CN111439141A - Wireless charging control system and device - Google Patents

Wireless charging control system and device Download PDF

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Publication number
CN111439141A
CN111439141A CN202010272734.0A CN202010272734A CN111439141A CN 111439141 A CN111439141 A CN 111439141A CN 202010272734 A CN202010272734 A CN 202010272734A CN 111439141 A CN111439141 A CN 111439141A
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CN
China
Prior art keywords
electric energy
bluetooth module
voltage
circuit
comparison result
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Pending
Application number
CN202010272734.0A
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Chinese (zh)
Inventor
王翰清
刘雯
朱永生
赵策洲
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Xian Jiaotong Liverpool University
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Xian Jiaotong Liverpool University
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Priority to CN202010272734.0A priority Critical patent/CN111439141A/en
Publication of CN111439141A publication Critical patent/CN111439141A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • B60L53/126—Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/66—Data transfer between charging stations and vehicles
    • 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
    • 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
    • H02J50/80—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
    • 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
    • Y02T90/12—Electric charging stations
    • 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 application relates to a wireless charging control system and device belongs to wireless charging technology field, and this system includes: the power supply terminal is used for supplying power and the power receiving terminal is used for receiving the power; the power supply end comprises a power supply circuit and a first Bluetooth module; the electric energy receiving end comprises an electric energy receiving circuit and a second Bluetooth module; the first Bluetooth module and the second Bluetooth module form a voltage feedback module so that the electric energy providing end can adjust the output voltage provided by the electric energy providing circuit for the electric energy receiving circuit; the problem that connection and matching are carried out by simultaneously using an NFC module and a Bluetooth module in the existing wireless charging mode, and the connection matching efficiency is low can be solved; since only the bluetooth module is used as a medium for matching and communication, the efficiency of connection matching can be improved. In addition, the regulation of the output voltage can be realized by constructing a voltage feedback module, and the stability and the safety of wireless charging are ensured.

Description

Wireless charging control system and device
Technical Field
The application relates to a wireless charging control system and device, and belongs to the technical field of wireless charging.
Background
The vehicle is used as a tool for riding instead of walk in daily life of people, and brings great convenience due to the characteristics of convenience and quickness. Conventional vehicles are powered by gasoline as the primary energy source. But the generated tail gas has great influence on the environment, such as greenhouse effect, global warming and the like. Under such circumstances, electric vehicles using electricity as a main energy source are gradually entering the lives of people.
There are two different charging modes for electric vehicles, wired charging and wireless charging. Wired charging needs to be connected with the vehicle through charging piles to carry out energy supply to the vehicle. For wireless charging, the vehicle can be charged directly in a particular area without a cable connection. Compared with wired charging, wireless charging can provide more convenient charging experience. Meanwhile, the application scene of the method is wider.
In the conventional charging method, for electric vehicles charged by wires, the electric vehicles can be charged only at specific positions where charging piles are distributed due to the constraint of cables. Meanwhile, when the cable is used for charging, the problems of electric leakage, energy waste and the like caused by untight connection can also occur.
For the electric vehicle with the wireless charging mode, the electric vehicle needs to use the NFC module and the bluetooth module to connect and match, so the matching process is too complex and cumbersome.
Disclosure of Invention
The application provides a wireless charging control system and device, can solve and need use NFC and bluetooth module to connect and match simultaneously among the current wireless charging mode, connect the lower problem of matching efficiency. The application provides the following technical scheme:
in a first aspect, a wireless charging control system is provided, the system comprising: the power supply terminal is used for supplying power and the power receiving terminal is used for receiving the power;
the power supply end comprises a power supply circuit and a first Bluetooth module;
the electric energy receiving end comprises an electric energy receiving circuit and a second Bluetooth module;
the first Bluetooth module and the second Bluetooth module form a voltage feedback module so that the electric energy providing end can adjust the output voltage provided by the electric energy providing circuit for the electric energy receiving circuit.
Optionally, the voltage feedback module further includes: the analog-to-digital conversion circuit and the comparison circuit are arranged in the electric energy receiving end, the analog-to-digital conversion circuit is connected with the second Bluetooth module, and the comparison circuit is connected with the analog-to-digital conversion circuit;
the analog-to-digital conversion circuit is used for: converting the electric energy signal provided by the electric energy providing end into a digital signal to obtain an output voltage value;
the comparison circuit is configured to: comparing the voltage value output by the analog-to-digital conversion circuit with a pre-stored standard voltage range to obtain a voltage comparison result;
the second Bluetooth module is used for: and when the voltage comparison result indicates that the output voltage value is not in the standard voltage range, sending the voltage comparison result to the electric energy providing end.
Optionally, the voltage feedback module further includes: the pulse width modulation circuit is arranged in the electric energy sending end and is connected with the first Bluetooth module;
the first Bluetooth module is used for: receiving a voltage comparison result sent by the second Bluetooth module;
the pulse width modulation circuit is configured to: and adjusting the output voltage of the electric energy supply circuit according to the voltage comparison result.
Optionally, the power receiving end is further configured to: and stopping charging when the voltage comparison result indicates that the output voltage value is not in the standard voltage range and the difference value between the output voltage value and the standard voltage range is greater than a preset threshold value.
Optionally, the voltage feedback module further includes: and the first serial communication interface is arranged between the analog-to-digital conversion circuit and the second Bluetooth module.
Optionally, the voltage feedback module further includes: and the second serial communication interface is arranged between the first Bluetooth module and the pulse width modulation circuit.
In a second aspect, a wireless charging control device is provided, which is used in the wireless charging control system provided in the first aspect, and the device includes a first bluetooth module connected to an electric energy providing terminal;
the first Bluetooth module is used for: and receiving the voltage comparison result sent by the electric energy receiving end so as to regulate the output voltage provided by the electric energy providing end according to the voltage comparison result.
Optionally, the apparatus further comprises a pulse width modulation circuit; the pulse width modulation circuit is configured to: and adjusting the output voltage according to the voltage comparison result.
In a third aspect, a wireless charging control device is provided, which is used in the wireless charging control system provided in the first aspect, and the device includes a second bluetooth module connected to an electric energy receiving terminal;
the second Bluetooth module is used for: and sending the voltage comparison result to an electric energy providing end so that the electric energy providing end can adjust the output voltage according to the voltage comparison result.
Optionally, the apparatus further comprises: the analog-to-digital conversion circuit is connected with the second Bluetooth module, and the comparison circuit is connected with the analog-to-digital conversion circuit;
the analog-to-digital conversion circuit is used for: converting the electric energy signal provided by the electric energy providing end into a digital signal to obtain an output voltage value;
the comparison circuit is configured to: comparing the voltage value output by the analog-to-digital conversion circuit with a pre-stored standard voltage range to obtain a voltage comparison result;
the second bluetooth module is further configured to: and when the voltage comparison result indicates that the output voltage value is not in the standard voltage range, sending the voltage comparison result to the electric energy providing end.
The beneficial effect of this application lies in: the method comprises the steps that a first Bluetooth module is arranged at an electric energy providing end; a second Bluetooth module is arranged at the electric energy receiving end; the first Bluetooth module and the second Bluetooth module form a voltage feedback module so as to adjust the output voltage provided by the electric energy providing circuit for the electric energy receiving circuit by the electric energy providing end; the problem that connection and matching are carried out by simultaneously using an NFC module and a Bluetooth module in the existing wireless charging mode, and the connection matching efficiency is low can be solved; since only the bluetooth module is used as a medium for matching and communication, the efficiency of connection matching can be improved.
In addition, the requirement of the electric energy receiving end on the output voltage of the electric energy providing end can be fed back to the electric energy providing end by constructing the voltage feedback module, so that the output voltage is regulated; guarantee wireless charging's stability and security.
The foregoing description is only an overview of the technical solutions of the present application, and in order to make the technical solutions of the present application more clear and clear, and to implement the technical solutions according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present application and the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a wireless charging control system according to an embodiment of the present application.
Detailed Description
The following detailed description of embodiments of the present application will be described in conjunction with the accompanying drawings and examples. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.
Fig. 1 is a schematic structural diagram of a wireless charging control system according to an embodiment of the present application, and as shown in fig. 1, the system at least includes: a power supply terminal 110 for supplying power and a power receiving terminal 120 for receiving power.
The power supply terminal 110 includes a power supply circuit 111 and a first bluetooth module 112; the power receiving terminal 120 includes a power receiving circuit 121 and a second bluetooth module 122; the first bluetooth module 112 and the second bluetooth module 122 form a voltage feedback module for the power providing terminal 110 to adjust the output voltage provided by the power providing circuit 111 to the power receiving circuit 121.
Optionally, the power receiving end 120 may be an electric vehicle, and of course, may also be other devices supporting wireless charging, and the implementation manner of the power receiving end 120 is not limited in this embodiment.
The voltage feedback module is an automatic control system established based on a feedback principle. Feedback refers to control based on information about changes in system output, i.e., by comparing deviations between system behavior (output) and expected behavior and eliminating the deviations to achieve desired system performance. In the voltage feedback module, a signal forward path from an input end to an output end exists, and a signal feedback path from an output end to an input end is also included, and the signal forward path and the signal feedback path form a closed loop. In the present application, the voltage feedback module is arranged to feed back the requirement of the electric energy receiving terminal 120 for the output voltage of the electric energy providing terminal 110 to the electric energy providing terminal 110, so as to adjust the output voltage; guarantee wireless charging's stability and security.
In addition, the wireless charging control system in the application can realize information transmission by arranging the bluetooth module, and can improve the connection matching efficiency between the electric energy providing terminal 110 and the electric energy receiving terminal 120.
Optionally, the voltage feedback module further includes an analog-to-digital conversion circuit 123 and a comparison circuit 124 installed in the power receiving terminal 120. The analog-to-digital conversion circuit 123 is connected to the second bluetooth module 122, and the comparison circuit 124 is connected to the analog-to-digital conversion circuit 123.
The analog-to-digital conversion circuit 123 is configured to: the power signal provided by the power providing terminal 110 is converted into a digital signal to obtain an output voltage value.
Analog-to-digital conversion refers to the process of converting an analog signal to a digital signal. Since only the digital signal can be processed by the software, in the present application, the power receiving end 120 can obtain the digital signal of the output voltage by providing the analog-to-digital conversion circuit 123, so that the comparison circuit 124 can process the received signal.
Optionally, the analog-to-digital conversion circuit 123 can only be used for receiving the input voltage value between 0V and 3V, and meanwhile, the analog-to-digital conversion circuit 123 can only be used for receiving and converting the voltage value after passing through the rectification module. At this time, the power receiving end 120 further includes a sorting module connected to the analog-to-digital conversion circuit 123.
The comparison circuit 124 is configured to: the voltage value output by the analog-to-digital conversion circuit 123 is compared with a pre-stored standard voltage range to obtain a voltage comparison result.
Alternatively, different types of electric vehicles may correspond to different standard voltage ranges.
The second bluetooth module 122 is configured to: when the voltage comparison result indicates that the output voltage value is not within the standard voltage range, the voltage comparison result is sent to the power providing terminal 110.
The voltage feedback module further comprises: a first serial communication interface 125 installed between the analog-to-digital conversion circuit 123 and the second bluetooth module 122.
A first Serial Communication Interface (SCI) 125 for signal transmission; the main functions of the program are to transmit and receive data. And transmits the second bluetooth module 122 as a medium.
Optionally, the power receiving end 120 is further configured to: and stopping charging when the voltage comparison result indicates that the output voltage value is not in the standard voltage range and the difference value between the output voltage value and the standard voltage range is greater than a preset threshold value.
In other words, based on the difference of the voltage comparison results, the power receiving end 120 has the following three cases:
1. the output voltage value of the power providing terminal 120 is within the standard range, and the power receiving terminal 120 can perform constant voltage charging without adjusting the input voltage.
2. The output voltage value of the power supply terminal 120 is outside the standard range, but the difference between the output voltage value and the standard voltage range is less than or equal to the preset threshold. The power receiving end 120 feeds back the voltage comparison result through the second bluetooth module 122, and the output voltage of the power providing end 120 needs to be adjusted.
3. The output voltage value of the power supply terminal 120 is outside the standard range, but the difference between the output voltage value and the standard voltage range is greater than the preset threshold. The power receiving terminal 120 cuts off the charging of the system, protecting the vehicle and the charging equipment.
In order to ensure that the power supply terminal can execute the voltage process, in this application, the voltage feedback module further includes: and a pulse width modulation circuit 113 installed in the power transmitting terminal 110 and connected to the first bluetooth module 112.
The first bluetooth module 112 is configured to: and receiving the voltage comparison result sent by the second bluetooth module 122.
The pulse width modulation circuit 113 is configured to: and adjusting the output voltage of the electric energy supply circuit according to the voltage comparison result.
The pulse width modulation is an analog control mode, and the bias of a transistor base electrode or an MOS tube grid electrode is modulated according to the change of corresponding load to change the conduction time of the transistor or the MOS tube, so that the change of the output of the switching voltage-stabilized power supply is realized. This way the output voltage of the power supply can be kept constant when the operating conditions change, which is a very effective technique for controlling an analog circuit by means of the digital signal of the microprocessor.
Optionally, the voltage feedback module further comprises a second serial communication interface 114 installed between the first bluetooth module 112 and the pulse width modulation circuit 113.
The second serial communication interface 114 is used for signal transmission; the main functions of the program are to transmit and receive data. And transmits the first bluetooth module 112 as an intermediary.
The pulse width modulation circuit 113 is connected to the second serial communication interface 114 through a program, and is used for receiving the signal from the second serial communication interface 114 and making corresponding adjustment to the system according to the signal. The extent of the adjustment depends on the voltage comparison result.
The bluetooth module (including the first bluetooth module 112 and the second bluetooth module 122) used in the present application is established on the basis of a serial communication interface, and the two are connected with each other by receiving data (RXD) transmitted from an external device and transmitting data (TXD) to the external device. The first bluetooth module 112 and the second bluetooth module 122 are matched by a designated key and address.
It should be added that, in the present application, the constant voltage charging is performed when the power receiving terminal 120 is wirelessly charged.
In addition, the first bluetooth module 112, the second serial communication interface 114, and the pulse width modulation circuit 113 may be integrated in a separate Digital Signal Processor (DSP); the second bluetooth module 122, the first serial communication interface 125, the analog-to-digital conversion circuit 123 and the comparison circuit 124 may also be integrated in a separate Digital Signal Processor (DSP).
In summary, the wireless charging control system provided by the application sets the first bluetooth module at the electric energy providing end; a second Bluetooth module is arranged at the electric energy receiving end; the first Bluetooth module and the second Bluetooth module form a voltage feedback module so as to adjust the output voltage provided by the electric energy providing circuit for the electric energy receiving circuit by the electric energy providing end; the problem that connection and matching are carried out by simultaneously using an NFC module and a Bluetooth module in the existing wireless charging mode, and the connection matching efficiency is low can be solved; since only the bluetooth module is used as a medium for matching and communication, the efficiency of connection matching can be improved.
In addition, the requirement of the electric energy receiving end 120 for the output voltage of the electric energy providing end 110 can be fed back to the electric energy providing end 110 by constructing a voltage feedback module, so that the output voltage can be adjusted; guarantee wireless charging's stability and security.
Alternatively, in the wireless charging control system, the power supply terminal 110 and the power receiving terminal 120 are respectively implemented as separate embodiments.
Alternatively, based on the above wireless charging control system, the first bluetooth module 112, the second serial communication interface 114, and the pulse width modulation circuit 113 may be implemented as separate wireless charging control devices. In other words, the present application also provides a wireless charging control device, including: the first Bluetooth module is connected with the electric energy providing end; the first Bluetooth module is used for: and receiving a voltage comparison result sent by the electric energy receiving end so as to adjust the output voltage provided by the electric energy providing end according to the voltage comparison result.
Optionally, the apparatus further comprises a pulse width modulation circuit; the pulse width modulation circuit is used for: and regulating the output voltage according to the voltage comparison result.
Reference is made to the system embodiments described above.
Alternatively, based on the above wireless charging control system, the second bluetooth module 122, the first serial communication interface 125, the analog-to-digital conversion circuit 123 and the comparison circuit 124 may be implemented as a separate wireless charging control device. In other words, the present application also provides a wireless charging control device, including: the second Bluetooth module is connected with the electric energy receiving end;
the second Bluetooth module is used for: and sending the voltage comparison result to the electric energy providing end so as to adjust the output voltage according to the voltage comparison result.
Optionally, the wireless charging control device further includes: the analog-to-digital conversion circuit is connected with the second Bluetooth module, and the comparison circuit is connected with the analog-to-digital conversion circuit; the analog-to-digital conversion circuit is used for: converting the electric energy signal provided by the electric energy providing end into a digital signal to obtain an output voltage value; the comparison circuit is used for: comparing the voltage value output by the analog-to-digital conversion circuit with a pre-stored standard voltage range to obtain a voltage comparison result; the second bluetooth module is further configured to: and when the voltage comparison result indicates that the output voltage value is not in the standard voltage range, sending the voltage comparison result to the electric energy providing end.
Reference is made to the system embodiments described above.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A wireless charging control system, the system comprising: the power supply terminal is used for supplying power and the power receiving terminal is used for receiving the power;
the power supply end comprises a power supply circuit and a first Bluetooth module;
the electric energy receiving end comprises an electric energy receiving circuit and a second Bluetooth module;
the first Bluetooth module and the second Bluetooth module form a voltage feedback module so that the electric energy providing end can adjust the output voltage provided by the electric energy providing circuit for the electric energy receiving circuit.
2. The system of claim 1, wherein the voltage feedback module further comprises: the analog-to-digital conversion circuit and the comparison circuit are arranged in the electric energy receiving end, the analog-to-digital conversion circuit is connected with the second Bluetooth module, and the comparison circuit is connected with the analog-to-digital conversion circuit;
the analog-to-digital conversion circuit is used for: converting the electric energy signal provided by the electric energy providing end into a digital signal to obtain an output voltage value;
the comparison circuit is configured to: comparing the voltage value output by the analog-to-digital conversion circuit with a pre-stored standard voltage range to obtain a voltage comparison result;
the second Bluetooth module is used for: and when the voltage comparison result indicates that the output voltage value is not in the standard voltage range, sending the voltage comparison result to the electric energy providing end.
3. The system of claim 2, wherein the voltage feedback module further comprises: the pulse width modulation circuit is arranged in the electric energy sending end and is connected with the first Bluetooth module;
the first Bluetooth module is used for: receiving a voltage comparison result sent by the second Bluetooth module;
the pulse width modulation circuit is configured to: and adjusting the output voltage of the electric energy supply circuit according to the voltage comparison result.
4. The system of claim 2, wherein the power receiving end is further configured to: and stopping charging when the voltage comparison result indicates that the output voltage value is not in the standard voltage range and the difference value between the output voltage value and the standard voltage range is greater than a preset threshold value.
5. The system of claim 2, wherein the voltage feedback module further comprises: and the first serial communication interface is arranged between the analog-to-digital conversion circuit and the second Bluetooth module.
6. The system of claim 3, wherein the voltage feedback module further comprises: and the second serial communication interface is arranged between the first Bluetooth module and the pulse width modulation circuit.
7. A wireless charging control device, for use in the wireless charging control system of any one of claims 1 to 6, the device comprising a first bluetooth module connected to the power supply terminal;
the first Bluetooth module is used for: and receiving the voltage comparison result sent by the electric energy receiving end so as to regulate the output voltage provided by the electric energy providing end according to the voltage comparison result.
8. The apparatus of claim 7, further comprising a pulse width modulation circuit;
the pulse width modulation circuit is configured to: and adjusting the output voltage according to the voltage comparison result.
9. A wireless charging control device, for use in the wireless charging control system of any one of claims 1 to 6, the device comprising a second bluetooth module connected to the power receiving terminal;
the second Bluetooth module is used for: and sending the voltage comparison result to an electric energy providing end so that the electric energy providing end can adjust the output voltage according to the voltage comparison result.
10. The apparatus of claim 9, further comprising: the analog-to-digital conversion circuit is connected with the second Bluetooth module, and the comparison circuit is connected with the analog-to-digital conversion circuit;
the analog-to-digital conversion circuit is used for: converting the electric energy signal provided by the electric energy providing end into a digital signal to obtain an output voltage value;
the comparison circuit is configured to: comparing the voltage value output by the analog-to-digital conversion circuit with a pre-stored standard voltage range to obtain a voltage comparison result;
the second bluetooth module is further configured to: and when the voltage comparison result indicates that the output voltage value is not in the standard voltage range, sending the voltage comparison result to the electric energy providing end.
CN202010272734.0A 2020-04-09 2020-04-09 Wireless charging control system and device Pending CN111439141A (en)

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