CN108233454A - A kind of wireless charging circuit, system, method and electronic equipment - Google Patents
A kind of wireless charging circuit, system, method and electronic equipment Download PDFInfo
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- CN108233454A CN108233454A CN201710643207.4A CN201710643207A CN108233454A CN 108233454 A CN108233454 A CN 108233454A CN 201710643207 A CN201710643207 A CN 201710643207A CN 108233454 A CN108233454 A CN 108233454A
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Classifications
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- H02J7/025—
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
-
- H02J7/0077—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of wireless charging circuit, system, method and electronic equipments, it may include electric energy receiving module, rectification module, control module and charge pump charging module, wherein：Electric energy receiving module, the alternating current that the electric energy transmitting module for receiving wireless adapter is emitted；Rectification module, for the alternating current to be converted to direct current；Control module, in constant-current phase, generation first control signal；Direct current after decompression and up-flow for when receiving the first control signal, the direct current being depressured and being flowed up, and is sent to the battery to be charged by charge pump charging module.Compared with the prior art, first, do not include buck modular converter, second, in constant-current phase, using the charge pump charging module without inductance element, third, in constant-current phase, the front stage circuits electric current of charge pump charging module is small, coupling loss is low, solves the problems, such as that charge efficiency of the prior art is relatively low and safety is relatively low.
Description
Technical field
The present invention relates to charging technique field more particularly to a kind of wireless charging circuit, system, method and electronic equipments.
Background technology
It is stronger and stronger with electronic functionalities, the charging technique of electronic equipment also constantly developed and into
Step, in order to promote 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
Line charging circuit usually requires to include electric energy receiving coil, decompression transducer (Buck converters) and buck charging circuit
(Buck Charger).Firstly, since including there are coil losses and magnetic core in Buck converters and Buck Charger
The outputting inductance of loss, this may can so that the decompression transfer efficiency of entire wireless charging circuit is relatively low, consequently, it is possible to shadow
Ring the charge efficiency of entire charging process；Secondly, inventor has found that Buck converters or Buck Charger are in input voltage
When difference is larger between output voltage, decompression transfer efficiency can be also further reduced, consequently, it is possible to further reducing entire
The charge efficiency of charging process；Further more, when carrying out wireless charging using the circuit of Buck installed in series Buck Charger,
A large amount of electricity conversion is also had as thermal energy, thus can also influence the safety of wireless charging.
That is, there are charge efficiency is relatively low and the problem of charging security is relatively low for existing wireless charging circuit.
Invention content
An embodiment of the present invention provides a kind of wireless charging circuit, system, method and electronic equipments, existing to solve
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 charge pump charging module, wherein：
The electric energy receiving module, the alternating current that the electric energy transmitting module for receiving wireless adapter is emitted, and will
The alternating current is sent to the rectification module；
The direct current for the alternating current to be converted to direct current, and is sent to the electricity by the rectification module
Lotus pumps charging module；
The control module, for acquiring the charging voltage of battery to be charged, and according to determining the charging voltage
The charging stage of battery to be charged and, however, it is determined that the charging stage of the battery to be charged be constant-current phase, then generate first
Signal is controlled, and the first control signal is sent to the charge pump charging module；
The charge pump charging module, for when receiving the first control signal, being dropped to the direct current
Pressure and up-flow, and the direct current after decompression and up-flow is sent to the battery to be charged.
Specifically, the control module is more than preset minimum specifically for the charging voltage in the battery to be charged
Voltage threshold, and less than preset ceiling voltage threshold value when, determine the battery to be charged charging stage be constant-current phase.
Optionally, the charge pump charging module includes one or more charging paths in parallel, each charging
Branch includes the charge pump charging submodule of one or more series connection, for any charge pump charging submodule, the electricity
Lotus pump charging submodule includes first switch, second switch, third switch, the 4th switch, the first capacitance and the second capacitance,
In：
The input terminal of the first switch is connected with the output terminal of the rectification module, alternatively, being filled with previous stage charge pump
The output terminal of electronic module is connected, and input terminal that output terminal is switched with the third, the first end of first capacitance are connected；
The input terminal of the second switch and the second end of first capacitance and the input terminal phase of the 4th switch
Even, output terminal is connected with the output terminal that the first end of second capacitance and the third switch；
The output terminal of 4th switch is connected, and be used as public negative terminal with the second end of second capacitance；
The input terminal of the first switch as the charge pump charging submodule input terminal, the second switch it is defeated
The first end of outlet, the output terminal of third switch or second capacitance is defeated as charge pump charging submodule
Outlet.
Further, the wireless charging circuit further includes wireless communication module, wherein：
The control module is additionally operable to according to the charging voltage or the charging voltage and collected described treats
The charging current generation charge control information of rechargeable battery, and the charge control information is sent to the radio communication mold
Block；
The charge control information is sent to described wireless by the wireless communication module for mode by radio communication
Adapter, with as the alternating current transmitted by the wireless adapter adjustment electric energy transmitting module so that the rectification module
The direct current of output is：
Wherein, the Ua_outRepresent the voltage of the direct current of the rectification module output；The Ia_outRepresent the rectification
The electric current of the direct current of module output；The M is positive integer, represents the charge pump connected in each charging paths charging
The number of module；The UbatteryRepresent the charging voltage of the battery to be charged；The UlRepresent the charge pump charging module
And the loss pressure drop of circuit；The IbatteryRepresent the charging current of the battery to be charged.
Optionally, the control module is additionally operable to acquire the voltage of the direct current of the rectification module output, and by described in
The voltage of direct current be sent to the wireless communication module and, however, it is determined that the voltage of the direct current not less than setting electricity
Press threshold value, it is determined that the electric energy receiving module is in effective chargeable range with the electric energy transmitting module；
The wireless communication module is additionally operable to the DC voltage being sent to the wireless adapter, so that institute
State the exchange that wireless adapter is emitted according to the electric energy transmitting module of the voltage of the direct current adjustment wireless adapter
Electricity.
Further, the wireless charging circuit further includes buck charging module, wherein：
The control module is additionally operable to if it is determined that the charging stage of the battery to be charged is non-constant-current phase, then generate
Second control signal, and the second control signal is sent to the buck charging module；
The buck charging module, for when receiving the second control signal, by the voltage of the direct current
It adjusts to the charging voltage of the battery to be charged, and the electric current of the direct current is adjusted to the charging of the battery to be charged
Electric current.
Specifically, the control module, also particularly useful for the charging voltage in the battery to be charged 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.
Optionally, the buck charging module includes one or more buck charging submodule in parallel；Needle
Charge to any buck submodule, buck charging submodule include the 5th switch, the 6th switch, the first inductance and
Third capacitance, wherein：
The input terminal of 5th switch is connected with the output terminal of the rectification module, output terminal and the described 6th switch
The first end of input terminal and first inductance connects；
The output terminal of 6th switch is connected, and be used as public negative terminal with the second end of the third capacitance；
The second end of first inductance is connected with the first end of the third capacitance；
Input terminal of the input terminal of the first switch as buck charging submodule, the of first inductance
Output terminal of the first end of two ends and the third capacitance as buck charging submodule.
Further, the wireless charging circuit further includes wireless communication module, wherein：
The control module, is additionally operable to acquire the voltage of the direct current of the rectification module output, and by the direct current
Voltage be sent to the wireless communication module and, however, it is determined that the voltage of the direct current not less than setting voltage threshold,
Then determine that the electric energy receiving module is in effective chargeable range with the electric energy transmitting module；
The wireless communication module is additionally operable to the DC voltage being sent to the wireless adapter, so that institute
State the exchange that wireless adapter is emitted according to the electric energy transmitting module of the voltage of the direct current adjustment wireless adapter
Electricity.
Correspondingly, the embodiment of the present invention additionally provides a kind of electronic equipment, including electronic equipment ontology, mounted on the electricity
The wireless charging circuit described in battery to be charged and the embodiment of the present invention in sub- equipment.
Further more, the embodiment of the present invention additionally provides a kind of wireless charging system, it is real including wireless adapter and the present invention
The electronic equipment described in example is applied, the wireless adapter is used to charge to the electronic equipment.
In addition, 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 wireless adapter is emitted；
The alternating current is converted into direct current；
The charging voltage of battery to be charged is acquired, and the charging rank of the battery to be charged is determined according to the charging voltage
Section and, however, it is determined that the charging stage of the battery to be charged be constant-current phase, then generate first control signal；
Charge pump charging module is depressured and is flowed up when receiving the first control signal, to the direct current,
And the direct current after decompression and up-flow is sent to the battery to be charged.
Further, however, it is determined that the charging stage of the battery to be charged is non-constant-current phase, then generates the second control letter
Number；
Buck charging module adjusts the voltage of the direct current to described when receiving the second control signal
The charging voltage of battery to be charged, and the electric current of the direct current is adjusted to the charging current of the battery to be charged.
The present invention has the beneficial effect that：
An embodiment of the present invention provides a kind of wireless charging circuit, system, method and electronic equipments, it may include electric energy receives
Module, rectification module, control module and charge pump charging module, wherein：The electric energy receiving module, it is wireless suitable for receiving
The alternating current that the electric energy transmitting module of orchestration is emitted, and the alternating current is sent to the rectification module；The rectification mould
The direct current for the alternating current to be converted to direct current, and is sent to the charge pump charging module by block；The control
Molding block for acquiring the charging voltage of battery to be charged, and determines filling for the battery to be charged according to the charging voltage
The electric stage and, however, it is determined that the charging stage of the battery to be charged is constant-current phase, then generates first control signal, and will
The first control signal is sent to the charge pump charging module；The charge pump charging module, for receive it is described
During first control signal, the direct current is depressured and is flowed up, and the direct current after decompression and up-flow is sent to institute
State battery to be charged.Compared with the prior art, in embodiments of the present invention, first, drop is not included in the wireless charging circuit
Pressure type modular converter, it is thus possible to promote the decompression transfer efficiency, charge efficiency and charging safety of entire wireless charging circuit
Property；Second, when the charging stage is constant-current phase, used charging module is charge pump charging module, internal charge and discharge
Electric device is capacitance rather than inductance, and, the voltage conversion efficiency of the charge pump charging module will not be because of its input voltage and defeated
Go out voltage difference reduces transfer efficiency very much greatly, thus not only ensure that the decompression transfer efficiency of entire wireless charging circuit, also
Avoid the fever phenomenon of wireless charging circuit；Third, when the charging stage is constant-current phase, the charge pump charging module makes
With can not only effectively reduce the electric current for flowing through its front stage circuits, moreover it is possible to reduce between electric energy receiving module and electric energy transmitting module
Coupling loss, thus can also further promote the charge efficiency and charging security of the wireless charging circuit.
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, the accompanying drawings in the following description is only some embodiments of the present invention, for this
For the those of ordinary skill in field, without creative efforts, other are 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 concrete structure schematic diagram of the first wireless charging circuit provided in the embodiment of the present invention one；
Fig. 3 show the electrical block diagram of charge pump transform subblock provided in the embodiment of the present invention one；
Fig. 4 show another circuit structure signal of the charge pump transform subblock provided in the embodiment of the present invention one
Figure；
Fig. 5 show the electrical block diagram of second of wireless charging circuit provided in the embodiment of the present invention one；
Fig. 6 show the particular circuit configurations signal of the third wireless charging circuit provided in the embodiment of the present invention one
Figure；
Fig. 7 show the particular circuit configurations signal of the third wireless charging circuit provided in the embodiment of the present invention one
Figure；
Fig. 8 show the electrical block diagram of buck charging submodule provided in the embodiment of the present invention one；
Fig. 9 show the electrical block diagram of the 4th kind of wireless charging circuit provided in the embodiment of the present invention one；
Figure 10 show the structure diagram of the electronic equipment provided in the embodiment of the present invention one；
Figure 11 show the structure diagram of the wireless charging system provided in the embodiment of the present invention one；
Figure 12 show the flow diagram of the wireless charging method provided in the embodiment of the present invention two.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is made below in conjunction with attached drawing into
It is described in detail to one step, it is clear that described embodiment is only the implementation of part of the embodiment of the present invention rather than whole
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, shall fall within the protection scope of the present 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 circuits.Wherein, the wireless charging circuit can be generally disposed at accordingly
Terminal device in, such as be arranged in mobile phone, tablet computer, smartwatch and camera, for the terminal device with
When corresponding wireless adapter foundation is of coupled connections, the electric energy received from the wireless adapter is transferred to the terminal and is set
In standby battery to be charged, certainly, the wireless charging circuit can also be independently operated, and this is not repeated.As shown in Figure 1, its
Electrical block diagram for the first wireless charging circuit described in the embodiment of the present invention one.Specifically, as shown in Figure 1,
The first described wireless charging circuit may include that electric energy receiving module 11, rectification module 12, control module 13 and charge pump are filled
Electric module 14, wherein：
The electric energy receiving module 11, the alternating current that the electric energy transmitting module available for receiving wireless adapter is emitted,
And the alternating current is sent to the rectification module 12；
The direct current available for the alternating current is converted to direct current, and is sent to institute by the rectification module 12
State charge pump charging module 14；
The control module 13 is determined available for acquiring the charging voltage of battery to be charged, and according to the charging voltage
The charging stage of the battery to be charged and, however, it is determined that the charging stage of the battery to be charged be constant-current phase, then generate
First control signal, and the first control signal is sent to the charge pump charging module 14；
The charge pump charging module 14, available for when receiving the first control signal, to the direct current into
Row decompression and up-flow, and the direct current after decompression and up-flow is sent to the battery to be charged.
That is, in embodiments of the present invention, the wireless charging circuit may include electric energy receiving module, rectification mould
Block, control module and charge pump charging module, wherein：The electric energy receiving module, for receiving the electric energy of wireless adapter
The alternating current that transmitting module is emitted, and the alternating current is sent to the rectification module；The rectification module, for by institute
It states alternating current and is converted to direct current, and the direct current is sent to the charge pump charging module；The control module, is used for
Acquire the charging voltage of battery to be charged, and according to the charging voltage determine the battery to be charged charging stage and,
If it is determined that the charging stage of the battery to be charged is constant-current phase, then first control signal is generated, and described first is controlled
Signal is sent to the charge pump charging module；The charge pump charging module, for receiving the first control signal
When, the direct current is depressured and is flowed up, and the direct current after decompression and up-flow is sent to the battery to be charged.
Compared with the prior art, in embodiments of the present invention, first, buck modular converter is not included in the wireless charging circuit,
Decompression transfer efficiency, charge efficiency and the charging security of entire wireless charging circuit can thus be promoted；Second, it is charging
When stage is constant-current phase, used charging module is charge pump charging module, internal charge and discharge electric device for capacitance and
Non- inductance, and, the voltage conversion efficiency of the charge pump charging module will not follow its input voltage and output voltage to become
Change, thus not only ensure that the decompression transfer efficiency of entire wireless charging circuit, also avoid the fever phenomenon of wireless charging circuit；
Third, the charging stage be constant-current phase when, the use of the charge pump charging module can not only be reduced effectively flow through it before
The electric current of grade circuit, moreover it is possible to the coupling loss between electric energy receiving module and electric energy transmitting module is reduced, thus can also be further
Promote the charge efficiency and charging security of the wireless charging circuit.
It should be noted that at this point, since the charging stage is constant-current phase, thus the electric current in entire wireless charging circuit
It is larger, therefore, when high current flows through the charge pump charging module 14, since inductance being not present in charge pump charging module 14
Element, thus larger loss pressure drop would not occur, compared with the prior art in.No matter when buck is all used
The mode that charging module charges, can greatly promote charge efficiency and charging security, this is not repeated.
Specifically, the electric energy receiving module 11 generally can be corresponding electric energy receiving coil, the electric energy receiving coil
Can be the arbitrary shapes such as rectangle, circle or triangle, as long as can match with the electric energy transmitting coil in wireless adapter,
And electric induction, magnetic induction, magnetic resonance or the interaction of electromagnetic wave occur therewith.Wherein, the electric energy receiving coil and
The coil diameter of the electric energy transmitting coil, line warp, material can flexibly be set according to actual conditions, such as may be configured as 100mm
(millimeter), 0.5mm (millimeter), enamel covered wire etc., do not repeat this.
Optionally, the rectification module 12 usually may include corresponding rectifier circuit, such as can be halfwave rectifier bridge circuit,
Full wave bridge rectifier circuit or bridge rectifier bridge circuit etc..Wherein, the halfwave rectifier bridge circuit, full wave bridge rectifier circuit and
Bridge rectifier bridge circuit can be made of devices such as corresponding diode or thyristors.Certainly, more demanding to transfer efficiency
Scene in, device in the rectification module 12 can also be transistor, such as triode, metal-oxide-semiconductor.
It should be noted that the rectifier circuit in the rectification module 12 can also integrate other than it can voluntarily build
In corresponding logic chip, the embodiment of the present invention is not limited in any way this.
Optionally, as shown in Fig. 2, its physical circuit for the first wireless charging circuit described in the embodiment of the present invention
Structure diagram.Wherein, as shown in Figure 2, the charge pump charging module 14 in the first described wireless charging circuit can wrap
Include one or more charging paths in parallel, N number of charging paths parallel with one another as shown in Figure 2, each charging
Branch may include the charge pump charging submodule of one or more series connection, the M as shown in Figure 2 charges being serially connected
Pump charging submodule, wherein, N, M are positive integer, and, N can be equal or unequal with M.
As shown in the above, in embodiments of the present invention, it is constant-current phase when the charging stage, then the wireless charging is electric
Road can have following three points advantage：
, buck modular converter is omitted at first point so that the direct current that rectification module 12 exports can be directly entered electricity
Lotus pumps charging module 14, the loss that inductance element is brought is reduced, so as to improve charge efficiency and safety；
Second point employs the charge pump charging module 14 that decompression transfer efficiency is higher than buck charging module, reduces
The fever phenomenon of the wireless charging circuit, and then improve charge efficiency and the safety of the wireless charging circuit；
Thirdly, the charge pump charging module 14 that can be flowed up is employed so that flow through the charge pump charging module 14
Front stage circuits, the electric current such as electric energy receiving module, rectification module and buck modular converter is smaller, described so as to reduce
Loss pressure drop in wireless charging circuit further improves charge efficiency and the safety of the wireless charging circuit.
That is, in embodiments of the present invention, it can be achieved that triple promotions of charge efficiency and charging security, to this
It does not repeat.
It should be noted that in embodiments of the present invention, the number of the charge pump charging submodule in each charging paths
May be configured as it is identical, and, the specification of each charge pump charging submodule may be configured as unanimously, such as each charge pump charging submodule
In ESR (Equivalent Series Resistance, equivalent series resistance) it is mutually equal, so as to ensure each charging
The whole underpressure of branch and whole up-flow degree are consistent, such as voltage is down to 1/4, electric current is risen to 4 times.This just makes
Obtaining the voltage and current of each charging paths output can be mutually matched, and then ensure that the Multi-path electricity for being input to battery to be charged
Pressure and multichannel electric current can be mutually matched, and the embodiment of the present invention does not repeat this.
Specifically, as shown in figure 3, its circuit structure for the charge pump charging submodule described in the embodiment of the present invention shows
It is intended to.From the figure 3, it may be seen that for any charge pump charging submodule (in 1411~14NM as shown in Figure 2 any one),
The charge pump charging submodule may include first switch Q1, second switch Q2, third switch Q3, the 4th switch Q4, the first electricity
Hold C1 and the second capacitance C2, wherein：
When first charge pump in charge pump charging submodule charging paths where it charges submodule, such as
For 1411,1421 or 14N1 etc., the input terminal of the first switch Q1 can be connected with the output terminal of the rectification module 12；When
Such as it is 1412,1422 when the charge pump charging submodule is the rear class charge pump charging submodule in charging paths where it
Either the output terminal of the first switch Q1 such as 141M can with previous stage charge pump charge submodule (such as 1411,1421 or
Output terminal 141M-1) is connected, output terminal and the input terminal of third switch Q3, the first end phase of the first capacitance C1
Even；
The input terminal of the second switch Q2 switchs the defeated of Q4 with the second end of the first capacitance C1 and the described 4th
Enter end to be connected, output terminal is connected with the output terminal of the first end of the second capacitance C2 and third switch Q3；
The output terminal of the 4th switch Q4 is connected, and be used as public negative terminal with the second end of the second capacitance C2；
Input terminal of the input terminal of the first switch Q1 as charge pump charging submodule, the second switch Q2
Output terminal, the third switch Q3 output terminal or the second capacitance C2 first end as the charge pump charge son
The output terminal of module.
It should be noted that the charge pump charging submodule is (any one in 1411~14NM as shown in Figure 2
It is a) in the control terminal of each switching device can be connected with corresponding controller or driver, in the controller or
It is connected or turns off under the control of person's driver.For example, in the first driving for receiving the controller or driver transmission
During signal, the charge pump charging submodule first switch Q1 and second switch Q2 in the block is connected, closes the charge pump and fills
Electronic die third switch Q3 and the 4th switches Q4 in the block；It is driven in receive the controller or driver transmission second
During dynamic signal, charge pump charging submodule third switch Q3 and Q4 in the block is connected, closes the charge pump charging submodule
First switch Q1 and second switch Q2 in the block.
Specifically, when receiving first drive signal, since charge pump charging submodule in the block first is opened
Q1 and second switch Q2 conductings are closed, thus may be such that the electric energy that the electric energy transmitting coil of the wireless adapter is emitted can
To charge pump charging submodule capacitance in the block and the battery charging to be charged；Receiving second drive signal
When, due to third switch Q3 and the 4th switches Q4 conductings in the block of charge pump charging submodule, thus it may be such that the electricity
The lotus pump charging submodule capacitance in the block can charge to the battery to be charged.
Wherein, the controller or driver can be not only software program, can be also corresponding hardware device, as long as energy
It is enough to send corresponding drive signal to charge pump charging submodule according to actual conditions, for example, a signal week
The first half cycle of phase sends first drive signal, and second drive signal is sent in the later half period of a signal period
Deng；First drive signal and the second drive signal can flexibly be set according to actual conditions, such as can be program code, number
Signal or level signal etc. as long as disclosure satisfy that actual demand, do not repeat this.
It should be noted that due to by the first switch Q1, second switch Q2, third switch Q3, the 4th switch Q4, the
The circuit structure that one capacitance C1 and the second capacitance C2 are formed may be commonly referred to as Charge Pump Converter (charges
Pump transformation) circuit, therefore, the wireless charging circuit described in the embodiment of the present invention is specifically referred to alternatively as based on Charge Pump
The wireless charging circuit (being subsequently still referred to as wireless charging circuit) of Converter circuits.
Further, the first switch Q1, second switch Q2, the third switches of switch Q3 and the 4th Q4 may each comprise one
The switch element of a or more than two parallel connections, so as to be effectively reduced the first switch Q1, second switch Q2, third 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 wireless charging circuit charging time, improve the charge efficiency of the wireless charging circuit, this hair
Bright embodiment does not repeat this.
Preferably, the switch element can be transistor.
Optionally, 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 third switches of switch Q3 and the 4th 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.
Optionally, the first capacitance C1 and the second capacitance C2 at least may include one or more parallel connection
Capacity cell.Since the capacity cell of multiple parallel connections 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 time, improve the charge efficiency of the wireless charging circuit, the embodiment of the present invention does not also repeat this.
Optionally, as shown in figure 4, its another circuit for the charge pump charging submodule described in the embodiment of the present invention
Structure diagram.Specifically, as shown in Figure 4, the charge pump charging submodule may also include compensating electric capacity Cc, wherein：
When first charge pump in charge pump charging submodule charging paths where it charges submodule, institute
Stating the first end of compensating electric capacity Cc can be connected with 12 output terminal of rectification module；When charge pump charging submodule is its institute
In the charge circuit rear class charge pump charging submodule when, the first end of the compensating electric capacity Cc can be filled with previous stage charge pump
The output terminal of electronic module is connected, second end and the second end of the second capacitance C2 and the output terminal of the 4th switch Q4
It is connected.
Wherein, the compensating electric capacity Cc can be used in charge pump charging submodule first switch Q1 and second in the block
When switching Q2 unlatchings, the third switch Q4 closings of switch Q3 and the 4th, to charge pump charging submodule capacitance in the block (i.e. institute
State the first capacitance C1 and second capacitance C2) and the battery progress current compensation to be charged.
It should be noted that in order to further reduce the ESR of the compensating electric capacity Cc, reduce the charging time, improve charging
Efficiency, the compensating electric capacity Cc at least may include one or more capacity cell in parallel, this also do not repeated.
That is, similarly to the prior art, it in embodiments of the present invention, can also be in charge pump charging submodule
One compensating electric capacity Cc of input terminal parallel connection.Since the compensating electric capacity Cc is also connected in parallel on the rectification module 12 or previous stage electricity
The both ends of the output terminal of lotus pump charging submodule, thus the rectification module 12 or previous stage charge pump charging submodule can one
Directly charge to the compensating electric capacity Cc, so that when first switch Q1, second switch Q2 are connected, the compensating electric capacity Cc energy
It is enough to charge to the first capacitance C1, the second capacitance C2 and battery to be charged, and then the effect of current compensation is realized,
Avoid the rectification module 12 or previous stage charge pump charging submodule output electric current it is too small caused by charging rate compared with
The problem of slow and charging time is longer.
Specifically, the control module 13, the charging voltage being particularly used in the battery to be charged are more than preset
Minimum voltage threshold value, and less than preset ceiling voltage threshold value when, determine the battery to be charged charging stage be constant current rank
Section.
Wherein, the minimum voltage threshold value and the ceiling voltage threshold value can flexibly be set according to actual conditions, such as
It may be configured as 2.8V (volt) and 3.8V or may be configured as 3.0V and 4.6V etc., the embodiment of the present invention is not limited in any way this.
Optionally, the control module 13, is particularly used in the charging voltage for acquiring the battery to be charged in real time；Or
Person acquires the charging voltage of the battery to be charged every setting duration T1.
It should be noted that the setting duration T1 can flexibly be set according to actual conditions, 1ms (millis are such as may be configured as
Second), 1s (second), 1min (dividing) etc., as long as disclosure satisfy that practical demand precision, the embodiment of the present invention does not make this any
It limits.
Optionally, 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 can acquire in real time or the charging electricity every battery to be charged described in setting duration collection
Pressure, and collected charging voltage can be determined the battery to be charged charging stage and the charging stage be constant current rank
Duan Shi sends first control signal to the charge pump charging module 14, this is not repeated.
In addition, it is necessary to explanation, the control module 13 can also be used as aforementioned controllers or driver, be used for simultaneously
Each charge pump charging submodule into the charge pump charging module 14 sends drive signal, this is not repeated.
Further, as shown in figure 5, its circuit knot for second of wireless charging circuit described in the embodiment of the present invention
Structure schematic diagram.Specifically, as shown in Figure 5, second of wireless charging circuit may also include wireless communication module 15, wherein：
The control module 13 can be additionally operable to according to the charging voltage or the charging voltage and collected institute
The charging current generation charge control information of battery to be charged is stated, and the charge control information is sent to the wireless communication
Module 15；
The charge control information is sent to described by the wireless communication module 15 available for mode by radio communication
Wireless adapter, with as the alternating current transmitted by the wireless adapter adjustment electric energy transmitting module so that the rectification
The direct current of module output is as shown in following formula 1：
Wherein, the Ua_outRepresent the voltage of the direct current of the rectification module output；The Ia_outRepresent the rectification
The electric current of the direct current of module output；The M is positive integer, represents the charge pump connected in each charging paths charging
The number of module；The UbatteryRepresent the charging voltage of the battery to be charged；The U1Represent the charge pump charging module
And the loss pressure drop of circuit；The IbatteryRepresent the charging current of the battery to be charged.
Optionally, with as the alternating current transmitted by the wireless adapter adjustment electric energy transmitting module, it may include：
With the amplitude as the alternating current transmitted by the wireless adapter adjustment electric energy transmitting module；And/or
With the frequency as the alternating current transmitted by the wireless adapter adjustment electric energy transmitting module；And/or
With the electric current as the alternating current transmitted by the wireless adapter adjustment electric energy transmitting module.
Optionally, the control module 13, is particularly used in the charging current for acquiring the battery to be charged in real time；Or
Person acquires the charging current of the battery to be charged every setting duration T2.
It should be noted that the setting duration T2 can flexibly be set according to actual conditions, 1ms (millis are such as may be configured as
Second), 1s (second), 1min (dividing) etc., as long as disclosure satisfy that practical demand precision, the embodiment of the present invention does not make this any
It limits.
It should be noted that the loss pressure drop of the charge pump charging module 14 and circuit described herein can usually wrap
Other devices and conducting wire in the late-class circuit of the charge pump charging module 14, the charge pump charging module etc. are included to be led
The sum of the loss pressure drop of cause.
Wherein, the other devices in the late-class circuit of the charge pump charging module 14, the charge pump charging module 14
And the loss pressure drop caused by conducting wire etc. can acquire respectively, also can integrally acquire.
When needing to acquire respectively, can be acquired by following manner：
The first, in real time acquisition.By taking charge pump charging module 14 as an example, 14 liang of the charge pump charging module is acquired in real time
The voltage at end；Alternatively, regard the internal resistance of the charge pump charging module 14 as fixed value (measuring in advance), and acquisition is flowed through in real time
The electric current of the charge pump charging module 14 later, the electricity at 14 both ends of charge pump charging module is calculated according to Ohm's law
Pressure；
Secondth, it is acquired every setting time (flexibly being set according to actual conditions).Still it is with charge pump charging module 14
Example acquires the voltage at 14 both ends of charge pump charging module every setting time；Alternatively, by the charge pump charging module 14
Internal resistance regard fixed value as, and the electric current of the charge pump charging module 14 is flowed through every setting time acquisition, later, according to Europe
Nurse law calculates the voltage at 14 both ends of charge pump charging module.
It should be noted that in the scene higher to required precision, real-time acquisition mode can be preferentially selected, to precision
It is required that in less high scene, the acquisition mode every setting time can be preferentially selected；Furthermore, it should be noted that in circuit
Internal resistance is not with more multiple in the scene of the changes in environmental conditions such as temperature, humidity or in the more convenient current acquisition of voltage acquisition
In miscellaneous scene, it can preferentially select to directly acquire electric current, and determine the mode of voltage based on fixed internal resistance；In circuit internal resistance with temperature
In the scene of the changes in environmental conditions such as degree, humidity or in the relatively simple scene of the complex current acquisition of voltage acquisition,
It can preferentially select to directly acquire the mode of voltage.
When needing whole acquisition, can be acquired by following manner：
The first, in real time acquisition.The input terminal of the charge pump charging module 14 is acquired in real time to the defeated of battery to be charged
Enter the voltage between end；Alternatively, by between the input terminal of the input terminal of the charge pump charging module 14 to battery to be charged
Equivalent resistance regards fixed value (measuring in advance) as, and acquisition flows into the charging current of the battery to be charged in real time, later, can root
The input terminal of the charge pump charging module 14 is calculated to voltage between the input terminal of battery to be charged according to Ohm's law；
Secondth, it is acquired every setting time (flexibly being set according to actual conditions).Charge pump is acquired every setting time
The input terminal of charging module 14 is to the voltage between the input terminal of battery to be charged；Alternatively, by the charge pump charging module 14
Input terminal regard fixed value as to the equivalent resistance between the input terminal of battery to be charged, and acquired every setting time and flow into institute
The charging current of battery to be charged is stated, later, the input terminal that the charge pump charging module 14 can be calculated according to Ohm's law arrives
Voltage between the input terminal of battery to be charged.
That is, in the charging for carrying out battery to be charged, the loss pressure drop for considering to occur in circuit is also needed, and need
Corresponding compensating operation is carried out to loss pressure drop, such as by the alternating current of adjustment wireless adapter output, the adjustment rectification
The direct current that module 12 exports, to be compensated to the charging voltage being input in battery to be charged.Certainly, need what is illustrated
It is, it, can also be by addition other than can be by adjusting the charging voltage exported to compensate battery to be charged of wireless adapter
The external power supply of setting compensates, as caused the voltage that external power supply exports for the charge pump charging module and circuit
The sum of pressure drop etc. is lost, this is not repeated.
Specifically, the wireless communication module 15 generally can be the wireless communication unit in terminal device, such as can be WiFi
(WIreless FIdelity, Wireless Fidelity) unit, bluetooth unit, infrared unit, NFC (Near Field
Communication, near-field communication) unit and ZigBee (purple honeybee) unit etc., this is not made in the embodiment of the present invention any
It limits.
Further, the control module 13, it may also be used for the voltage for the direct current that the rectification module 12 exports is acquired,
And by the voltage of the direct current be sent to the wireless communication module 15 and, however, it is determined that the voltage of the direct current is not small
In the voltage threshold of setting, it is determined that the electric energy receiving module 11 is in effective chargeable range with the electric energy transmitting module；
The wireless communication module is additionally operable to the DC voltage being sent to the wireless adapter, so that institute
State the exchange that wireless adapter is emitted according to the electric energy transmitting module of the voltage of the direct current adjustment wireless adapter
Electricity.
It should be noted that determine that the electric energy receiving module 11 is in effective chargeable range with the electric energy transmitting module
It actually can be to determine that the terminal device is in effective chargeable range with the wireless adapter, this is not repeated.
Wherein, the voltage threshold can flexibly be set, such as may be configured as 7V, 10V, 13V according to actual conditions.It needs
It is bright, at this point, the control module 13 can be carried by corresponding interface display information, such as warning light flicker, prompting message
Show that user carries out corresponding terminal device or wireless adapter the movement of position so that the wireless adapter and the end
End equipment is in effective chargeable range, so as to promote the stability of charging, high efficiency and safety, and then promotes user's
Usage experience and satisfaction.
Further, as shown in fig. 6, its circuit knot for the third wireless charging circuit described in the embodiment of the present invention
Structure schematic diagram.Specifically, it will be appreciated from fig. 6 that the third described wireless charging circuit further includes buck charging module 16, wherein：
The control module 13, it may also be used for if it is determined that the charging stage of the battery to be charged is non-constant-current phase, then
Second control signal is generated, and the second control signal is sent to the buck charging module 16；
The buck charging module 16, available for when receiving the second control signal, by the direct current
Voltage is adjusted to the charging voltage of the battery to be charged, and the electric current of the direct current is adjusted to the battery to be charged
Charging current.
It should be noted that at this point, since the charging stage is non-constant-current phase, thus the electricity in entire wireless charging circuit
Stream is smaller, is not in larger loss pressure drop when low current flows through the buck charging module 16 therefore, compared to
It is of the prior art, no matter when all in a manner that buck charging module is charged, it can not only greatly promote
Charge efficiency and charging security, moreover it is possible to promote the usage experience and satisfaction of user, not repeat this.
Specifically, the control module 13 can also be specifically used for being not more than institute in the charging voltage of the battery to be charged
State minimum voltage threshold value 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.
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
It states.
Optionally, as shown in fig. 7, its physical circuit for the third wireless charging circuit described in the embodiment of the present invention
Structure diagram.Specifically, as shown in Figure 7, the buck charging module 16 in the third described wireless charging circuit can
Including one or more buck charging submodule in parallel (161~16K as shown in Figure 7, wherein, K is just whole
Number, can be identical or different from N, M).
Specifically, as shown in figure 8, its circuit structure for the buck charging submodule described in the embodiment of the present invention shows
It is intended to.As shown in Figure 8, charge submodule for any buck, buck charging submodule may include the 5th switch Q5,
6th switch Q6, the first inductance L1 and third capacitance C3, wherein：
The input terminal of the 5th switch Q5 is connected with the output terminal of the rectification module 12, and output terminal is opened with the described 6th
Close the first end connection of the input terminal and the first inductance L1 of Q6；
The output terminal of the 6th switch Q6 is connected, and be used as public negative terminal with the second end of the third capacitance C3；
The second end of the first inductance L1 is connected with the first end of the third capacitance C3；
Input terminal of the input terminal of the first switch Q1 as the buck charging module 16, the first inductance L1
Second end and the third capacitance C3 output terminal of the first end as the buck charging module 16.
For any buck charging submodule in the buck charging module 16, the buck charging submodule
Available for according to the control module 13 drive signal that either corresponding controller or driver are sent, adjusting the decompression
Formula charging submodule switching device in the block, so that the wireless power adapter connected with the wireless charging circuit can pass through
The buck charging submodule sends electric energy to the battery to be charged.
It should be noted that the buck charging submodule generally can be the Buck Switch of the prior art
Charger circuits, particular circuit configurations can be consistent with circuit of the prior art, do not repeat excessively herein.
Further, as shown in figure 9, its circuit knot for the 4th kind of wireless charging circuit described in the embodiment of the present invention
Structure schematic diagram.Specifically, as shown in Figure 9, the 4th kind of wireless charging circuit may also include wireless communication module 15, wherein：
The control module 13, it may also be used for acquire the voltage for the direct current that the rectification module 12 exports, and by described in
The voltage of direct current be sent to the wireless communication module 15 and, however, it is determined that the voltage of the direct current not less than setting
Voltage threshold, it is determined that the electric energy receiving module 11 is in effective chargeable range with the electric energy transmitting module；
The wireless communication module 15, it may also be used for the DC voltage is sent to the wireless adapter, so that
Obtain what the wireless adapter was emitted according to the electric energy transmitting module of the voltage of the direct current adjustment wireless adapter
Alternating current.
Similarly, determine that the electric energy receiving module 11 is in effective chargeable range actually with the electric energy transmitting module
It can be to determine that the terminal device is in effective chargeable range with the wireless adapter, this is not repeated.
Identical with foregoing teachings, the voltage threshold can flexibly be set according to actual conditions, such as may be configured as 7V, 10V,
13V etc..It should be noted that at this point, the control module 13 can by corresponding interface display information, as warning light flicker,
Prompting message etc. prompts user to carry out the movement of position to corresponding terminal device or wireless adapter so that described wireless
Adapter is in the terminal device in effective chargeable range, so as to promote the stability of charging, high efficiency and safety.
It should be noted that in embodiments of the present invention, the wireless charging circuit may also include corresponding switching switch
(not marked in attached drawing) may be generally disposed at the rectification module 12 and the charge pump charging module 14 and the rectification
Between module 12 and the buck charging module 16, control terminal can be connected with the control module 13, in control mould
Switch the power-up state of the charge pump charging module 14 and the buck charging module 16 under the control of block 13, such as in perseverance
The charge pump charging module 14 is adjusted to power on, the buck charging module 16 is adjusted to power down by the stream stage；Non-
The charge pump charging module 14 is adjusted to power down, is adjusted to power on by the buck charging module 16 by constant-current phase.
Further, the switching switch is in addition to can be used for switching the charge pump charging module 14 and buck charging mould
Except the power-up state of block 16, it may also be used for switch conducting and the pass of the wireless charging circuit and corresponding wired charging circuit
It is disconnected, this is not repeated.
It should be noted that in embodiments of the present invention, the wireless charging circuit may also include corresponding protection switch,
When excess temperature, overvoltage, under-voltage and overcurrent occur for the wireless charging circuit or the terminal device when abnormalities, to break
The wireless charging circuit is opened, so as to further improve the charging security of the wireless charging circuit, moreover it is possible to promote user
Usage experience and satisfaction.
In addition, it is necessary to explanation, wireless charging circuit or wireless charging electricity described in the embodiment of the present invention
Modules in road other than it can voluntarily build, can be also integrated in corresponding logic chip, so as to ensure terminal
The Miniaturization Design of equipment further improves the usage experience and satisfaction of user.
Correspondingly, the embodiment of the present invention additionally provides a kind of electronic equipment, is in the embodiment of the present invention as shown in Figure 10
The structure diagram of the electronic equipment.Specifically, as shown in Figure 10, the electronic equipment may include electronic equipment ontology
101st, the battery to be charged 102 in the electronic equipment and the wireless charging circuit described in the embodiment of the present invention
103。
It should be noted that the charging circuit described in the embodiment of the present invention one is not only applicable to use adapter to end
The scene of end equipment charging, could be applicable to the scene to charge using mobile power to terminal device, at this point, described will only can fit
Orchestration replaces with mobile power, and the embodiment of the present invention is not limited in any way this.
Correspondingly, the embodiment of the present invention additionally provides a kind of wireless charging system, as shown in figure 11, implements for the present invention
The structure diagram of wireless charging system described in example.Specifically, as shown in Figure 11, the wireless charging system may include nothing
Electronic equipment 112 described in line adapter 111 and the embodiment of the present invention, the wireless adapter 111 are used for the electricity
Sub- equipment 112 charges.
The embodiment of the present invention one provides a kind of wireless charging circuit, system and electronic equipment, the wireless charging circuit
It may include electric energy receiving module, rectification module, control module and charge pump charging module, wherein：The electric energy receiving module,
For the alternating current that the electric energy transmitting module for receiving wireless adapter is emitted, and the alternating current is sent to the rectification mould
Block；The direct current for the alternating current to be converted to direct current, and is sent to the charge pump and filled by the rectification module
Electric module；The control module for acquiring the charging voltage of battery to be charged, and is treated according to determining the charging voltage
The charging stage of rechargeable battery and, however, it is determined that the charging stage of the battery to be charged be constant-current phase, then generate first control
Signal processed, and the first control signal is sent to the charge pump charging module；The charge pump charging module, for
When receiving the first control signal, the direct current is depressured and is flowed up, and by the direct current after decompression and up-flow
Electricity is sent to the battery to be charged.Compared with the prior art, in embodiments of the present invention, first, the wireless charging circuit
In not include buck modular converter, it is thus possible to promoted decompression transfer efficiency, the charge efficiency of entire wireless charging circuit with
And charging security；Second, when the charging stage is constant-current phase, used charging module is charge pump charging module,
Internal charge and discharge electric device is capacitance rather than inductance, and, the voltage conversion efficiency of the charge pump charging module will not follow it
Input voltage and output voltage change, thus not only ensure that the decompression transfer efficiency of entire wireless charging circuit, also keep away
Exempt from the fever phenomenon of wireless charging circuit；Third, when the charging stage is constant-current phase, the use of the charge pump charging module
The electric current for flowing through its front stage circuits can not only effectively be reduced, moreover it is possible to reduce between electric energy receiving module and electric energy transmitting module
Coupling loss, thus can also further promote the charge efficiency and charging security of the 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 is applicable in the wireless charging circuit described in previous embodiment, and identical content can be found in the embodiment of the present invention one
Related content is not repeated excessively in the embodiment of the present invention.As shown in figure 12, it is wireless described in the embodiment of the present invention two
The flow diagram of charging method.Specifically, as shown in Figure 12, the wireless charging method may include following steps：
Step 1201：Receive the alternating current that the electric energy transmitting module of wireless adapter is emitted；
Step 1202：The alternating current is converted into direct current；
Step 1203：The charging voltage of battery to be charged is acquired, and the electricity to be charged is determined according to the charging voltage
The charging stage in pond and, however, it is determined that the charging stage of the battery to be charged be constant-current phase, then generate first control letter
Number；
Step 1204：Charge pump charging module drops the direct current when receiving the first control signal
Pressure and up-flow, and the direct current after decompression and up-flow is sent to the battery to be charged.
Wherein, the executive agent of the step 1201 can be electric energy receiving coil；The executive agent of the step 1202 can
For rectifier circuit, such as halfwave rectifier bridge circuit, full wave bridge rectifier circuit or bridge rectifier bridge circuit；The step 1203
Executive agent can be corresponding control unit, such as can be corresponding AP, CPU, MCU.
That is, in embodiments of the present invention, in the friendship that the electric energy transmitting module for receiving wireless adapter is emitted
After galvanic electricity；The alternating current can be converted to direct current；And the charging voltage of battery to be charged can be acquired, and fill according to described
Piezoelectric voltage determine the battery to be charged charging stage and, however, it is determined that the charging stage of the battery to be charged be constant current
Stage then generates first control signal；Later, can charge pump charging module when receiving the first control signal, to institute
It states direct current to be depressured and flowed up, and the direct current after decompression and up-flow is sent to the battery to be charged.Compared to
The prior art, in embodiments of the present invention, compared with the prior art, in embodiments of the present invention, first, the wireless charging electricity
Do not include buck modular converter in road, it is thus possible to promote decompression transfer efficiency, the charge efficiency of entire wireless charging circuit
And charging security；Second, when the charging stage is constant-current phase, used charging module is charge pump charging module,
Its internal charge and discharge electric device is capacitance rather than inductance, and, the voltage conversion efficiency of the charge pump charging module will not follow
Its input voltage and output voltage change, thus not only ensure that the decompression transfer efficiency of entire wireless charging circuit, also
Avoid the fever phenomenon of wireless charging circuit；Third, when the charging stage is constant-current phase, the charge pump charging module makes
With can not only effectively reduce the electric current for flowing through its front stage circuits, moreover it is possible to reduce between electric energy receiving module and electric energy transmitting module
Coupling loss, thus can also further promote the charge efficiency and charging security of the wireless charging circuit.
It should be noted that if the charging stage for determining the battery to be charged is constant-current phase, it may include：
It is more than preset minimum voltage threshold value, and less than preset ceiling voltage in the charging voltage of the battery to be charged
During threshold value, the charging stage for determining the battery to be charged is constant-current phase.
Optionally, however, it is determined that the charging stage of the battery to be charged is non-constant-current phase, then can generate the second control letter
Number；
Buck charging module adjusts the voltage of the direct current to described when receiving the second control signal
The charging voltage of battery to be charged, and the electric current of the direct current is adjusted to the charging current of the battery to be charged.
It should be noted that if determine the charging stage of the battery to be charged may include for non-constant-current phase：
It is no more than the minimum voltage threshold value or electric not less than the highest in the charging voltage of the battery to be charged
When pressing threshold value, the charging stage for determining the battery to be charged is non-constant-current phase.
That is, in constant-current phase, since charging current is excessive, the charge pump charging for not containing inductance element can be selected
Module charges to the battery to be charged, so as to promote charge efficiency, ensures charging security；In non-constant current rank
Section since charging circuit is smaller, can be selected the buck charging module containing inductance element and be filled to the battery to be charged
Electricity so as to remain able to promote charge efficiency, ensures charging security.
The embodiment of the present invention two provides a kind of wireless charging method, in the electric energy transmitting module for receiving wireless adapter
After the alternating current emitted；The alternating current can be converted to direct current；And the charging voltage of battery to be charged can be acquired, and
According to the charging voltage determine the battery to be charged charging stage and, however, it is determined that the charging of the battery to be charged
Stage is constant-current phase, then generates first control signal；Later, can charge pump charging module receiving it is described first control letter
Number when, the direct current is depressured and is flowed up, and the direct current after decompression and up-flow is sent to the electricity to be charged
Pond.Compared with the prior art, in embodiments of the present invention, compared with the prior art, in embodiments of the present invention, first, it is described
Do not include buck modular converter in wireless charging circuit, it is thus possible to promote the decompression conversion effect of entire wireless charging circuit
Rate, charge efficiency and charging security；Second, when the charging stage is constant-current phase, used charging module is charge
Pumping charging module, internal charge and discharge electric device is capacitance rather than inductance, and, the voltage conversion effect of the charge pump charging module
Rate will not follow its input voltage and output voltage to change, thus not only ensure that the decompression of entire wireless charging circuit turns
Efficiency is changed, also avoids the fever phenomenon of wireless charging circuit；Third, when the charging stage is constant-current phase, the charge pump is filled
The use of electric module can not only effectively reduce the electric current for flowing through its front stage circuits, moreover it is possible to reduce electric energy receiving module and be sent out with electric energy
The coupling loss between module is penetrated, thus can also further promote the charge efficiency of the wireless charging circuit and charging safety
Property.
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 be used complete hardware embodiment, complete software embodiment or combine software and hardware
The form of embodiment.Moreover, the calculating for wherein including computer usable program code in one or more can be used in the present invention
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 box and flowchart and/or the block diagram and/or the combination of box.These computer programs can be provided to refer to
The processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is enabled to generate
One machine so that the instruction generation performed by computer or the processor of other programmable data processing devices is used to implement
The device of function specified in one flow of flow chart or multiple flows and/or one box of block diagram or multiple boxes.
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 generation being stored in the computer-readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps are performed on calculation machine or other programmable devices to generate computer implemented processing, so as in computer or
The instruction offer performed on other programmable devices is used to implement in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then additional changes and modifications may be made to these embodiments.So appended claims be intended to be construed to include it is excellent
It selects embodiment and falls 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 range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (13)
1. a kind of wireless charging circuit, which is characterized in that including electric energy receiving module, rectification module, control module and charge
Charging module is pumped, wherein：
The electric energy receiving module, the alternating current that the electric energy transmitting module for receiving wireless adapter is emitted, and by described in
Alternating current is sent to the rectification module；
The direct current for the alternating current to be converted to direct current, and is sent to the charge pump by the rectification module
Charging module；
The control module for acquiring the charging voltage of battery to be charged, and is waited to fill according to determining the charging voltage
The charging stage of battery and, however, it is determined that the charging stage of the battery to be charged be constant-current phase, then generate first control
Signal, and the first control signal is sent to the charge pump charging module；
The charge pump charging module, for when receiving the first control signal, the direct current is carried out decompression and
Up-flow, and the direct current after decompression and up-flow is sent to the battery to be charged.
2. wireless charging circuit as described in claim 1, which is characterized in that
The control module is more than preset minimum voltage threshold value specifically for the charging voltage in the battery to be charged, and
During less than preset ceiling voltage threshold value, the charging stage for determining the battery to be charged is constant-current phase.
3. wireless charging circuit as described in claim 1, which is characterized in that the charge pump charging module includes one or two
The charging paths of a more parallel, each charging paths include the charge pump charging submodule of one or more series connection,
Charge submodule for any charge pump, charge pump charging submodule include first switch, second switch, third switch,
4th switch, the first capacitance and the second capacitance, wherein：
The input terminal of the first switch is connected with the output terminal of the rectification module, alternatively, it is sub to charge with previous stage charge pump
The output terminal of module is connected, and input terminal that output terminal is switched with the third, the first end of first capacitance are connected；
The input terminal of the second switch is connected with the second end of first capacitance and the input terminal of the 4th switch, defeated
Outlet is connected with the output terminal that the first end of second capacitance and the third switch；
The output terminal of 4th switch is connected, and be used as public negative terminal with the second end of second capacitance；
Input terminal of the input terminal of the first switch as charge pump charging submodule, the output of the second switch
Output of the first end at end, the output terminal of third switch or second capacitance as charge pump charging submodule
End.
4. wireless charging circuit as described in claim 1, which is characterized in that the wireless charging circuit further includes wireless communication
Module, wherein：
The control module is additionally operable to according to the charging voltage or the charging voltage and collected described to be charged
The charging current generation charge control information of battery, and the charge control information is sent to the wireless communication module；
The charge control information is sent to the wireless adaptation by the wireless communication module for mode by radio communication
Device, with as the alternating current transmitted by the wireless adapter adjustment electric energy transmitting module so that the rectification module output
Direct current be：
Wherein, the Ua_outRepresent the voltage of the direct current of the rectification module output；The Ia_outRepresent the rectification module
The electric current of the direct current of output；The M is positive integer, represents the charge pump connected in each charging paths charging submodule
Number；The UbatteryRepresent the charging voltage of the battery to be charged；The UlRepresent the charge pump charging module and
The loss pressure drop of circuit；The IbatteryRepresent the charging current of the battery to be charged.
5. wireless charging circuit as claimed in claim 4, which is characterized in that
The control module, is additionally operable to acquire the voltage of the direct current of the rectification module output, and by the electricity of the direct current
Pressure be sent to the wireless communication module and, however, it is determined that the voltage of the direct current not less than setting voltage threshold, then really
The fixed electric energy receiving module is in effective chargeable range with the electric energy transmitting module；
The wireless communication module is additionally operable to the DC voltage being sent to the wireless adapter, so that the nothing
The alternating current that line adapter is emitted according to the electric energy transmitting module of the voltage of the direct current adjustment wireless adapter.
6. wireless charging circuit as described in claim 1, which is characterized in that the wireless charging circuit further includes buck and fills
Electric module, wherein：
The control module is additionally operable to if it is determined that the charging stage of the battery to be charged is non-constant-current phase, then generate second
Signal is controlled, and the second control signal is sent to the buck charging module；
The buck charging module, for when receiving the second control signal, the voltage of the direct current to be adjusted
It is adjusted to the charging voltage of the battery to be charged, and by the electric current of the direct current to the charging electricity of the battery to be charged
Stream.
7. wireless charging circuit as claimed in claim 6, which is characterized 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. wireless charging circuit as claimed in claim 6, which is characterized in that the buck charging module includes one or two
The buck charging submodule of a more parallel；For any buck charging submodule, the buck charging submodule packet
The 5th switch, the 6th switch, the first inductance and third capacitance are included, wherein：
The input terminal of 5th switch is connected with the output terminal of the rectification module, the input of output terminal and the described 6th switch
The connection of the first end of end and first inductance；
The output terminal of 6th switch is connected, and be used as public negative terminal with the second end of the third capacitance；
The second end of first inductance is connected with the first end of the third capacitance；
Input terminal of the input terminal of the first switch as buck charging submodule, the second end of first inductance
And output terminal of the first end of the third capacitance as buck charging submodule.
9. wireless charging circuit as claimed in claim 6, which is characterized in that the wireless charging circuit further includes wireless communication
Module, wherein：
The control module, is additionally operable to acquire the voltage of the direct current of the rectification module output, and by the electricity of the direct current
Pressure be sent to the wireless communication module and, however, it is determined that the voltage of the direct current not less than setting voltage threshold, then really
The fixed electric energy receiving module is in effective chargeable range with the electric energy transmitting module；
The wireless communication module is additionally operable to the DC voltage being sent to the wireless adapter, so that the nothing
The alternating current that line adapter is emitted according to the electric energy transmitting module of the voltage of the direct current adjustment wireless adapter.
10. a kind of electronic equipment, which is characterized in that including electronic equipment ontology, to be charged in the electronic equipment
Battery and claim 1~9 any one of them wireless charging circuit.
11. a kind of wireless charging system, which is characterized in that set including the electronics described in wireless adapter and claim 10
Standby, the wireless adapter is used to charge to the electronic equipment.
12. a kind of wireless charging method, which is characterized in that including：
Receive the alternating current that the electric energy transmitting module of wireless adapter is emitted；
The alternating current is converted into direct current；
The charging voltage of battery to be charged is acquired, and the charging stage of the battery to be charged is determined according to the charging voltage,
And, however, it is determined that the charging stage of the battery to be charged is constant-current phase, then generates first control signal；
Charge pump charging module is depressured and is flowed up when receiving the first control signal, to the direct current, and will
Direct current after decompression and up-flow is sent to the battery to be charged.
13. wireless charging method as claimed in claim 12, which is characterized in that
If it is determined that the charging stage of the battery to be charged is non-constant-current phase, then second control signal is generated；
The voltage of the direct current is adjusted to described when receiving the second control signal and waits to fill by buck charging module
The charging voltage of battery, and the electric current of the direct current is adjusted to the charging current of the battery to be charged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710643207.4A CN108233454A (en) | 2017-07-31 | 2017-07-31 | A kind of wireless charging circuit, system, method and electronic equipment |
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| CN201710643207.4A CN108233454A (en) | 2017-07-31 | 2017-07-31 | A kind of wireless charging circuit, system, method and electronic equipment |
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| CN201710643207.4A Pending CN108233454A (en) | 2017-07-31 | 2017-07-31 | A kind of wireless charging circuit, system, method and electronic equipment |
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| CN115912582A (en) * | 2023-03-08 | 2023-04-04 | 紫光同芯微电子有限公司 | Wireless charger and control method thereof |
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