CN108233455A - A kind of wireless charging circuit, method, system and electronic equipment - Google Patents

A kind of wireless charging circuit, method, system and electronic equipment Download PDF

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Publication number
CN108233455A
CN108233455A CN201710643208.9A CN201710643208A CN108233455A CN 108233455 A CN108233455 A CN 108233455A CN 201710643208 A CN201710643208 A CN 201710643208A CN 108233455 A CN108233455 A CN 108233455A
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CN
China
Prior art keywords
charging
module
wireless
voltage
charge pump
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Pending
Application number
CN201710643208.9A
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Chinese (zh)
Inventor
黄昌松
陈林锋
贾勇
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Meizu Technology Co Ltd
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Meizu Technology Co Ltd
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Priority to CN201710643208.9A priority Critical patent/CN108233455A/en
Publication of CN108233455A publication Critical patent/CN108233455A/en
Pending legal-status Critical 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
    • 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
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter
    • 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
    • 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

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

Abstract

The invention discloses a kind of wireless charging circuit, method, system and electronic equipment, including electric energy receiving module, rectification 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 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 charge pump charging module by the rectification module；Direct current after decompression and up-flow for the direct current to be depressured and flowed up, and is sent to battery to be charged by the charge pump charging module.Compared with the prior art, in embodiments of the present invention, the charging module employed in wireless charging circuit is charge pump charging module, and internal charge and discharge electric device is capacitance rather than inductance；And charge pump charging module can so that the electric current of its front stage circuits is small, coupling loss is low, solve the problems, such as that charge efficiency is relatively low and charging security is relatively low.

Description

A kind of wireless charging circuit, method, system and electronic equipment
Technical field
The present invention relates to charging technique field more particularly to a kind of wireless charging circuit, method, system 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, method, system 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 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 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 charge pump charging module, for the direct current to be depressured and is flowed up, and will be after decompression and up-flow Direct current be sent to battery to be charged.
Specifically, 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 control module and wireless communication module, wherein：
The control module, for acquiring the charging voltage of the battery to be charged or charging voltage and charging current, And according to the charging voltage or charging voltage and charging current generation charge control information and, by the charge control Information is sent to the wireless communication module；
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 Uc_outRepresent the charging voltage of the battery to be charged；The UlRepresent the charge pump charging module And the loss pressure drop of circuit；The Ic_outRepresent the charging current of the battery to be charged.
Optionally, the wireless charging circuit further includes control module and buck converter module：
The control module, be additionally operable to acquire the battery to be charged charging voltage or charging voltage and charging electricity Stream, and according to the charging voltage or charging voltage and charging current generation control instruction and, by the control instruction It is sent to the buck converter module；
The buck converter module for receiving the direct current that the rectification module is sent, and is referred to based on the control It enables and adjusts the direct current, and the direct current after adjustment is sent to the charge pump charging module；Wherein, the direct current after adjustment Electricity is：
Wherein, the Ub_outRepresent the voltage of the direct current after adjustment；The Ib_outRepresent the electricity of the direct current after adjustment Stream；The M is positive integer, represents the number of the charge pump connected in each charging paths charging submodule；The Uc_out Represent the charging voltage of the battery to be charged；The UlRepresent the loss pressure drop of the charge pump charging module and circuit； The Ic_outRepresent the charging current of the battery to be charged.
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.
Further, the wireless charging circuit further includes switch module, wherein：
The control module is additionally operable to the status information for acquiring the wireless charging circuit and the battery to be charged, And according to the status information generate corresponding control instruction and, the control instruction is sent to the switch module；Institute Status information is stated as temperature information, information of voltage or current information；
The switch module, for according to the control instruction, adjust charge to the battery to be charged it is wireless The conducting and shutdown of charging path.
Optionally, the switch module is additionally operable to first port voltage and second port according to the switch module Voltage switches the conducting and shutdown of the wireless charging circuit and corresponding wired charging circuit；The wireless charging circuit Input port for the first port, the input port of the wired charging circuit is the second port.
The embodiment of the present invention additionally provides a kind of electronic equipment, including electronic equipment ontology, mounted on the electronic equipment In battery to be charged and the wireless charging circuit described in the embodiment of the present invention.
Correspondingly, the embodiment of the present invention additionally provides a kind of wireless charging system, including wireless adapter and the present invention Electronic equipment described in embodiment, the wireless adapter are used to charge to the electronic equipment.
Further, 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 direct current is depressured and is flowed up by charge pump charging module, and by the direct current after decompression and up-flow Electricity is sent to battery to be charged.
Specifically, 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；The wireless charging method further includes：
The charging voltage of the battery to be charged or charging voltage and charging current are acquired, and according to the charging electricity Pressure or charging voltage and charging current generation charge control information；
The charge control information is sent to the wireless adapter by mode by radio communication, with by described wireless suitable Orchestration adjusts the alternating current transmitted by the electric energy transmitting module so that the direct current of the rectification module 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 Uc_outRepresent the charging voltage of the battery to be charged；The UlRepresent the charge pump charging module And the loss pressure drop of circuit；The Ic_outRepresent the charging current of the battery to be charged.
Optionally, before the direct current is depressured and is flowed up, the wireless charging method further includes：
The charging voltage of the battery to be charged or charging voltage and charging current are acquired, and according to the charging electricity Pressure or charging voltage and charging current generation control instruction；
Based on the control instruction, the direct current is adjusted；Wherein, the direct current after adjustment is：
Wherein, the Ub_outRepresent the voltage of the direct current after adjustment；The Ib_outRepresent the electricity of the direct current after adjustment Stream；The M is positive integer, represents the number of the charge pump connected in each charging paths charging submodule；The Uc_out Represent the charging voltage of the battery to be charged；The U1Represent the loss pressure drop of the charge pump charging module and circuit； The Ic_outRepresent the charging current of the battery to be charged.
Further, the wireless charging method further includes：
The status information of the wireless charging circuit and the battery to be charged is acquired, and is given birth to according to the status information Into corresponding control instruction；The status information is temperature information, information of voltage or current information；
According to the control instruction, conducting and the pass of the wireless charging access to charge to the battery to be charged are adjusted It is disconnected.
The present invention has the beneficial effect that：
An embodiment of the present invention provides a kind of charging circuit, method, system and electronic equipment, including electric energy receiving module, Rectification module and charge pump charging module, wherein：The electric energy receiving module, for receiving the transmitting of the electric energy of wireless adapter The alternating current that module is emitted, and the alternating current is sent to the rectification module；The rectification module, for by the friendship Galvanic electricity is converted to direct current, and the direct current is sent to the charge pump charging module；The charge pump charging module is used In the direct current is depressured and is flowed up, and the direct current after decompression and up-flow is sent to battery to be charged.It compares In the prior art, in embodiments of the present invention, the charging module employed in the wireless charging circuit is charge pump charging mould Block, internal charge and discharge electric device is capacitance rather than inductance, thus improves the decompression transfer efficiency of entire wireless charging circuit； And the voltage conversion efficiency of the charge pump charging module will not be reduced due to its input voltage and too big output voltage pressure difference and be turned Efficiency is changed, hereby it is ensured that the decompression transfer efficiency of entire wireless charging circuit；Furthermore due to not wrapped in charge pump charging module Containing inductance element, the fever phenomenon of wireless charging circuit would also avoid；In addition, the use of charge pump charging module, can cause it The electric current of front stage circuits becomes smaller, so that the coupling loss between electric energy receiving module and electric energy transmitting module reduces, and then Charge efficiency and safety are not only improved, also improves the usage experience of user.
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 electrical block diagram of the first wireless charging circuit provided in the embodiment of the present invention one；
Fig. 2 show the particular circuit configurations signal of the first wireless charging circuit provided in the embodiment of the present invention one Figure；
Fig. 3 show the electrical block diagram of charge pump charging submodule provided in the embodiment of the present invention one；
Fig. 4 show another circuit structure signal of charge pump charging submodule 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 electrical block diagram of the third wireless charging circuit provided in the embodiment of the present invention one；
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 the 4th kind of wireless charging circuit provided in the embodiment of the present invention one；
Fig. 9 (a) show the electrical block diagram of the 5th kind of wireless charging circuit provided in the embodiment of the present invention one；
Fig. 9 (b) show the electrical block diagram of the 6th kind of wireless charging circuit provided in the embodiment of the present invention one；
Fig. 9 (c) show the electrical block diagram of the 7th kind of wireless charging circuit provided in the embodiment of the present invention one；
Fig. 9 (d) show the electrical block diagram of the 8th 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 electric energy receiving module 11, rectification module 12 and charge pump charging module 13, In：
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 13；
The charge pump charging module 13, available for the direct current is depressured and is flowed up, and will decompression and up-flow Direct current later is sent to battery to be charged.
That is, in embodiments of the present invention, the wireless charging circuit may include electric energy receiving module, rectification module And charge pump charging module, wherein：The electric energy receiving module, the electric energy transmitting module for receiving wireless adapter are sent out The alternating current penetrated, and the alternating current is sent to the rectification module；The rectification module, for the alternating current to be converted For direct current, and the direct current is sent to the charge pump charging module；The charge pump charging module, for described Direct current is depressured and is flowed up, and the direct current after decompression and up-flow is sent to battery to be charged.Compared to existing skill Art, in embodiments of the present invention, the charging module employed in the wireless charging circuit are charge pump charging module, inside Charge and discharge electric device for capacitance rather than inductance, thus improve the decompression transfer efficiency of entire wireless charging circuit；And the electricity The voltage conversion efficiency of lotus pump charging module will not follow its input voltage and the output voltage to change, hereby it is ensured that entire The decompression transfer efficiency of wireless charging circuit；Furthermore due to not including inductance element in charge pump charging module, it would also avoid nothing The fever phenomenon of line charging circuit；In addition, the use of charge pump charging module, can cause the electric current of its front stage circuits to become smaller, from And the coupling loss between electric energy receiving module and electric energy transmitting module is reduced, and then not only improve charge efficiency and peace Quan Xing also improves the usage experience of user.
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 13 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, the first described wireless charging circuit can have following three points Advantage：
, buck converter module is omitted at first point so that the direct current of rectification module output can be directly entered charge Charging module is pumped, the loss that inductance element is brought is reduced, so as to improve charge efficiency；
Second point employs the charge pump charging module that decompression transfer efficiency is higher than buck charging module, reduces institute The fever phenomenon of wireless charging circuit is stated, and then ensure that the charge efficiency of the wireless charging circuit；
Thirdly, the charge pump charging module that can be flowed up is employed so that before flowing through the charge pump charging module Grade circuit, if the electric current at electric energy receiving module, rectification module is smaller, so as to reduce the loss in the wireless charging circuit Pressure drop improves the charge efficiency of the wireless charging circuit.
That is, in embodiments of the present invention, it can be achieved that triple promotions of charge efficiency, do not repeat this.
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 1311~13NM 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 1311,1321 or 13N1 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 1312,1322 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 131M can with previous stage charge pump charge submodule (such as 1311,1321 or Output terminal 131M-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 1311~13NM 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 third capacitance C3, wherein：
When first charge pump in charge pump charging submodule charging paths where it charges submodule, institute Stating the first end of third capacitance C3 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 third capacitance C3 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 third capacitance C3 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 ESR (the Equivalent Series of the third capacitance C3 Resistance, equivalent series resistance), reduce the charging time, improve charge efficiency, the third capacitance C3 at least may include one The capacity cell of a or more than two parallel connections, does not also repeat this.
That is, similarly to the prior art, it in embodiments of the present invention, can also be in charge pump charging submodule One third capacitance C3 of input terminal parallel connection.Since the third capacitance C3 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 third capacitance C3, so that when first switch Q1, second switch Q2 are connected, the third capacitance C3 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.
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 control module 14 and channel radio Believe module 15, wherein：
The control module 14, available for acquiring the charging voltage of the battery to be charged or charging voltage and charging Electric current, and according to the charging voltage or charging voltage and charging current generation charge control information and, filled described Electric 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 shown in equation below 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 Uc_outRepresent the charging voltage of the battery to be charged；The UlRepresent the charge pump charging module And the loss pressure drop of circuit；The Ic_outRepresent 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 14, be particularly used in the charging voltage that acquires the battery to be charged in real time or Charging voltage and charging current；Alternatively, every the charging voltage or charging voltage of battery to be charged described in setting duration collection And charging current.
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 practical demand precision, the embodiment of the present invention does not make this any limit It is fixed.
It should be noted that the loss pressure drop of charge pump charging module and circuit described herein usually may include it is described Charge pump charging module 13, the charge pump charging module 13 late-class circuit in other devices and conducting wire etc. caused by The sum of pressure drop is lost.
Wherein, the loss pressure drop caused by the charge pump charging module 13, other devices and conducting wire etc. can adopt respectively Collection, 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 13 as an example, 13 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 13 as fixed value (measuring in advance), and acquisition is flowed through in real time The electric current of the charge pump charging module 13 later, the electricity at 13 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 13 Example acquires the voltage at 13 both ends of charge pump charging module every setting time；Alternatively, by the charge pump charging module 13 Internal resistance regard fixed value as, and the electric current of the charge pump charging module 13 is flowed through every setting time acquisition, later, according to Europe Nurse law calculates the voltage at 13 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 13 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 13 to battery to be charged etc. Effect 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 basis Ohm's law calculates the input terminal of the charge pump charging module 13 to voltage between the input terminal of battery to be charged；
Secondth, it is acquired every setting time (flexibly being set according to actual conditions).The electricity is acquired every setting time The input terminal of lotus pump charging module 13 is to the voltage between the input terminal of battery to be charged；Alternatively, by charge pump charging mould The input terminal of block 13 regards fixed value as to equivalent resistance between the input terminal of battery to be charged, and acquires and flow into every setting time The charging current of the battery to be charged later, can calculate the input terminal of the charge pump charging module 13 according to Ohm's law To 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, such as so that the voltage of external power supply output is the charge pump charging module and circuit The sum of loss pressure drop etc., this is not repeated.
Optionally, the control module 14 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 or charging voltage and charging current, and can will be according to the charging voltage or the charging voltage and the charging electricity The charge control information of stream generation is sent to the wireless communication module 15, this is not repeated.
In addition, it is necessary to explanation, the control module 14 can also be used as aforementioned controllers or driver, be used for simultaneously Each charge pump charging submodule into the charge pump charging module 13 sends drive signal, 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.
Optionally, the control module 14, 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 less than 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 15 is additionally operable to the DC voltage being sent to the wireless adapter, so that The friendship that the wireless adapter is emitted according to the electric energy transmitting module of the voltage of the direct current adjustment wireless adapter Galvanic 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 14 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.It will be appreciated from fig. 6 that the third described wireless charging circuit is in addition to may include the electric energy receiving module 11, described whole Except flow module 12 and the charge pump charging module 13, control module 14 and buck converter module 16 may also include：
The control module 14, it may also be used for the charging voltage or charging voltage of the acquisition battery to be charged and fill Electric current, and according to the charging voltage or charging voltage and charging current generation control instruction and, by the control Instruction is sent to the buck converter module 16；
The buck converter module 16, the direct current sent available for receiving the rectification module, and based on the control System instruction adjusts the direct current, and the direct current after adjustment is sent to the charge pump charging module 13；Wherein, after adjustment Direct current can be equation below 2 shown in：
Wherein, the Ub_outRepresent the voltage of the direct current after adjustment；The Ib_outRepresent the electricity of the direct current after adjustment Stream；The M is positive integer, represents the number of the charge pump connected in each charging paths charging submodule；The Uc_out Represent the charging voltage of the battery to be charged；The UlRepresent the loss pressure drop of the charge pump charging module and circuit； The Ic_outRepresent the charging current of the battery to be charged.
Wherein, the loss pressure drop of charge pump charging module 13 described herein is practical may include the buck converter module Loss pressure drop, method of determination can be found in aforementioned charge caused by circuit between 16 output terminal and the battery to be charged The method of determination of the loss pressure drop of charging module 13 and circuit is pumped, details are not described herein again.
It should be noted that the control module 14 can be still AP, CPU, MCU in the terminal device etc., as long as energy Enough acquire the charging voltage of the battery to be charged or charging voltage and charging current, and according to the charging voltage or Charging voltage and charging current generation control instruction and, the control instruction is sent to the buck converter module 16 , the embodiment of the present invention is not limited in any way this.
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 converter module 16 in the third described wireless charging circuit can Including one or more buck converter submodule in parallel (161~16K as shown in Figure 7, wherein, K is just whole Number, can be identical or different from N, M).
For any buck converter submodule in the buck converter module 16, the buck converter submodule Available for according to the control module 14 drive signal that either corresponding controller or driver are sent, adjusting the decompression Switching device in formula transformation submodule, so that the wireless power adapter connected with the wireless charging circuit can pass through The buck converter submodule sends electric energy to the charge pump charging module.
It should be noted that the buck converter 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.
Compared to second of wireless charging circuit described in the embodiment of the present invention, the third described in the embodiment of the present invention Kind wireless charging circuit can need not set corresponding wireless communication module 15, you can realize to being input to the battery to be charged The adjustment of charging voltage and charging current, so as to save cost, certainly, this needs to sacrifice part decompression transfer efficiency work It, therefore, can be after cost and decompression transfer efficiency be weighed, according to practical need in the design process of actual circuit for cost Design is sought, this is not repeated.
Further, as shown in figure 8, 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 8, the wireless charging circuit may also include wireless communication module 15, wherein：
The control module 14, 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 is additionally operable to the DC voltage being sent to the wireless adapter, so that The friendship that the wireless adapter is emitted according to the electric energy transmitting module of the voltage of the direct current adjustment wireless adapter Galvanic electricity.
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 14 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.
Further, the 5th kind of wireless charging circuit may also include switch module 17, wherein：
The control module 14, it may also be used for acquire the state letter of the wireless charging circuit and the battery to be charged Breath, and according to the status information generate corresponding control instruction and, the control instruction is sent to the switching molding Block；The status information is temperature information, information of voltage or current information；
The switch module 17, available for according to the control instruction, adjusting what is charged to the battery to be charged The conducting and shutdown of wireless charging access.
It should be noted that the status information may also include other information, such as humidity information, the embodiment of the present invention pair This is not limited in any way.
Wherein, the control instruction can be any form of instruction, such as can be program code, digital signal or level letter Number etc., as long as the switch module 17 can be controlled to perform corresponding conducting operation or shutdown operation, do not go to live in the household of one's in-laws on getting married to this It states.
Specifically, the control module 14 is particularly used in if it is determined that the wireless charging circuit or described to be charged Battery is in the abnormalities such as excess temperature, overvoltage, under-voltage or overcurrent, then generates shutdown instruction；If it is determined that the wireless charging circuit Or the battery to be charged is in normal condition, then generates turn-on command；
The switch module 17 specifically for being instructed according to the shutdown, is turned off and is charged to the battery to be charged Wireless charging access；Alternatively, according to the turn-on command, the wireless charging to charge to the battery to be charged is connected and leads to Road.
Wherein, the normal condition can be non-abnormality, that is, represent the wireless charging circuit, the electricity to be charged Chi Jun is not at the abnormalities such as excess temperature, overvoltage, under-voltage and overcurrent.
It should be noted that in order to reduce cost, in practical applications, the control module 14 can be only in abnormality When, generation shutdown instruction, and shutdown instruction is sent to the switch module 17, the switch module 17 to be controlled to disconnect the nothing Micro USB electric pathway, and in other periods, the control module 14 can not generate corresponding control instruction, this is not repeated.
It should be noted that the switch module 17 may be provided at any position of the wireless charging access, such as Fig. 9 (a) it is the electrical block diagram of the 5th kind of wireless charging circuit described in the embodiment of the present invention shown in.Specifically, by Fig. 9 (a) is it is found that the switch module 17 may be provided between the electric energy receiving module 11 and the rectification module 12；
It is the circuit structure signal of the 6th kind of wireless charging circuit described in the embodiment of the present invention as shown in Fig. 9 (b) Figure.Specifically, by Fig. 9 (b) it is found that the switch module 17 can also be provided at the rectification module 12 and the buck converter Between module 16；
It is the circuit structure signal of the 7th kind of wireless charging circuit described in the embodiment of the present invention as shown in Fig. 9 (c) Figure.Specifically, by Fig. 9 (c) it is found that the switch module 17 can also be provided at the buck converter module 16 and the electricity Between lotus pump charging module 13；
It is the structure diagram of the 8th kind of wireless charging circuit described in the embodiment of the present invention as shown in Fig. 9 (d). Specifically, by Fig. 9 (d) it is found that the switch module 17 can also be provided at the charge pump charging module 13 and described wait to fill Between battery.
That is, position of the switch module 17 in the wireless charging circuit can flexibly be set according to actual conditions It is fixed, as long as the turn-on and turn-off of the wireless charging access, the embodiment of the present invention can be adjusted according to the control instruction This is not limited in any way.
Further, as shown in Fig. 9 (a), when the switch module 17 is arranged on the electric energy receiving module 11 and institute When stating between rectification module 12, the switch module 17, it may also be used for according to the first port voltage of the switch module 17 with And second port voltage, switch the conducting and shutdown of the wireless charging circuit and corresponding wired charging circuit；The nothing The input port of line charging circuit is the first port, and the input port of the wired charging circuit is the second port.
It should be noted that in embodiments of the present invention, the modules in wireless charging circuit can be set simultaneously, also may be used Set therein several, as long as disclosure satisfy that practical demand, the embodiment of the present invention is not limited in any way this.
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 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.
In addition, the embodiment of the present invention additionally provides a kind of wireless charging system, it is the embodiment of the present invention as shown in figure 11 Described in wireless charging electric wire system structure diagram.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 can be used for described Electronic equipment 112 charges.
The embodiment of the present invention one provides a kind of wireless charging circuit, electronic equipment and system, it may include electric energy receives mould Block, rectification 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 charge pump charging mould Direct current after decompression and up-flow for the direct current to be depressured and flowed up, and is sent to battery to be charged by block. Compared with the prior art, in embodiments of the present invention, the charging module employed in the wireless charging circuit is filled for charge pump Electric module, internal charge and discharge electric device is capacitance rather than inductance, thus improves the decompression conversion of entire wireless charging circuit Efficiency；And the voltage conversion efficiency of the charge pump charging module will not follow its input voltage and output voltage to change, Hereby it is ensured that the decompression transfer efficiency of entire wireless charging circuit；Furthermore due to not including inductance in charge pump charging module Element would also avoid the fever phenomenon of wireless charging circuit；In addition, the use of charge pump charging module, can so that its prime is electric The electric current on road becomes smaller, so that the coupling loss between electric energy receiving module and electric energy transmitting module reduces, and then not only carries Charge efficiency and safety have been risen, has also improved the usage experience of user.
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 direct current is depressured and is flowed up by charge pump charging module, and will decompression and up-flow Direct current later is sent to battery to be charged.
That is, in the embodiment of the present invention, the alternating current that the electric energy transmitting module of wireless adapter is emitted can be received； And the alternating current can be converted to direct current；And can by charge pump charging module to the direct current carry out decompression and Up-flow, and the direct current after decompression and up-flow is sent to battery to be charged.For compared with the prior art, of the invention real It applies in example, the direct current for being input to battery to be charged is after being depressured and flowed up by charge pump charging module, due to Charge and discharge electric device inside charge pump charging module is capacitance rather than inductance, thus improves the decompression of entire wireless charging circuit Transfer efficiency；And the voltage conversion efficiency of the charge pump charging module will not follow its input voltage and output voltage to occur Variation, hereby it is ensured that the decompression transfer efficiency of entire wireless charging circuit；Furthermore due to not including in charge pump charging module Inductance element would also avoid the fever phenomenon of wireless charging circuit；In addition, the use of charge pump charging module, before causing it The electric current of grade circuit becomes smaller so that coupling loss between electric energy receiving module and electric energy transmitting module reduces, into without Charge efficiency and safety are only improved, can also promote the usage experience of user.
Optionally, the charge pump charging module may include one or more charging paths in parallel, each is filled Electric branch may include the charge pump charging submodule of one or more series connection；The wireless charging method may also include：
The charging voltage of the battery to be charged or charging voltage and charging current are acquired, and according to the charging electricity Pressure or charging voltage and charging current generation charge control information；
The charge control information is sent to the wireless adapter by mode by radio communication, with by described wireless suitable Orchestration adjusts the alternating current transmitted by the electric energy transmitting module so that direct current such as 3 institute of formula of the rectification module output Show：
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 Uc_outRepresent the charging voltage of the battery to be charged；The UlRepresent the charge pump charging module And the loss pressure drop of circuit；The Ic_outRepresent the charging current of the battery to be charged.
It should be noted that the communication described at this time usually may include WiFi communication mode, Bluetooth communication side Formula, over the horizon communication system, NFC communication unit, purple honeybee communication unit etc., are not limited in any way this.
Further, before the direct current is depressured and is flowed up, the wireless charging method may also include：
The charging voltage of the battery to be charged or charging voltage and charging current are acquired, and according to the charging electricity Pressure or charging voltage and charging current generation control instruction；
Based on the control instruction, the direct current is adjusted；Wherein, the direct current after adjustment is shown in equation below 4：
Wherein, the Ub_outRepresent the voltage of the direct current after adjustment；The Ib_outRepresent the electricity of the direct current after adjustment Stream；The M is positive integer, represents the number of the charge pump connected in each charging paths charging submodule；The Uc_out Represent the charging voltage of the battery to be charged；The UlRepresent the loss pressure drop of the charge pump charging module and circuit； The Ic_outRepresent the charging current of the battery to be charged.
Further, the wireless charging method further includes：
The status information of the wireless charging circuit and the battery to be charged is acquired, and is given birth to according to the status information Into corresponding control instruction；The status information is temperature information, information of voltage or current information；
According to the control instruction, conducting and the pass of the wireless charging access to charge to the battery to be charged are adjusted It is disconnected.
Specifically, corresponding control instruction is generated according to the status information, it may include：
If it is determined that be in excess temperature, overvoltage, under-voltage or overcurrent etc. different for the wireless charging circuit or the battery to be charged Normal state then generates shutdown instruction；If it is determined that the wireless charging circuit or the battery to be charged are in normal condition, then Generate turn-on command.
Wherein, the normal condition can be non-abnormality, that is, represent the wireless charging circuit, the electricity to be charged Chi Jun is not at the abnormalities such as excess temperature, overvoltage, under-voltage and overcurrent.
Further, according to the control instruction, the wireless charging access to charge to the battery to be charged is adjusted Conducting and shutdown, it may include：
It is instructed according to the shutdown, turns off the wireless charging access to charge to the battery to be charged；Alternatively,
According to the turn-on command, the wireless charging access to charge to the battery to be charged is connected.
It should be noted that in order to reduce cost, in practical applications, shutdown instruction can be generated only in abnormality, Remaining period can give tacit consent to conducting, and without generating turn-on command, this is not repeated.
Optionally, the wireless charging method may also include：
According to first port voltage and second port voltage, switch wireless charging circuit and corresponding wired charging electricity The conducting and shutdown on road；The input port of the wireless charging circuit be the first port, the wired charging circuit it is defeated Inbound port is the second port.
The embodiment of the present invention two provides a kind of wireless charging method, can receive the electric energy transmitting module institute of wireless adapter The alternating current of transmitting；And the alternating current can be converted to direct current；It and can be by charge pump charging module to the direct current Electricity is depressured and is flowed up, and the direct current after decompression and up-flow is sent to battery to be charged.Compared with the prior art and Speech, in embodiments of the present invention, the direct current for being input to battery to be charged is depressured and is risen by charge pump charging module After stream, since the charge and discharge electric device inside charge pump charging module is capacitance rather than inductance, thus improve entire wireless The decompression transfer efficiency of charging circuit；And the voltage conversion efficiency of the charge pump charging module will not follow its input voltage It changes with output voltage, hereby it is ensured that the decompression transfer efficiency of entire wireless charging circuit；Furthermore since charge pump is filled Do not include inductance element in electric module, would also avoid the fever phenomenon of wireless charging circuit；In addition, charge pump charging module makes With, the electric current of its front stage circuits can be caused to become smaller so that between electric energy receiving module and electric energy transmitting module coupling damage Consumption reduces, and then not only improves charge efficiency and safety, can also promote the usage experience of user.
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 present invention can be used and wherein include computer usable program code at one or more The computer that computer-usable storage medium is implemented on (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) The form of program 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 and charge pump charging mould Block, 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 charge pump charging module, for the direct current to be depressured and is flowed up, and will be straight after decompression and up-flow Galvanic electricity is sent to battery to be charged.
2. 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.
3. wireless charging circuit as described in claim 1, which is characterized in that the wireless charging circuit further includes control module And wireless communication module, wherein：
The control module, for acquiring the charging voltage of the battery to be charged or charging voltage and charging current, and root According to the charging voltage or charging voltage and charging current generation charge control information and, by the charge control information It 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 Uc_outRepresent the charging voltage of the battery to be charged；The U1Represent the charge pump charging module and The loss pressure drop of circuit；The Ic_outRepresent the charging current of the battery to be charged.
4. wireless charging circuit as described in claim 1, which is characterized in that the wireless charging circuit further includes control module And buck converter module：
The control module is additionally operable to acquire the charging voltage of the battery to be charged or charging voltage and charging current, and According to the charging voltage or charging voltage and charging current generation control instruction and, the control instruction is sent to The buck converter module；
The buck converter module, for receiving the direct current that the rectification module is sent, and based on the control instruction tune The whole direct current, and the direct current after adjustment is sent to the charge pump charging module；Wherein, the direct current after adjustment For：
Wherein, the Ub_outRepresent the voltage of the direct current after adjustment；The Ib_outRepresent the electric current of the direct current after adjustment；Institute M is stated as positive integer, represents the number of the charge pump connected in each charging paths charging submodule；The Uc_outRepresent institute State the charging voltage of battery to be charged；The UlRepresent the loss pressure drop of the charge pump charging module and circuit；It is described Ic_outRepresent the charging current of the battery to be charged.
5. wireless charging circuit as claimed in claim 4, 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.
6. such as Claims 1 to 5 any one of them wireless charging circuit, which is characterized in that the wireless charging circuit also wraps Switch module is included, wherein：
The control module is additionally operable to the status information for acquiring the wireless charging circuit and the battery to be charged, and root According to the status information generate corresponding control instruction and, the control instruction is sent to the switch module；The shape State information is temperature information, information of voltage or current information；
The switch module, for according to the control instruction, adjusting the wireless charging to charge to the battery to be charged The conducting and shutdown of access.
7. wireless charging circuit as claimed in claim 6, which is characterized in that
The switch module is additionally operable to, according to the first port voltage of the switch module and second port voltage, switch institute State the conducting and shutdown of wireless charging circuit and corresponding wired charging circuit；The input port of the wireless charging circuit is The first port, the input port of the wired charging circuit is the second port.
8. a kind of electronic equipment, which is characterized in that the electricity to be charged including electronic equipment ontology, in the electronic equipment Pond and claim 1~7 any one of them wireless charging circuit.
9. a kind of wireless charging system, which is characterized in that set including the electronics described in wireless adapter and claim 8 Standby, the wireless adapter is used to charge to the electronic equipment.
10. 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 direct current is depressured and is flowed up by charge pump charging module, and the direct current after decompression and up-flow is sent out It send to battery to be charged.
11. wireless charging method as claimed in claim 10, which is characterized in that the charge pump charging module include one or More than two charging paths in parallel, each charging paths include the charge pump charging submodule of one or more series connection Block；The wireless charging method further includes：
Acquire the charging voltage of the battery to be charged or charging voltage and charging current, and according to the charging voltage or Person's charging voltage and charging current generation charge control information；
The charge control information is sent to the wireless adapter by mode by radio communication, with by the wireless adapter Adjust the alternating current transmitted by the electric energy transmitting module so that the direct current of rectification module output is：
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 Uc_outRepresent the charging voltage of the battery to be charged；The UlRepresent the charge pump charging module and The loss pressure drop of circuit；The Ic_outRepresent the charging current of the battery to be charged.
12. wireless charging method as claimed in claim 10, which is characterized in that the direct current is being depressured and is being flowed up Before, the wireless charging method further includes：
Acquire the charging voltage of the battery to be charged or charging voltage and charging current, and according to the charging voltage or Person's charging voltage and charging current generation control instruction；
Based on the control instruction, the direct current is adjusted；Wherein, the direct current after adjustment is：
Wherein, the Ub_outRepresent the voltage of the direct current after adjustment；The Ib_outRepresent the electric current of the direct current after adjustment；Institute M is stated as positive integer, represents the number of the charge pump connected in each charging paths charging submodule；The Uc_outRepresent institute State the charging voltage of battery to be charged；The UlRepresent the loss pressure drop of the charge pump charging module and circuit；It is described Ic_outRepresent the charging current of the battery to be charged.
13. such as claim 10~12 any one of them wireless charging method, which is characterized in that the wireless charging method is also Including：
The status information of the wireless charging circuit and the battery to be charged is acquired, and phase is generated according to the status information The control instruction answered；The status information is temperature information, information of voltage or current information；
According to the control instruction, the conducting and shutdown of the wireless charging access to charge to the battery to be charged are adjusted.
CN201710643208.9A 2017-07-31 2017-07-31 A kind of wireless charging circuit, method, system and electronic equipment Pending CN108233455A (en)

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Application publication date: 20180629