CN105098882A - Input current distribution method and device - Google Patents
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- CN105098882A CN105098882A CN201510375527.7A CN201510375527A CN105098882A CN 105098882 A CN105098882 A CN 105098882A CN 201510375527 A CN201510375527 A CN 201510375527A CN 105098882 A CN105098882 A CN 105098882A
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Abstract
The invention discloses input current distribution method and device, and belongs to the field of charging design. The input current distribution method comprises the following steps: calculating first input current required by a first charging management chip when outputting first output current, and second input current required by a second charging management chip when outputting second output current; acquiring first input current and second input current for obtaining the minimal total input current; and determining the first input current corresponding to the minimal total input current to be the input current of the first charging management chip, and determining the second input current corresponding to the minimal total input current to be the input current of the second charging management chip. According to the input current distribution method and device, the problem that the total charging efficiency of these charging management chips cannot reach the optimal charging efficiency due to the distribution mode of equally distributing the input current is solved, so that the efficiency of each charging management chip reaches the optimal state as much as possible according to the efficiency current distribution of the charging management chips.
Description
Technical field
The disclosure relates to charging design field, particularly a kind of input current distribution method and device.
Background technology
In order to improve charge efficiency, shorten the duration of charging, a lot of producer proposes the concept of parallel charging, namely utilizes at least two charging management chips in parallel simultaneously for battery charges.
When parallel charging, the common input current method of salary distribution is be distributed equally the input current of each charging management chip, such as, when total charging current is 1A, the input current of charge side by side two charging management chips is all set to 0.5A; Also such as, when total charging current is 1A, the input current of four of parallel charging charging management chips is all set to 0.25A.Because the performance of different charging management chips is different, the mean allocation input current method of salary distribution can cause total charge efficiency of these charging management chips not reach best charge efficiency.
Summary of the invention
The disclosure provides a kind of input current distribution method and device.Described technical scheme is as follows:
According to the first aspect of disclosure embodiment, provide a kind of input current distribution method, be applied to and comprise in the charging circuit of the first charging management chip and the second charging management chip charged side by side, described method comprises:
First output current corresponding with described first charging management chip is determined according to predetermined way, and second output current corresponding with described second charging management chip, described first output current and described second output current sum are predetermined total output current, and described predetermined total output current is used for for the battery in described charging circuit charges;
Calculate the first input current that described first charging management chip needs when exporting described first output current, and the second input current that described second charging management chip needs when exporting described second output current;
Calculate described first input current and described second input current sum, obtain total input current;
Obtain the first input current and the second input current for obtaining minimum described total input current;
Described first input current corresponding with described minimum total input current is defined as the input current of described first charging management chip, described second input current corresponding with described minimum total input current is defined as the input current of described second charging management chip.
Optionally, the first input current that described first charging management chip of described calculating needs when exporting described first output current, and the second input current that described second charging management chip needs when exporting described second output current, comprising:
According to the first computing formula, calculate described first input current;
According to the second computing formula, calculate described second input current;
Wherein, described first computing formula is: Vin1*Iin1*P1=Vout1*Iout1, described Vin1, described Iin1, described Vout1 and described Iout1 are respectively the first input voltage of described first charging management chip, described first input current, the first output voltage and described first output current, and described P1 is the efficiency of described first charging management chip when exporting described first output current and described first output voltage;
Described second computing formula is: Vin2*Iin2*P2=Vout2*Iout2, described Vin2, described Iin2, Vout2 and described Iout2 are respectively the second input voltage of described second charging management chip, described second input current, the second output voltage and described second output current, described P2 is the efficiency of described second charging management chip when exporting described second output current and described second output voltage, and Vin1=Vin2, Vout1=Vout2.
Optionally, described method also comprises:
After learning predetermined described first output voltage and described first output current determined, according to the first predetermined corresponding relation, inquire about the efficiency corresponding with described first output voltage and described first output current, described first corresponding relation is the first output voltage, the first output current and the described first charging management chip efficiency when exporting described first output voltage and described first output current;
After learning predetermined described second output voltage and described second output current determined, according to the second predetermined corresponding relation, inquire about the efficiency corresponding with described second output voltage and described second output current, described second corresponding relation is the second output voltage, the second output current and the described second charging management chip efficiency when exporting described second output voltage and described second output current.
Optionally, described method also comprises:
Obtain described first corresponding relation and described second corresponding relation that prestore; Or,
According to the first model of described first charging management chip, obtain described first corresponding relation corresponding with described first model from server; According to the second model of described second charging management chip, obtain described second corresponding relation corresponding with described second model from described server.
Optionally, the initial value I1 of described first output current is set to 0, the initial value I2 of described second output current is set to total output current, describedly determine first output current corresponding with described first charging management chip according to predetermined way, and second output current corresponding with described second charging management chip, comprising:
Carry out value to described first output current and described first output current successively, for i-th value, being I1+i* Δ I by described first output current value, is I2-i* Δ I by described second output current value, until n-th value;
Wherein, first output current described in when described n-th value be less than described total output current and (n+1)th value time described in the first output current be more than or equal to described total output current, i, n be greater than 0 natural number, Δ I is the value being greater than 0 and being less than described total output current.
According to the second aspect of disclosure embodiment, provide a kind of input current distributor, be applied to and comprise in the charging circuit of the first charging management chip and the second charging management chip charged side by side, described device comprises:
First determination module, be configured to determine first output current corresponding with described first charging management chip according to predetermined way, and second output current corresponding with described second charging management chip, described first output current and described second output current sum are predetermined total output current, and described predetermined total output current is used for for the battery in described charging circuit charges;
First computing module, be configured to the first input current that described first charging management chip of calculating needs when exporting described first output current that described first determination module is determined, and the second input current that described second charging management chip needs when exporting described second output current that described first determination module is determined;
Second computing module, is configured to calculate described first input current determined of described first computing module and described second input current sum, obtains total input current;
Acquisition module, is configured to obtain the first input current and the second input current for obtaining minimum described total input current;
Second determination module, be configured to the input current described first input current corresponding with described minimum total input current being defined as described first charging management chip, described second input current corresponding with described minimum total input current be defined as the input current of described second charging management chip.
Optionally, described first computing module, comprising:
First calculating sub module, is configured to according to the first computing formula, calculates described first input current;
First calculating sub module, is configured to according to the second computing formula, calculates described second input current;
Wherein, described first computing formula is: Vin1*Iin1*P1=Vout1*Iout1, described Vin1, described Iin1, described Vout1 and described Iout1 are respectively the first input voltage of described first charging management chip, described first input current, the first output voltage and described first output current, and described P1 is the efficiency of described first charging management chip when exporting described first output current and described first output voltage;
Described second computing formula is: Vin2*Iin2*P2=Vout2*Iout2, described Vin2, described Iin2, Vout2 and described Iout2 are respectively the second input voltage of described second charging management chip, described second input current, the second output voltage and described second output current, described P2 is the efficiency of described second charging management chip when exporting described second output current and described second output voltage, and Vin1=Vin2, Vout1=Vout2.
Optionally, described device also comprises:
First enquiry module, be configured to after learning predetermined described first output voltage and described first output current determined, according to the first predetermined corresponding relation, inquire about the efficiency corresponding with described first output voltage and described first output current, described first corresponding relation is the first output voltage, the first output current and the described first charging management chip efficiency when exporting described first output voltage and described first output current;
Second enquiry module, be configured to after learning predetermined described second output voltage and described second output current determined, according to the second predetermined corresponding relation, inquire about the efficiency corresponding with described second output voltage and described second output current, described second corresponding relation is the second output voltage, the second output current and the described second charging management chip efficiency when exporting described second output voltage and described second output current.
Optionally, described device also comprises:
First obtains submodule, is configured to obtain described first corresponding relation and described second corresponding relation that prestore; Or,
Second obtains submodule, is configured to the first model according to described first charging management chip, obtains described first corresponding relation corresponding with described first model from server; According to the second model of described second charging management chip, obtain described second corresponding relation corresponding with described second model from described server.
Optionally, the initial value I1 of described first output current is set to 0, the initial value I2 of described second output current is set to total output current, comprises:
Described first determination module, carrying out value to described first output current and described first output current successively, for i-th value, is I1+i* Δ I by described first output current value, be I2-i* Δ I by described second output current value, until n-th value;
Wherein, first output current described in when described n-th value be less than described total output current and (n+1)th value time described in the first output current be more than or equal to described total output current, i, n be greater than 0 natural number, Δ I is the value being greater than 0 and being less than described total output current.
According to the third aspect of disclosure embodiment, provide a kind of input current distributor, be applied to and comprise in the charging circuit of the first charging management chip and the second charging management chip charged side by side, described device comprises:
Processor;
For storing the memory of described processor executable;
Wherein, described processor is configured to:
First output current corresponding with described first charging management chip is determined according to predetermined way, and second output current corresponding with described second charging management chip, described first output current and described second output current sum are predetermined total output current, and described predetermined total output current is used for for the battery in described charging circuit charges;
Calculate the first input current that described first charging management chip needs when exporting described first output current, and the second input current that described second charging management chip needs when exporting described second output current;
Calculate described first input current and described second input current sum, obtain total input current;
Obtain the first input current and the second input current for obtaining minimum described total input current;
Described first input current corresponding with described minimum total input current is defined as the input current of described first charging management chip, described second input current corresponding with described minimum total input current is defined as the input current of described second charging management chip.
The technical scheme that embodiment of the present disclosure provides can comprise following beneficial effect:
By determining that the output current of each charging management chip calculates input current, and the input current of each charging management chip is distributed by minimum total input current, because the performance of different charging management chips is different, corresponding input current is also different, solves the mean allocation input current method of salary distribution and total charge efficiency of these charging management chips can be caused not reach the problem of best charge efficiency; Efficiency current according to charging management chip distributes, and allows the efficiency of each charging management chip reach the effect of optimum state as much as possible.
Should be understood that, it is only exemplary that above general description and details hereinafter describe, and can not limit the disclosure.
Accompanying drawing explanation
Accompanying drawing to be herein merged in specification and to form the part of this specification, shows and meets embodiment of the present disclosure, and is used from specification one and explains principle of the present disclosure.
Fig. 1 is the schematic diagram of the charging circuit involved by a kind of input current distribution method according to exemplary partial embodiment;
Fig. 2 A is the flow chart of a kind of input current distribution method according to an exemplary embodiment;
Fig. 2 B is the flow chart of a kind of input current distribution method according to another exemplary embodiment;
Fig. 2 C is the flow chart of the input current that calculating two charging management chips according to an exemplary embodiment need when exporting and specifying output current;
Fig. 2 D be charging management chip according to an exemplary embodiment under identical output voltage, the schematic diagram of the efficiency corresponding to different output current;
Fig. 2 E be charging management chip according to an exemplary embodiment under identical output voltage, the broken line graph of the efficiency corresponding to different output current;
Fig. 3 is the block diagram of a kind of input current distributor according to an exemplary embodiment;
Fig. 4 is the block diagram of a kind of input current distributor according to another exemplary embodiment;
Fig. 5 is the block diagram of a kind of mobile device according to an exemplary embodiment.
Embodiment
Here will be described exemplary embodiment in detail, its sample table shows in the accompanying drawings.When description below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawing represents same or analogous key element.Execution mode described in following exemplary embodiment does not represent all execution modes consistent with the disclosure.On the contrary, they only with as in appended claims describe in detail, the example of apparatus and method that aspects more of the present disclosure are consistent.
Fig. 1 is the schematic diagram of the charging circuit involved by a kind of input current distribution method according to exemplary partial embodiment, as shown in Figure 1, this implementation environment can comprise processor 10, first charging management chip 11, second charging management chip 12 and battery 13.
Processor 10 is connected with the first charging management chip 11 and the second charging management chip 12 respectively.
First charging management chip 11 is connected side by side with the second charging management chip 12, and is connected with battery 13 respectively, and to charge to battery 13, the first charging management chip 11 and the second charging management chip 12 can be identical or different.
First charging management chip 11 and the second charging management chip 12 have identical input voltage.
Fig. 2 A is the flow chart of a kind of input current distribution method according to an exemplary embodiment, as shown in Figure 2 A, this current distribution method can be applied in the charging circuit shown in Fig. 1, preferably, this current distribution method can be applied in the processor 10 in the charging circuit shown in Fig. 1, comprises the following steps.
In step 201, first output current corresponding with the first charging management chip is determined according to predetermined way, and second output current corresponding with the second charging management chip, first output current and the second output current sum are predetermined total output current, and predetermined total output current is used for for the battery in charging circuit charges.
In step 202., calculate the first input current that the first charging management chip needs when output the first output current, and the second input current that the second charging management chip needs when output the second output current.
In step 203, calculate the first input current and the second input current sum, obtain total input current.
In step 204, the first input current for obtaining minimum total input current and the second input current is obtained.
In step 205, first input current corresponding with minimum total input current is defined as the input current of the first charging management chip, second input current corresponding with minimum total input current is defined as the input current of the second charging management chip.
In sum, the input current distribution method provided in disclosure embodiment, by determining that the output current of each charging management chip calculates input current, and the input current of each charging management chip is distributed by minimum total input current, because the performance of different charging management chips is different, corresponding input current is also different, solves the mean allocation input current method of salary distribution and total charge efficiency of these charging management chips can be caused not reach the problem of best charge efficiency; Efficiency current according to charging management chip distributes, and allows the efficiency of each charging management chip reach the effect of optimum state as much as possible.
Fig. 2 B is the flow chart of a kind of input current distribution method according to another exemplary embodiment, as shown in Figure 2 B, this current distribution method can be applied in the charging circuit shown in Fig. 1, preferably, this current distribution method can be applied in the processor 10 in the charging circuit shown in Fig. 1, comprises the following steps.
In step 301, after learning the first predetermined output voltage and the first output current of determining, according to the first predetermined corresponding relation, the efficiency corresponding with the first output voltage and the first output current is inquired about.
In step 302, after learning the second predetermined output voltage and the second output current of determining, according to the second predetermined corresponding relation, the efficiency corresponding with the second output voltage and the second output current is inquired about.
In actual applications, the total current (i.e. total output current of the first charging management chip and the second charging management chip) inputing to battery is normally fixed, such as 2A, and the voltage (i.e. the output voltage of the first charging management chip and the second charging management chip) inputing to battery is also fixing, such as 3.6V.
In order to effect when charging to battery can be adjusted, can when ensure to input to battery total current and input to the voltage of battery fixing, be reduced to total input current of the charging management chip of battery charging as much as possible.
Here the first said corresponding relation comprises the first output voltage, the first output current and the first charging management chip efficiency when output first output voltage and the first output current.
In like manner, the second said here corresponding relation can comprise the second output voltage, the second output current and the second charging management chip efficiency when output second output voltage and the second output current.
In actual applications, for different charging management chips, the chamber of commerce of chip factory provides the efficiency of this charging management chip when exporting different electric currents and different voltage, is also above-mentioned first corresponding relation or the second corresponding relation.
Processor in charging circuit is knowing that the mode of above-mentioned first corresponding relation and the second corresponding relation comprises the following two kinds mode:
Under first kind of way, obtain the first corresponding relation and the second corresponding relation that prestore.
Each output voltage, output current and charging management chip efficiency under this output voltage and output current corresponding to charging management chip model can be recorded in processor.
Under the second way, according to the first model of the first charging management chip, obtain first corresponding relation corresponding with the first model from server; According to the second model of the second charging management chip, obtain second corresponding relation corresponding with the second model from server.
When mobile device is in networking state, processor can according to the corresponding relation corresponding with model stored in the charging management chip model querying server got.
When actual realization, the form of the first corresponding relation and the second corresponding relation can have multiple, with the first corresponding relation, such as, first corresponding relation can be one group of corresponding relation in the form that provides of chip manufacturer, and in form, each group corresponding relation comprises the first output voltage, the first output current and the first charging management chip efficiency when output first output voltage and the first output current.
Processor or memory can prestore each charging management chip model that chip manufacturer provides, and the corresponding relation corresponding to often kind of signal, processor can obtain the corresponding relation corresponding with this model according to charging management chip model, and when determining output current and output voltage, search the efficiency with output current and output voltage.
In step 303, first output current corresponding with the first charging management chip is determined according to predetermined way, and second output current corresponding with the second charging management chip, first output current and the second output current sum are predetermined total output current, and predetermined total output current is used for for the battery in charging circuit charges.
In a kind of possible implementation, still see Fig. 2 B, step 303 also comprises:
Carry out value to the first output current and the first output current successively, for i-th value, being I1+i* Δ I by the first output current value, is I2-i* Δ I by the second output current value, until n-th value;
Wherein, when n-th value the first output current be less than total output current and (n+1)th value time the first output current be more than or equal to total output current, i, n be greater than 0 natural number, Δ I is the value being greater than 0 and being less than total output current.
For example, when the output current sum of the first charging management chip and the second charging management chip is 2A, if the predetermined value of the first output current of the first charging management chip is 0, the predetermined value of the second output current of the second charging management chip is also 2, output current changing value is Δ I, when the first predetermined way is for increasing scheduled current, second predetermined way is for reducing scheduled current, now, when first time value, first output current value of the first charging management chip is 0+ Δ I, and the output current value of the second charging management chip is 2-Δ I.When second time value, the first output current value of the first charging management chip is 0+2 Δ I, and the output current value of the second charging management chip is 2-2 Δ I.
The like, when i-th value, the first output current value of the first charging management chip is 0+i* Δ I, and the output current value of the second charging management chip is 2-i* Δ I, and wherein, i* Δ I is less than 1.In general, Δ I can value be the multiple of 0.1A or 0.1A, and obviously, the value of Δ I is less, and the minimum total input current finally obtained can be less, and also namely the efficiency of charging management chip is better.、
Such as, as Δ I=0.7A:
First time value i=1, the output current of the first charging management chip is: I1+i* Δ I=0+1*0.7=0.7A, 0.7A<2A, then processor continues value, i+1;
Second time value i=2, the output current of the first charging management chip is: I1+i* Δ I=0+2*0.7=1.4A, 1.4A<2A, then processor continues value, i+1;
Third time value i=3, the output current of the first charging management chip is: I1+i* Δ I=0+3*0.7=2.1A, 2.1>2A, then processor stops value, n=i-1=2.
Accordingly, in the process of value, the value of the output current of the first charging management chip is greater than total output current, so the value of the output current of the second charging management chip will inevitably be less than 0, obvious is like this irrational, so except carrying out except value using the first charging current as reference item, also can carry out value using the second charging current as with reference to item, then step 303 also can comprise:
Carry out value to the second output current and the second output current successively, for i-th value, being I2-i* Δ I by the second output current value, is I1+i* Δ I by the first output current value, until n-th value;
Wherein, when n-th value the second output current be greater than 0 and (n+1)th value time the second output current be less than or equal to 0, i, n be greater than 0 natural number, Δ I is the value being greater than 0 and being less than total output current.
When often obtaining one group of first output current and the second output current, all calculate once total input current.Specifically see step 304 to step 305.
In step 304, calculate the first input current that the first charging management chip needs when output the first output current, and the second input current that the second charging management chip needs when output the second output current.
In a kind of possible implementation, the step 304 in Fig. 2 B can be replaced with step 304a further to step 304b.Refer to shown in Fig. 2 C, it is the flow chart of the input current that calculating two charging management chips according to an exemplary embodiment need when exporting and specifying output current, and as shown in Figure 2 C, this input current distribution method comprises the steps.
In step 304a, according to the first computing formula, calculate the first input current, first computing formula is: Vin1*Iin1*P1=Vout1*Iout1, Vin1, Iin1, Vout1 and Iout1 are respectively the first input voltage of the first charging management chip, the first input current, the first output voltage and the first output current, and P1 is the efficiency of the first charging management chip when output first output current and the first output voltage.
In step 304b, according to the second computing formula, calculate the second input current, second computing formula is: Vin2*Iin2*P2=Vout2*Iout2, Vin2, Iin2, Vout2 and Iout2 are respectively the second input voltage of the second charging management chip, the second input current, the second output voltage and the second output current, P2 is the efficiency of the second charging management chip when output second output current and the second output voltage, and Vin1=Vin2, Vout1=Vout2.
Such as, all 3.6V is required with the first output voltage Vout1 and the second output voltage Vout2, first input voltage vin 1 and the second input voltage vin 2 are 5V, output current and for 2A be example, when dividing output current equally, first output current Iout1 and the second output current Iout2 is 1A, refer to Fig. 2 D, it is that charging management chip according to an exemplary embodiment is under identical output voltage, the schematic diagram of the efficiency corresponding to different output current, as shown in Figure 2 D, utilize table lookup first charging management chip and the second charging management chip when output voltage 3.6V, corresponding efficiency when output current is 1A is known, P1 is 91%, P2 is 86%, can be learnt by the first computing formula Vin1*Iin1*P1=Vout1*Iout1:
Iin1=(Vout1*Iout1)/(Vin1*P1)=(3.6V*1A)/(5V*91%)=0.7912A; Can be learnt by the second computing formula Vin2*Iin2*P2=Vout2*Iout2:
Iin2＝(Vout2*Iout2)/(Vin2*P2)＝(3.6V*1A)/(5V*86％)＝0.8372A；
Namely the input current of the first charging management chip is 0.7912A, and the input current of the second charging management chip is 0.8372A.
For another example, still all require 3.6V with the first output voltage Vout1 and the second output voltage Vout2, first input voltage vin 1 and the second input voltage vin 2 are 5V, output current and for 2A be example, if the first output current is (Iout1+ Δ I), so the second output current (Iout2-Δ I), when Δ I is 0.1A, search the efficiency corresponding with the first output current 1.1A and the second output current 0.9A and be respectively P1=92%, P2=85%, can be learnt by the first computing formula Vin1*Iin1*P1=Vout1*Iout1:
Iin1=(Vout1* (Iout1+ Δ I))/(Vin1*P1)=(3.6V*1.1A)/(5V*92%)=0.8609A; Can be learnt by the second computing formula Vin2*Iin2*P2=Vout2*Iout2:
Iin2＝(Vout2*(Iout2-ΔI))/(Vin2*P2)＝(3.6V*0.9A)/(5V*85％)＝0.7624A；
Namely the input current of the first charging management chip is 0.8609A, and the input current of the second charging management chip is 0.7624A.
Next time to the first output current Iout1 and the second output current Iout2 value time, then continue current first output current to increase Δ I, by the second current output current minimizing Δ I.
Refer to Fig. 2 E, it is that charging management chip according to an exemplary embodiment is under identical output voltage, the broken line graph of the efficiency corresponding to different output current, also be the broken line schematic diagram corresponding with Fig. 2 D, as shown in Figure 2 E, all 3.6V is required with the first output voltage Vout1 and the second output voltage Vout2, it is example that first input voltage vin 1 and the second input voltage vin 2 are 5V, if f is (I, V) be input current, wherein I is output current, V is output voltage, when the output current of the first charging management chip is 1.1A, most effective, known, when 0.9<Iout1≤1.1, f1 (I, V) be increasing function, as 1.1≤Iout1<1.2, f1 (I, V) be subtraction function, and the broken line graph of the second charging management chip becomes an increasing function, i.e. f2 (I, V) in 0.9≤Iout2≤1.2, this interval is large and become large with the change of electric current, therefore point two intervals carry out calculating total input current f1 (I, V)+f2 (I, V), first interval is that input current is between 0.9 to 1.1, second interval is that input current is between 1.1 to 1.2.
It should be noted that, Fig. 2 E is only schematic diagram, and in actual applications, the display form of f (I, V) is not limited to straight line tendency or broken line tendency, and may be also rule or the irregular tendencies such as curve, the present embodiment limit this.
In step 305, calculate the first input current and the second input current sum, obtain total input current.
Within step 306, the first input current for obtaining minimum total input current and the second input current is obtained.
Still see Fig. 2 D, when dividing electric current equally and being all 1A, P1=91%, P2=86%, then Iin1=0.7912A, Iin2=0.8372A, total input current I1=Iin1+Iin2=1.6284A; Work as Iout1=1.1A, during Iout2=0.9A, P1=92%, P2=85%, then Iin1A=0.8609, Iin2=0.7624A, total input current I2=Iin1+Iin2=1.6233A.
Because input current is less, when exporting identical total current and voltage, efficiency is higher, from two result I1>I2, so the scheme that the second distributes electric current is higher than the whole efficiency of the first.
If Iout1 is adjusted to 1.2A, Iout2 is adjusted to 0.8A, then P1=91%, P2=84%.Then total input current I3=Iin1+Iin2=0.9495+0.6857=1.6352A, from I3>I1>I2, the model of each charging management chip is different, total input current does not present increasing or decreasing change to regulate each output current to draw according to certain rules, or also may not present linear change.So all distribution condition of total output current (when namely total output current is fixed, the various combinations of the first output current and the second output current) all will be taken into account, decide the combination that corresponding total input current is minimum.
In step 307, first input current corresponding with minimum total input current is defined as the input current of the first charging management chip, second input current corresponding with minimum total input current is defined as the input current of the second charging management chip.
Because each total input current is all obtained by the first input current and the second input current sum, therefore the first input current when calculating minimum total input current and the second input current can be determined, and using the first input current of determining input current as the first charging management chip, using the second input current of determining input current as the first charging management chip, to charge to battery.
In sum, the input current distribution method provided in disclosure embodiment, by determining that the output current of each charging management chip calculates input current, and the input current of each charging management chip is distributed by minimum total input current, because the performance of different charging management chips is different, corresponding input current is also different, solves the mean allocation input current method of salary distribution and total charge efficiency of these charging management chips can be caused not reach the problem of best charge efficiency; Efficiency current according to charging management chip distributes, and allows the efficiency of each charging management chip reach the effect of optimum state as much as possible.
In addition, learning predetermined output voltage and after determining output current, according to predetermined corresponding relation, inquire about the efficiency corresponding with output voltage output current, determine the input current formula of each charging management chip, calculate each and rush electric managing chip under identical output voltage, the input current corresponding to different output current.
Following is disclosure device embodiment, may be used for performing disclosure embodiment of the method.For the details do not disclosed in disclosure device embodiment, please refer to disclosure embodiment of the method.
Fig. 3 is the block diagram of a kind of input current distributor according to an exemplary embodiment, as shown in Figure 3, this input current distributor is applied in charging circuit shown in Fig. 1, and this input current distributor includes but not limited to: the first determination module 401, first computing module 402, second computing module 403, acquisition module 404 and the second determination module 405.
First determination module 401, be configured to determine first output current corresponding with the first charging management chip according to predetermined way, and second output current corresponding with the second charging management chip, first output current and the second output current sum are predetermined total output current, and predetermined total output current is used for for the battery in charging circuit charges;
First computing module 402, be configured to the first input current that calculating first charging management chip needs when the first output current that output first determination module 401 is determined, and the second input current that the second charging management chip needs when the second output current that output first determination module 401 is determined;
Second computing module 403, is configured to the first input current that calculating first computing module 402 calculates and the second input current sum, obtains total input current;
Acquisition module 404, is configured to obtain the first input current and the second input current for obtaining minimum total input current;
Second determination module 405, be configured to the input current first input current corresponding with minimum total input current being defined as the first charging management chip, second input current corresponding with minimum total input current be defined as the input current of the second charging management chip.
In a kind of possible implementation, refer to Fig. 4, it is the block diagram of a kind of input current distributor according to another exemplary embodiment, and as shown in Figure 4, this input current distributor can also comprise: the first acquisition module 406 and the second acquisition module 407.
First acquisition module 406, is configured to obtain the first corresponding relation and the second corresponding relation that prestore; Or,
Second acquisition module 407, is configured to the first model according to the first charging management chip, obtains first corresponding relation corresponding with the first model from server; According to the second model of the second charging management chip, obtain second corresponding relation corresponding with the second model from server.
In a kind of possible implementation, still shown in Figure 4, the initial value I1 of the first output current is set to 0, the initial value I2 of the second output current is set to total output current, the first determination module 401, also can be configured to:
Carry out value to the first output current and the first output current successively, for i-th value, being I1+i* Δ I by the first output current value, is I2-i* Δ I by the second output current value, until n-th value;
Wherein, when n-th value the first output current be less than total output current and (n+1)th value time the first output current be more than or equal to total output current, i, n be greater than 0 natural number, Δ I is the value being greater than 0 and being less than total output current.
In a kind of possible implementation, still shown in Figure 4, the first computing module 402, can also comprise: the first calculating sub module 402a, the second calculating sub module 402b.
First calculating sub module 402a, is configured to, according to the first computing formula, calculate the first input current;
Second calculating sub module 402b, is configured to, according to the second computing formula, calculate the second input current;
Wherein, first computing formula is: Vin1*Iin1*P1=Vout1*Iout1, Vin1, Iin1, Vout1 and Iout1 are respectively the first input voltage of the first charging management chip, the first input current, the first output voltage and the first output current, and P1 is the efficiency of the first charging management chip when output first output current and the first output voltage;
Second computing formula is: Vin2*Iin2*P2=Vout2*Iout2, Vin2, Iin2, Vout2 and Iout2 are respectively the second input voltage of the second charging management chip, the second input current, the second output voltage and the second output current, P2 is the efficiency of the second charging management chip when output second output current and the second output voltage, and Vin1=Vin2, Vout1=Vout2.
In a kind of possible implementation, still shown in Figure 4, this input current distributor can also comprise: the first enquiry module 408 and the second enquiry module 409.
First enquiry module 408, be configured to after learning the first predetermined output voltage and the first output current of determining, according to the first predetermined corresponding relation, inquire about the efficiency corresponding with the first output voltage and the first output current, the first corresponding relation is the first output voltage, the first output current and the first charging management chip efficiency when output first output voltage and the first output current;
Second enquiry module 409, be configured to after learning the second predetermined output voltage and the second output current of determining, according to the second predetermined corresponding relation, inquire about the efficiency corresponding with the second output voltage and the second output current, the second corresponding relation is the second output voltage, the second output current and the second charging management chip efficiency when output second output voltage and the second output current.
In sum, the disclosure implements the input current distributor provided, by determining that the output current of each charging management chip calculates input current, and the input current of each charging management chip is distributed by minimum total input current, because the performance of different charging management chips is different, corresponding input current is also different, solves the mean allocation input current method of salary distribution and total charge efficiency of these charging management chips can be caused not reach the problem of best charge efficiency; Efficiency current according to charging management chip distributes, and allows the efficiency of each charging management chip reach the effect of optimum state as much as possible.
In addition, learning predetermined output voltage and after determining output current, according to predetermined corresponding relation, inquire about the efficiency corresponding with output voltage output current, determine the input current formula of each charging management chip, calculate each and rush electric managing chip under identical output voltage, the input current corresponding to different output current.
About the device in above-described embodiment, wherein the concrete mode of modules executable operations has been described in detail in about the embodiment of the method, will not elaborate explanation herein.
The disclosure one exemplary embodiment provides a kind of input current distributor, can realize the input current distribution method that the disclosure provides, and this input current distributor comprises: processor, memory for storage of processor executable instruction;
Wherein, processor is configured to:
First output current corresponding with the first charging management chip is determined according to predetermined way, and second output current corresponding with the second charging management chip, first output current and the second output current sum are predetermined total output current, and predetermined total output current is used for for the battery in charging circuit charges;
Calculate the first input current that the first charging management chip needs when output the first output current, and the second input current that the second charging management chip needs when output the second output current;
Calculate the first input current and the second input current sum, obtain total input current;
Obtain the first input current and the second input current for obtaining minimum total input current;
First input current corresponding with minimum total input current is defined as the input current of the first charging management chip, second input current corresponding with minimum total input current is defined as the input current of the second charging management chip.
Fig. 5 is the block diagram of a kind of mobile device according to an exemplary embodiment.Such as, mobile device 500 can be mobile phone, computer, digital broadcast terminal, messaging devices, game console, flat-panel devices, Medical Devices, body-building equipment, personal digital assistant etc.
With reference to Fig. 5, device 500 can comprise following one or more assembly: processing components 502, memory 504, power supply module 506, multimedia groupware 508, audio-frequency assembly 510, I/O (I/O) interface 512, sensor cluster 514, and communications component 516.
The integrated operation of the usual control device 500 of processing components 502, such as with display, call, data communication, camera operation and record operate the operation be associated.Processing components 502 can comprise one or more processor 518 to perform instruction, to complete all or part of step of above-mentioned method.In addition, processing components 502 can comprise one or more module, and what be convenient between processing components 502 and other assemblies is mutual.Such as, processing components 502 can comprise multi-media module, mutual with what facilitate between multimedia groupware 508 and processing components 502.
Memory 504 is configured to store various types of data to be supported in the operation of device 500.The example of these data comprises the instruction of any application program for operating on device 500 or method, contact data, telephone book data, message, picture, video etc.Memory 504 can be realized by the volatibility of any type or non-volatile memory device or their combination, as static RAM (SRAM), Electrically Erasable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory EPROM (EPROM), programmable read only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, disk or CD.
The various assemblies that power supply module 506 is device 500 provide electric power.Power supply module 506 can comprise power-supply management system, one or more power supply, and other and the assembly generating, manage and distribute electric power for device 500 and be associated.
Multimedia groupware 508 is included in the screen providing an output interface between device 500 and user.In certain embodiments, screen can comprise liquid crystal display (LCD) and touch panel (TP).If screen comprises touch panel, screen may be implemented as touch-screen, to receive the input signal from user.Touch panel comprises one or more touch sensor with the gesture on sensing touch, slip and touch panel.Touch sensor can the border of not only sensing touch or sliding action, but also detects the duration relevant with touch or slide and pressure.In certain embodiments, multimedia groupware 508 comprises a front-facing camera and/or post-positioned pick-up head.When device 500 is in operator scheme, during as screening-mode or video mode, front-facing camera and/or post-positioned pick-up head can receive outside multi-medium data.Each front-facing camera and post-positioned pick-up head can be fixing optical lens systems or have focal length and optical zoom ability.
Audio-frequency assembly 510 is configured to export and/or input audio signal.Such as, audio-frequency assembly 510 comprises a microphone (MIC), and when device 500 is in operator scheme, during as call model, logging mode and speech recognition mode, microphone is configured to receive external audio signal.The audio signal received can be stored in memory 504 further or be sent via communications component 516.In certain embodiments, audio-frequency assembly 510 also comprises a loud speaker, for output audio signal.
I/O interface 512 is for providing interface between processing components 502 and peripheral interface module, and above-mentioned peripheral interface module can be keyboard, some striking wheel, button etc.These buttons can include but not limited to: home button, volume button, start button and locking press button.
Sensor cluster 514 comprises one or more transducer, for providing the state estimation of various aspects for device 500.Such as, sensor cluster 514 can detect the opening/closing state of device 500, the relative positioning of assembly, such as assembly is display and the keypad of device 500, the position of all right checkout gear 500 of sensor cluster 514 or device 500 1 assemblies changes, the presence or absence that user contacts with device 500, the variations in temperature of device 500 orientation or acceleration/deceleration and device 500.Sensor cluster 514 can comprise proximity transducer, be configured to without any physical contact time detect near the existence of object.Sensor cluster 514 can also comprise optical sensor, as CMOS or ccd image sensor, for using in imaging applications.In certain embodiments, this sensor cluster 514 can also comprise acceleration transducer, gyro sensor, Magnetic Sensor, pressure sensor or temperature sensor.
Communications component 516 is configured to the communication being convenient to wired or wireless mode between device 500 and other equipment.Device 500 can access the wireless network based on communication standard, as Wi-Fi, 2G or 3G, or their combination.In one exemplary embodiment, communications component 516 receives from the broadcast singal of external broadcasting management system or broadcast related information via broadcast channel.In one exemplary embodiment, communications component 516 also comprises near-field communication (NFC) module, to promote junction service.Such as, can based on radio-frequency (RF) identification (RFID) technology in NFC module, Infrared Data Association (IrDA) technology, ultra broadband (UWB) technology, bluetooth (BT) technology and other technologies realize.
In the exemplary embodiment, device 500 can be realized, for performing above-mentioned input current distribution method by one or more application specific integrated circuit (ASIC), digital signal processor (DSP), digital signal processing appts (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), controller, microcontroller, microprocessor or other electronic components.
In the exemplary embodiment, additionally provide a kind of non-transitory computer-readable recording medium comprising instruction, such as, comprise the memory 504 of instruction, above-mentioned instruction can perform above-mentioned input current distribution method by the processor 518 of device 500.Such as, non-transitory computer-readable recording medium can be ROM, random access memory (RAM), CD-ROM, tape, floppy disk and optical data storage devices etc.
In the disclosure, mobile device 500 comprises above-mentioned input current distributor, such as, can be arranged on by input current distributor in processing components 502 or processor 518, this input current distributor can be adjusted to the charging current of at least two power management chips that power supply module 506 charges.
Those skilled in the art, at consideration specification and after putting into practice invention disclosed herein, will easily expect other embodiment of the present disclosure.The application is intended to contain any modification of the present disclosure, purposes or adaptations, and these modification, purposes or adaptations are followed general principle of the present disclosure and comprised the undocumented common practise in the art of the disclosure or conventional techniques means.Specification and embodiment are only regarded as exemplary, and true scope of the present disclosure and spirit are pointed out by claim below.
Should be understood that, the disclosure is not limited to precision architecture described above and illustrated in the accompanying drawings, and can carry out various amendment and change not departing from its scope.The scope of the present disclosure is only limited by appended claim.
Claims (11)
1. an input current distribution method, is characterized in that, be applied to and comprise in the charging circuit of the first charging management chip and the second charging management chip charged side by side, described method comprises:
First output current corresponding with described first charging management chip is determined according to predetermined way, and second output current corresponding with described second charging management chip, described first output current and described second output current sum are predetermined total output current, and described predetermined total output current is used for for the battery in described charging circuit charges;
Calculate the first input current that described first charging management chip needs when exporting described first output current, and the second input current that described second charging management chip needs when exporting described second output current;
Calculate described first input current and described second input current sum, obtain total input current;
Obtain the first input current and the second input current for obtaining minimum described total input current;
Described first input current corresponding with described minimum total input current is defined as the input current of described first charging management chip, described second input current corresponding with described minimum total input current is defined as the input current of described second charging management chip.
2. method according to claim 1, it is characterized in that, the first input current that described first charging management chip of described calculating needs when exporting described first output current, and the second input current that described second charging management chip needs when exporting described second output current, comprising:
According to the first computing formula, calculate described first input current;
According to the second computing formula, calculate described second input current;
Wherein, described first computing formula is: Vin1*Iin1*P1=Vout1*Iout1, described Vin1, described Iin1, described Vout1 and described Iout1 are respectively the first input voltage of described first charging management chip, described first input current, the first output voltage and described first output current, and described P1 is the efficiency of described first charging management chip when exporting described first output current and described first output voltage;
Described second computing formula is: Vin2*Iin2*P2=Vout2*Iout2, described Vin2, described Iin2, Vout2 and described Iout2 are respectively the second input voltage of described second charging management chip, described second input current, the second output voltage and described second output current, described P2 is the efficiency of described second charging management chip when exporting described second output current and described second output voltage, and Vin1=Vin2, Vout1=Vout2.
3. method according to claim 2, is characterized in that, described method also comprises:
After learning predetermined described first output voltage and described first output current determined, according to the first predetermined corresponding relation, inquire about the efficiency corresponding with described first output voltage and described first output current, described first corresponding relation is the first output voltage, the first output current and the described first charging management chip efficiency when exporting described first output voltage and described first output current;
After learning predetermined described second output voltage and described second output current determined, according to the second predetermined corresponding relation, inquire about the efficiency corresponding with described second output voltage and described second output current, described second corresponding relation is the second output voltage, the second output current and the described second charging management chip efficiency when exporting described second output voltage and described second output current.
4. method according to claim 3, is characterized in that, described method also comprises:
Obtain described first corresponding relation and described second corresponding relation that prestore; Or,
According to the first model of described first charging management chip, obtain described first corresponding relation corresponding with described first model from server; According to the second model of described second charging management chip, obtain described second corresponding relation corresponding with described second model from described server.
5. according to described method arbitrary in Claims 1-4, it is characterized in that, the initial value I1 of described first output current is set to 0, the initial value I2 of described second output current is set to total output current, describedly determine first output current corresponding with described first charging management chip according to predetermined way, and second output current corresponding with described second charging management chip, comprising:
Carry out value to described first output current and described first output current successively, for i-th value, being I1+i* Δ I by described first output current value, is I2-i* Δ I by described second output current value, until n-th value;
Wherein, first output current described in when described n-th value be less than described total output current and (n+1)th value time described in the first output current be more than or equal to described total output current, i, n be greater than 0 natural number, Δ I is the value being greater than 0 and being less than described total output current.
6. an input current distributor, is characterized in that, be applied to and comprise in the charging circuit of the first charging management chip and the second charging management chip charged side by side, described device comprises:
First determination module, be configured to determine first output current corresponding with described first charging management chip according to predetermined way, and second output current corresponding with described second charging management chip, described first output current and described second output current sum are predetermined total output current, and described predetermined total output current is used for for the battery in described charging circuit charges;
First computing module, be configured to the first input current that described first charging management chip of calculating needs when exporting described first output current that described first determination module is determined, and the second input current that described second charging management chip needs when exporting described second output current that described first determination module is determined;
Second computing module, is configured to calculate described first input current determined of described first computing module and described second input current sum, obtains total input current;
Acquisition module, is configured to obtain the first input current and the second input current for obtaining minimum described total input current;
Second determination module, be configured to the input current described first input current corresponding with described minimum total input current being defined as described first charging management chip, described second input current corresponding with described minimum total input current be defined as the input current of described second charging management chip.
7. device according to claim 6, is characterized in that, described first computing module, comprising:
First calculating sub module, is configured to according to the first computing formula, calculates described first input current;
First calculating sub module, is configured to according to the second computing formula, calculates described second input current;
Wherein, described first computing formula is: Vin1*Iin1*P1=Vout1*Iout1, described Vin1, described Iin1, described Vout1 and described Iout1 are respectively the first input voltage of described first charging management chip, described first input current, the first output voltage and described first output current, and described P1 is the efficiency of described first charging management chip when exporting described first output current and described first output voltage;
Described second computing formula is: Vin2*Iin2*P2=Vout2*Iout2, described Vin2, described Iin2, Vout2 and described Iout2 are respectively the second input voltage of described second charging management chip, described second input current, the second output voltage and described second output current, described P2 is the efficiency of described second charging management chip when exporting described second output current and described second output voltage, and Vin1=Vin2, Vout1=Vout2.
8. device according to claim 7, is characterized in that, described device also comprises:
First enquiry module, be configured to after learning predetermined described first output voltage and described first output current determined, according to the first predetermined corresponding relation, inquire about the efficiency corresponding with described first output voltage and described first output current, described first corresponding relation is the first output voltage, the first output current and the described first charging management chip efficiency when exporting described first output voltage and described first output current;
Second enquiry module, be configured to after learning predetermined described second output voltage and described second output current determined, according to the second predetermined corresponding relation, inquire about the efficiency corresponding with described second output voltage and described second output current, described second corresponding relation is the second output voltage, the second output current and the described second charging management chip efficiency when exporting described second output voltage and described second output current.
9. device according to claim 8, is characterized in that, described device also comprises:
First obtains submodule, is configured to obtain described first corresponding relation and described second corresponding relation that prestore; Or,
Second obtains submodule, is configured to the first model according to described first charging management chip, obtains described first corresponding relation corresponding with described first model from server; According to the second model of described second charging management chip, obtain described second corresponding relation corresponding with described second model from described server.
10., according to described device arbitrary in claim 6 to 9, it is characterized in that, the initial value I1 of described first output current is set to 0, and the initial value I2 of described second output current is set to total output current, and described device also comprises:
Described first determination module, carrying out value to described first output current and described first output current successively, for i-th value, is I1+i* Δ I by described first output current value, be I2-i* Δ I by described second output current value, until n-th value;
Wherein, first output current described in when described n-th value be less than described total output current and (n+1)th value time described in the first output current be more than or equal to described total output current, i, n be greater than 0 natural number, Δ I is the value being greater than 0 and being less than described total output current.
11. 1 kinds of input current distributors, is characterized in that, be applied to and comprise in the charging circuit of the first charging management chip and the second charging management chip charged side by side, described device comprises:
Processor;
For storing the memory of described processor executable;
Wherein, described processor is configured to:
First output current corresponding with described first charging management chip is determined according to predetermined way, and second output current corresponding with described second charging management chip, described first output current and described second output current sum are predetermined total output current, and described predetermined total output current is used for for the battery in described charging circuit charges;
Calculate the first input current that described first charging management chip needs when exporting described first output current, and the second input current that described second charging management chip needs when exporting described second output current;
Calculate described first input current and described second input current sum, obtain total input current;
Obtain the first input current and the second input current for obtaining minimum described total input current;
Described first input current corresponding with described minimum total input current is defined as the input current of described first charging management chip, described second input current corresponding with described minimum total input current is defined as the input current of described second charging management chip.
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