CN109038742B - Wireless charging system - Google Patents

Wireless charging system Download PDF

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Publication number
CN109038742B
CN109038742B CN201810935437.2A CN201810935437A CN109038742B CN 109038742 B CN109038742 B CN 109038742B CN 201810935437 A CN201810935437 A CN 201810935437A CN 109038742 B CN109038742 B CN 109038742B
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signal
voltage
circuit
wake
vehicle
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CN201810935437.2A
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CN109038742A (en
Inventor
范春鹏
肖胜然
苏伟
蒋荣勋
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Beijing Electric Vehicle Co Ltd
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Beijing Electric Vehicle Co Ltd
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    • H02J7/025—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—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
    • H04B5/79—
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Abstract

The present invention provides a wireless charging system, including: ground equipment and vehicle-end equipment; the ground equipment comprises a first wireless communication module; the vehicle-end equipment comprises a wake-up circuit, an auxiliary power supply, a second wireless communication module, a power supply circuit and a vehicle control unit; the wake-up circuit is used for receiving the wake-up signal and controlling and conducting the connection between the power circuit and the auxiliary power supply under the control of the wake-up signal so that the power circuit sends a driving voltage signal to the auxiliary power supply; the auxiliary power supply is used for sending a first control signal to the second wireless communication module according to the driving voltage signal; the second wireless communication module is used for sending a vehicle awakening signal to the vehicle controller according to the wireless charging confirmation signal. Therefore, the wake-up circuit can receive the wake-up signal and can control connection between the power supply circuit and the auxiliary power supply under the control of the wake-up signal, the second wireless communication module can send a signal for waking up the whole vehicle to the whole vehicle controller, and the whole vehicle can wake up the wireless charging system.

Description

Wireless charging system
Technical Field
The invention relates to the field of automobiles, in particular to a wireless charging system.
Background
In the prior art, the whole vehicle cannot wake up the wireless charging system. For example, due to the power supply of the vehicle-end equipment, the function of waking up the whole vehicle is provided. However, after the whole vehicle is powered off, the function of awakening the wireless charging system by the whole vehicle is not provided. Or the vehicle-end equipment is provided with a high-voltage wake-up circuit, and the whole vehicle can be woken up by the scheme. However, the whole vehicle cannot wake up the wireless charging system, that is, the whole vehicle cannot initiate a charging process. Therefore, in the prior art, the whole vehicle cannot wake up the wireless charging system.
Disclosure of Invention
The embodiment of the invention provides a wireless charging system, which aims to solve the problem that a whole vehicle cannot wake up the wireless charging system in the prior art.
In order to solve the above technical problem, an embodiment of the present invention provides a wireless charging system, including:
ground equipment and vehicle-end equipment;
the ground equipment comprises a first wireless communication module;
the vehicle-end equipment comprises a wake-up circuit, an auxiliary power supply, a second wireless communication module, a power circuit and a vehicle control unit, wherein the wake-up circuit is connected with the auxiliary power supply, the auxiliary power supply is connected with the second wireless communication module, the second wireless communication module is connected with the vehicle control unit, and the power circuit is connected with the wake-up circuit;
the wake-up circuit is used for receiving a wake-up signal and controlling and conducting connection between the power circuit and the auxiliary power supply under the control of the wake-up signal so that the power circuit sends a driving voltage signal to the auxiliary power supply;
the auxiliary power supply is used for sending a first control signal to the second wireless communication module according to the driving voltage signal;
the second wireless communication module is used for sending a wireless charging request signal to the first wireless communication module according to the first control signal;
the first wireless communication module is used for sending a wireless charging confirmation signal to the second wireless communication module according to the wireless charging request signal;
and the second wireless communication module is used for sending a finished automobile awakening signal to the finished automobile controller according to the wireless charging confirmation signal.
Optionally, the ground device further includes a transmitting driving circuit and a transmitting coil, and the vehicle-end device further includes a receiving coil and a signal conversion circuit;
the wake-up signal comprises a start-up voltage signal;
the transmitting driving circuit is used for providing a power signal for the transmitting coil so as to enable the transmitting coil to transmit the power signal;
the receiving coil is used for receiving the power signal and transmitting the power signal to the signal conversion circuit;
the signal conversion circuit is used for converting the power signal into the starting voltage signal;
the wake-up circuit comprises a first wake-up sub-circuit, and the signal conversion circuit is connected with the first wake-up sub-circuit; the first wake-up sub-circuit is used for controlling and conducting connection between the power supply circuit and the auxiliary power supply according to the starting voltage signal.
Optionally, the first wake-up sub-circuit includes a voltage dividing module and a switch module, wherein,
the voltage division module is used for dividing the starting voltage signal to obtain a divided voltage signal;
the switch module is used for controlling and conducting the connection between the power circuit and the auxiliary power supply according to the divided voltage signal.
Optionally, the voltage dividing module includes a first voltage dividing resistor, a second voltage dividing resistor, a voltage dividing capacitor, and a voltage dividing stabilivolt;
the first end of the first voltage dividing resistor is connected with the starting voltage signal;
the second end of the first voltage-dividing resistor is connected with the first end of the second voltage-dividing resistor and the first end of the voltage-dividing capacitor, the first end of the voltage-dividing capacitor is connected with the first end of the second voltage-dividing resistor, the second end of the voltage-dividing capacitor is connected with the anode of the voltage-dividing voltage-stabilizing tube, and the cathode of the voltage-dividing voltage-stabilizing tube is connected with the second end of the second voltage-dividing resistor;
and the cathode of the voltage division voltage stabilizing tube is used for outputting the voltage division voltage signal.
Optionally, the switch module includes a switch triode, a switch voltage regulator tube, a switch resistor, a first photoelectric coupler and an output resistor;
the base electrode of the switching triode is connected with the divided voltage signal;
a collector of the switching triode is connected with the second end of the first voltage-dividing resistor, a base of the switching triode is connected with a cathode of the voltage-dividing voltage-stabilizing tube, an emitter of the switching triode is connected with an anode of the switching voltage-stabilizing tube, and a cathode of the switching voltage-stabilizing tube is connected with the first end of the switching resistor;
the first input end of the first photoelectric coupler is connected with the second end of the switch resistor, the second input end of the first photoelectric coupler is connected with the first end of the output resistor, the first output end of the first photoelectric coupler is connected with the anode of the voltage-dividing voltage-stabilizing tube and the second end of the voltage-dividing capacitor, the second output end of the first photoelectric coupler is connected with the auxiliary power supply, and the second end of the output resistor is connected with the power circuit.
Optionally, the vehicle-end device further includes a remote information processor, the wake-up circuit includes a second wake-up sub-circuit, and the remote information processor is connected to the second wake-up sub-circuit;
the wake-up signal comprises a level signal;
the telematics processor is to send the level signal to the second wake-up sub-circuit;
and the second wake-up sub-circuit is used for controlling and conducting the connection between the power supply circuit and the auxiliary power supply according to the level signal.
Optionally, the second wake-up sub-circuit includes a second photoelectric coupler and a wake-up resistor, the power circuit is connected to a first end of the wake-up resistor, a first input end of the second photoelectric coupler is connected to the telematics processor, a second input end of the second photoelectric coupler is connected to a second end of the wake-up resistor, a first output end of the second photoelectric coupler is connected to a ground line, and a second output end of the second photoelectric coupler is connected to the auxiliary power supply;
a first input end of the second photoelectric coupler is connected with the level signal;
and the second photoelectric coupler is used for controlling and conducting the connection between the power circuit and the auxiliary power supply according to the level signal.
Optionally, the telematics processor is further configured to receive a second control signal sent by the terminal;
and the remote information processor is used for sending the level signal to the first input end of the second photoelectric coupler according to the second control signal.
Optionally, the vehicle-end device further includes a vehicle-end control panel, the vehicle-end control panel is connected to the auxiliary power supply, and the vehicle-end control panel is connected to the second wireless communication module;
the auxiliary power supply is used for sending a starting signal to the vehicle end control panel according to the driving voltage signal;
the vehicle-end control board is used for sending the first control signal to the second wireless communication module according to the starting signal;
the second wireless communication module is also used for sending a third control signal to the vehicle-end control board according to the wireless charging confirmation signal;
and the vehicle end control board is used for sending the vehicle-finished-vehicle awakening signal to the vehicle-finished-vehicle controller according to the third control signal.
Optionally, the vehicle controller is configured to send a fourth control signal to the vehicle-end control board according to the vehicle wake-up signal;
the vehicle-end control board is used for sending a fifth control signal to the second wireless communication module according to the fourth control signal;
the second wireless communication module is used for sending a sixth control signal to the first wireless communication module according to the fifth control signal;
the first wireless communication module is used for sending a seventh control signal to the emission driving circuit according to the sixth control signal;
the transmitting driving circuit is used for providing a wireless charging signal for the transmitting coil according to the seventh control signal;
the transmitting coil is used for transmitting the wireless charging signal to the receiving coil.
Therefore, the wireless charging system comprises ground equipment and vehicle-end equipment; the ground equipment comprises a first wireless communication module; the vehicle-end equipment comprises a wake-up circuit, an auxiliary power supply, a second wireless communication module, a power circuit and a vehicle control unit, wherein the wake-up circuit is connected with the auxiliary power supply, the auxiliary power supply is connected with the second wireless communication module, the second wireless communication module is connected with the vehicle control unit, and the power circuit is connected with the wake-up circuit; the wake-up circuit is used for receiving a wake-up signal and controlling and conducting connection between the power circuit and the auxiliary power supply under the control of the wake-up signal so that the power circuit sends a driving voltage signal to the auxiliary power supply; the auxiliary power supply is used for sending a first control signal to the second wireless communication module according to the driving voltage signal; the second wireless communication module is used for sending a wireless charging request signal to the first wireless communication module according to the first control signal; the first wireless communication module is used for sending a wireless charging confirmation signal to the second wireless communication module according to the wireless charging request signal; and the second wireless communication module is used for sending a finished automobile awakening signal to the finished automobile controller according to the wireless charging confirmation signal. Therefore, the wake-up circuit can receive the wake-up signal and can control connection between the power supply circuit and the auxiliary power supply under the control of the wake-up signal, the auxiliary power supply can start the second wireless communication module according to the driving voltage signal sent by the power supply circuit, the second wireless communication module can send a wake-up signal for the whole vehicle to the whole vehicle controller, and the whole vehicle wake-up wireless charging system can be achieved.
Drawings
Fig. 1 is a schematic diagram of a wireless charging system according to an embodiment of the present invention;
fig. 2 is a partial schematic view of a vehicle-end device provided in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, fig. 1 is a schematic diagram of a wireless charging system. A wireless charging system comprises a ground device 1 and a vehicle-end device 2; the ground equipment 1 comprises a first wireless communication module 11; the vehicle-end device 2 comprises a wake-up circuit 21, an auxiliary power supply 22, a second wireless communication module 23, a power supply circuit 24 and a vehicle control unit 25, wherein the wake-up circuit 21 is connected with the auxiliary power supply 22, the auxiliary power supply 22 is connected with the second wireless communication module 23, the second wireless communication module 23 is connected with the vehicle control unit 25, and the power supply circuit 24 is connected with the wake-up circuit 21; the wake-up circuit 21 is configured to receive a wake-up signal, and control and conduct a connection between the power circuit 24 and the auxiliary power supply 22 under the control of the wake-up signal, so that the power circuit 24 sends a driving voltage signal to the auxiliary power supply 22; the auxiliary power supply 22 is configured to send a first control signal to the second wireless communication module 23 according to the driving voltage signal; the second wireless communication module 23 is configured to send a wireless charging request signal to the first wireless communication module 11 according to the first control signal; the first wireless communication module 11 is configured to send a wireless charging confirmation signal to the second wireless communication module 23 according to the wireless charging request signal; the second wireless communication module 23 is configured to send a vehicle control wake-up signal to the vehicle control unit 25 according to the wireless charging confirmation signal.
As shown in fig. 1, a wireless charging system may include a ground device 1 and a vehicle-end device 2. The ground equipment 1 may include a first wireless communication module 11; the vehicle-end device 2 may include a wake-up circuit 21, an auxiliary power supply 22, a second wireless communication module 23, a power supply circuit 24, and a vehicle control unit 25. The wake-up circuit 21 may be connected to the auxiliary power source 22, the auxiliary power source 22 may be connected to the second wireless communication module 23, the second wireless communication module 23 may be connected to the vehicle control unit 25, and the power circuit 24 may be connected to the wake-up circuit 21. The wake-up circuit 21 is configured to receive a wake-up signal, and may control connection between the power supply circuit 24 and the auxiliary power supply 22 under control of the wake-up signal, so that the power supply circuit 24 sends a driving voltage signal to the auxiliary power supply 22. The auxiliary power supply 22 is configured to send a first control signal to the second wireless communication module 23 according to the driving voltage signal; the second wireless communication module 23 is configured to send a wireless charging request signal to the first wireless communication module 11 according to the first control signal; the first wireless communication module 11 is configured to send a wireless charging confirmation signal to the second wireless communication module 23 according to the wireless charging request signal; the second wireless communication module 23 is configured to send a vehicle control wake-up signal to the vehicle control unit 25 according to the wireless charging confirmation signal. Therefore, the wake-up circuit can receive the wake-up signal and can control connection between the power supply circuit and the auxiliary power supply under the control of the wake-up signal, the auxiliary power supply can start the second wireless communication module according to the driving voltage signal sent by the power supply circuit, the second wireless communication module can send a wake-up signal for the whole vehicle to the whole vehicle controller, and the whole vehicle wake-up wireless charging system can be achieved.
Optionally, the ground device 1 further includes a transmitting driving circuit 12 and a transmitting coil 13, and the vehicle-end device 2 further includes a receiving coil 26 and a signal conversion circuit 27;
the wake-up signal comprises a start-up voltage signal;
the transmission driving circuit 12 is configured to provide a power signal to the transmission coil 13, so that the transmission coil 13 transmits the power signal;
the receiving coil 26 is used for receiving the power signal and transmitting the power signal to the signal conversion circuit 27;
the signal conversion circuit 27 is configured to convert the power signal into the starting voltage signal;
the wake-up circuit 21 comprises a first wake-up sub-circuit 211, and the signal conversion circuit 27 is connected to the first wake-up sub-circuit 211; the first wake-up sub-circuit 211 is configured to control and conduct the connection between the power circuit 24 and the auxiliary power supply 22 according to the start voltage signal.
The ground equipment 1 may further include a transmission drive circuit 12 and a transmission coil 13, and the end-of-vehicle equipment 2 may further include a reception coil 26 and a signal conversion circuit 27. The transmit driver circuit 12 may include an ac power source 121, a power factor correction circuit 122, an inverter circuit 123, a first resonant network 124, and a surface equipment control board 125. The alternating current power supply 121 is connected to the power factor correction circuit 122, the power factor correction circuit 122 is connected to the inverter circuit 123, the inverter circuit 123 is connected to the first resonant network 124, the first resonant network 124 is connected to the transmitting coil 13, the ground device control board 125 is connected to the power factor correction circuit 122 and the inverter circuit 123, and the ground device control board 125 is further connected to the first wireless communication module 11.
Signal conversion circuit 27 may include a second resonant network 271 and a rectifying circuit 272. The receiving coil 26 is connected to the second resonant network 271, the second resonant network 271 is connected to the rectifying circuit 272, and the rectifying circuit 272 may include a first diode 2721, a second diode 2722, a third diode 2723, and a fourth diode 2724.
The wake-up signal may include an activation voltage signal. The transmit drive circuit 12 is configured to provide a power signal to the transmit coil 13 to cause the transmit coil 13 to transmit the power signal. The receiving coil 26 is used for receiving the power signal and transmitting the power signal to the signal conversion circuit 27. The signal conversion circuit 27 is used for converting the power signal into the starting voltage signal. The wake-up circuit 21 may comprise a first wake-up sub-circuit 211, and the signal conversion circuit 27 is connected to the first wake-up sub-circuit 211, i.e. the rectifying circuit 272 is connected to the first wake-up sub-circuit 211. The first wake-up sub-circuit 211 is used for controlling the connection between the power supply circuit 24 and the auxiliary power supply 22 according to the start-up voltage signal.
Optionally, the first wake-up sub-circuit 211 includes a voltage division module 2111 and a switch module 2112, wherein,
the voltage division module 2111 is configured to divide the starting voltage signal to obtain a divided voltage signal;
the switch module 2112 is configured to control and conduct the connection between the power circuit 24 and the auxiliary power supply 22 according to the divided voltage signal.
Fig. 2 is a partial schematic view of the vehicle-end equipment. The first wake-up sub-circuit 211 may include a voltage dividing module 2111 and a switch module 2112, wherein the voltage dividing module 2111 is configured to divide the starting voltage signal to obtain a divided voltage signal. The switch module 2112 is configured to control connection between the power supply circuit 24 and the auxiliary power supply 22 according to the divided voltage signal.
Optionally, the voltage dividing module 2111 includes a first voltage dividing resistor 21111, a second voltage dividing resistor 21112, a voltage dividing capacitor 21113, and a voltage dividing stabilivolt 21114;
a first end of the first voltage dividing resistor 21111 is connected to the starting voltage signal;
a second end of the first voltage-dividing resistor 21111 is connected to a first end of the second voltage-dividing resistor 21112 and a first end of the voltage-dividing capacitor 21113, a first end of the voltage-dividing capacitor 21113 is connected to a first end of the second voltage-dividing resistor 21112, a second end of the voltage-dividing capacitor 21113 is connected to an anode of the voltage-dividing stabilivolt 21114, and a cathode of the voltage-dividing stabilivolt 21114 is connected to a second end of the second voltage-dividing resistor 21112;
the cathode of the voltage-dividing stabilivolt 21114 is used for outputting the voltage-dividing signal.
As shown in fig. 2, the voltage dividing module 2111 may include a first voltage dividing resistor 21111, a second voltage dividing resistor 21112, a voltage dividing capacitor 21113, and a voltage dividing stabilivolt 21114. A first end of the first voltage dividing resistor 21111 is connected to the start voltage signal. A second end of the first voltage-dividing resistor 21111 is connected to a first end of the second voltage-dividing resistor 21112 and a first end of the voltage-dividing capacitor 21113, a first end of the voltage-dividing capacitor 21113 is connected to a first end of the second voltage-dividing resistor 21112, a second end of the voltage-dividing capacitor 21113 is connected to an anode of the voltage-dividing regulator 21114, and a cathode of the voltage-dividing regulator 21114 is connected to a second end of the second voltage-dividing resistor 21112. The cathode of the voltage-dividing stabilivolt 21114 is used for outputting the voltage-dividing signal.
Optionally, the switching module 2112 includes a switching transistor 21121, a switching regulator 21122, a switching resistor 21123, a first photocoupler 21124, and an output resistor 21125;
the base electrode of the switching triode 21121 is connected with the divided voltage signal;
a collector of the switching triode 21121 is connected with the second end of the first voltage-dividing resistor 21111, a base of the switching triode 21121 is connected with a cathode of the voltage-dividing regulator 21114, an emitter of the switching triode 21121 is connected with an anode of the switching regulator 21122, and a cathode of the switching regulator 21122 is connected with the first end of the switching resistor 21123;
a first input end of the first photoelectric coupler 21124 is connected to a second end of the switch resistor 21123, a second input end of the first photoelectric coupler 21124 is connected to a first end of the output resistor 21125, a first output end of the first photoelectric coupler 21124 is connected to an anode of the voltage-dividing regulator 21114 and a second end of the voltage-dividing capacitor 21113, a second output end of the first photoelectric coupler 21124 is connected to the auxiliary power supply 22, and a second end of the output resistor 21125 is connected to the power supply circuit 24.
As shown in fig. 2, the switching module 2112 may include a switching transistor 21121, a switching regulator 21122, a switching resistor 21123, a first optocoupler 21124, and an output resistor 21125. The base of the switching transistor 21121 is connected to the divided voltage signal. The collector of the switching transistor 21121 is connected to the second end of the first voltage-dividing resistor 21111, the base of the switching transistor 21121 is connected to the cathode of the voltage-dividing regulator 21114, and the emitter of the switching transistor 21121 is connected to the anode of the switching regulator 21122. After the base of the switching transistor 21121 receives the divided voltage signal, the collector and emitter of the switching transistor 21121 are in a conducting state.
The cathode of the switching regulator 21122 is connected to a first terminal of a switching resistor 21123. A first input end of the first photoelectric coupler 21124 is connected to a second end of the switch resistor 21123, a second input end of the first photoelectric coupler 21124 is connected to a first end of the output resistor 21125, a first output end of the first photoelectric coupler 21124 is connected to an anode of the voltage-dividing regulator 21114 and a second end of the voltage-dividing capacitor 21113, and a second output end of the first photoelectric coupler 21124 is connected to the auxiliary power supply 22. A second terminal of the output resistor 21125 is connected to the power supply circuit 24. The first photo coupler 21124 may include a first light emitting diode 211241 and a first light receiving transistor 211242.
After the collector and the emitter of the switching transistor 21121 are in a conducting state, a start voltage signal may flow into the first light emitting diode 211241 of the first photocoupler 21124 through the first voltage dividing resistor 21111, the switching transistor 21121, the switching regulator 21122, and the switching resistor 21123. The first light emitting diode 211241 is used for emitting a light signal to the base of the first light receiving transistor 211242 according to the received start voltage signal. After the base of the first light receiving transistor 211242 receives the optical signal, the collector and the emitter of the first light receiving transistor 211242 are in a conducting state. The power circuit 24 can then send a driving voltage signal, which can be 12 volts, to the auxiliary power supply 22 through the output resistor 21125 and the first light receiving transistor 211242 in the conducting state.
As shown in fig. 2, the first wake-up sub-circuit 211 may also include a capacitor 2113. A first terminal of the capacitor 2113 may be connected to a cathode of a switching regulator 21122 and a first terminal of a switching resistor 21123; a second terminal of the capacitor 2113 may be connected to a second terminal of the voltage dividing capacitor 21113, an anode of the voltage dividing regulator 21114, and a first output terminal of the first photocoupler 21124.
As shown in fig. 1, the vehicle end equipment 2 may also include a connector 30, and the connector 30 may include a plurality of pins, one of which may be connected to the power circuit 24.
Optionally, the vehicle-end device further includes a telematics processor 28, the wake-up circuit 21 includes a second wake-up sub-circuit 212, and the telematics processor 28 is connected to the second wake-up sub-circuit 212;
the wake-up signal comprises a level signal;
the telematics processor 28 is configured to send the level signal to the second wake-up sub-circuit 212;
the second wake-up sub-circuit 212 is configured to control and conduct the connection between the power circuit 24 and the auxiliary power source 22 according to the level signal.
As shown in fig. 2, the vehicle-end device 2 may further include a telematics unit (TBOX)28, the wake-up circuit 21 may include a second wake-up sub-circuit 212, the telematics unit 28 is connected to the second wake-up sub-circuit 212, and the telematics unit 28 is connected to the power circuit 24.
The Wake-up signal may include a level signal (Wake-WPT) that the telematics processor 28 is configured to send to the second Wake-up sub-circuit 212 when the vehicle is in an ON gear, i.e., the vehicle is in a powered-up state. The second wake-up sub-circuit 212 is used for controlling the connection between the power supply circuit 24 and the auxiliary power supply 22 according to the level signal.
Optionally, the second wake-up sub-circuit 212 includes a second photocoupler 2121 and a wake-up resistor 2122, the power circuit 24 is connected to the first end of the wake-up resistor 2122, a first input end of the second photocoupler 2121 is connected to the telematics unit 28, a second input end of the second photocoupler 2121 is connected to the second end of the wake-up resistor 2122, a first output end of the second photocoupler 2121 is connected to the ground, and a second output end of the second photocoupler 2121 is connected to the auxiliary power supply 22;
a first input end of the second photoelectric coupler 2121 is connected to the level signal;
the second photocoupler 2121 is configured to control and conduct the connection between the power circuit 24 and the auxiliary power supply 22 according to the level signal.
As shown in FIG. 2, the second wake-up sub-circuit 212 may include a second photo coupler 2121 and a wake-up resistor 2122. The power circuit 24 may be coupled to a first terminal of the wake-up resistor 2122, a first input of the second photo coupler 2121 may be coupled to the telematics processor 28, a second input of the second photo coupler 2121 may be coupled to a second terminal of the wake-up resistor 2122, a first output of the second photo coupler 2121 may be coupled to ground, and a second output of the second photo coupler 2121 may be coupled to the auxiliary power source 22.
A first input terminal of the second photocoupler 2121 can be connected to a level signal, and the second photocoupler 2121 is used for controlling connection between the power supply circuit 24 and the auxiliary power supply 22 according to the level signal.
The second photo-coupler 2121 may include a second light emitting diode 21211 and a second light receiving transistor 21212.
The second light emitting diode 21211 is used for emitting a light signal to the base of the second light receiving transistor 21212 according to the received level signal. After the base of the second photo transistor 21212 receives the optical signal, the collector and emitter of the second photo transistor 21212 are turned on. The power circuit 24 can send a driving voltage signal, which can be 12 volts, to the auxiliary power supply 22 through the wake-up resistor 2122 and the conducting second photo transistor 21212.
Optionally, the telematics processor 28 is further configured to receive a second control signal sent by the terminal;
the telematics processor 28 is configured to send the level signal to a first input terminal of the second photo coupler 2121 according to the second control signal.
The telematics processor 28 is also configured to receive a second control signal sent by the terminal when the entire vehicle is powered down. The telematics processor 28 is configured to transmit the level signal (Wake-WPT) to a first input terminal of the second photocoupler 2121 according to a second control signal. When the entire vehicle is powered off, the telematics processor 28 may be awakened via the terminal and the telematics processor 28 may then awaken the wireless charging system. The wireless charging system can be awakened when the whole vehicle is in a power-off state, and the operation process is simple, convenient and fast.
Optionally, the vehicle-end device 2 further includes a vehicle-end control board 29, the vehicle-end control board 29 is connected to the auxiliary power supply 22, and the vehicle-end control board 29 is connected to the second wireless communication module 23;
the auxiliary power supply 22 is used for sending a starting signal to the vehicle-end control board 29 according to the driving voltage signal;
the vehicle-end control board 29 is configured to send the first control signal to the second wireless communication module 23 according to the start signal;
the second wireless communication module 23 is further configured to send a third control signal to the vehicle-end control board 29 according to the wireless charging confirmation signal;
the vehicle-end control board 29 is configured to send the vehicle-completion awakening signal to the vehicle-completion controller 25 according to the third control signal.
As shown in fig. 2, the cart-end apparatus 2 may further include a cart-end control board 29, the cart-end control board 29 may be connected with the auxiliary power supply 22, and the cart-end control board 29 may be connected with the second wireless communication module 23. The auxiliary power supply 22 is configured to send a start signal to the vehicle-end control board 29 according to the driving voltage signal, and the vehicle-end control board 29 is configured to send a first control signal to the second wireless communication module 23 according to the start signal. The second wireless communication module 23 is configured to send a wireless charging request signal to the first wireless communication module 11 according to the first control signal. The first wireless communication module 11 is configured to send a wireless charging confirmation signal to the second wireless communication module 23 according to the wireless charging request signal. The second wireless communication module 23 is further configured to send a third control signal to the Vehicle-end control board 29 according to the wireless charging confirmation signal, and the Vehicle-end control board 29 is configured to send a Vehicle-completion awakening signal (Wake _ Vehicle) to the Vehicle-completion controller 25 according to the third control signal. For example, as previously described, the cart-end equipment 2 may also include a connector 30, and the connector 30 may be connected to the cart-end control board 29. The cart-end control board 29 can send a wake-up-for-cart signal to the connector 30 based on the third control signal. The connector 30 may then send a wake-up vehicle control signal to the vehicle control unit 25 via one of its pins.
Optionally, the vehicle control unit 25 is configured to send a fourth control signal to the vehicle-end control board 29 according to the vehicle wake-up signal;
the vehicle-end control board 29 is configured to send a fifth control signal to the second wireless communication module 23 according to the fourth control signal;
the second wireless communication module 23 is configured to send a sixth control signal to the first wireless communication module 11 according to the fifth control signal;
the first wireless communication module 11 is configured to send a seventh control signal to the transmission driving circuit 12 according to the sixth control signal;
the transmitting driving circuit 12 is configured to provide a wireless charging signal to the transmitting coil 13 according to the seventh control signal;
the transmitting coil 13 is used for transmitting the wireless charging signal to the receiving coil 26.
As shown in fig. 1, the vehicle control unit 25 is configured to send a fourth control signal to the vehicle-end control board 29 according to the vehicle wake-up signal. For example, the vehicle control unit 25 may send a fourth control signal to a controller area network low level (CANL) pin or a controller area network high level (CANH) pin of the connector 30 according to the wake-up vehicle control signal. The connector 30 may then send this fourth control signal to the cart-end control board 29. The vehicle-end control board 29 is configured to send a fifth control signal to the second wireless communication module 23 according to the fourth control signal. The second wireless communication module 23 is configured to send a sixth control signal to the first wireless communication module 11 according to the fifth control signal. The first wireless communication module 11 is configured to send a seventh control signal to the transmission driving circuit 12 according to the sixth control signal. The transmitting driving circuit 12 is configured to provide a wireless charging signal to the transmitting coil 13 according to the seventh control signal, and then the transmitting coil 13 may send the wireless charging signal to the receiving coil 26, that is, the ground device 1 may wirelessly charge the vehicle-end device 2.
According to the wireless charging system provided by the embodiment of the invention, the wake-up circuit can receive the wake-up signal and can control and conduct the connection between the power circuit and the auxiliary power supply under the control of the wake-up signal, so that the auxiliary power supply can start the second wireless communication module according to the driving voltage signal sent by the power circuit, the second wireless communication module can send a signal for waking up the whole vehicle to the whole vehicle controller, and the whole vehicle can wake up the wireless charging system.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (6)

1. A wireless charging system, comprising:
ground equipment and vehicle-end equipment;
the ground equipment comprises a first wireless communication module;
the vehicle-end equipment comprises a wake-up circuit, an auxiliary power supply, a second wireless communication module, a power circuit and a vehicle control unit, wherein the wake-up circuit is connected with the auxiliary power supply, the auxiliary power supply is connected with the second wireless communication module, the second wireless communication module is connected with the vehicle control unit, and the power circuit is connected with the wake-up circuit;
the wake-up circuit is used for receiving a wake-up signal and controlling and conducting connection between the power circuit and the auxiliary power supply under the control of the wake-up signal so that the power circuit sends a driving voltage signal to the auxiliary power supply;
the auxiliary power supply is used for sending a first control signal to the second wireless communication module according to the driving voltage signal;
the second wireless communication module is used for sending a wireless charging request signal to the first wireless communication module according to the first control signal;
the first wireless communication module is used for sending a wireless charging confirmation signal to the second wireless communication module according to the wireless charging request signal;
the second wireless communication module is used for sending a finished automobile awakening signal to the finished automobile controller according to the wireless charging confirmation signal;
the ground equipment further comprises a transmitting driving circuit and a transmitting coil, and the vehicle-end equipment further comprises a receiving coil and a signal conversion circuit;
the wake-up signal comprises a start-up voltage signal;
the transmitting driving circuit is used for providing a power signal for the transmitting coil so as to enable the transmitting coil to transmit the power signal;
the receiving coil is used for receiving the power signal and transmitting the power signal to the signal conversion circuit;
the signal conversion circuit is used for converting the power signal into the starting voltage signal;
the wake-up circuit comprises a first wake-up sub-circuit, and the signal conversion circuit is connected with the first wake-up sub-circuit; the first wake-up sub-circuit is used for controlling and conducting connection between the power supply circuit and the auxiliary power supply according to the starting voltage signal;
the vehicle-end equipment further comprises a remote information processor, the wake-up circuit comprises a second wake-up sub-circuit, and the remote information processor is connected with the second wake-up sub-circuit;
the wake-up signal comprises a level signal;
the telematics processor is to send the level signal to the second wake-up sub-circuit;
the second wake-up sub-circuit is used for controlling and conducting connection between the power supply circuit and the auxiliary power supply according to the level signal;
the vehicle-end equipment further comprises a vehicle-end control board, the vehicle-end control board is connected with the auxiliary power supply, and the vehicle-end control board is connected with the second wireless communication module;
the auxiliary power supply is used for sending a starting signal to the vehicle end control panel according to the driving voltage signal;
the vehicle-end control board is used for sending the first control signal to the second wireless communication module according to the starting signal;
the second wireless communication module is also used for sending a third control signal to the vehicle-end control board according to the wireless charging confirmation signal;
the vehicle end control board is used for sending the vehicle-finished-vehicle awakening signal to the vehicle-finished-vehicle controller according to the third control signal;
the vehicle control unit is used for sending a fourth control signal to the vehicle end control panel according to the vehicle awakening signal;
the vehicle-end control board is used for sending a fifth control signal to the second wireless communication module according to the fourth control signal;
the second wireless communication module is used for sending a sixth control signal to the first wireless communication module according to the fifth control signal;
the first wireless communication module is used for sending a seventh control signal to the emission driving circuit according to the sixth control signal;
the transmitting driving circuit is used for providing a wireless charging signal for the transmitting coil according to the seventh control signal;
the transmitting coil is used for transmitting the wireless charging signal to the receiving coil.
2. The wireless charging system of claim 1, wherein the first wake-up sub-circuit comprises a voltage divider module and a switch module, wherein,
the voltage division module is used for dividing the starting voltage signal to obtain a divided voltage signal;
the switch module is used for controlling and conducting the connection between the power circuit and the auxiliary power supply according to the divided voltage signal.
3. The wireless charging system of claim 2, wherein the voltage dividing module comprises a first voltage dividing resistor, a second voltage dividing resistor, a voltage dividing capacitor and a voltage dividing voltage regulator tube;
the first end of the first voltage dividing resistor is connected with the starting voltage signal;
the second end of the first voltage-dividing resistor is connected with the first end of the second voltage-dividing resistor and the first end of the voltage-dividing capacitor, the first end of the voltage-dividing capacitor is connected with the first end of the second voltage-dividing resistor, the second end of the voltage-dividing capacitor is connected with the anode of the voltage-dividing voltage-stabilizing tube, and the cathode of the voltage-dividing voltage-stabilizing tube is connected with the second end of the second voltage-dividing resistor;
and the cathode of the voltage division voltage stabilizing tube is used for outputting the voltage division voltage signal.
4. The wireless charging system of claim 3, wherein the switching module comprises a switching transistor, a switching regulator, a switching resistor, a first optocoupler, and an output resistor;
the base electrode of the switching triode is connected with the divided voltage signal;
a collector of the switching triode is connected with the second end of the first voltage-dividing resistor, a base of the switching triode is connected with a cathode of the voltage-dividing voltage-stabilizing tube, an emitter of the switching triode is connected with an anode of the switching voltage-stabilizing tube, and a cathode of the switching voltage-stabilizing tube is connected with the first end of the switching resistor;
the first input end of the first photoelectric coupler is connected with the second end of the switch resistor, the second input end of the first photoelectric coupler is connected with the first end of the output resistor, the first output end of the first photoelectric coupler is connected with the anode of the voltage-dividing voltage-stabilizing tube and the second end of the voltage-dividing capacitor, the second output end of the first photoelectric coupler is connected with the auxiliary power supply, and the second end of the output resistor is connected with the power circuit.
5. The wireless charging system of claim 1, wherein the second wake-up sub-circuit comprises a second photo coupler and a wake-up resistor, the power circuit is connected to a first end of the wake-up resistor, a first input end of the second photo coupler is connected to the telematics unit, a second input end of the second photo coupler is connected to a second end of the wake-up resistor, a first output end of the second photo coupler is connected to ground, and a second output end of the second photo coupler is connected to the auxiliary power supply;
a first input end of the second photoelectric coupler is connected with the level signal;
and the second photoelectric coupler is used for controlling and conducting the connection between the power circuit and the auxiliary power supply according to the level signal.
6. The wireless charging system of claim 5, wherein the telematics processor is further configured to receive a second control signal transmitted by the terminal;
and the remote information processor is used for sending the level signal to the first input end of the second photoelectric coupler according to the second control signal.
CN201810935437.2A 2018-08-16 2018-08-16 Wireless charging system Active CN109038742B (en)

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CN103187778A (en) * 2011-12-28 2013-07-03 海洋王照明科技股份有限公司 Charging circuit and charger
US9924457B2 (en) * 2015-05-06 2018-03-20 Intel IP Corporation Apparatus and product of power management in a wireless network
JP2018042446A (en) * 2016-05-25 2018-03-15 デルファイ・テクノロジーズ・インコーポレーテッド Pairing method of transmitter and receiver of wireless charging system, and device for executing the same
CN106921200B (en) * 2017-05-04 2021-10-22 北京新能源汽车股份有限公司 Wireless charging circuit of electric automobile, electric automobile and charging system
CN107124047B (en) * 2017-06-27 2023-12-29 青岛鲁渝能源科技有限公司 Wireless power transmission system and radio frequency communication method thereof

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