CN106574948B

CN106574948B - A kind of electricity estimation method and terminal

Info

Publication number: CN106574948B
Application number: CN201580042849.8A
Authority: CN
Inventors: 李金奎
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-03-18
Filing date: 2015-03-18
Publication date: 2019-05-10
Anticipated expiration: 2035-03-18
Also published as: CN106574948A; WO2016145621A1

Abstract

A kind of electricity estimation method and terminal, wherein the electricity estimation method obtains the battery dump energy at current time and the first electricity ratio value of battery initial quantity of electricity；And corresponding first open-circuit voltage values of the first electricity ratio value are inquired from preset electricity ratio value and open-circuit voltage relation table；The first internal resistance value of current time battery is calculated according to the output voltage of current time measurement, output electric current and the first open-circuit voltage values；And corresponding second internal resistance value of the first electricity ratio value is inquired from preset electricity ratio value and internal resistance of cell relation table, and calculate the internal resistance ratio of the first internal resistance value and second internal resistance value；The first electricity ratio value is corrected according to internal resistance ratio, obtains the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity.As it can be seen that correcting the first electricity ratio value by internal resistance ratio, the accuracy of electricity estimation is improved.

Description

A kind of electricity estimation method and terminal

Technical field

The present invention relates to electronic technology field more particularly to a kind of electricity estimation methods and terminal.

Background technique

With the development of electronic technology, the terminals such as mobile phone, tablet computer, notebook play in people's lives and work Important role, however, the standby time of these terminals is limited, in order to enable user makes rational planning for end in limited standby time The operational version at end can show the remaining capacity of battery in terminal in time.In practice, it has been found that terminal is in display, there are also remaining After electricity soon, often will power consumption finish automatic shutdown, bring very big inconvenience to user.The reason is that existing electricity Amount estimation method mostly uses Current integrating method, i.e., constantly accumulates obtaining discharge electricity amount to obtain remaining capacity according to true electric current, And with the growth of discharge time, the deviation accumulation value of current measurement can be increasing, big so as to cause electricity estimation error.

Summary of the invention

The embodiment of the invention discloses a kind of electricity estimation method and terminals, can be improved the accuracy of electricity estimation.

First aspect of the embodiment of the present invention discloses a kind of electricity estimation method, comprising:

Obtain the battery dump energy at current time and the first electricity ratio value of battery initial quantity of electricity；

The first electricity ratio value corresponding first is inquired from preset electricity ratio value and open-circuit voltage relation table Open-circuit voltage values；

Current time electricity is calculated according to the output voltage of current time measurement, output electric current and first open-circuit voltage values First internal resistance value in pond；

The first electricity ratio value corresponding second is inquired from preset electricity ratio value and internal resistance of cell relation table Internal resistance value, and calculate the internal resistance ratio of first internal resistance value Yu second internal resistance value；

The first electricity ratio value is corrected according to the internal resistance ratio, obtains battery real surplus electricity and the battery Second electricity ratio value of initial quantity of electricity.

It is described to be repaired according to the internal resistance ratio in the first possible implementation of first aspect of the embodiment of the present invention The just described first electricity ratio value obtains the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity, Include:

It can not electricity consumption using the battery at current time described in the internal resistance ratio calculation；

Subtracted from the battery dump energy battery can not electricity consumption, obtain remaining battery available power；

Subtracted from the battery initial quantity of electricity battery can not electricity consumption, obtain the initial available power of battery；

The ratio for calculating the remaining battery available power Yu the initial available power of the battery, using the ratio as electricity Second electricity ratio value of pond real surplus electricity and the battery initial quantity of electricity.

In conjunction with the first possible implementation of first aspect of the embodiment of the present invention, in first aspect of the embodiment of the present invention Second of possible implementation in, the battery using current time described in the internal resistance ratio calculation can not electricity consumption Amount, comprising:

Determine the minimum operating voltage value operated normally；

The corresponding third of the second open-circuit voltage values is inquired from the preset electricity ratio value and open-circuit voltage relation table Electricity ratio value；

It is corresponding that the third electricity ratio value is inquired from the preset electricity ratio value and internal resistance of cell relation table Third internal resistance value；

Calculate the third internal resistance value, the internal resistance ratio and it is described output electric current three between product and it is described most Low-work voltage value and value；

Wherein, second open-circuit voltage values are to search from the preset electricity ratio value and open-circuit voltage relation table That arrives differs the smallest open-circuit voltage values with described and value；

Determine that the battery at the current time can not electricity consumption according to described and value.

In conjunction with first aspect of the embodiment of the present invention the first to second of possible implementation, in the embodiment of the present invention It is described according to the internal resistance ratio when the internal resistance ratio is less than zero in the third possible implementation of first aspect The first electricity ratio value is corrected, the second electricity ratio of battery real surplus electricity and the battery initial quantity of electricity is obtained Value, comprising:

According to first internal resistance value and second internal resistance value, first open-circuit voltage values are corrected；

Revised first open-circuit voltage is inquired from the preset electricity ratio value and internal resistance of cell relation table It is worth corresponding 4th electricity ratio value；

Calculate the 4th electricity ratio value and the first electricity ratio value difference and the battery initial quantity of electricity Product obtains the amendment electricity factor；

Adjust the first electricity ratio value using the amendment electricity factor, obtain battery real surplus electricity with it is described Second electricity ratio value of battery initial quantity of electricity.

In conjunction with first aspect of the embodiment of the present invention the first to the third possible implementation, in the embodiment of the present invention It is described according to first internal resistance value and second internal resistance value, amendment in 4th kind of possible implementation of first aspect First open-circuit voltage values, comprising:

The difference of second internal resistance value and first internal resistance value and the product of the output electric current are calculated, is opened a way Voltage modifying factor；

First open-circuit voltage values are subtracted into the open-circuit voltage modifying factor, obtain revised first open-circuit voltage Value.

Second aspect of the embodiment of the present invention discloses a kind of terminal, comprising:

Acquiring unit, for obtaining the battery dump energy at current time and the first electricity ratio of battery initial quantity of electricity Value；

Query unit is obtained for inquiring the acquiring unit from preset electricity ratio value and open-circuit voltage relation table Corresponding first open-circuit voltage values of the first electricity ratio value；

Computing unit, what output voltage, output electric current and the query unit for being measured according to current time were inquired First internal resistance value of the first open-circuit voltage values calculating current time battery；

The query unit is also used to inquire the acquisition from preset electricity ratio value and internal resistance of cell relation table single Corresponding second internal resistance value of the first electricity ratio value that member obtains；

The computing unit is also used to calculate the internal resistance ratio of first internal resistance value Yu second internal resistance value；

Amending unit, the internal resistance ratio for being calculated according to the computing unit are corrected the first electricity ratio value, are obtained Obtain 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 electricity consumption for the battery using current time described in the internal resistance ratio calculation；

First obtains subelement, the electricity calculated for subtracting first computation subunit from the battery dump energy Pond can not electricity consumption, obtain remaining battery available power；

Second obtains subelement, the electricity calculated for subtracting first computation subunit from the battery initial quantity of electricity Pond can not electricity consumption, obtain the initial available power of battery；

Second computation subunit, for calculate it is described first obtain subelement obtain remaining battery available power with it is described Second obtains the ratio for the initial available power of battery that subelement obtains, using the ratio as battery real surplus electricity and institute State the second electricity ratio value of battery initial quantity of electricity.

In conjunction with the first possible implementation of second aspect of the embodiment of the present invention, in second aspect of the embodiment of the present invention Second of possible implementation in, first computation subunit includes:

First determining module, for determining the minimum operating voltage value operated normally；

Enquiry module, for inquiring the second open-circuit voltage from the preset electricity ratio value and open-circuit voltage relation table It is worth corresponding third electricity ratio value；

The enquiry module is also used to inquire described the from the preset electricity ratio value and internal resistance of cell relation table The corresponding third internal resistance value of three electricity ratio values；

First computing module, for calculating the third internal resistance value, the internal resistance ratio and the output electric current three Between product and the minimum operating voltage value and value；

Second determining module determines the battery at the current time for calculate according to first computing module and value It can not electricity consumption.

In conjunction with second aspect of the embodiment of the present invention the first to second of possible implementation, in the embodiment of the present invention In the third possible implementation of second aspect, 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, amendment described first to be opened Road voltage value；

Subelement is inquired, for after inquiring the amendment in the preset electricity ratio value and internal resistance of cell relation table The corresponding 4th electricity ratio value of the first open-circuit voltage values；

Third obtains subelement, for calculating the 4th electricity ratio value and first electricity of the inquiry subelement inquiry The difference of ratio value and the product of the battery initial quantity of electricity are measured, the amendment electricity factor is obtained；

4th obtains subelement, adjusts described for obtaining the amendment electricity factor that subelement obtains using the third One electricity ratio value obtains the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity.

In conjunction with second aspect of the embodiment of the present invention the first to the third possible implementation, in the embodiment of the present invention In 4th kind of possible implementation of second aspect, the voltage revise subelemen includes:

Second computing module, for calculating the difference and output electricity of second internal resistance value and first internal resistance value The product of stream obtains open-circuit voltage modifying factor；

Module is obtained, is repaired for first open-circuit voltage values to be subtracted the open-circuit voltage that second computing module obtains Positive divisor obtains revised first open-circuit voltage values.

The third aspect of the embodiment of the present invention discloses a kind of computer storage medium, and the computer storage medium is stored with Program, described program include the steps that described in foregoing invention embodiment when executing.

Fourth aspect of the embodiment of the present invention discloses a kind of terminal, comprising: processor, communication bus, memory and battery；

Wherein, the memory is used to store program,

The communication bus is used for the communication established between the processor and the memory；

The processor is used to call the program of the memory storage, executes following steps:

In the first possible implementation of fourth aspect of the embodiment of the present invention, the processor is according to the internal resistance Ratio corrects the first electricity ratio value, obtains the second electricity ratio of battery real surplus electricity and the battery initial quantity of electricity When example value, following steps are executed:

In conjunction with the first possible implementation of fourth aspect of the embodiment of the present invention, in fourth aspect of the embodiment of the present invention Second of possible implementation in, the processor can not using the battery at current time described in the internal resistance ratio calculation When electricity consumption, following steps are executed:

Determine the minimum operating voltage value operated normally；

In conjunction with fourth aspect of the embodiment of the present invention the first to second of possible implementation, in the embodiment of the present invention In the third possible implementation of fourth aspect, when the internal resistance ratio is less than zero, then the processor is according to Internal resistance ratio corrects the first electricity ratio value, obtains the second electricity of battery real surplus electricity and the battery initial quantity of electricity When measuring ratio value, following steps are executed:

In conjunction with fourth aspect of the embodiment of the present invention the first to the third possible implementation, in the embodiment of the present invention In 4th kind of possible implementation of fourth aspect, the processor is according to first internal resistance value and second internal resistance Value when correcting first open-circuit voltage values, executes following steps:

The battery dump energy at available current time of the embodiment of the present invention and the first electricity ratio of battery initial quantity of electricity Example value；And inquired from preset electricity ratio value and open-circuit voltage relation table the first electricity ratio value it is corresponding first open circuit electricity Pressure value；The of current time battery is calculated according to the output voltage of current time measurement, output electric current and the first open-circuit voltage values One internal resistance value；The first electricity ratio value corresponding second is inquired from preset electricity ratio value and internal resistance of cell relation table Internal resistance value, and calculate the internal resistance ratio of the first internal resistance value and the second internal resistance value；The first electricity ratio is corrected according to the internal resistance ratio Value obtains the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity.As it can be seen that the electricity in the embodiment of the present invention Amount estimation method not only can calculate the error accumulation that current time electricity ratio value generates by Current integrating method to avoid simple, And it can be to avoid the difference due to Experimental modeling and actual environment, only by inquiring preset electricity ratio value and open-circuit voltage Relation table or preset electricity ratio value and internal resistance of cell relation table obtain the inaccuracy of electricity ratio value；The embodiment of the present invention is logical It crosses internal resistance ratio and corrects the first electricity ratio value, obtain the second electricity of battery real surplus electricity and the battery initial quantity of electricity Ratio value, to improve the accuracy of electricity estimation.

Detailed description of the invention

It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, general for this field For logical technical staff, without any creative labor, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is a kind of flow diagram of electricity estimation method disclosed by the embodiments of the present invention；

Fig. 2 is the flow diagram of another electricity estimation method disclosed by the embodiments of the present invention；

Fig. 3 is the flow diagram of another electricity estimation method disclosed by the embodiments of the present invention；

Fig. 4 is a kind of structural schematic diagram of terminal disclosed by the embodiments of the present invention；

Fig. 5 is the structural schematic diagram of another terminal disclosed by the embodiments of the present invention；

Fig. 6 is the structural schematic diagram of another terminal disclosed by the embodiments of the present invention；

Fig. 7 is the structural schematic diagram of another terminal disclosed by the embodiments of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts Example, shall fall within the protection scope of the present invention.

The embodiment of the invention discloses a kind of electricity estimation method and terminals, can be improved the accuracy of electricity estimation.With It is lower to be described in detail respectively.

Referring to Fig. 1, Fig. 1 is a kind of flow diagram of electricity estimation method disclosed by the embodiments of the present invention.Such as Fig. 1 institute Show, which 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 device etc., or other settings There is 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 to indicate the state-of-charge (State of Charge, SOC) at battery current time；Current time First electricity ratio value of battery dump energy and battery initial quantity of electricity can be calculated according to Current integrating method and be obtained, and citing comes It says, the battery dump energy and battery initial quantity of electricity Q that last moment terminal determines₀Electricity ratio value be SOC₁, last moment away from Period from current time is T, according to the efficiency for charge-discharge of battery, the battery release in period T by integral calculation Electricity Q₁, then terminal obtains the battery dump energy at current time and the first electricity ratio of battery initial quantity of electricity in step S101 Value SOC=SOC₁-Q₁/Q₀。

As it can be seen that Current integrating method employed in above-mentioned the first electricity of calculating ratio value does not account for battery itself and is discharging Variation in the process, and use Current integrating method constantly to accumulate error in each period, lead to electricity estimation error Greatly, therefore the first electricity ratio value need to be modified by following steps S102 to S105.

It is corresponding that S102, terminal inquire the first electricity ratio value from preset electricity ratio value and open-circuit voltage relation table First open-circuit voltage values；

In the embodiment of the present invention, preset electricity ratio value and open-circuit voltage relation table are by testing and modeling acquisition , the open-circuit voltage of battery and the electricity ratio value of battery are stored in the preset electricity ratio value and open-circuit voltage relation table Between corresponding relationship.Optionally, not equality of temperature can also be stored in the preset electricity ratio value and open-circuit voltage relation table Corresponding relationship under degree, between the open-circuit voltage of battery and the electricity ratio value of battery.

Output voltage, output electric current and the first open-circuit voltage values that S103, terminal are measured according to current time calculate current First internal resistance value of moment battery；

In the embodiment of the present invention, output voltage, output electric current and the first open-circuit voltage that terminal is measured according to current time The first internal resistance value that value calculates current time battery can be with specifically:

11) terminal calculates the difference of the output voltage of the battery of the first open-circuit voltage values and current time measurement, and should The output electric current for the battery that difference was measured divided by current time 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, electric current Cur, step S101 are exported The the first electricity ratio value SOC obtained₁And the first electricity ratio value SOC₁Corresponding first open-circuit voltage values OCV₁, can be with The first internal resistance value R_Calc of the battery at current time is calculated by following formula (1):

R_Calc=(OCV₁-Volt)/Cur (1)

It is corresponding that S104, terminal inquire the first electricity ratio value from preset electricity ratio value and internal resistance of cell relation table Second internal resistance value, and calculate the internal resistance ratio of the first internal resistance value and the second internal resistance value；

In the embodiment of the present invention, preset electricity ratio value and internal resistance of cell relation table are by testing and modeling acquisition , be stored in the preset electricity ratio value and the internal resistance of cell relation table battery each electricity ratio value and each internal resistance of cell value Between corresponding relationship.Optionally, difference can also be stored in the preset electricity ratio value and internal resistance of cell value relation table At a temperature of, the corresponding relationship between the electricity ratio value and internal resistance of cell value of battery.

S105, terminal correct the first electricity ratio value according to internal resistance ratio, at the beginning of obtaining battery real surplus electricity and battery Second electricity ratio value of beginning electricity.

In the embodiment of the present invention, terminal corrects the principle of the first electricity ratio value according to internal resistance ratio are as follows: assuming that current meter The the first electricity ratio value SOC calculated₁Be accurately, then the first internal resistance value reflection that above-mentioned formula (1) calculates be with by looking into The difference between the second internal resistance value that preset electricity ratio value and internal resistance of cell relation table obtain is ask, in the first of calculating Resistance value amendment is tabled look-up the second internal resistance value of acquisition, so as to more accurately calculate current time battery can not electricity 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 be with according to the principle that internal resistance ratio corrects the first electricity ratio value are as follows: assuming that Between the first electricity ratio value SOC and practical electricity ratio value currently calculated it is variant and by inquiring preset electricity ratio The second internal resistance value that value and internal resistance of cell relation table obtain is accurately the first internal resistance value reflection that then above-mentioned formula (1) calculates Be by inquiring the first open-circuit voltage values and current time that preset electricity ratio value and open-circuit voltage relation table obtain Difference between true open-circuit voltage values, then the first internal resistance value that can be calculated by formula (1) correct the first open-circuit voltage values, The first electricity ratio value is corrected eventually by revised first open-circuit voltage values, to obtain battery real surplus electricity and electricity Second electricity ratio value of pond initial quantity of electricity.

In the electricity estimation method described in Fig. 1, terminal obtains the battery dump energy and battery at current time first First electricity ratio value of initial quantity of electricity；And the first electricity ratio is inquired from preset electricity ratio value and open-circuit voltage relation table Example is worth corresponding first open-circuit voltage values；According to the output voltage of current time measurement, output electric current and the first open-circuit voltage values Calculate the first internal resistance value of current time battery；Then, terminal is looked into from preset electricity ratio value and internal resistance of cell relation table Corresponding second internal resistance value of the first electricity ratio value is ask, and calculates the internal resistance ratio of the first internal resistance value and the second internal resistance value； The first electricity ratio value is corrected according to the internal resistance ratio, obtains the second electricity of battery real surplus electricity and battery initial quantity of electricity Ratio value.

As it can be seen that the electricity estimation method in the embodiment of the present invention can not only be worked as to avoid simple by Current integrating method calculating The error accumulation that preceding moment electricity ratio value generates；And can only it lead to avoid the difference due to Experimental modeling and actual environment It crosses and inquires preset electricity ratio value and open-circuit voltage relation table or preset electricity ratio value and the acquisition of internal resistance of cell relation table The inaccuracy of electricity ratio value；The embodiment of the present invention corrects the first electricity ratio value by internal resistance ratio, and it is practical surplus to obtain battery Second electricity ratio value of remaining electricity and the battery initial quantity of electricity, to improve the accuracy of electricity estimation.

Fig. 2 is referred to, Fig. 2 is the flow diagram of another electricity estimation method disclosed by the embodiments of the present invention；Wherein, Electricity estimation method shown in Fig. 2 is to determine that battery can not electricity consumption the first electricity ratio value of amendment by internal resistance ratio. As shown in Fig. 2, the electricity estimation method 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；

It is corresponding that S202, terminal inquire the first electricity ratio value from preset electricity ratio value and open-circuit voltage relation table First open-circuit voltage values；

Output voltage, output electric current and the first open-circuit voltage values that S203, terminal are measured according to current time calculate current First internal resistance value of moment battery；

It is corresponding that S204, terminal inquire the first electricity ratio value from preset electricity ratio value and internal resistance of cell relation table 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 and step S101 in foregoing invention embodiment to S104 content phase Together, it specifically may refer to the description in foregoing invention embodiment, it will not be described here.

S205, terminal can not electricity consumptions using the battery at internal resistance ratio calculation current time；

In the embodiment of the present invention, with the influence of discharge regime and discharge time where battery, the electricity ratio value of battery And the relationship of the internal resistance of cell can and the relationship of preset electricity ratio value and the internal resistance of cell there are deviations, in turn, cause each Moment battery can not electricity consumption also changing, the battery can not electricity consumption refer to the presence due to the internal resistance of cell, internal resistance has point Pressure, so that a part of electricity that can not be exported in battery discharge procedure.Therefore, the battery at terminal adjustable current time can not Electricity consumption specific gravity reaches the amendment to the first electricity ratio value at current time, obtains battery real surplus electricity and the electricity Second electricity ratio value of pond initial quantity of electricity.

In the embodiment of the present invention, terminal can not electricity consumption using the battery at internal resistance ratio calculation current time in step S205 Can with specifically includes the following steps:

21) terminal determines the minimum operating voltage value operated normally；

22) terminal inquires the second open-circuit voltage values corresponding from preset electricity ratio value and open-circuit voltage relation table Three electricity ratio values；

23) terminal from preset electricity ratio value with third electricity ratio value corresponding the is inquired in internal resistance of cell relation table Three internal resistance values；

24) terminal calculates product and minimum work electricity between third internal resistance value, internal resistance ratio and output electric current three Pressure value and value；Second open-circuit voltage values be found from preset electricity ratio value and open-circuit voltage relation table with this and Value differs the smallest open-circuit voltage values；

25) terminal determines that the battery at current time can not electricity consumption according to value.

In the embodiment of the present invention, the battery can not electricity consumption can terminal (or each device in terminal) is normal to be transported according to maintaining The partial pressure that internal resistance generates when capable minimum operating voltage value and electric discharge end obtains.Wherein, the electric discharge end that current time calculates The partial pressure that internal resistance generates can be obtained according to step 22) to step 24), i.e. third internal resistance value, internal resistance ratio and output electric current Product between three is the partial pressure that the electric discharge end internal resistance calculated at current time generates.As it can be seen that as described above, the present invention is implemented In example, by the internal resistance ratio at current time correct battery can not internal resistance value in electricity consumption so that current time calculates Battery can not electricity consumption be more nearly actual battery can not electricity consumption.

For example, if the minimum operating voltage value that each device operates normally in terminal or terminal is 3.2V, in output electricity In the case that stream is Cur, a smallest open-circuit voltage OCV is searched from preset electricity ratio value and open-circuit voltage relation table₁, Open-circuit voltage OCV1 can be outside the voltage drop that internal resistance generates, and maintenances output voltage is 3.2V, and from preset electricity ratio Open-circuit voltage values OCV is inquired in value and open-circuit voltage relation table₁Corresponding third electricity ratio value SOC₃, from preset electricity ratio Third electricity ratio value SOC is inquired in example value and internal resistance of cell relation table₃Corresponding third internal resistance value R_Calc₃, then this is opened Road voltage value OCV₁The voltage generated in internal resistance is reduced to R_Calc₃× Cur, in addition, the internal resistance ratio calculated by step S204 The deviation that Ratio reflects the first internal resistance value of calculating between the second internal resistance value for tabling look-up, and the internal resistance ratio is identical Under the conditions of with electric discharge end calculate internal resistance differed seldom with the ratio for the internal resistance tabled look-up, can by current time calculating in Resistance ratio amendment electric discharge end, which is tabled look-up, obtains internal resistance ratio, therefore open-circuit voltage values OCV₁The voltage generated in internal resistance is reduced to Ratio×R_Calc₃× Cur, thus battery can not electricity consumption can be that generate in 3.2V and internal resistance according to minimum operating voltage value Voltage drop Ratio × R_Calc₃The sum of × Cur is determined.

S206, terminal subtracted from battery dump energy battery can not electricity consumption, obtain remaining battery available power；

In the embodiment of the present invention, which is what the electric quantity integration method according to described in S101 obtained, from In subtract battery can not electricity consumption, can be obtained the remaining battery available power at current time.

S207, terminal subtracted from battery initial quantity of electricity battery can not electricity consumption, obtain the initial available power of battery；

In the embodiment of the present invention, which is referred to as the initial full capacity of battery or the specified appearance of battery Amount, therefrom subtract battery can not electricity consumption, can be obtained the initial available power of battery.

S208, terminal calculate the ratio of remaining battery available power and the initial available power of battery, using the ratio as electricity Second electricity ratio value of pond real surplus electricity and battery initial quantity of electricity.

In the embodiment of the present invention, by step S205 can calculate in current time battery can not electricity consumption, pass through Step S206 can obtain remaining battery available power, can obtain the initial available power of battery, step by step S207 Terminal calculates remaining battery available power in S208 and the ratio of the initial available power of battery can be obtained battery real surplus electricity Second electricity ratio value of amount and battery initial quantity of electricity.

In the electricity estimation method described in Fig. 2, the first internal resistance value that terminal is calculated by current time is obtained with tabling look-up The second internal resistance value ratio amendment battery can not internal resistance in electricity consumption so that battery can not electricity consumption closer to actual battery Can not electricity consumption, and then terminal subtracted from battery dump energy the battery can not electricity consumption, obtain remaining battery available power； Subtracted from battery initial quantity of electricity the battery can not electricity consumption, obtain the initial available power of battery；Calculating remaining battery can electricity consumption Amount and the ratio of the initial available power of battery as current time battery real surplus electricity and the battery initial quantity of electricity the Two electricity ratio values, it is seen then that the second electricity ratio value more really reflects the state-of-charge of current time battery, improves The accuracy of electricity estimation, so that user can make rational planning for according to the second electricity ratio value user of terminal Case.

Referring to Fig. 3, Fig. 3 is the flow diagram of another electricity estimation method disclosed by the embodiments of the present invention.Work as end When the first electricity ratio value that end current time is calculated by Current integrating method is less than practical electricity ratio value, the of acquisition of tabling look-up One open-circuit voltage values are likely less than the output voltage of battery, so that the internal resistance ratio of battery less than zero, passes through step 21) extremely at this time 25) battery calculated can not electricity consumption also close to zero so that battery can not electricity consumption can not play the first electricity ratio of amendment The effect of value, and electricity estimation method shown in Fig. 3 can be when internal resistance ratio be greater than or equal to zero, then it can be by battery not Available power corrects the first electricity ratio value；It, then can be by amendment open-circuit voltage values to correct when internal resistance ratio is less than zero First electricity ratio value, specifically, as shown in figure 3, the electricity estimation method 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；

It is corresponding that S302, terminal inquire the first electricity ratio value from preset electricity ratio value and open-circuit voltage relation table First open-circuit voltage values；

Output voltage, output electric current and the first open-circuit voltage values that S303, terminal are measured according to current time calculate current First internal resistance value of moment battery；

It is corresponding that S304, terminal inquire the first electricity ratio value from preset electricity ratio value and internal resistance of cell relation table Second internal resistance value, and calculate the internal resistance ratio of the first internal resistance value and the second internal resistance value；

In the embodiment of the present invention, step S301 to S304 can refer to the elaboration of step S101 to S104, here no longer in detail It states.

S305, terminal judge whether the internal resistance ratio is greater than or equal to zero, if so, thening follow the steps S306 to S309；It is no Then, step S310 to S313 is executed.

S306, terminal can not electricity consumptions using the battery at the internal resistance ratio calculation current time；

S307, terminal subtracted from battery dump energy the battery can not electricity consumption, obtain remaining battery available power；

S308, terminal subtracted from battery initial quantity of electricity battery can not electricity consumption, obtain the initial available power of battery；

S309, terminal calculate the ratio of remaining battery available power and the initial available power of battery, using the ratio as electricity Second electricity ratio value of pond real surplus electricity and battery initial quantity of electricity；

In the embodiment of the present invention, step S306 to S309 can be with reference to step S205 in foregoing invention embodiment to S208's It is specifically described, 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 according to the first internal resistance value and the second internal resistance value, can be with Specifically includes the following steps:

31) terminal calculates the difference of the second internal resistance value and the first internal resistance value and the product of current time output electric current, 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 Value.

S311, terminal inquire revised first open-circuit voltage from preset electricity ratio value and internal resistance of cell relation table It is worth corresponding 4th electricity ratio value；

S312, terminal calculate the 4th electricity ratio value and the first difference of electricity ratio value and multiplying for battery initial quantity of electricity Product obtains 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 electricity consumption.

S313, terminal using the amendment electricity factor adjust the first electricity ratio value, obtain battery real surplus electricity with Second electricity ratio value of battery initial quantity of electricity.

In the embodiment of the present invention, since internal resistance ratio is less than zero, illustrate that open-circuit voltage is less than output voltage, i.e. the first electricity Ratio value is less than actual electricity ratio value, therefore terminal adjusts the first electricity ratio value using the amendment electricity factor and can have Body is that the first electricity ratio value adds the amendment electricity factor, to obtain battery real surplus electricity and battery initial quantity of electricity Second electricity ratio value, it should be noted that at this point, need not consider that the battery in the first electricity ratio value can not electricity consumption.

In the electricity estimation method described in Fig. 3, terminal first determine whether the first internal resistance value of the calculating at current time with Whether the ratio of the second internal resistance value of acquisition of tabling look-up is greater than or equal to zero, if so, the electricity estimation side that can be retouched using Fig. 2 Method, by calculate current time battery can not electricity consumption correct the first electricity ratio value, obtain battery real surplus electricity with Second electricity ratio value of battery initial quantity of electricity；If it is not, when then can correct current using the open-circuit voltage at amendment current time The the first electricity ratio value carved, to obtain the second electricity ratio value of battery real surplus electricity Yu battery initial quantity of electricity.It can To see, the embodiment of the present invention can use corresponding electricity estimation method according to internal resistance ratio in the different moments of battery discharge, from And further improve the accuracy of electricity estimation.

It should be noted that terminal can any time in battery discharge or the battery electric quantity state that is customized by the user Show the moment by any described electricity estimation method of Fig. 1 to Fig. 3 calculate current time battery real surplus electricity with Second electricity ratio value of battery initial quantity of electricity, and the second electricity ratio value is exported, so that user makes rational planning for, terminal makes Use scheme.

The embodiment of the invention also discloses a kind of computer storage mediums, wherein the computer storage medium can be stored with Program, the program include some or all of the electricity estimation method recorded in the embodiment of the method for above-mentioned Fig. 1 to Fig. 3 when executing Step.

Fig. 4 is referred to, Fig. 4 is a kind of structural schematic diagram of terminal disclosed by the embodiments of the present invention, as shown in figure 4, the end End may include with lower unit.

Acquiring unit 400, for obtaining the battery dump energy at current time and the first electricity ratio of battery initial quantity of electricity Example value；

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 to indicate the state-of-charge (Sate of Charge, SOC) at battery current time；The electricity at current time First electricity ratio value of pond remaining capacity and battery initial quantity of electricity can be calculated according to Current integrating method and be obtained, for example, The battery dump energy and battery initial quantity of electricity Q that last moment terminal determines₀Electricity ratio value be SOC₁, last moment distance The period at current time is T, according to the efficiency for charge-discharge of battery, passes through the integral calculation electricity that battery discharges in period T Measure Q₁, then acquiring unit 400 obtains the battery dump energy at current time and the first electricity ratio value SOC of battery initial quantity of electricity =SOC₁-Q₁/Q₀。

As it can be seen that Current integrating method employed in above-mentioned the first electricity of calculating ratio value does not account for battery itself and is discharging Variation in the process, and use Current integrating method constantly to accumulate error in each period, lead to electricity estimation error Greatly, therefore the first electricity ratio value need to be repaired by following query unit 500, computing unit 600 and amending unit 700 Just.

Query unit 500, for being obtained from preset electricity ratio value and inquiry acquiring unit 400 in open-circuit voltage relation table Corresponding first open-circuit voltage values of the first electricity ratio value taken；

Computing unit 600, output voltage, output electric current and query unit 500 for being measured according to current time are inquired The first open-circuit voltage values calculate current time battery the first internal resistance value；

As an example it is assumed that the output voltage of the battery of current time measurement is Volt, electric current Cur is exported, according to acquisition The first electricity ratio value SOC that unit 400 obtains₁And 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 also used to from preset electricity ratio value and internal resistance of cell relation table Inquire corresponding second internal resistance value of the first electricity ratio value that acquiring unit 400 obtains；

In the embodiment of the present invention, computing unit 600 is also used to calculate that the first internal resistance value and query unit 500 inquire the The internal resistance ratio of two internal resistance values；

Amending unit 700, the internal resistance ratio amendment acquiring unit 400 for being calculated according to computing unit 600 obtain the One electricity ratio value 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 corrects the principle of the first electricity ratio value according to internal resistance ratio are as follows: assuming that The the first electricity ratio value SOC currently calculated₁Be accurately, then above-mentioned formula (1) calculate the first internal resistance value reflection be with By the difference inquired between the second internal resistance value that preset electricity ratio value and internal resistance of cell relation table obtain, pass through calculating First internal resistance value corrects the second internal resistance value of acquisition of tabling look-up, so as to which more accurately the battery at calculating current time is unavailable Electricity, 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 be with according to the principle that internal resistance ratio corrects the first electricity ratio value Are as follows: assuming that variant between the first electricity ratio value SOC and practical electricity ratio value that currently calculate and preset by inquiring The second internal resistance value that electricity ratio value and internal resistance of cell relation table obtain is accurately, then in the first of above-mentioned formula (1) calculating Resistance value reflection is by inquiring the first open-circuit voltage values that preset electricity ratio value is obtained with open-circuit voltage relation table and working as Difference between the true open-circuit voltage values at preceding moment, then the first internal resistance value amendment first that can be calculated by formula (1) are opened Road voltage value corrects the first electricity ratio value eventually by revised first open-circuit voltage values, so that it is practical surplus to obtain battery Second electricity ratio value of remaining electricity and battery initial quantity of electricity.

In the embodiment of the present invention, terminal described in Fig. 4 can pass through acquiring unit 400, query unit 500 and calculating Unit 600 calculates the first internal resistance value of current time battery, and inquires that acquiring unit 400 obtains by query unit 500 Corresponding second internal resistance value of one electricity ratio value, allows amending unit 700 according to first internal resistance value and the second internal resistance value Internal resistance ratio correct the first electricity ratio value, obtain battery real surplus electricity and battery initial quantity of electricity the second electricity ratio Value.As it can be seen that terminal described in Fig. 4 not only can calculate the production of current time electricity ratio value by Current integrating method to avoid simple Raw error accumulation；And it can be to avoid the difference due to Experimental modeling and actual environment, only by inquiring preset electricity ratio Example value obtains the inaccuracy of electricity ratio value with open-circuit voltage relation table or preset electricity ratio value and internal resistance of cell relation table； Terminal described in the embodiment of the present invention by internal resistance ratio correct the first electricity ratio value, obtain battery real surplus electricity with Second electricity ratio value of the pond initial quantity of electricity, to improve the accuracy of electricity estimation.

Please also refer to Fig. 5, Fig. 5 is the structural schematic diagram of another terminal disclosed by the embodiments of the present invention, shown in fig. 5 Terminal is removed including acquiring unit 400, query unit 500, computing unit 600 and the amending unit 700 in terminal shown in Fig. 4 Outside, 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 It can not electricity consumption；

First obtains subelement 720, for subtracting the battery of the first computation subunit 710 calculating from battery dump energy Can not electricity consumption, obtain remaining battery available power；

In the embodiment of the present invention, which can be obtained by electric quantity integration method, first obtain subelement 720 from In subtract battery can not electricity consumption, can be obtained the remaining battery available power at current time.

Second obtains subelement 730, for subtracting the battery of the first computation subunit 710 calculating from battery initial quantity of electricity Can not electricity consumption, obtain the initial available power of battery；

In the embodiment of the present invention, which is referred to as the initial full capacity of battery or the specified appearance of battery Amount, second acquisition subelement 730 therefrom subtract battery can not electricity consumption, can be obtained the initial available power of battery.

Second computation subunit 740, the remaining battery available power and the obtained for calculating the first acquisition subelement 720 Two obtain the ratio for the initial available power of battery that subelement 720 obtains, using the ratio as battery real surplus electricity and electricity Second electricity ratio value of pond initial quantity of electricity.

In the embodiment of the present invention, with the influence of discharge regime and discharge time where battery, the electricity ratio value of battery And the relationship of the internal resistance of cell can and the relationship of preset electricity ratio value and the internal resistance of cell there are deviations, in turn, cause each Moment battery can not electricity consumption also changing, the battery can not electricity consumption refer to the presence due to the internal resistance of cell, internal resistance has point Pressure, so that a part of electricity that can not be exported in battery discharge procedure.Therefore, amending unit 700 adjustable current time The unavailable electricity specific gravity of battery reaches the amendment to the first electricity ratio value at current time, obtains battery real surplus electricity With the second electricity ratio value of the battery initial quantity of electricity.

In the embodiment of the present invention, in terminal shown in Fig. 5, the first computation subunit 710 may include with lower module:

Enquiry module, for inquiring the second open-circuit voltage values pair from preset electricity ratio value and open-circuit voltage relation table The third electricity ratio value answered；

Enquiry module is also used to inquire institute's third electricity ratio from preset electricity ratio value and internal resistance of cell relation table It is worth corresponding third internal resistance value；

First computing module, for calculate third internal resistance value, internal resistance ratio and output electric current three between product with First determining module determine minimum operating voltage value and value；

Wherein, the second open-circuit voltage values are to be found from preset electricity ratio value and open-circuit voltage relation table with the One computing module calculates and value differs the smallest open-circuit voltage values；

Second determining module determines that the battery at current time can not electricity consumption for calculate according to the first computing module and value Amount.

In the embodiment of the present invention, the second determining module determines that the battery at current time can not can trigger when electricity consumption One, which obtains subelement 720, obtains remaining battery available power, and triggering second obtains subelement and obtains the initial available power of battery, from And make the second computation subunit 740 using the ratio of the remaining battery available power and the initial available power of the battery as battery Second electricity ratio value of real surplus electricity and battery initial quantity of electricity.

In the embodiment of the present invention, the battery can not electricity consumption can terminal (or each device in terminal) is normal to be transported according to maintaining The partial pressure that internal resistance generates when capable minimum operating voltage value and electric discharge end obtains.Wherein, the electric discharge end that current time calculates The partial pressure that internal resistance generates can be obtained by enquiry module and the first computing module, i.e. third internal resistance value, internal resistance ratio and defeated The product between electric current three is the partial pressure that the electric discharge end internal resistance calculated at current time generates out.As it can be seen that as described above, this hair In bright embodiment, the first computing module by the internal resistance ratio at current time correct battery can not internal resistance value in electricity consumption, from And make current time calculate battery can not electricity consumption be more nearly actual battery can not electricity consumption.

For example, if the minimum operating voltage value that each device operates normally in terminal or terminal is 3.2V, in output electricity In the case that stream is Cur, a smallest open-circuit voltage OCV is searched from preset electricity ratio value and open-circuit voltage relation table₁, Open-circuit voltage OCV1 can be outside the voltage drop that internal resistance generates, and maintenances output voltage is 3.2V, and from preset electricity ratio Open-circuit voltage values OCV is inquired in value and open-circuit voltage relation table₁Corresponding third electricity ratio value SOC₃, from preset electricity ratio Third electricity ratio value SOC is inquired in example value and internal resistance of cell relation table₃Corresponding third internal resistance value R_Calc₃, then this is opened Road voltage value OCV₁The voltage generated in internal resistance is reduced to R_Calc₃× Cur, in addition, the internal resistance calculated by computing unit 600 The deviation that ratio R atio reflects the first internal resistance value of calculating between the second internal resistance value for tabling look-up, and the internal resistance ratio exists The internal resistance calculated under the same terms with electric discharge end differs seldom with the ratio for the internal resistance tabled look-up, and can be calculated by current time Internal resistance ratio amendment electric discharge end table look-up and obtain internal resistance ratio, therefore open-circuit voltage values OCV₁The voltage generated in internal resistance It is reduced to Ratio × R_Calc₃× Cur, thus battery can not electricity consumption can be in 3.2V and internal resistance according to minimum operating voltage value Voltage drop Ratio × R_Calc of generation₃The sum of × Cur is determined.

Terminal described in Fig. 5 obtains internal resistance ratio by acquiring unit 400, query unit 500 and computing unit 600 Afterwards, by the first computation subunit 710 in amending unit 700 calculate current time battery can not electricity consumption, and obtained by first Take subelement 720 subtracted from battery dump energy the battery can not electricity consumption, obtain remaining battery available power；Second obtains Subelement 730 subtracted from battery initial quantity of electricity the battery can not electricity consumption, obtain the initial available power of battery；Finally by second Computation subunit 740 calculates remaining battery available power and the ratio of the initial available power of battery is practical as current time battery Second electricity ratio value of remaining capacity and battery initial quantity of electricity, it is seen then that the second electricity ratio value more really reflects The state-of-charge of current time battery improves the accuracy of electricity estimation, so that user can be according to second electricity Ratio value is made rational planning for the operational version of terminal.

Fig. 6 is referred to again, and Fig. 6 is the structural schematic diagram of another terminal disclosed by the embodiments of the present invention, end shown in fig. 6 Compared with terminal shown in fig. 5, terminal shown in fig. 6 can be when internal resistance ratio be less than zero, using amendment open-circuit voltage values at end To correct the electricity estimation method of the first electricity ratio value, specifically, it includes in terminal shown in Fig. 5 that terminal shown in fig. 6, which is removed, Outside unit, subelement, amending unit 700 can also include following subelement.

Voltage revise subelemen 750, the first internal resistance value and query unit 500 for being calculated according to computing unit 600 are looked into The second internal resistance value ask corrects the first open-circuit voltage values；

Subelement 760 is inquired, for inquiry voltage amendment from preset electricity ratio value and internal resistance of cell relation table The corresponding 4th electricity ratio value of revised first open-circuit voltage values of unit 750；

Third obtains subelement 770, for calculating the 4th electricity ratio value and acquiring unit that inquiry subelement 760 is inquired The difference of 400 the first electricity ratio values obtained and the product of battery initial quantity of electricity, obtain the amendment electricity factor；

4th obtains subelement 780, for obtaining the amendment electricity factor adjustment first that subelement 770 obtains using third Electricity ratio value obtains the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity.

It can also include judgment sub-unit 790, judgement in amending unit 700 shown in fig. 6 in the embodiment of the present invention Unit 790 is used to trigger the first computation subunit when the internal resistance ratio for judging that computing unit 600 calculates is greater than or equal to zero 710 using computing unit 600 calculate internal resistance ratio calculation current times battery can not electricity consumption, and by first obtain son Unit 720, second obtains subelement 730 and the second computation subunit 740, and remaining battery available power is just begun with battery Second electricity ratio value of the ratio of electricity consumption as battery real surplus electricity and battery initial quantity of electricity；Work as judgment sub-unit 790 when judging the internal resistance ratio of the calculating of computing unit 600 less than zero, and the amendment of trigger voltage revise subelemen 750 first is opened Road voltage value, and subelement 770 and the 4th acquisition acquisition amendment electricity of subelement 780 are obtained by inquiry subelement 760, third It measures the factor and adjusts the first electricity ratio value, obtain the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity.

In the terminal described in Fig. 6, voltage revise subelemen 750 can also be comprised the following modules:

Second computing module 751, the second internal resistance value and computing unit 600 for calculating the inquiry of query unit 500 calculate The first internal resistance value difference and output electric current product, obtain open-circuit voltage modifying factor；

Module 752 is obtained, for 500 first open-circuit voltage values of query unit to be subtracted what the second computing module 751 obtained Open-circuit voltage modifying factor obtains revised first open-circuit voltage values.

In terminal described in Fig. 6, judgment sub-unit 790 can judge current time calculate the first internal resistance value with Table look-up acquisition the second internal resistance value ratio be greater than or equal to zero when, triggering the first computation subunit 710, first obtain subelement 720, second obtain subelement 730 and the second computation subunit 740 calculate the battery at current time can not electricity consumption amendment the One electricity ratio value obtains the second electricity ratio value of battery real surplus electricity and battery initial quantity of electricity；If it is not, can then touch Power generation pressure revise subelemen 750, inquiry subelement 760, third obtain subelement 770 and the 4th acquisition subelement 780 is corrected First open-circuit voltage values at current time are to correct the first electricity ratio value at current time, to obtain battery real surplus electricity Second electricity ratio value of amount and battery initial quantity of electricity.As it can be seen that terminal described in the embodiment of the present invention can be in battery discharge Different moments, according to internal resistance ratio use corresponding electricity estimation method, thus further improve electricity estimation it is accurate Degree.

It should be noted that any described terminal of fig. 4 to fig. 6 can be in any time of battery discharge or by user Customized battery electric quantity state shows that the moment calculates the second of current time battery real surplus electricity and battery initial quantity of electricity Electricity ratio value, 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 schematic diagram of another terminal disclosed by the embodiments of the present invention, as shown in fig. 7, should Terminal may 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 for realizing the connection communication between these components.Memory 830 can be height Fast RAM memory is also possible to non-labile memory (non-volatile memory), and a for example, at least disk is deposited Reservoir.Memory 830 optionally can also be that at least one is located remotely from the storage device of aforementioned processor 810.Such as Fig. 7 institute Show, as may include electricity estimation program in a kind of memory 830 of computer storage medium.

In terminal shown in Fig. 7, processor 810 can be used for calling the electricity estimation program stored in memory 830, And execute following operation:

Obtain the first electricity ratio value of the battery dump energy at current time and the battery initial quantity of electricity of battery 840；

The first electricity ratio value corresponding first is inquired from preset electricity ratio value and open-circuit voltage relation table to open a way Voltage value；

Current time battery is calculated according to the output voltage of current time measurement, output electric current and the first open-circuit voltage values First internal resistance value；

Corresponding second internal resistance of the first electricity ratio value is inquired from preset electricity ratio value and internal resistance of cell relation table Value, and calculate the internal resistance ratio of the first internal resistance value and the second internal resistance value；

The first electricity ratio value is corrected according to internal resistance ratio, obtains the of battery real surplus electricity and battery initial quantity of electricity Two electricity ratio values.

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 to indicate the state-of-charge (Sate of Charge, SOC) at battery current time；The electricity at current time First electricity ratio value of pond remaining capacity and battery initial quantity of electricity can be calculated according to Current integrating method and be obtained, for example, The electricity ratio value of battery dump energy and battery initial quantity of electricity Q0 that last moment terminal determines is SOC₁, last moment distance The period at current time is T, according to the efficiency for charge-discharge of battery, passes through the integral calculation electricity that battery discharges in period T Measure Q₁, 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, output voltage, output electric current and the first open circuit that processor 810 is measured according to current time The first internal resistance value that voltage value calculates current time battery can be with specifically: calculates the first open-circuit voltage values and current time measures Battery output voltage difference, and the output electric current for the battery that the difference was measured divided by current time, when obtaining current Carve the first internal resistance value of battery.

As an example it is assumed that the output voltage of the battery of current time measurement is Volt, electric current Cur, step S101 are exported The the first electricity ratio value SOC obtained₁And the first electricity ratio value SOC₁Corresponding first open-circuit voltage values OCV₁, can be with The first internal resistance value R_Calc of the battery at current time is calculated by above-mentioned formula (1).

In the embodiment of the present invention, processor 810 can be used for calling the electricity estimation program stored in memory 830, root The first electricity ratio value is corrected according to internal resistance ratio, obtains the second electricity of battery real surplus electricity and the battery initial quantity of electricity Ratio value can specifically include following operation:

It can not electricity consumption using the battery at internal resistance ratio calculation current time；

Subtracted from battery dump energy battery can not electricity consumption, obtain remaining battery available power；

Subtracted from battery initial quantity of electricity battery can not electricity consumption, obtain the initial available power of battery；

The ratio for calculating remaining battery available power and the initial available power of battery, using ratio as battery real surplus electricity Second electricity ratio value of amount and battery initial quantity of electricity.

In the embodiment of the present invention, processor 810 can be used for calling the electricity estimation program stored in memory 830, benefit With the battery at internal resistance ratio calculation current time can not electricity consumption, can specifically execute following operation:

Determine the minimum operating voltage value operated normally；

The corresponding third electricity of the second open-circuit voltage values is inquired from preset electricity ratio value and open-circuit voltage relation table Ratio value；

From the third internal resistance corresponding with third electricity ratio value is inquired in internal resistance of cell relation table of preset electricity ratio value Value；

Calculate third internal resistance value, internal resistance ratio and output electric current three between product and minimum operating voltage value and Value；

Wherein, the second open-circuit voltage values be found from preset electricity ratio value and open-circuit voltage relation table with Value differs the smallest open-circuit voltage values；

Determine that the battery at current time can not electricity consumption according to value.

In the embodiment of the present invention, the battery can not electricity consumption can terminal (or each device in terminal) is normal to be transported according to maintaining The partial pressure that internal resistance generates when capable minimum operating voltage value and electric discharge end obtains.Wherein, the electric discharge end that current time calculates The partial pressure that internal resistance generates is the product between third internal resistance value, internal resistance ratio and output electric current three.As it can be seen that when passing through current The internal resistance ratio amendment battery at quarter can not internal resistance value in electricity consumption, the battery that may make current time to calculate can not electricity consumption more The nearly actual battery of adjunction can not electricity consumption.

For example, if the minimum operating voltage value that each device operates normally in terminal or terminal is 3.2V, in output electricity In the case that stream is Cur, a smallest open-circuit voltage OCV is searched from preset electricity ratio value and open-circuit voltage relation table₁, Open-circuit voltage OCV₁Can be outside the voltage drop that internal resistance generates, maintenances output voltage is 3.2V, and from preset electricity ratio Open-circuit voltage values OCV is inquired in value and open-circuit voltage relation table₁Corresponding third electricity ratio value SOC₃, from preset electricity ratio The corresponding third internal resistance value R_Calc of the third electricity ratio value SOC3 is inquired in example value and internal resistance of cell relation table₃, then should Open-circuit voltage values OCV₁The voltage generated in internal resistance is reduced to R_Calc₃× Cur, in addition, the internal resistance ratio that processor device 810 calculates The deviation that value Ratio reflects the first internal resistance value of calculating between the second internal resistance value for tabling look-up, and the internal resistance ratio is in phase The internal resistance calculated under the conditions of with electric discharge end differs seldom with the ratio for the internal resistance tabled look-up, and can be calculated by current time Internal resistance ratio amendment electric discharge end, which is tabled look-up, obtains internal resistance ratio, therefore open-circuit voltage values OCV₁The voltage drop generated in internal resistance For Ratio × R_Calc₃× Cur, thus battery can not electricity consumption can be that produce in 3.2V and internal resistance according to minimum operating voltage value Raw voltage drop Ratio × R_Calc₃The sum of × Cur is determined.

In the embodiment of the present invention, processor 810 can be used for calling the electricity estimation program stored in memory 830, When internal resistance ratio is less than zero, the first electricity ratio value is corrected according to the internal resistance ratio, obtains battery real surplus electricity With the second electricity ratio value of the battery initial quantity of electricity, can with specifically includes the following steps:

According to the first internal resistance value and the second internal resistance value, the first open-circuit voltage values are corrected；

It is corresponding that revised first open-circuit voltage values are inquired from preset electricity ratio value and internal resistance of cell relation table 4th electricity ratio value；

The difference of the 4th electricity ratio value and the first electricity ratio value and the product of battery initial quantity of electricity are calculated, is corrected The electricity factor；

The first electricity ratio value is adjusted using the amendment electricity factor, obtains battery real surplus electricity and battery initial quantity of electricity The second electricity ratio value.

In the embodiment of the present invention, processor 810 can be used for calling the electricity estimation program stored in memory 830, root According to the first internal resistance values and the second internal resistance value, the first open-circuit voltage values are corrected, can specifically execute following steps:

The difference of the second internal resistance value and the first internal resistance value and the product of the output electric current are calculated, open-circuit voltage amendment is obtained The factor；

First open-circuit voltage values are subtracted into open-circuit voltage modifying factor, obtain revised first open-circuit voltage values.

In terminal described in Fig. 7, processor can call the electricity estimation program in memory, calculate current time Battery can not electricity consumption, by this can not electricity consumption correct the first electricity ratio value, with obtain battery real surplus electricity and electricity Second electricity ratio value of pond initial quantity of electricity；The first internal resistance value and acquisition of tabling look-up that processor can also calculate at current time When internal resistance ratio between second internal resistance value is less than zero, using the first of the open-circuit voltage amendment current time at amendment current time Electricity ratio value, to obtain the second electricity ratio value of battery real surplus electricity Yu battery initial quantity of electricity.As it can be seen that of the invention Embodiment can use corresponding electricity estimation method according to internal resistance ratio, thus further in the different moments of battery discharge Raising electricity estimation accuracy.

It should be noted that " first ", " second ", " third ", " the 4th " etc. are only used for mutual differentiation, rather than indicate it Significance level and sequence etc..Herein, " the first electricity ratio value ", " the second electricity ratio value " etc. are for distinguishing numerical value not Same electricity ratio value does not represent them with different types；" the first open-circuit voltage values ", " second open-circuit voltage values " etc. are used In distinguishing the different open-circuit voltage values of numerical value, them are not represented with different types；" the first internal resistance value ", " the second internal resistance value " Deng for distinguishing the different internal resistance value of numerical value, them are not represented with different types.

It should be noted that for simple description, therefore, it is stated as a systems for each embodiment of the method above-mentioned The combination of actions of column, but those skilled in the art should understand that, the application is not limited by the described action sequence, because For according to the application, certain some step be can be performed in other orders or simultaneously.Secondly, those skilled in the art also should Know, the embodiments described in the specification are all preferred embodiments, related actions and modules not necessarily this Shen It please be necessary.

In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in some embodiment Part, reference can be made to the related descriptions of other embodiments.

Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can It is completed with instructing relevant hardware by program, which can be stored in a computer readable storage medium, storage Medium may include: flash disk, read-only memory (Read-Only Memory, ROM), random access device (Random Access Memory, RAM), disk or CD etc..

It is provided for the embodiments of the invention electricity estimation method above and terminal is described in detail, it is used herein A specific example illustrates the principle and implementation of the invention, and the above embodiments are only used to help understand Method and its core concept of the invention；At the same time, for those skilled in the art is having according to the thought of the present invention There will be changes in body embodiment and application range, in conclusion the content of the present specification should not be construed as to the present invention Limitation.

Claims

1. a kind of electricity estimation method characterized by comprising

Current time battery is calculated according to the output voltage of current time measurement, output electric current and first open-circuit voltage values First internal resistance value；

Corresponding second internal resistance of the first electricity ratio value is inquired from preset electricity ratio value and internal resistance of cell relation table Value, and calculate the internal resistance ratio of first internal resistance value Yu second internal resistance value；

When the internal resistance ratio is greater than or equal to zero, the battery using current time described in the internal resistance ratio calculation is unavailable Electricity；Subtracted from the battery dump energy battery can not electricity consumption, obtain remaining battery available power；From the electricity Subtracted in the initial quantity of electricity of pond the battery can not electricity consumption, obtain the initial available power of battery；It is available to calculate the remaining battery The ratio of electricity and the initial available power of the battery, the ratio is initial as battery real surplus electricity and the battery Second electricity ratio value of electricity；

When the internal resistance ratio is less than zero, according to first internal resistance value and second internal resistance value, amendment described first is opened Road voltage value；Revised first open-circuit voltage is inquired from the preset electricity ratio value and open-circuit voltage relation table It is worth corresponding 4th electricity ratio value；Calculate the difference of the 4th electricity ratio value and the first electricity ratio value with it is described The product of battery initial quantity of electricity obtains the amendment electricity factor；The first electricity ratio is adjusted using the amendment electricity factor Value 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, which is characterized in that described using current time described in the internal resistance ratio calculation Battery can not electricity consumption, comprising:

Determine the minimum operating voltage value operated normally；

The corresponding third electricity of the second open-circuit voltage values is inquired from the preset electricity ratio value and open-circuit voltage relation table Ratio value；

The corresponding third of the third electricity ratio value is inquired from the preset electricity ratio value and internal resistance of cell relation table Internal resistance value；

Calculate the product and the minimum work between the third internal resistance value, the internal resistance ratio and the output electric current three Make voltage value and value；

Wherein, second open-circuit voltage values are found from the preset electricity ratio value and open-circuit voltage relation table The smallest open-circuit voltage values are differed with described and value；

3. the method as described in claim 1, which is characterized in that described according to first internal resistance value and second internal resistance Value corrects first open-circuit voltage values, comprising:

The difference of second internal resistance value and first internal resistance value and the product of the output electric current are calculated, open-circuit voltage is obtained Modifying factor；

First open-circuit voltage values are subtracted into the open-circuit voltage modifying factor, obtain revised first open-circuit voltage values.

4. a kind of terminal characterized by comprising

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 inquiring that the acquiring unit obtains from preset electricity ratio value and open-circuit voltage relation table Corresponding first open-circuit voltage values of one electricity ratio value；

Computing unit, first of output voltage, output electric current and query unit inquiry for being measured according to current time First internal resistance value of open-circuit voltage values calculating current time battery；

The query unit is also used to inquire the acquiring unit from preset electricity ratio value and internal resistance of cell relation table and obtain Corresponding second internal resistance value of the first electricity ratio value taken；

Amending unit, the internal resistance ratio for being calculated according to the computing unit correct the first electricity ratio value, obtain electricity Second electricity ratio value of pond real surplus electricity and the battery initial quantity of electricity；

Wherein, the amending unit includes:

First computation subunit is used for when the internal resistance ratio is greater than or equal to zero, using described in the internal resistance ratio calculation The battery at current time can not electricity consumption；

First obtains subelement, for subtracting the battery of the first computation subunit calculating from the battery dump energy not Available power obtains remaining battery available power；

Second obtains subelement, for subtracting the battery of the first computation subunit calculating from the battery initial quantity of electricity not Available power obtains the initial available power of battery；

Second computation subunit obtains the remaining battery available power and described second that subelement obtains for calculating described first The ratio for obtaining the initial available power of battery that subelement obtains, using the ratio as battery real surplus electricity and the electricity Second electricity ratio value of pond initial quantity of electricity；

Alternatively, the amending unit includes:

Voltage revise subelemen is used for when the internal resistance ratio is less than zero, according in first internal resistance value and described second Resistance value corrects first open-circuit voltage values；

Subelement is inquired, for inquiring described revised the from the preset electricity ratio value and open-circuit voltage relation table The corresponding 4th electricity ratio value of one open-circuit voltage values；

Third obtains subelement, for calculating the 4th electricity ratio value and first electricity ratio that the inquiry subelement is inquired The difference of example value and the product of the battery initial quantity of electricity, obtain the amendment electricity factor；

4th obtains subelement, adjusts first electricity for obtaining the amendment electricity factor that subelement obtains using the third Ratio value is measured, the second electricity ratio value of battery real surplus electricity and the battery initial quantity of electricity is obtained.

5. terminal as claimed in claim 4, which is characterized in that first computation subunit includes:

Enquiry module, for inquiring the second open-circuit voltage values pair from the preset electricity ratio value and open-circuit voltage relation table The third electricity ratio value answered；

The enquiry module is also used to inquire the third electricity from the preset electricity ratio value and internal resistance of cell relation table Measure the corresponding third internal resistance value of ratio value；

First computing module, for calculating between the third internal resistance value, the internal resistance ratio and the output electric current three Product and the minimum operating voltage value and value；

Second determining module determines that the battery at the current time can not for calculate according to first computing module and value Electricity consumption.

6. terminal as claimed in claim 4, which is characterized in that the voltage revise subelemen includes:

Second computing module, for calculate second internal resistance value and first internal resistance value difference and the output electric current Product obtains open-circuit voltage modifying factor；

Module is obtained, for first open-circuit voltage values to be subtracted the open-circuit voltage modifying factor that second computing module obtains Son obtains revised first open-circuit voltage values.

7. a kind of computer storage medium, which is characterized in that

The computer storage medium is stored with program, and described program includes as described in any one of claims 1 to 3 when executing Method.

8. a kind of terminal characterized by comprising processor, memory, communication bus and battery；

Wherein, the memory is used to store program,

9. terminal as claimed in claim 8, which is characterized in that the processor utilizes current described in the internal resistance ratio calculation The battery at moment can not electricity consumption when, execute following steps:

Determine the minimum operating voltage value operated normally；

10. terminal as claimed in claim 8, which is characterized in that the processor is according to first internal resistance value and described Two internal resistance values when correcting first open-circuit voltage values, execute following steps: