CN106655359B - Wireless charging method and device based on NFC communication - Google Patents

Wireless charging method and device based on NFC communication Download PDF

Info

Publication number
CN106655359B
CN106655359B CN201611076292.2A CN201611076292A CN106655359B CN 106655359 B CN106655359 B CN 106655359B CN 201611076292 A CN201611076292 A CN 201611076292A CN 106655359 B CN106655359 B CN 106655359B
Authority
CN
China
Prior art keywords
charging
charged
voltage
preset
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201611076292.2A
Other languages
Chinese (zh)
Other versions
CN106655359A (en
Inventor
虢礼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nubia Technology Co Ltd
Original Assignee
Nubia Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nubia Technology Co Ltd filed Critical Nubia Technology Co Ltd
Priority to CN201611076292.2A priority Critical patent/CN106655359B/en
Publication of CN106655359A publication Critical patent/CN106655359A/en
Application granted granted Critical
Publication of CN106655359B publication Critical patent/CN106655359B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/0088—
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention discloses a wireless charging device based on NFC communication, which is applied to a wireless charger, wherein the wireless charger is provided with a first NFC module, a charging circuit and an antenna connected with the charging circuit, and comprises: the device comprises a sending module, a receiving module and a processing module, wherein the sending module is used for sending preset voltage information to the device to be charged through a first NFC module when the device to be charged is detected; the first control module is used for controlling the charging circuit to send a first electromagnetic signal through the antenna based on the charging voltage when the charging voltage received by the first NFC module is smaller than or equal to a first preset voltage. The invention also discloses a wireless charging method based on NFC communication. The low-voltage direct charging of the equipment to be charged is realized, so that the heating of the equipment to be charged in the charging process can be reduced through a smaller charging voltage, the energy loss in the charging process is reduced, and the charging efficiency of the equipment to be charged is improved.

Description

Wireless charging method and device based on NFC communication
Technical Field
The invention relates to the technical field of communication, in particular to a wireless charging method and device based on NFC communication.
Background
Currently, there are three wireless charging standards: the Power Matters Alliance (PMA) standard, the Qi standard, the Alliance for Wireless Power (A4WP) standard. Wherein the Qi standard and the A4WP standard are relatively widely used. The Qi standard is a Wireless charging standard provided by the Wireless charging alliance (WPC), which is the first global organization for promoting Wireless charging technology, and has two major characteristics of convenience and universality, and as long as one Qi identifier is provided, the Wireless charger of the Qi standard can be used for charging; however, the wireless charger of Qi standard can only charge the devices identified by Qi, and only one device at a time. The wireless charger of the A4WP standard emphatically introduces the technology of electromagnetic resonance wireless charging.
When treating charging equipment and carrying out wireless charging, the current high-voltage charging mode makes treating charging equipment generate heat comparatively seriously, and especially the battery voltage of treating charging equipment is lower, because treating charging equipment generates heat and cause the waste of energy, and then leads to treating charging equipment's charge efficiency lower.
Disclosure of Invention
The invention provides a wireless charging method and device based on NFC communication, and aims to solve the technical problem that the charging efficiency of a device to be charged is low due to the fact that the device to be charged is heated seriously in a charging mode of low battery voltage and high voltage of the device to be charged.
In order to achieve the above object, the present invention provides a wireless charging device based on NFC communication, which is applied to a wireless charger, where the wireless charger is provided with a first NFC module, a charging circuit, and an antenna connected to the charging circuit, and the wireless charging device based on NFC communication includes:
the device to be charged comprises a sending module, a first NFC module and a second NFC module, wherein the sending module is used for sending preset voltage information to the device to be charged through the first NFC module when the device to be charged is detected, and when the preset voltage information is received, the device to be charged selects charging voltage based on the preset voltage information and the battery voltage of the device to be charged and feeds back the charging voltage through the second NFC module of the device to be charged;
the first control module is used for controlling the charging circuit to send a first electromagnetic signal through the antenna based on the charging voltage when the charging voltage received by the first NFC module is smaller than or equal to a first preset voltage, so that the device to be charged is charged according to the charging voltage.
In one embodiment, the NFC communication based wireless charging apparatus further includes:
the acquisition module is used for acquiring the current battery voltage of the equipment to be charged through the first NFC module;
and the second control module is used for controlling the charging circuit to send a second electromagnetic signal through the antenna based on a third preset voltage when the current battery voltage of the equipment to be charged is greater than the second preset voltage, so that the equipment to be charged is charged at a constant voltage according to the third preset voltage.
In one embodiment, the NFC communication based wireless charging apparatus further includes:
the second acquisition module is used for acquiring the current charging current of the equipment to be charged through the first NFC module;
and the third control module is used for controlling the charging circuit to send an electromagnetic signal through the antenna based on a third preset voltage and a second preset current when the current charging current of the equipment to be charged is greater than the first preset current, so that the equipment to be charged is charged according to the third preset voltage and the second preset current, wherein the second preset current is less than the first preset current.
In one embodiment, the NFC communication based wireless charging apparatus further includes:
the third acquiring module is used for acquiring the current temperature of the equipment to be charged through the first NFC module;
and the fourth control module is used for controlling the charging circuit to reduce the current so as to reduce the charging current of the equipment to be charged when the current temperature of the equipment to be charged is greater than a preset temperature value.
In an embodiment, the antenna includes a WPC antenna and an A4WP antenna, and the NFC communication wireless charging device further includes:
the charging circuit is used for sending a third electromagnetic signal corresponding to the WPC charging mode through the WPC antenna every other first preset time, and when the third electromagnetic signal is received, the equipment to be charged feeds back charging information comprising the WPC charging mode through the second NFC module;
the sixth control module is configured to control the charging circuit to send a fourth electromagnetic signal corresponding to the A4WP charging mode through the A4WP antenna when the duration of sending the third electromagnetic signal is longer than a second preset duration each time, where when receiving the fourth electromagnetic signal, the device to be charged feeds back charging information including the A4WP charging mode through the second NFC module.
In addition, in order to achieve the above object, the present invention further provides a wireless charging method based on NFC communication, which is applied to a wireless charger, where the wireless charger is provided with a first NFC module, a charging circuit, and an antenna connected to the charging circuit, and the wireless charging method based on NFC communication includes the following steps:
when the device to be charged is detected, sending preset voltage information to the device to be charged through a first NFC module, wherein when the preset voltage information is received, the device to be charged selects charging voltage based on the preset voltage information and the battery voltage of the device to be charged, and feeding back the charging voltage through a second NFC module of the device to be charged;
when the charging voltage received by the first NFC module is smaller than or equal to a first preset voltage, the charging circuit is controlled to send a first electromagnetic signal through the antenna based on the charging voltage, so that the device to be charged is charged according to the charging voltage.
In an embodiment, after the step of controlling the charging circuit to transmit the first electromagnetic signal through the antenna based on the charging voltage, the NFC communication-based wireless charging method further includes:
acquiring the current battery voltage of the equipment to be charged through a first NFC module;
when the current battery voltage of the equipment to be charged is greater than the second preset voltage, the charging circuit is controlled to send a second electromagnetic signal through the antenna based on a third preset voltage, so that the equipment to be charged is charged at a constant voltage according to the third preset voltage.
In an embodiment, after the step of controlling the charging circuit to transmit the second electromagnetic signal through the antenna based on the third preset voltage, the NFC communication-based wireless charging method further includes:
acquiring the current charging current of the equipment to be charged through a first NFC module;
when the current charging current of the device to be charged is larger than the first preset current, the charging circuit is controlled to send an electromagnetic signal through the antenna based on a third preset voltage and a second preset current, so that the device to be charged is charged according to the third preset voltage and the second preset current, wherein the second preset current is smaller than the first preset current.
In an embodiment, after the step of controlling the charging circuit to transmit the second electromagnetic signal through the antenna based on the third preset voltage, the NFC communication-based wireless charging method further includes:
acquiring the current temperature of the equipment to be charged through a first NFC module;
and when the current temperature of the equipment to be charged is higher than a preset temperature value, controlling the charging circuit to reduce the current so as to reduce the charging current of the equipment to be charged.
In an embodiment, the antennas include a WPC antenna and an A4WP antenna, and before the step of sending the preset voltage information to the device to be charged through the first NFC module, the NFC communication-based wireless charging method further includes:
controlling the charging circuit to send a third electromagnetic signal corresponding to the WPC charging mode through a WPC antenna every other first preset time, wherein when the third electromagnetic signal is received, the equipment to be charged feeds back charging information comprising the WPC charging mode through the second NFC module;
and when the duration of sending the third electromagnetic signal is longer than a second preset duration, controlling the charging circuit to send a fourth electromagnetic signal corresponding to the A4WP charging mode through the A4WP antenna, wherein when the fourth electromagnetic signal is received, the device to be charged feeds back charging information including the A4WP charging mode through the second NFC module.
According to the invention, when the device to be charged is detected, the sending module 10 sends preset voltage information to the device to be charged through the first NFC module, wherein when the preset voltage information is received, the device to be charged selects a charging voltage based on the preset voltage information and the battery voltage of the device to be charged, the charging voltage is fed back through the second NFC module of the device to be charged, when the charging voltage received through the first NFC module is less than or equal to the first preset voltage, the first control module 20 controls the charging circuit to send a first electromagnetic signal through the antenna based on the charging voltage, so that the device to be charged is charged according to the charging voltage, low-voltage direct charging of the device to be charged is realized when the charging voltage is less than or equal to the first preset voltage, and heating of the device to be charged in the charging process can be reduced through the smaller charging voltage, the energy loss in the charging process is reduced, and the charging efficiency of the equipment to be charged is improved.
Drawings
Fig. 1 is a schematic hardware structure diagram of a wireless charging device implementing various embodiments of the present invention;
fig. 2 is a schematic circuit diagram of a wireless charger and a device to be charged according to various embodiments of the present invention;
fig. 3 is a functional block diagram of a wireless charging device based on NFC communication according to a first embodiment of the present invention;
FIG. 4 is a schematic diagram of a circuit structure of a control circuit of the wireless charger according to the present invention;
fig. 5 is a functional block diagram of a wireless charging device based on NFC communication according to a second embodiment of the present invention;
fig. 6 is a functional block diagram of a wireless charging device based on NFC communication according to a third embodiment of the present invention;
fig. 7 is a functional block diagram of a wireless charging device based on NFC communication according to a fourth embodiment of the present invention;
fig. 8 is a functional block diagram of a fifth embodiment of a wireless charging device based on NFC communication according to the present invention;
fig. 9 is a flowchart illustrating a first embodiment of a wireless charging method based on NFC communication according to the present invention;
fig. 10 is a flowchart illustrating a wireless charging method based on NFC communication according to a second embodiment of the present invention;
fig. 11 is a flowchart illustrating a wireless charging method based on NFC communication according to a third embodiment of the present invention;
fig. 12 is a flowchart illustrating a wireless charging method based on NFC communication according to a fourth embodiment of the present invention;
fig. 13 is a flowchart illustrating a fifth embodiment of a wireless charging method based on NFC communication according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A wireless charging apparatus implementing various embodiments of the present invention will now be described with reference to the accompanying drawings. In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
The wireless charging method and the wireless charging device are applied to a wireless charger for charging equipment to be charged, and the equipment to be charged can be implemented in various forms. For example, the device to be charged described in the present invention may include a mobile terminal such as a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a navigation device, and the like, and a stationary terminal such as a digital TV, a desktop computer, and the like.
Fig. 1 is a schematic hardware structure diagram of a wireless charging device implementing various embodiments of the present invention. Fig. 2 is a schematic circuit diagram of a wireless charger and a device to be charged according to various embodiments of the present invention.
The wireless charger includes a processor 110, a power management module 120, a charging circuit (BUCK circuit) 130, and a USB module connected to the charging circuit 130, an antenna 140, and an antenna 140. the processor 110 is used to control the charging circuit to emit electromagnetic waves through the antenna. A conversion circuit is further disposed between the power management module 120 and the charging circuit 130, and is configured to convert the dc signal output by the power management module 120 into ac information and output the ac information to the charging circuit 130, and preferably, the conversion circuit is a MOS transistor. The wireless charger is provided with an NFC (Near Field Communication) module for communicating with the device to be charged through the NFC module. When the antenna includes the WPC antenna and the A4WP antenna, the wireless charger is further provided with a switch for switching the transmitting antenna according to a control command of the processor 110, i.e., switching the antenna between the WPC antenna and the A4WP antenna.
The device to be charged is provided with a power management module and an NFC module, wherein the power management module comprises a PMIC (Power management IC), a Charger IC (charging management IC), a USB module, a Battery, a WPC antenna and/or an A4WP antenna. When charging, the device to be charged can communicate with the wireless charger through the NFC module.
Based on the above hardware structure of the wireless charger, the present invention provides various embodiments of the wireless charging method and apparatus based on NFC communication.
The invention provides a wireless charging device based on NFC communication. Referring to fig. 3, fig. 3 is a functional module diagram of a wireless charging device based on NFC communication according to a first embodiment of the present invention.
In this embodiment, the wireless charging device based on NFC communication is applied to a wireless charger, and the wireless charger is provided with a first NFC module, a charging circuit, and an antenna connected to the charging circuit. The antenna comprises a WPC (Wireless Power Consortium) antenna and/or an A4WP antenna, wherein the WPC antenna is an antenna corresponding to the Qi standard provided by WPC (Wireless Power Consortium) and used for transmitting electromagnetic waves with the frequency of about 100 KHz; the A4WP antenna 160 is an antenna corresponding to the Alliance for wireless Power (A4WP) standard, and is used for transmitting electromagnetic waves with a frequency of about 6.78MHz, and the WPC antenna and the A4WP antenna may be a circular coil, an elliptical coil, or the like. The device to be charged of the wireless charger is provided with the second NFC module, and is used for carrying out data communication with the first NFC module through the second NFC module, so that data communication between the device to be charged and the wireless charger is achieved.
This wireless charging device based on NFC communication includes:
the charging system comprises a sending module 10, a first NFC module and a second NFC module, wherein the sending module is used for sending preset voltage information to the to-be-charged equipment through the first NFC module when the to-be-charged equipment is detected, and when the preset voltage information is received, the to-be-charged equipment selects charging voltage based on the preset voltage information and the battery voltage of the to-be-charged equipment and feeds back the charging voltage through the second NFC module of the to-be-charged equipment;
when the antenna comprises a WPC antenna and an A4WP antenna, when the wireless charging device does not detect that the current equipment to be charged is charged through the wireless charger, the charging circuit is controlled to send a third electromagnetic signal corresponding to the WPC charging mode through the WPC antenna every other first preset time length, and when the duration of sending the third electromagnetic signal each time is longer than the second preset time length, the charging circuit is controlled to send a fourth electromagnetic signal corresponding to the A4WP charging mode through the A4WP antenna, so that the equipment to be charged feeds back corresponding charging information when receiving the third electromagnetic signal or the fourth electromagnetic signal, wherein the first preset time length and the second preset time length can be reasonably set as required, for example, the first preset time length is shorter than or equal to the second preset time length and the like. The wireless charger sends the third electromagnetic signal and the fourth electromagnetic signal at intervals, and can accurately and automatically detect whether the current charging equipment is charged. When the wireless charging device needs to be emphasized, the charging circuit may also be controlled to transmit a fourth electromagnetic signal corresponding to the charging mode A4WP through the antenna A4WP every first preset time period, and when the duration of transmitting the fourth electromagnetic signal each time is longer than the second preset time period, the charging circuit is controlled to transmit a third electromagnetic signal corresponding to the charging mode WPC through the antenna WPC.
When the antenna comprises a WPC antenna or an A4WP antenna, when the wireless charging device does not detect that the equipment to be charged currently exists and is charged through the wireless charger, the charging circuit is controlled to send a third electromagnetic signal corresponding to a WPC charging mode or a fourth electromagnetic signal corresponding to an A4WP charging mode through the WPC antenna every other first preset time length, so that the equipment to be charged feeds back corresponding charging information when receiving the third electromagnetic signal or the fourth electromagnetic signal.
In this embodiment, the wireless charger determines that the device to be charged is detected currently by receiving charging information, and when the device to be charged is detected, that is, when the charging information is received, the sending module 10 sends preset voltage information to the device to be charged through the first NFC module, where the preset voltage information includes a charging voltage range that can be provided by the wireless charger corresponding to a current charging mode of the device to be charged, or a voltage value located within the charging voltage range, for example, the preset voltage information includes 3V, 3.5V, 5V, and the like. When the preset voltage information is received, the device to be charged detects the current battery voltage, then the device to be charged selects the charging voltage based on the preset voltage information and feeds back the charging voltage through a second NFC module of the device to be charged, specifically, the device to be charged determines whether the battery voltage is less than or equal to a first preset voltage, when the battery voltage is less than or equal to the first preset voltage, the device to be charged compares the battery voltage with the voltage in the preset voltage information to select a smaller voltage as the charging voltage, when the battery voltage is greater than the first preset voltage, the device to be charged can select a second preset voltage as the charging voltage, wherein the second preset voltage is the voltage when the device to be charged performs constant voltage charging, and the first preset voltage and the second preset voltage can be reasonably set as required, the first preset voltage is smaller than the second preset voltage, for example, the first preset voltage ranges from 3V to 3.5V, and the second preset voltage is 5V.
The first control module 20 is configured to, when the charging voltage received by the first NFC module is less than or equal to a first preset voltage, control the charging circuit to send a first electromagnetic signal through the antenna based on the charging voltage, so that the device to be charged is charged according to the charging voltage.
In this embodiment, the wireless charger receives, through the first NFC module, a charging voltage fed back by the device to be charged through the second NFC module, and when the charging voltage is less than or equal to a first preset voltage, the voltage of the battery of the device to be charged is lower, so that the first control module 20 controls the charging circuit to send the first electromagnetic signal through the antenna based on the charging voltage, so as to charge the device to be charged according to the charging voltage, that is, the device to be charged is charged at a low voltage, it needs to be emphasized that when the first control module 20 controls the charging circuit to send the first electromagnetic signal through the antenna based on the charging voltage, the power of the charging circuit is kept unchanged, so as to implement low-voltage direct charging of the device to be charged, and thus heat generation of the device to be charged in a large current charging process can be reduced, and energy loss in the charging process is reduced, the charging efficiency is improved.
As shown in fig. 4, the power management module of the wireless charger is provided with a first control unit 210 and a second control unit 220, wherein the first control unit 210 includes two MOS transistors. When the charging voltage is less than or equal to the first preset voltage, the first control module 20 controls the charging circuit to be communicated with the power supply through the first control unit 210, so that the first electromagnetic signal can be sent through the antenna, and the low-voltage large-current direct charging of the device to be charged can be realized.
Further, in an embodiment, the NFC communication based wireless charging device further includes: and the seventh control module is used for controlling the charging circuit to send a third electromagnetic signal through the antenna based on a third preset voltage when the charging voltage received by the first NFC module is greater than the first preset voltage, so that the equipment to be charged is charged at a constant voltage according to the second preset voltage.
In this embodiment, when the charging voltage is greater than the first preset voltage, the voltage of the battery of the device to be charged is higher, that is, the battery power of the device to be charged is sufficient, and the seventh control module controls the charging circuit based on the third preset voltage to transmit the third electromagnetic signal through the antenna, so that the device to be charged performs constant voltage charging according to the second preset voltage, thereby improving the charging efficiency of the device to be charged.
Further, in other embodiments, when detecting a device to be charged, the sending module 10 may send a battery voltage obtaining request of the device to be charged to the device to be charged through the first NFC module, when receiving the battery voltage obtaining request, the device to be charged detects a current battery voltage of the device to be charged, and sends the battery voltage to the wireless charging apparatus based on NFC communication through the second NFC module, and when receiving the battery voltage and determining that the battery voltage is less than or equal to a first preset voltage, based on the first preset voltage, the charging circuit is controlled to send a first electromagnetic signal through the antenna, so that the device to be charged is charged according to the first preset voltage, and low-voltage direct charging of the device to be charged is achieved.
In the wireless charging device based on NFC communication according to this embodiment, when a device to be charged is detected, the sending module 10 sends preset voltage information to the device to be charged through the first NFC module, wherein when the preset voltage information is received, the device to be charged selects a charging voltage based on the preset voltage information and a battery voltage of the device to be charged, and feeds back the charging voltage through the second NFC module of the device to be charged, and when the charging voltage received through the first NFC module is less than or equal to a first preset voltage, the first control module 20 controls the charging circuit to send a first electromagnetic signal through the antenna based on the charging voltage, so that the device to be charged is charged according to the charging voltage, and then low-voltage direct charging of the device to be charged is achieved when the charging voltage is less than or equal to the first preset voltage, and then can reduce the equipment that waits to charge in the charging process through less charging voltage and generate heat, reduce the energy loss in the charging process, improve the charge efficiency who waits to charge the equipment.
A second embodiment of the wireless charging device based on NFC communication according to the present invention is proposed based on the first embodiment, and referring to fig. 5, in this embodiment, the wireless charging device based on NFC communication further includes:
an obtaining module 30, configured to obtain a current battery voltage of the device to be charged through a first NFC module;
in this embodiment, in the process of performing low-voltage direct charging on the device to be charged, the obtaining module 30 obtains the current battery voltage of the device to be charged through the first NFC module, specifically, the obtaining module 30 can obtain the current battery voltage of the device to be charged through the first NFC module in real time or at regular time, or, when the charging duration of the device to be charged reaches the preset duration, the obtaining module 30 obtains the current battery voltage of the device to be charged through the first NFC module in real time or at regular time, wherein, in the process of performing low-voltage direct charging, the device to be charged detects the current battery voltage in real time or at regular time, and sends the detected current battery voltage to the wireless charging device based on NFC communication through the second NFC module.
And the second control module 40 is used for controlling the charging circuit to send a second electromagnetic signal through the antenna based on a third preset voltage when the current battery voltage of the device to be charged is greater than the second preset voltage, so that the device to be charged is charged at a constant voltage according to the third preset voltage.
In this embodiment, when the current battery voltage of the device to be charged is greater than the second preset voltage, the second control module 40 controls the charging circuit to send the second electromagnetic signal through the antenna based on the third preset voltage, wherein the second preset voltage may be reasonably set as required, for example, when the device to be charged is a mobile terminal such as a mobile phone, the second preset voltage may be set to 5V, that is, the device to be charged performs constant voltage charging according to the voltage of 5V, so as to improve the charging efficiency of the device to be charged.
As shown in fig. 4, when the charging voltage is less than or equal to the first preset voltage, the first control module 20 controls the charging circuit to be connected to the power supply through the second control unit 220, even if the second control unit 200 is connected to the power supply and the connection between the second control unit 210 and the power supply is disconnected, so that the second electromagnetic signal can be transmitted through the antenna to charge the device to be charged with high voltage and high current.
According to the wireless charging device based on NFC communication, the current battery voltage of the equipment to be charged is acquired through the first NFC module through the acquisition module 30, and then when the current battery voltage of the equipment to be charged is larger than the second preset voltage, the second control module 40 controls the charging circuit to send the second electromagnetic signal through the antenna based on the third preset voltage, so that the equipment to be charged is charged at constant voltage according to the third preset voltage, and the charging efficiency of the equipment to be charged is improved.
A third embodiment of the NFC-communication-based wireless charging device according to the present invention is proposed based on the second embodiment, and referring to fig. 6, in this embodiment, the NFC-communication-based wireless charging device further includes:
the second obtaining module 50 is configured to obtain a current charging current of the device to be charged through the first NFC module;
in this embodiment, the second obtaining module 50 may obtain the current charging current of the device to be charged through the first NFC module in real time or at regular time, so as to adjust the current of the charging current according to the current charging current of the device to be charged.
And a third control module 60, configured to control the charging circuit to transmit a second electromagnetic signal through the antenna based on a third preset voltage and a second preset current when the current charging current of the device to be charged is greater than the first preset current, so that the device to be charged is charged according to the third preset voltage and the second preset current, where the second preset current is smaller than the first preset current.
The first preset current and the second preset current can be reasonably set according to requirements.
In this embodiment, when the current charging current of the device to be charged is greater than the first preset current, the charging current of the device to be charged is too large, and the device to be charged is charged according to the current charging current and the charging voltage for a long time, which may result in a temperature rise of the device to be charged, and there is a potential safety hazard, therefore, the third control module 60 controls the charging circuit to transmit the second electromagnetic signal through the antenna based on the third preset voltage and the second preset current, so that the device to be charged is charged according to the third preset voltage and the second preset current, that is, the charging current of the device to be charged is reduced, and the device to be charged can be charged under the condition of ensuring safety.
The wireless charging device based on the NFC communication provided by this embodiment acquires the current charging current of the device to be charged through the first NFC module by the second acquisition module 50, and then when the current charging current of the device to be charged is greater than the first preset current, the third control module 60 controls the charging circuit based on the third preset voltage and the second preset current, so that the antenna transmits the second electromagnetic signal to the device to be charged, and the device to be charged is charged according to the third preset voltage and the second preset current, thereby reducing the charging current of the device to be charged, enabling the device to be charged under the condition of ensuring safety, and further improving the charging efficiency of the device to be charged.
A third embodiment of the NFC-communication-based wireless charging device according to the present invention is proposed based on the second embodiment, and referring to fig. 7, in this embodiment, the NFC-communication-based wireless charging device further includes:
a third obtaining module 70, configured to obtain, through the first NFC module, a current temperature of the device to be charged;
in this embodiment, the third obtaining module 70 can obtain the current temperature of the device to be charged in real time or at regular time through the first NFC module, so as to adjust the current and voltage of the charging circuit according to the current temperature of the device to be charged, and avoid the temperature of the device to be charged being too high.
And the fourth control module 80 is configured to control the charging circuit to reduce the current when the current temperature of the device to be charged is greater than the preset temperature value, so as to reduce the charging current of the device to be charged.
In this embodiment, when the current temperature of the device to be charged is greater than the preset temperature value, the temperature of the device to be charged is too high, so that the fourth control module 80 is improved to control the charging circuit to reduce the current to reduce the charging current of the device to be charged, and further reduce the heat generated by the device to be charged in the charging process, reduce the temperature of the device to be charged, enable the device to be charged under the condition of ensuring safety, and further improve the charging efficiency of the device to be charged.
According to the wireless charging device based on NFC communication provided by the embodiment, the third acquisition module 70 acquires the current temperature of the equipment to be charged through the first NFC module, and then when the current temperature of the equipment to be charged is greater than a preset temperature value, the fourth control module 80 controls the charging circuit to reduce the current so as to reduce the charging current of the equipment to be charged, thereby reducing the heat generated by the equipment to be charged in the charging process, reducing the temperature of the equipment to be charged, enabling the equipment to be charged under the condition of ensuring safety, and further improving the charging efficiency of the equipment to be charged.
A fifth embodiment of the NFC communication wireless charging apparatus according to the present invention is proposed based on the first embodiment, and referring to fig. 8, in this embodiment, the antenna includes a WPC antenna and an A4WP antenna, and the NFC communication wireless charging apparatus further includes:
the fifth control module 90 is configured to control the charging circuit to send a third electromagnetic signal corresponding to the WPC charging mode through the WPC antenna every other first preset time, where when the third electromagnetic signal is received, the device to be charged feeds back charging information including the WPC charging mode through the second NFC module;
in this embodiment, when it is not detected that the mobile terminal currently exists and is charged through the wireless charger, the fifth control module 90 controls the charging circuit to send the third electromagnetic signal corresponding to the WPC charging mode through the WPC antenna every other first preset time period, specifically, the fifth control module 90 enables the charging circuit to send the third electromagnetic signal through the WPC antenna by adjusting a capacitance and/or an inductance of the charging circuit, where the first preset time period may be reasonably set as required, for example, the first preset time period is set to 5 seconds, and when the third electromagnetic signal is received, the device to be charged feeds back charging information including the WPC charging mode through the second NFC module.
A sixth control module 100, configured to control the charging circuit to send a fourth electromagnetic signal corresponding to the A4WP charging mode through the A4WP antenna when the duration of sending the third electromagnetic signal is longer than a second preset duration each time, where when receiving the fourth electromagnetic signal, the device to be charged feeds back charging information including the A4WP charging mode through the second NFC module.
When the duration of sending the third electromagnetic signal is longer than the preset duration each time, the sixth control module 100 enables the charging circuit to send a fourth electromagnetic signal corresponding to the A4WP charging mode through the A4WP antenna by adjusting the capacitance and/or the inductance of the charging circuit, where the second preset duration may be reasonably set as needed, for example, the first preset duration is shorter than or equal to the second preset duration, and the like, where when the fourth electromagnetic signal is received, the device to be charged feeds back the charging information including the A4WP charging mode through the second NFC module.
When the wireless charging device needs to be emphasized, the charging circuit may also be controlled to transmit a fourth electromagnetic signal corresponding to the charging mode A4WP through the antenna A4WP every first preset time period, and when the duration of transmitting the fourth electromagnetic signal each time is longer than the second preset time period, the charging circuit is controlled to transmit a third electromagnetic signal corresponding to the charging mode WPC through the antenna WPC.
According to the wireless charging device based on the NFC communication, the fifth control module 90 controls the charging circuit to send the third electromagnetic signal corresponding to the WPC charging mode through the WPC antenna every first preset time, and then the sixth control module 100 controls the charging circuit to send the fourth electromagnetic signal corresponding to the A4WP charging mode through the A4WP antenna every time the duration of sending the third electromagnetic signal is longer than the second preset time, so that the wireless charging device can send the third electromagnetic signal and the fourth electromagnetic signal at intervals, and when the mobile terminal receives the third electromagnetic signal or the fourth electromagnetic signal, the corresponding charging information is fed back, and whether the mobile terminal is currently charged can be accurately and automatically detected.
A sixth embodiment of the NFC communication-based wireless charging apparatus of the present invention is proposed based on the fifth embodiment, and in this embodiment, the transmitting module 10 includes:
the charging device comprises an analyzing unit and a charging unit, wherein the analyzing unit is used for analyzing charging information sent by a device to be charged so as to obtain a charging mode corresponding to the device to be charged;
when receiving charging information sent by a device to be charged, an analyzing unit analyzes the charging information to obtain a charging mode corresponding to the device to be charged, specifically, when a user places the device to be charged on the wireless charger for charging, the wireless charger sends the third electromagnetic signal and the fourth electromagnetic signal at intervals, the device to be charged can receive the third electromagnetic signal and/or the fourth electromagnetic signal through the corresponding receiving antenna, when receiving the third electromagnetic signal and/or the fourth electromagnetic signal, the mobile terminal sends charging information to the wireless charging device of this embodiment, wherein the charging information comprises charging modes which can be adopted by the equipment to be charged, the charging modes comprise a WPC charging mode and/or an A4WP charging mode, that is, the device to be charged may be charged in one or both of the WPC charging mode and the A4WP charging mode.
The charging device comprises a transmitting unit and a charging unit, wherein the transmitting unit is used for transmitting preset voltage information to the device to be charged through a first NFC module, when the charging mode is a WPC charging mode, the preset voltage information comprises a charging voltage range corresponding to the WPC charging mode, and when the charging mode is an A4WP charging mode, the preset voltage information comprises a charging voltage range corresponding to the A4WP charging mode.
In this embodiment, when the charging mode is the WPC charging mode, the sending unit sends the preset voltage information including the charging voltage range corresponding to the WPC charging mode to the device to be charged through the first NFC module, and when the charging mode is the A4WP charging mode, the sending unit sends the preset voltage information including the charging voltage range corresponding to the A4WP charging mode to the device to be charged through the first NFC module, so that the device to be charged can receive the preset voltage information corresponding to the current charging mode.
According to the wireless charging device based on NFC communication, when charging information sent by equipment to be charged is received, the charging information is analyzed by the analyzing unit to obtain the charging mode corresponding to the equipment to be charged, and then the sending unit sends preset voltage information to the equipment to be charged through the first NFC module, so that the equipment to be charged can receive the preset voltage information corresponding to the current charging mode, and then the corresponding charging voltage is selected, and the charging efficiency of the equipment to be charged is further improved.
The invention further provides a wireless charging method based on NFC communication. Referring to fig. 9, fig. 9 is a flowchart illustrating a first embodiment of a wireless charging method based on NFC communication according to the present invention.
In this embodiment, the Wireless charging method based on NFC communication is applied to a Wireless charger, where the Wireless charger is provided with a first NFC module, a charging circuit, and an antenna connected to the charging circuit, where the antenna includes a WPC antenna and/or an A4WP antenna, and the WPC antenna is an antenna corresponding to the Qi standard proposed by the WPC (Wireless Power Consortium) and is used to emit electromagnetic waves with a frequency of about 100 KHz; the A4WP antenna 160 is an antenna corresponding to the Alliance for wireless Power (A4WP) standard, and is used for transmitting electromagnetic waves with a frequency of about 6.78MHz, and the WPC antenna and the A4WP antenna may be a circular coil, an elliptical coil, or the like. The device to be charged of the wireless charger is provided with the second NFC module, and is used for carrying out data communication with the first NFC module through the second NFC module, so that data communication between the device to be charged and the wireless charger is achieved.
The wireless charging method based on NFC communication comprises the following steps:
step S10, when a device to be charged is detected, sending preset voltage information to the device to be charged through a first NFC module, wherein when the preset voltage information is received, the device to be charged selects a charging voltage based on the preset voltage information and the battery voltage of the device to be charged, and feeds back the charging voltage through a second NFC module of the device to be charged;
when the antenna comprises a WPC antenna and an A4WP antenna, when the wireless charging device does not detect that the current equipment to be charged is charged through the wireless charger, the charging circuit is controlled to send a third electromagnetic signal corresponding to the WPC charging mode through the WPC antenna every other first preset time length, and when the duration of sending the third electromagnetic signal each time is longer than the second preset time length, the charging circuit is controlled to send a fourth electromagnetic signal corresponding to the A4WP charging mode through the A4WP antenna, so that the equipment to be charged feeds back corresponding charging information when receiving the third electromagnetic signal or the fourth electromagnetic signal, wherein the first preset time length and the second preset time length can be reasonably set as required, for example, the first preset time length is shorter than or equal to the second preset time length and the like. The wireless charger sends the third electromagnetic signal and the fourth electromagnetic signal at intervals, and can accurately and automatically detect whether the current charging equipment is charged. When the wireless charging device needs to be emphasized, the charging circuit may also be controlled to transmit a fourth electromagnetic signal corresponding to the charging mode A4WP through the antenna A4WP every first preset time period, and when the duration of transmitting the fourth electromagnetic signal each time is longer than the second preset time period, the charging circuit is controlled to transmit a third electromagnetic signal corresponding to the charging mode WPC through the antenna WPC.
When the antenna comprises a WPC antenna or an A4WP antenna, when the wireless charging device does not detect that the equipment to be charged currently exists and is charged through the wireless charger, the charging circuit is controlled to send a third electromagnetic signal corresponding to a WPC charging mode or a fourth electromagnetic signal corresponding to an A4WP charging mode through the WPC antenna every other first preset time length, so that the equipment to be charged feeds back corresponding charging information when receiving the third electromagnetic signal or the fourth electromagnetic signal.
In this embodiment, the wireless charger determines that the device to be charged is detected currently by receiving charging information, and when the device to be charged is detected, that is, when the charging information is received, the sending module 10 sends preset voltage information to the device to be charged through the first NFC module, where the preset voltage information includes a charging voltage range that can be provided by the wireless charger corresponding to a current charging mode of the device to be charged, or a voltage value located within the charging voltage range, for example, the preset voltage information includes 3V, 3.5V, 5V, and the like. When the preset voltage information is received, the device to be charged detects the current battery voltage, then the device to be charged selects the charging voltage based on the preset voltage information and feeds back the charging voltage through a second NFC module of the device to be charged, specifically, the device to be charged determines whether the battery voltage is less than or equal to a first preset voltage, when the battery voltage is less than or equal to the first preset voltage, the device to be charged compares the battery voltage with the voltage in the preset voltage information to select a smaller voltage as the charging voltage, when the battery voltage is greater than the first preset voltage, the device to be charged can select a second preset voltage as the charging voltage, wherein the second preset voltage is the voltage when the device to be charged performs constant voltage charging, and the first preset voltage and the second preset voltage can be reasonably set as required, the first preset voltage is smaller than the second preset voltage, for example, the first preset voltage ranges from 3V to 3.5V, and the second preset voltage is 5V.
Step S20, when the charging voltage received by the first NFC module is less than or equal to a first preset voltage, controlling the charging circuit to send a first electromagnetic signal through the antenna based on the charging voltage, so that the device to be charged is charged according to the charging voltage
In this embodiment, the wireless charger receives, through the first NFC module, a charging voltage fed back by the device to be charged through the second NFC module, and when the charging voltage is less than or equal to a first preset voltage, the voltage of the battery of the device to be charged is lower, so that the first control module 20 controls the charging circuit to send the first electromagnetic signal through the antenna based on the charging voltage, so as to charge the device to be charged according to the charging voltage, that is, the device to be charged is charged at a low voltage, it needs to be emphasized that when the first control module 20 controls the charging circuit to send the first electromagnetic signal through the antenna based on the charging voltage, the power of the charging circuit is kept unchanged, so as to implement low-voltage direct charging of the device to be charged, and thus heat generation of the device to be charged in a large current charging process can be reduced, and energy loss in the charging process is reduced, the charging efficiency is improved.
As shown in fig. 4, the power management module of the wireless charger is provided with a first control unit 210 and a second control unit 220, wherein the first control unit 210 includes two MOS transistors. When the charging voltage is less than or equal to the first preset voltage, the first control module 20 controls the charging circuit to be communicated with the power supply through the first control unit 210, so that the first electromagnetic signal can be sent through the antenna, and the low-voltage large-current direct charging of the device to be charged can be realized.
Further, in an embodiment, the NFC communication-based wireless charging method further includes:
when the charging voltage received by the first NFC module is larger than the first preset voltage, the charging circuit is controlled to send a third electromagnetic signal through the antenna based on a third preset voltage, so that the equipment to be charged is charged at a constant voltage according to the second preset voltage.
In this embodiment, when the charging voltage is greater than the first preset voltage, the voltage of the battery of the device to be charged is higher, that is, the battery power of the device to be charged is sufficient, and the seventh control module controls the charging circuit based on the third preset voltage to transmit the third electromagnetic signal through the antenna, so that the device to be charged performs constant voltage charging according to the second preset voltage, thereby improving the charging efficiency of the device to be charged.
Further, in other embodiments, when detecting a device to be charged, the sending module 10 may send a battery voltage obtaining request of the device to be charged to the device to be charged through the first NFC module, when receiving the battery voltage obtaining request, the device to be charged detects a current battery voltage of the device to be charged, and sends the battery voltage to the wireless charging apparatus based on NFC communication through the second NFC module, and when receiving the battery voltage and determining that the battery voltage is less than or equal to a first preset voltage, based on the first preset voltage, the charging circuit is controlled to send a first electromagnetic signal through the antenna, so that the device to be charged is charged according to the first preset voltage, and low-voltage direct charging of the device to be charged is achieved.
In the wireless charging method based on NFC communication according to this embodiment, when a device to be charged is detected, the sending module 10 sends preset voltage information to the device to be charged through the first NFC module, wherein when the preset voltage information is received, the device to be charged selects a charging voltage based on the preset voltage information and a battery voltage of the device to be charged, and feeds back the charging voltage through the second NFC module of the device to be charged, when the charging voltage received by the first NFC module is less than or equal to a first preset voltage, the first control module 20 controls the charging circuit to send a first electromagnetic signal through the antenna based on the charging voltage, so that the device to be charged is charged according to the charging voltage, and then low-voltage direct charging of the device to be charged is achieved when the charging voltage is less than or equal to the first preset voltage, and then can reduce the equipment that waits to charge in the charging process through less charging voltage and generate heat, reduce the energy loss in the charging process, improve the charge efficiency who waits to charge the equipment.
A second embodiment of the NFC communication-based wireless charging method according to the present invention is proposed based on the first embodiment, and referring to fig. 10, in this embodiment, the NFC communication-based wireless charging method further includes:
step S30, acquiring the current battery voltage of the equipment to be charged through a first NFC module;
in this embodiment, in the process of performing low-voltage direct charging on the device to be charged, the obtaining module 30 obtains the current battery voltage of the device to be charged through the first NFC module, specifically, the obtaining module 30 can obtain the current battery voltage of the device to be charged through the first NFC module in real time or at regular time, or, when the charging duration of the device to be charged reaches the preset duration, the obtaining module 30 obtains the current battery voltage of the device to be charged through the first NFC module in real time or at regular time, wherein, in the process of performing low-voltage direct charging, the device to be charged detects the current battery voltage in real time or at regular time, and sends the detected current battery voltage to the wireless charging device based on NFC communication through the second NFC module.
And step S40, when the current battery voltage of the equipment to be charged is greater than the second preset voltage, controlling the charging circuit to send a second electromagnetic signal through the antenna based on a third preset voltage, so that the equipment to be charged performs constant voltage charging according to the third preset voltage.
In this embodiment, when the current battery voltage of the device to be charged is greater than the second preset voltage, the second control module 40 controls the charging circuit to send the second electromagnetic signal through the antenna based on the third preset voltage, wherein the second preset voltage may be reasonably set as required, for example, when the device to be charged is a mobile terminal such as a mobile phone, the second preset voltage may be set to 5V, that is, the device to be charged performs constant voltage charging according to the voltage of 5V, so as to improve the charging efficiency of the device to be charged.
As shown in fig. 4, when the charging voltage is less than or equal to the first preset voltage, the first control module 20 controls the charging circuit to be connected to the power supply through the second control unit 220, even if the second control unit 200 is connected to the power supply and the connection between the second control unit 210 and the power supply is disconnected, so that the second electromagnetic signal can be transmitted through the antenna to charge the device to be charged with high voltage and high current.
According to the wireless charging method based on NFC communication provided by the embodiment, the current battery voltage of the device to be charged is acquired through the first NFC module by the acquisition module 30, and then when the current battery voltage of the device to be charged is greater than the second preset voltage, the second control module 40 controls the charging circuit to send the second electromagnetic signal through the antenna based on the third preset voltage, so that the device to be charged is charged at a constant voltage according to the third preset voltage, and the charging efficiency of the device to be charged is improved.
A third embodiment of the NFC-communication-based wireless charging method according to the present invention is proposed based on the second embodiment, and referring to fig. 11, in this embodiment, after step S40, the NFC-communication-based wireless charging method further includes:
step S50, acquiring the current charging current of the device to be charged through a first NFC module;
in this embodiment, the second obtaining module 50 may obtain the current charging current of the device to be charged through the first NFC module in real time or at regular time, so as to adjust the current of the charging current according to the current charging current of the device to be charged.
Step S60, when the current charging current of the device to be charged is greater than the first preset current, controlling the charging circuit to send an electromagnetic signal through the antenna based on a third preset voltage and a second preset current, so that the device to be charged is charged according to the third preset voltage and the second preset current, where the second preset current is less than the first preset current.
The first preset current and the second preset current can be reasonably set according to requirements.
In this embodiment, when the current charging current of the device to be charged is greater than the first preset current, the charging current of the device to be charged is too large, and the device to be charged is charged according to the current charging current and the charging voltage for a long time, which may result in a temperature rise of the device to be charged, and there is a potential safety hazard, therefore, the third control module 60 controls the charging circuit to transmit the second electromagnetic signal through the antenna based on the third preset voltage and the second preset current, so that the device to be charged is charged according to the third preset voltage and the second preset current, that is, the charging current of the device to be charged is reduced, and the device to be charged can be charged under the condition of ensuring safety.
According to the wireless charging method based on NFC communication provided by the embodiment, the second obtaining module 50 obtains the current charging current of the device to be charged through the first NFC module, and then when the current charging current of the device to be charged is larger than the first preset current, the third control module 60 controls the charging circuit to send the second electromagnetic signal through the antenna based on the third preset voltage and the second preset current, so that the device to be charged is charged according to the third preset voltage and the second preset current, the charging current of the device to be charged can be reduced, the device to be charged can be charged under the condition of ensuring safety, and the charging efficiency of the device to be charged is further improved.
A fourth embodiment of the NFC communication-based wireless charging method according to the present invention is proposed based on the second embodiment, and referring to fig. 12, in this embodiment, after step S40, the NFC communication-based wireless charging method further includes:
step S70, acquiring the current temperature of the equipment to be charged through a first NFC module;
in this embodiment, the third obtaining module 70 can obtain the current temperature of the device to be charged in real time or at regular time through the first NFC module, so as to adjust the current and voltage of the charging circuit according to the current temperature of the device to be charged, and avoid the temperature of the device to be charged being too high.
And step S80, when the current temperature of the equipment to be charged is higher than a preset temperature value, controlling the charging circuit to reduce the current so as to reduce the charging current of the equipment to be charged.
In this embodiment, when the current temperature of the device to be charged is greater than the preset temperature value, the temperature of the device to be charged is too high, so that the fourth control module 80 is improved to control the charging circuit to reduce the current to reduce the charging current of the device to be charged, and further reduce the heat generated by the device to be charged in the charging process, reduce the temperature of the device to be charged, enable the device to be charged under the condition of ensuring safety, and further improve the charging efficiency of the device to be charged.
In the wireless charging method based on NFC communication provided in this embodiment, the third obtaining module 70 obtains the current temperature of the device to be charged through the first NFC module, and then when the current temperature of the device to be charged is greater than the preset temperature value, the fourth control module 80 controls the charging circuit to reduce the current so as to reduce the charging current of the device to be charged, thereby reducing the heat generated by the device to be charged in the charging process, reducing the temperature of the device to be charged, enabling the device to be charged under the condition of ensuring safety, and further improving the charging efficiency of the device to be charged.
A fifth embodiment of the NFC communication-based wireless charging method according to the present invention is proposed based on the first embodiment, and referring to fig. 13, in this embodiment, the antenna includes a WPC antenna and an A4WP antenna, and the NFC communication-based wireless charging method further includes:
step S90, controlling the charging circuit to send a third electromagnetic signal corresponding to the WPC charging mode through the WPC antenna every other first preset time, wherein when the third electromagnetic signal is received, the device to be charged feeds back charging information including the WPC charging mode through the second NFC module;
in this embodiment, when it is not detected that the mobile terminal currently exists and is charged through the wireless charger, the fifth control module 90 controls the charging circuit to send the third electromagnetic signal corresponding to the WPC charging mode through the WPC antenna every other first preset time period, specifically, the fifth control module 90 enables the charging circuit to send the third electromagnetic signal through the WPC antenna by adjusting a capacitance and/or an inductance of the charging circuit, where the first preset time period may be reasonably set as required, for example, the first preset time period is set to 5 seconds, and when the third electromagnetic signal is received, the device to be charged feeds back charging information including the WPC charging mode through the second NFC module.
Step S100, when the duration of sending the third electromagnetic signal is longer than a second preset duration, controlling the charging circuit to send a fourth electromagnetic signal corresponding to the A4WP charging mode through the A4WP antenna, where when receiving the fourth electromagnetic signal, the device to be charged feeds back the charging information including the A4WP charging mode through the second NFC module.
When the duration of sending the third electromagnetic signal is longer than the preset duration each time, the sixth control module 100 enables the charging circuit to send a fourth electromagnetic signal corresponding to the A4WP charging mode through the A4WP antenna by adjusting the capacitance and/or the inductance of the charging circuit, where the second preset duration may be reasonably set as needed, for example, the first preset duration is shorter than or equal to the second preset duration, and the like, where when the fourth electromagnetic signal is received, the device to be charged feeds back the charging information including the A4WP charging mode through the second NFC module.
When the wireless charging device needs to be emphasized, the charging circuit may also be controlled to transmit a fourth electromagnetic signal corresponding to the charging mode A4WP through the antenna A4WP every first preset time period, and when the duration of transmitting the fourth electromagnetic signal each time is longer than the second preset time period, the charging circuit is controlled to transmit a third electromagnetic signal corresponding to the charging mode WPC through the antenna WPC.
According to the wireless charging method based on NFC communication provided by this embodiment, the fifth control module 90 controls the charging circuit to send the third electromagnetic signal corresponding to the WPC charging mode through the WPC antenna every other first preset time period, and then the sixth control module 100 controls the charging circuit to send the fourth electromagnetic signal corresponding to the A4WP charging mode through the A4WP antenna every time the duration of sending the third electromagnetic signal is longer than the second preset time period, so that the wireless charging device can send the third electromagnetic signal and the fourth electromagnetic signal at intervals, and when the mobile terminal receives the third electromagnetic signal or the fourth electromagnetic signal, the corresponding charging information is fed back, and thus whether the mobile terminal is currently charged can be accurately and automatically detected.
A sixth embodiment of the NFC communication-based wireless charging method according to the present invention is proposed based on the fifth embodiment, and in this embodiment, step S10 includes:
step S11, when receiving the charging information sent by the device to be charged, analyzing the charging information to obtain the charging mode corresponding to the device to be charged;
when receiving charging information sent by a device to be charged, an analyzing unit analyzes the charging information to obtain a charging mode corresponding to the device to be charged, specifically, when a user places the device to be charged on the wireless charger for charging, the wireless charger sends the third electromagnetic signal and the fourth electromagnetic signal at intervals, the device to be charged can receive the third electromagnetic signal and/or the fourth electromagnetic signal through the corresponding receiving antenna, when receiving the third electromagnetic signal and/or the fourth electromagnetic signal, the mobile terminal sends charging information to the wireless charging device of this embodiment, wherein the charging information comprises charging modes which can be adopted by the equipment to be charged, the charging modes comprise a WPC charging mode and/or an A4WP charging mode, that is, the device to be charged may be charged in one or both of the WPC charging mode and the A4WP charging mode.
Step S12, sending preset voltage information to the device to be charged through a first NFC module, wherein the preset voltage information includes a charging voltage range corresponding to a WPC charging mode when the charging mode is the WPC charging mode, and the preset voltage information includes a charging voltage range corresponding to a A4WP charging mode when the charging mode is the A4WP charging mode.
In this embodiment, when the charging mode is the WPC charging mode, the sending unit sends the preset voltage information including the charging voltage range corresponding to the WPC charging mode to the device to be charged through the first NFC module, and when the charging mode is the A4WP charging mode, the sending unit sends the preset voltage information including the charging voltage range corresponding to the A4WP charging mode to the device to be charged through the first NFC module, so that the device to be charged can receive the preset voltage information corresponding to the current charging mode.
According to the wireless charging method based on NFC communication, when charging information sent by equipment to be charged is received, the charging information is analyzed by the analyzing unit to obtain the charging mode corresponding to the equipment to be charged, and then the sending unit sends preset voltage information to the equipment to be charged through the first NFC module, so that the equipment to be charged can receive the preset voltage information corresponding to the current charging mode, and then the corresponding charging voltage is selected, and the charging efficiency of the equipment to be charged is further improved.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (6)

1. The utility model provides a wireless charging device based on NFC communication which characterized in that is applied to wireless charger, wireless charger be equipped with first NFC module, charging circuit and with the antenna that charging circuit connects, wireless charging device based on NFC communication includes:
the device to be charged comprises a sending module, a first NFC module and a second NFC module, wherein the sending module is used for sending preset voltage information to the device to be charged through the first NFC module when the device to be charged is detected, and when the preset voltage information is received, the device to be charged selects charging voltage based on the preset voltage information and the battery voltage of the device to be charged and feeds back the charging voltage through the second NFC module of the device to be charged;
the first control module is used for controlling the charging circuit to send a first electromagnetic signal through the antenna based on the charging voltage when the charging voltage received by the first NFC module is smaller than or equal to a first preset voltage, so that the device to be charged is charged according to the charging voltage;
the acquisition module is used for acquiring the current battery voltage of the equipment to be charged through the first NFC module;
the second control module is used for controlling the charging circuit to send a second electromagnetic signal through the antenna based on a third preset voltage when the current battery voltage of the equipment to be charged is greater than the second preset voltage, so that the equipment to be charged is charged at a constant voltage according to the third preset voltage;
the second acquisition module is used for acquiring the current charging current of the equipment to be charged through the first NFC module;
and the third control module is used for controlling the charging circuit to transmit the electromagnetic signal through the antenna based on a third preset voltage and a second preset current when the current charging current of the equipment to be charged is greater than the first preset current, wherein the second preset current is less than the first preset current.
2. The NFC-communication based wireless charging apparatus of claim 1, wherein the NFC-communication based wireless charging apparatus further comprises:
the third acquiring module is used for acquiring the current temperature of the equipment to be charged through the first NFC module;
and the fourth control module is used for controlling the charging circuit to reduce the current so as to reduce the charging current of the equipment to be charged when the current temperature of the equipment to be charged is greater than a preset temperature value.
3. An NFC-communication-based wireless charging apparatus according to any one of claims 1 and 2, wherein the antenna includes a WPC antenna and an A4WP antenna, the NFC-communication-based wireless charging apparatus further including:
the charging circuit is used for sending a third electromagnetic signal corresponding to the WPC charging mode through the WPC antenna every other first preset time, and when the third electromagnetic signal is received, the equipment to be charged feeds back charging information comprising the WPC charging mode through the second NFC module;
the sixth control module is configured to control the charging circuit to send a fourth electromagnetic signal corresponding to the A4WP charging mode through the A4WP antenna when the duration of sending the third electromagnetic signal is longer than a second preset duration each time, where when receiving the fourth electromagnetic signal, the device to be charged feeds back charging information including the A4WP charging mode through the second NFC module.
4. A wireless charging method based on NFC communication is applied to a wireless charger, the wireless charger is provided with a first NFC module, a charging circuit and an antenna connected with the charging circuit, and the wireless charging method based on NFC communication comprises the following steps:
when the device to be charged is detected, sending preset voltage information to the device to be charged through a first NFC module, wherein when the preset voltage information is received, the device to be charged selects charging voltage based on the preset voltage information and the battery voltage of the device to be charged, and feeding back the charging voltage through a second NFC module of the device to be charged;
when the charging voltage received by the first NFC module is smaller than or equal to a first preset voltage, controlling the charging circuit to send a first electromagnetic signal through the antenna based on the charging voltage so that the device to be charged is charged according to the charging voltage;
acquiring the current battery voltage of the equipment to be charged through a first NFC module;
when the current battery voltage of the equipment to be charged is greater than a second preset voltage, controlling the charging circuit to send a second electromagnetic signal through the antenna based on a third preset voltage so that the equipment to be charged is charged at a constant voltage according to the third preset voltage;
acquiring the current charging current of the equipment to be charged through a first NFC module;
when the current charging current of the device to be charged is larger than the first preset current, the charging circuit is controlled to send an electromagnetic signal through the antenna based on a third preset voltage and a second preset current, so that the device to be charged is charged according to the third preset voltage and the second preset current, wherein the second preset current is smaller than the first preset current.
5. The NFC-communication-based wireless charging method of claim 4, wherein after the step of controlling the charging circuit to transmit a second electromagnetic signal through the antenna based on a third preset voltage, the NFC-communication-based wireless charging method further comprises:
acquiring the current temperature of the equipment to be charged through a first NFC module;
and when the current temperature of the equipment to be charged is higher than a preset temperature value, controlling the charging circuit to reduce the current so as to reduce the charging current of the equipment to be charged.
6. An NFC-communication-based wireless charging method according to any one of claims 4 and 5, wherein the antenna comprises a WPC antenna and an A4WP antenna, and before the step of sending the preset voltage information to the device to be charged through the first NFC module, the NFC-communication-based wireless charging method further comprises:
controlling the charging circuit to send a third electromagnetic signal corresponding to the WPC charging mode through a WPC antenna every other first preset time, wherein when the third electromagnetic signal is received, the equipment to be charged feeds back charging information comprising the WPC charging mode through the second NFC module;
and when the duration of sending the third electromagnetic signal is longer than a second preset duration, controlling the charging circuit to send a fourth electromagnetic signal corresponding to the A4WP charging mode through the A4WP antenna, wherein when the fourth electromagnetic signal is received, the device to be charged feeds back charging information including the A4WP charging mode through the second NFC module.
CN201611076292.2A 2016-11-29 2016-11-29 Wireless charging method and device based on NFC communication Active CN106655359B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611076292.2A CN106655359B (en) 2016-11-29 2016-11-29 Wireless charging method and device based on NFC communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611076292.2A CN106655359B (en) 2016-11-29 2016-11-29 Wireless charging method and device based on NFC communication

Publications (2)

Publication Number Publication Date
CN106655359A CN106655359A (en) 2017-05-10
CN106655359B true CN106655359B (en) 2020-03-27

Family

ID=58814878

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611076292.2A Active CN106655359B (en) 2016-11-29 2016-11-29 Wireless charging method and device based on NFC communication

Country Status (1)

Country Link
CN (1) CN106655359B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109698562A (en) * 2019-03-05 2019-04-30 捷德（中国）信息科技有限公司 Wireless charging method, power supply unit and power receiving equipment
CN112949805A (en) * 2019-12-11 2021-06-11 深圳市文鼎创数据科技有限公司 NFC card equipment power supply method and device, computer equipment and storage medium

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103094965A (en) * 2013-01-31 2013-05-08 深圳市中兴移动通信有限公司 Connection method to achieve wireless charging and wireless device
CN103683400A (en) * 2013-11-30 2014-03-26 深圳小木科技有限公司 NFC (near field communication) based wireless charging control method and system
CN104167829A (en) * 2014-08-22 2014-11-26 天津三星电子有限公司 Wireless charging method, device and system
CN104485724A (en) * 2014-12-31 2015-04-01 展讯通信（上海）有限公司 Method and device for charging to-be-charged equipment, to-be-charged equipment and charging system
CN104578209A (en) * 2013-10-22 2015-04-29 中兴通讯股份有限公司 Wireless charge terminal as well as user terminal and wireless charge method
CN105591431A (en) * 2015-12-31 2016-05-18 宇龙计算机通信科技(深圳)有限公司 Charging method and equipment of mobile terminal, and mobile terminal
CN105790338A (en) * 2014-08-27 2016-07-20 现代自动车株式会社 Wireless charging system for variable charging mode
CN105846498A (en) * 2016-04-29 2016-08-10 上海与德通讯技术有限公司 Wireless charge module, electronic device and wireless charge method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9570931B2 (en) * 2011-12-22 2017-02-14 Panasonic Intellectual Property Corporation Of America Electronic device and electronic device charging system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103094965A (en) * 2013-01-31 2013-05-08 深圳市中兴移动通信有限公司 Connection method to achieve wireless charging and wireless device
CN104578209A (en) * 2013-10-22 2015-04-29 中兴通讯股份有限公司 Wireless charge terminal as well as user terminal and wireless charge method
CN103683400A (en) * 2013-11-30 2014-03-26 深圳小木科技有限公司 NFC (near field communication) based wireless charging control method and system
CN104167829A (en) * 2014-08-22 2014-11-26 天津三星电子有限公司 Wireless charging method, device and system
CN105790338A (en) * 2014-08-27 2016-07-20 现代自动车株式会社 Wireless charging system for variable charging mode
CN104485724A (en) * 2014-12-31 2015-04-01 展讯通信（上海）有限公司 Method and device for charging to-be-charged equipment, to-be-charged equipment and charging system
CN105591431A (en) * 2015-12-31 2016-05-18 宇龙计算机通信科技(深圳)有限公司 Charging method and equipment of mobile terminal, and mobile terminal
CN105846498A (en) * 2016-04-29 2016-08-10 上海与德通讯技术有限公司 Wireless charge module, electronic device and wireless charge method

Also Published As

Publication number Publication date
CN106655359A (en) 2017-05-10

Similar Documents

Publication Publication Date Title
CN106505751B (en) Wireless charging method and device based on WiFi communication
US11355963B2 (en) Device to-be-charged, wireless charging apparatus, and wireless charging method
KR102042113B1 (en) Method for controlling wireless power of receiver in wireless power transmitting/receiving system and the receiver
US10804746B2 (en) Method and apparatus for controlling wireless charging during mode transition of a wireless power receiving device
US11108279B2 (en) Method for determining cross connection in wireless charging
JP6942883B2 (en) Equipment to be charged, wireless charging method and system
US9979439B2 (en) Wireless power transmitter and receiver, and method for transmitting emergency information in a wireless charging network
US20170294799A1 (en) Wireless power transmitting unit, wireless power receiving unit, and control methods thereof
US9125160B2 (en) Wireless power receiver and method for setting sleep mode in wireless power receiver
KR101933462B1 (en) Wireless power receiver for controlling magnitude of wireless power
US20120280648A1 (en) Apparatus and method for charging wireline and wireless powers
US9257856B2 (en) Wireless power transmitter and method of controlling the same
CN105453379B (en) The power management of induction type charging system
US11611244B2 (en) Mobile terminal, charging device for wirelessly charging the mobile terminal and charging method thereof
KR20130142862A (en) Power control method for considering situation of wireless power receiver in wireless power transmitter and the wireless power transmitter thereof
JP2015012761A (en) Power-receiving device and non-contact power-feeding system
CN103812195A (en) Wireless charge and discharge circuit, terminal device and wireless charge and discharge method
KR102484519B1 (en) Charging standby equipment and charging control method
CN112823459B (en) Charging control method, device to be charged, wireless charging device and storage medium
CN106655359B (en) Wireless charging method and device based on NFC communication
CN106787259B (en) Wireless charging method and device based on Bluetooth communication
Satyamoorthy et al. Wireless power receiver for mobile devices supporting inductive and resonant operating modes
US20160099600A1 (en) Wireless charging method and wireless charging system
US20190148970A1 (en) Communication device, control program, and non-contact power-supply system
CN118739631A (en) Wireless charging circuit, wireless charging module and electronic equipment

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant