CN106786843B - A kind of method of adjustment and system, electric terminal of charging current - Google Patents
A kind of method of adjustment and system, electric terminal of charging current Download PDFInfo
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- CN106786843B CN106786843B CN201611060173.8A CN201611060173A CN106786843B CN 106786843 B CN106786843 B CN 106786843B CN 201611060173 A CN201611060173 A CN 201611060173A CN 106786843 B CN106786843 B CN 106786843B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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Abstract
The present invention discloses the method for adjustment and system, electric terminal of a kind of charging current.Wherein, method of adjustment includes: terminal when being charged using charger to charging module, obtains the current charging current and present input voltage of charging module, wherein charging current is stepped up to set step-length；Using current charging current and present input voltage, the correlation of present load regulation is calculated；Using the correlation of present load regulation, judge whether charger overloads；If charger overloads, current charging current is subtracted to the pairs of maximum charging current values that charging module permission is set as after setting step-length；If charger nonoverload, increase current charging current to set step-length, and re-execute above-mentioned steps.By the above-mentioned means, the present invention can detect the practical charging ability of charger, charger is charged with safer and more effective electric current to terminal.
Description
Technical field
The present invention relates to the methods of adjustment and system of charging technique field more particularly to a kind of charging current, electric terminal.
Background technique
The load capacity of charger is irregular at present, therefore terminal is needed when being charged using different types of charger
The practical charging ability of charger is detected, to use the maximum output current of charger to charge.Generally use a lower section
Method is detected: being gradually increased charging current, is then detected the output voltage of charger, when the output voltage of charger is lower than door
When voltage limit, charging current corresponding to the output voltage is considered as maximum output current.Terminal is with charging current realization
Charging.
But in place of above method Shortcomings: if threshold voltage setting is excessively high, charging current is less than normal, leads to charger not
Maximum charging ability is played, charge efficiency is lower；If threshold voltage setting is too low, charging current is excessive, causes to charge
Device is in overload, reduces the reliability and service life of charger.
Summary of the invention
The present invention provides a kind of method of adjustment of charging current, the adjustment system of charging current and electric terminal, with reality
When being charged now by charger to terminal, the practical charging ability of charger is detected, enables charger with safer
Effective electric current charges to terminal.
To achieve the above object, the present invention provides a kind of method of adjustment of charging current, the method for adjustment of the charging current
It include: terminal when being charged using charger to charging module, current charging current and the current input for obtaining charging module are electric
Pressure, wherein charging current is stepped up with setting step-length；Using current charging current and present input voltage, it is calculated and works as
The correlation of preceding load regulation；Using the correlation of present load regulation, judge whether charger overloads；If charger mistake
It carries, then current charging current is subtracted to the pairs of maximum charging current values for being set as charging module permission after setting step-length；If charger
Nonoverload increases current charging current to set step-length, and re-executes above-mentioned steps.
Wherein, using current charging current and present input voltage, the correlation of present load regulation is calculated, into
One step includes: to utilize formula V0-V1=﹣ (I0-I1)×B0The correlation B of present load regulation is calculated0, wherein I0For
Current charging current, V0For present input voltage, I1For any charging current less than setting charging current, V1For I1It is corresponding
Input voltage.
Wherein, using the correlation of present load regulation, judge whether charger overloads, further comprise: judgement is worked as
Whether the correlation of preceding load regulation is greater than first with reference to correlation, wherein first is less than setting charging with reference to correlation
A times of average value between the correlation of the corresponding load regulation of each charging current of electric current, and a is greater than 1；If so, sentencing
Determine charger overload；If it is not, then further judging whether current charging voltage is less than setting charging voltage；In current charging voltage
When less than setting charging voltage, charger overload is determined；When current charging voltage is not less than setting charging voltage, charging is determined
Device nonoverload.
Wherein, using the correlation of present load regulation, judge whether charger overloads, further comprise: current
When the correlation of load regulation is greater than first with reference to correlation, the correlation and first for judging present load regulation refer to phase
Whether the difference between the value of pass is greater than a times of the first reference correlation and second with reference to the difference between correlation, wherein first
The average value being less than with reference to correlation between the correlation of the corresponding load regulation of each charging current of setting charging current,
Second is less than between the correlation of the corresponding load regulation of each charging current of setting charging current most with reference to correlation
Small value, a are greater than 1；If so, determining charger overload；If it is not, then further judging whether current charging voltage is less than setting and fills
Piezoelectric voltage；When current charging voltage is less than setting charging voltage, charger overload is determined；It is not less than in current charging voltage and sets
When determining charging voltage, charger nonoverload is determined.
Wherein, the correlation of load regulation is load regulation and charger to the equivalent impedance between charging module
With.
To achieve the above object, the present invention provides a kind of adjustment system of charging current, the adjustment system of the charging current
Include: acquisition module, for terminal when charging using charger to charging module, obtains the current charging current of charging module
And present input voltage, wherein charging current is stepped up with setting step-length；Computing module, for utilizing current charging current
And present input voltage, the correlation of present load regulation is calculated；Judgment module, for utilizing present load regulation
Correlation, judge whether charger overloads；Setup module, for current charging current being subtracted and is set in charger overload
The pairs of maximum charging current values of charging module permission is set as after fixed step size；Increase module, is used in charger nonoverload, to set
Fixed step size increases current charging current.
Wherein, computing module utilizes formula V0-V1=﹣ (I0-I1)×B0The correlation of present load regulation is calculated
B0, wherein I0For current charging current, V0For present input voltage, I1For any charging current less than setting charging current, V1
For I1Corresponding input voltage.
Wherein, judgment module further comprises: the first judging unit, for judging that the correlation of present load regulation is
It is no to be greater than first with reference to correlation, wherein each charging current that the first reference correlation is less than setting charging current is corresponding
A times of average value between the correlation of load regulation, and a is greater than 1；Second judgment unit, for being adjusted in present load
When the correlation of rate is no more than the first reference correlation, judge whether current charging voltage is less than setting charging voltage.
Wherein, judgment module further comprises: the first judging unit, for being greater than in the correlation of present load regulation
When the first reference correlation, whether the correlation and first for judging present load regulation are greater than with reference to the difference between correlation
The first of a times is with reference to correlation and second with reference to the difference between correlation, wherein first, which is less than setting with reference to correlation, fills
Average value between the correlation of the corresponding load regulation of each charging current of electric current, the second reference correlation, which is less than, to be set
Determine the minimum value between the correlation of the corresponding load regulation of each charging current of charging current, a is greater than 1；Second judgement is single
Member, for referring to correlation no more than first with reference to the difference between correlation in the correlation of present load regulation and first
When referring to the difference between correlation second, judge whether current charging voltage is less than setting charging voltage.
To achieve the above object, the present invention provides: a kind of electric terminal, the electric terminal include: control circuit；Successively connect
Charging interface, charging circuit and the battery connect, wherein control circuit and charging circuit couple；Wherein, control circuit is charging
When device charges to charging circuit, executes following movement: obtaining the current charging current and present input voltage of charging circuit,
In, charging current is stepped up with setting step-length；Using current charging current and present input voltage, present load is calculated
The correlation of regulation；Using the correlation of present load regulation, judge whether charger overloads；In charger overload,
Adjustment current value is obtained after current charging current is subtracted setting step-length, is set as the maximum charging current of charging circuit permission
Value；In charger nonoverload, charging circuit is controlled to set step-length and increases current charging current.
In the method for adjustment of charging current of the present invention, terminal is led to when being charged using charger to its charging module
The current charging current and current charging voltage for obtaining charging module are crossed, the correlation of present load regulation is calculated, to judge
The working condition of charger, to detect the practical charging ability of charger, so that charger is with safer effective charging electricity
Stream is to terminal charge, to avoid the problem that causing charger to overload because charging current is excessive, also can avoid because of charging current mistake
Small the problem of causing charging ability to waste.
Detailed description of the invention
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 described, it should be apparent that, drawings in the following description are some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, other may further be obtained according to these attached drawings
Attached drawing.Wherein:
Fig. 1 is the flow diagram of the method for adjustment first embodiment of charging current of the present invention；
Fig. 2 is the structural schematic diagram that charger charges to terminal；
Fig. 3 is the flow diagram of the method for adjustment second embodiment of charging current of the present invention；
Fig. 4 is the flow diagram of the method for adjustment 3rd embodiment of charging current of the present invention；
Fig. 5 is the structural schematic diagram of the adjustment system first embodiment of charging current of the present invention；
Fig. 6 is the structural schematic diagram of the adjustment system second embodiment of charging current of the present invention；
Fig. 7 is the structural schematic diagram of the adjustment system 3rd embodiment of charging current of the present invention；
Fig. 8 is the structural schematic diagram of one embodiment of electric terminal of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, Fig. 1 is the flow diagram of the method for adjustment first embodiment of charging current of the present invention.This implementation
The method of adjustment of charging current of example includes:
S10: terminal obtains the current charging current of charging module and current when charging using charger to charging module
Input voltage, wherein charging current is stepped up with setting step-length.
In this step S10, terminal and charger are connected with each other, and charger charges to the charging module in terminal,
It is the structural schematic diagram that charger charges to terminal referring particularly to Fig. 2, Fig. 2.
Wherein, charger 20 is connected to a certain power supply, which can provide alternating current or direct current, and electric energy passes through charging
Device 20 and charging cable 21 are transferred to terminal 22.Charger 20 charges to terminal 22 with suitable electric current, in terminal 22, fills
Electric module 220 is further adapted to charging process, is charged with suitable current versus cell 221.Terminal 22 is that can fill
Electric equipment can be mobile phone, plate, but be not limited only to this.
When charger 20 charges to terminal 22, the output electric current I and output voltage V of charger 20outRelationship can be with
It is indicated by formula (1):
Vout=V-I × K ... (1)
Wherein, VoutFor the actual output voltage after 20 bringing onto load of charger (terminal)；V is the nominal voltage of charger 20；
I is the output electric current of charger 20, the i.e. charging current of terminal 22, can be detected and be obtained by the adjustment system 22 of charging current；K
For load regulation, and the variation of K value is related to the working condition of charger, specifically, is in nonoverload state in charger
When work, K value is varied less；When charger is in overload work, the variation of K value increases, and overloads more serious, K
It is worth bigger.
The input voltage V of charging module 220inWith the output voltage V of charger 20outRelationship can be by formula (2) table
Show:
Vin=Vout- I × R ... (2)
Wherein, VinFor the input voltage of charging module 220, ADC (Analog-to-Digital can be passed through by terminal 22
Converter, A/D converter) module is calculated；I is the charging current of charging module 220, since charging circuit is string
Connection circuit, therefore the charging current of output electric current, that is, charging module 220 of charger 20；R be charger 20 and charging module 220 it
Between equivalent impedance, specifically include interface impedance, the impedance of charging cable 21, charging cable 21 between charger 20 and charging cable 21
22 interface of adjustment system of interface impedance and charging current with the adjustment system 22 of charging current is between charging module 220
Impedance etc..
Formula (1) substitution formula (2) is obtained into formula (3):
Vin=V-I × (K+R) ... (3)
Wherein, from the foregoing, it will be observed that I and Vin can be detected by terminal, and V and (K+R) are unknown.
In the method for adjustment of present embodiment charging current, when carrying out the adjustment of charging current, terminal 22 obtains charging
The current charging current I of module 2200With present input voltage V0After enter step S11.And during continuous adjustment, charging electricity
Stream I is stepped up with setting step-length, and setting step-length can determine according to actual needs.It is I with current charging current0For,
Setting step-length is indicated with C, then current charging current I0Charging current on last stage be (I0- C), next stage charging current is
(I0+C)。
S11: current charging current and present input voltage are utilized, the correlation of present load regulation is calculated.
Specifically, the correlation of load regulation is load regulation and charger to the equivalent impedance between charging module
Sum, i.e. (K+R) in formula (3).
In formula (3) VinIn=V-I × (K+R), I and Vin can be detected by terminal, and V and (K+R) are unknown.Cause
This, in order to which correlation (the hereinafter referred to as B of present load regulation is calculated0), it needs to utilize current charging current I0With it is current
Input voltage V0, in combination with another charging current I1And its corresponding charging voltage V1, wherein charging current I1For less than setting
Any charging current for determining charging current, can be preset by user, be also possible to what terminal obtained during the charging process
History charging current.
S12: using the correlation of present load regulation, judge whether charger overloads.
During charger charges to terminal, the variation and charging of the value (hereinafter referred to as K value) of load regulation
The working condition of device is related, and specifically, when charger is in nonoverload work status, K value is varied less；At charger
When overload work, the variation of K value increases, and overload is more serious, and K value is bigger, and charger is between charging module
Equivalent impedance (hereinafter referred to as R value) is held essentially constant.Therefore, the method for adjustment of the charging current of the present embodiment utilizes B0, with
Judge the current whether in the working condition overloaded of charger.
S13a: if charger overloads, charging module permission is set as after current charging current is subtracted setting step-length
Pairs of maximum charging current values.
Specifically, if charger uses current charging current I0When charging to terminal, terminal is detected at charger
In the working condition of overload, then by current charging current I0After subtracting setting step-length C, i.e., by current charging current I0Upper single order
Section charging current (I0- C) it is considered as the maximum output current of charger, and by (I0- C) it is set as charging module and corresponds to the charging
The pairs of maximum charging current values that device allows.
S13b: if charger nonoverload, increase current charging current to set step-length, and re-execute the steps S10.
Specifically, if charger uses current charging current I0When charging to terminal, terminal detects that charger does not have
There is overload, then increases current charging current I to set step-length C0Afterwards, terminal reacquires the current charging current of charging module,
At this point, current charging current is (I0+C)。
By the above-mentioned means, terminal when charging using charger to its charging module, passes through acquisition charging module
Current charging current and current charging voltage, calculate present load regulation correlation, to judge the work shape of charger
State, to detect the practical charging ability of charger so that charger with safer effective charging current to terminal charge, from
And avoid the problem that causing charger to overload because charging current is excessive, it also can avoid causing charging ability unrestrained because charging current is too small
The problem of taking.
Referring to Fig. 3, Fig. 3 is the structural schematic diagram of the method for adjustment second embodiment of charging current of the present invention.This implementation
Example method of adjustment include:
S30: terminal obtains the current charging current of charging module and current when charging using charger to charging module
Input voltage, wherein charging current is stepped up with setting step-length.
Specifically, terminal using charger to charging module charging before, first to charger connection power supply type into
Row detection.
When the power supply type for detecting charger connection is direct current, corresponding charge type is arranged according to charge type in terminal
The charging current that type default is supported.Such as: charger charge type is USB2.0, and charging current is set as 500mA, and charger fills
Electric type is USB3.0, and charging current is set as 900mA.
When the charge type for detecting charger connection is alternating current, charger is using an initial charge current to terminal
It charges, terminal obtains the current charging current and present input voltage of charging module, specifically can refer in above-described embodiment
The description of step S10, details are not described herein.Wherein, initial charge current is less than the setting charging current of charger, and sets and fill
Electric current is no more than the specified charging current of charger.
It for convenience of description, is illustrated so that specified charging current is the charger of 500mA as an example below, setting charging electricity
Stream can be set to 500mA, and initial charge current can be set to 100mA, and setting step-length can be set to 50mA, but the present invention
Obviously it is not specifically limited, it specifically can be according to practical decision.The charging current that then terminal detects be 100mA, 150mA,
200mA ..., meanwhile, terminal 22 is calculated by ADC (Analog-to-Digital Converter, A/D converter) module
Obtain the corresponding charging voltage value of each charging current value.
S31: current charging current and present input voltage are utilized, the correlation of present load regulation is calculated.
Specifically, the correlation of load regulation is load regulation and charger to the equivalent impedance between charging module
Sum, i.e. (K+R) in formula (3).
In formula (3) VinIn=V-I × (K+R), I and VinIt can be detected by terminal, and V and (K+R) are unknown.Cause
This, in order to which correlation (the hereinafter referred to as B of present load regulation is calculated0), it needs to utilize current charging current I0With it is current
Input voltage V0, in combination with another charging current I1And its corresponding charging voltage V1, wherein charging current I1For less than
Any charging current of 500mA, can be preset by user, be also possible to the history that terminal obtains during the charging process and filled
Electric current.
If charging current I1It is the history charging current that terminal obtains during the charging process, then is utilizing current charging current
And present input voltage, it is calculated before the correlation of present load regulation, further comprises: judging current charging current
It whether is initial charge current.
If current charging current is initial charge current, after setting the current charging current of step-length increase, re-execute
Step S30.
If current charging current is not initial charge current, by current charging current I0With present input voltage V0It substitutes into
Formula (3), it is assumed that current charging current I0For 200mA, corresponding present input voltage is V0(200), formula (4) are obtained:
V0(200)=V-0.2 × (K+R) ... (4)
The history charging current I that one group of terminal obtains during the charging process is obtained again1And its corresponding input voltage V1, will
It substitutes into formula (3), it is assumed that I1For 100mA, corresponding input voltage is V1(100), formula (5) are obtained:
V1(100)=V-0.1 × (K+R) ... (5)
Formula (4) is subtracted into formula (5), and uses B0The correlation for indicating present load regulation, obtains formula (6):
V0(200)-V1(100)=0.1 × B of ﹣0……(6)
Pass through deformation formula (6), available B0=﹣ (V0-V1)/(0.1)。
S32: judge whether the correlation of present load regulation is greater than first with reference to correlation, wherein first ginseng
Examine a of the average value between the correlation for the corresponding load regulation of each charging current that correlation is less than setting charging current
Times, and a is greater than 1.
During charger charges to terminal, the variation and charging of the value (hereinafter referred to as K value) of load regulation
The working condition of device is related, and specifically, when charger is in nonoverload work status, K value is varied less；At charger
When overload work, the variation of K value increases, and overload is more serious, and K value is bigger, and charger is between charging module
Equivalent impedance (hereinafter referred to as R value) is held essentially constant.Therefore, the method for adjustment of the charging current of the present embodiment utilizes B0, with
Judge the current whether in the working condition overloaded of charger.
The charger for being 500mA for specified charging current, when charging current is less than 500mA, charger nonoverload, then
Before judging whether the correlation of the present load regulation is greater than first with reference to correlation, further comprise: judgement is worked as
Whether preceding charging current is less than setting charging current, i.e. 500mA.
If current charging current is less than 500mA, the phase of the load regulation of the charger under each charging current is calculated
Average value between the value of pass, and to set after step-length increases current charging current, it re-execute the steps S30.
If current charging current is not less than 500mA, judge whether the cell voltage of terminal reaches setting cell voltage.Tool
Body, since charging module is adapted to charging process, during being charged with suitable current versus cell, battery electricity
When pressing higher, charging module, which increases the charging current allowed, will lead to the floating height of cell voltage, so as to lead to cell voltage
Reach predetermined battery voltage (i.e. the permitted maximum voltage of battery).And works as and detect that cell voltage reaches setting cell voltage
When, terminal can not check and evaluation charger maximum output ability.Therefore, for the maximum output energy of accurate evaluation charger
Power, if judging whether the cell voltage of terminal reaches setting cell voltage not less than after 500mA in current charging current.
If the cell voltage of terminal reaches setting cell voltage, setting time is being waited, cell voltage is less than setting electricity
After cell voltage, with 500mA for current charging current, it re-execute the steps S30.Wherein, setting time can determine according to actual needs
It is fixed.
If the cell voltage of terminal does not reach setting cell voltage, the correlation B of present load regulation is judged0It is
It is no to be greater than first with reference to correlation B1.Wherein, first correlation B is referred to1For the corresponding load of each charging current less than 500mA
A times of average value between the correlation of regulation, and it can be 1.5,1.8 or 2 that a, which is greater than 1, a, it is not limited here.
If B0Greater than B1, then determine the charger overload.
S33: in B0When no more than B, judge whether current charging voltage is less than setting charging voltage.
Specifically, by formula (1) Vout=V-I × K is it is found that the charging current I of terminal is bigger, the output voltage of charger
VoutIt is smaller.Therefore, in B0When no more than B, need further to judge whether current charging voltage is less than setting charging voltage.If
Current charging voltage is less than setting charging voltage, then determines that charger overloads；If current charging voltage is not less than setting charging electricity
Pressure, then determine charger nonoverload.
S34: in charger overload, charging module permission is set as most after current charging current is subtracted setting step-length
Big charging current value.
Specifically, such as: charger is when charging to terminal using the current charging current of 800mA, charger mistake
It carries, then (800mA-50mA), i.e. 750mA is considered as the maximum output voltage of charger, and set charging module for 750mA
The pairs of maximum charging current values that the corresponding charger allows.
S35: in charger nonoverload, increase current charging current to set step-length, and re-execute S30.
Specifically, such as: for charger when being charged using the current charging current of 600mA to terminal, charger is not
Overload, then be considered as the maximum output voltage of charger for (600mA+50mA), i.e. 60mA, and set charging module for 650mA
The pairs of maximum charging current values that the corresponding charger allows.
Referring to Fig. 4, Fig. 4 is the flow diagram of the method for adjustment 3rd embodiment of charging current of the present invention.This implementation
The method of adjustment of the charging current of the method for adjustment and second embodiment of the invention of the charging current of example, which is distinguished, to be, the present embodiment
Charging current method of adjustment use another kind judge the method whether charger overloads.The method of the charging of the present embodiment
Include:
S40: terminal obtains the current charging current of charging module and current when charging using charger to charging module
Input voltage, wherein charging current is stepped up with setting step-length.
S41: current charging current and present input voltage are utilized, the correlation of present load regulation is calculated.
More than, consistent with the method for adjustment step content of the charging current of second embodiment, details are not described herein.
S42: when the correlation of present load regulation is greater than first with reference to correlation, judge present load regulation
Correlation and first with reference to the difference between correlation whether be greater than the first of a times with reference to correlation and second refer to correlation it
Between difference, wherein first is less than each charging current corresponding load regulation of setting charging current with reference to correlation
Average value between correlation, second is less than the corresponding adjustment of load of each charging current of setting charging current with reference to correlation
Minimum value between the correlation of rate, a are greater than 1.
During charger charges to terminal, the variation and charging of the value (hereinafter referred to as K value) of load regulation
The working condition of device is related, and specifically, when charger is in nonoverload work status, K value is varied less；At charger
When overload work, the variation of K value increases, and overload is more serious, and K value is bigger, and charger is between charging module
Equivalent impedance (hereinafter referred to as R value) is held essentially constant.Therefore, the method for adjustment of the charging current of the present embodiment utilizes B0, with
Judge the current whether in the working condition overloaded of charger.
The charger for being 500mA for specified charging current, when charging current is less than 500mA, charger nonoverload, then
Before judging whether the correlation of the present load regulation is greater than first with reference to correlation, further comprise: judgement is worked as
Whether preceding charging current is less than setting charging current, i.e. 500mA.
If current charging current is less than 500mA, the phase of the load regulation of the charger under each charging current is calculated
Average value between the value of pass, and to set after step-length increases current charging current, it re-execute the steps S30.
If current charging current is not less than 500mA, judge whether the cell voltage of terminal reaches setting cell voltage.Tool
Body, since charging module is adapted to charging process, during being charged with suitable current versus cell, battery electricity
When pressing higher, charging module, which increases the charging current allowed, will lead to the floating height of cell voltage, so as to lead to cell voltage
Reach predetermined battery voltage (i.e. the permitted maximum voltage of battery).And works as and detect that cell voltage reaches setting cell voltage
When, terminal can not check and evaluation charger maximum output ability.Therefore, for the maximum output energy of accurate evaluation charger
Power, if judging whether the cell voltage of terminal reaches setting cell voltage not less than after 500mA in current charging current.
If the cell voltage of terminal reaches setting cell voltage, setting time is being waited, cell voltage is less than setting electricity
After cell voltage, with 500mA for current charging current, it re-execute the steps S30.Wherein, setting time can determine according to actual needs
It is fixed.
If the cell voltage of terminal does not reach setting cell voltage, the correlation B of present load regulation is judged0It is
It is no to be greater than first with reference to correlation B1.Wherein, first correlation B is referred to1For the corresponding load of each charging current less than 500mA
Average value between the correlation of regulation.
If B0No more than B1, then determine charger nonoverload, and to set after step-length increases current charging current, hold again
Row step S40.
If B0Greater than B1, then judge (B0- B1) whether it is greater than a times of (B1- B2).Wherein, B2Correlation is referred to for second,
The minimum value being less than between the correlation of the corresponding load regulation of each charging current of setting charging current, a is greater than 1, a can
Think 1.5,1.8 or 2, it is not limited here.
If (B0- B1) it is greater than a times of (B1- B2), then determine the charger overload.
S43: in (B0- B1) it is not more than a times of (B1- B2) when, judge whether current charging voltage is less than setting charging electricity
Pressure.
Specifically, by formula (1) Vout=V-I × K is it is found that the charging current I of terminal is bigger, the output voltage of charger
VoutIt is smaller.Therefore, in B0When no more than B, need further to judge whether current charging voltage is less than setting charging voltage.If
Current charging voltage is less than setting charging voltage, then determines that charger overloads；If current charging voltage is not less than setting charging electricity
Pressure, then determine charger nonoverload.
S44: in charger overload, charging module permission is set as most after current charging current is subtracted setting step-length
Big charging current value.
Specifically, such as: charger is when charging to terminal using the current charging current of 800mA, charger mistake
It carries, then (800mA-50mA), i.e. 750mA is considered as the maximum output voltage of charger, and set charging module for 750mA
The pairs of maximum charging current values that the corresponding charger allows.
S45: in charger nonoverload, increase current charging current to set step-length, and re-execute S30.
Specifically, such as: for charger when being charged using the current charging current of 600mA to terminal, charger is not
Overload, then be considered as the maximum output voltage of charger for (600mA+50mA), i.e. 60mA, and set charging module for 650mA
The pairs of maximum charging current values that the corresponding charger allows.
The method of adjustment of the charging current of the various embodiments described above is usually realized by one section of executable program, and the executable journey
Sequence is stored in computer storage medium.Specific in application, also needing further by being filled with software architecture and hardware configuration
The adjustment system of electric current realizes each step of the method for adjustment of charging current.
For the software architecture of the adjustment system of charging current, Fig. 5-Fig. 7 is please referred to, Fig. 5 is charging current of the present invention
The structural schematic diagram of adjustment system first embodiment, Fig. 6 are the structures of the adjustment system second embodiment of charging current of the present invention
Schematic diagram；Fig. 7 is the structural schematic diagram of the adjustment system 3rd embodiment of charging current of the present invention.
Referring specifically to Fig. 5, the adjustment system of the charging current of first embodiment of the invention includes obtaining module 50, calculating
Module 51, judgment module 52, setup module 53 and increase module 54.
Specifically, it obtains module 50 and is used for terminal when charging using charger to charging module, obtain charging module
Current charging current and present input voltage, wherein charging current is stepped up with setting step-length；Computing module 51 is for utilizing
Current charging current and present input voltage, are calculated the correlation of present load regulation；Judgment module 52 is for utilizing
The correlation of present load regulation, judges whether charger overloads；Setup module 53 is used in charger overload, will be current
Charging current is set as the pairs of maximum charging current values that charging module allows after subtracting setting step-length；Increase module 54 for charging
When device nonoverload, increase current charging current to set step-length.
Each functional module of this implementation adjustment system both corresponds to the method for adjustment first embodiment of above-mentioned charging current
Each step, specifically repeat no more.
Referring specifically to Fig. 6, the adjustment system of the charging current of second embodiment of the invention includes obtaining module 60, calculating
Module 61, first judgment module 62, the second judgment module 63, setup module 64 and increase module 65.
Specifically, it obtains module 60 and is used for terminal when charging using charger to charging module, obtain charging module
Current charging current and present input voltage, wherein charging current is stepped up with setting step-length；Computing module 61 is for utilizing
Current charging current and present input voltage, are calculated the correlation of present load regulation；First judgment module 62 is used for
Judge whether the correlation of present load regulation is greater than first with reference to correlation, wherein the first reference correlation is small
A times of average value between the correlation of the corresponding load regulation of each charging current of setting charging current, and a is greater than 1；
Second judgment module 63 is used to judge current charging when the correlation of present load regulation is no more than the first reference correlation
Whether voltage is less than setting charging voltage；Setup module 64 is used to that current charging current to be subtracted setting in charger overload
The pairs of maximum charging current values of charging module permission is set as after step-length；Increase module 65 to be used in charger nonoverload, to set
Fixed step size increases current charging current.
Each functional module of this implementation adjustment system both corresponds to the method for adjustment second embodiment of above-mentioned charging current
Each step, specifically repeat no more.
Referring specifically to Fig. 7, the adjustment system of the charging current of third embodiment of the invention includes obtaining module 70, calculating
Module 71, first judgment module 72, the second judgment module 73, setup module 74 and increase module 75.
Specifically, it obtains module 70 and is used for terminal when charging using charger to charging module, obtain charging module
Current charging current and present input voltage, wherein charging current is stepped up with setting step-length；Computing module 71 is for utilizing
Current charging current and present input voltage, are calculated the correlation of present load regulation；First judgment module 72 is used for
When the correlation of present load regulation is greater than first with reference to correlation, the correlation and first of present load regulation is judged
The difference whether being greater than between a times of the first reference correlation and the second reference correlation with reference to the difference between correlation,
In, first is less than between the correlation of the corresponding load regulation of each charging current of setting charging current with reference to correlation
Average value, second with reference to correlation be less than setting charging current the corresponding load regulation of each charging current correlation it
Between minimum value, a be greater than 1；Second judgment module 73 is used to refer to correlation in the correlation of present load regulation and first
Between first of difference no more than a times with reference to correlation and second with reference to difference between correlation when, judgement is currently charged
Whether voltage is less than setting charging voltage；Setup module 74 is used to that current charging current to be subtracted setting in charger overload
The pairs of maximum charging current values of charging module permission is set as after step-length；Increase module 75 to be used in charger nonoverload, to set
Fixed step size increases current charging current.
Each functional module of this implementation adjustment system both corresponds to the method for adjustment 3rd embodiment of above-mentioned charging current
Each step, specifically repeat no more.
For hardware configuration, referring to Fig. 8, Fig. 8 is the structural schematic diagram of one embodiment of electric terminal of the present invention.
From the perspective of hardware realization, the electric terminal of the present embodiment includes control circuit 80, charging interface 81, charging
Circuit 82, battery 83 and memory 84.
Wherein, control circuit 80 and charging circuit 82 couple, and charging interface 81, charging circuit 82 and battery 83 successively connect
It connects.Charger is connect with charging interface 81, and the electric energy of output charges to charging circuit 82, and charging circuit 82 is further to charging
Process is adapted to, and is charged with suitable current versus cell 83.
Specifically, control circuit 82 executes following movement: obtaining charging circuit when charger charges to charging circuit 84
Current charging current and present input voltage, wherein charging current is stepped up with setting step-length；Utilize current charging current
And present input voltage, the correlation of present load regulation is calculated；Utilize the correlation of present load regulation, judgement
Whether charger overloads；In charger nonoverload, charging circuit is controlled to set step-length and increases current charging current；It is charging
When device overloads, adjustment current value is obtained after current charging current is subtracted setting step-length, is set as the maximum of charging circuit permission
Charging current value, and store it in memory 84, so that charger carries out electric terminal using pairs of maximum charging current values
Charging.Electric terminal is rechargeable devices, can be mobile phone, plate, but be not limited only to this.
On this basis, the above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all
It is using equivalent structure or equivalent flow shift made by present specification and accompanying drawing content, example is special according to technology between each embodiment
Sign be combined with each other, and being applied directly or indirectly in other relevant technical fields, similarly includes protecting in patent of the invention
It protects in range.
Claims (7)
1. a kind of method of adjustment of charging current characterized by comprising
Terminal obtains the current charging current and current input of the charging module when charging using charger to charging module
Voltage, wherein charging current is stepped up with setting step-length；
Using the current charging current and the present input voltage, the correlation of present load regulation, institute is calculated
The correlation for stating load regulation be load regulation and the charger to the equivalent impedance between the charging module and；
Using the correlation of the present load regulation, judge whether the charger overloads；
If the charger overload, is set as the charging module after the current charging current is subtracted the setting step-length
The pairs of maximum charging current values of permission；If the charger nonoverload, the current charging current is increased with the setting step-length, and
Re-execute above-mentioned steps；
Wherein, the correlation using the present load regulation, judges whether the charger overloads, and further wraps
It includes:
Judge whether the correlation of the present load regulation is greater than first with reference to correlation, wherein described first refers to phase
Pass value is less than a times of the average value between the correlation of the corresponding load regulation of each charging current of setting charging current,
And a is greater than 1；
If so, determining the charger overload；
If it is not, then further judging whether the present input voltage is less than setting charging voltage；In the present input voltage
When less than setting charging voltage, the charger overload is determined；When the present input voltage is not less than setting charging voltage,
Determine the charger nonoverload.
2. method of adjustment according to claim 1, which is characterized in that described using the current charging current and described to work as
Preceding input voltage is calculated the correlation of the present load regulation, further comprises:
Utilize formula V0-V1=﹣ (I0-I1)×B0The correlation B of the present load regulation is calculated0, wherein the I0
For the current charging current, the V0For the present input voltage, the I1For any charging less than setting charging current
Electric current, the V1For the I1Corresponding input voltage.
3. method of adjustment according to claim 1, which is characterized in that the correlation using the present load regulation
Value, judges whether the charger overloads, further comprises:
When the correlation of the present load regulation is greater than first with reference to correlation, the present load regulation is judged
Correlation and described first is referred to reference to the first reference correlation and the second whether difference between correlation is greater than a times
Difference between correlation, wherein each charging current that the first reference correlation is less than setting charging current is corresponding
Average value between the correlation of load regulation, described second is less than respectively filling for the setting charging current with reference to correlation
Minimum value between the correlation of the corresponding load regulation of electric current, a are greater than 1；
If so, determining the charger overload；
If it is not, then further judging whether the present input voltage is less than setting charging voltage；In the present input voltage
When less than setting charging voltage, the charger overload is determined；When the present input voltage is not less than setting charging voltage,
Determine the charger nonoverload.
4. a kind of adjustment system of charging current characterized by comprising
Module is obtained, for terminal when charging using charger to charging module, obtains the current charging of the charging module
Electric current and present input voltage, wherein charging current is stepped up with setting step-length；
Present load adjustment is calculated for utilizing the current charging current and the present input voltage in computing module
The correlation of rate；
Judgment module judges whether the charger overloads for the correlation using the present load regulation, wherein
The correlation of the load regulation is load regulation and the charger to the equivalent impedance between the charging module
With；
Setup module, for being arranged after the current charging current is subtracted the setting step-length in charger overload
The pairs of maximum charging current values allowed for the charging module；
Increase module, for increasing the current charging current with the setting step-length in the charger nonoverload；
Wherein, the judgment module includes:
First judging unit refers to correlation for judging whether the correlation of the present load regulation is greater than first,
In, it is described first with reference to correlation be less than setting charging current the corresponding load regulation of each charging current correlation it
Between a times of average value, and a is greater than 1；
If so, determining the charger overload；
If it is not, then entering second judgment unit；
Second judgment unit, for judging whether the present input voltage is less than setting charging voltage；In the current input
When voltage is less than setting charging voltage, the charger overload is determined；In the present input voltage not less than setting charging electricity
When pressure, the charger nonoverload is determined.
5. system according to claim 4, which is characterized in that
The computing module utilizes formula V0-V1=﹣ (I0-I1)×B0The correlation of the present load regulation is calculated
B0, wherein the I0For the current charging current, the V0For the present input voltage, the I1To charge less than setting
Any charging current of electric current, the V1For the I1Corresponding input voltage.
6. system according to claim 4, which is characterized in that the judgment module further comprises:
First judging unit is further used for being greater than first with reference to correlation in the correlation of the present load regulation
When, whether the correlation and described first for judging the present load regulation are greater than a times with reference to the difference between correlation
Described first refers to correlation and second with reference to the difference between correlation, wherein the first reference correlation, which is less than, to be set
Determine the average value between the correlation of the corresponding load regulation of each charging current of charging current, described second refers to correlation
The minimum value being less than between the correlation of the corresponding load regulation of each charging current of the setting charging current, a are greater than
1；
The second judgment unit is further used for related to first reference in the correlation of the present load regulation
When difference between value is not more than the difference between the first reference correlation and the second reference correlation, judge described current
Whether input voltage is less than setting charging voltage.
7. a kind of electric terminal characterized by comprising
Control circuit；
Sequentially connected charging interface, charging circuit and battery, wherein the control circuit and the charging circuit couple；
Wherein, the control circuit executes following movement when charger charges to charging circuit:
Obtain the current charging current and present input voltage of the charging circuit, wherein charging current is to set step-length gradually
Increase；
Using the current charging current and the present input voltage, the correlation of present load regulation, institute is calculated
The correlation for stating load regulation be load regulation and the charger to the equivalent impedance between the charging circuit and；
Using the correlation of the present load regulation, judge whether the charger overloads；
In charger overload, adjustment current value is obtained after the current charging current is subtracted the setting step-length, if
It is set to the pairs of maximum charging current values that the charging circuit allows；
In the charger nonoverload, the charging circuit is controlled with the setting step-length and increases the current charging current；
Wherein, the correlation using the present load regulation, judges whether the charger overloads, and further wraps
It includes:
Judge whether the correlation of the present load regulation is greater than first with reference to correlation, wherein described first refers to phase
Pass value is less than a times of the average value between the correlation of the corresponding load regulation of each charging current of setting charging current,
And a is greater than 1；
If so, determining the charger overload；
If it is not, then further judging whether the present input voltage is less than setting charging voltage；In the present input voltage
When less than setting charging voltage, the charger overload is determined；When the present input voltage is not less than setting charging voltage,
Determine the charger nonoverload.
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| CN107579572A (en) * | 2017-10-10 | 2018-01-12 | 惠州Tcl移动通信有限公司 | A kind of charging current control method, mobile terminal and storage medium |
| CN107994650B (en) * | 2017-12-27 | 2020-01-10 | Oppo广东移动通信有限公司 | Charging control method, device and equipment |
| CN108429304B (en) * | 2018-02-27 | 2021-04-27 | 漳州科华技术有限责任公司 | Charging current control method and device, computer device and readable storage medium |
| CN108847699B (en) | 2018-07-03 | 2020-11-20 | 北京小米移动软件有限公司 | Charging method and electronic device |
| CN111198911B (en) * | 2018-11-19 | 2021-05-25 | 珠海格力电器股份有限公司 | Data extraction method |
| CN109995112B (en) * | 2019-04-04 | 2022-09-02 | 合肥联宝信息技术有限公司 | Power supply management method and device |
| CN112350393B (en) * | 2020-06-28 | 2021-11-02 | 中兴通讯股份有限公司 | Charging method, terminal and storage medium |
| CN114362329A (en) * | 2022-02-21 | 2022-04-15 | 度普(苏州)新能源科技有限公司 | Method for determining output current of charging equipment and related equipment |
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