CN107947305A - A kind of wireless charging circuit, system, method and terminal device - Google Patents
A kind of wireless charging circuit, system, method and terminal device Download PDFInfo
- Publication number
- CN107947305A CN107947305A CN201711251046.0A CN201711251046A CN107947305A CN 107947305 A CN107947305 A CN 107947305A CN 201711251046 A CN201711251046 A CN 201711251046A CN 107947305 A CN107947305 A CN 107947305A
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- voltage
- charging
- buck
- current
- direct current
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Classifications
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- 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
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
-
- 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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
- H02M3/072—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps adapted to generate an output voltage whose value is lower than the input voltage
Abstract
The embodiment of the invention discloses a kind of wireless charging circuit, system, method and terminal device, it may include electric energy receiving module, rectification module, control module and buck modular converter, wherein：Electric energy receiving module, the alternating current that the electric energy transmitting module for receiving power supply adaptor is launched；Rectification module, for alternating current to be converted to direct current；Control module, for gathering the charging voltage and charging current of battery to be charged, and determines according to the voltage and charging voltage of direct current the conduction mode of buck modular converter；Buck modular converter, for based on conduction mode, the voltage of direct current being adjusted to charging voltage, the electric current of direct current is adjusted to charging current.Compared with the prior art, the main charge and discharge electric device of buck modular converter is capacitance, it is thus possible to lifts charge efficiency；And high pressure can be converted to low pressure by buck modular converter, reduced the electric current for flowing through its front stage circuits, improved charging security.
Description
Technical field
The present invention relates to charging technique field, more particularly to a kind of wireless charging circuit, system, method and terminal device.
Background technology
It is stronger and stronger with terminal function, the charging technique of terminal device also constantly developed and into
Step, in order to lift the convenience of charging, wireless charging mode has slowly become a kind of new charge trend.
Specifically, it can support that the terminal device of wireless charging is seldom on the market at present, and, the nothing in these terminal devices
The lengthy and tedious complexity of framework of line charging circuit, such as may include electric energy receiving coil, decompression transducer (Buck converters) and one
Level or multilevel decompression formula charging circuit (Buck Charger).Due to Buck circuits can there are transfer efficiency it is relatively low the problem of,
Thus two-stage (or multistage) Buck circuits can further reduce the charge efficiency of wireless charging circuit；Furthermore due to Buck circuits
Also there is the problem of more serious of generating heat, thus can also influence the security of terminal device in charging process.
That is, there are charge efficiency is relatively low and the problem of charging security is relatively low for existing wireless charging circuit.
The content of the invention
It is existing to solve an embodiment of the present invention provides a kind of wireless charging circuit, system, method and terminal device
Charge efficiency present in wireless charging circuit is relatively low and the problem of charging security is relatively low.
An embodiment of the present invention provides a kind of wireless charging circuit, including electric energy receiving module, rectification module, control module
And buck modular converter, wherein：
The electric energy receiving module, the alternating current that the electric energy transmitting module for receiving power supply adaptor is launched；
The rectification module, for the alternating current to be converted to direct current；
The control module, for gathering the charging voltage and charging current of battery to be charged, and according to the direct current
The voltage and the charging voltage of electricity determine the conduction mode of the buck modular converter；
The buck modular converter, for based on the conduction mode, the voltage of the direct current to be adjusted to described
Charging voltage, the electric current of the direct current is adjusted to the charging current；
Wherein, the buck modular converter includes one or more buck transform subblock parallel with one another；
For any buck transform subblock, the buck transform subblock is used in receive that the control module sends the
During one control signal, using the first conduction mode；When receiving the second control signal that the control module is sent, using the
Two conduction modes；First conduction mode is to turn on the first path of the buck modular converter and second logical in turn
Road, second conduction mode are the third path and the first path for turning on the buck modular converter in turn；Described
One path can adjust the voltage of the direct current to half, and the alternate path can adjust the voltage of the direct current
To zero, the third path can remain unchanged the voltage of the direct current.
Specifically, the control module, specifically for if it is determined that the voltage of the direct current is not less than the charging voltage
Twice, it is determined that the conduction mode of the buck modular converter is the first conduction mode；If it is determined that the electricity of the direct current
Twice of pressure less than the charging voltage, it is determined that the conduction mode of the buck modular converter is the second conduction mode.
Alternatively, the buck transform subblock includes first switch, second switch, third switch, the 4th switch, the
One capacitance, inductance and the second capacitance, wherein：
The first switch, the second switch, the 3rd switch and the 4th switch are sequentially connected in series；
One end of first capacitance is connected with the input terminal of the output terminal of the first switch and the second switch,
The other end is connected with the output terminal of the described 3rd switch and the input terminal of the 4th switch；
One end of the inductance is connected with the output terminal of the second switch with the input terminal of the described 3rd switch, the other end
It is connected with one end of second capacitance；
The output terminal of the other end of second capacitance and the 4th switch is as public negative terminal.
Further, the wireless charging circuit further includes charge pump charging module, wherein：
The control module, is additionally operable to, when the charging stage of the definite battery to be charged is constant-current phase, control institute
Charge pump charging module is stated to power on；
The buck modular converter, specifically for based on the conduction mode, by the voltage of the direct current adjust to
First object voltage, the electric current of the direct current is adjusted to first object electric current；
The charge pump charging module, for adjusting the first object voltage to the charging voltage, by described
One target current is adjusted to the charging current；
Wherein, the charge pump charging module includes one or more charge pump charging submodule parallel with one another.
Specifically, the control module is default minimum specifically for being more than in the charging voltage of the battery to be charged
Voltage threshold, and when being less than default ceiling voltage threshold value, the charging stage for determining the battery to be charged is constant-current phase.
Further, the wireless charging circuit further includes buck charging module, wherein：
The control module, is additionally operable to when the charging stage of the definite battery to be charged is non-constant-current phase, control
The buck charging module powers on；
The buck modular converter, specifically for based on the conduction mode, by the voltage of the direct current adjust to
Second target voltage, the electric current of the direct current is adjusted to the second target current；
The buck charging module, for adjusting second target voltage to the charging voltage, by described
Two target currents are adjusted to the charging current；
Wherein, the buck charging module includes one or more buck charging submodule parallel with one another.
Alternatively, the control module, also particularly useful for the battery to be charged charging voltage no more than it is described most
Low voltage threshold, or during not less than the ceiling voltage threshold value, the charging stage for determining the battery to be charged is non-constant current
Stage.
Further, the wireless charging circuit further includes switch module, wherein：
The switch module, for when there is excess temperature, overvoltage, under-voltage or over-current state in the wireless charging circuit,
Disconnect the wireless charging circuit.
Correspondingly, the embodiment of the present invention additionally provides a kind of terminal device, including battery to be charged and the present invention are implemented
Wireless charging circuit described in example.
Correspondingly, the embodiment of the present invention additionally provides a kind of wireless charging system, including power supply adaptor and the present invention
Terminal device described in embodiment.
Correspondingly, the embodiment of the present invention additionally provides a kind of wireless charging method, including：
Receive the alternating current that the electric energy transmitting module of power supply adaptor is launched；
The alternating current is converted into direct current；
Gather the charging voltage and charging current of battery to be charged, and according to the voltage of the direct current and described fill
Piezoelectric voltage determines the conduction mode of the buck modular converter；
Buck modular converter is based on the conduction mode, and the voltage of the direct current is adjusted to the charging voltage,
The electric current of the direct current is adjusted to the charging current；
Wherein, the buck modular converter includes one or more buck transform subblock parallel with one another；
For any buck transform subblock, the buck transform subblock is used in receive that the control module sends the
During one control signal, using the first conduction mode；When receiving the second control signal that the control module is sent, using the
Two conduction modes；First conduction mode is to turn on the first path of the buck modular converter and second logical in turn
Road, second conduction mode are the third path and the first path for turning on the buck modular converter in turn；Described
One path can adjust the voltage of the direct current to half, and the alternate path can adjust the voltage of the direct current
To zero, the third path can remain unchanged the voltage of the direct current.
Specifically, leading for the buck modular converter is determined according to the voltage of the direct current and the charging voltage
Logical mode, including：
If it is determined that the voltage of the direct current is not less than twice of the charging voltage, it is determined that the buck modulus of conversion
The conduction mode of block is the first conduction mode；If it is determined that the voltage of the direct current is less than twice of the charging voltage, then really
The conduction mode of the fixed buck modular converter is the second conduction mode.
Alternatively, buck modular converter is based on the conduction path, and the voltage of the direct current is adjusted to described and is filled
Piezoelectric voltage, the electric current of the direct current is adjusted to the charging current, including：
When the charging stage of the definite battery to be charged is constant-current phase, control charge pump charging module powers on；
The buck modular converter is based on the conduction path, and the voltage of the direct current is adjusted to first object electricity
Pressure, the electric current of the direct current is adjusted to first object electric current；
The charge pump charging module adjusts the first object voltage to the charging voltage, by the first object
Electric current is adjusted to the charging current；
Wherein, the charge pump charging module includes one or more charge pump charging submodule parallel with one another.
Alternatively, buck modular converter is based on the conduction path, and the voltage of the direct current is adjusted to described and is filled
Piezoelectric voltage, the electric current of the direct current is adjusted to the charging current, is further included：
When the charging stage of the definite battery to be charged is non-constant-current phase, control buck charging module powers on；
The buck modular converter is based on the conduction path, and the voltage of the direct current is adjusted to the second target electricity
Pressure, the electric current of the direct current is adjusted to the second target current；
The buck charging module adjusts second target voltage to the charging voltage, by second target
Electric current is adjusted to the charging current；
Wherein, the buck charging module includes one or more buck charging submodule parallel with one another.
Further, the wireless charging method further includes：
When excess temperature, overvoltage, under-voltage or over-current state occurs in the wireless charging circuit, the wireless charging electricity is disconnected
Road.
Further, the embodiment of the present invention additionally provides a kind of computer equipment, including memory and processor, its
In：
The memory, instructs for storage program；
The processor, sheet is performed for calling the programmed instruction stored in the memory, and according to the program of acquisition
Wireless charging method described in inventive embodiments.
Correspondingly, the embodiment of the present invention additionally provides a kind of computer-readable storage medium, the computer-readable storage medium storage
There are computer executable instructions, the computer executable instructions are used to make the computer perform described in the embodiment of the present invention
Wireless charging method.
The present invention has the beneficial effect that：
An embodiment of the present invention provides a kind of wireless charging circuit, system, method and terminal device, it may include electric energy receives
Module, rectification module, control module and buck modular converter, wherein：The electric energy receiving module, is fitted for receiving power supply
The alternating current that the electric energy transmitting module of orchestration is launched；The rectification module, for the alternating current to be converted to direct current；Institute
State control module, for gathering the charging voltage and charging current of battery to be charged, and according to the voltage of the direct current with
And the charging voltage determines the conduction mode of the buck modular converter；The buck modular converter, for based on institute
Conduction mode is stated, the voltage of the direct current is adjusted to the charging voltage, the electric current of the direct current is adjusted to described
Charging current；Wherein, the buck modular converter includes one or more buck transform subblock parallel with one another；
For any buck transform subblock, the buck transform subblock is used in receive that the control module sends the
During one control signal, using the first conduction mode；When receiving the second control signal that the control module is sent, using the
Two conduction modes；First conduction mode is to turn on the first path of the buck modular converter and second logical in turn
Road, second conduction mode are the third path and the first path for turning on the buck modular converter in turn；Described
One path can adjust the voltage of the direct current to half, and the alternate path can adjust the voltage of the direct current
To zero, the third path can remain unchanged the voltage of the direct current.Compared with the prior art, in the embodiment of the present invention
In, the main charge and discharge electric device of the buck modular converter can be capacitance, it is thus possible to increase the conversion of wireless charging circuit
Efficiency, and then lift the charge efficiency of wireless charging circuit；And the buck modular converter high pressure can be converted to it is low
Pressure, reduces the electric current for the front stage circuits for flowing through the buck modular converter, not only improves the charging of wireless charging circuit
Efficiency, it is ensured that the security of wireless charging circuit.
Brief description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, without creative efforts, other can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 show the structure diagram of the first wireless charging circuit provided in the embodiment of the present invention one；
Fig. 2 show the first possible specific knot of the first wireless charging circuit provided in the embodiment of the present invention one
Structure schematic diagram；
Fig. 3 show second of possible specific knot of the first wireless charging circuit provided in the embodiment of the present invention one
Structure schematic diagram；
Fig. 4 show the structure diagram of the buck transform subblock provided in the embodiment of the present invention one；
Fig. 5 show the structure diagram of second of the wireless charging circuit provided in the embodiment of the present invention one；
Fig. 6 show the first possible concrete structure of the charge pump charging submodule provided in the embodiment of the present invention one
Schematic diagram；
Fig. 7 show second of possible concrete structure of the charge pump charging submodule provided in the embodiment of the present invention one
Schematic diagram；
Fig. 8 show the first possible specific knot of second of the wireless charging circuit provided in the embodiment of the present invention one
Structure schematic diagram；
Fig. 9 show second of possible specific knot of second of the wireless charging circuit provided in the embodiment of the present invention one
Structure schematic diagram；
Figure 10 show the structure diagram of the third wireless charging circuit provided in the embodiment of the present invention one；
Figure 11 show the concrete structure schematic diagram of the buck charging submodule provided in the embodiment of the present invention one；
Figure 12 show the third wireless charging circuit for being provided in the embodiment of the present invention one the first is possible specific
Structure diagram；
Figure 13 show second of the third wireless charging circuit provided in the embodiment of the present invention one it is possible specific
Structure diagram；
Figure 14 show the 4th kind of wireless charging circuit being provided in the embodiment of the present invention one the first is possible specific
Structure diagram；
Figure 15 show second of the 4th kind of wireless charging circuit provided in the embodiment of the present invention one it is possible specific
Structure diagram；
Figure 16 show the 4th kind of wireless charging circuit being provided in the embodiment of the present invention one the third is possible specific
Structure diagram；
Figure 17 show the 4th kind of the 4th kind of wireless charging circuit provided in the embodiment of the present invention one it is possible specific
Structure diagram；
Figure 18 show the structure diagram of the terminal device provided in the embodiment of the present invention one；
Figure 19 show the structure diagram of the wireless charging system provided in the embodiment of the present invention one；
Figure 20 show the flow diagram of the wireless charging method provided in the embodiment of the present invention two；
Figure 21 show the structure diagram of the computer equipment provided in the embodiment of the present invention three.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearer, the present invention is made below in conjunction with attached drawing into
One step it is described in detail, it is clear that described embodiment only part of the embodiment of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
All other embodiment, belongs to the scope of protection of the invention.
Embodiment one：
In order to solve, charge efficiency present in existing wireless charging circuit is relatively low and charging security is relatively low asks
Topic, an embodiment of the present invention provides a kind of wireless charging circuit.Wherein, the wireless charging circuit can be generally disposed at accordingly
Wireless terminal device in, be such as arranged in mobile phone, tablet computer, intelligent watch and camera, for being set in the terminal
It is standby to establish with corresponding wireless adapter when being of coupled connections, the electric energy received from the wireless adapter is transferred to the end
In the battery to be charged of end equipment, certainly, the wireless charging circuit can also be independently operated, and this is not repeated.
Specifically, as shown in Figure 1, it is the circuit knot of the first wireless charging circuit described in the embodiment of the present invention one
Structure schematic diagram.It should be noted that as shown in Figure 1, the first described wireless charging circuit may include electric energy receiving module 11, whole
Flow module 12, control module 13, buck modular converter 14, wherein：
The electric energy receiving module 11, the alternating current launched available for the electric energy transmitting module for receiving power supply adaptor；
The rectification module 12, direct current is converted to available for by the alternating current；
The control module 13, available for the charging voltage and charging current for gathering battery to be charged, and according to described
The voltage of direct current and the charging voltage determine the conduction mode of the buck modular converter；
The buck modular converter 14, available for based on the conduction mode, by the voltage of the direct current adjust to
The charging voltage, the electric current of the direct current is adjusted to the charging current；
Wherein, the buck modular converter 14 may include one or more buck conversion submodule parallel with one another
Block；For any buck transform subblock, the buck transform subblock is used to receive the control module transmission
First control signal when, using the first conduction mode；When receiving the second control signal that the control module is sent, adopt
With the second conduction mode；First conduction mode is the first path and second for turning on the buck modular converter in turn
Path, second conduction mode are the third path and the first path for turning on the buck modular converter in turn；It is described
First path can adjust the voltage of the direct current to half, and the alternate path can be by the voltage tune of the direct current
It is whole to zero, the third path can remain unchanged the voltage of the direct current.
That is, in embodiments of the present invention, the wireless charging circuit may include electric energy receiving module, rectification mould
Block, control module and buck modular converter, wherein：The electric energy receiving module, for receiving the electric energy of power supply adaptor
The alternating current that transmitting module is launched；The rectification module, for the alternating current to be converted to direct current；The control mould
Block, for gathering the charging voltage and charging current of battery to be charged, and according to the voltage of the direct current and described fills
Piezoelectric voltage determines the conduction mode of the buck modular converter；The buck modular converter, for based on the conducting side
Formula, the voltage of the direct current is adjusted to the charging voltage, and the electric current of the direct current is adjusted to the charging current；
Wherein, the buck modular converter includes one or more buck transform subblock parallel with one another；For any
Buck transform subblock, the buck transform subblock are used to receive the first control letter of the control module transmission
Number when, using the first conduction mode；When receiving the second control signal that the control module is sent, using the second conducting side
Formula；First conduction mode is to turn on the first path and alternate path of the buck modular converter in turn, described the
Two conduction modes are the third path and the first path for turning on the buck modular converter in turn；First path can
The voltage of the direct current is adjusted to half, the alternate path can adjust the voltage of the direct current to zero, described
Third path can remain unchanged the voltage of the direct current.Compared with the prior art, in embodiments of the present invention, the drop
The main charge and discharge electric device of pressure type modular converter can be capacitance, it is thus possible to increase the transfer efficiency of wireless charging circuit, and then
Lift the charge efficiency of wireless charging circuit；And high pressure can be converted to low pressure by the buck modular converter, reduce stream
The electric current of the front stage circuits of the buck modular converter is crossed, thus reduces the circuit loss of the wireless charging circuit, is delayed
The heating problem of wireless charging circuit has been solved, not only improve the charge efficiency of wireless charging circuit, it is ensured that wireless charging
The security of circuit.
Specifically, the electric energy receiving module 11 generally can be corresponding electric energy receiving coil, in the power supply adaptor
The electric energy transmitting module generally can be corresponding electric energy transmitting coil；The electric energy receiving coil and electric energy transmitting
Coil can be the arbitrary shapes such as rectangle, circle or triangle, as long as can be mutually matched, and electric induction, magnetic strength mutually occur
Should, magnetic resonance or the interaction of electromagnetic wave.Wherein, the coil of the electric energy receiving coil and the electric energy transmitting coil
Diameter, line warp, material can flexibly be set according to actual conditions, such as may be configured as 100mm (millimeter), 0.5mm (millimeter), enamel-cover
Copper wire etc., does not repeat this.
Alternatively, the rectification module 12 usually may include corresponding rectification circuit, such as can be half-wave rectifying circuit, all-wave
Rectification circuit or bridge rectifier etc..Wherein, the half-wave rectifying circuit, full-wave rectifying circuit and bridge rectifier
It can be made of devices such as corresponding diode or thyristors.Certainly, it is described whole in the scene more demanding to transfer efficiency
Device in flow module 12 can also be transistor, such as triode, metal-oxide-semiconductor.
It should be noted that the rectification circuit in the rectification module 12 can be also integrated in addition to it can voluntarily build
In corresponding logic chip, to build corresponding rectification chip, the Miniaturization Design of terminal device etc., the embodiment of the present invention are realized
This is not limited in any way.
Specifically, the control module 13 generally can be the AP (Application in the terminal device
Processor, application processor), can be either the processing unit or other processing being additionally provided in the terminal device
Logic, such as CPU (Central Processing Unit, central processing unit), MCU (Microcontroller Unit, micro-control
Unit processed), program code etc., as long as being capable of the charging voltage and charging current of the battery to be charged, and filled based on described
The voltage for the direct current that piezoelectric voltage and rectification module 12 export, corresponding control letter is sent to the buck modular converter 14
Number.
It should be noted that in the embodiment of the present invention, the control signal that the control module 13 is sent can also be according to reality
Situation is flexibly set, such as can using high level signal as first control signal, using low level signal as second control signal；Or
Person, using low level signal as first control signal, using high level signal as second control signal etc..Certainly, the control
The actual format of signal is alternatively corresponding program code, digital signal or analog signal etc., as long as disclosure satisfy that actual need
Ask, this is not repeated.
Alternatively, the control module 13, be particularly used in the charging voltage that gathers the battery to be charged in real time and
Charging current；Alternatively, every the charging voltage and charging current of battery to be charged described in setting duration collection.
It should be noted that it is described setting duration can flexibly be set according to actual conditions, such as may be configured as 1ms (millisecond),
1s (second), 1min (dividing) etc., as long as disclosure satisfy that actual accuracy requirement, the embodiment of the present invention does not make this any limit
It is fixed.
Alternatively, as shown in Fig. 2, its be the embodiment of the present invention one in provide the first wireless charging circuit the first
Possible concrete structure schematic diagram.Specifically, as shown in Figure 2, the buck in the first described wireless charging circuit turns
It can only include a buck transform subblock, such as 141 etc. shown in Fig. 2 in mold changing block 14.
It should be noted that the member due to being used for discharge and recharge in the buck modular converter 14 described in the embodiment of the present invention
Part is mainly capacitance, it is thus possible to effectively reduces circuit loss, lifts charge efficiency；And capacity cell is not in that fever is asked
Topic, it is thus possible to which avoiding wireless charging circuit, either terminal device generation fever phenomenon improves wireless charging circuit or end
The security of end equipment；Furthermore the buck modular converter 14 described in the embodiment of the present invention can be changed by high efficient, high pressure
For low pressure, reduce the electric current for the front stage circuits for flowing through the buck modular converter 14 so that flow through electric energy receiving module 11,
The electric current of the grade of rectification module 12 is smaller, reduce further circuit loss, improves the charge efficiency of wireless charging circuit.
Still optionally further, as shown in figure 3, it is the of the first wireless charging circuit provided in the embodiment of the present invention
Two kinds of possible concrete structure schematic diagrams.Specifically, from the figure 3, it may be seen that the decompression in the first described wireless charging circuit
Formula modular converter 14 may also include N number of buck transform subblock parallel with one another, such as 141~14N shown in Fig. 3 etc.,
Wherein, N is the positive integer more than or equal to 2.
It should be noted that multiple buck transform subblocks is parallel with one another, whole buck conversion can be effectively reduced
The equivalent resistance of module, this electric current for allowing for flowing through the buck modular converter are not in compared with lossy, so that into one
Step improves the charge efficiency of wireless charging circuit, and provides the foundation for large current charge.
Furthermore in embodiments of the present invention, the specification of each device in each buck transform subblock can be set
It is set to consistent so that ESR (Equivalent Series Resistance, the equivalent string of each buck transform subblock
Join resistance) can be essentially identical, be not in not so as to ensure that the electric current for flowing through each buck transform subblock is equal
The problem of with current-unbalance on buck transform subblock, the embodiment of the present invention does not repeat this.
Specifically, the control module 13, is particularly used in if it is determined that the voltage of the direct current is not less than the charging
Twice of voltage, it is determined that the conduction mode of the buck modular converter is the first conduction mode；If it is determined that the direct current
Voltage be less than twice of the charging voltage, it is determined that the conduction mode of the buck modular converter is the second conducting side
Formula.
For example, it is assumed that the charging voltage is 3.5V, the voltage for the direct current that the rectification module 12 exports is 7.5V, by
In 3.5V*2=7V≤7.5V, thus it can determine that the conduction mode of the buck modular converter is the first conduction mode；Assuming that
The charging voltage is 3.5V, and the voltage for the direct current that the rectification module 12 exports is 6V, due to 3.5V*2=7V ＞ 6V, because
And it can determine that the conduction mode of the buck modular converter is the second conduction mode.
Specifically, as shown in figure 4, it is the structural representation of the buck transform subblock provided in an embodiment of the present invention
Figure.Specifically, as shown in Figure 4, the buck transform subblock may include first switch Q1, second switch Q2, the 3rd switch
Q3, the 4th switch Q4, the first capacitance C1, inductance L and the second capacitance C2, wherein：
The first switch Q1, the second switch Q2, the 3rd switch Q3 and the 4th switch Q4 go here and there successively
Connection；
One end of the first capacitance C1 and the input of the output terminal of the first switch Q1 and the second switch Q2
End connection, the other end are connected with the output terminal of the described 3rd switch Q3 and the input terminal of the 4th switch Q4；
One end of the inductance L is connected with the output terminal of the second switch Q2 with the input terminal of the described 3rd switch Q3,
The other end is connected with one end of the second capacitance C2；
The output terminal of the other end of the second capacitance C2 and the 4th switch Q4 are as public negative terminal.
Wherein, the capacitance of the first capacitance C1 and the second capacitance C2 can flexibly be set according to actual conditions,
It such as may be configured as 10uF (method), 1 μ F (microfarad) or 100pF (pico farad)；The inductance value of the inductance L also can be according to actual feelings
Condition is flexibly set, and such as may be configured as 10uH (henry), 1uH (henry) or 0.1uH (henry), and the embodiment of the present invention does not make this any
Limit.
Alternatively, the first path described in the embodiment of the present invention can be by the first switch Q1, the first capacitance C1, the
The path of three switch Q3, inductance L and the second capacitance C2 compositions, alternatively, by the described 4th switch Q4, the first capacitance C1, second
Switch the path of Q2, inductance L and the second capacitance C2 compositions；The alternate path can be to be opened by the described 4th switch Q4, the 3rd
Close the path of Q3, inductance L and the second capacitance C2 compositions；The third path be by the first switch Q1, second switch Q2,
The path of inductance L and the second capacitance C2 compositions.Therefore, as shown in figure 4, when the first path turns on, Vsw=Vin/2；
When two paths turn on, Vsw=0；When third path turns on, Vsw=Vin.In the first path and alternate path alternate conduction,
Vout can be between 0 and Vin/2, in third path and the first path alternate conduction, Vout can be at Vin/2 and Vin it
Between, this is not repeated.
As shown in the above, compared to existing charge pump charging circuit (Charge Pump i.e. described hereinafter
Converter circuits), due to not including inductance element, thus the charge pump charging circuit in the charge pump charging circuit
Output voltage can only be the half of input voltage, and possess institute in the buck transform subblock described in the embodiment of the present invention
Inductance L is stated, thus the output voltage of the buck transform subblock can be defeated no more than the buck transform subblock
Enter the arbitrary value of voltage, so as to improve the flexibility of wireless charging circuit.
It should be noted that the control of each switching device in buck transform subblock described in the embodiment of the present invention
End processed can with corresponding controller either processor be connected it is open-minded to be performed under the control of corresponding controller or processor
Or the operation disconnected.Wherein, the controller or the processor can perform phase according to the control of the control module 13
The control operation answered, and, the controller or processor can be corresponding hardware device, or corresponding software program,
As long as it can realize the control to each switching device in the buck transform subblock.
Furthermore the buck transform subblock in the buck modular converter 14, can all correspond to a controller or
Buck transform subblock in the buck modular converter 14, can be also divided into one group or more than two by person's processor,
And be one controller of each group of correspondence or processor, this is not repeated.
Alternatively, the buck modular converter 14 described in the embodiment of the present invention can also be the multiple bucks being serially connected
The cascade circuit that modular converter 14 forms, since multistage buck modular converter 14 can realize multilevel decompression, it is thus possible to
Further reduce the electric current for the front stage circuits for flowing through the buck modular converter 14 so that electric energy receiving module 11, rectification mould
The pressure drop loss of the grade of block 12 can be reduced further, so as to further improve charge efficiency and the charging of wireless charging circuit
Security, the embodiment of the present invention do not repeat this.
Preferably, the control module 13 can be with the control terminal of each switching device in the buck transform subblock
It is electrically connected, to realize the control to each switching device in the buck transform subblock, such as controls each switching device
Conducting or shut-off.For example, when receiving the first control signal that the control module 13 is sent, the drop is turned in turn
First group of switching tube and second group of switching tube in pressure type transform subblock, wherein, first group of switching tube includes first
The switch Q3 of Q1 and the 3rd are switched, alternatively, including the switch Q4 of second switch Q2 and the 4th, second group of switching tube includes the
Three switch Q3 and the 4th switch Q4；When receiving the second control signal that the control module 13 is sent, institute is turned in turn
The 3rd group of switching tube and the first group of switching tube in buck transform subblock are stated, wherein, the 3rd group of switching tube includes
First switch Q1 and second switch Q2.
Specifically, the first group of switching tube and second group of switching tube in the buck transform subblock are turned in turn,
It may include：
For a certain signal period, in the first half cycle of the signal period, first group of switching tube is turned on, in institute
State in the later half cycle of signal period, turn on second group of switching tube.
It should be noted that in the first half cycle of the signal period, can also turn in turn the first minor group switches pipe with
And the second minor group switches pipe, wherein, the first minor group switches pipe includes the switches of first switch Q1 and the 3rd Q3, and described second
Minor group switches pipe includes the switch Q4 of second switch Q2 and the 4th, to realize the first capacitance in the buck transform subblock
The discharge and recharge of C1.
For example, in the first stage of first half cycle, the switch Q3 of the first switch Q1 and the 3rd can be turned on, in preceding half cycle
The second stage of phase, can turn on the switch Q4 of the second switch Q2 and the 4th, this is not repeated.
It should be noted that under normal conditions, it will can be opened by first switch Q1, second switch Q2, the 3rd switch Q3, the 4th
The circuit structure that pass Q4, the first capacitance C1 and the second capacitance C2 are formed is known as novel B uck circuits, compared to existing
Buck circuits, the main charge and discharge electric device in novel B uck circuits is capacitance, it is thus possible to effectively increases down-conversion ratio, avoids
The fever of wireless charging circuit；And difference of the novel B uck circuits between input voltage and output voltage is larger (such as larger than sets
Determine difference threshold etc., wherein, difference threshold can flexibly be set according to actual conditions) when, very high conversion effect can not only be provided
Rate, additionally it is possible to the electric current for the front stage circuits for flowing through novel B uck circuits is substantially reduced, so as to reduce the damage of wireless charging circuit
Pressure drop is consumed, improves the charge efficiency and charging security of wireless charging circuit, the embodiment of the present invention does not repeat this.
Further, the first switch Q1, second switch Q2, the 3rd switch Q3 and the 4th switch Q4 may each comprise one
A or in parallel two or more switch element, so as to be effectively reduced the first switch Q1, second switch Q2, the 3rd switch
The conducting resistance of the switches of Q3 and the 4th Q4, increases the electric current in the wireless charging circuit, accelerates the wireless charging circuit
Charging rate, reduce the charging interval of the wireless charging circuit, improve the charge efficiency of the wireless charging circuit, this hair
Bright embodiment does not repeat this.
Preferably, the switch element can be transistor.
Alternatively, the transistor may include triode or field-effect tube.
It should be noted that if the switch element is triode, then the control terminal of the switch element can be three poles
The base stage of pipe, the input terminal of the switch element can be the collector (or emitter) of triode, the switch element it is defeated
Outlet can be the emitter (or collector) of triode；If the switch element is field-effect tube, the switch element
Control terminal can be the grid of field-effect tube, and the input terminal of the switch element can be the drain electrode (or source electrode) of field-effect tube,
The output terminal of the switch element can be the source electrode (or drain electrode) of field-effect tube.Certainly, the input terminal of the switch element and
Output terminal can also be intercoursed, and the embodiment of the present invention is not limited in any way this.
Still optionally further, the triode may include NPN type triode, PNP type triode, and the field-effect tube can wrap
N-channel type field-effect tube and P-channel type field-effect tube etc. are included, the embodiment of the present invention is not also limited in any way this.
In addition, it is necessary to explanation, the first switch Q1, second switch Q2, the 3rd switch Q3 and the 4th switch Q4
Can also be any hardware switch that can realize switching function, such as can be single-pole double-throw switch (SPDT), double-point double-throw switch, the present invention
Embodiment is not limited in any way this.
Alternatively, the first capacitance C1 and the second capacitance C2 at least may include that one or more is in parallel
Capacity cell.Since multiple capacity cells in parallel can effectively reduce the ESR of integral capacitor, thus, can effectively it increase
Electric current in the wireless charging circuit, accelerates the charging rate of the wireless charging circuit, reduces the wireless charging circuit
Charging interval, improve the charge efficiency of the wireless charging circuit, the embodiment of the present invention does not also repeat this.
Further, as shown in figure 5, the structure of its second of wireless charging circuit to be provided in the embodiment of the present invention is shown
It is intended to.Specifically, as shown in Figure 5, second of wireless charging circuit may also include charge pump charging module 15, wherein：
The control module 13, it may also be used for when the charging stage of the definite battery to be charged is constant-current phase, control
The charge pump charging module is made to power on；
The buck modular converter 14, is particularly used in based on the conduction mode, by the voltage tune of the direct current
It is whole to first object voltage, the electric current of the direct current is adjusted to first object electric current；
The charge pump charging module 15, adjusts to the charging voltage available for by the first object voltage, by institute
First object electric current is stated to adjust to the charging current；
Wherein, the charge pump charging module 15 may include one or more charge pump charging submodule parallel with one another
Block 151.
Specifically, as shown in fig. 6, it may for the first of the charge pump charging submodule described in the embodiment of the present invention
Concrete structure schematic diagram.It will be appreciated from fig. 6 that charge pump charging submodule may include the 5th switch Q5, the 6th switch Q6, the
Seven switch Q7, the 8th switch Q8, the 3rd capacitance C3 and the 4th capacitance C4, wherein：
The input terminal of the 5th switch Q5 can be connected with the output terminal of the buck modular converter 14, output terminal can be with
The input terminal of the 7th switch Q7, the first end of the 3rd capacitance C3 are connected；
The input terminal of the 6th switch Q6 switchs the defeated of Q8 with the second end of the 3rd capacitance C3 and the described 8th
Enter end to be connected, output terminal is connected with the first end of the 4th capacitance C4 and the output terminal of the 7th switch Q7；
The output terminal of the 8th switch Q8 is connected with the second end of the 4th capacitance C4, and is used as public negative terminal.
It should be noted that the control terminal of charge pump charging submodule each switching device in the block also can with it is corresponding
Controller either processor output terminal be electrically connected with the control of the controller or processor turn on or turn off,
Such as under the first signal, the switch Q6 of switch Q5 and the 6th of conducting the 5th, under secondary signal, the switch Q7 and the of conducting the 7th
Eight switch Q8 etc..
Preferably, the controller or processor for controlling charge pump charging submodule each switching device in the block can be
Control module 13 described in the embodiment of the present invention, the embodiment of the present invention does not repeat this.
Furthermore, it is necessary to explanation, the 5th switch Q5, the 6th switch Q6, the 7th switch described in the embodiment of the present invention
The switches of Q7 and the 8th Q8 etc. may also comprise one or more switch element in parallel, be opened so as to be effectively reduced the 5th
The conducting resistance of Q5, the 6th switch Q6, the 7th switch Q7 and the 8th switch Q8 are closed, lifts charge efficiency.
Certainly, the 5th switch Q5, the 6th switch Q6, the 7th switch Q7 and the 8th switch Q8 can be opened with foregoing first
It is identical or different to close Q1, second switch Q2, the 3rd switch Q3 and the 4th switch Q4 etc., this is not repeated.
Alternatively, as shown in fig. 7, it is possible second of the charge pump charging submodule described in the embodiment of the present invention
Concrete structure schematic diagram.Specifically, as shown in Figure 7, the charge pump charging submodule may also include compensating electric capacity Cc, its
In：
The first end of the compensating electric capacity Cc can be connected with the output terminal of the buck modular converter 14, second end with can
The output terminal of the second end of the 4th capacitance C4 and the 8th switch Q8 are connected, sub for charging to the charge pump
Module carries out corresponding current compensation.
As shown in the above, the charge pump charging submodule generally can be corresponding charge pump charging circuit, i.e., existing
Some Charge Pump Converter (charge pump conversion) circuits.Since the output voltage of charge pump charging circuit is usually
The half of input voltage, output current is usually twice of input current, thus the first object voltage can be the charging
Twice of voltage, first charging current can be the half of the charging current.
For example, when the charging voltage of the battery to be charged is 3.5V (volt), the first object voltage can be 7V
(volt), when the charging current of the battery to be charged is 2A (peace), the first object electric current can be 1A (peace), and the present invention is real
Example is applied not repeat this.
Furthermore, it is necessary to explanation, since the charging stage at this time is constant-current phase, this allows for flowing through whole wireless charging
The electric current of circuit is larger, and, be not in larger loss pressure drop when flowing through charge pump charging circuit due to high current, because
And charge efficiency and charging security can be greatly promoted, this is not repeated.
Alternatively, as shown in figure 8, it is that the first of second of wireless charging circuit provided in the embodiment of the present invention can
The concrete structure schematic diagram of energy.As shown in Figure 8, the charge pump charging module 15 in second of wireless charging circuit can
Only include a charge pump charging submodule, such as 151 etc. shown in Fig. 8.
It should be noted that since charge pump charging submodule can realize decompression and the effect of up-flow, this just can be into one
The electric current of its front stage circuits (such as electric energy receiving module 11, rectification module 12 and buck modular converter 14) is flowed through in step reduction,
So as to reduce further the circuit loss of the wireless charging circuit, improve the charge efficiency of the wireless charging circuit with
And charging security.
Alternatively, as shown in figure 9, it is that second of second of wireless charging circuit provided in the embodiment of the present invention can
The concrete structure schematic diagram of energy.As shown in Figure 9, the charge pump charging module 15 in second of wireless charging circuit can
Charge submodule, such as 151~15M shown in Fig. 9 including M charge pump, wherein, M is the positive integer more than or equal to 2, institute
State M and N may be configured as it is identical or different.
It should be noted that multiple charge pump charging submodules is parallel with one another, whole charge pump charging can be effectively reduced
The equivalent resistance of module, this electric current for allowing for flowing through the charge pump charging module are not in compared with lossy, so that into one
Step improves the charge efficiency of wireless charging circuit, and provides the foundation for large current charge.
Furthermore in embodiments of the present invention, the specification of each device in each charge pump charging submodule can be set
It is set to unanimously, this is to ensure that ESR (the Equivalent Series of each charge pump charging submodule
Resistance, equivalent series resistance) it is identical, so as to ensure to flow through the electric current phase of each charge pump charging submodule
Deng the embodiment of the present invention does not repeat this.
In addition, it is necessary to explanation, the charge pump charging module 15 may also include multiple charge pumps being serially connected and fill
Electric module 15, to realize the cascade of multiple charge pump charging modules 15, this, which just can further be reduced, flows through the charge pump and fills
The electric current of the front stage circuits of electric module 15 so that electric energy receiving module 11, rectification module 12 and buck modular converter 14
Decompression loss reduces, and improves the charge efficiency of wireless charging and the charging security of wireless charging, this is not repeated.
Specifically, the control module 13, the charging voltage being particularly used in the battery to be charged are more than default
Minimum voltage threshold value, and when being less than default ceiling voltage threshold value, the charging stage for determining the battery to be charged is constant current rank
Section (i.e. CC stages).
Wherein, the minimum voltage threshold value and the ceiling voltage threshold value can flexibly be set according to actual conditions, such as
2.8V (volt) and 3.8V (volt) are may be configured as, or may be configured as 3.0V (volt) and 4.6V (volt) etc., the embodiment of the present invention is to this
It is not limited in any way.
Further, as shown in Figure 10, it is the structure of the third wireless charging circuit provided in the embodiment of the present invention
Schematic diagram.Specifically, as shown in Figure 10, the third described wireless charging circuit may also include buck charging module 16, wherein：
The control module 13, it may also be used for when the charging stage of the definite battery to be charged is non-constant-current phase,
The buck charging module is controlled to power on；
The buck modular converter 14, is particularly used in based on the conduction mode, by the voltage tune of the direct current
It is whole to the second target voltage, the electric current of the direct current is adjusted to the second target current；
The buck charging module 16, adjusts to the charging voltage available for by second target voltage, by institute
The second target current is stated to adjust to the charging current；
Wherein, the buck charging module 16 may include one or more buck charging submodule parallel with one another
Block 161.
Specifically, as shown in figure 11, the concrete structure of its submodule that charges for the buck described in the embodiment of the present invention
Schematic diagram.As shown in Figure 11, buck charging submodule may include the 9th switch Q9, the tenth switch Q10, inductance L1 and
5th capacitance C5, wherein：
It is described 9th switch Q9 input terminal be connected with the output terminal of the buck modular converter 14, output terminal with it is described
The first end connection of the input terminal and the inductance L1 of tenth switch Q10；
The output terminal of the tenth switch Q10 is connected with the second end of the 5th capacitance C5, and is used as public negative terminal；
The second end of the inductance L1 is connected with the first end of the 5th capacitance C5.
It should be noted that the control of buck charging submodule each switching device in the block described in the embodiment of the present invention
End processed can be also electrically connected with corresponding controller or processor, to realize the conducting of switching device according to corresponding processing signal
With shut-off, such as when receiving the first processing signal, conducting the 9th switch Q9, when receiving second processing signal,
Turn on described tenth switch Q10 etc..
Preferably, the controller for controlling buck charging submodule each switch in the block can also be the embodiment of the present invention
Described in control module 13, this is not repeated.
Furthermore, it is necessary to explanation, the 9th switch Q9 and the tenth switch Q10 described in the embodiment of the present invention etc. also may be used
Including one or more switch element in parallel, so as to be effectively reduced the 9th switch Q9's and the tenth switch Q10
Conducting resistance, lifts charge efficiency.
Certainly, the 9th switch Q9 and the tenth switch Q10 can also be with foregoing first switch Q1, second switch Q2, the
Three switch Q3, the 4th switch Q4, the 5th switch Q5, the 6th switch Q6, the 7th switch Q7 and the 8th switch Q8 etc. it is identical or
It is different.
Further, the first capacitance C1 described in the embodiment of the present invention, the second capacitance C2, the 3rd capacitance C3, the 4th electricity
Hold C4, the 5th capacitance C5 and compensating electric capacity Cc etc., may each comprise mutual series-parallel capacity cell more than one or two；
The inductance L and inductance L1 may also comprise mutual series-parallel inductance element more than one or two, this is not repeated.
As shown in the above, the buck charging submodule generally can be existing Buck Charger circuits, right
This is not repeated.
Furthermore, it is necessary to explanation, since the charging stage at this time is non-constant-current phase, this allows for flowing through whole wireless
The electric current of charging circuit is smaller, and, be not in larger loss pressure when flowing through Buck Charger circuits due to low current
Drop, it is thus possible to greatly promote charge efficiency and charging security, do not repeat this.
Alternatively, as shown in figure 12, its be the embodiment of the present invention in provide the third wireless charging circuit the first
Possible concrete structure schematic diagram.As shown in Figure 12, the buck charging module in the third described wireless charging circuit
16 can only include a buck charging submodule, such as 161 etc. shown in Figure 12.
Alternatively, as shown in figure 13, it is second of the third wireless charging circuit provided in the embodiment of the present invention
Possible concrete structure schematic diagram.As shown in Figure 13, the institute in the third wireless charging circuit described in the embodiment of the present invention
Stating buck charging module 16 may include M buck charging submodule, such as 161~16M shown in Figure 13, wherein, M is
Positive integer more than or equal to 2, the M and N may be configured as identical or different.
, can be by following manner by the second target voltage tune it should be noted that buck charging submodule
The charging voltage, second target current is adjusted to the charging current：
According to default adjustment multiple, second target voltage is adjusted to the charging voltage, by second mesh
Mark electric current is adjusted to the charging current；Alternatively,
Under the control of the control module 13, second target voltage is adjusted to the charging voltage, by described in
Second target current is adjusted to the charging current.
Further, it is necessary to which explanation, when the charging stage is non-constant-current phase, the control module 13 is except controllable
The buck modular converter 14 is made, it is exported outside the second target voltage and the second target current, can not also be to described
Buck modular converter 14 carries out any control, and directly controls the buck charging module 16, makes its output charging electricity
Pressure and charging current, at this time, the body adjustment multiple of the buck modular converter 14 can be preset, and the present invention is implemented
Example is not limited in any way this.
Further, the control module 13, can also be specifically used for being not more than in the charging voltage of the battery to be charged
The minimum voltage threshold value, or during not less than the ceiling voltage threshold value, the charging stage for determining the battery to be charged be
Non- constant-current phase.
Wherein, the non-constant-current phase may include charging stage, tricke phase stage and constant-voltage phase etc., not go to live in the household of one's in-laws on getting married to this
State.
Further, as shown in figure 14, it is the first of the 4th kind of wireless charging circuit provided in the embodiment of the present invention
The possible concrete structure schematic diagram of kind.Specifically, as shown in Figure 14, the 4th kind of wireless charging circuit may also include switching molding
Block 17, wherein：
, there is excess temperature, overvoltage, under-voltage or over-current state available in the wireless charging circuit in the switch module 17
When, disconnect the wireless charging circuit.
It should be noted that usually can be by setting corresponding temperature sampler, voltage collector or current collector
Either electric current and excess temperature, overvoltage, under-voltage or overcurrent can occur Deng the temperature that gathers in the wireless charging circuit, voltage
When state, the wireless charging circuit is disconnected.
Specifically, the wireless charging circuit is disconnected, it may include：
Disconnect being electrically connected between the electric energy receiving module 11 and the rectification module 12；Alternatively,
Disconnect being electrically connected between the rectification module 12 and the buck modular converter 14；Alternatively,
Disconnect being electrically connected between the buck modular converter 14 and the charge pump charging module 15；Or；
Disconnect being electrically connected between the charge pump charging module 15 and the battery to be charged；Alternatively,
Disconnect being electrically connected between the buck modular converter 14 and the buck charging module 16；Alternatively,
Disconnect being electrically connected between the buck charging module 16 and the battery to be charged.
Alternatively, the switch module 17 is except may be provided at the electric energy receiving module in the wireless charging circuit
Between 11 and the rectification module 12, as shown in figure 14；The switch module 17 can also be provided at the rectification module 12 and institute
Between stating buck modular converter 14, as shown in figure 15, it is the 4th kind of wireless charging circuit provided in the embodiment of the present invention
Second of possible concrete structure schematic diagram.Certainly, the switch module 17 can also be provided at the buck modular converter
Between 14 and the charge pump charging module 15, as shown in figure 16, it is the 4th kind of wireless charging described in the embodiment of the present invention
The third possible concrete structure schematic diagram of circuit, the switch module 17, which is only capable of disconnecting, at this time uses charge pump charging mould
The wireless charging circuit that block 15 charges；The switch module 17 can also be provided at the buck modular converter 14 with it is described
Between buck charging module 16, as shown in figure 17, it is the 4th kind of wireless charging circuit described in the embodiment of the present invention
4th kind of possible concrete structure schematic diagram, at this time, the switch module 17 be only capable of disconnect using buck charging module 16 into
The wireless charging circuit of row charging.
Alternatively, the switch module 17 can also be provided at the charge pump charging module 15 and the battery to be charged it
Between or the buck charging module 16 and the battery to be charged between, the embodiment of the present invention is not limited in any way this.
It should be noted that the wireless charging circuit described in the embodiment of the present invention, is applicable to existing, any wireless
Rechargeable standard, the framework adaptation based on standards such as PMA, WPC, AirFuel belong to protection scope of the present invention.
Correspondingly, a kind of terminal device that the embodiment of the present invention also provides, as shown in figure 18, it is in the embodiment of the present invention
The structure diagram of the terminal device.Specifically, as shown in Figure 18, the terminal device may include battery 181 to be charged
And the wireless charging circuit 182 described in the embodiment of the present invention.
Wherein, the output terminal of the wireless charging circuit 182 can be electrically connected with the battery 181 to be charged, to this not
Repeat.
Further, a kind of wireless charging system is additionally provided in the embodiment of the present invention, as shown in figure 19, it is the present invention
The structure diagram of wireless charging system described in embodiment.Specifically, it appears from figure 19 that the wireless charging system can wrap
Include the terminal device 192 described in power supply adaptor 191 and the embodiment of the present invention.
It should be noted that the power supply adaptor 191 in addition to it can be wireless power adapter, can also be wireless charging
It is electric precious, as long as possessing corresponding electric energy transmitting coil, and line can be received to the electric energy of terminal device 192 based on electric energy transmitting coil
Circle sends electric energy, and the embodiment of the present invention does not repeat this.
Alternatively, the modules described in the embodiment of the present invention can be independently arranged, and may alternatively be integrated within printed circuit board (PCB)
Or in chip, this is not repeated.
The embodiment of the present invention one provides a kind of wireless charging circuit, terminal device and wireless charging system, it may include
Electric energy receiving module, rectification module, control module and buck modular converter, wherein：The electric energy receiving module, for connecing
Receive the alternating current that the electric energy transmitting module of power supply adaptor is launched；The rectification module, for the alternating current to be converted to
Direct current；The control module, for gathering the charging voltage and charging current of battery to be charged, and according to the direct current
Voltage and the charging voltage determine the conduction mode of the buck modular converter；The buck modular converter, is used
In based on the conduction mode, the voltage of the direct current is adjusted to the charging voltage, by the electric current tune of the direct current
The charging current；Wherein, the buck modular converter turns including one or more buck parallel with one another
Change submodule；For any buck transform subblock, the buck transform subblock is used to receive the control mould
During the first control signal that block is sent, using the first conduction mode；Receiving the second control letter of the control module transmission
Number when, using the second conduction mode；First conduction mode is the first path for turning on the buck modular converter in turn
And alternate path, second conduction mode are to turn on the third path of the buck modular converter and first logical in turn
Road；First path can adjust the voltage of the direct current to half, and the alternate path can be by the direct current
Voltage adjust to zero, the third path can remain unchanged the voltage of the direct current.Compared with the prior art, at this
In inventive embodiments, the main charge and discharge electric device of the buck modular converter can be capacitance, it is thus possible to increase wireless charging
The transfer efficiency of circuit, and then lift the charge efficiency of wireless charging circuit；And the buck modular converter can be by high pressure
Low pressure is converted to, reduces the electric current for the front stage circuits for flowing through the buck modular converter, not only improves wireless charging electricity
The charge efficiency on road, it is ensured that the security of wireless charging circuit.
Embodiment two：
Based on the inventive concept identical with the embodiment of the present invention one, the embodiment of the present invention two provides a kind of wireless charging side
Method, as shown in Figure 20, it is the flow diagram of the wireless charging method provided in the embodiment of the present invention two.Specifically, by scheming
20 understand that the wireless charging method may include following steps：
Step 2001：Receive the alternating current that the electric energy transmitting module of power supply adaptor is launched；
Step 2002：The alternating current is converted into direct current；
Step 2003：The charging voltage and charging current of battery to be charged are gathered, and according to the voltage of the direct current
And the charging voltage determines the conduction mode of the buck modular converter；
Step 2004：Buck modular converter is based on the conduction mode, and the voltage of the direct current is adjusted to described
Charging voltage, the electric current of the direct current is adjusted to the charging current；
Wherein, the buck modular converter includes one or more buck transform subblock parallel with one another；
For any buck transform subblock, the buck transform subblock is used in receive that the control module sends the
During one control signal, using the first conduction mode；When receiving the second control signal that the control module is sent, using the
Two conduction modes；First conduction mode is to turn on the first path of the buck modular converter and second logical in turn
Road, second conduction mode are the third path and the first path for turning on the buck modular converter in turn；Described
One path can adjust the voltage of the direct current to half, and the alternate path can adjust the voltage of the direct current
To zero, the third path can remain unchanged the voltage of the direct current.
That is, an embodiment of the present invention provides a kind of wireless charging method, the electric energy hair of power supply adaptor is being received
Penetrate after the alternating current that module is launched, the alternating current can be converted to direct current, then, filling for battery to be charged can be gathered
Piezoelectric voltage and charging current, and the buck conversion can be determined according to the voltage and the charging voltage of the direct current
The conduction mode of module, finally, buck modular converter are based on the conduction mode, and the voltage of the direct current is adjusted to institute
Charging voltage is stated, the electric current of the direct current is adjusted to the charging current；Wherein, the buck modular converter includes one
A or parallel with one another two or more buck transform subblock；For any buck transform subblock, the buck turns
Submodule is changed to be used for when receiving the first control signal that the control module is sent, using the first conduction mode；Receiving
To the control module send second control signal when, using the second conduction mode；First conduction mode is wheel conductance
Lead to the first path and alternate path of the buck modular converter, second conduction mode is to turn on the decompression in turn
The third path of formula modular converter and the first path；First path can adjust the voltage of the direct current to one
Half, the alternate path can adjust the voltage of the direct current to zero, and the third path can be by the direct current
Voltage remains unchanged.Compared with the prior art, in embodiments of the present invention, the charge and discharge electric device of the buck modular converter can
For capacitance, it is thus possible to increase the transfer efficiency of wireless charging circuit, and then lift the charge efficiency of wireless charging circuit；And
High pressure can be converted to low pressure by the buck modular converter, reduce the front stage circuits for flowing through the buck modular converter
Electric current, not only improve the charge efficiency of wireless charging circuit, it is ensured that the security of wireless charging circuit.
Specifically, leading for the buck modular converter is determined according to the voltage of the direct current and the charging voltage
Logical mode, it may include：
If it is determined that the voltage of the direct current is not less than twice of the charging voltage, it is determined that the buck modulus of conversion
The conduction mode of block is the first conduction mode；If it is determined that the voltage of the direct current is less than twice of the charging voltage, then really
The conduction mode of the fixed buck modular converter is the second conduction mode.
Alternatively, buck modular converter is based on the conduction path, and the voltage of the direct current is adjusted to described and is filled
Piezoelectric voltage, the electric current of the direct current is adjusted to the charging current, it may include：
When the charging stage of the definite battery to be charged is constant-current phase, control charge pump charging module powers on；
The buck modular converter is based on the conduction path, and the voltage of the direct current is adjusted to first object electricity
Pressure, the electric current of the direct current is adjusted to first object electric current；
The charge pump charging module adjusts the first object voltage to the charging voltage, by the first object
Electric current is adjusted to the charging current；
Wherein, the charge pump charging module may include one or more charge pump charging submodule parallel with one another
Block.
Alternatively, buck modular converter is based on the conduction path, and the voltage of the direct current is adjusted to described and is filled
Piezoelectric voltage, the electric current of the direct current is adjusted to the charging current, may also include：
When the charging stage of the definite battery to be charged is non-constant-current phase, control buck charging module powers on；
The buck modular converter is based on the conduction path, and the voltage of the direct current is adjusted to the second target electricity
Pressure, the electric current of the direct current is adjusted to the second target current；
The buck charging module adjusts second target voltage to the charging voltage, by second target
Electric current is adjusted to the charging current；
Wherein, the buck charging module may include one or more buck charging submodule parallel with one another
Block.
Further, the wireless charging method may also include：
When excess temperature, overvoltage, under-voltage or over-current state occurs in the wireless charging circuit, the wireless charging electricity is disconnected
Road.
After the alternating current that the electric energy transmitting module for receiving power supply adaptor is launched, the alternating current can be converted to
Direct current, then, can gather the charging voltage and charging current of battery to be charged, and can according to the voltage of the direct current with
And the charging voltage determines the conduction mode of the buck modular converter, finally, buck modular converter is based on described lead
Logical mode, the voltage of the direct current is adjusted to the charging voltage, the electric current of the direct current is adjusted to the charging
Electric current；Wherein, the buck modular converter includes one or more buck transform subblock parallel with one another；For
Any buck transform subblock, the buck transform subblock are used to receive the first control of the control module transmission
During signal processed, using the first conduction mode；When receiving the second control signal that the control module is sent, led using second
Logical mode；First conduction mode is to turn on the first path and alternate path of the buck modular converter, institute in turn
It is the third path and the first path for turning on the buck modular converter in turn to state the second conduction mode；First path
The voltage of the direct current can be adjusted to half, the alternate path can adjust the voltage of the direct current to zero,
The third path can remain unchanged the voltage of the direct current.Compared with the prior art, in embodiments of the present invention, institute
The charge and discharge electric device for stating buck modular converter can be capacitance, it is thus possible to increase the transfer efficiency of wireless charging circuit, and then
Lift the charge efficiency of wireless charging circuit；And high pressure can be converted to low pressure by the buck modular converter, reduce stream
The electric current of the front stage circuits of the buck modular converter is crossed, not only improves the charge efficiency of wireless charging circuit, it is ensured that
The security of wireless charging circuit.
Embodiment three：
The embodiment of the present invention three provides a kind of computer equipment, and as shown in figure 21, it is described in the embodiment of the present invention
Computer equipment structure diagram.The computer equipment is specifically as follows desktop computer, portable computer, intelligent hand
Machine, tablet computer, personal digital assistant (Personal Digital Assistant, PDA) etc..Specifically, the present invention is implemented
Computer equipment described in example can include central processing unit (Center Processing Unit, CPU) 2101, memory
2102nd, input equipment 2103 and output equipment 2104 etc., input equipment 2103 can include keyboard, mouse, touch-screen etc., defeated
Display device can be included by going out equipment 2104, such as liquid crystal display (Liquid Crystal Display, LCD), cathode-ray
Manage (Cathode Ray Tube, CRT) etc..
Memory 602 can include read-only storage (ROM) and random access memory (RAM), and to central processing unit
The programmed instruction and data stored in 2101 offer memories 2102.In embodiments of the present invention, memory 2102 can be used for
Store the program of wireless charging method.
By calling the programmed instruction that memory 2102 stores, central processing unit 2101 can be used for pressing central processing unit 2101
Performed according to the programmed instruction of acquisition：Receive the alternating current that the electric energy transmitting module of power supply adaptor is launched；By the alternating current
Be converted to direct current；Gather the charging voltage and charging current of battery to be charged, and according to the voltage of the direct current and
The charging voltage determines the conduction mode of the buck modular converter；Buck modular converter is based on the conduction mode,
The voltage of the direct current is adjusted to the charging voltage, the electric current of the direct current is adjusted to the charging current；Its
In, the buck modular converter includes one or more buck transform subblock parallel with one another；For any drop
Pressure type transform subblock, the buck transform subblock are used to receive the first control signal of the control module transmission
When, using the first conduction mode；When receiving the second control signal that the control module is sent, using the second conducting side
Formula；First conduction mode is to turn on the first path and alternate path of the buck modular converter in turn, described the
Two conduction modes are the third path and the first path for turning on the buck modular converter in turn；First path can
The voltage of the direct current is adjusted to half, the alternate path can adjust the voltage of the direct current to zero, described
Third path can remain unchanged the voltage of the direct current.
Example IV：
The embodiment of the present invention four provides a kind of computer-readable storage medium, for saving as used in above computer equipment
Computer program instructions, it includes the program for performing above-mentioned image processing method.
The computer-readable storage medium can be any usable medium or data storage device that computer can access, bag
Include but be not limited to magnetic storage (such as floppy disk, hard disk, tape, magneto-optic disk (MO) etc.), optical memory (such as CD, DVD,
BD, HVD etc.) and semiconductor memory (such as it is ROM, EPROM, EEPROM, nonvolatile memory (NAND FLASH), solid
State hard disk (SSD)) etc..
It will be understood by those skilled in the art that the embodiment of the present invention can be provided as method, apparatus (equipment) or computer journey
Sequence product.Therefore, in terms of the present invention can use complete hardware embodiment, complete software embodiment or combine software and hardware
The form of embodiment.Moreover, the present invention can use the calculating for wherein including computer usable program code in one or more
The computer program that machine usable storage medium is implemented on (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow chart of device (equipment) and computer program product
And/or block diagram describes.It should be understood that each flow in flowchart and/or the block diagram can be realized by computer program instructions
And/or the flow in square frame and flowchart and/or the block diagram and/or the combination of square frame.These computer programs can be provided to refer to
The processors of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is made to produce
One machine so that the instruction performed by computer or the processor of other programmable data processing devices, which produces, to be used for realization
The device for the function of being specified in one flow of flow chart or multiple flows and/or one square frame of block diagram or multiple square frames.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided and is used for realization in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a square frame or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make these embodiments other change and modification.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and scope.In this way, if these modifications and changes of the present invention belongs to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these modification and variations.
Claims (15)
1. a kind of wireless charging circuit, it is characterised in that including electric energy receiving module, rectification module, control module and decompression
Formula modular converter, wherein：
The electric energy receiving module, the alternating current that the electric energy transmitting module for receiving power supply adaptor is launched；
The rectification module, for the alternating current to be converted to direct current；
The control module, for gathering the charging voltage and charging current of battery to be charged, and according to the direct current
Voltage and the charging voltage determine the conduction mode of the buck modular converter；
The buck modular converter, for based on the conduction mode, the voltage of the direct current to be adjusted to the charging
Voltage, the electric current of the direct current is adjusted to the charging current；
Wherein, the buck modular converter includes one or more buck transform subblock parallel with one another；For
Any buck transform subblock, the buck transform subblock are used to receive the first control of the control module transmission
During signal processed, using the first conduction mode；When receiving the second control signal that the control module is sent, led using second
Logical mode；First conduction mode is to turn on the first path and alternate path of the buck modular converter, institute in turn
It is the third path and the first path for turning on the buck modular converter in turn to state the second conduction mode；First path
The voltage of the direct current can be adjusted to half, the alternate path can adjust the voltage of the direct current to zero,
The third path can remain unchanged the voltage of the direct current.
2. wireless charging circuit as claimed in claim 1, it is characterised in that
The control module, specifically for if it is determined that the voltage of the direct current is not less than twice of the charging voltage, then really
The conduction mode of the fixed buck modular converter is the first conduction mode；If it is determined that the voltage of the direct current is less than described fill
Twice of piezoelectric voltage, it is determined that the conduction mode of the buck modular converter is the second conduction mode.
3. wireless charging circuit as claimed in claim 1, it is characterised in that the buck transform subblock is opened including first
Pass, second switch, the 3rd switch, the 4th switch, the first capacitance, inductance and the second capacitance, wherein：
The first switch, the second switch, the 3rd switch and the 4th switch are sequentially connected in series；
One end of first capacitance is connected with the input terminal of the output terminal of the first switch and the second switch, another
The input terminal with the output terminal of the described 3rd switch and the 4th switch is held to be connected；
One end of the inductance is connected with the output terminal of the second switch with the input terminal of the described 3rd switch, the other end and institute
The one end for stating the second capacitance is connected；
The output terminal of the other end of second capacitance and the 4th switch is as public negative terminal.
4. wireless charging circuit as claimed in claim 1, it is characterised in that the wireless charging circuit further includes charge pump and fills
Electric module, wherein：
The control module, is additionally operable to, when the charging stage of the definite battery to be charged is constant-current phase, control the electricity
Lotus pump charging module powers on；
The buck modular converter, specifically for based on the conduction mode, the voltage of the direct current is adjusted to first
Target voltage, the electric current of the direct current is adjusted to first object electric current；
The charge pump charging module, for adjusting the first object voltage to the charging voltage, by first mesh
Mark electric current is adjusted to the charging current；
Wherein, the charge pump charging module includes one or more charge pump charging submodule parallel with one another.
5. wireless charging circuit as claimed in claim 4, it is characterised in that
The control module, specifically for being more than default minimum voltage threshold value in the charging voltage of the battery to be charged, and
During less than default ceiling voltage threshold value, the charging stage for determining the battery to be charged is constant-current phase.
6. wireless charging circuit as claimed in claim 1, it is characterised in that the wireless charging circuit further includes buck and fills
Electric module, wherein：
The control module, is additionally operable to when the charging stage of the definite battery to be charged is non-constant-current phase, described in control
Buck charging module powers on；
The buck modular converter, specifically for based on the conduction mode, the voltage of the direct current is adjusted to second
Target voltage, the electric current of the direct current is adjusted to the second target current；
The buck charging module, for adjusting second target voltage to the charging voltage, by second mesh
Mark electric current is adjusted to the charging current；
Wherein, the buck charging module includes one or more buck charging submodule parallel with one another.
7. wireless charging circuit as claimed in claim 6, it is characterised in that
The control module, is not more than the minimum voltage threshold value also particularly useful for the charging voltage in the battery to be charged,
Or during not less than the ceiling voltage threshold value, the charging stage for determining the battery to be charged is non-constant-current phase.
8. such as claim 1~7 any one of them wireless charging circuit, it is characterised in that the wireless charging circuit also wraps
Switch module is included, wherein：
The switch module, for when excess temperature, overvoltage, under-voltage or over-current state occurs in the wireless charging circuit, disconnecting
The wireless charging circuit.
9. a kind of terminal device, it is characterised in that wireless including battery to be charged and claim 1~8 any one of them
Charging circuit.
10. a kind of wireless charging system, it is characterised in that set including the terminal described in power supply adaptor and claim 9
It is standby.
A kind of 11. wireless charging method, it is characterised in that including：
Receive the alternating current that the electric energy transmitting module of power supply adaptor is launched；
The alternating current is converted into direct current；
Gather the charging voltage and charging current of battery to be charged, and the voltage according to the direct current and the charging electricity
Pressure determines the conduction mode of the buck modular converter；
Buck modular converter is based on the conduction mode, and the voltage of the direct current is adjusted to the charging voltage, by institute
The electric current for stating direct current is adjusted to the charging current；
Wherein, the buck modular converter includes one or more buck transform subblock parallel with one another；For
Any buck transform subblock, the buck transform subblock are used to receive the first control of the control module transmission
During signal processed, using the first conduction mode；When receiving the second control signal that the control module is sent, led using second
Logical mode；First conduction mode is to turn on the first path and alternate path of the buck modular converter, institute in turn
It is the third path and the first path for turning on the buck modular converter in turn to state the second conduction mode；First path
The voltage of the direct current can be adjusted to half, the alternate path can adjust the voltage of the direct current to zero,
The third path can remain unchanged the voltage of the direct current.
12. wireless charging method as claimed in claim 11, it is characterised in that according to the voltage of the direct current and described
Charging voltage determines the conduction mode of the buck modular converter, including：
If it is determined that the voltage of the direct current is not less than twice of the charging voltage, it is determined that the buck modular converter
Conduction mode is the first conduction mode；If it is determined that the voltage of the direct current is less than twice of the charging voltage, it is determined that institute
The conduction mode for stating buck modular converter is the second conduction mode.
13. wireless charging method as claimed in claim 11, it is characterised in that it is logical that buck modular converter is based on the conducting
Road, the voltage of the direct current is adjusted to the charging voltage, and the electric current of the direct current is adjusted to the charging current,
Including：
When the charging stage of the definite battery to be charged is constant-current phase, control charge pump charging module powers on；
The buck modular converter is based on the conduction path, and the voltage of the direct current is adjusted to first object voltage,
The electric current of the direct current is adjusted to first object electric current；
The charge pump charging module adjusts the first object voltage to the charging voltage, by the first object electric current
Adjust to the charging current；
Wherein, the charge pump charging module includes one or more charge pump charging submodule parallel with one another.
14. wireless charging method as claimed in claim 11, it is characterised in that it is logical that buck modular converter is based on the conducting
Road, the voltage of the direct current is adjusted to the charging voltage, and the electric current of the direct current is adjusted to the charging current,
Further include：
When the charging stage of the definite battery to be charged is non-constant-current phase, control buck charging module powers on；
The buck modular converter is based on the conduction path, and the voltage of the direct current is adjusted to the second target voltage,
The electric current of the direct current is adjusted to the second target current；
The buck charging module adjusts second target voltage to the charging voltage, by second target current
Adjust to the charging current；
Wherein, the buck charging module includes one or more buck charging submodule parallel with one another.
15. such as claim 11~14 any one of them wireless charging method, it is characterised in that the wireless charging method is also
Including：
When excess temperature, overvoltage, under-voltage or over-current state occurs in the wireless charging circuit, the wireless charging circuit is disconnected.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711251046.0A CN107947305A (en) | 2017-12-01 | 2017-12-01 | A kind of wireless charging circuit, system, method and terminal device |
| PCT/CN2018/117828 WO2019105361A1 (en) | 2017-12-01 | 2018-11-28 | Wireless charging circuit, system and method, and terminal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711251046.0A CN107947305A (en) | 2017-12-01 | 2017-12-01 | A kind of wireless charging circuit, system, method and terminal device |
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| Publication Number | Publication Date |
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| CN107947305A true CN107947305A (en) | 2018-04-20 |
Family
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|---|---|---|---|
| CN201711251046.0A Pending CN107947305A (en) | 2017-12-01 | 2017-12-01 | A kind of wireless charging circuit, system, method and terminal device |
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| WO (1) | WO2019105361A1 (en) |
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| CN108718103A (en) * | 2018-06-15 | 2018-10-30 | 珠海市魅族科技有限公司 | A kind of charging circuit, electronic equipment and wireless charging method |
| CN109149689A (en) * | 2018-08-27 | 2019-01-04 | 出门问问信息科技有限公司 | A kind of wireless charging method and device |
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| CN110970957A (en) * | 2018-09-30 | 2020-04-07 | Oppo广东移动通信有限公司 | Wireless charging method, electronic equipment, wireless charging device and wireless charging system |
| CN111279574A (en) * | 2018-04-25 | 2020-06-12 | Oppo广东移动通信有限公司 | Terminal device and charging control method |
| CN111684680A (en) * | 2018-06-22 | 2020-09-18 | Oppo广东移动通信有限公司 | Charging device, mobile terminal and charging control method |
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| RU2733214C1 (en) * | 2018-09-28 | 2020-09-30 | Бейдзин Сяоми Мобайл Софтвэр Ко., Лтд. | Wireless charging receiver, charging system and terminal |
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| EP3846275A4 (en) * | 2018-09-30 | 2021-10-20 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Wireless charging method, electronic device, wireless charging apparatus and wireless charging system |
| US11824396B2 (en) | 2018-09-30 | 2023-11-21 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Wireless charging method, electronic device and wireless charging apparatus |
| WO2021218664A1 (en) * | 2020-04-28 | 2021-11-04 | 深圳市万普拉斯科技有限公司 | Wireless charging circuit and method, and mobile terminal |
| CN112104243A (en) * | 2020-11-05 | 2020-12-18 | 广东希荻微电子有限公司 | Step-down rectification circuit, wireless charging receiving chip and wireless charging receiver |
| US11557966B1 (en) | 2020-11-05 | 2023-01-17 | Halo Microelectronics Co., Ltd. | Step-down rectifier circuit, wireless charging receiver chip, and wireless charging receiver |
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|---|---|
| WO2019105361A1 (en) | 2019-06-06 |
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Application publication date: 20180420 |