CN1889736A - Method for measuring mobile communication terminal battery electricity quantity - Google Patents
Method for measuring mobile communication terminal battery electricity quantity Download PDFInfo
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- CN1889736A CN1889736A CNA2006100891995A CN200610089199A CN1889736A CN 1889736 A CN1889736 A CN 1889736A CN A2006100891995 A CNA2006100891995 A CN A2006100891995A CN 200610089199 A CN200610089199 A CN 200610089199A CN 1889736 A CN1889736 A CN 1889736A
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Abstract
A method for measuring electric capacity of battery on mobile communication terminal includes selecting different chance to measure voltage of battery when mobile communication terminal is on standby state or on communication state then confirming electric capacity of battery on mobile communication terminal according to condition of measuring out voltage of battery on mobile communication terminal.
Description
Technical field
The present invention relates to a kind of method of measurement of TD-SCDMA mobile communication terminal battery electricity quantity.
Background technology
User for convenience, increasing function that the mobile communication terminal of a new generation is integrated, except traditional communication function, some data processing functions for example, are surfed the Net, handle postal matter, are taken pictures, shooting etc., also are integrated on the mobile communication terminal.Function increase the increase that certainly will cause system power consumption, so battery management becomes vital link in the mobile communication terminal product design.
For mobile communication terminal, it is most important accurately to measure battery dump energy.Mobile communication terminal in the course of the work, Continuous Tracking battery dump energy, and control battery impulse electricity process limit when battery dump energy is very low perhaps that some highly energy-consuming is used or the control shutdown.Simultaneously also can be shown to the user to battery dump energy information, thereby whether the user can charge according to the capacity prompt decision.
The battery electric quantity certainty of measurement is not high to have a lot of negative effects:
If be shown to the electric weight that user's electric weight is far smaller than battery reality, can induce user's frequent charge like this, the result who causes is the frequency of the frequency of the actual charging of user much larger than real needs charging, makes that battery is aging in advance, has reduced the useful life of battery;
When terminal is utilized the measurement result control discharge process of battery electric quantity, if measurement result is greater than the electric weight of reality, system can quit work suddenly even shut down under the situation without any sign and prompting, cause losing of communication abnormality interruption or data, use to the user and cause a lot of troubles;
When terminal is utilized the measurement result control charging process of battery electric quantity, coarse battery measurement can cause overcharging (overcharged) or owe to fill (not fully charged), overcharge and to reduce battery life, can cause increasing charge frequency, quicken cell degradation and owe to fill.
The current battery quantity measuring method mainly contains direct measuring method and Coulomb meter metering method.The theoretical foundation of direct measuring method is incidence relation or the one-to-one relationship that precognition is arranged between the battery variable surveyed and the battery electric quantity.Most widely used in practice is exactly to estimate dump energy by measuring cell voltage.Fig. 1 has provided the corresponding relation example of typical lithium ion battery voltage and electric weight.Wherein abscissa is represented the percentage of the consumption of battery electric quantity, and ordinate is a cell voltage.Can see that along with the increase of battery power consumption value, cell voltage progressively descends, reduce below the needed minimum voltage of portable terminal operate as normal up to cell voltage.Therefore, as long as measure cell voltage, for example just can utilizing, the voltage of precognition shown in Figure 1 and the corresponding relation of electric weight estimate battery electric quantity.
The advantage of voltage measurement method is that realization is fairly simple, and it only need measure the voltage of battery two inter-stages, does not need the continuous monitoring battery electric quantity, thereby can finish voltage measurement fast.The shortcoming of this method is the influence that the corresponding relation of voltage and electric weight is subjected to factors such as temperature, so will add amount of temperature compensation on the general measure result.This method also has a shortcoming to be exactly, under the situation that does not apply any load or duty ratio hour, just have the simple corresponding relation between this cell voltage and the dump energy.When heavy-current discharge, cell voltage will produce distortion because of the caused pressure drop of internal battery impedance.So in actual applications,, all can increase a compensation rate, improve the accuracy of electrical measurement measurement result if when large current load being arranged during battery measurement.
The Coulomb meter metering method to be measuring electric current and to calculate the integration of electric current, the net current of real-time tracking " flow to or flow out " battery how much, thereby the estimating battery dump energy.The method of coulomb metering can reflect the electric weight of battery more accurately, but what of the net current of coulomb measuring requirement continuous monitoring " flow to or flow out " battery, with respect to direct measuring method, the Coulomb meter metering method is implemented relatively difficulty, and cost is than higher.Simultaneously losing or the like of the self discharge of battery, battery capacity all can influence the result that the Coulomb meter metering method is measured.
Therefore, as mentioned above, the development of mobile communication terminal has proposed very high requirement to the accurate measurement of battery electric quantity.Yet the present direct method of measurement and coulomb measurement Law all exist can influence many problems that battery electric quantity is measured.Particularly, in realizing comparatively simple direct measuring method, ambient temperature and discharging current all can bring bigger influence to the measurement of battery electric quantity.
The load of mobile communication terminal battery under different operating states has tangible different with the size of electric current.Yet, when utilizing voltage measurement method to measure battery electric quantity at present, generally do not consider the residing operating state of mobile communication terminal, just the voltage of Ce Lianging is not considered the influence of the size of the load of the battery that the residing operating state of mobile communication terminal is brought and electric current for the voltage of measuring, and this has influenced the accuracy that battery electric quantity is measured in the voltage direct method of measurement to a great extent.
For example, carry out between service period at mobile communication terminal, because different business state battery discharge current varies in size and variation in time, therefore is difficult to determine the fixing measurement of carrying out cell voltage opportunity, the magnitude of voltage that measures is also very difficult to compensate with fixing offset.
As the mobile communication protocol of a new generation, the TD-SCDMA standard that is proposed by China has been admitted by International Telecommunication Association and has been become one of the world's three big main flow 3G standards.Recent years, the industrialization of TD-SCDMA system and terminal obtained significant progress, the future market will have increasing TD-SCDMA mobile communication terminal, therefore, using suitable method to measure battery electric quantity according to the work characteristics of TD-SCDMA mobile communication terminal is an important problem.
Summary of the invention
The battery measurement method that the purpose of this invention is to provide a kind of mobile communication terminal, wherein adopt different battery voltage measurement opportunitys, and obtain battery electric quantity according to the condition of the voltage that measures and this voltage of measurement at the residing different conditions of mobile communication terminal.Thereby can the high-acruracy survey battery electric quantity at the holding state of mobile communication terminal and communications status, portable terminal can utilize the electrical measurement result to control charging and discharge process then, and give the correct capacity prompt of user, prevent terminal abnormal shutdown, call drop or loss of data, and the overshoot and owe to fill battery is caused damage of avoiding charging.
According to the present invention, a kind of battery measurement method of mobile communication terminal is provided, determine battery electric quantity by measuring cell voltage, it is characterized in that, may further comprise the steps:
Battery voltage measurement step:, select to measure different opportunitys cell voltage according to residing holding state of mobile communication terminal or the state that communicates;
The battery electric quantity obtaining step: the condition during according to measurement mobile communication terminal cell voltage is determined mobile communication terminal battery electricity quantity.
Wherein, the battery electric quantity obtaining step may further include:
The cell voltage compensation process: the condition during according to measurement mobile communication terminal cell voltage comes the battery voltage value that measures is compensated;
The battery electric quantity estimating step: the battery voltage value that obtains according to compensation, voltage and electric weight by battery concern the estimating battery dump energy.
Wherein, the condition during described measurement mobile communication terminal cell voltage comprises: when measuring the mobile communication terminal cell voltage mobile communication terminal residing be holding state or communications status, the residing temperature of mobile communication terminal, and backlight whether the unlatching.
Wherein, described mobile communication terminal can be the TD-SCDMA mobile communication terminal.
In addition, in the battery voltage measurement step, when the TD-SCDMA mobile communication terminal is in holding state, is waken up paging receiving indication back at the TD-SCDMA mobile communication terminal and measures cell voltage.
In addition, in the battery voltage measurement step, when the TD-SCDMA mobile communication terminal carries out the communication of single transmit time slot, can when the approaching end of single transmit time slot, measure cell voltage.
In addition, in the battery voltage measurement step, when the TD-SCDMA mobile communication terminal carries out communication that pilosity penetrates time slot, can measure cell voltage when finishing at first transmission time slot.
In addition, in the battery voltage measurement step, when the TD-SCDMA mobile communication terminal carries out communication that continuous pilosity penetrates time slot, can be in the end transmission time slot measure cell voltage when finishing.
In addition, in the battery voltage measurement step, can repeatedly measure cell voltage, average as the battery voltage value that measures.
According to battery measurement method of the present invention, can be at the holding state of mobile communication terminal and communications status with the high-acruracy survey battery electric quantity, thereby terminal can utilize the dump energy of estimation to control battery impulse electricity process, and can give the correct capacity prompt of user, prevent terminal abnormal shutdown, call drop or loss of data, and the overshoot and owe to fill battery is caused damage of avoiding charging.
Description of drawings
Fig. 1 is the lithium battery voltage of mobile communication terminal and the relation curve of electric quantity consumption;
Fig. 2 is the structure of time slot figure of TD-SCDMA subframe;
Fig. 3 is the time slot configuration figure of TD-SCDMA mobile communication terminal typical subframe under the voice communication state;
Fig. 4 is TD-SCDMA mobile communication terminal typical subframe time slot configuration figure under the data communication state;
Fig. 5 be the TD-SCDMA mobile communication terminal under the single transmit slotted mode, the power amplifier periodic switch causes the periodically variable schematic diagram of cell voltage;
Fig. 6 is the partial enlarged drawing of a period of change among Fig. 5;
Fig. 7 is the flow chart according to mobile communication terminal battery electricity quantity method of measurement of the present invention.
Embodiment
Mobile communication terminal generally is in two states, i.e. holding state and service condition.Under holding state, the power consumption of mobile communication terminal is generally less.And the battery current of mobile communication terminal has different characteristics according to the type of service of mobile communication terminal under the service condition.For example, the TD-SCDMA mobile communication terminal is TDMA (time division multiple access) pattern, it is that unit transmits and receives data with the subframe when communicating business, allow up have a plurality of transmission time slots and receiving slot in each subframe, transmission time slot and receiving slot intermesh, and generally speaking during the mobile communication terminal transmission time slot battery current bigger.Therefore, the communication terminal of TDMA pattern when carrying out business, generally present size of current along with the alternate of transmission time slot and receiving slot the characteristics of alternate.
The present invention proposes a kind of battery power measuring method of TD-SCDMA mobile communication terminal, technical characterstic according to TD-SCDMA, under holding state and traffic state, adopt different electrical measurement modes respectively, under traffic state, select suitable battery voltage measurement to measure opportunity, and carry out the measuring voltage compensation according to the residing state of TD-SCDMA mobile communication terminal, obtain battery electric quantity from voltage measurements through overcompensation.Thereby the measurement result of battery electric quantity can reflect the electric weight situation of current battery more accurately, has prevented that communication abnormality from interrupting or the situation of loss of data, and can select charge correct opportunity, has prolonged the useful life of battery.
The TD-SCDMA system is a tdd systems, transmits and receives data on same frequency, but is to use different timeslice (being called time slot).Provided the subframe structure of TD-SCDMA as shown in Figure 2, a subframe (5 milliseconds) comprises 7 common time slots (timeslice) and 3 special time slots.Except time slot 0 (TS0) and time slot 1 (TS1) respectively being forced to property be appointed as receiving slot and the transmission time slot, other time slots can be sending time slots or receiving slot by network configuration.
According to the characteristics of TD-SCDMA mobile communication terminal and network service, the state of terminal can be divided into two kinds: holding state and traffic state.
At holding state, terminal needs periodic paging receiving indication, monitors the paging at oneself that whether has to come from network side.Agreement has stipulated that the cycle (DRX cycle) of discontinuous paging receiving indication is the longest 5.12 seconds, and minimum 0.08 second, typical DRX cycle was 2.56 seconds.That is to say that at a DRX cycle terminal only need receive the data (5 milliseconds) of a subframe, terminal neither sends data to network and does not also receive data from network At All Other Times, is in sleep state.Therefore under holding state, terminal is in low corona discharge process.According to the description of front, in the low discharging current process, cell voltage and electric weight have desirable corresponding relation.After portable terminal is waken up the paging receiving indication, measure cell voltage, can avoid situation about portable terminal being waken up like this just to measuring cell voltage.Measuring voltage can be estimated dump energy more accurately when holding state, and the magnitude of voltage that measures only need carry out temperature-compensating.
Traffic state comprises voice call pattern and high speed packet service pattern.In the voice call pattern, each subframe all has a transmission time slot and a receiving slot, and Fig. 3 provides the subframe time slot configuration of a typical voice call pattern.In the voice call pattern, because need opening the power amplifier (PA) of power consumption maximum, terminal carries out the emission of speech data, therefore be in a heavy-current discharge state.The corresponding relation that with the low discharging current is the voltage set up of prerequisite and electric weight like this is no longer suitable under call mode.
In the high speed packet service pattern, if uplink throughput is bigger, each subframe may have a plurality of transmission time slots and carry out the data transmission, and is same, also may have a plurality of receiving slots and carry out Data Receiving.Fig. 4 provides the subframe time slot configuration of two transmission time slots and a receiving slot.In the high speed packet service pattern, because need opening the power amplifier of power consumption maximum, terminal carries out the emission of speech data, therefore be in a heavy-current discharge state.The corresponding relation that with the low discharging current is the voltage set up of prerequisite and electric weight like this is no longer suitable under call mode.
As shown in Figure 5, the TD-SCDMA terminal is when carrying out the speech business conversation, and general every frame has only a transmission time slot.Because power amplifier is periodically opened at the transmission time slot of the every frame of TD-SCDMA, make the load of battery present the pulsed surge, cell voltage also descends tens to millivolts up to a hundred at transmission time slot accordingly.
Fig. 6 further illustrates power amplifier when the periodicity of the transmission time slot of the every frame of TD-SCDMA is opened, and cell voltage is curve over time.Can see that power amplifier is opened when transmission time slot begins, at this moment, the decline of cell voltage is comparatively quick, and afterwards, decrease speed is slack-off gradually, and descending when transmission time slot will finish stops substantially, reaches than stable status.
Therefore, according to the different communication service that the TD-SCDMA mobile communication terminal is carried out, the power consumption of battery has difference, and cell voltage also changes accordingly.Yet, for the measurement of cell voltage, need one than stable status as the opportunity of measuring, therefore, substantially reach when stablizing after the power amplifier that is chosen at power consumption maximum in the transmission time slot of the every frame of TD-SCDMA among the present invention is opened certain hour, carry out the measurement of cell voltage.Like this, in the time of can guaranteeing to measure cell voltage, the electric current output condition of battery is basic identical at every turn, thereby can compensate with comparatively fixing offset, guarantee to measure the cell voltage that after compensation, all obtains degree of precision at every turn, and then estimating battery electric weight more exactly.
The method of measurement of TD-SCDMA mobile communication terminal battery electricity quantity is described according to the present invention below in conjunction with embodiments of the invention.As shown in Figure 7, mobile communication terminal battery electricity quantity method of measurement according to the present invention can be divided into three key steps, that is, and and battery voltage measurement step S1, cell voltage compensation process S2 and battery electric quantity calculation procedure S3.At first, in battery voltage measurement step S1, mobile communication terminal is selected the suitable measurement of carrying out cell voltage opportunity according to the residing different conditions of mobile communication terminal; Then, in cell voltage compensation process S2, the state of mobile communication terminal during according to measuring voltage carries out temperature-compensating, BLC etc. to measuring voltage; At last, in cell voltage calculation procedure S3, mobile communication terminal is according to the voltage through overcompensation, from the relation curve counting cell dump energy of voltage and battery electric quantity.
Below, the battery voltage measurement step S1 of TD-SCDMA mobile communication terminal at first is described.In battery voltage measurement step S1, mobile communication terminal is selected the suitable measurement of carrying out cell voltage opportunity according to the residing different conditions of mobile communication terminal.
1). the measurement of cell voltage during standby
When the TD-SCDMA mobile communication terminal was in holding state, terminal only needed paging receiving periodically, and terminal all is in sleep state in the time of paging receiving not.Terminal current is smaller under holding state, and the average current consumption during standby is only several milliamperes.This moment, cell voltage slowly reduced along with the minimizing of electric weight.Therefore, according to battery power measuring method of the present invention, when TD-SCDMA mobile communication terminal during at holding state, the system processor of TD-SCDMA mobile communication terminal is after waking paging receiving up periodically, and control submodule transducer (ADC) is measured end cell voltage.And the system processor of TD-SCDMA mobile communication terminal can be averaged after taking multiple measurements as the one-shot measurement value of cell voltage.
2). the measurement of single transmit time slot cell voltage
When the TD-SCDMA mobile communication terminal is carrying out speech business when conversation, general every frame has only a transmission time slot and a receiving slot.Because power amplifier is opened at transmission time slot and is launched, therefore transmission time slot and the receiving slot along with the every frame of TD-SCDMA periodically replaces, make the load of battery present cyclic variation, also descend tens accordingly to millivolts up to a hundred, see shown in Figure 5 at the transmission time slot cell voltage.At this moment, according to top described with reference to Fig. 6, in the time that transmission time slot will finish, cell voltage trends towards stablizing, therefore be controlled at the measurement of carrying out cell voltage on certain time point that transmission time slot closes to an end accurately, can obtain measurement effect preferably.According to battery power measuring method of the present invention, when the TD-SCDMA mobile communication terminal was in the speech business talking state, the system processor of TD-SCDMA mobile communication terminal was controlled the submodule transducer carries out cell voltage on certain time point that transmission time slot closes to an end measurement accurately.The system processor of terminal can be controlled the submodule transducer and carry out one-shot measurement every several subframes or longer time, averages after taking multiple measurements as the one-shot measurement value of cell voltage.
3). pilosity is penetrated the measurement of time slot cell voltage
When the TD-SCDMA mobile communication terminal when carrying out the high speed uplink data service, can in each subframe, use a plurality of transmission time slots to carry out data and send.A plurality of transmission time slots in subframe can be continuous, also can be discontinuous.
For all discontinuous situation of each transmission time slot, similar with the situation of single transmit time slot, therefore, for simplicity, when the TD-SCDMA mobile communication terminal is carrying out the high speed uplink data service, and under all discontinuous situation of each transmission time slot, the system processor of TD-SCDMA mobile communication terminal can be controlled the submodule transducer carries out cell voltage on certain time point that first transmission time slot closes to an end measurement accurately.Equally, the system processor of terminal can be controlled the submodule transducer and carry out one-shot measurement every several subframes or longer time, averages after taking multiple measurements as the one-shot measurement value of cell voltage.
For there being the continuous situation of a plurality of transmission time slots, as shown in Figure 6, because when a transmission time slot soon finishes, cell voltage has trended towards stablizing, so the variation of cell voltage can be very not big in the continuous transmission time slot in back.Like this, for simplicity, the present invention provides two kinds of methods, just two measurement opportunitys.According to first method, when the TD-SCDMA mobile communication terminal is carrying out the high speed uplink data service, exist under the situation of continuous a plurality of transmission time slots, the system processor of TD-SCDMA mobile communication terminal can be controlled the submodule transducer accurately and when first transmission time slot of each subframe closes to an end cell voltage be measured.According to second method, the perhaps another kind of method of measuring according to battery electric quantity of the present invention, under the situation of continuous a plurality of transmission time slots, when the TD-SCDMA mobile communication terminal is carrying out the high speed uplink data service, exist under the situation of continuous a plurality of transmission time slots, the system processor of TD-SCDMA mobile communication terminal can be controlled the submodule transducer accurately and on certain time point that last transmission time slot of each subframe closes to an end cell voltage be measured.Equally, the system processor of terminal can be controlled the submodule transducer and carry out one-shot measurement every several subframes or longer time, averages after taking multiple measurements as the one-shot measurement value of cell voltage.
After the cell voltage that aforesaid voltage measurement step S1 obtains measuring,, therefore, need in the voltage compensation step S2 that follows, compensate the cell voltage that measures because cell voltage is subjected to the influence of various factors.
Following factor is mainly considered in the compensation of cell voltage: temperature, whether open backlight with whether communicate by letter.Therefore, according to battery power measuring method of the present invention, the system processor of TD-SCDMA mobile communication terminal can carry out the compensation of cell voltage according to following formula in voltage compensation step S2 after obtaining the battery voltage measurement value:
Batteryvoltage_EST=Batteryvoltage_MEAS+BacklightCompensa tion+DischargeLevelCompensator formula (1)
Wherein, Batteryvoltage_EST is the value after the cell voltage compensation, and Batteryvoltage_MEAS is the cell voltage actual measured value.
BacklightCompensation is the backlight open offset.In the method for the present invention, the system processor of TD-SCDMA mobile communication terminal need be judged backlight whether the unlatching simultaneously when measuring cell voltage.As cell voltage is to measure when the backlight open, then carries out BLC,, the value of BacklightCompensation is set at fixing offset that is.As cell voltage is to measure when backlight the closing, and does not then carry out BLC,, the value of BacklightCompensation is set at 0 that is.The fixing offset of BacklightCompensation can be calibrated according to the concrete back lighting device that uses when terminal is dispatched from the factory, and is stored in afterwards in the mobile communication terminal for using.For example, the representative value of BacklightCompensation is 7500 μ V.
DischargeLevelCompensator is a cell voltage with respect to temperature and the offset that whether communicates.When measuring cell voltage, the auxiliary ADC of system processor control of TD-SCDMA mobile communication terminal measures the current environmental temperature value by thermistor, parameter as the battery electric quantity estimation, and the residing state of record terminal, when utilizing formula (1) to carry out the compensation of cell voltage, from the form of for example table 1, find corresponding offset.This value also can be proofreaied and correct according to the concrete battery that uses when terminal is dispatched from the factory, and stores with the form of the form shown in for example following table 1.
| Temperature range | Mobile phone is in the IDLE pattern | Mobile phone is at communication pattern |
| DischargelevelCompensator[0]＝＞Temp＜-10℃ | 34mV | 126mV |
| DischargelevelCompensator[1]＝＞-10℃＜Temp＜-5℃ | 23mV | 122mV |
| DischargelevelCompensator[2]＝＞-5℃＜Temp＜0℃ | 15mV | 92mV |
| DischargelevelCompensator[3]＝＞0℃＜Temp＜5℃ | 7mV | 73mV |
| DischargelevelCompensator[4]＝＞5℃＜Temp＜10℃ | 4mV | 61mV |
| DischargelevelCompensator[5]＝＞10℃＜Temp＜15℃ | 4mV | 50mV |
| DischargelevelCompensator[6]＝＞15℃＜Temp＜20℃ | 0mV | 42mV |
| DischargelevelCompensator[7]＝＞20℃＜Temp＜25℃ | 0mV | 34mV |
| DischargelevelCompensator[8]＝＞25℃＜Temp＜30℃ | -4mV | 27mV |
| DischargelevelCompensator[9]＝＞30℃＜Temp | -4mV | 23mV |
Table 1
Obtain according to voltage compensation step S2 just can then carry out dump energy calculation procedure S3 after the cell voltage Batteryvoltage_EST of compensation, according to this magnitude of voltage Batteryvoltage_EST estimating battery electric weight.Common way is that the form that the relation with cell voltage and dump energy is converted into form stores, by tabling look-up, the Batteryvoltage_EST that mobile communication terminal just can obtain according to the system processor of TD-SCDMA mobile communication terminal obtains the estimated value of corresponding battery dump energy.
For example, in the general mobile communication terminal, battery electric quantity is divided into several grades, 5 grades (0 grade, 1 grade, 2 grades, 3 grades, 4 grades) for example, following table 2 is cell voltage and other corresponding relations of electric weight level of an example.
| DischargeLevelx | Representative value | Unit | Describe |
| DischargeLevel3 | 3903 | mV | Battery electric quantity is from 4 grades to 3 grades switching value |
| DischargeLevel2 | 3773 | mV | Battery electric quantity is from 3 grades to 2 grades switching value |
| DischargeLevel1 | 3712 | mV | Battery electric quantity is from 2 grades to 1 grade switching value |
| DischargeLevel0 | 3460 | mV | Battery electric quantity is from 1 grade to 0 grade switching value |
Table 2
In this example, can according to measure and compensation after the cell voltage Batteryvoltage_EST that obtains and top 4 switching values compare to determine the grade of battery electric quantity, for example, cell voltage Batteryvoltage_EST after the compensation judges that battery electric quantity is in 4 grades during greater than DischargeLevel3; Cell voltage Batteryvoltage_EST after the compensation is during less than DischargeLevel3 and greater than DischargeLevel2, judge that battery electric quantity is in 3 grades, by that analogy, when judging that battery electric quantity drops to 0 grade, system processor should carry out low capacity prompt.
Perhaps, the cell voltage Batteryvoltage_EST of compensation is applicable to that shutdown judges, when this value drops to predetermined shutdown thresholding when following, shutdown automatically.
More than measure (step S1) to be under the different conditions the different electrical measurement mode of employing at mobile communication terminal, and compensate (step S2), and according to the battery power measuring method of understanding TD-SCDMA mobile communication terminal of the present invention the mode of determining battery electric quantity (step S3) through the measuring voltage of overcompensation according to measuring condition.Yet, be to be understood that for those skilled in the art, cell voltage with battery electric quantity and measurement, measuring condition (comprises communications status or holding state, measure temperature, whether open backlight etc.) relation be made into a form stores, directly search this form according to the cell voltage of measuring among the step S1 for example and measuring condition and determine that battery electric quantity (that is, with step S2 and S3 altogether) also is a kind of feasible mode.
In the battery power measuring method of TD-SCDMA mobile communication terminal of the present invention, adopt different battery voltage measurement modes at the residing different conditions of mobile communication terminal, and the condition according to the voltage that measures and this voltage of measurement (comprises communications status or holding state, measure temperature, whether open backlight etc.) obtain battery electric quantity, thereby the measurement result of battery electric quantity can reflect the electric weight situation of current battery more accurately, prevented that communication abnormality from interrupting or the situation of loss of data, and can select charge correct opportunity, prolonged the useful life of battery.
Claims (9)
1. the battery measurement method of a mobile communication terminal is determined battery electric quantity by measuring cell voltage, it is characterized in that, may further comprise the steps:
Battery voltage measurement step:, select to measure different opportunitys cell voltage according to residing holding state of mobile communication terminal or the state that communicates;
The battery electric quantity obtaining step: the condition during according to measurement mobile communication terminal cell voltage is determined mobile communication terminal battery electricity quantity.
2. method according to claim 1 is characterized in that, the battery electric quantity obtaining step further comprises:
The cell voltage compensation process: the condition during according to measurement mobile communication terminal cell voltage comes the battery voltage value that measures is compensated;
The battery electric quantity estimating step: the battery voltage value according to compensation obtains concerns to come the estimating battery dump energy by known cell voltage and electric weight.
3. method according to claim 1 and 2, it is characterized in that, in the cell voltage compensation process, condition during described measurement mobile communication terminal cell voltage comprises: the residing state of mobile communication terminal when measuring the mobile communication terminal cell voltage, the residing temperature of mobile communication terminal, and backlight whether the unlatching.
4. method according to claim 3 is characterized in that, described mobile communication terminal is the TD-SCDMA mobile communication terminal.
5. method according to claim 4 is characterized in that, in the battery voltage measurement step, when the TD-SCDMA mobile communication terminal is in holding state, is waken up paging receiving indication back at the TD-SCDMA mobile communication terminal and measures cell voltage.
6. method according to claim 4 is characterized in that, in the battery voltage measurement step, when the TD-SCDMA mobile communication terminal carries out the communication of single transmit time slot, measures cell voltage when the approaching end of single transmit time slot.
7. method according to claim 4 is characterized in that, in the battery voltage measurement step, when the TD-SCDMA mobile communication terminal carries out communication that pilosity penetrates time slot, measures cell voltage when finishing at first transmission time slot.
8. method according to claim 4 is characterized in that, in the battery voltage measurement step, when the TD-SCDMA mobile communication terminal carried out communication that continuous pilosity penetrates time slot, in the end transmission time slot was measured cell voltage when finishing.
9. method according to claim 1 is characterized in that, in the battery voltage measurement step, repeatedly measures cell voltage, averages as the battery voltage value that measures.
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| CN101498767B (en) * | 2008-01-31 | 2011-06-22 | 鸿富锦精密工业（深圳）有限公司 | Wireless communication terminal and its battery power measuring method |
| CN102346214A (en) * | 2011-08-18 | 2012-02-08 | 华为终端有限公司 | Method and device for monitoring abnormal power consumption of terminal equipment |
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