the above-mentioned transmitting end and one of the above-mentioned receiving end.
  • the present invention also provides a wireless charging method, which is applied to the transmitting end of a wireless charging system.
  • the transmitting end includes a signal generating circuit, a transmitting coil, a power supply, a first communication module, a switching circuit, a detection circuit, and a first One MCU; wireless charging methods include:
  • the first communication module After the first communication module establishes a communication connection with the receiving end of the wireless charging system, it receives the charging request sent by the receiving end and forwards it to the first MCU;
  • the first MCU controls the power supply of the switch-on signal generation circuit according to the charging request
  • the signal generating circuit generates an excitation signal and sends it to the transmitting coil.
  • the transmitting coil generates resonance according to the exciting signal and radiates energy outward;
  • the first communication module receives the charging state information sent by the receiving end and forwards it to the first MCU, and the detection circuit detects the phase change information of the transmitting coil and sends it to the first MCU;
  • the first MCU determines whether the receiving end is in the charging area according to the charging state information and the phase change information
  • the first MCU controls the switch circuit to cut off the power supply of the signal generating circuit.
  • the method before the step of receiving the charging request sent by the receiving end and forwarding it to the first MCU, the method further includes:
  • the first communication module receives the device information sent by the receiving end, and forwards the device information to the first MCU;
  • the first MCU registers the receiving end according to the device information and recognizes the type of the receiving end, and then controls the first communication module to feed back prompt information to the receiving end according to the type of the receiving end, to prompt the user to place the receiving end in the charging area.
  • the step of the first MCU judging whether the receiving end is in the charging area according to the charging state information and the phase change information includes:
  • phase change information confirms that the transmitting coil obviously has a phase change, confirm that the receiving end is in the charging area
  • a prompt message is sent to the receiving end to remind the user that the receiving end is at the edge of the charging area.
  • the method further includes:
  • the first communication module receives the power full signal fed back by the receiving end and sends it to the first MCU;
  • the first MCU controls the switch circuit to cut off the power supply of the signal generating circuit.
  • the method further includes:
  • the first MCU controls the first communication module to send a prompt message to the receiving end to remind the user that the receiving end has left the charging area ;
  • the first MCU controls the switch circuit to cut off the power supply of the signal generating circuit.
  • the present invention also provides a wireless charging method, which is applied to the receiving end of the wireless charging system, the receiving end includes a receiving coil, a rectifying and voltage stabilizing circuit, a power source to be charged, a second communication module, and a second MCU;
  • the characteristic is that the wireless charging method includes:
  • the second communication module After the second communication module establishes a communication connection with the transmitter of the wireless charging system, it sends a charging request to the transmitter;
  • the receiving coil receives the energy sent by the transmitter and converts it into direct current through a rectifying and stabilizing circuit to charge the charging power supply;
  • the second MCU detects the charging state information of the power source to be charged, and controls the second communication module to send the charging state information to the transmitting end.
  • the second MCU further includes:
  • the second MCU When the second MCU detects that the power supply to be charged is fully charged, it controls the second communication module to send a full charge signal to the transmitter.
  • the receiving end further includes an output module; the method further includes:
  • the second communication module receives the prompt information sent by the transmitter and forwards it to the second MCU;
  • the second MCU control output module outputs display prompt information.
  • the method before the step of sending a charging request to the transmitter, the method further includes:
  • the second MCU When the second MCU obtains the power information of the power source to be charged, and confirms that the power source to be charged needs to be charged according to the power information, it controls the second communication module to send its own device information to the transmitter.
  • the present invention confirms whether a device is connected to the wireless charging system through the charging state information fed back by the receiving end of the wireless charging system received by the first communication module and the phase change information obtained by the detection circuit detecting the transmitting coil Charging, if there is, the transmitter control signal generation circuit starts to work, thereby charging the device, if not, the transmitter control cuts off the power supply of the signal generation circuit, thereby avoiding the continuous energy generation of the signal generation circuit and causing waste of energy, making this
  • the user experience of wireless charging technology has been improved.
  • FIG. 1 is a schematic diagram of an embodiment of a transmitting end of the present invention
  • FIG. 2 is a schematic diagram of a frame of an embodiment of a receiving end of the present invention.
  • FIG. 3 is a schematic diagram of an embodiment of a wireless charging system of the present invention
  • FIG. 5 shows a schematic flowchart of a second embodiment of the wireless charging method of the present invention
  • FIG. 6 shows a schematic flowchart of a third embodiment of the wireless charging method of the present invention.
  • FIG. 7 shows a schematic flowchart of a fourth embodiment of the wireless charging method of the present invention.
  • FIG. 8 shows a schematic flowchart of a first embodiment of another wireless charging method of the present invention.
  • FIG. 9 shows a schematic flowchart of a second embodiment of another wireless charging method of the present invention.
  • FIG. 10 shows a schematic flowchart of a third embodiment of another wireless charging method of the present invention.
  • the transmitting end and the receiving end disclosed in the present invention are applied to a wireless charging system based on the magnetic resonance type.
  • the magnetic resonance type is based on the principle of magnetic induction.
  • the transmitting end radiates energy, and the LC circuit of the receiving end is the same.
  • the natural frequency of the resonance is achieved, thereby achieving energy reception. In this way, the transmission distance can reach more than ten centimeters. In a certain space, the device can move freely without being restricted.
  • Figure 1 shows an embodiment of the transmitting end of the present invention.
  • the transmitting end includes a power supply 10, a switching circuit 11, a signal generating circuit 12, a transmitting coil 13, a first communication module 14, a first MCU 15 and a detection circuit 16.
  • the power supply 10 is electrically connected to the switch circuit 11 for powering the transmitting end
  • the switch circuit 11 is electrically connected to the signal generating circuit 12 for turning on or off the power supply of the signal generating circuit 12
  • the signal generating circuit 12 Electrically connected to the transmitting coil 13 for generating an excitation signal and sending the exciting signal to the transmitting coil 13
  • the transmitting coil 13 resonates according to the exciting signal and radiates energy outward
  • the first communication module 14 is used to receive a wireless charging system
  • the device information, charging request and charging status information sent by the receiving end of the device are electrically connected to the transmitting coil 13 to detect the phase change information of the transmitting coil 13.
  • the first MCU 15 is connected to the power supply 10, the switching circuit 11, and the first A communication module 14 and a detection module 16 are electrically connected to control the switch circuit 11 to turn on the power of the signal generating circuit 12 according to the charging request after registering the receiving end according to the device information, and control the signal generation according to the charging state information and phase change information
  • the circuit 12 is powered on and off.
  • the signal generating circuit 12 when charging is not started, the signal generating circuit 12 is in a cut-off state, and the first communication module 14 and the first MCU 15 are in a standby state, thereby putting the transmitting end in a low power consumption state as a whole, when the first communication module 14
  • the first MCU 15 registers the receiving end according to the device information, and then controls the switch circuit 11 to turn on the power of the signal generating circuit 12 according to the charging request
  • the signal generating circuit 12 starts to work, generates an excitation signal, and sends the excitation signal to the transmitting coil 13, after receiving the exciting signal, the transmitting coil 13 resonates according to the exciting signal, thereby radiating energy outward, receiving
  • the receiving coil at the end can realize resonance at the same natural frequency, thereby achieving energy reception.
  • the detection circuit 16 starts to detect the phase change information of the transmitting coil 13 and sends it to the first MCU 15.
  • the first communication module 14 receives the charging state information fed back by the receiving end and forwards it to the first MCU 15 ,
  • the first MCU15 can confirm whether the receiving end needs to be charged according to the charging state information and the phase change information. If it is, the first MCU15 control signal generation circuit 12 continues to be energized to charge, if not, the first MCU15 control signal
  • the generating circuit 12 is powered off to prevent the signal generating circuit 12 from performing meaningless energy consumption, and the first communication module 14 and the first MCU 15 perform the standby state again, thereby causing the transmitter to enter the low power consumption state again.
  • the charging state information includes the power change of the power source to be charged at the receiving end
  • the phase change information includes the phase change value of the transmitting coil.
  • the first MCU 15 can confirm whether the receiving end needs to be charged according to the charging state information and the phase change information The specific process is:
  • the device information includes type information of the receiving end, and different types of receiving ends correspond to different charging areas. Therefore, further, after registering the receiving end according to the device information, the first MCU 15 also needs to identify the type of the receiving end according to the device information, and then controls the first communication module 14 to feed back prompt information to the receiving end according to the type of the receiving end, to prompt the user to receive the reception The terminal is placed in the charging area.
  • the signal generating circuit 12 includes a signal generator and a power amplifier.
  • the signal generator is used to generate an excitation signal
  • the power amplifier is used to amplify the power of the excitation signal, thereby improving the energy conversion rate and the transmission distance.
  • the detection circuit 16 detects the phase change information of the transmitting coil 13 specifically as follows: the detecting circuit 16 first obtains the excitation signal generated by the signal generating circuit 12, and then obtains the signal to be measured after the excitation signal passes through the transmitting coil 13, and analyzes the excitation The signal and the signal to be measured, thereby obtaining phase change information.
  • the switch circuit 11 is a relay circuit, and the working state of the transistor is controlled by the first MCU 15 as the on-off of the control relay, thereby turning on and off the control signal generating circuit.
  • the first communication module 14 is preferably Bluetooth low energy. It should be understood that other devices that can replace Bluetooth low energy and implement wireless communication also fall within the protection scope of the present invention.
  • the charging status information fed back by the receiving end of the wireless charging system received by the first communication module and the phase change information obtained by the detection circuit detecting the transmitting coil are used to confirm whether a device is connected to the wireless charging system for charging.
  • the transmitter control signal generation circuit starts to work to charge the device, if not, the transmitter controls the power supply of the signal generation circuit, which realizes the function of detecting the receiving end of the wireless charging system, thereby avoiding the continuous operation of the signal generation circuit This wastes energy and improves the user experience of this wireless charging technology.
  • the first communication module 14 continues to receive the charging status information fed back by the receiver, and the detection circuit 16 continuously detects the transmitter coil 13 Phase change information. Then, when the first MCU 15 confirms that the receiving end is not in the charging area based on the charging status information and the phase change information, it controls the first communication module to send a prompt message to the receiving end to remind the user whether the receiving end has moved to the charging area outside.
  • the first MCU 15 controls the first communication module to send a prompt message to the receiving end, and after a preset time interval, the user still does not put the receiving end back within the charging area, the first MCU 15 controls the switch circuit 11 to cut off the signal The power supply of the circuit 12 occurs to avoid wasting energy.
  • FIG. 2 shows an embodiment of the receiving end of the present invention.
  • the receiving end includes a receiving coil 20, a rectifying and stabilizing circuit 21, a power source to be charged 22, a second MCU 23, and a second communication module 24 that are electrically connected in sequence.
  • the receiving coil 20 is used to receive the energy sent from the transmitting end of the wireless charging system to the outside
  • the rectifying and voltage stabilizing circuit 21 is used to convert the energy received by the receiving coil 20 into direct current to charge the charging power source 22,
  • the second communication module 24 Used to send its own device information and charging request to the transmitter of the wireless charging system.
  • the device information includes the type information of the receiver itself. Different types of receivers have different charging areas.
  • the second MCU 23 is used to detect Charging state information of the charging power source 22, and controlling the second communication module 24 to send the charging state information to the transmitting end.
  • the second communication module 24 is preferably Bluetooth low energy. It should be understood that other devices that can replace Bluetooth low energy and realize wireless communication also fall within the protection scope of the present invention.
  • the receiving coil 20 starts to receive the energy sent by the transmitting end, and converts the energy into a chargeable one through the rectifying and stabilizing circuit 21
  • the DC power is used to charge the power source 22 to be charged.
  • the second MCU 23 continuously detects the charging state information of the power source 22 to be charged, and controls the second communication module 24 to send the charging state information to the transmitter.
  • the second MCU 23 continuously detects the charging state information of the power source 22 to be charged, and feeds back to the transmitting end, thereby facilitating the transmitting end to detect whether the receiving end needs to be charged.
  • the receiving end further includes an output module 25, and the second communication module 24 is also used to receive the prompt information sent by the transmitting end And forwarded to the second MCU23, the second MCU23 is also used to control the output module 25 to output display prompt information.
  • the output module 25 includes a display screen and/or a speaker.
  • the output prompt information is output through the output module 25, so that the user is informed of the current charging status in time, and when the charging abnormality occurs, the user is informed and processed in time.
  • FIG. 3 shows an embodiment of the wireless charging system of the present invention.
  • the wireless charging system includes the transmitting terminal 30 described in the foregoing embodiment and the receiving terminal 31 described in the foregoing embodiment. Among them, the wireless communication between the transmitting terminal 30 and the receiving terminal 31 is realized.
  • the transmitting terminal 30 receives the charging request sent by the receiving terminal 31, the transmitting terminal 30 starts to work, and the energy is radiated outward through the transmitting coil of the transmitting terminal 30 through resonance
  • the receiving coil of the receiving end 31 realizes resonance through the same natural frequency to realize energy reception, and then converts the energy into direct current to charge the rechargeable power source.
  • FIG. 4 shows an embodiment of the wireless charging method of the present invention.
  • the wireless charging method is applied to the transmitting end of the wireless charging system.
  • the transmitting end includes a signal generating circuit, a transmitting coil, a power supply, a first communication module, a switching circuit, a detection circuit, and a first MCU.
  • the wireless charging method includes the following steps:
  • Step S1 Receive the charging request sent by the receiving end and forward it to the first MCU.
  • the first communication module and the first MCU are in a standby state, and the signal generating circuit is in a power-off state.
  • the first communication module can receive a communication connection request sent by a receiving end of the wireless charging system, and communicate with The receiving end establishes a communication connection. After the first communication module establishes a communication connection with the receiving end, the first communication module may be used to receive information sent by the receiving end.
  • step S2 the first MCU controls the power supply of the switch-on signal generation circuit according to the charging request.
  • step S3 the signal generating circuit generates an excitation signal and sends it to the transmitting coil.
  • the transmitting coil generates resonance according to the exciting signal and radiates energy outward.
  • the signal generating circuit After the signal generating circuit is energized, it performs a working state, generates an excitation signal and sends it to the transmitting coil, and the transmitting coil resonates according to the exciting signal and radiates energy outward.
  • step S4 the first communication module receives the charging state information sent by the receiving end and forwards it to the first MCU, and the detection circuit detects the phase change information of the transmitting coil and sends it to the first MCU.
  • the charging state information includes a change in the amount of power of the power source to be charged at the receiving end
  • the phase change information includes the phase change of the transmitting coil
  • Step S5 The first MCU determines whether the receiving end is in the charging area according to the charging state information and the phase change information. If yes, go to step S6; if no, go to step S7.
  • the receiving end is in the charging area according to the power change of the power source to be charged and the phase change of the transmitting coil at the receiving end.
  • Step S6 the first MCU control signal generating circuit is continuously powered on.
  • the first MCU controls the switch circuit to continuously turn on the power supply of the signal generating circuit, thereby ensuring that the signal generating circuit continues to work, and thus ensuring that the power supply to be charged at the receiving end is continuously charged.
  • step S7 the first MCU controls the switch circuit to cut off the power supply of the signal generating circuit.
  • the first MCU controls the switch circuit to cut off the power supply of the signal generating circuit, and the signal generating circuit stops working.
  • the charging status information fed back by the receiving end of the wireless charging system received by the first communication module and the phase change information obtained by the detection circuit detecting the transmitting coil are used to confirm whether a device is connected to the wireless charging system for charging.
  • the transmitter control signal generation circuit starts to work to charge the device, if not, the transmitter controls the power supply of the signal generation circuit, which realizes the function of detecting the receiving end of the wireless charging system, thereby avoiding the continuous operation of the signal generation circuit This wastes energy and improves the user experience of this wireless charging technology.
  • step S1 Before step S1, it also includes:
  • step S10 the first communication module receives the device information sent by the receiving end, and forwards the device information to the first MCU.
  • the first communication module receives the device information sent by it and forwards it to the first MCU.
  • step S11 the first MCU registers the receiving end according to the device information and recognizes the type of the receiving end, and then controls the first communication module to feed back the prompt information to the receiving end according to the type of the receiving end to prompt the user to place the receiving end in the charging area.
  • the first MCU registers the receiving end according to the device information, identifies the type of the receiving end, and then determines the type of the receiving end.
  • the type of the terminal confirms its chargeable charging area, and sends prompt information to the receiving end according to the charging area, thereby prompting the user to place the receiving end in the charging area.
  • the charging area of each type of receiving end may be preset and stored in the first MCU.
  • the type of the receiving end is confirmed to obtain the range of its charging area, and then the receiving end is notified, and the receiving end prompts the customer to charge the current charging area of the receiving end, so as to avoid the customer moving the device outside the charging area and causing the charging process to be interrupted.
  • step S5 specifically includes three cases:
  • a prompt message is sent to the receiving end to remind the user that the receiving end is at the edge of the charging area.
  • the receiving end when the receiving end is at the edge position of the charging area, the receiving end can receive a very small part of the energy radiated outward from the transmitting end, and convert this part of the energy into direct current for the receiving end to be charged
  • the power supply is charged, but the phase change of the transmitting coil is very small at this time, resulting in the situation that there is power input at the receiving end and the phase change of the transmitting coil is not significantly changed.
  • a prompt message is sent To the receiving end, to remind the user that the receiving end is at the edge of the charging area.
  • step S6 it also includes:
  • step S20 the first communication module receives the power full signal fed back by the receiving end and sends it to the first MCU.
  • step S21 the first MCU controls the switch circuit to cut off the power supply of the signal generating circuit.
  • the first MCU controls the switch circuit to cut off the power supply of the signal generating circuit, thereby stopping the charging operation, and avoiding the signal generating circuit to continue to work and waste energy.
  • step S6 it also includes:
  • Step S30 when it is confirmed according to the charging state information that there is no power input at the receiving end, and it is confirmed according to the phase change information that there is no obvious phase change in the transmitting coil, the first MCU controls the first communication module to send a prompt message to the receiving end to remind the user that the receiving end has Leave the charging area.
  • the first communication module still continues to receive the charging state information fed back by the receiving end, and the detection module continuously detects the phase change information of the transmitting coil.
  • the charging state information is used Confirm that there is no power input at the receiving end, and confirm that there is no obvious phase change in the transmitting coil according to the phase change information, then the receiving end has left the charging area, so the first MCU controls the first communication module to send a prompt message to the receiving end to remind The user receiving end has left the charging area.
  • Step S31 After the interval is preset, if the receiving end has not re-entered the charging state, the first MCU controls the switch circuit to cut off the power supply of the signal generating circuit.
  • the preset duration is preset.
  • the first MCU controls the switch circuit to cut off the power supply of the signal generating circuit.
  • the receiving end after the receiving end enters the charging state, if it is confirmed that there is no power input at the receiving end according to the charging state information, and that there is no obvious phase change in the transmitting coil according to the phase change information, it means that the receiving end has left the charging area. At this time, Send a prompt message to the receiver to remind the user that the receiver has left the charging area. If you want to continue charging, you need to put the receiver back in the charging area to avoid the interruption of the charging process due to the user's unconscious operation. Further, after the preset interval of time, if the receiving end has not yet re-entered the charging state, the first MCU controls the switch circuit to cut off the power supply of the signal generation circuit, thereby avoiding energy waste caused by continuous operation of the signal generation circuit.
  • FIG. 8 shows another embodiment of the wireless charging method of the present invention.
  • the wireless charging method is applied to a receiving end of a wireless charging system.
  • the receiving end includes a receiving coil, a rectifying and voltage stabilizing circuit, a power source to be charged, a second communication module, and a second MCU.
  • the wireless charging method includes:
  • Step S40 Send a charging request to the transmitter.
  • the second communication module may send a communication connection request to the transmitter of the wireless charging system and establish a communication connection with the transmitter. After the second communication module establishes a communication connection with the receiver, when the power source to be charged needs to be charged, The second communication module can be used to send a charging request to the transmitter.
  • step S41 the receiving coil receives the energy sent by the transmitting end and converts it into direct current through a rectifying and stabilizing circuit to charge the charging power source.
  • step S42 the second MCU detects the charging state information of the power source to be charged, and controls the second communication module to send the charging state information to the transmitting end.
  • the second communication module sends a charging request to the transmitter of the wireless charging system. After the transmitter responds to the charging request, charging can be started.
  • the method further includes:
  • Step S50 When the second MCU detects that the power source to be charged is fully charged, it controls the second communication module to send a full charge signal to the transmitter.
  • the second MCU continuously detects the charging state of the power supply to be charged, and when the power supply to be charged is fully charged, controls the second communication module to send a power full signal to the transmitting end, thereby reminding the transmitting end that the charging has been charged When finished, the charging operation can be stopped.
  • the receiving end further includes an output module.
  • the wireless charging method can also receive the prompt information sent by the transmitting end through the second communication module and forward it to the second MCU.
  • the second MCU control output module outputs display prompt information.
  • the prompt message is sent to the outside through the output module in time to remind the user that the receiving end is currently in an abnormal charging state, so that the user can make timely adjustments.
  • step S40 it also includes:
  • step S60 the second MCU obtains the power information of the power source to be charged, and confirms that the power source to be charged needs charging according to the power information, and controls the second communication module to send its own device information to the transmitter.
  • the power information of the power source to be charged is obtained by the second MCU. Based on the power information, the second MCU can confirm whether the power source to be charged needs to be charged. When the power source to be charged needs to be charged, the second MCU controls the second communication module Send your own device information to the transmitter. When the power supply to be charged does not need to be charged, you do not need to send device information and charging request to the transmitter.
  • a preset power threshold may also be set.
  • the second MCU confirms that the power source to be charged does not need to be charged at present.
  • the second MCU confirms that the power source to be charged currently needs to be charged.

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Abstract

本发明公开了一种发射端、接收端、无线充电系统及方法，该发射端包括第一通信模块，用于接收接收端发送的充电请求和充电状态信息；开关电路，分别与信号发生电路、电源电性连接，用于接通或切断信号发生电路的供电；检测电路，与发射线圈电性连接，用于检测发射线圈的相位变化信息；第一MCU，分别与第一通信模块、开关电路、检测电路、电源电性连接，用于根据充电请求控制开关电路接通信号发生电路的供电，并根据充电状态信息和相位变化信息控制信号发生电路的通电和断电。本发明通过第一通信模块接收到的反馈信息和检测模块检测到的相位变化信息确认是否需要进行充电，当需要充电时，发射端才控制信号发生电路工作，从而降低了能量的损耗。

Description

发射端、接收端、无线充电系统及无线充电方法 技术领域
本发明涉及无线充电技术领域，尤其涉及一种发射端、接收端、无线充电系统及无线充电方法。
背景技术
无线充电技术，是目前对能源研究的一大热点，目前市场上研究较为繁多的无线充电技术，包括有电磁感应式、磁共振耦合式和微波式，其中，主打的无线充电技术大部分采用了以QI为标准的磁感应技术，该技术实现电路比较简单，现在已经做到可对多个设备同时进行充电。
但是，电磁感应无线充电技术虽然实现简单，转换率高，但是由于其充电方式的充电距离的局限性，接收线圈和发射线圈必须正对着，在空间移动上存在缺陷。除此之外，现有的电磁感应无线充电设备，不带有检测设备功能，不管有没有设备在可充电范围内都必须持续处于工作状态，造成能量的损失。磁共振耦合无线充电技术虽还不如电磁感应式无线充电技术成熟，但由于可以使设备离系统十几厘米的距离进行无线充电，是以后无线充电技术的重要研究方向。该类型的无线充电技术目前产品虽不多，都是同样并没有对系统进行一定的控制，系统必须一直处于工作状态，当有设备进来，不满电则充电，这样极其浪费资源。
发明内容
本发明提供了一种发射端、接收端、无线充电系统及无线充电方法，现有市场上的无线充电技术需要无线充电设备持续处于工作状态，造成资源浪费的问题。
为了解决上述问题，本发明提供了一种发射端，其应用于无线充电系统，其包括信号发生电路、发射线圈和电源，发射端还包括：
第一通信模块，用于接收无线充电系统的接收端发送的设备信息、充电请求和充电状态信息；
开关电路，分别与信号发生电路、电源电性连接，用于接通或切断信号发生电路的供电；
检测电路，与发射线圈电性连接，用于检测发射线圈的相位变化信息；
第一MCU，分别与第一通信模块、开关电路、检测电路、电源电性连接，用于根据所述设备信息注册所述接收端后，根据充电请求控制开关电路接通信号发生电路的供电，并根据充电状态信息和相位变化信息控制信号发生电路的通电和断电。
作为本发明的进一步改进，第一MCU还用于根据充电状态信息和相位变化信息确认接收端未处于充电区域时，控制第一通信模块发送提示信息至接收端。
为了解决上述问题，本发明还提供了一种接收端，其应用于无线充电系统，其包括接收线圈、整流稳压电路和待充电电源，接收端还包括：
第二通信模块，用于发送自身的设备信息和充电请求至无线充电系统的发射端。
第二MCU，与待充电电源、第二通信模块电性连接，用于检测待充电电源的充电状态信息，并控制第二通信模块发送充电状态信息至发射端。
作为本发明的进一步改进，接收端还包括输出模块，与所述第二MCU电性连接，第二通信模块还用于接收发射端发送的提示信息并转发至第二MCU，第二MCU还用于控制输出模块输出显示提示信息。
为了解决上述问题，本发明还提供了一种无线充电系统，其包括上述之一的发射端和上述之一的接收端。
为了解决上述问题，本发明还提供了一种无线充电方法，其应用于无线充电系统的发射端，发射端包括信号发生电路、发射线圈、电源、第一通信模块、开关电路、检测电路和第一MCU；无线充电方法包括：
第一通信模块与无线充电系统的接收端建立通信连接后，接收接收端发送的充电请求，并转发至第一MCU；
第一MCU根据充电请求控制开关电路接通信号发生电路的供电；
信号发生电路生成激励信号，并发送至发射线圈，发射线圈根据激励信号产生谐振，并向外辐射能量；
第一通信模块接收接收端发送的充电状态信息，并转发至第一MCU，且检测电路检测发射线圈的相位变化信息，并发送至第一MCU；
第一MCU根据充电状态信息和相位变化信息判断接收端是否处于充电区域；
若是，则第一MCU控制信号发生电路持续通电；
若否，则第一MCU控制开关电路切断信号发生电路的供电。
作为本发明的进一步改进，接收接收端发送的充电请求，并转发至第一MCU的步骤之前，还包括：
第一通信模块接收到接收端发送的设备信息，并将设备信息转发至第一MCU；
第一MCU根据设备信息注册接收端，并识别接收端的类型，再根据接收端的类型控制第一通信模块反馈提示信息至接收端，以提示用户将接收端放置于充电区域。
作为本发明的进一步改进，第一MCU根据充电状态信息和相位变化信息判断接收端是否处于充电区域的步骤包括：
当根据充电状态信息确认接收端有电量输入，且根据相位变化信息确认发射线圈明显发生相位变化时，确认接收端处于充电区域；
当根据充电状态信息确认接收端无电量输入，且根据相位变化信息确认发射线圈未明显发生相位变化时，确认接收端未处于充电区域；
当根据充电状态信息确认接收端有电量输入，且根据相位变化信息确认发射线圈未明显发生相位变化时，发送提示信息至接收端，以提醒用户接收端处于充电区域的边缘位置。
作为本发明的进一步改进，第一MCU控制信号发生电路持续通电的步骤之后，还包括：
第一通信模块接收到接收端反馈的电量充满信号，并发送至第一MCU；
第一MCU控制开关电路切断信号发生电路的供电。
作为本发明的进一步改进，第一MCU控制信号发生电路持续通电的步骤之后，还包括：
当根据充电状态信息确认接收端无电量输入，且根据相位变化信息确认发射线圈未明显发生相位变化时，第一MCU控制第一通信模块发送提示信息至接收端，提醒用户接收端已离开充电区域；
间隔预设时长后，若接收端仍未重新进入充电状态，则第一MCU控制开关电路切断信号发生电路的供电。
为了解决上述问题，本发明还提供了一种无线充电方法，其应用于无线充电系统的接收端，接收端包括接收线圈、整流稳压电路、待充电电源、第二通信模块和第二MCU；其特征在于，无线充电方法包括：
第二通信模块与无线充电系统的发射端建立通信连接后，发送充电请求至发射端；
接收线圈接收到发射端发送的能量，并通过整流稳压电路转化为直流电，以对待充电电源充电；
第二MCU检测待充电电源的充电状态信息，并控制第二通信模块发送充电状态信息至发射端。
作为本发明的进一步改进，第二MCU检测待充电电源的充电状态信息的步骤之后，还包括：
第二MCU检测到待充电电源充满电时，控制第二通信模块发送电量充满信号至发射端。
作为本发明的进一步改进，接收端还包括输出模块；方法还包括：
第二通信模块接收发射端发送的提示信息并转发至第二MCU；
第二MCU控制输出模块输出显示提示信息。
作为本发明的进一步改进，发送充电请求至所述发射端的步骤之前，还包括：
第二MCU获取待充电电源的电量信息，并根据电量信息确认待充电电源需要充电时，控制第二通信模块发送自身的设备信息至发射端。
相比于现有技术，本发明通过第一通信模块接收的无线充电系统的接收端反馈的充电状态信息和检测电路检测发射线圈的得到的相位变化信息来确认是否有设备接入该无线充电系统进行充电，若有，则发射端控制信号发生电路开始工作，从而对设备进行充电，若无，则发射端控制切断信号发生电路的供电，从而避免信号发生电路持续工作而造成能源浪费，使得此无线充电技术的用户体验度得到提高。
附图说明
图1为本发明发射端一个实施例的框架示意图；
图2为本发明接收端一个实施例的框架示意图；
图3为本发明无线充电系统一个实施例的框架示意图
图4展示了本发明无线充电方法第一个实施例的流程示意图；
图5展示了本发明无线充电方法第二个实施例的流程示意图；
图6展示了本发明无线充电方法第三个实施例的流程示意图；
图7展示了本发明无线充电方法第四个实施例的流程示意图；
图8展示了本发明另一无线充电方法第一个实施例的流程示意图；
图9展示了本发明另一无线充电方法第二个实施例的流程示意图；
图10展示了本发明另一无线充电方法第三个实施例的流程示意图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
本发明所公开的发射端和接收端应用于基于磁共振式的无线充电系统，磁共振式是基于磁感应原理的基础上，通过LC电路震荡，发射端将能量辐射出去，接收端的LC电路在同样的固有频率实现共振，从而实现能量接收。这种方式传输距离可达十几厘米，在一定的空间里，设备可自由移动不过于受限制。
图1展示了本发明发射端的一个实施例。如图1所示，在本实施例中，该发射端包括电源10、开关电路11、信号发生电路12、发射线圈13、第一通信模块14、第一MCU15和检测电路16。其中，电源10与开关电路11电性连接，用于给发射端供电，开关电路11与所述信号发生电路12电性连接，用于接通或切断信号发生电路12的供电，信号发生电路12与发射线圈13电性连 接，用于产生激励信号，并将激励信号发送至发射线圈13，发射线圈13根据激励信号产生谐振，并向外辐射能量，第一通信模块14用于接收无线充电系统的接收端发送的设备信息、充电请求和充电状态信息，检测模块16与发射线圈13电性连接，用于检测发射线圈13的相位变化信息，第一MCU15分别与电源10、开关电路11、第一通信模块14、检测模块16电性连接，用于根据设备信息注册接收端后，根据充电请求控制开关电路11接通信号发生电路12的供电，并根据充电状态信息和相位变化信息控制信号发生电路12的通电和断电。
本实施例中，当未开始充电时，信号发生电路12处于切断状态，第一通信模块14和第一MCU15处于待机状态，从而整体上使得发射端处于一个低功耗状态，当第一通信模块14接收无线充电系统的接收端发送的设备信息和充电请求，并转发至第一MCU15之后，第一MCU15根据设备信息注册接收端，再根据充电请求控制开关电路11接通信号发生电路12的供电，此时，信号发生电路12开始工作，生成激励信号，并将该激励信号发送至发射线圈13，发射线圈13接收到该激励信号后，根据该激励信号产生谐振，从而向外辐射能量，接收端的接收线圈即可通过在同样的固有频率实现共振，从而实现能量接收。信号发生电路12开始工作后，检测电路16开始检测发射线圈13的相位变化信息，并发送至第一MCU15，同时，第一通信模块14接收接收端反馈的充电状态信息，并转发至第一MCU15，第一MCU15根据充电状态信息和相位变化信息即可确认是否由接收端需要进行充电，若是，则第一MCU15控制信号发生电路12持续通电，从而进行充电，若否，则第一MCU15控制信号发生电路12断电，避免信号发生电路12进行无意义的能源消耗，第一通信模块14和第一MCU15重新进行待机状态，从而使得发射端再次进入低功耗 状态。具体地，充电状态信息包含了接收端的待充电电源的电量变化情况，相位变化信息包含了发射线圈的相位变化值，第一MCU15根据充电状态信息和相位变化信息即可确认接收端是否需要进行充电的具体过程为：
根据接收端的待充电电源的电量变化情况和发射线圈是否发生明显相位变化来确认接收端的待充电电源是否处于充电状态，当接收端的待充电电源的电量在增加，且发射线圈发生明显相位变化时，则说明接收端的待充电电源在进行充电，当接收端的待充电电源的电量未发生明显变化，且发射线圈也未发生明显相位变化时，则说明接收端未在进行充电。
需要说明的是，设备信息包括有接收端的类型信息，而不同的接收端的类型对应的充电区域不同。因此，进一步的，第一MCU15根据设备信息注册接收端后，还需根据设备信息识别接收端的类型，再根据接收端的类型控制第一通信模块14反馈提示信息至接收端，以提示用户将该接收端放置于充电区域。
进一步的，信号发生电路12包括信号发生器和功率放大器，信号发生器用于产生激励信号，功率放大器用于将激励信号的功率放大，从而提高能量转换率和传输距离。
进一步的，检测电路16检测发射线圈13的相位变化信息的过程具体为：检测电路16首先获取信号发生电路12产生的激励信号，再获取激励信号经过发射线圈13之后形成的待测信号，分析激励信号和待测信号，从而得出相位变化信息。
进一步的，开关电路11是一种继电器电路，通过第一MCU15控制三极管的工作状态作为控制继电器的通断，从而控制信号发生电路的接通和切断。
需要说明的是，第一通信模块14优选为低功耗蓝牙，应当理解的是其他可替代低功耗蓝牙，实现无线通信的的装置也属于本发明的保护范围之内。
本实施例通过第一通信模块接收的无线充电系统的接收端反馈的充电状态信息和检测电路检测发射线圈的得到的相位变化信息来确认从否有设备接入该无线充电系统进行充电，若有，则发射端控制信号发生电路开始工作，从而对设备进行充电，若无，则发射端控制切断信号发生电路的供电，其实现了检测无线充电系统的接收端的功能，从而避免信号发生电路持续工作而造成能源浪费，使得此无线充电技术的用户体验度得到提高。
为了提高该发射端的智能处理能力，上述实施例的基础上，其他实施例中，开始充电后，第一通信模块14持续接收接收端反馈的充电状态信息，并且检测电路16持续检测发射线圈13的相位变化信息，然后，第一MCU15再根据充电状态信息和相位变化信息确认接收端未处于充电区域时，控制第一通信模块发送提示信息至接收端，以提醒用户接收端是否已经移动至充电区域之外的地方。
本实施例通过在充电过程中持续接收接收端反馈的充电状态信息并检测发射线圈13的相位变化信息，当第一MCU15根据充电状态信息和相位变化信息确认接收端未处于充电区域时，提醒用户确认接收端当前所在的位置费否已经超出了充电区域的范围，避免因用户的无意识操作，导致充电过程被中断。
进一步的，第一MCU15控制第一通信模块发送提示信息至接收端，并间隔预设时长后，用户仍然未将接收端放回至充电区域范围之内，则第一MCU15控制开关电路11切断信号发生电路12的供电，避免造成能源浪费。
图2展示了本发明接收端的一个实施例。如图2所示，在本实施例中，该接收端包括依次电性连接的接收线圈20、整流稳压电路21、待充电电源22、第二MCU23、第二通信模块24。其中，接收线圈20用于接收无线充电系统的发射端发送至外部的能量，整流稳压电路21用于将接受线圈20接收到的能 量转换为直流电以对待充电电源22充电，第二通信模块24，用于发送自身的设备信息和充电请求至无线充电系统的发射端，该设备信息包括有接收端自身的类型信息，不同类型的接收端，其充电区域不相同，第二MCU23用于检测待充电电源22的充电状态信息，并控制第二通信模块24发送充电状态信息至发射端。
需要说明的是，第二通信模块24优选为低功耗蓝牙，应当理解的是其他可替代低功耗蓝牙，实现无线通信的的装置也属于本发明的保护范围之内。
本实施例中，当无线充电系统的发射端响应第二通信模块24发送的充电请求之后，接收线圈20开始接收发射端发送的能量，并通过整流稳压电路21将能量转换为可用于充电的直流电，以对待充电电源22充电，在充电过程中，第二MCU23持续检测待充电电源22的充电状态信息，并控制第二通信模块24发送充电状态信息至发射端。
本实施例通过第二MCU23持续检测待充电电源22的充电状态信息，并反馈至发射端，从而方便发射端检测接收端是否需要进行充电。
为了及时通知用户当前的充电状态，上述实施例的基础上，其他实施例中，如图2所示，接收端还包括输出模块25，第二通信模块24还用于接收发射端发送的提示信息并转发至第二MCU23，第二MCU23还用于控制输出模块25输出显示提示信息。
需要说明的是，该输出模块25包括显示屏和/或扬声器。
本实施例通过输出模块25输出显示提示信息，从而方便用户及时获知当前的充电状态，在出现充电异常时，方便用户及时获知并进行处理。
图3展示了本发明无线充电系统的一个实施例。如图3所示，本实施例中，该无线充电系统包括上述实施例中所述的发射端30和上述实施例中所述的接 收端31。其中，发射端30与接收端31之间实现了无线通讯，当发射端30接收到接收端31发送的充电请求时，发射端30开始工作，通过发射端30的发射线圈通过谐振向外辐射能量，接收端31的接收线圈通过同样的固有频率实现共振，从而实现能量接收，再将能量转换为直流电对可充电电源进行充电。详细工作流程请参阅上述发射端实施例和接收端实施例中所述，此处不再赘述。
图4展示了本发明无线充电方法的一个实施例。该无线充电方法应用于无线充电系统的发射端，发射端包括信号发生电路、发射线圈、电源、第一通信模块、开关电路、检测电路和第一MCU。本实施例中，如图1所示，该无线充电方法包括以下步骤：
步骤S1，接收接收端发送的充电请求，并转发至第一MCU。
具体地，在未进行充电时，第一通信模块和第一MCU处于待机状态，信号发生电路处于断电状态，该第一通信模块可接收无线充电系统的接收端发送的通信连接请求，并与接收端建立通信连接，当第一通信模块与接收端建立通信连接后，该第一通信模块可用于接收接收端发送的信息。
步骤S2，第一MCU根据充电请求控制开关电路接通信号发生电路的供电。
步骤S3，信号发生电路生成激励信号，并发送至发射线圈，发射线圈根据激励信号产生谐振，并向外辐射能量。
具体地，信号发生电路通电后，进行工作状态，生成激励信号并发送至发射线圈，发射线圈根据激励信号产生谐振，并向外辐射能量。
步骤S4，第一通信模块接收接收端发送的充电状态信息，并转发至第一MCU，且检测电路检测发射线圈的相位变化信息，并发送至第一MCU。
具体地，该充电状态信息包括接收端的待充电电源的电量变化情况，该相位变化信息包括发射线圈的相位变化情况。
步骤S5，第一MCU根据充电状态信息和相位变化信息判断接收端是否处于充电区域。若是，则执行步骤S6；若否，则执行步骤S7。
具体地，在获取到充电状态信息和相位变化信息，即可根据接收端的待充电电源的电量变化情况和发射线圈的相位变化情况来确认接收端是否处于充电区域。
步骤S6，第一MCU控制信号发生电路持续通电。
具体地，若接收端处于充电区域，则第一MCU控制开关电路持续接通信号发生电路的供电，从而保证信号发生电路持续工作，从而保证接收端的待充电电源持续充电。
步骤S7，第一MCU控制开关电路切断信号发生电路的供电。
具体地，若接收端未处于充电区域，则说明当前接收端不能进行充电，因此，第一MCU控制开关电路切断信号发生电路的供电，信号发生电路停止工作。
本实施例通过第一通信模块接收的无线充电系统的接收端反馈的充电状态信息和检测电路检测发射线圈的得到的相位变化信息来确认从否有设备接入该无线充电系统进行充电，若有，则发射端控制信号发生电路开始工作，从而对设备进行充电，若无，则发射端控制切断信号发生电路的供电，其实现了检测无线充电系统的接收端的功能，从而避免信号发生电路持续工作而造成能源浪费，使得此无线充电技术的用户体验度得到提高。
进一步的，不同类型的接收端的充电区域的范围各不相同，为了避免用户因不清楚当前接收端的充电范围而造成充电失败，上述实施例的基础上，其他实施例中，如图5所示，步骤S1之前，还包括：
步骤S10，第一通信模块接收到接收端发送的设备信息，并将设备信息转 发至第一MCU。
具体地，第一通信模块与接收端建立通信连接后，接收其发送的设备信息，并转发至第一MCU。
步骤S11，第一MCU根据设备信息注册接收端，并识别接收端的类型，再根据接收端的类型控制第一通信模块反馈提示信息至接收端，以提示用户将接收端放置于充电区域。
具体地，不同的接收端的类型，其可充电的充电区域范围各不相同，因此，第一MCU在接收到设备信息后，根据该设备信息注册接收端，并识别该接收端的类型，再根据接收端的类型确认其可充电的充电区域，根据该充电区域发送提示信息至接收端，从而提示用户将接收端放置于充电区域。需要说明的是，每种类型的接收端的充电区域可预设存储于第一MCU中。
本实施例通过确认接收端的类型，从而获取其充电区域的范围，再告知接收端，通过接收端提示客户当前接收端的充电区域，避免客户将设备移动到充电区域以外的地方，导致充电过程中断。
进一步的，上述实施例的基础上，其他实施例中，步骤S5具体包括三种情况：
其一，当根据充电状态信息确认接收端有电量输入，且根据相位变化信息确认发射线圈明显发生相位变化时，确认接收端处于充电区域。
其二，当根据充电状态信息确认接收端无电量输入，且根据相位变化信息确认发射线圈未明显发生相位变化时，确认接收端未处于充电状态处于充电区域。
其三，当根据充电状态信息确认接收端有电量输入，且根据相位变化信息确认发射线圈未明显发生相位变化时，发送提示信息至接收端，以提醒用户接 收端处于充电区域的边缘位置。
具体地，因接收端的充电区域的限制，当接收端处于充电区域的边缘位置时，接收端能接受发射端向外辐射的极小一部分能量，并将该部分能量转换为直流电为接收端的待充电电源进行充电，但是，此时的发射线圈的相位变化很小，从而导致出现接收端有电量输入而发射线圈未明显发生相位变化的情况，此时，为了更好的进行充电，则发送提示信息至接收端，以提醒用户接收端处于充电区域的边缘位置。
为了进一步提高发射端的智能处理能力，上述实施例的基础上，其他实施例中，如图6所示，步骤S6之后，还包括：
步骤S20，第一通信模块接收到接收端反馈的电量充满信号，并发送至第一MCU。
步骤S21，第一MCU控制开关电路切断信号发生电路的供电。
本实施例通过第一通信模块接收到接收端反馈的电量充满信号之后，第一MCU控制开关电路切断信号发生电路的供电，从而停止充电操作，避免信号发生电路继续工作浪费能量。
为了进一步提高发射端的智能处理能力，上述实施例的基础上，其他实施例中，如图7所示，步骤S6之后，还包括：
步骤S30，当根据充电状态信息确认接收端无电量输入，且根据相位变化信息确认发射线圈未明显发生相位变化时，第一MCU控制第一通信模块发送提示信息至接收端，提醒用户接收端已离开充电区域。
具体地，当发射端开始工作，接收端进入充电状态后，第一通信模块仍然持续接收接收端反馈的充电状态信息，检测模块持续检测发射线圈的相位变化信息，此时，若根据充电状态信息确认接收端无电量输入，且根据相位变化信 息确认发射线圈未明显发生相位变化，则说明接收端已离开充电区域，因此，通过第一MCU控制第一通信模块发送提示信息至接收端，以提醒用户接收端已离开充电区域。
步骤S31，间隔预设时长后，若接收端仍未重新进入充电状态，则第一MCU控制开关电路切断信号发生电路的供电。
需要说明的是，该预设时长预先设置。
具体地，当间隔预设时长后，接收端仍然未回到充电区域，即接收端仍未重新进入充电状态，则第一MCU控制开关电路切断信号发生电路的供电。
本实施例通过在接收端进入充电状态后，若根据充电状态信息确认接收端无电量输入，且根据相位变化信息确认发射线圈未明显发生相位变化，则说明接收端已离开充电区域，此时，发送提示信息至接收端，提醒用户接收端已离开充电区域，如要继续充电，则需要将接收端放回充电区域，避免因用户的无意识操作导致充电过程被中断。进一步，在间隔预设时长后，若接收端仍未重新进入充电状态，则第一MCU控制开关电路切断信号发生电路的供电，从而避免了信号发生电路持续工作造成能源浪费。
图8展示了本发明无线充电方法的另一个实施例。该无线充电方法应用于无线充电系统的接收端，接收端包括接收线圈、整流稳压电路、待充电电源、第二通信模块和第二MCU。如图8所示，该无线充电方法包括：
步骤S40，发送充电请求至发射端。
具体地，该第二通信模块可发送通信连接请求至无线充电系统的发射端，并与发射端建立通信连接，第二通信模块与接收端建立通信连接后，当待充电电源需要进行充电时，该第二通信模块可用于发送充电请求至发射端。
步骤S41，接收线圈接收到发射端发送的能量，并通过整流稳压电路转化 为直流电，以对待充电电源充电。
步骤S42，第二MCU检测待充电电源的充电状态信息，并控制第二通信模块发送充电状态信息至发射端。
本实施例通过第二通信模块发送充电请求至无线充电系统的发射端，发射端响应该充电请求之后，即可开始充电。
进一步的，上述实施例的基础上，其他实施例中，如图9所示，步骤S42之后，还包括：
步骤S50，第二MCU检测到待充电电源充满电时，控制第二通信模块发送电量充满信号至发射端。
具体地，在接收端进行充电状态之后，第二MCU持续检测待充电电源的充电状态，当待充电电源充满电时，控制第二通信模块发送电量充满信号至发射端，从而提醒发射端充电已完成，可停止充电操作。
进一步的，为了方便用户快速了解到充电过程中出现的充电异常，该接收端还包括输出模块，该无线充电方法还可通过第二通信模块接收发射端发送的提示信息并转发至第二MCU，第二MCU控制输出模块输出显示提示信息。通过输出模块及时发送提示信息至外部，从而提醒用户接收端当前处于充电异常状态，方便用户及时进行调整。
为了进一步提高接收端的智能处理能力，上述实施例的基础上，其他实施例中，如图10所述，步骤S40之前，还包括：
步骤S60，第二MCU获取待充电电源的电量信息，并根据电量信息确认待充电电源需要充电时，控制第二通信模块发送自身的设备信息至发射端。
本实施例通过第二MCU来获取待充电电源的电量信息，根据该电量信息，第二MCU可以确认待充电电源是否需要进行充电，当待充电电源需要充电时， 第二MCU控制第二通信模块发送自身的设备信息至发射端，当待充电电源不需要充电时，则不需要发送设备信息和充电请求至发射端。
在一些实施例中，还可设置一个预设电量阈值，当待充电电源的电量高于该预设电量阈值时，第二MCU确认该待充电电源当前不需要进行充电，当待充电电源的电量低于该预设电量阈值时，第二MCU确认该待充电电源当前需要进行充电。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (14)

  1. 一种发射端，其应用于无线充电系统，其包括信号发生电路、发射线圈和电源，其特征在于，所述发射端还包括：
    第一通信模块，用于接收所述无线充电系统的接收端发送的设备信息、充电请求和充电状态信息；
    开关电路，分别与所述信号发生电路、所述电源电性连接，用于接通或切断所述信号发生电路的供电；
    检测电路，与所述发射线圈电性连接，用于检测所述发射线圈的相位变化信息；
    第一MCU，分别与所述第一通信模块、所述开关电路、所述检测电路、所述电源电性连接，用于根据所述设备信息注册所述接收端后，根据所述充电请求控制所述开关电路接通所述信号发生电路的供电，并根据所述充电状态信息和所述相位变化信息控制所述信号发生电路的通电和断电。
  2. 根据权利要求1所述的发射端，其特征在于，所述第一MCU还用于根据所述充电状态信息和所述相位变化信息确认所述接收端未处于充电区域时，控制所述第一通信模块发送提示信息至所述接收端。
  3. 一种接收端，其应用于无线充电系统，其包括接收线圈、整流稳压电路和待充电电源，其特征在于，所述接收端还包括：
    第二通信模块，用于发送自身的设备信息和充电请求至无线充电系统的发射端；
    第二MCU，与所述待充电电源、所述第二通信模块电性连接，用于检测所述待充电电源的充电状态信息，并控制所述第二通信模块发送所述充电状态信 息至所述发射端。
  4. 根据权利要求3所述的接收端，其特征在于，所述接收端还包括输出模块，与所述第二MCU电性连接，所述第二通信模块还用于接收所述发射端发送的提示信息并转发至所述第二MCU，所述第二MCU还用于控制所述输出模块输出显示所述提示信息。
  5. 一种无线充电系统，其特征在于，其包括权利要求1-2任一项所述的发射端和权利要求3-4任一项所述的接收端。
  6. 一种无线充电方法，其特征在于，其应用于无线充电系统的发射端，所述发射端包括信号发生电路、发射线圈、电源、第一通信模块、开关电路、检测电路和第一MCU；所述无线充电方法包括：
    所述第一通信模块与无线充电系统的接收端建立通信连接后，接收所述接收端发送的充电请求，并转发至所述第一MCU；
    所述第一MCU根据所述充电请求控制所述开关电路接通所述信号发生电路的供电；
    所述信号发生电路生成激励信号，并发送至所述发射线圈，所述发射线圈根据所述激励信号产生谐振，并向外辐射能量；
    所述第一通信模块接收所述接收端发送的充电状态信息，并转发至所述第一MCU，且所述检测电路检测所述发射线圈的相位变化信息，并发送至所述第一MCU；
    所述第一MCU根据所述充电状态信息和所述相位变化信息判断所述接收端是否处于充电区域；
    若是，则所述第一MCU控制所述信号发生电路持续通电；
    若否，则所述第一MCU控制所述开关电路切断所述信号发生电路的供电。
  7. 根据权利要求6所述的无线充电方法，其特征在于，所述接收所述接收端发送的充电请求，并转发至所述第一MCU的步骤之前，还包括：
    所述第一通信模块接收到所述接收端发送的设备信息，并将所述设备信息转发至所述第一MCU；
    所述第一MCU根据所述设备信息注册所述接收端，并识别所述接收端的类型，再根据所述接收端的类型控制所述第一通信模块反馈提示信息至所述接收端，以提示用户将所述接收端放置于所述充电区域。
  8. 根据权利要求6所述的无线充电方法，其特征在于，所述第一MCU根据所述充电状态信息和所述相位变化信息判断所述接收端是否处于充电区域的步骤包括：
    当根据所述充电状态信息确认所述接收端有电量输入，且根据所述相位变化信息确认所述发射线圈明显发生相位变化时，确认所述接收端处于所述充电区域；
    当根据所述充电状态信息确认所述接收端无电量输入，且根据所述相位变化信息确认所述发射线圈未明显发生相位变化时，确认所述接收端未处于所述充电区域；
    当根据所述充电状态信息确认所述接收端有电量输入，且根据所述相位变化信息确认所述发射线圈未明显发生相位变化时，发送提示信息至所述接收端，以提醒用户所述接收端处于所述充电区域的边缘位置。
  9. 根据权利要求6所述的无线充电方法，其特征在于，所述第一MCU控制所述信号发生电路持续通电的步骤之后，还包括：
    所述第一通信模块接收到所述接收端反馈的电量充满信号，并发送至所述第一MCU；
    所述第一MCU控制所述开关电路切断所述信号发生电路的供电。
  10. 根据权利要求6所述的无线充电方法，其特征在于，所述第一MCU控制所述信号发生电路持续通电的步骤之后，还包括：
    当根据所述充电状态信息确认所述接收端无电量输入，且根据所述相位变化信息确认所述发射线圈未明显发生相位变化时，所述第一MCU控制所述第一通信模块发送提示信息至所述接收端，提醒用户所述接收端已离开充电区域；
    间隔预设时长后，若所述接收端仍未重新进入充电状态，则所述第一MCU控制所述开关电路切断所述信号发生电路的供电。
  11. 一种无线充电方法，其特征在于，其应用于无线充电系统的接收端，所述接收端包括接收线圈、整流稳压电路、待充电电源、第二通信模块和第二MCU；其特征在于，所述无线充电方法包括：
    所述第二通信模块与无线充电系统的发射端建立通信连接后，发送充电请求至所述发射端；
    所述接收线圈接收到所述发射端发送的能量，并通过所述整流稳压电路转化为直流电，以对所述待充电电源充电；
    所述第二MCU检测所述待充电电源的充电状态信息，并控制所述第二通信模块发送所述充电状态信息至所述发射端。
  12. 根据权利要求11所述的无线充电方法，其特征在于，所述第二MCU检测所述待充电电源的充电状态信息的步骤之后，还包括：
    所述第二MCU检测到所述待充电电源充满电时，控制所述第二通信模块发送电量充满信号至所述发射端。
  13. 根据权利要求11所述的无线充电方法，其特征在于，所述接收端还包括输出模块；所述方法还包括：
    所述第二通信模块接收所述发射端发送的提示信息并转发至所述第二MCU；
    所述第二MCU控制所述输出模块输出显示所述提示信息。
  14. 根据权利要求11所述的无线充电方法，其特征在于，所述发送充电请求至所述发射端的步骤之前，包括：
    所述第二MCU获取所述待充电电源的电量信息，并根据所述电量信息确认所述待充电电源需要充电时，控制所述第二通信模块发送自身的设备信息至所述发射端。
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