CN105048013A - Charging management method and mobile terminal - Google Patents

Charging management method and mobile terminal Download PDF

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Publication number
CN105048013A
CN105048013A CN201510300772.1A CN201510300772A CN105048013A CN 105048013 A CN105048013 A CN 105048013A CN 201510300772 A CN201510300772 A CN 201510300772A CN 105048013 A CN105048013 A CN 105048013A
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China
Prior art keywords
mobile terminal
current value
charging current
value
charging
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CN201510300772.1A
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CN105048013B (en
Inventor
苏上丁
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/446—Initial charging measures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The embodiment of the invention relates to the technical field of electronics, and discloses a charging management method and a mobile terminal. The method comprises the following steps of: acquiring a current charging current value of the mobile terminal during the charging process of the mobile terminal; judging whether the current charging current value is smaller than a preset charging current value or not; if yes, adjusting the current charging current value of the mobile terminal so as to lead the charging power of the mobile terminal to reach maximum charging power; and finally, controlling the mobile terminal and charging the mobile terminal with the charging current value corresponding to the maximum charging power. Through the embodiment disclosed by the invention, when the charging current value of the mobile terminal is smaller than an expected value, the charging current is adjusted to make the charging power of the mobile terminal maximum, so that the charging efficiency of the mobile terminal can be improved, electric energy waste during the charging process also can be reduced, and heat dissipated in the process that an external charger charges the mobile terminal is reduced.

Description

A kind of charging management method and mobile terminal
Technical field
The present invention relates to electronic technology field, be specifically related to a kind of charging management method and mobile terminal.
Background technology
Nowadays, adopt mobile terminal (as mobile phone, the panel computer etc.) application of rechargeable battery widely, and these mobile terminal major parts connect external dc power (as USB main equipment such as charger for mobile phone, portable power source or PC) by the B type socket of USB, and be the charging of its battery after inner voltage reduction module process.Under normal circumstances, external dc power exports with constant voltage, and carries out overload protection (exporting as adopted TPS2553 chip current limliting) by current-limiting circuit.When mobile terminal is from external dc power power taking, usually adopts charging management chip (as BQ24196) to convert DC power supply step-down to mate with this battery of mobile terminal power supply, and then charge the battery.
As shown in Figure 1, Fig. 1 is the variation relation schematic diagram of TPS2553 chip when carrying out overload protection between output current and output voltage, wherein, and I in Fig. 1 oSfor the cut-off current threshold value of TPS2553 chip, V oUTfor output voltage.As can be seen from Figure 1, when load resistance diminishes (input current of output current i.e. mobile terminal increases), output voltage (i.e. the input voltage of mobile terminal) can reduce gradually, and when output current reaches cut-off current threshold value, output voltage can fall suddenly along with the trickle increase of output current.Charging management chip expects that in power taking process input current is the bigger the better, can charge to battery of mobile terminal fast usually.But in order to adapt to the power supply capacity of outside various DC power supply, the input voltage threshold value that charging management chip is arranged is generally lower than the output voltage of external dc power.So in power taking process, charging management chip because the increase of input current causes actual input voltage close to input voltage threshold value, will cause the operating power of operating power lower than external dc power of charging management chip possibly like this.And according to conservation of energy principle, the difference power between the operating power of external dc power and the operating power of charging management chip finally can with the form consumption of heat energy in the current limliting module of external dc power.Visible, the existing Charge Management mode of mobile terminal not only makes mobile terminal charge efficiency reduce, and also can cause the waste of electric energy and bring the heat dissipation problem of external power source.
Summary of the invention
The embodiment of the invention discloses a kind of charging management method and mobile terminal, the charge efficiency to battery of mobile terminal can be improved.
Embodiment of the present invention first aspect discloses a kind of charging management method, is applied to mobile terminal, comprising:
Obtain the present charging current value of described mobile terminal;
Judge whether described present charging current value is less than preset charged current value;
If described present charging current value is less than described preset charged current value, then increase described present charging current value, obtain the first charging current value of described mobile terminal;
Obtain the first charging voltage value of described mobile terminal corresponding to described first charging current value;
Calculate the first absolute value of the current charging voltage value of described mobile terminal corresponding to described present charging current value and the difference of described first charging voltage value;
Judge whether described first absolute value is less than the first voltage threshold, and be greater than the second voltage threshold, wherein, described first voltage threshold is greater than described second voltage threshold;
If described first absolute value is less than described first voltage threshold, and be greater than described second voltage threshold, then determine that the charge power that described present charging current value is corresponding is maximum charge power, and control described mobile terminal and charge with described present charging current value.
In conjunction with embodiment of the present invention first aspect, in the first possible implementation of embodiment of the present invention first aspect, described method also comprises:
If described first absolute value is greater than described first voltage threshold, then reduce described present charging current value, obtain the second charging current value of described mobile terminal;
Obtain the second charging voltage value of described mobile terminal corresponding to described second charging current value;
Calculate the second absolute value of the current charging voltage value of described mobile terminal corresponding to described present charging current value and the difference of described second charging voltage value;
Judge whether described second absolute value is less than described first voltage threshold, and be greater than described second voltage threshold;
If described second absolute value is less than described first voltage threshold, and be greater than described second voltage threshold, then determine that the charge power that described second charging current value is corresponding is maximum charge power, and control described mobile terminal and charge with described second charging current value.
In conjunction with embodiment of the present invention first aspect, in the implementation that the second of embodiment of the present invention first aspect is possible, described method also comprises:
If described first absolute value is less than described second voltage threshold, then increase described first charging current value, obtain the 3rd charging current value of described mobile terminal;
Obtain the 3rd charging voltage value of described mobile terminal corresponding to described 3rd charging current value;
Calculate the 3rd absolute value of the difference of described first charging voltage value and described 3rd charging voltage value;
Judge whether described 3rd absolute value is less than the first voltage threshold, and be greater than the second voltage threshold;
If described 3rd absolute value is less than described first voltage threshold, and be greater than described second voltage threshold, then determine that the charge power that described first charging current value is corresponding is maximum charge power, and control described mobile terminal and charge with described first charging current value.
In conjunction with embodiment of the present invention first aspect, in the third possible implementation of embodiment of the present invention first aspect, the described charge power determining that described present charging current value is corresponding is maximum charge power, comprising:
Reduce described present charging current value, obtain the 4th charging current value of described mobile terminal;
Obtain the 4th charging voltage value of described mobile terminal corresponding to described 4th charging current value;
Calculate the 4th absolute value of the difference of described current charging voltage value and described 4th charging voltage value;
Judge whether described 4th absolute value is less than described first voltage threshold, and be greater than described second voltage threshold;
If described 4th absolute value is less than described second voltage threshold, then determine that the charge power that described present charging current value is corresponding is maximum charge power.
Accordingly, embodiment of the present invention second aspect discloses a kind of mobile terminal, comprising:
First acquiring unit, for obtaining the present charging current value of described mobile terminal;
First judging unit, for judging whether described present charging current value is less than preset charged current value;
Increase unit, for when the result judged of described first judging unit is as being, increasing described present charging current value, obtaining the first charging current value of described mobile terminal;
Second acquisition unit, for obtaining the first charging voltage value of described mobile terminal corresponding to described first charging current value;
Computing unit, for calculating the current charging voltage value of described mobile terminal corresponding to described present charging current value that described first acquiring unit gets, the first absolute value of the difference of described first charging voltage value got with described second acquisition unit;
Second judging unit, for judging whether described first absolute value is less than the first voltage threshold, and be greater than the second voltage threshold, wherein, described first voltage threshold is greater than described second voltage threshold;
Control unit, for judging that described first absolute value is less than described first voltage threshold at described second judging unit, and when being greater than described second voltage threshold, determine that the charge power that described present charging current value is corresponding is maximum charge power, and control described mobile terminal and charge with described present charging current value.
In conjunction with embodiment of the present invention second aspect, in the first possible implementation of embodiment of the present invention second aspect, described terminal also comprises:
Reduce unit, for when described second judging unit judges that described first absolute value is greater than described first voltage threshold, reduce described present charging current value, obtain the second charging current value of described mobile terminal;
Wherein, described second acquisition unit, also for obtaining the second charging voltage value of described mobile terminal corresponding to described second charging current value;
Described computing unit, also for calculating the current charging voltage value of described mobile terminal corresponding to described present charging current value that described first acquiring unit gets, the second absolute value of the difference of described second charging voltage value got with described second acquisition unit;
Described second judging unit, also for judging whether described second absolute value is less than described first voltage threshold, and is greater than described second voltage threshold;
Described control unit, also for judging that described second absolute value is less than described first voltage threshold at described second judging unit, and when being greater than described second voltage threshold, determine that the charge power that described second charging current value is corresponding is maximum charge power, and control described mobile terminal and charge with described second charging current value.
In conjunction with embodiment of the present invention second aspect, in the implementation that the second of embodiment of the present invention second aspect is possible:
Described increase unit, also for when described second judging unit judges that described first absolute value is less than described second voltage threshold, increases described first charging current value, obtains the 3rd charging current value of described mobile terminal;
Described second acquisition unit, also for obtaining the 3rd charging voltage value of described mobile terminal corresponding to described 3rd charging current value;
Described computing unit, also for calculating the 3rd absolute value of the difference of described first charging voltage value and described 3rd charging voltage value;
Described second judging unit, also for judging whether described 3rd absolute value is less than the first voltage threshold, and is greater than the second voltage threshold;
Described control unit, also for judging that at described second judging unit described 3rd absolute value is less than described first voltage threshold, and when being greater than described second voltage threshold, determine that the charge power that described first charging current value is corresponding is maximum charge power, and control described mobile terminal and charge with described first charging current value.
In conjunction with embodiment of the present invention second aspect, in the third possible implementation of embodiment of the present invention second aspect, described control unit determines that charge power that described present charging current value is corresponding is the concrete mode of maximum charge power and is:
Reduce described present charging current value, obtain the 4th charging current value of described mobile terminal;
Obtain the 4th charging voltage value of described mobile terminal corresponding to described 4th charging current value;
Calculate the 4th absolute value of the difference of described current charging voltage value and described 4th charging voltage value;
Judge whether described 4th absolute value is less than described first voltage threshold, and be greater than described second voltage threshold;
If described 4th absolute value is less than described second voltage threshold, then determine that the charge power that described present charging current value is corresponding is maximum charge power.
Implement the embodiment of the present invention, there is following beneficial effect:
In the embodiment of the present invention, mobile terminal is in charging process, first the present charging current value of this mobile terminal can be obtained, then judge whether this present charging current value is less than preset charged current value, if be less than, just adjust the present charging current value of this mobile terminal, to make the charge power of this mobile terminal reach maximum charge power, finally control this mobile terminal and with the charging current value that this maximum charge power is corresponding, it is charged.Pass through the embodiment of the present invention, mobile terminal is when charging current value is less than desired value, make the charge power of mobile terminal maximum by adjustment charging current, so not only can improve the charge efficiency of mobile terminal, the waste of energy in charging process can also be reduced, and reduce external charger to the heat dissipation capacity in mobile terminal charging process.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the variation relation schematic diagram of TPS2553 chip when carrying out overload protection between output current and output voltage in prior art;
Fig. 2 is the schematic flow sheet of a kind of charging management method disclosed in the embodiment of the present invention;
Fig. 3 is the schematic flow sheet of another kind of charging management method disclosed in the embodiment of the present invention;
Fig. 4 is the structural representation of a kind of mobile terminal disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of charging management method and mobile terminal, the charge efficiency to battery of mobile terminal can be improved.Below be described in detail respectively.
Refer to Fig. 2, Fig. 2 is the schematic flow sheet of a kind of charging management method disclosed in the embodiment of the present invention.Wherein, method shown in Fig. 2 can be applied to smart mobile phone (as Android phone, iOS mobile phone etc.), MP3, MP4, MP5, panel computer, palmtop PC and mobile internet device (MobileInternetDevices, MID), in the mobile terminal such as PAD, Intelligent worn device, and this mobile terminal configuration has rechargeable battery.As shown in Figure 2, this charging management method can comprise the following steps:
The present charging current value of S101, this mobile terminal of acquisition for mobile terminal.
In the embodiment of the present invention, present charging current value is the input current value of this mobile terminal in charging process, therefore, mobile terminal can obtain current charging current value by the charging management chip (charge management circuit or charge management module) of its inside at its charging initial stage.Further, this mobile terminal also may obtain current charging current value in charging stationary phase, and the embodiment of the present invention does not limit.
S102, this mobile terminal judge whether this present charging current value is less than preset charged current value, if so, perform step S103; If not, process ends.
In the embodiment of the present invention, preset charged current value is the desired value of this mobile terminal charging current in charging process, and that is, mobile terminal is at the current value of power taking first in external dc power power taking.Therefore, when getting the present charging current value of this mobile terminal, this mobile terminal can judge whether this present charging current value is less than preset charged current value.If this present charging current value is less than preset charged current value, this mobile terminal just needs to adjust present charging current value, reaches maximum to make the charge power of mobile terminal; If this present charging current value is greater than preset charged current value, just illustrate that the current charging current of mobile terminal has reached the desired value of this mobile terminal, therefore can process ends.
S103, this mobile terminal increase present charging current value, obtain the first charging current value of this mobile terminal.
In the embodiment of the present invention, when judging that this present charging current value is less than preset charged current value, just show that mobile terminal is not maximum charge power with the current charge power that present charging current value carries out charging, can also promote current charge power, to reach the maximum utilizationization of electric energy, so this mobile terminal can adjust this present charging current value.
As a kind of feasible execution mode, this mobile terminal first can increase present charging current value, obtains the first charging current value of this mobile terminal.
As the execution mode that another kind is feasible, this mobile terminal can also first reduce this present charging current value, obtains the charging current value after a reduction.
Concrete, mobile terminal is when increasing or reduce present charging current value, mainly adjust in the mode of fine setting, specifically can adjust charging current value with mA level, can also adjust charging current value with uA level, the current value amplitude of each adjustment can be different, also can be to adjust with fixing current value amplitude, and the embodiment of the present invention does not limit.
First charging voltage value of S104, this mobile terminal that this acquisition for mobile terminal first charging current value is corresponding.
In the embodiment of the present invention, when present charging current value is increased to the first charging current value by mobile terminal, this mobile terminal can corresponding the first charging voltage value obtaining this mobile terminal corresponding to this first charging current value.
In the embodiment of the present invention, the mode of acquisition for mobile terminal current value and magnitude of voltage can be undertaken detecting obtaining by the charging management chip of mobile terminal.
S105, this mobile terminal calculate the first absolute value of the current charging voltage value of this mobile terminal corresponding to present charging current value and the difference of the first charging voltage value.
In the embodiment of the present invention, this mobile terminal, after getting the first charging voltage value corresponding to this first charging current value, can calculate the first absolute value of the difference between current charging voltage value and this first charging voltage value that before deserving, charging current value is corresponding.Wherein, can this first absolute value, in order to after judging that this present charging current value is increased to the first charging current value, make the charge power of this mobile terminal reach maximum.
S106, this mobile terminal judge whether this first absolute value is less than the first voltage threshold, and are greater than the second voltage threshold, if so, perform step S107; If not, process ends.
In the embodiment of the present invention, after the first absolute value of difference calculating this current charging voltage value and this first charging voltage value, this first absolute value and the first voltage threshold and the second voltage threshold can compare by this mobile terminal.
Concrete, the variation relation figure of current value and magnitude of voltage in charging process shown in composition graphs 1, can find out, suppose that the current charging current of mobile terminal is at cut-off current Near Threshold, if increase charging current value again, charging voltage may exceed because of the power taking electric current of mobile terminal cut-off current threshold value that external dc voltage provides and will be 0V, therefore, at this moment mobile terminal charging voltage value amplitude of variation is comparatively large, so this charging voltage value amplitude of variation can be defined as the first voltage threshold.Further, this first voltage threshold also can in the certain limit of this charging voltage value amplitude of variation, and the embodiment of the present invention does not limit.
Concrete, suppose the breakover point left side (namely present charging current value be less than cut-off current threshold value) of the current charging current of mobile terminal at Fig. 1, if after the current charging current of this mobile terminal is increased to the first charging current value, first charging current value does not reach the working current value of this breakover point, amplitude of variation now between the first charging voltage value and current charging voltage value is more slow, and so the amplitude of variation between this first charging voltage value and current charging voltage value can be defined as the second voltage threshold by this mobile terminal.Further, this second voltage threshold also can in the certain limit of this charging voltage value amplitude of variation, and the embodiment of the present invention does not limit.
In the embodiment of the present invention, in conjunction with the above-mentioned description to the first voltage threshold and the second voltage threshold, can know, this first voltage threshold is greater than this second voltage threshold.
In specific implementation, when mobile terminal judges that this first absolute value is less than the first voltage threshold and is greater than the second voltage threshold, this mobile terminal tentatively can determine that the charging working point corresponding to present charging current value of this mobile terminal is in breakover point and dotted line as shown in Figure 1 and realizes between intersection point (i.e. desirable best operating point and minimum working point).Therefore, this mobile terminal can using charging work corresponding for this present charging current value as maximum charge power.When mobile terminal judges that this first absolute value is not between the second voltage threshold and the first voltage threshold, this mobile terminal can not do any operation, and process ends.
S107, this mobile terminal determine that the charge power that this present charging current value is corresponding is maximum charge power, and control this mobile terminal and charge with present charging current value.
In the embodiment of the present invention, when mobile terminal judges that this first absolute value is less than the first voltage threshold and is greater than the second voltage threshold, this mobile terminal using charge power corresponding for this present charging current value as maximum charge power, and can control this mobile terminal with the externally DC power supply power taking of this present charging current value (namely charging).
As a kind of feasible execution mode, this mobile terminal determines that the charge power that this present charging current value is corresponding is that the concrete mode of maximum charge power can comprise the following steps:
Step 11) reduce this present charging current value, obtain the 4th charging current value of this mobile terminal;
Step 12) obtain the 4th charging voltage value of this mobile terminal corresponding to the 4th charging current value;
Step 13) calculate the 4th absolute value of the difference of this current charging voltage value and the 4th charging voltage value;
Step 14) judge whether the 4th absolute value is less than this first voltage threshold, and be greater than this second voltage threshold;
Step 15) if the 4th absolute value is less than this second voltage threshold, then determine that the charge power that this present charging current value is corresponding is maximum charge power.
Concrete, when mobile terminal judges that this first absolute value is less than the first voltage threshold and is greater than the second voltage threshold, this mobile terminal tentatively can determine that the charge power corresponding to present charging current value of this mobile terminal is maximum charge power.But in order to verify the accuracy of this present charging current value further, this mobile terminal can again on the basis of present charging current value, reduce this present charging current value, obtain the 4th charging current value, and then judge that the amplitude of variation (i.e. the 4th absolute value) of the 4th charging voltage value that the 4th charging current value is corresponding and this current charging voltage value is whether also between this first voltage threshold and second voltage threshold.If the 4th absolute value is less than the second voltage threshold, show that the working point of this mobile terminal under current charging current is in the breakover point (near desirable best operating point) shown in Fig. 1, therefore, this mobile terminal just can determine that the charge power corresponding to current charging current is maximum charge power further; And if the 4th absolute value is be greater than the second voltage threshold and be less than the first voltage threshold equally, so just show that the working point of this mobile terminal under current charging current is in the right side of desirable best operating point, therefore, this mobile terminal can continue repeated execution of steps 11 ~ step 14.
In the embodiment of the present invention, mobile terminal is in charging process, first the present charging current value of this mobile terminal can be obtained, then judge whether this present charging current value is less than preset charged current value, if be less than, just adjust the present charging current value of this mobile terminal, to make the charge power of this mobile terminal reach maximum charge power, finally control this mobile terminal and with the charging current value that this maximum charge power is corresponding, it is charged.Pass through the embodiment of the present invention, mobile terminal is when charging current value is less than desired value, make the charge power of mobile terminal maximum by adjustment charging current, so not only can improve the charge efficiency of mobile terminal, the waste of energy in charging process can also be reduced, and reduce external charger to the heat dissipation capacity in mobile terminal charging process.
Refer to Fig. 3, Fig. 3 is the schematic flow sheet of another kind of charging management method disclosed in the embodiment of the present invention.Wherein, method shown in Fig. 3 can be applied to smart mobile phone (as Android phone, iOS mobile phone etc.), MP3, MP4, MP5, panel computer, palmtop PC and mobile internet device (MobileInternetDevices, MID), in the mobile terminal such as PAD, Intelligent worn device, and this mobile terminal configuration has rechargeable battery.As shown in Figure 3, this charging management method can comprise the following steps:
The present charging current value of S201, this mobile terminal of acquisition for mobile terminal.
S202, this mobile terminal judge whether this present charging current value is less than preset charged current value, if so, perform step S203; If not, process ends.
S203, this mobile terminal increase present charging current value, obtain the first charging current value of this mobile terminal.
First charging voltage value of S204, this mobile terminal that this acquisition for mobile terminal first charging current value is corresponding.
S205, this mobile terminal calculate the first absolute value of the current charging voltage value of this mobile terminal corresponding to present charging current value and the difference of the first charging voltage value.
S206, this mobile terminal judge whether this first absolute value is less than the first voltage threshold, and are greater than the second voltage threshold, if this first absolute value is greater than this first voltage threshold, perform step S207 ~ step S211; If this first absolute value is less than this second voltage threshold, perform step S212 ~ step S216.
S207, this mobile terminal reduce this present charging current value, obtain the second charging current value of this mobile terminal.
In the embodiment of the present invention, when this mobile terminal judges that this first absolute value is greater than this first voltage threshold, show that the charging working point of this mobile terminal under present charging current value is between desirable best operating point and minimum working point, therefore, mobile terminal can reduce this present charging current value further, obtains the second charging current value of this mobile terminal.
Second charging voltage value of S208, this mobile terminal that this second charging current value of this acquisition for mobile terminal is corresponding.
In the embodiment of the present invention, when mobile terminal reduces this present charging current value to the second charging current value, this mobile terminal can corresponding the second charging voltage value obtaining this mobile terminal corresponding to this second charging current value.
In the embodiment of the present invention, the mode of acquisition for mobile terminal current value and magnitude of voltage can be undertaken detecting obtaining by the charging management chip of mobile terminal.
S209, this mobile terminal calculate the second absolute value of the difference of this current charging voltage value and this second charging voltage value.
In the embodiment of the present invention, same, this mobile terminal, after getting the second charging voltage value, can calculate the second absolute value of the difference between current charging voltage value and this second charging voltage value that before deserving, charging current value is corresponding.Wherein, can this second absolute value in order to after judging that this present charging current value is decreased to the second charging current value, make the charge power of this mobile terminal reach maximum equally.
S210, this mobile terminal judge whether this second absolute value is less than this first voltage threshold, and are greater than this second voltage threshold.
In the embodiment of the present invention, after the second absolute value of difference calculating this current charging voltage value and this second charging voltage value, this second absolute value and the first voltage threshold and the second voltage threshold can compare by this mobile terminal.
Concrete, when this mobile terminal judges that this second absolute value is less than this first voltage threshold and is greater than this second voltage threshold, this mobile terminal just can determine that the charge power that this second charging current value is corresponding is maximum charge power, and controls this mobile terminal and charge with this second charging current value; When this mobile terminal judges that this second absolute value is less than this second voltage threshold, this mobile terminal will increase this present charging current value again, and the amplitude this time increasing this present charging current value is less than in step S203 the amplitude increasing this present charging current value.
If this second absolute value of S211 is less than this first voltage threshold and is greater than this second voltage threshold, this mobile terminal determines that the charge power that this second charging current value is corresponding is maximum charge power, and controls this mobile terminal and charge with this second charging current value.
In the embodiment of the present invention, when judging that this second absolute value is less than this first voltage threshold and is greater than this second voltage threshold, this mobile terminal using charge power corresponding for this second charging current value as maximum charge power, and can control this mobile terminal with this second charging current value externally DC power supply power taking (namely charging).
As a kind of feasible execution mode, this mobile terminal determines that charge power that this second charging current value is corresponding is the concrete mode of maximum charge power and can is: on the basis of the second charging current value, reduce this second charging current value, then charging voltage value corresponding for the charging current value after reduction and the second charging voltage value are compared, calculate the absolute value of the difference between them, and judge whether this absolute value is also between this second voltage threshold and first voltage threshold.If this absolute value is less than the second voltage threshold, so this mobile terminal just can determine that this charge power corresponding to the second charging current value is maximum charge power, and then with the power taking from external dc power of the second charging current value.
Further, if this absolute value is still between the second voltage threshold and the first voltage threshold, mobile terminal can reduce the charging current value of this mobile terminal again, until the difference between charging voltage value corresponding to charging current value after the current reduction charging voltage value corresponding with the charging current value after the last time reduces is less than Second Threshold, and then determine that the charge power that the charging current value after last reduction is corresponding is maximum charge power.
S212, this mobile terminal increase this first charging current value, obtain the 3rd charging current value of this mobile terminal.
In the embodiment of the present invention, when judging that this first absolute value is less than this second voltage threshold, show that the charging working point of this mobile terminal in this prior under charging current value is in the left side of desirable best operating point, therefore, this mobile terminal can increase charging current further on the basis of this first charging current value, makes the charging current value after increasing be the 3rd charging current value.
3rd charging voltage value of S213, this mobile terminal that this acquisition for mobile terminal the 3rd charging current value is corresponding.
S214, this mobile terminal calculate the 3rd absolute value of the difference of this first charging voltage value and the 3rd charging voltage value.
In the embodiment of the present invention, after the 3rd charging voltage value that acquisition for mobile terminal is corresponding to the 3rd charging current value, this mobile terminal can calculate the 3rd absolute value of the difference between the first charging voltage value and the 3rd charging voltage value.Wherein, the mode of the 3rd charging voltage value that acquisition for mobile terminal the 3rd charging current value is corresponding, the mode of first charging voltage value corresponding with its acquisition first charging current value is identical, and the embodiment of the present invention repeats no more.
S215, this mobile terminal judge whether the 3rd absolute value is less than this first voltage threshold, and are greater than this second voltage threshold.
In the embodiment of the present invention, after the 3rd absolute value of difference calculating this first charging voltage value and the 3rd charging voltage value, the 3rd absolute value and the first voltage threshold and the second voltage threshold can compare by this mobile terminal.
Concrete, when this mobile terminal judges that the 3rd absolute value is less than this first voltage threshold and is greater than this second voltage threshold, this mobile terminal just can determine that the charge power that this first charging current value is corresponding is maximum charge power, and controls this mobile terminal and charge with this first charging current value; When this mobile terminal judges that the 3rd absolute value is less than this second voltage threshold, this mobile terminal will continue to increase charging current value, until when the absolute value of the difference of charging voltage value corresponding to charging current value after the current increase charging voltage value corresponding with the charging current value after the last time increases is between the first voltage threshold and the second voltage threshold, this mobile terminal just can determine that the charge power that the charging current value after last increase is corresponding is maximum charge power; When this mobile terminal judges that the 3rd absolute value is greater than this first voltage threshold, this mobile terminal can do this first charging current value and reduce process, and the amplitude of the Amplitude Ratio increase charging current value of reduction is little.
If S216 the 3rd absolute value is less than this first voltage threshold and is greater than this second voltage threshold, this mobile terminal determines that the charge power that this first charging current value is corresponding is maximum charge power, and controls this mobile terminal and charge with this first charging current value.
In the embodiment of the present invention, when judging that the 3rd absolute value is less than this first voltage threshold and is greater than this second voltage threshold, this mobile terminal using charge power corresponding for this first charging current value as maximum charge power, and can control this mobile terminal with this first charging current value externally DC power supply power taking (namely charging).
In the embodiment of the present invention, mobile terminal is in its charging process, if when current charging current is less than its expectation charging current, this mobile terminal constantly can adjust current charging current, first can increase charging current, also first charging current can be reduced, until adjust the change in voltage amplitude that a certain charging current is reducing it to be less than the second voltage threshold, and the change in voltage amplitude after it is increased between the first voltage threshold and the second voltage threshold time, just determine that charge power corresponding to this charging current is maximum charge power.So repeatedly charging current value is adjusted, can make mobile terminal in charging process, maximum using electric energy, improve charge efficiency, and the cut-off current that can reduce external dc power is to power consumption.
Refer to Fig. 4, Fig. 4 is the structural representation of a kind of mobile terminal disclosed in the embodiment of the present invention.Wherein, this mobile terminal 400 can comprise smart mobile phone (as Android phone, iOS mobile phone etc.), MP3, MP4, MP5, panel computer, palmtop PC and mobile internet device (MobileInternetDevices, MID), PAD, Intelligent worn device etc., the embodiment of the present invention does not limit.As shown in Figure 4, this mobile terminal 400 can comprise with lower unit:
First acquiring unit 401, for obtaining the present charging current value of this mobile terminal 400.
In the embodiment of the present invention, present charging current value is the input current value of this mobile terminal 400 in charging process, therefore, the first acquiring unit 401 can obtain current charging current value by the charging management chip (charge management circuit or charge management module) of its inside at its charging initial stage.Further, the first acquiring unit 401 also may obtain current charging current value in charging stationary phase, and the embodiment of the present invention does not limit.
First judging unit 402, for judging whether the present charging current value that above-mentioned first acquiring unit 401 gets is less than preset charged current value.
In the embodiment of the present invention, preset charged current value is the desired value of this mobile terminal 400 charging current in charging process, and that is, mobile terminal 400 is at the current value of power taking first in external dc power power taking.Therefore, when the first acquiring unit 401 gets the present charging current value of this mobile terminal 400, the first judging unit 402 can judge whether this present charging current value is less than preset charged current value.If this present charging current value is less than preset charged current value, this mobile terminal 400 just needs to adjust present charging current value, reaches maximum to make the charge power of mobile terminal 400; If this present charging current value is greater than preset charged current value, just illustrate that the current charging current of mobile terminal 400 has reached the desired value of this mobile terminal 400, therefore this mobile terminal 400 can not do any operation.
Increase unit 403, for when above-mentioned first judging unit 402 judges that this present charging current value is less than preset charged current value, increase this present charging current value, obtain the first charging current value of this mobile terminal.
In the embodiment of the present invention, when the first judging unit 402 judges that this present charging current value is less than preset charged current value, just show that mobile terminal 400 is not maximum charge power with the current charge power that present charging current value carries out charging, can also promote current charge power, to reach the maximum utilizationization of electric energy, so this mobile terminal 400 can adjust this present charging current value.
Optionally, increase unit 403 and first can increase present charging current value, obtain the first charging current value of this mobile terminal 400.
Optionally, reduce unit 408 and can also first reduce this present charging current value, obtain the charging current value after a reduction.
Concrete, this mobile terminal 400 is when increasing or reduce present charging current value, mainly adjust in the mode of fine setting, specifically can adjust charging current value with mA level, can also adjust charging current value with uA level, the current value amplitude of each adjustment can be different, also can be to adjust with fixing current value amplitude, and the embodiment of the present invention does not limit.
Second acquisition unit 404, for obtaining the first charging voltage value changing this mobile terminal corresponding to the first charging current value that above-mentioned increase unit 403 obtains.
In the embodiment of the present invention, when increasing unit 403 and present charging current value being increased to the first charging current value, second acquisition unit 404 can corresponding the first charging voltage value obtaining this mobile terminal 400 corresponding to this first charging current value.
In the embodiment of the present invention, the mode that second acquisition unit 404 obtains current value and magnitude of voltage can be undertaken detecting obtaining by the charging management chip of mobile terminal 400.
Computing unit 405, for calculating the current charging voltage value of this mobile terminal corresponding to this present charging current value that the first acquiring unit 401 gets, the first absolute value of the difference of this first charging voltage value got with second acquisition unit 404.
In the embodiment of the present invention, second acquisition unit 404 is after getting the first charging voltage value corresponding to this first charging current value, and computing unit 405 can calculate the first absolute value of the difference between this first charging voltage value that current charging voltage value corresponding to this present charging current value that the first acquiring unit 401 gets and second acquisition unit 404 get.Wherein, can this first absolute value, in order to after judging that this present charging current value is increased to the first charging current value, make the charge power of this mobile terminal 400 reach maximum.
Second judging unit 406, for judging whether this first absolute value that above-mentioned computing unit 405 calculates is less than the first voltage threshold, and is greater than the second voltage threshold.
In the embodiment of the present invention, after computing unit 405 calculates the first absolute value of the difference of this current charging voltage value and this first charging voltage value, this first absolute value and the first voltage threshold and the second voltage threshold can compare by the second judging unit 406.
Concrete, the variation relation figure of current value and magnitude of voltage in charging process shown in composition graphs 1, can find out, suppose that the current charging current of mobile terminal 400 is at cut-off current Near Threshold, if increase charging current value again, charging voltage may exceed because of the power taking electric current of mobile terminal 400 cut-off current threshold value that external dc voltage provides and will be 0V, therefore, at this moment mobile terminal 400 charging voltage value amplitude of variation is comparatively large, so this charging voltage value amplitude of variation can be defined as the first voltage threshold.Further, this first voltage threshold also can in the certain limit of this charging voltage value amplitude of variation, and the embodiment of the present invention does not limit.
Concrete, suppose the breakover point left side (namely present charging current value be less than cut-off current threshold value) of the current charging current of mobile terminal 400 at Fig. 1, if after the current charging current of this mobile terminal 400 is increased to the first charging current value, first charging current value does not reach the working current value of this breakover point, amplitude of variation now between the first charging voltage value and current charging voltage value is more slow, and so the amplitude of variation between this first charging voltage value and current charging voltage value can be defined as the second voltage threshold by this mobile terminal 400.Further, this second voltage threshold also can in the certain limit of this charging voltage value amplitude of variation, and the embodiment of the present invention does not limit.
In the embodiment of the present invention, in conjunction with the above-mentioned description to the first voltage threshold and the second voltage threshold, can know, this first voltage threshold is greater than this second voltage threshold.
In specific implementation, when the second judging unit 406 judges that this first absolute value is less than the first voltage threshold and is greater than the second voltage threshold, control unit 407 tentatively can determine that the charging working point corresponding to present charging current value of this mobile terminal 400 is in breakover point and dotted line as shown in Figure 1 and realizes between intersection point (i.e. desirable best operating point and minimum working point).Therefore, control unit 407 can using charging work corresponding for this present charging current value as maximum charge power.When the second judging unit 406 judges that this first absolute value is not between the second voltage threshold and the first voltage threshold, this mobile terminal 400 can do the operation of other adjustment charging current values.
Control unit 407, for when above-mentioned second judging unit 406 judges that this first absolute value is less than this first voltage threshold and is greater than this second voltage threshold, determine that the charge power that this present charging current value is corresponding is maximum charge power, and control this mobile terminal and charge with present charging current value.
In the embodiment of the present invention, when the second judging unit 406 judges that this first absolute value is less than the first voltage threshold and is greater than the second voltage threshold, control unit 407 using charge power corresponding for this present charging current value as maximum charge power, and can control this mobile terminal 400 with the externally DC power supply power taking of this present charging current value (namely charging).
Optionally, control unit 407 determines that the charge power that this present charging current value is corresponding is the concrete mode of maximum charge power and can is:
Reduce this present charging current value, obtain the 4th charging current value of this mobile terminal 400;
Obtain the 4th charging voltage value of this mobile terminal 400 corresponding to the 4th charging current value;
Calculate the 4th absolute value of the difference of this current charging voltage value and the 4th charging voltage value;
Judge whether the 4th absolute value is less than this first voltage threshold, and be greater than this second voltage threshold;
If the 4th absolute value is less than this second voltage threshold, then determine that the charge power that this present charging current value is corresponding is maximum charge power.
In specific implementation, when the second judging unit 406 judges that this first absolute value is less than the first voltage threshold and is greater than the second voltage threshold, control unit 407 tentatively can determine that the charge power corresponding to present charging current value of this mobile terminal 400 is maximum charge power.But in order to verify the accuracy of this present charging current value further, control unit 407 can again on the basis of present charging current value, reduce this present charging current value, obtain the 4th charging current value, and then judge that the amplitude of variation (i.e. the 4th absolute value) of the 4th charging voltage value that the 4th charging current value is corresponding and this current charging voltage value is whether also between this first voltage threshold and second voltage threshold.If the 4th absolute value is less than the second voltage threshold, show that this mobile terminal 400 working point under current charging current is in the breakover point (near desirable best operating point) shown in Fig. 1, therefore, control unit 407 just can determine that the charge power corresponding to current charging current is maximum charge power further; And if the 4th absolute value is be greater than the second voltage threshold and be less than the first voltage threshold equally, so just show that this mobile terminal 400 working point under current charging current is in the right side of desirable best operating point, therefore, control unit 407 can continue the charging current value reducing this mobile terminal 400.
As a kind of feasible execution mode, this mobile terminal 400 can also comprise:
Reduce unit 408, for when above-mentioned second judging unit 406 judges that this first absolute value is greater than this first voltage threshold, reduce this present charging current value, obtain the second charging current value of this mobile terminal.
In the embodiment of the present invention, when the second judging unit 406 judges that this first absolute value is greater than this first voltage threshold, show that the charging working point of this mobile terminal 400 under present charging current value is between desirable best operating point and minimum working point, therefore, reduce unit 408 and can reduce this present charging current value, obtain the second charging current value of this mobile terminal 400.
In the embodiment of the present invention, second acquisition unit 404, also for obtaining the second charging voltage value of this mobile terminal 400 corresponding to this second charging current value that above-mentioned reduction unit 408 obtains.
Concrete, when reducing unit 408 and reducing this present charging current value to the second charging current value, second acquisition unit 404 can corresponding the second charging voltage value obtaining this mobile terminal 400 corresponding to this second charging current value.
Concrete, the mode that second acquisition unit 404 obtains current value and magnitude of voltage can be undertaken detecting obtaining by the charging management chip of mobile terminal 400.
In the embodiment of the present invention, computing unit 405, also for calculating this current charging voltage value that the first acquiring unit 401 gets, the second absolute value of the difference of this second charging voltage value got with second acquisition unit 404.
Concrete, second acquisition unit 404 is after getting the second charging voltage value, and computing unit 405 can calculate the second absolute value of the difference of deserving between current charging voltage value corresponding to front charging current value and this second charging voltage value.Wherein, can this second absolute value in order to after judging that this present charging current value is decreased to the second charging current value, make the charge power of this mobile terminal 400 reach maximum equally.
In the embodiment of the present invention, the second judging unit 406, also for judging whether this second absolute value is less than this first voltage threshold, and is greater than this second voltage threshold.
Concrete, after computing unit 405 calculates the second absolute value of the difference of this current charging voltage value and this second charging voltage value, the second judging unit 406 is understood and this second absolute value and the first voltage threshold and the second voltage threshold is compared.
Concrete, when the second judging unit 406 judges that this second absolute value is less than this first voltage threshold and is greater than this second voltage threshold, control unit 407 just can determine that the charge power that this second charging current value is corresponding is maximum charge power, and controls this mobile terminal 400 and charge with this second charging current value; When the second judging unit 406 judges that this second absolute value is less than this second voltage threshold, increase unit 403 and will increase this present charging current value again, the amplitude this time increasing this present charging current value is less than increases the amplitude that present charging current value is increased to the first charging current value by unit 403.
In the embodiment of the present invention, control unit 407, also for when above-mentioned second judging unit 406 judges that this second absolute value is less than this first voltage threshold and is greater than this second voltage threshold, determine that the charge power that this second charging current value is corresponding is maximum charge power, and control this mobile terminal 400 and charge with this second charging current value.
Concrete, when the second judging unit 406 judges that this second absolute value is less than this first voltage threshold and is greater than this second voltage threshold, control unit 407 using charge power corresponding for this second charging current value as maximum charge power, and can control this mobile terminal 400 with this second charging current value externally DC power supply power taking (namely charging).
Optionally, control unit 407 determines that charge power that this second charging current value is corresponding is the concrete mode of maximum charge power and can is: control unit 407 is on the basis of the second charging current value, reduce this second charging current value, then charging voltage value corresponding for the charging current value after reduction and the second charging voltage value are compared, calculate the absolute value of the difference between them, and judge whether this absolute value is also between this second voltage threshold and first voltage threshold.If this absolute value is less than the second voltage threshold, so control unit 407 just can determine that this charge power corresponding to the second charging current value is maximum charge power, and then with the power taking from external dc power of the second charging current value.
Further, if this absolute value is still between the second voltage threshold and the first voltage threshold, control unit 407 can reduce the charging current value of this mobile terminal 400 again, until the difference between charging voltage value corresponding to charging current value after the current reduction charging voltage value corresponding with the charging current value after the last time reduces is less than Second Threshold, and then determine that the charge power that the charging current value after last reduction is corresponding is maximum charge power.
As the execution mode that another kind is feasible, increase unit 403, also for when the second judging unit 406 judges that this first absolute value is less than the second voltage threshold, increase this first charging current value, obtain the 3rd charging current value of this mobile terminal 400.
Concrete, when the second judging unit 406 judges that this first absolute value is less than this second voltage threshold, show that the charging working point of this mobile terminal 400 in this prior under charging current value is in the left side of desirable best operating point, therefore, increase unit 403 and on the basis of this first charging current value, charging current can be increased further, make the charging current value after increasing be the 3rd charging current value.
In the embodiment of the present invention, second acquisition unit 404, also for obtaining the 3rd charging voltage value of this mobile terminal 400 corresponding to the 3rd charging current value.
In the embodiment of the present invention, computing unit 405, also for calculating the 3rd absolute value of the difference of this first charging voltage value and the 3rd charging voltage value.
Concrete, after second acquisition unit 404 gets the 3rd charging voltage value corresponding to the 3rd charging current value, computing unit 405 can calculate the 3rd absolute value of the difference between the first charging voltage value and the 3rd charging voltage value.Wherein, second acquisition unit 404 obtains the mode of the 3rd charging voltage value corresponding to the 3rd charging current value, and the mode of first charging voltage value corresponding with its acquisition first charging current value is identical, and the embodiment of the present invention repeats no more.
In the embodiment of the present invention, the second judging unit 406, also for judging whether the 3rd absolute value is less than this first voltage threshold, and is greater than this second voltage threshold.
Concrete, after computing unit 405 calculates the 3rd absolute value of the difference of this first charging voltage value and the 3rd charging voltage value, the second judging unit 406 is understood and the 3rd absolute value and the first voltage threshold and the second voltage threshold is compared.
Concrete, when the second judging unit 406 judges that the 3rd absolute value is less than this first voltage threshold and is greater than this second voltage threshold, control unit 407 just can determine that the charge power that this first charging current value is corresponding is maximum charge power, and controls this mobile terminal and charge with this first charging current value; When the second judging unit 406 judges that the 3rd absolute value is less than this second voltage threshold, increase unit 403 will continue to increase charging current value, until when the absolute value of the difference of charging voltage value corresponding to charging current value after the current increase charging voltage value corresponding with the charging current value after the last time increases is between the first voltage threshold and the second voltage threshold, control unit 407 just can determine that the charge power that the charging current value after last increase is corresponding is maximum charge power; When the second judging unit 406 judges that the 3rd absolute value is greater than this first voltage threshold, reducing unit 408 can do reduction process to this first charging current value, and the amplitude of the Amplitude Ratio increase charging current value of reduction is little.
In the embodiment of the present invention, control unit 407, also for when above-mentioned second judging unit 406 judges that the 3rd absolute value is less than this first voltage threshold and is greater than this second voltage threshold, determine that the charge power that this first charging current value is corresponding is maximum charge power, and control this mobile terminal 400 and charge with this first charging current value.
Concrete, when the second judging unit 406 judges that the 3rd absolute value is less than this first voltage threshold and is greater than this second voltage threshold, control unit 407 using charge power corresponding for this first charging current value as maximum charge power, and can control this mobile terminal with this first charging current value externally DC power supply power taking (namely charging).
In the embodiment of the present invention, mobile terminal is in its charging process, if when current charging current is less than its expectation charging current, this mobile terminal constantly can adjust current charging current, first can increase charging current, also first charging current can be reduced, until adjust the change in voltage amplitude that a certain charging current is reducing it to be less than the second voltage threshold, and the change in voltage amplitude after it is increased between the first voltage threshold and the second voltage threshold time, just determine that charge power corresponding to this charging current is maximum charge power.Mobile terminal is when charging current value is less than desired value, by repeatedly adjusting charging current value, the charge power of the mobile terminal made is maximum, so not only can improve the charge efficiency of mobile terminal, the waste of energy in charging process can also be reduced, and reduce external charger to the heat dissipation capacity in mobile terminal charging process.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-OnlyMemory, ROM) or random store-memory body (RandomAccessMemory, RAM) etc.
Above disclosedly be only present pre-ferred embodiments, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.

Claims (8)

1. a charging management method, is applied to mobile terminal, it is characterized in that, comprising:
Obtain the present charging current value of described mobile terminal;
Judge whether described present charging current value is less than preset charged current value;
If described present charging current value is less than described preset charged current value, then increase described present charging current value, obtain the first charging current value of described mobile terminal;
Obtain the first charging voltage value of described mobile terminal corresponding to described first charging current value;
Calculate the first absolute value of the current charging voltage value of described mobile terminal corresponding to described present charging current value and the difference of described first charging voltage value;
Judge whether described first absolute value is less than the first voltage threshold, and be greater than the second voltage threshold, wherein, described first voltage threshold is greater than described second voltage threshold;
If described first absolute value is less than described first voltage threshold, and be greater than described second voltage threshold, then determine that the charge power that described present charging current value is corresponding is maximum charge power, and control described mobile terminal and charge with described present charging current value.
2. method according to claim 1, is characterized in that, described method also comprises:
If described first absolute value is greater than described first voltage threshold, then reduce described present charging current value, obtain the second charging current value of described mobile terminal;
Obtain the second charging voltage value of described mobile terminal corresponding to described second charging current value;
Calculate the second absolute value of the current charging voltage value of described mobile terminal corresponding to described present charging current value and the difference of described second charging voltage value;
Judge whether described second absolute value is less than described first voltage threshold, and be greater than described second voltage threshold;
If described second absolute value is less than described first voltage threshold, and be greater than described second voltage threshold, then determine that the charge power that described second charging current value is corresponding is maximum charge power, and control described mobile terminal and charge with described second charging current value.
3. method according to claim 1, is characterized in that, described method also comprises:
If described first absolute value is less than described second voltage threshold, then increase described first charging current value, obtain the 3rd charging current value of described mobile terminal;
Obtain the 3rd charging voltage value of described mobile terminal corresponding to described 3rd charging current value;
Calculate the 3rd absolute value of the difference of described first charging voltage value and described 3rd charging voltage value;
Judge whether described 3rd absolute value is less than described first voltage threshold, and be greater than described second voltage threshold;
If described 3rd absolute value is less than described first voltage threshold, and be greater than described second voltage threshold, then determine that the charge power that described first charging current value is corresponding is maximum charge power, and control described mobile terminal and charge with described first charging current value.
4. method according to claim 1, is characterized in that, the described charge power determining that described present charging current value is corresponding is maximum charge power, comprising:
Reduce described present charging current value, obtain the 4th charging current value of described mobile terminal;
Obtain the 4th charging voltage value of described mobile terminal corresponding to described 4th charging current value;
Calculate the 4th absolute value of the difference of described current charging voltage value and described 4th charging voltage value;
Judge whether described 4th absolute value is less than described first voltage threshold, and be greater than described second voltage threshold;
If described 4th absolute value is less than described second voltage threshold, then determine that the charge power that described present charging current value is corresponding is maximum charge power.
5. a mobile terminal, is characterized in that, comprising:
First acquiring unit, for obtaining the present charging current value of described mobile terminal;
First judging unit, for judging whether described present charging current value is less than preset charged current value;
Increase unit, for when the result judged of described first judging unit is as being, increasing described present charging current value, obtaining the first charging current value of described mobile terminal;
Second acquisition unit, for obtaining the first charging voltage value of described mobile terminal corresponding to described first charging current value;
Computing unit, for calculating the current charging voltage value of described mobile terminal corresponding to described present charging current value that described first acquiring unit gets, the first absolute value of the difference of described first charging voltage value got with described second acquisition unit;
Second judging unit, for judging whether described first absolute value is less than the first voltage threshold, and be greater than the second voltage threshold, wherein, described first voltage threshold is greater than described second voltage threshold;
Control unit, for judging that described first absolute value is less than described first voltage threshold at described second judging unit, and when being greater than described second voltage threshold, determine that the charge power that described present charging current value is corresponding is maximum charge power, and control described mobile terminal and charge with described present charging current value.
6. mobile terminal according to claim 5, is characterized in that, described mobile terminal also comprises:
Reduce unit, for when described second judging unit judges that described first absolute value is greater than described first voltage threshold, reduce described present charging current value, obtain the second charging current value of described mobile terminal;
Wherein, described second acquisition unit, also for obtaining the second charging voltage value of described mobile terminal corresponding to described second charging current value;
Described computing unit, also for calculating the current charging voltage value of described mobile terminal corresponding to described present charging current value that described first acquiring unit gets, the second absolute value of the difference of described second charging voltage value got with described second acquisition unit;
Described second judging unit, also for judging whether described second absolute value is less than described first voltage threshold, and is greater than described second voltage threshold;
Described control unit, also for judging that described second absolute value is less than described first voltage threshold at described second judging unit, and when being greater than described second voltage threshold, determine that the charge power that described second charging current value is corresponding is maximum charge power, and control described mobile terminal and charge with described second charging current value.
7. mobile terminal according to claim 5, is characterized in that,
Described increase unit, also for when described second judging unit judges that described first absolute value is less than described second voltage threshold, increases described first charging current value, obtains the 3rd charging current value of described mobile terminal;
Described second acquisition unit, also for obtaining the 3rd charging voltage value of described mobile terminal corresponding to described 3rd charging current value;
Described computing unit, also for calculating the 3rd absolute value of the difference of described first charging voltage value and described 3rd charging voltage value;
Described second judging unit, also for judging whether described 3rd absolute value is less than described first voltage threshold, and is greater than described second voltage threshold;
Described control unit, also for judging that at described second judging unit described 3rd absolute value is less than described first voltage threshold, and when being greater than described second voltage threshold, determine that the charge power that described first charging current value is corresponding is maximum charge power, and control described mobile terminal and charge with described first charging current value.
8. mobile terminal according to claim 5, is characterized in that, described control unit determines that charge power that described present charging current value is corresponding is the concrete mode of maximum charge power and is:
Reduce described present charging current value, obtain the 4th charging current value of described mobile terminal;
Obtain the 4th charging voltage value of described mobile terminal corresponding to described 4th charging current value;
Calculate the 4th absolute value of the difference of described current charging voltage value and described 4th charging voltage value;
Judge whether described 4th absolute value is less than described first voltage threshold, and be greater than described second voltage threshold;
If described 4th absolute value is less than described second voltage threshold, then determine that the charge power that described present charging current value is corresponding is maximum charge power.
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CN113039873A (en) * 2018-12-03 2021-06-25 Oppo广东移动通信有限公司 Heat dissipation device, charging equipment, electronic equipment, charging system and method thereof
CN113039873B (en) * 2018-12-03 2023-08-11 Oppo广东移动通信有限公司 Heat dissipation device, charging equipment, electronic equipment, charging system and method thereof
WO2021031779A1 (en) * 2019-08-22 2021-02-25 中兴通讯股份有限公司 Charging method, terminal, and computer readable storage medium
CN111175654A (en) * 2020-01-13 2020-05-19 广州小鹏汽车科技有限公司 Power battery charging remaining time calculation method and device, vehicle and storage medium
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