CN101206246A - Method for preestimating battery residual capacity - Google Patents
Method for preestimating battery residual capacity Download PDFInfo
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- CN101206246A CN101206246A CNA2006101701023A CN200610170102A CN101206246A CN 101206246 A CN101206246 A CN 101206246A CN A2006101701023 A CNA2006101701023 A CN A2006101701023A CN 200610170102 A CN200610170102 A CN 200610170102A CN 101206246 A CN101206246 A CN 101206246A
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Abstract
A method for preestimating battery residual capacity includes the following steps that: (a) battery initial capacity value is determined; (b) the second voltage value of the battery is measured; (c) according to the second voltage as well as the maximum possible current value and the minimum possible current value of the battery and battery internal resistance value provided by a power source management program, the maximum possible voltage value and the minimum possible voltage value of the battery are calculated; (a) according to the maximum possible voltage value and the minimum possible voltage value of the battery as well as the relation table of voltage and residual capacity, the maximum possible residual capacity value and the minimum possible residual capacity value of the battery are calculated; (e) the maximum possible current value and the minimum possible current value of the battery are compared; (f) according to the comparative result obtained by the step (e) as well as the maximum possible residual capacity value and the minimum possible residual capacity value of the battery, the residual capacity of the battery is calculated.
Description
Technical field
The invention provides a kind of method of preestimating battery residual capacity.Particularly, refer to a kind of under the situation that does not increase additional hardware, with the advantage of software mode comprehensive state correction voltage method and current integration method, to reach the method for preestimating battery residual capacity more exactly.
Background technology
In the modern society, many electronic products can both provide work required energy with the electric energy that stores in the battery, allow the user can break away from the constraint and the restriction of power lead.Yet the electric weight of battery storage can be along with electronic product work consumes gradually, up to degree that can't the regular supply electric energy, therefore need it be charged by extraneous power supply, just can make battery that the energy that provides electronic product work required is provided.At present, handheld apparatus (as mobile phone etc.) all uses rechargeable battery as power supply, for the user, it is a considerable reference index that battery remaining power shows, device itself also can preestimating battery residual capacity simultaneously, use for urgent with reserve part electric power, for example one minute urgency traffic etc.Yet, low if battery remaining power was estimated, not only may allow the user feel to increase the frequency of using charger by mobile phone power consumption height, also can cause battery shortening in serviceable life indirectly.Otherwise, too high if battery remaining power is estimated, then may influence the normal use of emergency function, or allow the user usually run into the predicament of power shortage.Therefore, if preestimating battery residual capacity exactly, just effectively the maintenance customer to the good impression of product.
Can comprise following several mode substantially and estimate mode about battery remaining power in the technology of knowing:
Intelligent electric pool technology (current integration method): internal battery managing chip in battery (as Fuelgauge etc.), this battery management chip can be monitored battery current output input status at any time, calculating battery remaining power, and cell phone software can directly read the data in the chip.Its advantage is that the calculating little, battery remaining power changing condition in specific usage behavior of software burden is accurate, but shortcoming then is a hardware cost to be increased, chip can additive decrementation electric power (even mobile phone is in off-mode), new battery need after enabling through one section learning time accuracy can promote, accuracy is subjected to user's use habit to influence (if battery usually uses up just charging, chip calculates and has suitable error).And that whether the hardware cost of chip can be reflected on the price is also disputable.In addition, this current integration method is if replace chip with software, wants the accuracy that reaches same, also has any problem in the realization.
Internal resistance of cell method: make battery remaining power and internal resistance of cell relation table, mobile phone reads the internal resistance of cell at set intervals, and interpolation method is determined battery remaining power to table look-up.Yet mobile phone generally uses lithium ion battery, and its internal resistance of cell is minimum with the variation of battery remaining power, and therefore the battery remaining power of being estimated out has suitable error.
Voltage method: make battery remaining power and voltage relationship table in advance, mobile phone reads cell voltage at set intervals, and interpolation method is determined battery remaining power to table look-up.Its advantage is simple, but shortcoming then is a cell voltage also can be subjected to mobile phone at that time the power consumption state influence, influence accuracy, the degree of accuracy of battery remaining power and voltage relationship table also has very big influence to estimating of battery remaining power in addition.
Electric current correction voltage method: when reading cell voltage, also read battery current, and, determine battery remaining power with the interpolation method of tabling look-up again according to size of current correction voltage.Advantage be accuracy than the voltage method height, read and often also need additional hardware but shortcoming then is a battery current, thereby increase cost.
State correction voltage method: different with electric current correction voltage method is that this method does not directly read battery current, but utilizes application state to determine size of current.Advantage be accuracy than the voltage method height, do not need to increase extra cost, but shortcoming then is to utilize the application state actual current that might not know for sure merely, power consumption changes big element in time and can increase error range in the calculating in the mobile phone.
In sum, at present the mode of preestimating battery residual capacity still respectively has its a fly in the ointment, and the method for preestimating battery residual capacity exactly therefore how found out under the prerequisite that does not increase additional hardware still just becomes the problem of current required effort.
Summary of the invention
The invention provides a kind of method of preestimating battery residual capacity, to solve the above problems.
An aspect of of the present present invention is the method that discloses a kind of residual capacity of preestimating battery, may further comprise the steps: (a) determine battery initial capacity value; (b) measure second magnitude of voltage of this battery; (c) according to described second magnitude of voltage that measures, and by battery maximum possible current value, battery that power management routines provided minimum may current value and internal resistance of cell value calculate battery maximum possible magnitude of voltage and the minimum possibility of battery magnitude of voltage; (d) according to described battery maximum possible magnitude of voltage and described battery minimum may magnitude of voltage and voltage calculate battery maximum possible residual capacity value and the possible residual capacity value of battery minimum with the residual capacity relation table; (e) the minimum possibility of more described battery maximum possible current value and described battery current value; And (f) according to the comparative result of step (e) and described battery maximum possible residual capacity value, battery is minimum may the residual capacity value calculate battery remaining power.
Another aspect of the present invention is to disclose a kind of electronic installation of implementing said method.
Description of drawings
Fig. 1 is the functional block diagram of electronic installation of the present invention; And
Fig. 2, Fig. 3 and Fig. 4 are respectively the process flow diagram that the present invention utilizes the residual capacity of battery management program (Battery manager) and power management routines (Power manager) preestimating battery.
Embodiment
Consult Fig. 1, Fig. 1 is the functional block diagram of electronic installation 10 of the present invention, and electronic installation 10 can be a wireless mobile communication devices, mobile phone etc. for example, and electronic installation 10 comprises: battery 12 is used to provide the electric power of electronic installation 10; Memory module 14 is used for storage battery supervisory routine 16 and power management routines 18; Display module 20 is used for showing the relevant information of the residual capacity of battery 12; And control module 22, be used for controlling the operation of electronic installation 10.
Consult Fig. 2, Fig. 3, Fig. 4, Fig. 2, Fig. 3 and Fig. 4 are respectively the process flow diagram that the present invention utilizes the residual capacity of battery management program 16 and power management routines 18 preestimating batteries 12, Fig. 2, Fig. 3 are mainly the performed flow process of battery management program 16, Fig. 4 is mainly the performed flow process of power management routines 18, wherein battery management program 16 is responsible for the state of monitoring battery 12 residual capacities, and power management routines 18 is the power down mode of responsible system then.The flow process of Fig. 2 and Fig. 3 is described below:
Step 1000: electronic installation 10 is carried out boot action.
Step 1010: first magnitude of voltage of measuring battery 12.
Step 1011: first temperature value of measuring battery 12.
Step 1020: described first magnitude of voltage, voltage and residual capacity relation table, temperature and capacity effective number percent relation table and step 1011 measured described first temperature value measured according to step 1010, calculate the battery initial capacity value of battery 12, and be made as the battery remaining power of battery 12.
Step 1021: stablizing low current condition and stablizing the voltage of measuring battery 12 under the high current status respectively.
Step 1022: the internal resistance of cell value of calculating and upgrade battery 12 according to the measurement result of step 1021.
Step 1100: set a special time.
Step 1200: judge whether electronic installation 10 charges, if execution in step 1800 then; Execution in step 1300 then if not.
Step 1300: judge whether to reach this special time that step 1100 sets, if execution in step 1400 then; Rebound step 1200 then if not.
Step 1400: second magnitude of voltage of measuring battery 12.
Step 1401: second temperature value of measuring battery 12.
Step 1410: described second magnitude of voltage measured according to step 1400, the minimum possibility of battery maximum possible current value that power management routines 18 is provided and battery current value, and described internal resistance of cell value, calculate the minimum possibility of battery maximum possible magnitude of voltage and battery magnitude of voltage, and according to described battery maximum possible magnitude of voltage and the minimum possibility of described battery magnitude of voltage, described second temperature value that step 1401 is measured, and described voltage and residual capacity relation table, the effective number percent relation table of described temperature and capacity calculates battery maximum possible residual capacity value and the minimum possibility of battery residual capacity value.
Step 1420: whether judge the minimum difference that may current value of described battery maximum possible current value and described battery less than a particular value, if execution in step 1421 then; Execution in step 1510 then if not.
Step 1421: whether the voltage of judging battery 12 is stable, if execution in step 1500 then; Execution in step 1510 then if not.
Step 1500:, calculate the battery remaining power of battery 12 according to described battery maximum possible residual capacity value, described battery minimum possibility residual capacity value and battery remaining power reference value.
Step 1501: whether the described battery remaining power that determining step 1500 is calculated less than the previous described battery remaining power reference value that writes down, if execution in step 1502 then; Execution in step 1510 then if not.
Step 1502: according to described each element state of battery remaining power correction and maximum, the minimum power consumption flow relation table of described battery remaining power reference value and this battery.
Step 1503: upgrade the described battery remaining power that described battery remaining power reference value is a battery 12.
Step 1510: according to described battery maximum possible residual capacity value and described battery minimum may the residual capacity value, power management routines 18 the battery max cap. changing value and battery minimum capacity changing value and the described battery initial capacity value (or last described battery remaining power that is calculated) that are provided, calculate the described battery remaining power of battery 12.
Step 1600: the relevant information of the described battery remaining power of control module 22 control display modules 20 update displayed batteries 12.
Step 1700: whether the described battery remaining power of judging battery 12 less than the electric weight of a corresponding air time, if execution in step 3000 then; Execution in step 1100 then if not.
Step 1800: electronic installation 10 is carried out charging process.
Step 1900: judge whether charging process is finished, if execution in step 1901 then; Then continue execution in step 1800 if not.
Step 1901: the cell degradation coefficient that upgrades battery 12 according to the charge condition of battery 12.
Step 3000: electronic installation 10 is carried out the shutdown action.
The flow process of Fig. 4 is described below:
Step 1000: electronic installation 10 is carried out boot action.
Step 2100: carry out the initiation parameter action.
Step 2200: whether the system state of judging electronic installation 10 changes (for example the unlatching of each element or close etc.), if execution in step 2300 then; Then re-execute step 2200 if not.
Step 2300: obtain system time.
Step 2310: may generate described battery max cap. changing value and described battery minimum capacity changing value respectively with the system state change time by current value according to described battery maximum possible current value, described battery are minimum.
Step 2320: upgrade described system state and change the time.
Step 2330: upgrade described system state.
Step 2340: new system state, described each element state of upgrading according to step 2330 calculate the possible range of current (described battery maximum possible current value, the minimum possibility of described battery current value) that makes new advances with maximum, minimum power consumption flow relation table.
Step 2341: according to described battery maximum possible current value that step 2340 calculated and described battery are minimum may current value and previous described battery maximum possible current value and the minimum possibility of described battery current value, and electric current variation and time and change in voltage relation table calculate electric current variation time parameter.
Step 2350: upgrading according to the result that step 2340 calculated may range of current (described battery maximum possible current value, the minimum possibility of described battery current value).
Step 2400: judge whether electronic installation 10 can enter battery saving mode, if execution in step 2500 then; Execution in step 2200 then if not.
Step 2500: electronic installation 10 enters battery saving mode.
Step 2600: judge whether electronic installation 10 has system event pending, if execution in step 2200 then; Execution in step 2500 then if not.
At this above-mentioned steps is elaborated, when electronic installation 10 start just, because start process is fixed, Deng hardware stable after, power consumption does not have too big variation usually, add that battery leaves standstill a period of time usually, therefore comparatively stable, because battery capacity and voltage and temperature have sizable relation, for example battery capacity is lower when temperature is low, but between mobile phone operating temperature range 70 to-10 degree, battery temperature calculates for battery capacity considerable influence, therefore can increase battery temperature and measure, be used for each step of back.Thereby this moment can measure described first magnitude of voltage and described first temperature value of battery 12 earlier, cooperate described voltage and residual capacity relation table and described temperature and the effective number percent relation table of capacity that belongs to preset parameter again, conversion obtains more described battery initial capacity value, and described battery initial capacity value will be as the basis of subsequent calculations.Can stablize low current condition and stablize the voltage of measuring battery 12 under the high current status respectively afterwards, for example when electronic installation 10 standbies, can reach this two states, perhaps do when being connected with a certain power and base station, can reach the described high current status etc. of stablizing when electronic installation 10 (as mobile phone).Because the battery that general mobile phone uses is a lithium ion battery, its internal resistance of cell is difficult for changing with battery remaining power, thereby make internal resistance of cell method can't be used for estimating of battery of mobile phone residual capacity, but battery itself still has individual difference with system connector (connector), therefore in the short time at the stable cell voltage that high and low current situation measured respectively, can calculate the internal resistance of cell value of reality and upgraded.Its account form is as follows:
Described internal resistance of cell value=((at the described voltage of stablizing the measured battery of high current status 12)-(at the voltage of the measured battery 12 of described stable low current condition))/((at the described electric current of stablizing the measured battery of high current status 12)-(at the electric current of the measured battery 12 of described stable low current condition))
Afterwards, can set the residual capacity data of upgrading battery 12 every described special time (as a minute etc.), next just judge whether electronic installation 10 charges, if then do not carry out earlier the flow process that follow-up battery remaining power is estimated, electronic installation 10 is carried out charging processes at this moment, (for example electric weight is full of after finishing charging process, charger is pulled out, or generation charging mistake etc.), can upgrade the described cell degradation coefficient of battery 12 according to the charge condition of battery 12, but this cell degradation coefficient system belongs to corrected parameter, battery capacity can reduce gradually along with discharging and recharging number of times, so after each charging is finished, renewable this cell degradation coefficient.If judge that electronic installation 10 is not when charging and judge that system time (can be obtained by step 2300 or 2320) has reached the described special time that step 1100 sets, can carry out the flow process that follow-up battery remaining power is estimated, if during the described special time that system time does not reach as yet that step 1100 sets, then continue to wait for and carry out the flow process that follow-up battery remaining power is estimated again until reaching this special time.
Then, can measure described second magnitude of voltage and described second temperature value of battery 12 again, and according to measured described second magnitude of voltage of step 1400, described battery maximum possible current value that power management routines 18 is provided and described battery are minimum may current value (step 2340,2350), and the described internal resistance of cell value upgraded of step 1022, calculate the minimum possibility of described battery maximum possible magnitude of voltage and described battery magnitude of voltage, its account form is as follows:
Described battery maximum possible magnitude of voltage=(described second magnitude of voltage)+(described battery maximum possible current value) * (described internal resistance of cell value);
Described battery is minimum may magnitude of voltage=(described second magnitude of voltage)+(the minimum possibility of described battery current value) * (described internal resistance of cell value)
Then, can according to described battery maximum possible magnitude of voltage and described battery minimum may magnitude of voltage, measured described second temperature value of step 1401, and described voltage is tabled look-up with the effective number percent relation table of residual capacity relation table, described temperature and capacity and is drawn described battery maximum possible residual capacity value and the possible residual capacity value of described battery minimum.
Next, need to judge the electric current changing condition of battery 12, when the electric current of battery 12 changes greatly, representative system state grasp degree is lower, meaning is that the relevant uncertain factor of battery remaining power is more, therefore the fiduciary level of the current value that is drawn is lower, thereby needs more parameter to assist preestimating battery residual capacity (utilizing step 1510); Otherwise, when the electric current of battery 12 changes hour, then representative system state grasp degree is higher, meaning is that the relevant uncertain factor of battery remaining power is less, therefore the fiduciary level of the current value that is drawn is higher, then do not need the volume change of reference power source supervisory routine 18 to estimate, and can directly use the result of calculation of step 1410 to carry out estimating of battery remaining power.When the difference of judging described battery maximum possible current value and the minimum possible current value of described battery during less than described particular value, meaning is that the electric current of battery 12 changes little, then continue to judge whether the voltage of battery 12 is stable this moment, as for the voltage of judging battery 12 whether stable manner can for: the electric current that is provided according to power management routines 18 changes the comparative result of time parameter and system's present time (can be obtained by step 2300 or 2320), whether the voltage of judging battery 12 is stable, wherein said electric current changes time parameter can be according to described battery maximum possible current value and the minimum possibility of the described battery current value by step 2340 calculated, the minimum possibility of previous described battery maximum possible current value and described battery current value, and electric current variation and time and change in voltage relation table (belonging to preset parameter) calculate, that is to say, according to by described battery maximum possible current value that step 2340 calculated and described battery minimum may current value and the difference of previous described battery maximum possible current value and the minimum possible current value of described battery described electric current variation and time and change in voltage relation table are tabled look-up, can find cell voltage and reach and stablize the required time, Here it is, and described electric current changes time parameter (step 2341).If electric current moment from large to small, and maintain little electric current output state, though cell voltage can rise immediately, but may still need a period of time just can progressively rise to a stationary value (chemical cell reaction needed time), just can change time parameter by step 2341, promptly represent cell voltage to stablize the required time in the hope of described electric current.And in step 1421, change the comparison of time parameter according to system's present time and described electric current, just can avoid the described battery remaining power reference value of renewal before cell voltage is stable as yet and make discreet value on the low side.
When the voltage of judging battery 12 has reached when stablize, meaning is a described system present time when having met described electric current variation time parameter, then can carry out the estimation of the described battery remaining power of step 1500; Otherwise,, still need more parameter to assist preestimating battery residual capacity (utilizing step 1510) when the voltage of judging battery 12 does not reach when stablizing.In step 1500 can according to resulting described battery in the step 1410 may the greatest residual capacity value, described battery may the least residue capability value and parameters such as described battery remaining power reference value (also can how with reference to other parameter), calculate described battery remaining power, wherein said battery remaining power reference value can equal described battery initial capacity value, or be set to a bigger reference value in advance, the computing method of described battery remaining power have many kinds, only are exemplified below at this:
Described battery remaining power=(described battery possibility greatest residual capacity value+described battery possibility least residue capability value)/2; Or
Described battery remaining power=((min (described battery possibility greatest residual capacity value, described battery remaining power reference value))+(min (described battery possibility least residue capability value, described battery remaining power reference value)))/2
Next, just need described battery remaining power that determining step 1500 calculated whether less than the previous described battery remaining power reference value that writes down, if, the described battery remaining power fiduciary level of then representing step 1500 and being calculated is higher, just can upgrade the described battery remaining power that described battery remaining power reference value is a battery 12 this moment; Otherwise, if not, the described battery remaining power fiduciary level of then representing step 1500 and being calculated is lower, therefore still needs more parameter to assist preestimating battery residual capacity (utilizing step 1510).That is to say, under no charge condition, battery remaining power can not go up, but when system is in the minimum state of power consumption for a long time, the discreet value error that measuring error such as cell voltage, electric current is caused, may change greater than real battery remaining power on the contrary, compare with the described battery remaining power reference value of previous record, can reduce the influence that measuring error causes by the described battery remaining power that step 1500 calculated.
As for step 1502, but because the data in preset parameter and the corrected parameter, great majority are by experiment, the real system error that therefore must have experimental error or produce because of element difference, though via step 1410,1420, the processing of processes such as 1510, but the influence that error caused in the positive preset parameter of machine maintenance and the corrected parameter in due course, if but do not correct error in the parameter, if system is in high power consumption for a long time, electric current changes operating conditions (for example listening MP3 continuously more than a few hours with max volume) greatly, and the predictor error of battery remaining power still may have the phenomenon that continues accumulation.If add the process of step 1502, just can be according to the gap of described battery remaining power value and described battery remaining power reference value, but corrected parameter is done suitable correction (for example described each element state and maximum, minimum power consumption flow relation table).
As for step 1510, adopted more parameter to assist preestimating battery residual capacity, just according to described battery maximum possible residual capacity value and described battery minimum may the residual capacity value, the power management routines 18 described battery max cap. changing value and described battery minimum capacity changing value and the described battery initial capacity value (or last described battery remaining power that is calculated) that are provided, in the hope of obtaining described more accurately battery remaining power (also can how with reference to other parameter).Wherein the described battery max cap. changing value and the described battery minimum capacity changing value that are provided of power management routines 18 can be drawn by step 2310, be according to described battery maximum possible current value in step 2310, described battery minimum possibility current value and described system state change time generate described battery max cap. changing value and described battery minimum capacity changing value respectively, and the described system state change time is drawn by step 2320, just this time deduct last by the obtained system time of step 2300 by the obtained system time of step 2300, can utilize mode such as the current integration method according to described battery maximum possible current value afterwards, described battery minimum possibility current value and described system state change time generate described battery max cap. changing value and described battery minimum capacity changing value respectively, for example can be drawn by following manner:
This described battery max cap. described battery max cap. changing value=last time changing value+(described battery maximum possible current value) * (described system state changes the time);
This described battery minimum capacity described battery minimum capacity changing value=last time changing value+(the minimum possibility of described battery current value) * (described system state changes the time)
Computing method as for the described battery remaining power of step 1510 have many kinds, only are exemplified below at this:
The described battery initial capacity of G=value (or last described battery remaining power that is calculated)-described battery minimum capacity changing value
The described battery initial capacity of H=value (or last described battery remaining power that is calculated)-described battery max cap. changing value
J=min (described battery maximum possible residual capacity value, G)
K=max (the minimum possibility of described battery residual capacity value, H)
if(K＜J)
Described battery remaining power=(K+J)/2
else?if (K＝H)
Described battery remaining power=H
else
Described battery remaining power=G
Afterwards, control module 22 just can be controlled the relevant information of the described battery remaining power (being drawn by step 1500 or 1510) of display module 20 update displayed batteries 12, and when the described battery remaining power of judging battery 12 during less than the electric weight of described air time of correspondence (for example one minute), then electronic installation 10 can be carried out the shutdown action, to avoid influencing the normal use of emergency function; If the described battery remaining power of judging battery 12 is during greater than the electric weight of described air time of correspondence, but then represent electronic installation 10 still normal power supply use, then get back to step 1100 this moment and continue to carry out the flow process that battery remaining power is estimated.
Compare with technology in the past, the method of preestimating battery residual capacity of the present invention can be under the prerequisite that does not increase additional hardware, advantage with software mode comprehensive state correction voltage method and current integration method, estimate and reach more accurately battery remaining power, can reduce experiment or the influence that caused of individual parameters error on this external stability, therefore effectively the maintenance customer for the good impression of product.
The above only is the preferred embodiments of the present invention, and every equivalence of making according to claims of the present invention changes and modifies, and all should belong to the scope that patented claim of the present invention is contained.
Claims (22)
1. the method for the residual capacity of a preestimating battery comprises the following step:
(a) determine battery initial capacity value;
(b) measure second magnitude of voltage of this battery;
(c) calculate battery maximum possible magnitude of voltage and the minimum possibility of battery magnitude of voltage according to measured described second magnitude of voltage and by battery maximum possible current value and the minimum possibility of battery current value, internal resistance of cell value that power management routines provided;
(d) according to described battery maximum possible magnitude of voltage and described battery minimum may magnitude of voltage and voltage calculate battery maximum possible residual capacity value and the possible residual capacity value of battery minimum with the residual capacity relation table;
(e) the minimum possibility of more described battery maximum possible current value and described battery current value; And
(f) according to the comparative result of step (e) and described battery maximum possible residual capacity value, described battery are minimum may the residual capacity value, calculate battery remaining power.
2. the method for claim 1, wherein step (a) comprising:
(a1) measure first magnitude of voltage of this battery; And
(a2) calculate described battery initial capacity value according to measured described first magnitude of voltage of step (a1) and described voltage and residual capacity relation table.
3. method as claimed in claim 2, wherein, step (a1) is included in described first magnitude of voltage that described battery is measured in start afterwards.
4. method as claimed in claim 2, also comprise the temperature of measuring described battery, and step (a2) comprising: the temperature according to measured effective number percent relation table of described first magnitude of voltage, described voltage and residual capacity relation table, temperature and capacity of step (a1) and measured described battery calculates described battery initial capacity value.
5. the method for claim 1 also comprises: stablizing low current condition and stablizing the voltage of measuring this battery under the high current status respectively, and calculating and upgrade the described internal resistance of cell value of this battery according to this measurement result.
6. the method for claim 1 comprises that also the charge condition according to this battery upgrades the cell degradation coefficient of this battery.
7. the method for claim 1, wherein, at battery maximum possible magnitude of voltage described in the step (c) be: described second magnitude of voltage+described battery maximum possible current value * described internal resistance of cell value and described battery is minimum may magnitude of voltage be: described second magnitude of voltage+described battery is minimum may current value * described internal resistance of cell value.
8. be to generate with maximum, minimum power consumption flow relation table the method for claim 1, wherein according to system state and each element state at battery maximum possible current value described in the step (c) and the minimum possibility of described battery current value.
9. the method for claim 1, also comprise the temperature of measuring this battery, and step (d) comprising: according to described battery maximum possible magnitude of voltage and described battery minimum may magnitude of voltage, the temperature of described voltage and the effective number percent relation table of residual capacity relation table, temperature and capacity and measured this battery, calculate the possible residual capacity value of described battery maximum possible residual capacity value and described battery minimum.
10. the method for claim 1, wherein, step (f) comprising: when the minimum difference that may current value of described battery maximum possible current value and described battery during greater than a particular value, according to minimum battery max cap. changing value and battery minimum capacity changing value and described battery initial capacity value or the last described battery remaining power that is calculated that may residual capacity value, described power management routines be provided of described battery maximum possible residual capacity value and described battery, calculate described battery remaining power.
11. method as claimed in claim 10, wherein, described battery max cap. changing value and described battery minimum capacity changing value are to generate according to described battery maximum possible current value, described battery minimum possibility current value and system state change time respectively.
12. the method for claim 1 also comprises:
(g) whether the voltage of judging this battery is stablized;
Wherein, step (f) comprising: when the minimum difference that may current value of described battery maximum possible current value and described battery during less than a particular value, according to the judged result of step (h) and described battery maximum possible residual capacity value, described battery are minimum may the residual capacity value, calculate described battery remaining power.
13. method as claimed in claim 12, wherein, step (g) comprising: described power management routines provides electric current to change time parameter, and changes the comparative result of time parameter and system's present time according to this electric current, judges whether the voltage of this battery is stable.
14. method as claimed in claim 13 also comprises: according to described battery maximum possible current value and described battery are minimum may current value, and the electric current variation calculates described electric current variation time parameter with time and change in voltage relation table.
15. method as claimed in claim 12, wherein, step (f) comprising: when the minimum difference that may current value of described battery maximum possible current value and described battery less than a particular value, and the voltage of judging this battery is when stablizing, according to described battery maximum possible residual capacity value, described battery minimum possibility residual capacity value and battery remaining power reference value, calculate described battery remaining power.
16. method as claimed in claim 15, wherein, described battery remaining power reference value equals described battery initial capacity value.
17. method as claimed in claim 15 also comprises: the described battery remaining power of this battery that is calculated when step (f) is during less than described battery remaining power reference value, and upgrading described battery remaining power reference value is described battery remaining power.
18. method as claimed in claim 15, also comprise: the described battery remaining power that is calculated when step (f) is during greater than described battery remaining power reference value, according to minimum battery max cap. changing value and battery minimum capacity changing value and the described battery initial capacity value that may residual capacity value, described power management routines be provided of described battery maximum possible residual capacity value and described battery, calculate described battery remaining power.
19. method as claimed in claim 18, wherein, described battery max cap. changing value and described battery minimum capacity changing value are to generate according to described battery maximum possible current value, described battery minimum possibility current value and system state change time respectively.
20. method as claimed in claim 18 also comprises according to described battery remaining power reference value and described each element state of battery remaining power correction and maximum, minimum power consumption flow relation table.
21. the method for claim 1, wherein, carry out the shutdown action when described battery remaining power during less than the electric weight of a corresponding air time.
22. electronic installation of implementing the described method of claim 1.
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055847A (en) * | 2010-12-28 | 2011-05-11 | 惠州Tcl移动通信有限公司 | Mobile terminal and electrical quantity information prompting method thereof |
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| CN101782628B (en) * | 2009-01-15 | 2012-08-22 | 财团法人工业技术研究院 | Battery property tracking method and circuit |
| CN102195304A (en) * | 2010-03-12 | 2011-09-21 | 联想(北京)有限公司 | Method and device for managing service time of cell and portable computer |
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| CN102346237A (en) * | 2010-07-23 | 2012-02-08 | 本田技研工业株式会社 | Device for calculating the remaining capacity of a battery |
| CN102346237B (en) * | 2010-07-23 | 2014-06-04 | 本田技研工业株式会社 | Device for calculating the remaining capacity of a battery |
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| CN103135056A (en) * | 2011-11-25 | 2013-06-05 | 新德科技股份有限公司 | Battery capacity predicting device and battery capacity predicting method |
| CN102914745A (en) * | 2012-07-02 | 2013-02-06 | 北京工业大学 | Method for evaluating performance states of automotive power batteries |
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| CN105676141A (en) * | 2016-01-27 | 2016-06-15 | 浙江大学 | Battery capacity on-line measuring system and measuring method based on damped oscillation |
| CN105676141B (en) * | 2016-01-27 | 2018-06-19 | 浙江大学 | A kind of battery capacity on-line measurement system and its measuring method based on damped oscillation |
| CN106019162A (en) * | 2016-05-18 | 2016-10-12 | 成都雅骏新能源汽车科技股份有限公司 | Power battery energy management method and system |
| CN106357901A (en) * | 2016-09-12 | 2017-01-25 | 努比亚技术有限公司 | Call processing device and call processing method and mobile terminal |
| CN106357901B (en) * | 2016-09-12 | 2019-10-01 | 努比亚技术有限公司 | A kind of communication processing device, method and mobile terminal |
| CN106772091A (en) * | 2016-12-30 | 2017-05-31 | 广东欧珀移动通信有限公司 | The update method of battery capacity value, device and terminal |
| CN106772091B (en) * | 2016-12-30 | 2020-02-14 | Oppo广东移动通信有限公司 | Method and device for updating battery capacity value and terminal |
| CN108279382A (en) * | 2017-01-05 | 2018-07-13 | 中兴通讯股份有限公司 | Cell health state detection method and device |
| CN108279382B (en) * | 2017-01-05 | 2022-06-21 | 中兴通讯股份有限公司 | Battery health state detection method and device |
| CN107356874A (en) * | 2017-06-15 | 2017-11-17 | 宁德时代新能源科技股份有限公司 | Estimation method, device and system for state of charge of battery pack |
| CN110224422A (en) * | 2019-06-19 | 2019-09-10 | 合肥阳光新能源科技有限公司 | Method for balancing powers, Energy Management System and the coordination management system of energy-storage system |
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