CN108233453A - A kind of charging method, device and electronic equipment - Google Patents

A kind of charging method, device and electronic equipment Download PDF

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Publication number
CN108233453A
CN108233453A CN201710642947.6A CN201710642947A CN108233453A CN 108233453 A CN108233453 A CN 108233453A CN 201710642947 A CN201710642947 A CN 201710642947A CN 108233453 A CN108233453 A CN 108233453A
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CN
China
Prior art keywords
bat
voltage
charging
value
bout
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CN201710642947.6A
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Chinese (zh)
Inventor
陈林锋
贾勇
黄昌松
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Meizu Technology Co Ltd
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Meizu Technology Co Ltd
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Priority to CN201710642947.6A priority Critical patent/CN108233453A/en
Publication of CN108233453A publication Critical patent/CN108233453A/en
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    • H02J7/025—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J5/005—
    • 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

Abstract

A kind of charging method, device and electronic equipment, the electric signal of wireless adapter transmitting can be received and generate alternating current, and the alternating current is converted into direct current, and the voltage value of the direct current is adjusted to target voltage values, finally, it is exported after being depressured to voltage value for the direct current of the target voltage values to battery.That is, electric energy is converted by the way of decompression after rectification, it may be such that the prime input voltage of corresponding charging unit increases substantially, prime input current significantly reduces, so as to reduce the power attenuation of equiva lent impedance in charging circuit, reduce fever and improve device security；And since low current is relatively low to the performance requirement of electric energy receiving element, it can also reduce the hardware cost of charging unit.

Description

A kind of charging method, device and electronic equipment
Technical field
The present invention relates to a kind of charging technique field more particularly to charging method, device and electronic equipments.
Background technology
It is constantly promoted with the configuration of electronic equipment and constantly become larger to the demand and consumption of electricity, electronics is set The charging modes of standby battery are more and more, and in order to improve the convenience of charging, the mode of wireless charging has been increasingly becoming one The new charge trend of kind.
As shown in Figure 1, the wireless charging circuit of the electronic equipment side of the prior art mainly uses Buck converters and Buck Charging circuit；Wherein, Buck converters are more stable for the direct current that prime exports to be adjusted to ripple smaller, voltage value Direct current；Buck charging circuits are used to that the direct current that Buck converters export to be adjusted and charged the battery.
But in said structure, the energy conversion efficiency of Buck converters and Buck charging circuits is relatively low, causes The whole energy conversion efficiency of entire wireless charging circuit is lower, not only affects the charge efficiency of electronic equipment；Moreover, because The form of expression of power attenuation is fever, therefore, can also reduce user experience and influence the safety of electronic equipment.
That is, that charge efficiency is resulted in since energy conversion efficiency is relatively low is low and set for existing wireless charging method Preparation heat seriously affects the problems such as safety, and there is an urgent need for a kind of new charging methods to solve the above problems.
Invention content
An embodiment of the present invention provides a kind of charging method, device and electronic equipment, to solve existing wireless charging Method is due to the problem of relatively low caused electronic equipment charge efficiency of energy conversion efficiency is low and fever is serious.
On the one hand, an embodiment of the present invention provides a kind of charging method, the method includes：
It receives the electric signal of wireless adapter transmitting and generates alternating current；
The alternating current is converted into direct current；
The voltage value of the direct current is adjusted to target voltage values；
It is exported after being depressured to voltage value for the direct current of the target voltage values to battery.
Preferably, the voltage value by the direct current is adjusted to target voltage values, is specifically included：According to filling for battery Electricity condition information and circuit parameter information, determine the target voltage values；Wherein, charging status information includes battery voltage value, Or battery voltage value and charging current value.
Still optionally further, it is described according to the charging status information of battery and circuit parameter information, determine the target electricity Pressure value, specifically includes：
If it is determined that battery voltage value VBATHigher than the first setting voltage threshold VBATTHAnd not higher than the second setting voltage threshold VCV-ΔVBATAnd charging current value IBATLess than goal-selling charging current value IBATSET, it is determined that enable to IBATIncreased mesh Mark voltage value VBOUT；
If it is determined that battery voltage value VBATHigher than the first setting voltage threshold VBATTHAnd not higher than the second setting voltage threshold VCV-ΔVBATAnd charging current value IBATWithin goal-selling charging current value range, it is determined that can realize that constant current is filled The target voltage values V of electricityBOUT；
If it is determined that battery voltage value VBATHigher than the second setting voltage threshold VCV-ΔVBATAnd set voltage threshold less than third VCV+ΔVBAT, and charging current value IBATHigher than default cut-off charging current value IBATEND, it is determined that it can realize constant-voltage charge Target voltage values VBOUT；
Wherein, the first setting voltage threshold VBATTHNot higher than the described second setting voltage threshold VCV-ΔVBAT, Δ VBATFor positive number.
Still optionally further, it is described according to the charging status information of battery and circuit parameter information, determine the target electricity Pressure value, specifically includes：
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBAT<IBATSET-ΔI1, it is determined that VBOUT=V'BOUT+ΔV1；Wherein, V'BOUTThe target voltage values determining for the last time；
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBATSET-ΔI1≤IBAT<IBATSET-ΔI2, it is determined that VBOUT= V'BOUT+ΔV2；Wherein, Δ I1、ΔI2、ΔV1And Δ V2For positive number；
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBATSET-ΔI2≤IBAT≤IBATSET+ΔI2, then V is kept firstBOUT It is constant, and perform following operate：When determining IBAT＞ IBATSET-ΔI3When, keep VBOUTIt is constant；When determining IBAT≤IBATSET-ΔI3 When, determine VBOUT=V'BOUT+ΔV2；Wherein, Δ I3For positive number；
If it is determined that VCV-ΔVBAT<VBAT<VCV+ΔVBAT, and IBAT>IBATEND, it is determined that VBOUT=V'BOUT-ΔV2。
Preferably, it is described voltage value is depressured for the direct current of the target voltage values after output to battery, specifically Including：
Voltage-dropping type charge pump charging sub-circuit based on a voltage-dropping type charge pump charging sub-circuit or more than two series connection It is exported after being depressured to voltage value for the direct current of the target voltage values to battery；
Wherein, any voltage-dropping type charge pump charging sub-circuit includes first switch group, second switch group, the first partial pressure Capacitance and the second derided capacitors, any voltage-dropping type charge pump charging sub-circuit, for opening the first switch group, are closed Close the second switch group so that first derided capacitors and the charging of the second derided capacitors, and output voltage size is institute State the direct current of the voltage value of the first derided capacitors；And the first switch group is closed, the second switch group is opened, is made Obtain first derided capacitors and the electric discharge of the second derided capacitors, and the voltage that output voltage size is first derided capacitors The direct current of value.
Still optionally further, the circuit parameter information include series connection voltage-dropping type charge pump charging sub-circuit series N, The voltage conversion efficiency of any voltage-dropping type charge pump charging sub-circuitAnd any voltage-dropping type charge pump charging sub-circuit The ratio between input voltage and output voltageIn it is any one or more；Wherein, N is positive integer more than or equal to 1, i=1, 2……N；
It is described according to the charging status information of battery and circuit parameter information, determine the target voltage values, specifically include：
If it is determined that battery voltage value VBATHigher than the first setting voltage threshold VBATTHAnd less than third setting voltage threshold VCV+ ΔVBATWhen, determine initial voltage value as target voltage values in the following ways：
Wherein, the first setting voltage threshold VBATTHLess than third setting voltage threshold VCV+ΔVBAT。
On the other hand, the embodiment of the present invention additionally provides a kind of charging unit, including：
Electric energy receiving unit, for receiving the electric signal of wireless adapter transmitting and generating alternating current；
Rectification unit, for the alternating current to be converted to direct current；
Processing unit, for adjusting the voltage value of the direct current to target voltage values；
Charhing unit is depressured, for output after being depressured to voltage value for the direct current of the target voltage values to electricity Pond.
Preferably, the processing unit specifically for the charging status information according to battery and circuit parameter information, determines The target voltage values；Wherein, charging status information includes battery voltage value or battery voltage value and charging current value.
Still optionally further, the processing unit, specifically for if it is determined that battery voltage value VBATHigher than the first setting voltage Threshold value VBATTHAnd not higher than the second setting voltage threshold VCV-ΔVBATAnd charging current value IBATLess than goal-selling charging current Value IBATSET, it is determined that enable to IBATIncreased target voltage values VBOUT；If it is determined that battery voltage value VBATHigher than the first setting Voltage threshold VBATTHAnd not higher than the second setting voltage threshold VCV-ΔVBATAnd charging current value IBATIt charges positioned at goal-selling Within the scope of On The Current Value, it is determined that can realize the target voltage values V of constant-current chargeBOUT；If it is determined that battery voltage value VBATIt is high In the second setting voltage threshold VCV-ΔVBATAnd less than third setting voltage threshold VCV+ΔVBAT, and charging current value IBATIt is higher than Default cut-off charging current value IBATEND, it is determined that it can realize the target voltage values V of constant-voltage chargeBOUT；Wherein, described first Set voltage threshold VBATTHNot higher than the described second setting voltage threshold VCV-ΔVBAT, Δ VBATFor positive number.
Still optionally further, the processing unit, is specifically used for：
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBAT<IBATSET-ΔI1, it is determined that VBOUT=V'BOUT+ΔV1；Wherein, V'BOUTThe target voltage values determining for the last time；
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBATSET-ΔI1≤IBAT<IBATSET-ΔI2, it is determined that VBOUT= V'BOUT+ΔV2；Wherein, Δ I1、ΔI2、ΔV1And Δ V2For positive number；
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBATSET-ΔI2≤IBAT≤IBATSET+ΔI2, then V is kept firstBOUT It is constant, and perform following operate：When determining IBAT>IBATSET-ΔI3When, keep VBOUTIt is constant；When determining IBAT≤IBATSET-ΔI3 When, determine VBOUT=V'BOUT+ΔV2；Wherein, Δ I3For positive number；
If it is determined that VCV-ΔVBAT<VBAT<VCV+ΔVBAT, and IBAT>IBATEND, it is determined that VBOUT=V'BOUT-ΔV2。
Preferably, the decompression charhing unit, specifically for being based on a voltage-dropping type charge pump charging sub-circuit or two The voltage-dropping type charge pump charging sub-circuit connected above is defeated after being depressured to voltage value for the direct current of the target voltage values Go out to battery；
Wherein, any voltage-dropping type charge pump charging sub-circuit includes first switch group, second switch group, the first partial pressure Capacitance and the second derided capacitors, any voltage-dropping type charge pump charging sub-circuit, for opening the first switch group, are closed Close the second switch group so that first derided capacitors and the charging of the second derided capacitors, and output voltage size is institute State the direct current of the voltage value of the first derided capacitors；And the first switch group is closed, the second switch group is opened, is made Obtain first derided capacitors and the electric discharge of the second derided capacitors, and the voltage that output voltage size is first derided capacitors The direct current of value.
Still optionally further, the circuit parameter information include series connection voltage-dropping type charge pump charging sub-circuit series N, The voltage conversion efficiency of any voltage-dropping type charge pump charging sub-circuitAnd any voltage-dropping type charge pump charging sub-circuit The ratio between input voltage and output voltageIn it is any one or more；Wherein, N is positive integer more than or equal to 1, i=1, 2……N；
The processing unit, specifically for if it is determined that battery voltage value VBATHigher than the first setting voltage threshold VBATTHIt is and low In third setting voltage threshold VCV+ΔVBATWhen, determine initial voltage value as target voltage values in the following ways：
Wherein, the first setting voltage threshold VBATTHLess than third setting voltage threshold VCV+ΔVBAT。
In another aspect, the embodiment of the present invention additionally provides a kind of electronic equipment, including above-mentioned charging unit.
The present invention has the beneficial effect that：
An embodiment of the present invention provides a kind of charging method, device and electronic equipments, can receive wireless adapter transmitting Electric signal simultaneously generates alternating current, and by the alternating current be converted to direct current and by the voltage value of the direct current adjust to Target voltage values finally, are exported after being depressured to voltage value for the direct current of the target voltage values to battery.Namely It says, electric energy is converted by the way of decompression after rectification, may be such that the prime input voltage of corresponding charging unit Increase substantially, prime input current significantly reduces, so as to reduce the power attenuation of equiva lent impedance in charging circuit, reduce Fever and raising device security；And it since low current is relatively low to the performance requirement of electric energy receiving element, can also drop The hardware cost of low charging unit.
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, it can also be obtained according to these attached drawings other Attached drawing.
Fig. 1 show the structure diagram of the wireless charging circuit of the electronic equipment side of the prior art；
Fig. 2 show the step flow chart of the charging method in the embodiment of the present invention one；
Fig. 3 show the structural representation of the voltage-dropping type charge pump charging sub-circuit in the embodiment of the present invention one and embodiment two Figure；
The structure diagram of a kind of charging circuit that the charging method that Fig. 4 is shown in the embodiment of the present invention one is applicable in；
A kind of charging process flow for charging circuit that the charging method that Fig. 5 is shown in the embodiment of the present invention one is applicable in Figure；
Fig. 6 show the structure diagram of the charging unit in the embodiment of the present invention two；
Fig. 7 show another structure diagram of the charging unit 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：
The embodiment of the present invention one provides a kind of charging method, specifically, as shown in Fig. 2, it is the embodiment of the present invention one Described in method step flow chart, the method may include following steps：
Step 201：It receives the electric signal of wireless adapter transmitting and generates alternating current.
Step 202：The alternating current is converted into direct current.
Step 203：The voltage value of the direct current is adjusted to target voltage values.
Step 204：It is exported after being depressured to voltage value for the direct current of the target voltage values to battery.
That is, being converted by the way of decompression to electric energy after rectification, corresponding charging unit may be such that Prime input voltage increase substantially, prime input current significantly reduces, so as to reduce equiva lent impedance in charging circuit Power attenuation, reduce fever and improve device security；And since low current is to the performance requirement of electric energy receiving element It is relatively low, therefore can also reduce the hardware cost of charging unit.
Preferably, it can realize that step 201 receives the electric signal that wireless adapter emits and generates exchange by receiving coil Electricity；The electric current of prime input reduces, so that the performance requirement to receiving coil reduces, therefore lower-cost connect can be used Take-up circle reduces hardware cost.It should be noted that receiving coil matches with the electric energy transmitting coil in wireless adapter, And the electric signal of wireless adapter transmitting can be received based on the either type in electric induction, magnetic induction, magnetic resonance and electromagnetic wave, The present embodiment is not limited in any way herein.
Preferably, it can realize that the alternating current is converted to direct current, the realization side of rectifier bridge by step 202 by rectifier bridge Similarly to the prior art, details are not described herein for the present embodiment for formula.
Preferably, step 203 adjusts the voltage value of the direct current to target voltage values, may particularly include：According to electricity The charging status information in pond and circuit parameter information, determine the target voltage values；Wherein, charging status information includes battery electricity Pressure value or battery voltage value and charging current value.That is, it is adjusted by the voltage value of direct current to target voltage values When, it needs to determine the target voltage values of a setting according to the charging status information of battery and circuit parameter information first, so that The circuit based on setting is depressured the target voltage values of the setting and can obtain the required charging voltage that charges.
It should be noted that the size that it is directly the electric current that battery charges that the charging current value, which is,；In addition, in order to So that charging process control is more accurate, extends the time of large current charge as possible, improve charge efficiency, the battery voltage value The preferably voltage value of battery battery core.
Optionally, adjust the voltage value of the direct current can be by controller and decompression to target voltage values for step 203 Type Buck converters are realized；Specifically, target is determined according to the charging status information and circuit parameter information of battery by controller Voltage value, and corresponding control signal is sent to control voltage-dropping type Buck converters by the direct current to voltage-dropping type Buck converters The voltage value of electricity is adjusted to the target voltage values.The transfer efficiency of voltage-dropping type Buck converters and its input voltage and output electricity The voltage difference of the voltage difference correlation of pressure, input voltage and output voltage is smaller, and transfer efficiency is higher；Therefore, in battery electricity In the case that pressure value is certain, compared compared with the output terminal connection Buck charging circuits of the Buck converters of technology, in voltage-dropping type Using electric energy conversion is carried out by the way of being depressured after Buck converters, may be such that the output voltages of voltage-dropping type Buck converters compared with Height, the i.e. input voltage of voltage-dropping type Buck converters and the voltage difference of output voltage are smaller, turn so as to improve voltage-dropping type Buck The transfer efficiency of parallel operation further improves the efficiency of charging.
Still optionally further, it is described according to the charging status information of battery and circuit parameter information, determine the target electricity Pressure value, may particularly include：
If it is determined that battery voltage value VBATHigher than the first setting voltage threshold VBATTHAnd not higher than the second setting voltage threshold VCV-ΔVBATAnd charging current value IBATLess than goal-selling charging current value IBATSET, it is determined that enable to IBATIncreased mesh Mark voltage value VBOUT；
If it is determined that battery voltage value VBATHigher than the first setting voltage threshold VBATTHAnd not higher than the second setting voltage threshold VCV-ΔVBATAnd charging current value IBATWithin goal-selling charging current value range, it is determined that can realize that constant current is filled The target voltage values V of electricityBOUT；
If it is determined that battery voltage value VBATHigher than the second setting voltage threshold VCV-ΔVBATAnd set voltage threshold less than third VCV+ΔVBAT, and charging current value IBATHigher than default cut-off charging current value IBATEND, it is determined that it can realize constant-voltage charge Target voltage values VBOUT；
Wherein, the first setting voltage threshold VBATTHNot higher than the described second setting voltage threshold VCV-ΔVBAT, Δ VBATFor positive number.
It should be noted that the first setting voltage threshold VBATTHIt can flexibly be set according to actual use demand, preferably Ground, VBATTHIt may be configured as the lower threshold of the constant-current phase of battery charging process, such as 2.8V~3V；The second setting voltage Threshold value VCV-ΔVBATAnd third setting voltage threshold VCV+ΔVBATAlso it can flexibly be set according to actual use demand, it is preferable that VCVThe upper limit threshold of the constant-current phase of battery charging process is may be configured as, i.e. battery charging process enters constant pressure rank by constant-current phase The threshold value of section, such as 3.8V~4.6V；ΔVBATIt may be configured as a smaller voltage value, such as 1V.That is, battery charges Process may include three phases：Charging stage, constant-current phase and constant-voltage phase；In charging stage, it may be determined that target voltage values VBOUTSo that the size of charging current is gradually to goal-selling charging current value IBATSETIt (can flexibly be set according to actual use demand Put) it is close；In constant-current phase, the size of charging current is located at goal-selling charging current value range (can be according to actual use Demand is flexibly set) within after, it may be determined that so that the size of charging current target voltage values V stable as possibleBOUT；In constant pressure rank Section, after battery voltage value is sufficiently large, it may be determined that so that the target voltage values V of the size held stationary of cell voltageBOUT。
Still optionally further, it is described according to the charging status information of battery and circuit parameter information, determine the target electricity Pressure value, may particularly include：
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBAT<IBATSET-ΔI1, it is determined that VBOUT=V'BOUT+ΔV1；Wherein, V'BOUTThe target voltage values determining for the last time；
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBATSET-ΔI1≤IBAT<IBATSET-ΔI2, it is determined that VBOUT= V'BOUT+ΔV2；Wherein, Δ I1、ΔI2、ΔV1And Δ V2For positive number；Preferably, Δ I1>ΔI2, Δ V1>ΔV2；
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBATSET-ΔI2≤IBAT≤IBATSET+ΔI2, then V is kept firstBOUT It is constant, and perform following operate：When determining IBAT>IBATSET-ΔI3When, keep VBOUTIt is constant；When determining IBAT≤IBATSET-ΔI3 When, determine VBOUT=V'BOUT+ΔV2；Wherein, Δ I3For positive number；Preferably, Δ I1>ΔI3；
If it is determined that VCV-ΔVBAT<VBAT<VCV+ΔVBAT, and IBAT>IBATEND, it is determined that VBOUT=V'BOUT-ΔV2。
That is, in charging stage, it is preferable that determine that (charging current value is being set charging current value stabilization each Variable quantity in time span is not more than given threshold) after, however, it is determined that charging current value is much smaller than goal-selling charging current Value, then with the step-length of setting increase target voltage values so that charging current value gradually, promptly close to goal-selling charge electricity Flow valuve；If it is determined that charging current value close to goal-selling charging current value, then the smaller step-length increase target that can be set is electric Pressure value, so that charging current value gradually, smoothly reaches goal-selling charging current value.When charging process enters constant-current phase Later, however, it is determined that when charging current value is located within goal-selling charging current value range, then can keep target voltage values not Become；Battery voltage value with charging process can increase, and target voltage values are constant, therefore charging current value can gradually subtract It is small；After determining that charging current value is reduced to below the lower limit of goal-selling charging current value range, then it can set Smaller step-length increases target voltage values, by charging current value control within goal-selling charging current value range.When filling After electric process enters constant-current phase, the smaller step-length that can be set reduces target voltage values, so that the voltage value of battery is basic It remains unchanged, charging current value gradually reduces.
Preferably, output, can to battery after step 204 is depressured voltage value for the direct current of the target voltage values It specifically includes：
Voltage-dropping type charge pump charging sub-circuit based on a voltage-dropping type charge pump charging sub-circuit or more than two series connection It is exported after being depressured to voltage value for the direct current of the target voltage values to battery.
The structure diagram of sub-circuit, any voltage-dropping type charge pump as shown in figure 3, it charges for voltage-dropping type charge pump The sub-circuit that charges includes first switch group (including switch Q1 and switch Q2), second switch group includes switch Q3 and switch Q4), the One derided capacitors C1 and the second derided capacitors C2, any voltage-dropping type charge pump charging sub-circuit, for opening described the One switching group Q1 and Q2 closes second switch the group Q3 and Q4 so that the partial pressure electricity of the first derided capacitors C1 and second Hold C2 chargings, and the direct current for the voltage value that output voltage size is the first derided capacitors C1；And close described first Switching group Q1 and Q2 open second switch the group Q3 and Q4 so that the first derided capacitors C1 and the second derided capacitors C2 discharges, and the direct current for the voltage value that output voltage size is the first derided capacitors C1.
That is, for any voltage-dropping type charge pump charge sub-circuit, either the derided capacitors charging stage still Derided capacitors discharge regime, the size of the output voltage VO UT of any voltage-dropping type charge pump charging sub-circuit are equal to first The voltage value of derided capacitors C1, therefore, by adjusting duty ratio (the charging duration of derided capacitors and the charging duration of derided capacitors With the ratio between the summation of electric discharge duration), it can determine input voltage and the output of any voltage-dropping type charge pump charging sub-circuit The ratio between voltage, such as ratio are 2, i.e., the output voltage VO UT of described any voltage-dropping type charge pump charging sub-circuit is input voltage The 1/2 of VIN realizes decompression conversion.
Optionally, the series of the voltage-dropping type charge pump charging sub-circuit of series connection can flexibly be set according to actual use demand； Preferably, the series of the voltage-dropping type charge pump charging sub-circuit of series connection is more, and the prime input voltage of charging unit is higher, prime Input current is smaller, and therefore, the charging sub-circuit series connection of multilevel decompression type charge pump can further reduce equivalent resistance in charging circuit Anti- power attenuation improves the efficiency of electric energy conversion；In addition, it is realized when using voltage-dropping type Buck converters by the voltage of direct current When value is adjusted to target voltage values, the charging sub-circuit series connection of multilevel decompression type charge pump may be such that the defeated of voltage-dropping type Buck converters Enter the voltage difference smaller of voltage and output voltage, therefore, can further reduce the loss of voltage-dropping type Buck converters.
In addition, since there is no inductance in any voltage-dropping type charge pump charging sub-circuit, that is, it is not present by perceptual member The fever as caused by the equiva lent impedance of inductive element is also not present in coil loss caused by part and core loss；Therefore, with showing There are the Buck charging circuits in technology to compare, the energy conversion efficiency higher of voltage-dropping type charge pump charging sub-circuit, loss are lower, So as to can further improve the safety of charge efficiency and electronic equipment.
Still optionally further, the circuit parameter information may include the series of the voltage-dropping type charge pump charging sub-circuit of series connection N, the voltage conversion efficiency of any voltage-dropping type charge pump charging sub-circuitAnd any voltage-dropping type charge pump charging sub-circuit Input voltage and the ratio between output voltageIn it is any one or more；Wherein, N is positive integer more than or equal to 1, i= 1,2……N。
Correspondingly, in step 203, according to the charging status information of battery and circuit parameter information, the target is determined Voltage value may also include：
If it is determined that battery voltage value VBATHigher than the first setting voltage threshold VBATTHAnd less than third setting voltage threshold VCV+ ΔVBATWhen, determine initial voltage value as target voltage values in the following ways：Wherein, it is described First setting voltage threshold VBATTHLess than third setting voltage threshold VCV+ΔVBAT。
That is, when charging beginning, it can be first according to battery voltage value, the charging sub-circuit series connection of voltage-dropping type charge pump Series, the ratio between the input voltage of charging sub-circuit and output voltage and voltage conversion efficiency per level-one voltage-dropping type charge pump, Determine that the initial voltage value needed for charging, later can be in real time according to battery voltage value and charging current value as target voltage values Target voltage values are adjusted into Mobile state.
Optionally, the method may also include：If it is determined that battery voltage value VBATNot higher than the first setting voltage threshold VBATTHOr battery voltage value VBATHigher than the second setting voltage threshold VCV-ΔVBATAnd less than third setting voltage threshold VCV+ ΔVBATAnd charging current value IBATNot higher than default cut-off charging current value value IBATEND, then the alternating current is turned in step 202 It is changed to after direct current, the direct current is converted based on Buck charging circuits and exports to battery.
That is, (such as battery voltage value V before the charging stage of battery charging processBATIt charged not higher than battery The lower threshold of the constant-current phase of journey) or constant-voltage phase after (such as battery voltage value VBATNot less than battery charging process The upper limit threshold of constant-current phase, and charging current value is not higher than default cut-off charging current value value IBATEND), it needs to use low current When charging the battery, the prior art also can be used and charged the battery by Buck charging circuits, the present embodiment is herein It repeats no more.
It below will be by taking specific example as an example, to the applicable scene and steps flow chart of the charging method provided in this embodiment It is described in detail：
The charging method provided in this embodiment is applicable to charging circuit as shown in Figure 4, which can wrap Include receiving coil, rectifier bridge, voltage-dropping type Buck converters, voltage-dropping type charge pump charging circuit, Buck charging circuits and control Device, wherein：Receiving coil can be used for receiving the electric signal of wireless adapter transmitting and generate alternating current；Rectifier bridge can be used for institute It states alternating current and is converted to direct current；Voltage-dropping type Buck converters can be used for adjusting the voltage value of the direct current to target voltage Value；Voltage-dropping type charge pump charging circuit can be used for voltage value for the target voltage values direct current be depressured after export to Battery；Controller can be used for according to the charging status information of battery and circuit parameter information, determine the target voltage values；Buck Charging circuit can be used for converting the direct current that rectifier bridge exports and exporting to battery.The specific of the charging circuit was charged Journey can be as shown in Figure 5：
Step S1：Charging starts；
Step S2：Obtain battery voltage value VBAT, judge whether VBAT>VBATTH, wherein, VBATTHFor the first setting voltage threshold Value；If it is not, perform step S3；If so, perform step S4；
Step S3：It is charged based on Buck charging circuits, and is jumped to after charging duration reaches setting time length Step S2；
Step S4：Determine the initial output voltage value of voltage-dropping type Buck convertersWherein, N Charge the series of sub-circuit for the voltage-dropping type charge pump connected in voltage-dropping type charge pump charging circuit,For any voltage-dropping type electricity The voltage conversion efficiency of lotus pump charging sub-circuit,Input voltage and output for any voltage-dropping type charge pump charging sub-circuit The ratio between voltage, N are positive integer more than or equal to 1, i=1,2 ... N；
Step S5：With Δ V1Stepping improves the output voltage values V of voltage-dropping type Buck convertersBOUT；Wherein, Δ V1It is first Preset voltage value；
Step S6：Obtain charging current value IBAT, treat IBATStep S7 is performed after rising to stationary value；
Step S7：Judge whether IBATSET-ΔI1≤IBAT, wherein, IBATSETFor goal-selling charging current value, Δ I1It is One pre-set current value；If it is not, jump to step S5；If so, perform step S8；
Step S8：With Δ V2Stepping improves the output voltage values V of voltage-dropping type Buck convertersBOUT, Δ V2For the second default electricity Pressure value, Δ V1>ΔV2；
Step S9：Obtain charging current value IBAT, treat IBATStep S10 is performed after rising to stationary value；
Step S10：Judge whether IBATSET-ΔI2≤IBAT≤IBATSET+ΔI2, wherein Δ I2For the second pre-set current value, ΔI1>ΔI2；If it is not, jump to step S8；If so, perform step S11；
Step S11：Keep the output voltage values V of voltage-dropping type Buck convertersBOUTIt is constant；
Step S12：Obtain charging current value IBAT, treat IBAT≤IBATSET-ΔI3Afterwards, step 13 is performed；Wherein, Δ I3It is Three pre-set current values, Δ I1>ΔI3；
Step S13：With Δ V2Stepping improves the output voltage values V of voltage-dropping type Buck convertersBOUT；
Step S14：Judge whether VCV-ΔVBAT<VBAT<VCV+ΔVBAT, wherein, VCV-ΔVBATFor the second setting voltage threshold Value, VCV+ΔVBATVoltage threshold, and V are set for thirdBATTHNot higher than VCV-ΔVBAT, Δ VBATFor positive number；If it is not, jump to step Rapid S11；If so, perform step S15；
Step S15：Charging process enters constant pressure (CV) stage；
Step S16：With Δ V2Stepping reduces the output voltage values V of voltage-dropping type Buck convertersBOUT；
Step S17：Judge whether IBAT≤IBATEND, IBATENDFor default cut-off charging current value；If so, jump to step S19；If it is not, perform step S18；
Step S18：Treat VCV-ΔVBAT<VBAT<VCV+ΔVBATLater, step S16 is jumped to；
Step S19：It is charged based on Buck charging circuits；
Step S20：Charging terminates.
It should be noted that in charging process shown in Fig. 5, step S5~step S10 is charging stage, step S11 ~step S14 is constant-current phase, and step S15~step S18 is constant-voltage phase；Entire charging process shown in fig. 5, suitable for opening The voltage value of battery too low scene when beginning to charge；If the voltage of battery is more than the threshold value of setting, charging process when starting to charge up Also it can be directly entered constant-current phase or constant-voltage phase after step s4；If the voltage higher of battery, charging process also can be It directly performs step S19 after step S2 to charge based on Buck charging circuits, details are not described herein for the present embodiment.
In conclusion charging method provided in an embodiment of the present invention, can receive electric signal and the production of wireless adapter transmitting Raw alternating current, and the alternating current is converted into direct current and adjusts the voltage value of the direct current to target voltage values, Finally, it is exported after being depressured to voltage value for the direct current of the target voltage values to battery.That is, after rectification Electric energy is converted by the way of decompression, may be such that the prime input voltage of corresponding charging unit increases substantially, is preceding Grade input current significantly reduces, and so as to reduce the power attenuation of equiva lent impedance in charging circuit, reduces fever and improves Device security；And since low current is relatively low to the performance requirement of electric energy receiving element, it can also reduce charging unit Hardware cost.
In addition, voltage-dropping type charge pump charging that can be based on a voltage-dropping type charge pump charging sub-circuit or more than two series connection Output is to battery after sub-circuit is depressured voltage value for the direct current of the target voltage values, due to the voltage-dropping type charge There is no inductance in pump charging sub-circuit, i.e., there is no the coil loss as caused by inductive element and core losses, also do not deposit The fever caused by the equiva lent impedance as inductive element；Therefore, compared with Buck charging circuits of the prior art, voltage-dropping type electricity The energy conversion efficiency higher of lotus pump charging sub-circuit, loss are lower, are set so as to can further improve charge efficiency and electronics Standby safety.
Embodiment two：
Based on same inventive concept, the embodiment of the present invention two provides a kind of charging unit, specifically, as shown in fig. 6, Its structure diagram for charging unit described in the embodiment of the present invention two, the charging unit may include：
Electric energy receiving unit 601, for receiving the electric signal of wireless adapter transmitting and generating alternating current；
Rectification unit 602, for the alternating current to be converted to direct current；
Processing unit 603, for adjusting the voltage value of the direct current to target voltage values；
Be depressured charhing unit 604, for voltage value for the target voltage values direct current be depressured after export to Battery.
That is, being converted by the way of decompression to electric energy after rectification, the prime of charging unit may be such that Input voltage increases substantially, prime input current significantly reduces, so as to reduce the power of equiva lent impedance in charging circuit Loss reduces fever and improves device security；And since low current is relatively low to the performance requirement of electric energy receiving element, Therefore the hardware cost of charging unit can also be reduced.
Optionally, the electric energy receiving unit 601 can be realized by receiving coil, in receiving coil and wireless adapter Electric energy transmitting coil matches, and can be received based on the either type in electric induction, magnetic induction, magnetic resonance and electromagnetic wave wireless The electric signal of adapter transmitting, the present embodiment are not limited in any way herein；The rectification unit 602 can be realized by rectifier bridge, Similarly to the prior art, details are not described herein for the present embodiment for specific implementation.
Preferably, the processing unit 603 can be specifically used for being believed according to the charging status information and circuit parameter of battery Breath, determines the target voltage values；Wherein, charging status information includes battery voltage value or battery voltage value and charging electricity Flow valuve.That is, the processing unit 603 needs root first when adjusting the voltage value of direct current to target voltage values The target voltage values of a setting are determined according to the charging status information and circuit parameter information of battery, so that based on the decompression Charhing unit 604, which is depressured the target voltage values of the setting, can obtain the required charging voltage that charges.
Still optionally further, the processing unit 603 may include controller and voltage-dropping type Buck converters；Specifically, may be used Target voltage values are determined according to the charging status information and circuit parameter information of battery, and convert to voltage-dropping type Buck by controller Device sends corresponding control signal so that voltage-dropping type Buck converters to be controlled to adjust the voltage value of the direct current to the target Voltage value.
The transfer efficiency of voltage-dropping type Buck converters and the voltage difference correlation of its input voltage and output voltage, input electricity Pressure is smaller with the voltage difference of output voltage, and transfer efficiency is higher；Therefore, in the case where battery voltage value is certain, compared with The output terminal connection Buck charging circuits of the Buck converters of technology are compared, using decompression after voltage-dropping type Buck converters Mode carries out electric energy conversion, may be such that the output voltage of voltage-dropping type Buck converters is higher, i.e., voltage-dropping type Buck converters is defeated The voltage difference for entering voltage and output voltage is smaller, so as to improve the transfer efficiency of voltage-dropping type Buck converters, further improves The efficiency of charging.
Still optionally further, the processing unit 603 can be specifically used for if it is determined that battery voltage value VBATIt is set higher than first Constant voltage threshold value VBATTHAnd not higher than the second setting voltage threshold VCV-ΔVBATAnd charging current value IBATIt is filled less than goal-selling Electric current value IBATSET, it is determined that enable to IBATIncreased target voltage values VBOUT；If it is determined that battery voltage value VBATHigher than One setting voltage threshold VBATTHAnd not higher than the second setting voltage threshold VCV-ΔVBATAnd charging current value IBATPositioned at default mesh It marks within charging current value range, it is determined that can realize the target voltage values V of constant-current chargeBOUT；If it is determined that cell voltage Value VBATHigher than the second setting voltage threshold VCV-ΔVBATAnd less than third setting voltage threshold VCV+ΔVBAT, and charging current value IBATHigher than default cut-off charging current value IBATEND, it is determined that it can realize the target voltage values V of constant-voltage chargeBOUT；Wherein, institute State the first setting voltage threshold VBATTHNot higher than the described second setting voltage threshold VCV-ΔVBAT, Δ VBATFor positive number.
It should be noted that the first setting voltage threshold VBATTHIt can flexibly be set according to actual use demand, preferably Ground, VBATTHIt may be configured as the lower threshold of the constant-current phase of battery charging process, such as 2.8V~3V；The second setting voltage Threshold value VCV-ΔVBATAnd third setting voltage threshold VCV+ΔVBATAlso it can flexibly be set according to actual use demand, it is preferable that VCVThe upper limit threshold of the constant-current phase of battery charging process is may be configured as, i.e. battery charging process enters constant pressure rank by constant-current phase The threshold value of section, such as 3.8V~4.6V；ΔVBATIt may be configured as a smaller voltage value, such as 1V.That is, battery charges Process may include three phases：Charging stage, constant-current phase and constant-voltage phase；In charging stage, the processing unit 603 can Determine target voltage values VBOUTSo that the size of charging current is gradually to goal-selling charging current value IBATSETIt (can be according to reality Use demand is flexibly set) it is close；In constant-current phase, the size of charging current is located at goal-selling charging current value range After within (can flexibly be set according to actual use demand), the processing unit 603 may be determined so that the size of charging current is use up Measure stable target voltage values VBOUT；In constant-voltage phase, after battery voltage value is sufficiently large, the processing unit 603 can determine So that the target voltage values V of the size held stationary of cell voltageBOUT。
Still optionally further, the processing unit 603, can be specifically used for：
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBAT<IBATSET-ΔI1, it is determined that VBOUT=V'BOUT+ΔV1；Wherein, V'BOUTThe target voltage values determining for the last time；
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBATSET-ΔI1≤IBAT<IBATSET-ΔI2, it is determined that VBOUT= V'BOUT+ΔV2；Wherein, Δ I1、ΔI2、ΔV1And Δ V2For positive number；Preferably, Δ I1>ΔI2, Δ V1>ΔV2；
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBATSET-ΔI2≤IBAT≤IBATSET+ΔI2, then V is kept firstBOUT It is constant, and perform following operate：When determining IBAT>IBATSET-ΔI3When, keep VBOUTIt is constant；When determining IBAT≤IBATSET-ΔI3 When, determine VBOUT=V'BOUT+ΔV2；Wherein, Δ I3For positive number；Preferably, Δ I1>ΔI3；
If it is determined that VCV-ΔVBAT<VBAT<VCV+ΔVBAT, and IBAT>IBATEND, it is determined that VBOUT=V'BOUT-ΔV2。
That is, in charging stage, it is preferable that determine that (charging current value is being set charging current value stabilization each Variable quantity in time span is not more than given threshold) after, the processing unit 603 is if it is determined that charging current value is much smaller than in advance If target charge current value, then target voltage values are increased with the step-length of setting, so that charging current value gradually, promptly approaches Goal-selling charging current value；If it is determined that charging current value close to goal-selling charging current value, then what can be set is smaller Step-length increases target voltage values, so that charging current value gradually, smoothly reaches goal-selling charging current value.When charging Journey enters after constant-current phase, and the processing unit 603 is if it is determined that charging current value is located at goal-selling charging current value model When within enclosing, then target voltage values can be kept constant；Battery voltage value with charging process can increase, and target voltage It is worth constant, therefore charging current value can be gradually reduced；When determining that charging current value is reduced to goal-selling charging current value model After below the lower limit enclosed, then the smaller step-length that can be set increases target voltage values, by charging current value control default Within target charge current value range.After charging process enters constant-current phase, the processing unit 603 can set compared with Small step-length reduces target voltage values, so that the voltage value of battery is held essentially constant, charging current value gradually reduces.
Still optionally further, the decompression charhing unit 604 can be specifically used for based on voltage-dropping type charge pump charging Circuit or the voltage-dropping type charge pump charging sub-circuit of more than two series connection to voltage value for the target voltage values direct current into It is exported after row decompression to battery.
The structure diagram of sub-circuit, any voltage-dropping type charge pump as shown in figure 3, it charges for voltage-dropping type charge pump The sub-circuit that charges includes first switch group (including switch Q1 and switch Q2), second switch group includes switch Q3 and switch Q4), the One derided capacitors C1 and the second derided capacitors C2, any voltage-dropping type charge pump charging sub-circuit, for opening described the One switching group Q1 and Q2 closes second switch the group Q3 and Q4 so that the partial pressure electricity of the first derided capacitors C1 and second Hold C2 chargings, and the direct current for the voltage value that output voltage size is the first derided capacitors C1；And close described first Switching group Q1 and Q2 open second switch the group Q3 and Q4 so that the first derided capacitors C1 and the second derided capacitors C2 discharges, and the direct current for the voltage value that output voltage size is the first derided capacitors C1.
That is, for any voltage-dropping type charge pump charge sub-circuit, either the derided capacitors charging stage still Derided capacitors discharge regime, the size of the output voltage VO UT of any voltage-dropping type charge pump charging sub-circuit are equal to first The voltage value of derided capacitors C1, therefore, by adjusting duty ratio (the charging duration of derided capacitors and the charging duration of derided capacitors With the ratio between the summation of electric discharge duration), it can determine input voltage and the output of any voltage-dropping type charge pump charging sub-circuit The ratio between voltage, such as ratio are 2, i.e., the output voltage VO UT of described any voltage-dropping type charge pump charging sub-circuit is input voltage The 1/2 of VIN realizes decompression conversion.
Optionally, the series of voltage-dropping type charge pump charging sub-circuit connected in the decompression charhing unit 604 can basis Actual use demand is flexibly set；Preferably, the series of the voltage-dropping type charge pump charging sub-circuit of series connection is more, charging unit Prime input voltage is higher, prime input current is smaller, and therefore, the charging sub-circuit series connection of multilevel decompression type charge pump can be further The power attenuation of equiva lent impedance in charging circuit is reduced, improves the efficiency of electric energy conversion；In addition, it is converted when using voltage-dropping type Buck When device realization adjusts the voltage value of direct current to target voltage values, the charging sub-circuit series connection of multilevel decompression type charge pump may be such that The input voltage of voltage-dropping type Buck converters and the voltage difference smaller of output voltage, therefore, can further reduce voltage-dropping type The loss of Buck converters.
In addition, since there is no inductance in any voltage-dropping type charge pump charging sub-circuit, that is, it is not present by perceptual member The fever as caused by the equiva lent impedance of inductive element is also not present in coil loss caused by part and core loss；Therefore, with showing There are the Buck charging circuits in technology to compare, the energy conversion efficiency higher of voltage-dropping type charge pump charging sub-circuit, loss are lower, So as to can further improve the safety of charge efficiency and electronic equipment.
Still optionally further, the circuit parameter information may include the series of the voltage-dropping type charge pump charging sub-circuit of series connection N, the voltage conversion efficiency of any voltage-dropping type charge pump charging sub-circuitAnd any voltage-dropping type charge pump charging sub-circuit Input voltage and the ratio between output voltageIn it is any one or more；Wherein, N is positive integer more than or equal to 1, i= 1,2……N；
The processing unit 603, it may also be used for if it is determined that battery voltage value VBATHigher than the first setting voltage threshold VBATTHAnd Less than third setting voltage threshold VCV+ΔVBATWhen, determine initial voltage value as target voltage values in the following ways：Wherein, the first setting voltage threshold VBATTHLess than third setting voltage threshold VCV+ ΔVBAT。
That is, when charging beginning, the processing unit 603 can be first according to battery voltage value, voltage-dropping type charge The series of pump charging sub-circuit series connection, per level-one voltage-dropping type charge pump the ratio between the input voltage of charging sub-circuit and output voltage with And voltage conversion efficiency, determine that the initial voltage value needed for charging, later can be in real time according to cell voltage as target voltage values Value and charging current value adjust target voltage values into Mobile state.
Preferably, as shown in fig. 7, the charging unit may also include Buck charhing units 701, the processing unit 603, it may also be used for if it is determined that battery voltage value VBATNot higher than the first setting voltage threshold VBATTHOr battery voltage value VBATIt is high In the second setting voltage threshold VCV-ΔVBATAnd less than third setting voltage threshold VCV+ΔVBATAnd charging current value IBATIt is not high In default cut-off charging current value value IBATEND, then direct current that the Buck charhing units 701 is controlled to export rectification unit 602 Electricity is exported after being adjusted to the battery.
That is, (such as battery voltage value V before the charging stage of battery charging processBATIt charged not higher than battery The lower threshold of the constant-current phase of journey) or constant-voltage phase after (such as battery voltage value VBATNot less than battery charging process The upper limit threshold of constant-current phase, and charging current value is not higher than default cut-off charging current value value IBATEND), it needs to use low current When charging the battery, Buck charhing units 701 can be based on and carry out electric energy conversion and charge the battery, Buck chargings are single The realization of member 701 can refer to the prior art, and details are not described herein for the present embodiment.
The specific charging flow of the charging unit can be found in the related content in embodiment of the method, and the present embodiment is herein not It repeats again.
In conclusion charging unit provided in an embodiment of the present invention, it may include：Electric energy receiving unit, it is wireless for receiving The electric signal of adapter transmitting simultaneously generates alternating current；Rectification unit, for the alternating current to be converted to direct current；Processing is single Member, for adjusting the voltage value of the direct current to target voltage values；And decompression charhing unit, for being to voltage value The direct current of the target voltage values is exported after being depressured to battery.That is, after rectification by the way of decompression Electric energy is converted, may be such that the prime input voltage of charging unit increases substantially, prime input current significantly reduces, So as to reducing the power attenuation of equiva lent impedance in charging circuit, reducing fever and improving device security；And due to small Electric current is relatively low to the performance requirement of electric energy receiving element, therefore can also reduce the hardware cost of charging unit.
In addition, voltage-dropping type charge pump charging that can be based on a voltage-dropping type charge pump charging sub-circuit or more than two series connection Output is to battery after sub-circuit is depressured voltage value for the direct current of the target voltage values, due to the voltage-dropping type charge There is no inductance in pump charging sub-circuit, i.e., there is no the coil loss as caused by inductive element and core losses, also do not deposit The fever caused by the equiva lent impedance as inductive element；Therefore, compared with Buck charging circuits of the prior art, voltage-dropping type electricity The energy conversion efficiency higher of lotus pump charging sub-circuit, loss are lower, are set so as to can further improve charge efficiency and electronics Standby safety.
In addition, based on same inventive concept, the embodiment of the present invention additionally provides a kind of electronic equipment, the electronic equipment Including above-mentioned charging unit.
Furthermore, it is necessary to explanation, any number of elements in drawing and description be used to example and it is unrestricted and Any name is only used for distinguishing, without any restrictions meaning.
It will be understood by those skilled in the art that the embodiment of the present invention can be provided as method, apparatus (equipment) or computer journey Sequence product.Therefore, in terms of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and hardware The form of embodiment.Moreover, the calculating for wherein including computer usable program code in one or more can be used in the present invention The computer program that machine usable storage medium is implemented on (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) The form of product.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow chart of device (equipment) and computer program product And/or block diagram describes.It should be understood that each flow in flowchart and/or the block diagram can be realized by computer program instructions And/or the flow in box and flowchart and/or the block diagram and/or the combination of box.These computer programs can be provided to refer to The processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is enabled to generate One machine so that the instruction generation performed by computer or the processor of other programmable data processing devices is used to implement The device of function specified in one flow of flow chart or multiple flows and/or one box of block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that the instruction generation being stored in the computer-readable memory includes referring to Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or The function of being specified in multiple boxes.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted Series of operation steps are performed on calculation machine or other programmable devices to generate computer implemented processing, so as in computer or The instruction offer performed on other programmable devices is used to implement in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation Property concept, then additional changes and modifications may be made to these embodiments.So appended claims be intended to be construed to include it is excellent It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims (13)

1. a kind of charging method, which is characterized in that the method includes：
It receives the electric signal of wireless adapter transmitting and generates alternating current；
The alternating current is converted into direct current；
The voltage value of the direct current is adjusted to target voltage values；
It is exported after being depressured to voltage value for the direct current of the target voltage values to battery.
2. charging method as described in claim 1, which is characterized in that the voltage value by the direct current is adjusted to target Voltage value specifically includes：According to the charging status information of battery and circuit parameter information, the target voltage values are determined；Wherein, Charging status information includes battery voltage value or battery voltage value and charging current value.
3. charging method as claimed in claim 2, which is characterized in that described to be joined according to the charging status information and circuit of battery Number information, determines the target voltage values, specifically includes：
If it is determined that battery voltage value VBATHigher than the first setting voltage threshold VBATTHAnd not higher than the second setting voltage threshold VCV-Δ VBATAnd charging current value IBATLess than goal-selling charging current value IBATSET, it is determined that enable to IBATIncreased target electricity Pressure value VBOUT；
If it is determined that battery voltage value VBATHigher than the first setting voltage threshold VBATTHAnd not higher than the second setting voltage threshold VCV-Δ VBATAnd charging current value IBATWithin goal-selling charging current value range, it is determined that can realize constant-current charge Target voltage values VBOUT；
If it is determined that battery voltage value VBATHigher than the second setting voltage threshold VCV-ΔVBATAnd less than third setting voltage threshold VCV+ ΔVBAT, and charging current value IBATHigher than default cut-off charging current value IBATEND, it is determined that it can realize the target of constant-voltage charge Voltage value VBOUT；
Wherein, the first setting voltage threshold VBATTHNot higher than the described second setting voltage threshold VCV-ΔVBAT, Δ VBATFor just Number.
4. charging method as claimed in claim 3, which is characterized in that described to be joined according to the charging status information and circuit of battery Number information, determines the target voltage values, specifically includes：
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBAT<IBATSET-ΔI1, it is determined that VBOUT=V'BOUT+ΔV1；Wherein, V'BOUTThe target voltage values determining for the last time；
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBATSET-ΔI1≤IBAT<IBATSET-ΔI2, it is determined that VBOUT=V'BOUT+Δ V2；Wherein, Δ I1、ΔI2、ΔV1And Δ V2For positive number；
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBATSET-ΔI2≤IBAT≤IBATSET+ΔI2, then V is kept firstBOUTIt is constant, And perform following operate：When determining IBAT>IBATSET-ΔI3When, keep VBOUTIt is constant；When determining IBAT≤IBATSET-ΔI3When, really Determine VBOUT=V'BOUT+ΔV2；Wherein, Δ I3For positive number；
If it is determined that VCV-ΔVBAT<VBAT<VCV+ΔVBAT, and IBAT>IBATEND, it is determined that VBOUT=V'BOUT-ΔV2。
5. charging method as claimed in claim 2, which is characterized in that described to direct current of the voltage value for the target voltage values Output is specifically included to battery after electricity is depressured：
Voltage-dropping type charge pump based on a voltage-dropping type charge pump charging sub-circuit or more than two series connection charges sub-circuit to electricity Pressure value is exported after being depressured for the direct current of the target voltage values to battery；
Wherein, any voltage-dropping type charge pump charging sub-circuit includes first switch group, second switch group, the first derided capacitors And second derided capacitors, any voltage-dropping type charge pump charging sub-circuit for opening the first switch group, close institute State second switch group so that first derided capacitors and the charging of the second derided capacitors, and output voltage size is described the The direct current of the voltage value of one derided capacitors；And the first switch group is closed, open the second switch group so that institute The first derided capacitors and the electric discharge of the second derided capacitors are stated, and output voltage size is the voltage value of first derided capacitors Direct current.
6. charging method as claimed in claim 5, which is characterized in that the circuit parameter information includes the voltage-dropping type electricity of series connection The series N of lotus pump charging sub-circuit, the voltage conversion efficiency of any voltage-dropping type charge pump charging sub-circuitAnd any drop The ratio between input voltage and output voltage of die mould charge pump charging sub-circuitIn it is any one or more；Wherein, N is big In the positive integer equal to 1, i=1,2 ... N；
It is described according to the charging status information of battery and circuit parameter information, determine the target voltage values, specifically include：
If it is determined that battery voltage value VBATHigher than the first setting voltage threshold VBATTHAnd less than third setting voltage threshold VCV+ΔVBAT When, determine initial voltage value as target voltage values in the following ways：
Wherein, the first setting voltage threshold VBATTHLess than third setting voltage threshold VCV+ΔVBAT。
7. a kind of charging unit, which is characterized in that including：
Electric energy receiving unit, for receiving the electric signal of wireless adapter transmitting and generating alternating current；
Rectification unit, for the alternating current to be converted to direct current；
Processing unit, for adjusting the voltage value of the direct current to target voltage values；
Charhing unit is depressured, for output after being depressured to voltage value for the direct current of the target voltage values to battery.
8. charging unit as claimed in claim 7, which is characterized in that the processing unit, specifically for filling according to battery Electricity condition information and circuit parameter information, determine the target voltage values；Wherein, charging status information includes battery voltage value, Or battery voltage value and charging current value.
9. charging unit as claimed in claim 8, which is characterized in that the processing unit, specifically for if it is determined that battery is electric Pressure value VBATHigher than the first setting voltage threshold VBATTHAnd not higher than the second setting voltage threshold VCV-ΔVBATAnd charging current value IBATLess than goal-selling charging current value IBATSET, it is determined that enable to IBATIncreased target voltage values VBOUT；It is if it is determined that electric Cell voltage value VBATHigher than the first setting voltage threshold VBATTHAnd not higher than the second setting voltage threshold VCV-ΔVBATAnd charging electricity Flow valuve IBATWithin goal-selling charging current value range, it is determined that can realize the target voltage values of constant-current charge VBOUT；If it is determined that battery voltage value VBATHigher than the second setting voltage threshold VCV-ΔVBATAnd less than third setting voltage threshold VCV+ ΔVBAT, and charging current value IBATHigher than default cut-off charging current value IBATEND, it is determined that it can realize the target of constant-voltage charge Voltage value VBOUT；Wherein, the first setting voltage threshold VBATTHNot higher than the described second setting voltage threshold VCV-ΔVBAT, Δ VBATFor positive number.
10. charging unit as claimed in claim 9, which is characterized in that the processing unit is specifically used for：
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBAT<IBATSET-ΔI1, it is determined that VBOUT=V'BOUT+ΔV1；Wherein, V'BOUTThe target voltage values determining for the last time；
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBATSET-ΔI1≤IBAT<IBATSET-ΔI2, it is determined that VBOUT=V'BOUT+Δ V2；Wherein, Δ I1、ΔI2、ΔV1And Δ V2For positive number；
If it is determined that VBATTH<VBAT≤VCV-ΔVBAT, and IBATSET-ΔI2≤IBAT≤IBATSET+ΔI2, then V is kept firstBOUTIt is constant, And perform following operate：When determining IBAT>IBATSET-ΔI3When, keep VBOUTIt is constant；When determining IBAT≤IBATSET-ΔI3When, really Determine VBOUT=V'BOUT+ΔV2；Wherein, Δ I3For positive number；
If it is determined that VCV-ΔVBAT<VBAT<VCV+ΔVBAT, and IBAT>IBATEND, it is determined that VBOUT=V'BOUT-ΔV2。
11. charging unit as claimed in claim 8, which is characterized in that the decompression charhing unit, specifically for being based on one Voltage-dropping type charge pump charging sub-circuit or the voltage-dropping type charge pump charging sub-circuit of more than two series connection are the mesh to voltage value The direct current of mark voltage value is exported after being depressured to battery；
Wherein, any voltage-dropping type charge pump charging sub-circuit includes first switch group, second switch group, the first derided capacitors And second derided capacitors, any voltage-dropping type charge pump charging sub-circuit for opening the first switch group, close institute State second switch group so that first derided capacitors and the charging of the second derided capacitors, and output voltage size is described the The direct current of the voltage value of one derided capacitors；And the first switch group is closed, open the second switch group so that institute The first derided capacitors and the electric discharge of the second derided capacitors are stated, and output voltage size is the voltage value of first derided capacitors Direct current.
12. charging unit as claimed in claim 11, which is characterized in that the circuit parameter information includes the voltage-dropping type of series connection The series N of charge pump charging sub-circuit, the voltage conversion efficiency of any voltage-dropping type charge pump charging sub-circuitIt is and any The ratio between input voltage and output voltage of voltage-dropping type charge pump charging sub-circuitIn it is any one or more；Wherein, N is Positive integer more than or equal to 1, i=1,2 ... N；
The processing unit, specifically for if it is determined that battery voltage value VBATHigher than the first setting voltage threshold VBATTHAnd less than the Three setting voltage threshold VCV+ΔVBATWhen, determine initial voltage value as target voltage values in the following ways：
Wherein, the first setting voltage threshold VBATTHLess than third setting voltage threshold VCV+ΔVBAT。
13. a kind of electronic equipment, which is characterized in that including any charging unit of claim 7~12.
CN201710642947.6A 2017-07-31 2017-07-31 A kind of charging method, device and electronic equipment Pending CN108233453A (en)

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Application publication date: 20180629