CN106574948A - Electrical power estimating method and terminal - Google Patents

Electrical power estimating method and terminal Download PDF

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Publication number
CN106574948A
CN106574948A CN201580042849.8A CN201580042849A CN106574948A CN 106574948 A CN106574948 A CN 106574948A CN 201580042849 A CN201580042849 A CN 201580042849A CN 106574948 A CN106574948 A CN 106574948A
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electricity
battery
internal resistance
value
ratio value
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CN106574948B (en
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李金奎
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Secondary Cells (AREA)
  • Tests Of Electric Status Of Batteries (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

An electrical power estimating method and terminal. The electrical power estimating method comprises: acquiring a first electrical power ratio of a remaining battery electrical power at a current time to an initial battery electrical power; querying, from a relationship table of a preset electrical power ratio and an open circuit voltage, a first open circuit voltage corresponding to the first electrical power ratio; calculating, according to an output voltage, an output current and the first open circuit voltage measured at the current time, a first internal resistance of a battery at the current time; querying, from a relationship table of a preset electrical power ratio and battery internal resistance, a second internal resistance corresponding to the first electrical power ratio, and calculating an internal resistance ratio of the first internal resistance to the second internal resistance; and amending, according to the internal resistance ratio, the first electrical power ratio, and acquiring a second electrical power ratio of an actual remaining battery electrical power to the initial battery electrical power. In this manner, the first electrical power ratio is modified by the internal resistance ratio, and thus improving electrical power estimating precision.

Description

A kind of electricity method of estimation and terminal Technical field
The present invention relates to electronic technology field, more particularly to a kind of electricity method of estimation and terminal.
Background technology
With the development of electronic technology, the terminals such as mobile phone, tablet personal computer, notebook are played an important role in the live and work of people, but, the standby time of these terminals is limited, in order that user makes rational planning for the operational version of terminal in limited standby time, can show the dump energy of battery in time in terminal.In practice, it has been found that terminal display also have dump energy after soon, often will power consumption finish automatic shutdown, bring very big inconvenience to user.Trace it to its cause and be, Current integrating method is used existing electricity method of estimation more, i.e., discharge electricity amount being obtained to obtain dump energy, and with the growth of discharge time according to the constantly accumulation of true electric current, the deviation accumulation value of current measurement can be increasing, so as to cause electricity evaluated error big.
The content of the invention
The embodiment of the invention discloses a kind of electricity method of estimation and terminal, it is possible to increase the accuracy of electricity estimation.
First aspect of the embodiment of the present invention discloses a kind of electricity method of estimation, including：
Obtain the battery dump energy at current time and the first electricity ratio value of battery initial quantity of electricity；
From default electricity ratio value the first open-circuit voltage values corresponding with inquiring about the first electricity ratio value in open-circuit voltage relation table；
The output voltage, output current and first open-circuit voltage values that are measured according to current time calculate the first internal resistance value of current time battery；
From default electricity ratio value the second internal resistance value corresponding with inquiring about the first electricity ratio value in internal resistance of cell relation table, and calculate the internal resistance ratio of first internal resistance value and second internal resistance value；
The first electricity ratio value according to the internal resistance ratio amendment, obtains the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity.
In the first possible implementation of first aspect of the embodiment of the present invention, the first electricity ratio value according to the internal resistance ratio amendment obtains the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity, including：
Can not power consumption using the battery at current time described in the internal resistance ratio calculation；
The battery is subtracted from the battery dump energy can not power consumption, acquisition remaining battery available power；
The battery is subtracted from the battery initial quantity of electricity can not power consumption, the acquisition initial available power of battery；
The ratio of the remaining battery available power and the initial available power of the battery is calculated, the ratio is regard as battery real surplus electricity and the second electricity ratio value of the battery initial quantity of electricity.
With reference to the first possible implementation of first aspect of the embodiment of the present invention, in second of possible implementation of first aspect of the embodiment of the present invention, the battery using current time described in the internal resistance ratio calculation can not power consumption, including：
It is determined that the minimum operational voltage value normally run；
From the default electricity ratio value the 3rd electricity ratio value corresponding with inquiring about the second open-circuit voltage values in open-circuit voltage relation table；
From the default electricity ratio value the 3rd internal resistance value corresponding with inquiring about the 3rd electricity ratio value in internal resistance of cell relation table；
Calculate product between the 3rd internal resistance value, the internal resistance ratio and the output current three and the minimum operational voltage value and value；
Wherein, second open-circuit voltage values are the open-circuit voltage values that minimum is differed with described and value with being found in open-circuit voltage relation table from the default electricity ratio value；
Determine that the battery at the current time can not power consumption according to described and value.
With reference to first aspect of the embodiment of the present invention the first to second of possible implementation, in the third possible implementation of first aspect of the embodiment of the present invention, when the internal resistance ratio is less than zero, the first electricity ratio value according to the internal resistance ratio amendment, the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity is obtained, including：
According to first internal resistance value and second internal resistance value, first open-circuit voltage values are corrected；
From the default electricity ratio value the 4th electricity ratio value corresponding with inquiring about revised first open-circuit voltage values in internal resistance of cell relation table；
The 4th electricity ratio value and the difference of the first electricity ratio value and the product of the battery initial quantity of electricity are calculated, the amendment electricity factor is obtained；
The first electricity ratio value is adjusted using the amendment electricity factor, battery real surplus electricity is obtained With the second electricity ratio value of the battery initial quantity of electricity.
With reference to first aspect of the embodiment of the present invention the first to the third possible implementation, in the 4th kind of possible implementation of first aspect of the embodiment of the present invention, it is described that first open-circuit voltage values are corrected according to first internal resistance value and second internal resistance value, including：
Second internal resistance value and the difference of first internal resistance value and the product of the output current are calculated, open-circuit voltage modifying factor is obtained；
First open-circuit voltage values are subtracted into the open-circuit voltage modifying factor, revised first open-circuit voltage values are obtained.
Second aspect of the embodiment of the present invention discloses a kind of terminal, including：
Acquiring unit, for obtaining the battery dump energy at current time and the first electricity ratio value of battery initial quantity of electricity；
Query unit, for from default electricity ratio value the first open-circuit voltage values corresponding with the first electricity ratio value that the acquiring unit acquisition is inquired about in open-circuit voltage relation table；
Computing unit, the first internal resistance value of current time battery is calculated for the first open-circuit voltage values that the output voltage measured according to current time, output current and the query unit are inquired about；
The query unit, is additionally operable to the second internal resistance value corresponding with the first electricity ratio value that the acquiring unit acquisition is inquired about in internal resistance of cell relation table from default electricity ratio value；
The computing unit, is additionally operable to calculate the internal resistance ratio of first internal resistance value and second internal resistance value；
Amending unit, for the first electricity ratio value according to the internal resistance ratio amendment that the computing unit is calculated, obtains the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity.
In the first possible implementation of second aspect of the embodiment of the present invention, the amending unit includes：
First computation subunit, can not power consumption for the battery using current time described in the internal resistance ratio calculation；
First obtains subelement, can not power consumption, acquisition remaining battery available power for subtracting the battery that first computation subunit is calculated from the battery dump energy；
Second obtains subelement, can not power consumption, the acquisition initial available power of battery for subtracting the battery that first computation subunit is calculated from the battery initial quantity of electricity；
Second computation subunit, the remaining battery available power that subelement is obtained is obtained for calculating described first With the described second ratio for obtaining the initial available power of battery that subelement is obtained, the ratio is regard as battery real surplus electricity and the second electricity ratio value of the battery initial quantity of electricity.
With reference to the first possible implementation of second aspect of the embodiment of the present invention, in second of possible implementation of second aspect of the embodiment of the present invention, first computation subunit includes：
First determining module, for the minimum operational voltage value for determining normally to run；
Enquiry module, for from the default electricity ratio value the 3rd electricity ratio value corresponding with inquiring about the second open-circuit voltage values in open-circuit voltage relation table；
The enquiry module, is additionally operable to the 3rd internal resistance value corresponding with inquiring about the 3rd electricity ratio value in internal resistance of cell relation table from the default electricity ratio value；
First computing module, for calculate the product between the 3rd internal resistance value, the internal resistance ratio and the output current three and the minimum operational voltage value and value；
Wherein, second open-circuit voltage values are the open-circuit voltage values that minimum is differed with described and value with being found in open-circuit voltage relation table from the default electricity ratio value；
Second determining module, determines that the battery at the current time can not power consumption for calculated according to first computing module and value.
With reference to second aspect of the embodiment of the present invention the first to second of possible implementation, in the third possible implementation of second aspect of the embodiment of the present invention, when the internal resistance ratio be less than zero when, the amending unit includes：
Voltage revise subelemen, for according to first internal resistance value and second internal resistance value, correcting first open-circuit voltage values；
Subelement is inquired about, for from the default electricity ratio value the 4th electricity ratio value corresponding with inquiring about revised first open-circuit voltage values in internal resistance of cell relation table；
3rd obtains subelement, the 4th electricity ratio value and the difference of the first electricity ratio value and the product of the battery initial quantity of electricity for calculating the inquiry subelement inquiry, obtains the amendment electricity factor；
4th obtains subelement, for obtaining amendment electricity factor adjustment the first electricity ratio value that subelement is obtained using the described 3rd, obtains the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity.
With reference to second aspect of the embodiment of the present invention the first to the third possible implementation, in the 4th kind of possible implementation of second aspect of the embodiment of the present invention, the voltage revise subelemen includes：
Second computing module, for calculate the difference of second internal resistance value and first internal resistance value with it is described The product of output current, obtains open-circuit voltage modifying factor；
Acquisition module, for first open-circuit voltage values to be subtracted into the open-circuit voltage modifying factor that second computing module is obtained, obtains revised first open-circuit voltage values.
The third aspect of the embodiment of the present invention discloses a kind of computer-readable storage medium, and the computer-readable storage medium has program stored therein, including the step described in foregoing invention embodiment when described program is performed.
Fourth aspect of the embodiment of the present invention discloses a kind of terminal, including：Processor, communication bus, memory and battery；
Wherein, the memory is used for storage program,
The communication bus is used for the communication set up between the processor and the memory；
The processor is used for the program for calling the memory storage, performs following steps：
Obtain the battery dump energy at current time and the first electricity ratio value of battery initial quantity of electricity；
From default electricity ratio value the first open-circuit voltage values corresponding with inquiring about the first electricity ratio value in open-circuit voltage relation table；
The output voltage, output current and first open-circuit voltage values that are measured according to current time calculate the first internal resistance value of current time battery；
From default electricity ratio value the second internal resistance value corresponding with inquiring about the first electricity ratio value in internal resistance of cell relation table, and calculate the internal resistance ratio of first internal resistance value and second internal resistance value；
The first electricity ratio value according to the internal resistance ratio amendment, obtains the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity.
In the first possible implementation of fourth aspect of the embodiment of the present invention, the processor first electricity ratio value according to the internal resistance ratio amendment, when obtaining the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity, following steps are performed：
Can not power consumption using the battery at current time described in the internal resistance ratio calculation；
The battery is subtracted from the battery dump energy can not power consumption, acquisition remaining battery available power；
The battery is subtracted from the battery initial quantity of electricity can not power consumption, the acquisition initial available power of battery；
The ratio of the remaining battery available power and the initial available power of the battery is calculated, the ratio is regard as battery real surplus electricity and the second electricity ratio value of the battery initial quantity of electricity.
With reference to the first possible implementation of fourth aspect of the embodiment of the present invention, in the embodiment of the present invention Four aspect second of possible implementation in, the processor using current time described in the internal resistance ratio calculation battery can not power consumption when, perform following steps：
It is determined that the minimum operational voltage value normally run；
From the default electricity ratio value the 3rd electricity ratio value corresponding with inquiring about the second open-circuit voltage values in open-circuit voltage relation table；
From the default electricity ratio value the 3rd internal resistance value corresponding with inquiring about the 3rd electricity ratio value in internal resistance of cell relation table；
Calculate product between the 3rd internal resistance value, the internal resistance ratio and the output current three and the minimum operational voltage value and value；
Wherein, second open-circuit voltage values are the open-circuit voltage values that minimum is differed with described and value with being found in open-circuit voltage relation table from the default electricity ratio value；
Determine that the battery at the current time can not power consumption according to described and value.
With reference to fourth aspect of the embodiment of the present invention the first to second of possible implementation, in the third possible implementation of fourth aspect of the embodiment of the present invention, when the internal resistance ratio is less than zero, the then processor first electricity ratio value according to the internal resistance ratio amendment, when obtaining the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity, following steps are performed：
According to first internal resistance value and second internal resistance value, first open-circuit voltage values are corrected；
From the default electricity ratio value the 4th electricity ratio value corresponding with inquiring about revised first open-circuit voltage values in internal resistance of cell relation table；
The 4th electricity ratio value and the difference of the first electricity ratio value and the product of the battery initial quantity of electricity are calculated, the amendment electricity factor is obtained；
The first electricity ratio value is adjusted using the amendment electricity factor, the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity is obtained.
With reference to fourth aspect of the embodiment of the present invention the first to the third possible implementation, in the 4th kind of possible implementation of fourth aspect of the embodiment of the present invention, the processor is according to first internal resistance value and second internal resistance value, when correcting first open-circuit voltage values, following steps are performed：
Second internal resistance value and the difference of first internal resistance value and the product of the output current are calculated, open-circuit voltage modifying factor is obtained；
First open-circuit voltage values are subtracted into the open-circuit voltage modifying factor, revised first open-circuit voltage values are obtained.
The embodiment of the present invention can obtain the battery dump energy at current time and the first electricity ratio value of battery initial quantity of electricity；And from default electricity ratio value the first open-circuit voltage values corresponding with inquiring about the first electricity ratio value in open-circuit voltage relation table；The output voltage, output current and the first open-circuit voltage values that are measured according to current time calculate the first internal resistance value of current time battery；From default electricity ratio value the second internal resistance value corresponding with inquiring about the first electricity ratio value in internal resistance of cell relation table, and calculate the internal resistance ratio of the first internal resistance value and the second internal resistance value；According to internal resistance ratio amendment the first electricity ratio value, the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity is obtained.It can be seen that, electricity method of estimation in the embodiment of the present invention can not only avoid the simple error accumulation that the generation of current time electricity ratio value is calculated by Current integrating method, and can avoid the difference due to Experimental modeling and actual environment, only obtain the inaccurate of electricity ratio value with internal resistance of cell relation table by inquiring about default electricity ratio value with open-circuit voltage relation table or default electricity ratio value；The embodiment of the present invention obtains the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity by internal resistance ratio amendment the first electricity ratio value, so as to improve the accuracy of electricity estimation.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, the required accompanying drawing used in embodiment will be briefly described below, apparently, drawings in the following description are some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic flow sheet of electricity method of estimation disclosed in the embodiment of the present invention；
Fig. 2 is the schematic flow sheet of another electricity method of estimation disclosed in the embodiment of the present invention；
Fig. 3 is the schematic flow sheet of another electricity method of estimation disclosed in the embodiment of the present invention；
Fig. 4 is a kind of structural representation of terminal disclosed in the embodiment of the present invention；
Fig. 5 is the structural representation of another terminal disclosed in the embodiment of the present invention；
Fig. 6 is the structural representation of another terminal disclosed in the embodiment of the present invention；
Fig. 7 is the structural representation of another terminal disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of embodiment of the invention, rather than all Embodiment.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
The embodiment of the invention discloses a kind of electricity method of estimation and terminal, it is possible to increase the accuracy of electricity estimation.It is described in detail individually below.
Referring to Fig. 1, Fig. 1 is a kind of schematic flow sheet of electricity method of estimation disclosed in the embodiment of the present invention.As shown in figure 1, the electricity method of estimation may comprise steps of.
S101, terminal obtain the battery dump energy at current time and the first electricity ratio value of battery initial quantity of electricity；
In the embodiment of the present invention, terminal can be mobile phone, notebook and portable set etc., or other are provided with the equipment of battery.
In the embodiment of the present invention, battery initial quantity of electricity is referred to as the initial full capacity of battery or battery rated capacity；First electricity ratio value is used for the state-of-charge (State of Charge, SOC) for indicating battery current time；The battery dump energy at current time can be calculated according to Current integrating method with the first electricity ratio value of battery initial quantity of electricity and obtained, for example, the battery dump energy that last moment terminal is determined and battery initial quantity of electricity Q0Electricity ratio value be SOC1, last moment is T apart from the period at current time, according to the efficiency for charge-discharge of battery, passes through the integral and calculating electricity Q that battery discharges in period T1, then terminal obtains the battery dump energy at current time and the first electricity ratio value SOC=SOC of battery initial quantity of electricity in step S1011-Q1/Q0。
It can be seen that, Current integrating method employed in above-mentioned the first electricity of calculating ratio value does not account for change of the battery in discharge process in itself, and constantly accumulated error using Current integrating method in each period, cause electricity evaluated error big, therefore the first electricity ratio value need to be modified by following steps S102 to S105.
S102, terminal are from default electricity ratio value the first open-circuit voltage values corresponding with inquiring about the first electricity ratio value in open-circuit voltage relation table；
In the embodiment of the present invention, default electricity ratio value with open-circuit voltage relation table is obtained by testing and modeling, the corresponding relation being stored with default the electricity ratio value and open-circuit voltage relation table between the open-circuit voltage of battery and the electricity ratio value of battery.Optionally, the default electricity ratio value in open-circuit voltage relation table with that can also be stored with different temperatures, the corresponding relation between the open-circuit voltage of battery and the electricity ratio value of battery.
Output voltage, output current and the first open-circuit voltage values meter that S103, terminal are measured according to current time Calculate the first internal resistance value of current time battery；
In the embodiment of the present invention, the first internal resistance value that output voltage, output current and the first open-circuit voltage values that terminal is measured according to current time calculate current time battery can be specially：
11) terminal calculates the difference of the output voltage for the battery that the first open-circuit voltage values are measured with current time, and the output current for the battery that the difference divided by current time are measured, and obtains the first internal resistance value of current time battery.
As an example it is assumed that the output voltage of the battery of current time measurement is Volt, output current Cur, the first electricity ratio value SOC that step S101 is obtained1And the first electricity ratio value SOC1Corresponding first open-circuit voltage values OCV1, the first internal resistance value R_Calc of the battery at current time can be calculated by equation below (1)：
R_Calc=(OCV1-Volt)/Cur   (1)
S104, terminal calculate the internal resistance ratio of the first internal resistance value and the second internal resistance value from default electricity ratio value the second internal resistance value corresponding with inquiring about the first electricity ratio value in internal resistance of cell relation table；
In the embodiment of the present invention, default electricity ratio value with internal resistance of cell relation table is obtained by testing and modeling, the corresponding relation being stored with default the electricity ratio value and internal resistance of cell relation table between each electricity ratio value and each internal resistance of cell value of battery.Optionally, the default electricity ratio value in internal resistance of cell value relation table with that can also be stored with different temperatures, the corresponding relation between the electricity ratio value and internal resistance of cell value of battery.
S105, terminal obtain the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity according to internal resistance ratio amendment the first electricity ratio value.
In the embodiment of the present invention, terminal is according to the principle of internal resistance ratio amendment the first electricity ratio value：Assuming that the first electricity ratio value SOC currently calculated1It is accurate, the first internal resistance value reflection that then above-mentioned formula (1) is calculated be with by inquiring about the difference between the second internal resistance value that default electricity ratio value and internal resistance of cell relation table are obtained, tabled look-up by the first internal resistance value amendment of calculating the second internal resistance value of acquisition, so as to which more accurately the battery at calculating current time can not power consumption, final the second electricity ratio value for obtaining battery real surplus electricity and battery initial quantity of electricity.
In the embodiment of the present invention, terminal can also be according to the principle of internal resistance ratio amendment the first electricity ratio value：Assuming that variant between the first electricity ratio value SOC and actual electricity ratio value that currently calculate and the second internal resistance value that obtained by inquiring about default electricity ratio value and internal resistance of cell relation table is accurate, then it is above-mentioned The first internal resistance value reflection that formula (1) is calculated is by inquiring about the difference between default electricity ratio value and the first open-circuit voltage values and the true open-circuit voltage values at current time of the acquisition of open-circuit voltage relation table, first the first open-circuit voltage values of internal resistance value amendment that can be then calculated by formula (1), eventually through revised first open-circuit voltage values amendment the first electricity ratio value, so as to obtain the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity.
In the electricity method of estimation described by Fig. 1, terminal obtains the battery dump energy at current time and the first electricity ratio value of battery initial quantity of electricity first；And from default electricity ratio value the first open-circuit voltage values corresponding with inquiring about the first electricity ratio value in open-circuit voltage relation table；The output voltage, output current and the first open-circuit voltage values that are measured according to current time calculate the first internal resistance value of current time battery；Then, terminal is from default electricity ratio value the second internal resistance value corresponding with inquiring about the first electricity ratio value in internal resistance of cell relation table, and calculates the internal resistance ratio of the first internal resistance value and the second internal resistance value；According to internal resistance ratio amendment the first electricity ratio value, the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity is obtained.
It can be seen that, the electricity method of estimation in the embodiment of the present invention can not only avoid the simple error accumulation that the generation of current time electricity ratio value is calculated by Current integrating method；And can avoid the difference due to Experimental modeling and actual environment, only obtain the inaccurate of electricity ratio value with internal resistance of cell relation table by inquiring about default electricity ratio value with open-circuit voltage relation table or default electricity ratio value；The embodiment of the present invention obtains the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity by internal resistance ratio amendment the first electricity ratio value, so as to improve the accuracy of electricity estimation.
Fig. 2 is referred to, Fig. 2 is the schematic flow sheet of another electricity method of estimation disclosed in the embodiment of the present invention；Wherein, the electricity method of estimation shown in Fig. 2 is to determine that battery can not power consumption and then the first electricity ratio value of amendment by internal resistance ratio.As shown in Fig. 2 the electricity method of estimation may comprise steps of.
S201, terminal obtain the battery dump energy at current time and the first electricity ratio value of battery initial quantity of electricity；
S202, terminal are from default electricity ratio value the first open-circuit voltage values corresponding with inquiring about the first electricity ratio value in open-circuit voltage relation table；
Output voltage, output current and the first open-circuit voltage values that S203, terminal are measured according to current time calculate the first internal resistance value of current time battery；
S204, terminal inquire about the first electricity ratio value from default electricity ratio value and internal resistance of cell relation table Corresponding second internal resistance value, and calculate the internal resistance ratio of the first internal resistance value and second internal resistance value；
In the embodiment of the present invention, step S201 to S204 is identical to S104 contents with step S101 in foregoing invention embodiment, specifically may refer to the description in foregoing invention embodiment, no longer illustrates here.
S205, terminal can not power consumptions using the battery at internal resistance ratio calculation current time；
In the embodiment of the present invention, with the influence of discharge regime where battery and discharge time, the electricity ratio value of battery and the relation of the internal resistance of cell can and the relation of default electricity ratio value and the internal resistance of cell there is deviation, and then, cause each moment battery can not power consumption also change, the battery can not power consumption refer to presence due to the internal resistance of cell, internal resistance has partial pressure so that a part of electricity that can not be exported in battery discharge procedure.Therefore, terminal can adjust the unavailable electricity proportion of battery at current time, reach the amendment to the first electricity ratio value at current time, obtain the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity.
In the embodiment of the present invention, in step S205 terminal using internal resistance ratio calculation current time battery can not power consumption can specifically include following steps：
21) terminal determines the minimum operational voltage value normally run；
22) terminal is from default electricity ratio value the 3rd electricity ratio value corresponding with inquiring about the second open-circuit voltage values in open-circuit voltage relation table；
23) terminal is from default electricity ratio value the 3rd internal resistance value corresponding with inquiring about the 3rd electricity ratio value in internal resistance of cell relation table；
24) terminal calculate product between the 3rd internal resistance value, internal resistance ratio and output current three and minimum operational voltage value and value；Second open-circuit voltage values are the open-circuit voltage values that minimum is differed with this and value with being found in open-circuit voltage relation table from default electricity ratio value；
25) terminal can not power consumption according to the battery with value determination current time.
In the embodiment of the present invention, the battery can not power consumption can be obtained according to the partial pressure that internal resistance is produced when maintaining terminal (or each device in terminal) the minimum operational voltage value that normally run and electric discharge end.Wherein, the partial pressure that the electric discharge end internal resistance that current time calculates is produced can be according to step 22) to step 24) obtain, i.e., the product between the 3rd internal resistance value, internal resistance ratio and output current three is the partial pressure of the electric discharge end internal resistance generation calculated at current time.It can be seen that, as described above, in the embodiment of the present invention, internal resistance value that can not be in power consumption by the internal resistance ratio amendment battery at current time so that the battery that calculates of current time can not power consumption be more nearly actual battery can not power consumption.
For example, if the minimum operational voltage value that each device is normally run in terminal or terminal is 3.2V, in the case where output current is Cur, a minimum open-circuit voltage OCV is searched from default electricity ratio value and open-circuit voltage relation table1, open-circuit voltage OCV1 can be outside the voltage drop that internal resistance is produced, and maintenance output voltage is 3.2V, and inquires about open-circuit voltage values OCV from default electricity ratio value and open-circuit voltage relation table1The 3rd electricity ratio value SOC of correspondence3, the 3rd electricity ratio value SOC is inquired about from default electricity ratio value and internal resistance of cell relation table3Corresponding 3rd internal resistance value R_Calc3, then open-circuit voltage values OCV1The voltage produced in internal resistance is reduced to R_Calc3× Cur, in addition, the deviation that the internal resistance ratio R atio calculated by step S204 reflects the first internal resistance value of calculating between the second internal resistance value for tabling look-up, and the internal resistance that the internal resistance ratio is calculated with electric discharge end under the same conditions differs seldom with the ratio for the internal resistance tabled look-up, table look-up acquisition internal resistance ratio, therefore open-circuit voltage values OCV for the internal resistance ratio amendment electric discharge end that can be calculated by current time1The voltage produced in internal resistance is reduced to Ratio × R_Calc3× Cur, thus battery can not power consumption can be the voltage drop Ratio × R_Calc produced in 3.2V and internal resistance according to minimum operational voltage value3× Cur sums are determined.
S206, terminal subtract battery from battery dump energy can not power consumption, acquisition remaining battery available power；
In the embodiment of the present invention, the battery dump energy obtains for the electric quantity integration method according to described in S101, and therefrom subtracting battery can not power consumption, you can obtain the remaining battery available power at current time.
S207, terminal subtract battery from battery initial quantity of electricity can not power consumption, the acquisition initial available power of battery；
In the embodiment of the present invention, the battery initial quantity of electricity is referred to as the initial full capacity of battery or battery rated capacity, and therefrom subtracting battery can not power consumption, you can obtain the initial available power of battery.
S208, terminal calculate the ratio of remaining battery available power and the initial available power of battery, regard the ratio as battery real surplus electricity and the second electricity ratio value of battery initial quantity of electricity.
In the embodiment of the present invention, by step S205 can calculate in current time battery can not power consumption, remaining battery available power can be obtained by step S206, second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity can be obtained by the step S207 ratios that can obtain terminal calculating remaining battery available power and the initial available power of battery in the initial available power of battery, step S208.
In the electricity method of estimation described by Fig. 2, the ratio amendment battery that the first internal resistance value that terminal is calculated by current time and tabling look-up obtains the second internal resistance value can not internal resistance in power consumption so that battery can not power consumption Closer to actual battery can not power consumption, and then terminal subtracted from battery dump energy the battery can not power consumption, obtain remaining battery available power；The battery is subtracted from battery initial quantity of electricity can not power consumption, the acquisition initial available power of battery；Remaining battery available power is calculated with the ratio of the initial available power of battery as current time battery real surplus electricity and the second electricity ratio value of the battery initial quantity of electricity, it can be seen that, the second electricity ratio value more really reflects the state-of-charge of current time battery, improve the accuracy of electricity estimation, the operational version of terminal so that user can make rational planning for according to the second electricity ratio value.
Referring to Fig. 3, Fig. 3 is the schematic flow sheet of another electricity method of estimation disclosed in the embodiment of the present invention.When the first electricity ratio value that terminal current time is calculated by Current integrating method is less than actual electricity ratio value, the first open-circuit voltage values of acquisition of tabling look-up are likely less than the output voltage of battery, so that the internal resistance ratio of battery is less than zero, now by step 21) to 25) calculate battery can not power consumption also close to zero, so that battery can not power consumption can not play a part of correct the first electricity ratio value,, then can not power consumption amendment the first electricity ratio value by battery and the electricity method of estimation shown in Fig. 3 can be when internal resistance ratio be more than or equal to zero；When internal resistance ratio is less than zero, then the first electricity ratio value can be corrected by correcting open-circuit voltage values, specifically, as shown in figure 3, the electricity method of estimation may comprise steps of.
S301, terminal obtain the battery dump energy at current time and the first electricity ratio value of battery initial quantity of electricity；
S302, terminal are from default electricity ratio value the first open-circuit voltage values corresponding with inquiring about the first electricity ratio value in open-circuit voltage relation table；
Output voltage, output current and the first open-circuit voltage values that S303, terminal are measured according to current time calculate the first internal resistance value of current time battery；
S304, terminal calculate the internal resistance ratio of the first internal resistance value and the second internal resistance value from default electricity ratio value the second internal resistance value corresponding with inquiring about the first electricity ratio value in internal resistance of cell relation table；
In the embodiment of the present invention, step S301 to S304 may be referred to step S101 to S104 elaboration, and I will not elaborate.
S305, terminal judge whether the internal resistance ratio is more than or equal to zero, if so, then performing step S306 to S309；Otherwise, step S310 to S313 is performed.
S306, terminal can not power consumptions using the battery at the internal resistance ratio calculation current time；
S307, terminal subtracted from battery dump energy the battery can not power consumption, obtain remaining battery can use Electricity；
S308, terminal subtract battery from battery initial quantity of electricity can not power consumption, the acquisition initial available power of battery；
S309, terminal calculate the ratio of remaining battery available power and the initial available power of battery, regard the ratio as battery real surplus electricity and the second electricity ratio value of battery initial quantity of electricity；
In the embodiment of the present invention, step S306 to S309 may be referred to being specifically described for step S205 to S208 in foregoing invention embodiment, and I will not elaborate.
S310, terminal correct the first open-circuit voltage values according to the first internal resistance value and the second internal resistance value；
In the embodiment of the present invention, terminal corrects the first open-circuit voltage values, can specifically include following steps according to the first internal resistance value and the second internal resistance value：
31) terminal calculates the product of the difference and current time output current of the second internal resistance value and the first internal resistance value, obtains open-circuit voltage modifying factor；
32) the first open-circuit voltage values are subtracted open-circuit voltage modifying factor by terminal, obtain revised first open-circuit voltage values.
S311, terminal are from default electricity ratio value the 4th electricity ratio value corresponding with inquiring about revised first open-circuit voltage values in internal resistance of cell relation table；
S312, terminal calculate the difference and the product of battery initial quantity of electricity of the 4th electricity ratio value and the first electricity ratio value, obtain the amendment electricity factor；
In the embodiment of the present invention, the battery initial quantity of electricity in step S312 can not consider that battery can not power consumption.
S313, terminal adjust the first electricity ratio value using the amendment electricity factor, obtain the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity.
In the embodiment of the present invention, because internal resistance ratio is less than zero, illustrate that open-circuit voltage is less than output voltage, that is the first electricity ratio value is less than actual electricity ratio value, therefore it can be specially that the first electricity ratio value adds the amendment electricity factor that terminal adjusts the first electricity ratio value using the amendment electricity factor, so as to obtain the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity, it should be noted that, now, it is not necessary to consider that the battery in the first electricity ratio value can not power consumption.
In the electricity method of estimation described by Fig. 3, terminal first determines whether whether the ratio of the first internal resistance value of the calculating at current time and the second internal resistance value of acquisition of tabling look-up is more than or equal to zero, if, the electricity method of estimation that can be then retouched using Fig. 2, can not the electricity ratio of power consumption amendment first by the battery for calculating current time Example value, obtains the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity；If it is not, the first electricity ratio value at the open-circuit voltage amendment current time at amendment current time can be then used, so as to obtain the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity.It can be seen that, the embodiment of the present invention can battery discharge not in the same time, corresponding electricity method of estimation is used according to internal resistance ratio, so as to further improve the accuracy of electricity estimation.
It should be noted that, terminal can show that the moment calculates the second electricity ratio value of current time battery real surplus electricity and battery initial quantity of electricity by any described electricity methods of estimation of Fig. 1 to Fig. 3 in any time of battery discharge or by user-defined battery electric quantity state, and export the second electricity ratio value, the operational version of terminal so that user makes rational planning for.
The embodiment of the invention also discloses a kind of computer-readable storage medium, wherein, the computer-readable storage medium can have program stored therein, and the program includes the part or all of step of the electricity method of estimation described in above-mentioned Fig. 1 to Fig. 3 embodiment of the method when performing.
Fig. 4 is referred to, Fig. 4 is a kind of structural representation of terminal disclosed in the embodiment of the present invention, as shown in figure 4, the terminal can include with lower unit.
Acquiring unit 400, for obtaining the battery dump energy at current time and the first electricity ratio value of battery initial quantity of electricity；
In the embodiment of the present invention, battery initial quantity of electricity is referred to as the initial full capacity of battery or battery rated capacity；First electricity ratio value is used for the state-of-charge (Sate of Charge, SOC) for indicating battery current time；The battery dump energy at current time can be calculated according to Current integrating method with the first electricity ratio value of battery initial quantity of electricity and obtained, for example, the battery dump energy that last moment terminal is determined and battery initial quantity of electricity Q0Electricity ratio value be SOC1, last moment is T apart from the period at current time, according to the efficiency for charge-discharge of battery, passes through the integral and calculating electricity Q that battery discharges in period T1, then acquiring unit 400 obtain the first electricity ratio value SOC=SOC of battery dump energy and the battery initial quantity of electricity at current time1-Q1/Q0。
It can be seen that, Current integrating method employed in above-mentioned the first electricity of calculating ratio value does not account for change of the battery in discharge process in itself, and constantly accumulated error using Current integrating method in each period, cause electricity evaluated error big, therefore the first electricity ratio value need to be modified by 700 pairs of following query unit 500, computing unit 600 and amending unit.
Query unit 500, for from default electricity ratio value the first open-circuit voltage values corresponding with the first electricity ratio value that the acquisition of acquiring unit 400 is inquired about in open-circuit voltage relation table；
In the embodiment of the present invention, default electricity ratio value with open-circuit voltage relation table is obtained by testing and modeling, the corresponding relation being stored with default the electricity ratio value and open-circuit voltage relation table between the open-circuit voltage of battery and the electricity ratio value of battery.Optionally, the default electricity ratio value in open-circuit voltage relation table with that can also be stored with different temperatures, the corresponding relation between the open-circuit voltage of battery and the electricity ratio value of battery.
Computing unit 600, the first internal resistance value of current time battery is calculated for the first open-circuit voltage values that the output voltage measured according to current time, output current and query unit 500 are inquired about；
As an example it is assumed that the output voltage of the battery of current time measurement is Volt, output current Cur, the first electricity ratio value SOC obtained according to acquiring unit 4001And the first electricity ratio value SOC1Corresponding first open-circuit voltage values OCV1, the first internal resistance value R_Calc of the battery at current time can be calculated by formula (1).
In the embodiment of the present invention, query unit 500 is additionally operable to the second internal resistance value corresponding with the first electricity ratio value that the acquisition of acquiring unit 400 is inquired about in internal resistance of cell relation table from default electricity ratio value；
In the embodiment of the present invention, default electricity ratio value with internal resistance of cell relation table is obtained by testing and modeling, the corresponding relation being stored with default the electricity ratio value and internal resistance of cell relation table between each electricity ratio value and each internal resistance of cell value of battery.Optionally, the default electricity ratio value in internal resistance of cell value relation table with that can also be stored with different temperatures, the corresponding relation between the electricity ratio value and internal resistance of cell value of battery.
In the embodiment of the present invention, computing unit 600 is additionally operable to calculate the internal resistance ratio for the second internal resistance value that the first internal resistance value is inquired about with query unit 500；
Amending unit 700, the first electricity ratio value that the internal resistance ratio amendment acquiring unit 400 for being calculated according to computing unit 600 is obtained, obtains the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity.
In the embodiment of the present invention, amending unit 700 is according to the principle of internal resistance ratio amendment the first electricity ratio value：Assuming that the first electricity ratio value SOC currently calculated1It is accurate, the first internal resistance value reflection that then above-mentioned formula (1) is calculated be with by inquiring about the difference between the second internal resistance value that default electricity ratio value and internal resistance of cell relation table are obtained, the second internal resistance of acquisition of being tabled look-up by the first internal resistance value amendment of calculating Value, so as to which more accurately the battery at calculating current time can not power consumption, final the second electricity ratio value for obtaining battery real surplus electricity and battery initial quantity of electricity.
In the embodiment of the present invention, amending unit 700 can also be according to the principle of internal resistance ratio amendment the first electricity ratio value：Assuming that variant between the first electricity ratio value SOC and actual electricity ratio value that currently calculate and the second internal resistance value that obtained by inquiring about default electricity ratio value and internal resistance of cell relation table is accurate, the first internal resistance value reflection that then above-mentioned formula (1) is calculated is by inquiring about the difference between default electricity ratio value and the first open-circuit voltage values and the true open-circuit voltage values at current time of the acquisition of open-circuit voltage relation table, first the first open-circuit voltage values of internal resistance value amendment that can be then calculated by formula (1), eventually through revised first open-circuit voltage values amendment the first electricity ratio value, so as to obtain the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity.
In the embodiment of the present invention, terminal described by Fig. 4 can calculate the first internal resistance value of current time battery by acquiring unit 400, query unit 500 and computing unit 600, and corresponding second internal resistance value of the first electricity ratio value that acquiring unit 400 is obtained is inquired about by query unit 500, allow amending unit 700 according to first internal resistance value and internal resistance ratio amendment the first electricity ratio value of the second internal resistance value, obtain the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity.It can be seen that, the terminal described by Fig. 4 can not only avoid the simple error accumulation that the generation of current time electricity ratio value is calculated by Current integrating method；And can avoid the difference due to Experimental modeling and actual environment, only obtain the inaccurate of electricity ratio value with internal resistance of cell relation table by inquiring about default electricity ratio value with open-circuit voltage relation table or default electricity ratio value；Terminal described by the embodiment of the present invention obtains the second electricity ratio value of battery real surplus electricity and the pond initial quantity of electricity by internal resistance ratio amendment the first electricity ratio value, so as to improve the accuracy of electricity estimation.
Please also refer to Fig. 5, Fig. 5 is the structural representation of another terminal disclosed in the embodiment of the present invention, terminal shown in Fig. 5 is in addition to the acquiring unit 400 in including the terminal shown in Fig. 4, query unit 500, computing unit 600 and amending unit 700, and amending unit 700 can specifically include following subelement：
First computation subunit 710, the battery at the internal resistance ratio calculation current time for being calculated using computing unit 600 can not power consumption；
First obtains subelement 720, and the battery for subtracting the calculating of the first computation subunit 710 from battery dump energy can not power consumption, acquisition remaining battery available power；
In the embodiment of the present invention, the battery dump energy can be obtained by electric quantity integration method, and first obtains son list Member 720 therefrom subtracts battery can not power consumption, you can obtain the remaining battery available power at current time.
Second obtains subelement 730, and the battery for subtracting the calculating of the first computation subunit 710 from battery initial quantity of electricity can not power consumption, the acquisition initial available power of battery；
In the embodiment of the present invention, the battery initial quantity of electricity is referred to as the initial full capacity of battery or battery rated capacity, and the second acquisition subelement 730 therefrom subtracts battery can not power consumption, you can obtain the initial available power of battery.
Second computation subunit 740, remaining battery available power and the second ratio for obtaining the initial available power of battery that subelement 720 is obtained that subelement 720 is obtained are obtained for calculating first, the ratio is regard as battery real surplus electricity and the second electricity ratio value of battery initial quantity of electricity.
In the embodiment of the present invention, with the influence of discharge regime where battery and discharge time, the electricity ratio value of battery and the relation of the internal resistance of cell can and the relation of default electricity ratio value and the internal resistance of cell there is deviation, and then, cause each moment battery can not power consumption also change, the battery can not power consumption refer to presence due to the internal resistance of cell, internal resistance has partial pressure so that a part of electricity that can not be exported in battery discharge procedure.Therefore, amending unit 700 can adjust the unavailable electricity proportion of battery at current time, reach the amendment to the first electricity ratio value at current time, obtain the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity.
In the embodiment of the present invention, in the terminal shown in Fig. 5, the first computation subunit 710 can include with lower module：
First determining module, for the minimum operational voltage value for determining normally to run；
Enquiry module, for from default electricity ratio value the 3rd electricity ratio value corresponding with inquiring about the second open-circuit voltage values in open-circuit voltage relation table；
Enquiry module, is additionally operable to the 3rd internal resistance value corresponding with the 3rd electricity ratio value of inquiry in internal resistance of cell relation table from default electricity ratio value；
First computing module, for calculating the minimum operational voltage value and value that the product between the 3rd internal resistance value, internal resistance ratio and output current three and the first determining module are determined；
Wherein, the second open-circuit voltage values be from default electricity ratio value and found in open-circuit voltage relation table with the first computing module calculate and value differ minimum open-circuit voltage values；
Second determining module, determines that the battery at current time can not power consumption for calculated according to the first computing module and value.
In the embodiment of the present invention, the second determining module determine current time battery can not power consumption when can be with Triggering first obtains subelement 720 and obtains remaining battery available power, triggering second obtains subelement and obtains the initial available power of battery, so that the second computation subunit 740 regard the ratio of the remaining battery available power and the initial available power of the battery as battery real surplus electricity and the second electricity ratio value of battery initial quantity of electricity.
In the embodiment of the present invention, the battery can not power consumption can be obtained according to the partial pressure that internal resistance is produced when maintaining terminal (or each device in terminal) the minimum operational voltage value that normally run and electric discharge end.Wherein, the partial pressure that the electric discharge end internal resistance that current time calculates is produced can be obtained by enquiry module and the first computing module, i.e., the product between the 3rd internal resistance value, internal resistance ratio and output current three is the partial pressure that the electric discharge end internal resistance calculated at current time is produced.It can be seen that, as described above, in the embodiment of the present invention, the internal resistance value that the first computing module can not be in power consumption by the internal resistance ratio amendment battery at current time so that the battery that calculates of current time can not power consumption be more nearly actual battery can not power consumption.
For example, if the minimum operational voltage value that each device is normally run in terminal or terminal is 3.2V, in the case where output current is Cur, a minimum open-circuit voltage OCV is searched from default electricity ratio value and open-circuit voltage relation table1, open-circuit voltage OCV1 can be outside the voltage drop that internal resistance is produced, and maintenance output voltage is 3.2V, and inquires about open-circuit voltage values OCV from default electricity ratio value and open-circuit voltage relation table1The 3rd electricity ratio value SOC of correspondence3, the 3rd electricity ratio value SOC is inquired about from default electricity ratio value and internal resistance of cell relation table3Corresponding 3rd internal resistance value R_Calc3, then open-circuit voltage values OCV1The voltage produced in internal resistance is reduced to R_Calc3× Cur, in addition, the deviation that the internal resistance ratio R atio calculated by computing unit 600 reflects the first internal resistance value of calculating between the second internal resistance value for tabling look-up, and the internal resistance that the internal resistance ratio is calculated with electric discharge end under the same conditions differs seldom with the ratio for the internal resistance tabled look-up, table look-up acquisition internal resistance ratio, therefore open-circuit voltage values OCV for the internal resistance ratio amendment electric discharge end that can be calculated by current time1The voltage produced in internal resistance is reduced to Ratio × R_Calc3× Cur, thus battery can not power consumption can be the voltage drop Ratio × R_Calc produced in 3.2V and internal resistance according to minimum operational voltage value3× Cur sums are determined.
Terminal described by Fig. 5 is obtained after internal resistance ratio by acquiring unit 400, query unit 500 and computing unit 600, the battery for calculating current time by the first computation subunit 710 in amending unit 700 can not power consumption, and by first acquisition subelement 720 subtracted from battery dump energy the battery can not power consumption, obtain remaining battery available power；Second acquisition subelement 730 subtracts the battery from battery initial quantity of electricity can not power consumption, the acquisition initial available power of battery；It is final by the second computation subunit 740 calculate the ratio of remaining battery available power and the initial available power of battery as current time battery real surplus electricity with Second electricity ratio value of battery initial quantity of electricity, it can be seen that, the second electricity ratio value more really reflects the state-of-charge of current time battery, improves the accuracy of electricity estimation, the operational version of terminal so that user can make rational planning for according to the second electricity ratio value.
Fig. 6 is referred to again, Fig. 6 is the structural representation of another terminal disclosed in the embodiment of the present invention, terminal shown in Fig. 6 is compared with the terminal shown in Fig. 5, terminal shown in Fig. 6 can be when internal resistance ratio be less than zero, amendment open-circuit voltage values are used to correct the electricity method of estimation of the first electricity ratio value, specifically, the terminal shown in Fig. 6 is in addition to the unit in including terminal shown in Fig. 5, subelement, amending unit 700 can also include following subelement.
Voltage revise subelemen 750, for the second internal resistance value of the first internal resistance value and query unit 500 inquiry calculated according to computing unit 600, corrects the first open-circuit voltage values；
Subelement 760 is inquired about, for from default electricity ratio value the 4th electricity ratio value corresponding with inquiring about revised first open-circuit voltage values of voltage revise subelemen 750 in internal resistance of cell relation table；
3rd obtains subelement 770, difference and the product of battery initial quantity of electricity for calculating the first electricity ratio value that the 4th electricity ratio value that inquiry subelement 760 is inquired about is obtained with acquiring unit 400, obtains the amendment electricity factor；
4th obtains subelement 780, for obtaining the amendment electricity factor the first electricity ratio value of adjustment that subelement 770 is obtained using the 3rd, obtains the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity.
In the embodiment of the present invention, judgment sub-unit 790 can also be included in amending unit 700 shown in Fig. 6, the judgment sub-unit 790 is used for when the internal resistance ratio for judging that computing unit 600 is calculated is more than or equal to zero, the battery for triggering the internal resistance ratio calculation current time that the first computation subunit 710 is calculated using computing unit 600 can not power consumption, and obtain subelement 720 by first, second obtains the computation subunit 740 of subelement 730 and second, it regard the ratio of remaining battery available power and the initial available power of battery as battery real surplus electricity and the second electricity ratio value of battery initial quantity of electricity；When judgment sub-unit 790 is less than zero in the internal resistance ratio for judging that computing unit 600 is calculated, trigger voltage revise subelemen 750 corrects the first open-circuit voltage values, and the acquisition acquisition amendment electricity factor the first electricity ratio value of adjustment of subelement 780 of subelement 770 and the 4th is obtained by inquiring about subelement the 760, the 3rd, obtain the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity.
In the terminal described by Fig. 6, voltage revise subelemen 750 can also include with lower module：
Second computing module 751, the second internal resistance value and computing unit for calculating the inquiry of query unit 500 The difference and the product of output current of 600 the first internal resistance values calculated, obtain open-circuit voltage modifying factor；
Acquisition module 752, for the open-circuit voltage values of query unit 500 first to be subtracted into the open-circuit voltage modifying factor that the second computing module 751 is obtained, obtains revised first open-circuit voltage values.
In the embodiment of the present invention, because internal resistance ratio is less than zero, illustrate that open-circuit voltage is less than output voltage, that is the first electricity ratio value is less than actual electricity ratio value, therefore it can be specially that the first electricity ratio value adds the amendment electricity factor that terminal adjusts the first electricity ratio value using the amendment electricity factor, so as to obtain the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity, it should be noted that, now, it is not necessary to consider that the battery in the first electricity ratio value can not power consumption.
In terminal described by Fig. 6, judgment sub-unit 790 can be when the first internal resistance value and the ratio of the second internal resistance value of acquisition of tabling look-up for judging current time calculating be more than or equal to zero, the battery for triggering the first computation subunit 710, first acquisition acquisition subelement 730 and second calculating current time of computation subunit 740 of subelement 720, second can not power consumption amendment the first electricity ratio value, the second electricity ratio value of acquisition battery real surplus electricity and battery initial quantity of electricity；If not, first open-circuit voltage values at the acquisition amendment current time of subelement 780 of subelement 770 and the 4th can be then obtained with trigger voltage revise subelemen 750, inquiry subelement the 760, the 3rd to correct the first electricity ratio value at current time, so as to obtain the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity.It can be seen that, terminal described by the embodiment of the present invention can battery discharge not in the same time, corresponding electricity method of estimation is used according to internal resistance ratio, so as to further improve the accuracy of electricity estimation.
It should be noted that, the any described terminals of Fig. 4 to Fig. 6 can show that the moment calculates the second electricity ratio value of current time battery real surplus electricity and battery initial quantity of electricity in any time of battery discharge or by user-defined battery electric quantity state, and export the second electricity ratio value, the operational version of terminal so that user makes rational planning for.
Fig. 7 is referred to, Fig. 7 is the structural representation of another terminal disclosed in the embodiment of the present invention, as shown in fig. 7, the terminal can include：At least one processor 810, such as CPU, at least one communication bus 820, memory 830 and at least one battery 840.Wherein, communication bus 820 is used to realize the connection communication between these components.Memory 830 can be high-speed RAM memory or non-labile memory (non-volatile memory), for example, at least one magnetic disk storage.Memory 830 optionally can also be at least one storage device for being located remotely from aforementioned processor 810.As shown in fig. 7, being used as a kind of meter Electricity can be included in the memory 830 of calculation machine storage medium and estimate program.
In the terminal shown in Fig. 7, processor 810 can be used for calling the electricity stored in memory 830 to estimate program, and perform following operate：
Obtain the first electricity ratio value of the battery dump energy at current time and the battery initial quantity of electricity of battery 840；
From default electricity ratio value the first open-circuit voltage values corresponding with inquiring about the first electricity ratio value in open-circuit voltage relation table；
The output voltage, output current and the first open-circuit voltage values that are measured according to current time calculate the first internal resistance value of current time battery；
From default electricity ratio value the second internal resistance value corresponding with inquiring about the first electricity ratio value in internal resistance of cell relation table, and calculate the internal resistance ratio of the first internal resistance value and the second internal resistance value；
According to internal resistance ratio amendment the first electricity ratio value, the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity is obtained.
In the embodiment of the present invention, battery initial quantity of electricity is referred to as the initial full capacity of battery or battery rated capacity；First electricity ratio value is used for the state-of-charge (Sate of Charge, SOC) for indicating battery current time；The battery dump energy at current time can be calculated according to Current integrating method with the first electricity ratio value of battery initial quantity of electricity and obtained, for example, the battery dump energy that last moment terminal is determined and battery initial quantity of electricity Q0 electricity ratio value are SOC1, last moment is T apart from the period at current time, according to the efficiency for charge-discharge of battery, passes through the integral and calculating electricity Q that battery discharges in period T1, then the first electricity ratio value SOC=SOC of the battery dump energy at current time and battery initial quantity of electricity1-Q1/Q0。
In the embodiment of the present invention, default electricity ratio value with open-circuit voltage relation table is obtained by testing and modeling, the corresponding relation being stored with default the electricity ratio value and open-circuit voltage relation table between the open-circuit voltage of battery and the electricity ratio value of battery.Optionally, the default electricity ratio value in open-circuit voltage relation table with that can also be stored with different temperatures, the corresponding relation between the open-circuit voltage of battery and the electricity ratio value of battery.
In the embodiment of the present invention, the first internal resistance value that output voltage, output current and the first open-circuit voltage values that processor 810 is measured according to current time calculate current time battery can be specially：The difference of the output voltage for the battery that the first open-circuit voltage values are measured with current time, and the output current for the battery that the difference divided by current time are measured are calculated, the first internal resistance value of current time battery is obtained.
As an example it is assumed that the output voltage of the battery of current time measurement is Volt, output current Cur, the first electricity ratio value SOC that step S101 is obtained1And the first electricity ratio value SOC1Corresponding first open-circuit voltage values OCV1, the first internal resistance value R_Calc of the battery at current time can be calculated by above-mentioned formula (1).
In the embodiment of the present invention, processor 810 can be used for calling the electricity stored in memory 830 to estimate program, according to internal resistance ratio amendment the first electricity ratio value, the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity is obtained, following operation can be specifically included：
Can not power consumption using the battery at internal resistance ratio calculation current time；
Battery is subtracted from battery dump energy can not power consumption, acquisition remaining battery available power；
Battery is subtracted from battery initial quantity of electricity can not power consumption, the acquisition initial available power of battery；
The ratio of remaining battery available power and the initial available power of battery is calculated, ratio is regard as battery real surplus electricity and the second electricity ratio value of battery initial quantity of electricity.
In the embodiment of the present invention, with the influence of discharge regime where battery and discharge time, the electricity ratio value of battery and the relation of the internal resistance of cell can and the relation of default electricity ratio value and the internal resistance of cell there is deviation, and then, cause each moment battery can not power consumption also change, the battery can not power consumption refer to presence due to the internal resistance of cell, internal resistance has partial pressure so that a part of electricity that can not be exported in battery discharge procedure.Therefore, terminal can adjust the unavailable electricity proportion of battery at current time, reach the amendment to the first electricity ratio value at current time, obtain the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity.
In the embodiment of the present invention, processor 810 can be used for calling the electricity stored in memory 830 to estimate program, using internal resistance ratio calculation current time battery can not power consumption, can specifically perform following operation：
It is determined that the minimum operational voltage value normally run；
From default electricity ratio value the 3rd electricity ratio value corresponding with inquiring about the second open-circuit voltage values in open-circuit voltage relation table；
From default electricity ratio value the 3rd internal resistance value corresponding with inquiring about the 3rd electricity ratio value in internal resistance of cell relation table；
Calculate product between the 3rd internal resistance value, internal resistance ratio and output current three and minimum operational voltage value and value；
Wherein, the second open-circuit voltage values are with being found in open-circuit voltage relation table from default electricity ratio value Differ minimum open-circuit voltage values with value；
Can not power consumption according to the battery with value determination current time.
In the embodiment of the present invention, the battery can not power consumption can be obtained according to the partial pressure that internal resistance is produced when maintaining terminal (or each device in terminal) the minimum operational voltage value that normally run and electric discharge end.Wherein, the partial pressure that the electric discharge end internal resistance that current time calculates is produced is the product between the 3rd internal resistance value, internal resistance ratio and output current three.It can be seen that, internal resistance value that can not be in power consumption by the internal resistance ratio amendment battery at current time, may be such that battery that current time calculates can not power consumption be more nearly actual battery can not power consumption.
For example, if the minimum operational voltage value that each device is normally run in terminal or terminal is 3.2V, in the case where output current is Cur, a minimum open-circuit voltage OCV is searched from default electricity ratio value and open-circuit voltage relation table1, open-circuit voltage OCV1Can be outside the voltage drop that internal resistance is produced, maintenance output voltage is 3.2V, and inquires about open-circuit voltage values OCV from default electricity ratio value and open-circuit voltage relation table1The 3rd electricity ratio value SOC of correspondence3, from default electricity ratio value threeth internal resistance value R_Calc corresponding with inquiring about the 3rd electricity ratio value SOC3 in internal resistance of cell relation table3, then open-circuit voltage values OCV1The voltage produced in internal resistance is reduced to R_Calc3× Cur, in addition, the deviation that the internal resistance ratio R atio that processor device 810 is calculated reflects the first internal resistance value of calculating between the second internal resistance value for tabling look-up, and the internal resistance that the internal resistance ratio is calculated with electric discharge end under the same conditions differs seldom with the ratio for the internal resistance tabled look-up, table look-up acquisition internal resistance ratio, therefore open-circuit voltage values OCV for the internal resistance ratio amendment electric discharge end that can be calculated by current time1The voltage produced in internal resistance is reduced to Ratio × R_Calc3× Cur, thus battery can not power consumption can be the voltage drop Ratio × R_Calc produced in 3.2V and internal resistance according to minimum operational voltage value3× Cur sums are determined.
In the embodiment of the present invention, processor 810 can be used for calling the electricity stored in memory 830 to estimate program, when internal resistance ratio is less than zero, the first electricity ratio value according to the internal resistance ratio amendment, the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity is obtained, following steps can be specifically included：
According to the first internal resistance value and the second internal resistance value, the first open-circuit voltage values are corrected；
From default electricity ratio value the 4th electricity ratio value corresponding with inquiring about revised first open-circuit voltage values in internal resistance of cell relation table；
The difference and the product of battery initial quantity of electricity of the 4th electricity ratio value and the first electricity ratio value are calculated, the amendment electricity factor is obtained；
The first electricity ratio value is adjusted using the electricity factor is corrected, the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity is obtained.
In the embodiment of the present invention, processor 810 can be used for calling the electricity stored in memory 830 to estimate program, according to the first internal resistance value and the second internal resistance value, corrects the first open-circuit voltage values, can specifically perform following steps：
The product of the difference and the output current of the second internal resistance value and the first internal resistance value is calculated, open-circuit voltage modifying factor is obtained；
First open-circuit voltage values are subtracted into open-circuit voltage modifying factor, revised first open-circuit voltage values are obtained.
In the embodiment of the present invention, because internal resistance ratio is less than zero, illustrate that open-circuit voltage is less than output voltage, that is the first electricity ratio value is less than actual electricity ratio value, therefore it can be specially that the first electricity ratio value adds the amendment electricity factor that terminal adjusts the first electricity ratio value using the amendment electricity factor, so as to obtain the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity, it should be noted that, now, it is not necessary to consider that the battery in the first electricity ratio value can not power consumption.
In terminal described by Fig. 7, processor can call the electricity in memory to estimate program, calculate current time battery can not power consumption, by this can not power consumption amendment the first electricity ratio value, to obtain the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity；Processor can also be when the internal resistance ratio between the first internal resistance value and the second internal resistance value of acquisition of tabling look-up that current time calculates be less than zero, using the first electricity ratio value at the open-circuit voltage amendment current time at amendment current time, so as to obtain the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity.It can be seen that, the embodiment of the present invention can battery discharge not in the same time, corresponding electricity method of estimation is used according to internal resistance ratio, so as to further improve the accuracy of electricity estimation.
It should be noted that " first ", " second ", " the 3rd ", " the 4th " etc. are only used for mutual differentiation, rather than represent their significance level and order etc..Herein, " the first electricity ratio value ", " the second electricity ratio value " etc. are used to distinguish the different electricity ratio value of numerical value, and them are not represented has different types；" the first open-circuit voltage values ", " second open-circuit voltage values " etc. are used to distinguish the different open-circuit voltage values of numerical value, and them are not represented has different types；" the first internal resistance value ", " second internal resistance value " etc. are used to distinguish the different internal resistance value of numerical value, and them are not represented has different types.
It should be noted that for each foregoing embodiment of the method, in order to be briefly described, therefore by its all table State as a series of combination of actions, but those skilled in the art should know, the application is not limited by described sequence of movement, because according to the application, certain some step can be carried out using other orders or simultaneously.Secondly, those skilled in the art should also know, embodiment described in this description belongs to preferred embodiment, necessary to involved action and module not necessarily the application.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and the part being not described in some embodiment may refer to the associated description of other embodiment.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment can be by program to instruct the hardware of correlation to complete, the program can be stored in a computer-readable recording medium, and storage medium can include：Flash disk, read-only storage (Read-Only Memory, ROM), random access device (Random Access Memory, RAM), disk or CD etc..
The electricity method of estimation and terminal provided above the embodiment of the present invention is described in detail, specific case used herein is set forth to the principle and embodiment of the present invention, and the explanation of above example is only intended to help to understand method and its core concept of the invention；Simultaneously for those of ordinary skill in the art, according to the thought of the present invention, it will change in specific embodiments and applications, in summary, this specification content should not be construed as limiting the invention.

Claims (16)

  1. A kind of electricity method of estimation, it is characterised in that including：
    Obtain the battery dump energy at current time and the first electricity ratio value of battery initial quantity of electricity；
    From default electricity ratio value the first open-circuit voltage values corresponding with inquiring about the first electricity ratio value in open-circuit voltage relation table；
    The output voltage, output current and first open-circuit voltage values that are measured according to current time calculate the first internal resistance value of current time battery；
    From default electricity ratio value the second internal resistance value corresponding with inquiring about the first electricity ratio value in internal resistance of cell relation table, and calculate the internal resistance ratio of first internal resistance value and second internal resistance value；
    The first electricity ratio value according to the internal resistance ratio amendment, obtains the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity.
  2. The method as described in claim 1, it is characterised in that the first electricity ratio value according to the internal resistance ratio amendment, obtains the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity, including：
    Can not power consumption using the battery at current time described in the internal resistance ratio calculation；
    The battery is subtracted from the battery dump energy can not power consumption, acquisition remaining battery available power；
    The battery is subtracted from the battery initial quantity of electricity can not power consumption, the acquisition initial available power of battery；
    The ratio of the remaining battery available power and the initial available power of the battery is calculated, the ratio is regard as battery real surplus electricity and the second electricity ratio value of the battery initial quantity of electricity.
  3. Method as claimed in claim 2, it is characterised in that the battery using current time described in the internal resistance ratio calculation can not power consumption, including：
    It is determined that the minimum operational voltage value normally run；
    From the default electricity ratio value the 3rd electricity ratio value corresponding with inquiring about the second open-circuit voltage values in open-circuit voltage relation table；
    From the default electricity ratio value the 3rd internal resistance value corresponding with inquiring about the 3rd electricity ratio value in internal resistance of cell relation table；
    Calculate product between the 3rd internal resistance value, the internal resistance ratio and the output current three and the minimum operational voltage value and value；
    Wherein, second open-circuit voltage values are the open-circuit voltage values that minimum is differed with described and value with being found in open-circuit voltage relation table from the default electricity ratio value；
    Determine that the battery at the current time can not power consumption according to described and value.
  4. Method as described in any one of claims 1 to 3, characterized in that, when the internal resistance ratio is less than zero, the first electricity ratio value according to the internal resistance ratio amendment, the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity is obtained, including：
    According to first internal resistance value and second internal resistance value, first open-circuit voltage values are corrected；
    From the default electricity ratio value the 4th electricity ratio value corresponding with inquiring about revised first open-circuit voltage values in internal resistance of cell relation table；
    The 4th electricity ratio value and the difference of the first electricity ratio value and the product of the battery initial quantity of electricity are calculated, the amendment electricity factor is obtained；
    The first electricity ratio value is adjusted using the amendment electricity factor, the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity is obtained.
  5. Method as claimed in claim 4, it is characterised in that described according to first internal resistance value and second internal resistance value, corrects first open-circuit voltage values, including：
    Second internal resistance value and the difference of first internal resistance value and the product of the output current are calculated, open-circuit voltage modifying factor is obtained；
    First open-circuit voltage values are subtracted into the open-circuit voltage modifying factor, revised first open-circuit voltage values are obtained.
  6. A kind of terminal, it is characterised in that including：
    Acquiring unit, for obtaining the battery dump energy at current time and the first electricity ratio value of battery initial quantity of electricity；
    Query unit, for from default electricity ratio value the first open-circuit voltage values corresponding with the first electricity ratio value that the acquiring unit acquisition is inquired about in open-circuit voltage relation table；
    Computing unit, the first internal resistance value of current time battery is calculated for the first open-circuit voltage values that the output voltage measured according to current time, output current and the query unit are inquired about；
    The query unit, is additionally operable to the second internal resistance value corresponding with the first electricity ratio value that the acquiring unit acquisition is inquired about in internal resistance of cell relation table from default electricity ratio value；
    The computing unit, is additionally operable to calculate the internal resistance ratio of first internal resistance value and second internal resistance value；
    Amending unit, for the first electricity ratio value according to the internal resistance ratio amendment that the computing unit is calculated, obtains the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity.
  7. Terminal as claimed in claim 6, it is characterised in that the amending unit includes：
    First computation subunit, can not power consumption for the battery using current time described in the internal resistance ratio calculation；
    First obtains subelement, can not power consumption, acquisition remaining battery available power for subtracting the battery that first computation subunit is calculated from the battery dump energy；
    Second obtains subelement, can not power consumption, the acquisition initial available power of battery for subtracting the battery that first computation subunit is calculated from the battery initial quantity of electricity；
    Second computation subunit, remaining battery available power and the described second ratio for obtaining the initial available power of battery that subelement is obtained that subelement is obtained are obtained for calculating described first, the ratio is regard as battery real surplus electricity and the second electricity ratio value of the battery initial quantity of electricity.
  8. Terminal as claimed in claim 7, it is characterised in that first computation subunit includes：
    First determining module, for the minimum operational voltage value for determining normally to run；
    Enquiry module, for from the default electricity ratio value the 3rd electricity ratio value corresponding with inquiring about the second open-circuit voltage values in open-circuit voltage relation table；
    The enquiry module, is additionally operable to the 3rd internal resistance value corresponding with inquiring about the 3rd electricity ratio value in internal resistance of cell relation table from the default electricity ratio value；
    First computing module, for calculate the product between the 3rd internal resistance value, the internal resistance ratio and the output current three and the minimum operational voltage value and value；
    Wherein, second open-circuit voltage values are the open-circuit voltage values that minimum is differed with described and value with being found in open-circuit voltage relation table from the default electricity ratio value；
    Second determining module, determines that the battery at the current time can not power consumption for calculated according to first computing module and value.
  9. Terminal as described in any one of claim 6 to 8, it is characterised in that when the internal resistance ratio is less than zero, the amending unit includes：
    Voltage revise subelemen, for according to first internal resistance value and second internal resistance value, correcting first open-circuit voltage values；
    Subelement is inquired about, for from the default electricity ratio value the 4th electricity ratio value corresponding with inquiring about revised first open-circuit voltage values in internal resistance of cell relation table；
    3rd obtains subelement, the 4th electricity ratio value and the difference of the first electricity ratio value and the product of the battery initial quantity of electricity for calculating the inquiry subelement inquiry, obtains the amendment electricity factor；
    4th obtains subelement, for obtaining amendment electricity factor adjustment the first electricity ratio value that subelement is obtained using the described 3rd, obtains the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity.
  10. Terminal as claimed in claim 4, it is characterised in that the voltage revise subelemen includes：
    Second computing module, for calculating second internal resistance value and the difference of first internal resistance value and the product of the output current, obtains open-circuit voltage modifying factor；
    Acquisition module, for first open-circuit voltage values to be subtracted into the open-circuit voltage modifying factor that second computing module is obtained, obtains revised first open-circuit voltage values.
  11. A kind of computer-readable storage medium, it is characterised in that
    The computer-readable storage medium has program stored therein, including the step as described in any one of claim 1 to 5 when described program is performed.
  12. A kind of terminal, it is characterised in that including：Processor, memory, communication bus and battery；
    Wherein, the memory is used for storage program,
    The communication bus is used for the communication set up between the processor and the memory；
    The processor is used for the program for calling the memory storage, performs following steps：
    Obtain the battery dump energy at current time and the first electricity ratio value of battery initial quantity of electricity；
    From default electricity ratio value the first open-circuit voltage values corresponding with inquiring about the first electricity ratio value in open-circuit voltage relation table；
    The output voltage, output current and first open-circuit voltage values that are measured according to current time calculate the first internal resistance value of current time battery；
    From default electricity ratio value the second internal resistance value corresponding with inquiring about the first electricity ratio value in internal resistance of cell relation table, and calculate the internal resistance ratio of first internal resistance value and second internal resistance value；
    The first electricity ratio value according to the internal resistance ratio amendment, obtains the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity.
  13. Terminal as claimed in claim 12, it is characterised in that the processor first electricity ratio value according to the internal resistance ratio amendment, when obtaining the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity, performs following steps：
    Can not power consumption using the battery at current time described in the internal resistance ratio calculation；
    The battery is subtracted from the battery dump energy can not power consumption, acquisition remaining battery available power；
    The battery is subtracted from the battery initial quantity of electricity can not power consumption, the acquisition initial available power of battery；
    The ratio of the remaining battery available power and the initial available power of the battery is calculated, the ratio is regard as battery real surplus electricity and the second electricity ratio value of the battery initial quantity of electricity.
  14. Terminal as claimed in claim 13, it is characterised in that the processor using current time described in the internal resistance ratio calculation battery can not power consumption when, perform following steps：
    It is determined that the minimum operational voltage value normally run；
    From the default electricity ratio value the 3rd electricity ratio value corresponding with inquiring about the second open-circuit voltage values in open-circuit voltage relation table；
    From the default electricity ratio value the 3rd internal resistance value corresponding with inquiring about the 3rd electricity ratio value in internal resistance of cell relation table；
    Calculate product between the 3rd internal resistance value, the internal resistance ratio and the output current three and the minimum operational voltage value and value；
    Wherein, second open-circuit voltage values are the open-circuit voltage values that minimum is differed with described and value with being found in open-circuit voltage relation table from the default electricity ratio value；
    Determine that the battery at the current time can not power consumption according to described and value.
  15. Terminal as described in any one of claim 12 to 14, it is characterized in that, when the internal resistance ratio is less than zero, the then processor first electricity ratio value according to the internal resistance ratio amendment, when obtaining the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity, following steps are performed：
    According to first internal resistance value and second internal resistance value, first open-circuit voltage values are corrected；
    From the default electricity ratio value the 4th electricity ratio value corresponding with inquiring about revised first open-circuit voltage values in internal resistance of cell relation table；
    The 4th electricity ratio value and the difference of the first electricity ratio value and the product of the battery initial quantity of electricity are calculated, the amendment electricity factor is obtained；
    The first electricity ratio value is adjusted using the amendment electricity factor, the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity is obtained.
  16. Terminal as claimed in claim 15, it is characterised in that the processor is according to first internal resistance value and second internal resistance value, when correcting first open-circuit voltage values, performs following steps：
    Second internal resistance value and the difference of first internal resistance value and the product of the output current are calculated, open-circuit voltage modifying factor is obtained；
    First open-circuit voltage values are subtracted into the open-circuit voltage modifying factor, revised first open-circuit voltage values are obtained.
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