CN103176132A - Estimation method and terminal device of electricity quantity of battery - Google Patents
Estimation method and terminal device of electricity quantity of battery Download PDFInfo
- Publication number
- CN103176132A CN103176132A CN2011104362671A CN201110436267A CN103176132A CN 103176132 A CN103176132 A CN 103176132A CN 2011104362671 A CN2011104362671 A CN 2011104362671A CN 201110436267 A CN201110436267 A CN 201110436267A CN 103176132 A CN103176132 A CN 103176132A
- Authority
- CN
- China
- Prior art keywords
- voltage
- cell voltage
- samples
- mapping table
- electric quantity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention relates to terminal devices and discloses an estimation method a terminal device of the electricity quantity of a battery. According to the invention, a sampling battery voltage is firstly compensated and then substituted into a corresponding relationship table of battery voltage and battery electricity quantity to obtain a corresponding battery electricity quantity for displaying, wherein the corresponding relationship table of the battery voltage and the battery electricity quantity is obtained according to a battery discharging curve graph. The voltage reduction of a high-power-consumption load, which is caused by a large discharging quantity, is compensated to enable the compensated voltage of the load to match with the voltage in a standard discharging curve, so that the problem that electricity quantity display errors are large in the voltage detection method can be avoided, and the working and stand-by time of the system can be prolonged. Besides, the estimation method of the electricity quantity of the battery is still based on the principle of the voltage detection method and does not need the current detection, so that the technical scheme can be achieved without increasing the hardware cost, namely, the hardware cost is low.
Description
Technical field
The present invention relates to terminal device, particularly the battery electric quantity estimation technique in terminal device.
Background technology
For battery powered system, maximum challenge is the working time of battery at present.Usually, electronic system design personnel are primarily focused on and improve DC (direct current)/DC power supply conversion efficiency, reduce system power dissipation and enlarge battery capacity, extend the working time of battery with this, and tend to ignore the accuracy problem with power supply conversion efficiency and battery capacity monitoring cell electricity quantity meter of equal importance.If the error range of monitoring cell electricity quantity meter is ± 10%, so just has and be equivalent to be lost 10% battery capacity or working time.Accurate electric quantity metering can make handheld device take full advantage of its battery, extends System production time and stand-by time, has improved customer satisfaction.
In some mobile phone, requiring the battery electric quantity display precision is 1%, and difference several battery compartment numbers of only demonstration in the past, this has higher requirement to battery management undoubtedly.Have on the market at present special chip accurately to show battery electric quantity, still consider the factors such as cost, most of mobile phones still use multiple power source managing chip (PMU) to manage battery, calculate battery electric quantity by the detecting voltage method.
The available power of battery has funtcional relationship to its velocity of discharge (relevant with load), working temperature, degree of aging and self-discharge characteristics.In addition, traditional monitoring cell electricity quantity meter also requires battery is fully charged and discharges to upgrade battery capacity fully, but this is rare in real world applications, thereby has caused larger measuring error.Therefore, be difficult to accurately predicting battery remaining power and working time in the cycle at battery operation.
Main solution comprises in the prior art:
(1) detecting voltage method.The theory that the detecting voltage method is followed is: in discharge process, cell voltage reduces gradually with the passage meeting of electric weight.Discharge curve as shown in Figure 1.
(2) current sense method.Carry out coulombmeter algorithm based on current integration by special circuit, thereby accurately calculate discharge electricity amount.
(3) electric current and voltage combined techniques.Calculate the full power consumption of battery with the voltage detection method under open circuit situation, current method is used for calculating discharge electricity amount, and these two kinds of methods combine can well solve problem and the demonstration of the electric weight under the different power consumption current conditions problem that the battery self-characteristic is introduced.
Consider to detect the factors such as cost and pcb board (printed-wiring board (PWB)) area, scheme (2), (3) are used less in field of mobile phones, mainly come the estimating battery electric weight with the detecting voltage method.And present detecting voltage method major defect is that the electric weight display error is larger, especially is subjected to the power consumption the influence of peak current comparatively serious.
Summary of the invention
The object of the present invention is to provide a kind of evaluation method and terminal device of battery electric quantity, make terminal device in the situation that do not increase hardware cost, higher battery electric quantity display precision can be arranged, avoid easily allowing system enter the situation of low electric weight or direct shutdown under the heavy load working condition, thereby can extend system works and stand-by time.
For solving the problems of the technologies described above, embodiments of the present invention provide a kind of evaluation method of battery electric quantity, comprise following steps:
Preserve in advance cell voltage under normalized current and the mapping table of battery electric quantity in terminal device; Wherein, described normalized current is that system enters holding state but working current when not entering sleep state;
When need are estimated battery electric quantity, the sampling cell voltage;
According to current loading condition, the described cell voltage that samples is carried out voltage compensation;
In mapping table with the described cell voltage of cell voltage substitution after described voltage compensation and battery electric quantity, obtain corresponding battery electric quantity;
Show the described battery electric quantity that obtains.
Embodiments of the present invention also provide a kind of terminal device, comprise:
Voltage electric weight corresponding relation is preserved module, for the cell voltage under the preservation normalized current and the mapping table of battery electric quantity; Wherein, described normalized current is that system enters holding state but working current when not entering sleep state;
Sampling module is used for when need are estimated battery electric quantity, the sampling cell voltage;
Compensating module is used for according to current loading condition, the cell voltage that described sampling module samples being carried out voltage compensation;
Modular converter is used for the described cell voltage of cell voltage substitution after described voltage compensation and the mapping table of battery electric quantity, obtains corresponding battery electric quantity;
Display module is used for showing the battery electric quantity that described modular converter obtains.
Embodiment of the present invention in terms of existing technologies, before mapping table by the cell voltage that obtains according to the battery discharge curve map in the cell voltage substitution that will sample and battery electric quantity, first the cell voltage that samples is carried out voltage compensation, in mapping table with the described cell voltage of cell voltage substitution after described voltage compensation and battery electric quantity, obtain corresponding battery electric quantity and show.Due to power consumption than heavy load because the voltage drop that discharge capacity causes greatly compensates, the voltage after its compensation can be complementary with the voltage of standard discharge curve, avoided the larger problem of electric weight display error in the detecting voltage method.Therefore, the battery electric quantity that obtains according to the cell voltage after voltage compensation can have higher battery electric quantity display precision, avoid easily allowing system enter the situation of low electric weight or direct shutdown under the heavy load working condition, thereby can extend system works and stand-by time.And, based on be still the detecting voltage ratio juris, need not to carry out current sense, thereby can realize this scheme in the situation that do not increase hardware cost, namely hardware cost is cheap.
Preferably, according to current loading condition, the described cell voltage that samples is carried out comprising following substep in the step of voltage compensation: pre-stored the first mapping table, described the first mapping table is for respectively loading on corresponding pressure drop under each voltage section; Voltage section residing according to the described cell voltage that samples searched described the first mapping table, obtains corresponding pressure drop under present load; With the pressure drop of the described correspondence that finds, the voltage as the needs compensation carries out voltage compensation to the described cell voltage that samples.At the first mapping table that obtains according to experimental data accurately in situation, bucking voltage preferably makes the discharge curve data that magnitude of voltage after compensation can the match-on criterion electric current.
Preferably, according to current loading condition, the described cell voltage that samples is carried out in the step of voltage compensation, comprise following substep: pre-stored the second mapping table, the pressure reduction that described the second mapping table is the double magnitude of voltage that samples corresponding pressure drop under each voltage section; Calculate the pressure reduction of the described cell voltage that samples and the last cell voltage that samples; According to the pressure reduction of described calculating, search described the second mapping table, obtain corresponding pressure drop under the residing voltage section of the described cell voltage that samples; With the pressure drop of the described correspondence that finds, the voltage as the needs compensation carries out voltage compensation to the described cell voltage that samples.In the situation that larger pressure drop is arranged by this compensation mechanism, the discharge curve data that the magnitude of voltage after further guaranteeing to compensate can the match-on criterion electric current
Preferably, calculating sampling to cell voltage with on during the pressure reduction of the cell voltage that once samples, first the described cell voltage that samples is carried out data smoothing with the last cell voltage that samples and process, the pressure reduction of the cell voltage that the described pressure reduction of calculating arrives for the adjacent double sampling after processing through data smoothing.Due in the unsettled situation of working current, sampled voltage fluctuation is very large, carries out the voltage compensation difficulty very large.Therefore by data being carried out the shake that smoothing processing can effectively suppress sampled voltage.
Description of drawings
Fig. 1 is battery discharge curve map of the prior art;
Fig. 2 is the evaluation method process flow diagram according to the battery electric quantity of first embodiment of the invention;
Fig. 3 is the evaluation method process flow diagram according to the battery electric quantity of second embodiment of the invention;
Fig. 4 is according to each voltage curve schematic diagram in second embodiment of the invention;
Fig. 5 is the evaluation method process flow diagram according to the battery electric quantity of third embodiment of the invention;
Fig. 6 is the terminal device structural representation according to four embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the embodiments of the present invention are explained in detail.Yet, persons of ordinary skill in the art may appreciate that in each embodiment of the present invention, in order to make the reader understand the application better, many ins and outs have been proposed.But, even without these ins and outs with based on many variations and the modification of following each embodiment, also can realize each claim of the application technical scheme required for protection.
The first embodiment of the present invention relates to a kind of evaluation method of battery electric quantity.Idiographic flow as shown in Figure 2.
In step 210, in advance according to the relation of the cell voltage under normalized current and battery electric quantity, draw the battery discharge curve map, and the cell voltage under the normalized current that will obtain according to this battery discharge curve map and the mapping table of battery electric quantity, be kept in terminal device.Wherein, described normalized current is that system enters holding state but working current when not entering sleep state, does not namely carry out any business, the working current when closing display screen, closed communication function.
Specifically, under normalized current, the full battery of charging is discharged with described normalized current, till battery electric quantity has consumed.During described battery discharge, periodically cell voltage is sampled.Wherein, the sampling period of voltage can be for 30 seconds, and preserved the sampled voltage data.According to the cell voltage data that described periodic samples arrives, draw described battery discharge curve map, so just can determine the transformational relation of the voltage-electric weight of standard.The mapping table that obtains cell voltage under normalized current and battery electric quantity according to the battery discharge curve map belongs to the known technology of this area, does not repeat them here.
When need are estimated battery electric quantity, enter step 220.In step 220, cell voltage is sampled.The voltage that samples is the digital voltage after analog to digital conversion.
Then, in step 230, according to current loading condition, the described cell voltage that samples is carried out voltage compensation.Due to for terminal device, increase the load meeting and introduce a pressure drop, its pressure drop is different under different voltage condition.This phenomenon can learn by the battery discharge curve, and namely in same electric weight situation, discharge current is larger, and sampled voltage is less.Therefore, in the present embodiment, add voltage compensation mechanism for different loads (such as communication function, Presentation Function etc.).
In the present embodiment, the first mapping table according to pre-stored carries out voltage compensation.Specifically, pre-stored the first mapping table, this first mapping table is for respectively loading on corresponding pressure drop (as shown in table 1) under each voltage section, matrix data in table 1 obtains by test, each behavior one voltage section in table 1, greater than 4100mV and less than or equal to the voltage section of 4200mV, the line display at " 4100 " place is greater than 3900mV and less than or equal to the voltage section of 4100mV as the line display at " 4200 " place, the like.
| Voltage (mV) | Display apparatus module | Sound module | Camera module | Communication module | Modulator-demodular unit |
| 4200 | |||||
| 4100 | ΔV1 | ΔV2 | |||
| 3900 | |||||
| 3800 | |||||
| 3700 | |||||
| 3600 | |||||
| 3500 |
Table 1
In this step, voltage section residing according to the cell voltage that samples searched this first mapping table, obtains corresponding pressure drop under present load.Such as, in system, mainly whether power consumption hardware is in running order by obtaining for terminal device, learn current display apparatus module and the camera module also opened, and be in " 3900mV to 4100mV " this voltage section by the voltage that ADC (analog to digital converter) samples, can find in described table 1, corresponding pressure drop is Δ V1 and Δ V2 under present load.Then, with the pressure drop of the described correspondence that finds, the voltage as the needs compensation carries out voltage compensation to the described cell voltage that samples.Such as the cell voltage that samples is V, the cell voltage V ' after voltage compensation=V+ Δ V1+ Δ V2.That is to say, introduce in the present embodiment a load voltage compensation matrix as shown in table 1, for the larger load of power consumption, in different cell voltage situations, calculate its pressure drop.
Then, in step 240, in the mapping table with the cell voltage of the cell voltage substitution pre-save after voltage compensation and battery electric quantity, obtain corresponding battery electric quantity.
Then, in step 250, terminal device shows the battery electric quantity that obtains, and this step is same as the prior art, does not repeat them here.
It will be understood by those skilled in the art that in the situation that discharge current is constant, cell voltage and electric weight have one-to-one relationship, namely can determine its relation by the discharge curve of a certain steady current, as shown in Figure 1.And under truth, only at the low-power consumption standby state, just substantially satisfy the constant condition of discharge current, but in more existing systems, after system enters low-power consumption, the software cell voltage of can't sampling, only have the system of working as to enter normal operating conditions, the cell voltage of just can sampling.In normal operation, discharge current is not invariable, and in fact, along with the variation of business, the discharge current fluctuation can be larger, thereby cause the sampled voltage fluctuation larger.
And in the present embodiment, due to power consumption is compensated because of the voltage drop that discharge capacity causes greatly than heavy load, voltage after it is compensated can be complementary with the voltage of standard discharge curve, has avoided the larger problem of electric weight display error in the detecting voltage method.Therefore, the battery electric quantity that obtains according to the cell voltage after voltage compensation can have higher battery electric quantity display precision, avoid easily allowing system enter the situation of low electric weight or direct shutdown under the heavy load working condition, thereby can extend system works and stand-by time.And, based on be still the detecting voltage ratio juris, need not to carry out current sense, thereby can realize this scheme in the situation that do not increase hardware cost, namely hardware cost is cheap.
The second embodiment of the present invention relates to a kind of evaluation method of battery electric quantity.The second embodiment and the first embodiment are roughly the same, key distinction part is: in the first embodiment, terminal device is when carrying out voltage compensation, be whether in running order according to main power consumption hardware in system, search corresponding pressure drop under present load in the first mapping table.And in second embodiment of the invention, needing pre-stored the second mapping table, the second mapping table is pressure reduction corresponding pressure drop under each voltage section of the double magnitude of voltage that samples.Terminal device is when carrying out voltage compensation, calculate the pressure reduction of the cell voltage that adjacent double sampling arrives, pressure reduction according to described calculating, search described the second mapping table, obtain corresponding pressure drop under the residing voltage section of the described cell voltage that samples, and the pressure drop of the correspondence that will find, as the voltage of needs compensation.
Specifically, as shown in Figure 3, step 310 is identical with step 220 with step 210 respectively with step 320, does not repeat them here.
In step 330, terminal device carries out data smoothing to the cell voltage that samples to be processed.Due in discharge process, the sampled voltage curve is not to be steadily smooth, but exists large discharge current fluctuation of moment to disturb, in the curve shake that shows as on curve in a segment limit.Such actual samples curve is unfavorable for the late time data analysis, affects the transformational relation of voltage-electric weight.Therefore need filtering large discharge current of these moments to fluctuate smooth curve, in the present embodiment, adopt the weighted mean algorithm to come level and smooth sampled data.
Specifically, weighted average method is a kind of improvement of mean value method, if in measuring process, needs the special measured value of paying attention to certain one-phase (such as the current generation), and takes into account again the measured value of considering other stages (such as the stage in past).Can be by sampled data be carried out the shake that smoothing processing reduces sampled data.Because sampled voltage is constantly to change, therefore it is not a definite value, but shake within the specific limits.Therefore in the present embodiment by adopting Weighted Average Algorithm to remove the fluctuation of sampled data, its basic thought is that current output valve Y is not only relevant with current sampled data, and simultaneously also relevant with a front N-1 sampled data, correlativity represents with weighting coefficient, X
iRepresent sampled data.Arthmetic statement is as follows:
Wherein: ε
1, ε
2, ε
3... ε
NBe weighting coefficient; And ε
1+ ε
2+ ε
3+ ...+ε
N=1.
In practice, the general algorithmic formula description of using after being out of shape:
ε wherein
1+ ε
2+ ε
3+ ...+ε
N=ε, and ε=2
a
In the present embodiment, get a=4, ε
1=6, ε
2=4, ε
3=3, ε
4=3.Certainly, in actual applications, can revise these parameters according to real needs (such as factors such as smooth effect, operands), not exemplify one by one at this.By the smoothing processing of data, can make the fluctuating range of sampled data reduce, good inhibitory mutagenesis sampled value is arranged simultaneously, this inhibition can prevent the impact that the sampled voltage sudden change brings.
Then, in step 340 and 350, the pressure reduction of the cell voltage that the adjacent double sampling of calculating after data smoothing is processed arrives, search the second mapping table according to the pressure reduction of described calculating, obtain corresponding pressure drop under the residing voltage section of the cell voltage that samples, and carry out voltage compensation with this voltage as the needs compensation.
Specifically, outer be located at the factors such as current fluctuation that cause under different conditions and all voltage compensation increased difficulty due to numerous, in the unsettled situation of working current, the sampled voltage fluctuation is very large, carries out the voltage compensation difficulty larger.Above-mentioned curve smoothing algorithm can effectively suppress the shake of sampled voltage, but in the situation that larger pressure drop is arranged, also needs to utilize a kind of curve simulation mechanism to make up this defective.Curve simulation mechanism based on battery in the same charge situation, discharge current is different, the characteristic that the voltage that presents is different, in the large situation of pressure drop, pressure reduction according to twice measured value in front and back, determine the discharge curve that current voltage is corresponding, after discharge curve was determined, the relation of voltage and electric weight had just been determined.That is to say, for a system, the discharge current I of existence
0, I
1..., I
n, corresponding n+1 bar discharge curve, the also corresponding corresponding relation of n+1 kind voltage with electric weight by battery is surveyed, can obtain I-V-C (current-voltage-electric weight) matrix table.If the voltage of one-shot measurement and corresponding discharge curve thereof were benchmark in the past, the voltage of the current voltage that records and front one-shot measurement pressure reduction, by the comparison to the I-V-C matrix, just can determine corresponding discharge curve, thereby find corresponding electric weight from matrix.In theory, the I vector of I-V-C matrix matrix typing is more, and the electric weight that obtains more approaches actual value.In reality, because of the same curves of different voltage sections be also different in pressure drop, need to increase the dimension V of a voltage section
D, i.e. the V that actual operation time inquiry is four-dimensional
D-I-V-C matrix, it is more that computing consumes cpu resource, therefore, the curve simulation mechanism implementation that present embodiment proposes more to simplify on this basis, namely take the benchmark discharge curve as reference, in benchmark discharge curve territory, and voltage corresponding to basis of reference discharge curve and the corresponding relation of electric weight obtain charge value with the voltage transitions after level and smooth.Specific implementation is as follows:
Pre-stored second mapping table as shown in table 2, in table 2, every delegation represents that a voltage section is (as the line display at " 4200 " place greater than 4100mV and less than or equal to the voltage section of 4200mV, the line display at " 4100 " place is greater than 3900mV and less than or equal to the voltage section of 4100mV, the like); In table 2, each classifies the voltage compensation value in the situation of same pressure drop under different voltage sections as.Such as in the time of in the voltage section of 3700mV to 3800mV, when the magnitude of voltage of continuous sampling differs 10mV after level and smooth, checking in bucking voltage from table 2 is Δ V, and the voltage V that obtains after level and smooth should be modified to V '=V+ Δ V after compensation.Can effectively suppress the larger problem of change in pressure drop like this.
| Voltage pressure drop (mV) | 5 | 10 | 15 | 20 | 25 |
| 4200 | |||||
| 4100 | |||||
| 3900 | |||||
| 3800 | |
||||
| 3700 | |||||
| 3600 | |||||
| 3500 |
Table 2
Generally speaking, " curve simulation mechanism " is replenishing the voltage compensation mechanism of specific transactions.Because system can't obtain current charge/discharge stream, can't obtain the I-V-C matrix table, after therefore judging Δ I by instantaneous pressure drop (being the pressure reduction of the magnitude of voltage of continuous 2 samplings), can obtain the second mapping table as shown in table 2.Under different current cell voltages, identical " instantaneous pressure drop " corresponding different Δ I, therefore the magnitude of voltage of compensation is also different.
In step 360, in the battery discharge curve map that the cell voltage substitution after voltage compensation is pre-rendered, obtain corresponding battery electric quantity.Afterwards, in step 370, terminal device shows the battery electric quantity that obtains.Step 360 is identical with step 250 with step 240 respectively with step 370.
Fig. 4 adopts each voltage curve of curve simulation mechanism in present embodiment, wherein, curve a is the curve of original sampling data, and curve b is the curve after voltage compensation, and curve c is level and smooth simulation curve.To this section of x=90 interval, because pressure drop is larger, therefore can adopt simulation curve to go to replace (straight line with certain slope substitutes) here at x=55.
It is worth mentioning that, need to determine the initial cells electric weight after system starts, the initial value of battery electric quantity is determining follow-up electric weight displayed value, therefore seems particularly important.When system had just started, the peripheral hardware of equipment powered on successively, so the power consumption current fluctuation is very large, and this just causes the sampled voltage fluctuation very large, and data can be found sampled point is during this period of time averaged by experiment, and the curve of its sampled voltage is smoother, shakes less.Start period in system, can improve the sampling period, such as the sampling period was 1 second.In smart mobile phone, because equipment is more, system is longer start-up time, such as system's start-up time that arranged 30 seconds.That is to say, in start-up time, can be made as for 1 second in the system in 30 seconds the sampling period.
X=0 in Fig. 4 is to this section of x=55 interval, and the sampled voltage when being exactly system's startup can find that this segment data fluctuation is larger, and when reason is system's startup, electric current is unstable causes.Therefore adopt mean algorithm to remove level and smooth this section curve here, the diagram smooth effect is obvious.
Third embodiment of the invention relates to a kind of evaluation method of battery electric quantity, in present embodiment, the voltage compensation mode in the first and second embodiments has been carried out combination.Namely when carrying out voltage compensation, first carry out primary voltage compensation according to the first mapping table, then, then carry out secondary voltage compensation according to the second mapping table, as shown in Figure 5.
Specifically, pre-stored the first mapping table and the second mapping table, wherein, the first mapping table is for respectively loading on corresponding pressure drop under each voltage section; The second mapping table is pressure reduction corresponding pressure drop under each voltage section of the double magnitude of voltage that samples.
When need carried out voltage compensation, voltage section residing according to the cell voltage that samples searched described the first mapping table, obtains corresponding pressure drop under present load; With the pressure drop of the described correspondence that finds, as the voltage that needs for the first time to compensate, the described cell voltage that samples is carried out voltage compensation for the first time.
Then, to carrying out calculating pressure reduction after data smoothing is processed at the cell voltage through obtaining after described voltage compensation for the first time through the cell voltage after described voltage compensation for the first time and the last cell voltage that samples; According to the pressure reduction of described calculating, search described the second mapping table, obtain corresponding pressure drop under voltage section of living in, and with this pressure drop as the voltage that needs for the second time to compensate, the described cell voltage that samples is carried out voltage compensation for the second time.
In the present embodiment, will through the magnitude of voltage substitution battery discharge curve map after twice compensation, obtain corresponding battery electric quantity and show.
Need to prove, above the step of the whole bag of tricks divide, just in order to be described clearly, can merge into a step when realizing or some step is split, be decomposed into a plurality of steps, as long as comprise identical logical relation, all in the protection domain of this patent; To adding inessential modification in algorithm or in flow process or introduce inessential design, but the core design that does not change its algorithm and flow process is all in the protection domain of this patent.
Four embodiment of the invention relates to a kind of terminal device, as shown in Figure 6, comprises:
Voltage electric weight corresponding relation is preserved module, for the cell voltage under the preservation normalized current and the mapping table of battery electric quantity; Wherein, described normalized current is that system enters holding state but working current when not entering sleep state.
Sampling module is used for when need are estimated battery electric quantity, the sampling cell voltage.
Compensating module is used for according to current loading condition, the cell voltage that described sampling module samples being carried out voltage compensation.
Modular converter is used for the described cell voltage of cell voltage substitution after described voltage compensation and the mapping table of battery electric quantity, obtains corresponding battery electric quantity.
Display module is used for showing the battery electric quantity that described modular converter obtains.
Compensating module comprises following submodule:
The first sub module stored is used for storage the first mapping table, and described the first mapping table is for respectively loading on corresponding pressure drop under each voltage section.
First searches submodule, is used for voltage section residing according to the described cell voltage that samples, and searches described the first mapping table, obtains corresponding pressure drop under present load.
The first compensation submodule is used for will described first searching the pressure drop of the correspondence that submodule finds, and the voltage as needs compensate carries out voltage compensation to the described cell voltage that samples.
Be not difficult to find, present embodiment is the system embodiment corresponding with the first embodiment, present embodiment can with the enforcement of working in coordination of the first embodiment.The correlation technique details of mentioning in the first embodiment is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the correlation technique details of mentioning in present embodiment also can be applicable in the first embodiment.
It is worth mentioning that, each module involved in present embodiment is logic module, and in actual applications, a logical block can be a physical location, can be also the part of a physical location, can also realize with the combination of a plurality of physical locations.In addition, for outstanding innovation part of the present invention, will introduce not too close unit with solving technical matters relation proposed by the invention in present embodiment, but this does not show and does not have other unit in present embodiment.
Fifth embodiment of the invention relates to a kind of terminal device.The 5th embodiment and the 4th embodiment are roughly the same, and key distinction part is: in the 4th embodiment, compensating module is to carry out voltage compensation according to the first mapping table.And in fifth embodiment of the invention, compensating module is to carry out voltage compensation according to the second mapping table.
Specifically, compensating module comprises following submodule:
The second sub module stored is used for storage the second mapping table, the pressure reduction that described the second mapping table is the double magnitude of voltage that samples corresponding pressure drop under each voltage section.
Calculating sub module is used for calculating the pressure reduction of cell voltage that described sampling module samples and the last cell voltage that samples.
Second searches submodule, is used for the pressure reduction according to described calculating sub module calculating, searches described the second mapping table, obtains corresponding pressure drop under the residing voltage section of the described cell voltage that samples.
The second compensation submodule is used for will described second searching the pressure drop of the correspondence that submodule finds, and the voltage as needs compensate carries out voltage compensation to the described cell voltage that samples.
It is worth mentioning that, described calculating sub module can comprise following subelement:
The smoothing processing subelement is used for that the described cell voltage that samples is carried out data smoothing with the last cell voltage that samples and processes;
The pressure reduction of the cell voltage that the described pressure reduction that described calculating sub module is calculated arrives for the adjacent double sampling after processing through data smoothing.
Be not difficult to find, present embodiment is the system embodiment corresponding with the second embodiment.Because the second embodiment is mutually corresponding with present embodiment, thus present embodiment can with the enforcement of working in coordination of the second embodiment.The correlation technique details of mentioning in the second embodiment is still effective in the present embodiment, and the technique effect that can reach in the second embodiment can be realized in the present embodiment too, in order to reduce repetition, repeats no more here.Correspondingly, the correlation technique details of mentioning in present embodiment also can be applicable in the second embodiment.
Sixth embodiment of the invention relates to a kind of terminal device.Present embodiment combines two kinds of voltage compensation modes in the 4th and the 5th embodiment, and namely compensating module after carrying out voltage compensation according to the first mapping table, also needs again to carry out voltage compensation according to the second mapping table.
Be not difficult to find, present embodiment is the system embodiment corresponding with the 3rd embodiment.Because the 3rd embodiment is mutually corresponding with present embodiment, thus present embodiment can with the enforcement of working in coordination of the 3rd embodiment.The correlation technique details of mentioning in the 3rd embodiment is still effective in the present embodiment, and the technique effect that can reach in the 3rd embodiment can be realized in the present embodiment too, in order to reduce repetition, repeats no more here.Correspondingly, the correlation technique details of mentioning in present embodiment also can be applicable in the 3rd embodiment.
Persons of ordinary skill in the art may appreciate that the respective embodiments described above are to realize specific embodiments of the invention, and in actual applications, can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (11)
1. the evaluation method of a battery electric quantity, is characterized in that, comprises following steps:
Preserve in advance cell voltage under normalized current and the mapping table of battery electric quantity in terminal device, wherein, described normalized current is that system enters holding state but working current when not entering sleep state;
When need are estimated battery electric quantity, the sampling cell voltage;
According to current loading condition, the described cell voltage that samples is carried out voltage compensation;
In mapping table with the described cell voltage of cell voltage substitution after described voltage compensation and battery electric quantity, obtain corresponding battery electric quantity;
Show the described battery electric quantity that obtains.
2. the evaluation method of battery electric quantity according to claim 1, is characterized in that,
Describedly according to current loading condition, the described cell voltage that samples is carried out comprising following substep in the step of voltage compensation:
Pre-stored the first mapping table, described the first mapping table is for respectively loading on corresponding pressure drop under each voltage section;
Voltage section residing according to the described cell voltage that samples searched described the first mapping table, obtains corresponding pressure drop under present load;
With the pressure drop of the described correspondence that finds, the voltage as the needs compensation carries out voltage compensation to the described cell voltage that samples.
3. the evaluation method of battery electric quantity according to claim 1, is characterized in that, describedly according to current loading condition, the described cell voltage that samples carried out comprising following substep in the step of voltage compensation:
Pre-stored the second mapping table, the pressure reduction that described the second mapping table is the double magnitude of voltage that samples corresponding pressure drop under each voltage section;
Calculate the pressure reduction of the described cell voltage that samples and the last cell voltage that samples;
According to the pressure reduction of described calculating, search described the second mapping table, obtain corresponding pressure drop under the residing voltage section of the described cell voltage that samples;
With the pressure drop of the described correspondence that finds, the voltage as the needs compensation carries out voltage compensation to the described cell voltage that samples.
4. the evaluation method of battery electric quantity according to claim 3, it is characterized in that, when calculating described pressure reduction, first the described cell voltage that samples is carried out data smoothing with the last cell voltage that samples and process, the pressure reduction of the cell voltage that the described pressure reduction of calculating arrives for the adjacent double sampling after processing through data smoothing.
5. the evaluation method of battery electric quantity according to claim 1, is characterized in that, describedly according to current loading condition, the described cell voltage that samples carried out comprising following substep in the step of voltage compensation:
Pre-stored the first mapping table and the second mapping table, wherein, the first mapping table is for respectively loading on corresponding pressure drop under each voltage section; The second mapping table is pressure reduction corresponding pressure drop under each voltage section of the double magnitude of voltage that samples;
Voltage section residing according to the described cell voltage that samples searched described the first mapping table, obtains corresponding pressure drop under present load;
With the pressure drop of the described correspondence that finds, as the voltage that needs for the first time to compensate, the described cell voltage that samples is carried out voltage compensation for the first time;
To carrying out calculating pressure reduction after data smoothing is processed at the cell voltage through obtaining after described voltage compensation for the first time through the cell voltage after described voltage compensation for the first time and the last cell voltage that samples;
According to the pressure reduction of described calculating, search described the second mapping table, obtain corresponding pressure drop under voltage section of living in, and with this pressure drop as the voltage that needs for the second time to compensate, the described cell voltage that samples is carried out voltage compensation for the second time.
6. the evaluation method of the described battery electric quantity of any one according to claim 1 to 5 is characterized in that cell voltage under described normalized current and the mapping table of battery electric quantity, obtains in the following manner:
The full battery of charging is discharged with described normalized current, till battery electric quantity has consumed;
During described battery discharge, periodically cell voltage is sampled;
According to the cell voltage data that described periodic samples arrives, draw the battery discharge curve map;
According to described battery discharge curve map, obtain cell voltage under described normalized current and the mapping table of battery electric quantity.
7. the evaluation method of battery electric quantity according to claim 6, is characterized in that, the described cycle is 30 seconds.
8. a terminal device, is characterized in that, comprises:
Voltage electric weight corresponding relation is preserved module, for the cell voltage under the preservation normalized current and the mapping table of battery electric quantity; Wherein, described normalized current is that system enters holding state but working current when not entering sleep state;
Sampling module is used for when need are estimated battery electric quantity, the sampling cell voltage;
Compensating module is used for according to current loading condition, the cell voltage that described sampling module samples being carried out voltage compensation;
Modular converter is used for the described cell voltage of cell voltage substitution after described voltage compensation and the mapping table of battery electric quantity, obtains corresponding battery electric quantity;
Display module is used for showing the battery electric quantity that described modular converter obtains.
9. terminal device according to claim 8, is characterized in that, described compensating module comprises following submodule:
The first sub module stored is used for storage the first mapping table, and described the first mapping table is for respectively loading on corresponding pressure drop under each voltage section;
First searches submodule, is used for voltage section residing according to the described cell voltage that samples, and searches described the first mapping table, obtains corresponding pressure drop under present load;
The first compensation submodule is used for will described first searching the pressure drop of the correspondence that submodule finds, and the voltage as needs compensate carries out voltage compensation to the described cell voltage that samples.
10. terminal device according to claim 8, is characterized in that, described compensating module comprises following submodule:
The second sub module stored is used for storage the second mapping table, the pressure reduction that described the second mapping table is the double magnitude of voltage that samples corresponding pressure drop under each voltage section;
Calculating sub module is used for calculating the pressure reduction of cell voltage that described sampling module samples and the last cell voltage that samples;
Second searches submodule, is used for the pressure reduction according to described calculating sub module calculating, searches described the second mapping table, obtains corresponding pressure drop under the residing voltage section of the described cell voltage that samples;
The second compensation submodule is used for will described second searching the pressure drop of the correspondence that submodule finds, and the voltage as needs compensate carries out voltage compensation to the described cell voltage that samples.
11. terminal device according to claim 10 is characterized in that, described calculating sub module comprises following subelement:
The smoothing processing subelement is used for that the described cell voltage that samples is carried out data smoothing with the last cell voltage that samples and processes;
The pressure reduction of the cell voltage that the described pressure reduction that described calculating sub module is calculated arrives for the adjacent double sampling after processing through data smoothing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110436267.1A CN103176132B (en) | 2011-12-22 | 2011-12-22 | The evaluation method of battery electric quantity and terminal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110436267.1A CN103176132B (en) | 2011-12-22 | 2011-12-22 | The evaluation method of battery electric quantity and terminal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103176132A true CN103176132A (en) | 2013-06-26 |
| CN103176132B CN103176132B (en) | 2015-08-12 |
Family
ID=48636119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110436267.1A Active CN103176132B (en) | 2011-12-22 | 2011-12-22 | The evaluation method of battery electric quantity and terminal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103176132B (en) |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792489A (en) * | 2013-11-22 | 2014-05-14 | 广州视源电子科技股份有限公司 | Improved method for measuring and calculating system battery electricity quantity |
| CN103792490A (en) * | 2013-11-22 | 2014-05-14 | 广州视源电子科技股份有限公司 | Method for measuring and calculating system battery electricity quantity |
| CN103969595A (en) * | 2014-05-23 | 2014-08-06 | 开曼群岛威睿电通股份有限公司 | Electric quantity detecting device and method |
| WO2015007197A1 (en) * | 2013-07-15 | 2015-01-22 | Tencent Technology (Shenzhen) Company Limited | A method, device, platform, and mobile terminal for recording and analyzing battery power of a mobile terminal |
| CN106026220A (en) * | 2016-05-05 | 2016-10-12 | 广东欧珀移动通信有限公司 | Charging sampling voltage compensation method and mobile terminal |
| CN106646263A (en) * | 2017-01-16 | 2017-05-10 | 珠海市魅族科技有限公司 | Electric quantity metering method and electric quantity metering device |
| 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 |
| WO2017113675A1 (en) * | 2015-12-30 | 2017-07-06 | 乐视控股（北京）有限公司 | Method and system for measuring battery power of mobile communication terminal device |
| CN107817859A (en) * | 2017-10-30 | 2018-03-20 | 深圳市道通智能航空技术有限公司 | A kind of cell voltage filtering method and device |
| CN107831445A (en) * | 2017-10-30 | 2018-03-23 | 深圳市道通智能航空技术有限公司 | A kind of method and apparatus for obtaining battery dump energy |
| CN108008183A (en) * | 2017-11-28 | 2018-05-08 | 深圳市路畅科技股份有限公司 | A kind of quantity measuring method, system, equipment and computer-readable storage medium |
| CN108107374A (en) * | 2017-12-27 | 2018-06-01 | 北京传嘉科技有限公司 | The battery power quantity display method and device of terminal device |
| CN108333516A (en) * | 2017-01-17 | 2018-07-27 | 盈正豫顺电子股份有限公司 | Battery state testing method and system |
| CN108549029A (en) * | 2018-01-19 | 2018-09-18 | 昆山国显光电有限公司 | Detection method, device and the terminal of battery capacity |
| CN110350260A (en) * | 2019-05-31 | 2019-10-18 | 恒大新能源科技集团有限公司 | A kind of battery core benefit method for electrically |
| CN110785923A (en) * | 2017-07-28 | 2020-02-11 | 泽藤电机株式会社 | Motor control device and motor control method |
| CN111585572A (en) * | 2020-04-28 | 2020-08-25 | 广州视源电子科技股份有限公司 | Sampling method, device, terminal equipment and storage medium |
| CN112130082A (en) * | 2019-06-05 | 2020-12-25 | 海能达通信股份有限公司 | Method and equipment for calculating battery electric quantity and device with storage function |
| CN112292604A (en) * | 2018-10-31 | 2021-01-29 | 华为技术有限公司 | Battery voltage compensation method and device and terminal equipment |
| WO2021259154A1 (en) * | 2020-06-24 | 2021-12-30 | 深圳市道通科技股份有限公司 | Method for measuring battery reserve capacity of storage battery, and battery detection device |
| CN116430255A (en) * | 2023-03-27 | 2023-07-14 | 广州通则康威智能科技有限公司 | Battery electric quantity self-adaptive display method, device, storage medium and system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0512711A2 (en) * | 1991-05-07 | 1992-11-11 | Matsushita Electric Industrial Co., Ltd. | Device for measuring the quantity of electricity stored in a battery |
| JP2004301784A (en) * | 2003-03-31 | 2004-10-28 | Yazaki Corp | Dischargeable capacity estimating method and device for battery |
| CN1641372A (en) * | 2004-01-02 | 2005-07-20 | 明基电通股份有限公司 | Mobile electronic device cell volume compensating device and method |
| CN1889736A (en) * | 2006-08-08 | 2007-01-03 | 北京天碁科技有限公司 | Method for measuring mobile communication terminal battery electricity quantity |
| CN1979942A (en) * | 2005-11-30 | 2007-06-13 | 比亚迪股份有限公司 | Display circuit for residual electricity quantity of secondary cell |
| CN101126796A (en) * | 2007-10-12 | 2008-02-20 | 深圳华为通信技术有限公司 | Battery electric quantity detecting method and device |
| CN101153894A (en) * | 2006-09-26 | 2008-04-02 | 鸿富锦精密工业（深圳）有限公司 | Electricity quantity detecting method, electricity quantity detecting system and electronic equipment using the same method |
| CN101728588A (en) * | 2008-10-10 | 2010-06-09 | 鸿富锦精密工业（深圳）有限公司 | Wireless communication terminal and method for determining battery electric quantity thereof |
| CN101806867A (en) * | 2010-03-12 | 2010-08-18 | 中兴通讯股份有限公司 | Method and device for measuring electric quantity of mobile phone battery |
-
2011
- 2011-12-22 CN CN201110436267.1A patent/CN103176132B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0512711A2 (en) * | 1991-05-07 | 1992-11-11 | Matsushita Electric Industrial Co., Ltd. | Device for measuring the quantity of electricity stored in a battery |
| JP2004301784A (en) * | 2003-03-31 | 2004-10-28 | Yazaki Corp | Dischargeable capacity estimating method and device for battery |
| CN1641372A (en) * | 2004-01-02 | 2005-07-20 | 明基电通股份有限公司 | Mobile electronic device cell volume compensating device and method |
| CN1979942A (en) * | 2005-11-30 | 2007-06-13 | 比亚迪股份有限公司 | Display circuit for residual electricity quantity of secondary cell |
| CN1889736A (en) * | 2006-08-08 | 2007-01-03 | 北京天碁科技有限公司 | Method for measuring mobile communication terminal battery electricity quantity |
| CN101153894A (en) * | 2006-09-26 | 2008-04-02 | 鸿富锦精密工业（深圳）有限公司 | Electricity quantity detecting method, electricity quantity detecting system and electronic equipment using the same method |
| CN101126796A (en) * | 2007-10-12 | 2008-02-20 | 深圳华为通信技术有限公司 | Battery electric quantity detecting method and device |
| CN101728588A (en) * | 2008-10-10 | 2010-06-09 | 鸿富锦精密工业（深圳）有限公司 | Wireless communication terminal and method for determining battery electric quantity thereof |
| CN101806867A (en) * | 2010-03-12 | 2010-08-18 | 中兴通讯股份有限公司 | Method and device for measuring electric quantity of mobile phone battery |
Non-Patent Citations (1)
| Title |
|---|
| 文明等: "电动车辆电池电量检测仪的设计", 《工业仪表与自动化装置》 * |
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015007197A1 (en) * | 2013-07-15 | 2015-01-22 | Tencent Technology (Shenzhen) Company Limited | A method, device, platform, and mobile terminal for recording and analyzing battery power of a mobile terminal |
| CN103792490A (en) * | 2013-11-22 | 2014-05-14 | 广州视源电子科技股份有限公司 | Method for measuring and calculating system battery electricity quantity |
| CN103792490B (en) * | 2013-11-22 | 2016-08-17 | 广州视源电子科技股份有限公司 | The method measured and calculate system battery electricity |
| CN103792489B (en) * | 2013-11-22 | 2017-03-22 | 广州视源电子科技股份有限公司 | Improved method for measuring and calculating system battery electricity quantity |
| CN103792489A (en) * | 2013-11-22 | 2014-05-14 | 广州视源电子科技股份有限公司 | Improved method for measuring and calculating system battery electricity quantity |
| CN103969595A (en) * | 2014-05-23 | 2014-08-06 | 开曼群岛威睿电通股份有限公司 | Electric quantity detecting device and method |
| WO2017113675A1 (en) * | 2015-12-30 | 2017-07-06 | 乐视控股（北京）有限公司 | Method and system for measuring battery power of mobile communication terminal device |
| EP3211441A4 (en) * | 2015-12-30 | 2018-01-24 | Le Holdings (Beijing) Co., Ltd. | Method and system for measuring battery power of mobile communication terminal device |
| CN106026220A (en) * | 2016-05-05 | 2016-10-12 | 广东欧珀移动通信有限公司 | Charging sampling voltage compensation method and mobile 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 |
| 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 |
| CN106646263A (en) * | 2017-01-16 | 2017-05-10 | 珠海市魅族科技有限公司 | Electric quantity metering method and electric quantity metering device |
| CN108333516A (en) * | 2017-01-17 | 2018-07-27 | 盈正豫顺电子股份有限公司 | Battery state testing method and system |
| CN110785923A (en) * | 2017-07-28 | 2020-02-11 | 泽藤电机株式会社 | Motor control device and motor control method |
| CN107831445A (en) * | 2017-10-30 | 2018-03-23 | 深圳市道通智能航空技术有限公司 | A kind of method and apparatus for obtaining battery dump energy |
| WO2019085562A1 (en) * | 2017-10-30 | 2019-05-09 | 深圳市道通智能航空技术有限公司 | Method and apparatus for acquiring remaining state of charge of battery |
| WO2019085561A1 (en) * | 2017-10-30 | 2019-05-09 | 深圳市道通智能航空技术有限公司 | Battery voltage filtering method and apparatus |
| CN107817859A (en) * | 2017-10-30 | 2018-03-20 | 深圳市道通智能航空技术有限公司 | A kind of cell voltage filtering method and device |
| CN108008183A (en) * | 2017-11-28 | 2018-05-08 | 深圳市路畅科技股份有限公司 | A kind of quantity measuring method, system, equipment and computer-readable storage medium |
| CN108107374A (en) * | 2017-12-27 | 2018-06-01 | 北京传嘉科技有限公司 | The battery power quantity display method and device of terminal device |
| CN108549029A (en) * | 2018-01-19 | 2018-09-18 | 昆山国显光电有限公司 | Detection method, device and the terminal of battery capacity |
| CN112292604A (en) * | 2018-10-31 | 2021-01-29 | 华为技术有限公司 | Battery voltage compensation method and device and terminal equipment |
| CN112292604B (en) * | 2018-10-31 | 2021-12-21 | 华为技术有限公司 | Battery voltage compensation method and device and terminal equipment |
| CN110350260A (en) * | 2019-05-31 | 2019-10-18 | 恒大新能源科技集团有限公司 | A kind of battery core benefit method for electrically |
| CN112130082A (en) * | 2019-06-05 | 2020-12-25 | 海能达通信股份有限公司 | Method and equipment for calculating battery electric quantity and device with storage function |
| CN111585572A (en) * | 2020-04-28 | 2020-08-25 | 广州视源电子科技股份有限公司 | Sampling method, device, terminal equipment and storage medium |
| WO2021259154A1 (en) * | 2020-06-24 | 2021-12-30 | 深圳市道通科技股份有限公司 | Method for measuring battery reserve capacity of storage battery, and battery detection device |
| CN116430255A (en) * | 2023-03-27 | 2023-07-14 | 广州通则康威智能科技有限公司 | Battery electric quantity self-adaptive display method, device, storage medium and system |
| CN116430255B (en) * | 2023-03-27 | 2024-02-09 | 广州通则康威科技股份有限公司 | Battery electric quantity self-adaptive display method, device, storage medium and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103176132B (en) | 2015-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103176132B (en) | The evaluation method of battery electric quantity and terminal device | |
| CN100568013C (en) | A kind of method and system of measuring battery dump energy by the detection open-circuit voltage | |
| CN101153894B (en) | Electricity quantity detecting method, electricity quantity detecting system and electronic equipment using the same method | |
| CN107179505B (en) | Battery health state detection device and method | |
| CN102200568B (en) | Method of estimating remaining capacity and run-time of a battery device | |
| CN102739845B (en) | Electronic device capable of detecting battery power and battery power detection method | |
| US6388450B2 (en) | Method for determining the state of charge of storage batteries | |
| CN1102740C (en) | Monitoring technique for accurately determining residual capacity of battery | |
| CN102375127B (en) | Method for displaying residual battery electricity quantity of mobile terminal | |
| CN103033758A (en) | Display electric quantity value calibration method and device | |
| US20150276885A1 (en) | Method of Computing State of Charge and Battery State of Charge Monitor | |
| Xu et al. | State of charge estimation of supercapacitors based on multi‐innovation unscented Kalman filter under a wide temperature range | |
| CN105372595A (en) | Battery capacity detection system and method | |
| US20200217896A1 (en) | Device and method for evaluating energy storage device and evaluation system | |
| CN103529389A (en) | Battery power amount calculation method and system | |
| Zhang et al. | An improved non-intrusive load monitoring method for recognition of electric vehicle battery charging load | |
| CN103460063B (en) | Battery voltage measurement | |
| CN110297192B (en) | Method for estimating electric quantity during charging and discharging of battery and electric quantity correction method during starting | |
| CN102033204A (en) | Battery power detection circuit, method and electronic system | |
| CN101408591A (en) | Real time energy detection system of wireless sensor network node | |
| KR100698162B1 (en) | System and method for analyzing electric power consumption in a terminal | |
| EP3965244A2 (en) | Power management system and method for managing power in a photovoltaic system with multiple current sensors | |
| CN115327391A (en) | Detection method and device based on echelon battery utilization | |
| CN102414638B (en) | Calculating power input to a computer | |
| CN103969595A (en) | Electric quantity detecting device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170418 Address after: 201206 Shanghai, China (Shanghai) free trade zone, the moon Road, No. 3, building fourth, room B412, level 1258 Patentee after: Shanghai Li Ke Semiconductor Technology Co., Ltd. Address before: 201206 Pudong New Area Mingyue Road, Shanghai, No. 1258 Patentee before: Leadcore Technology Co., Ltd. |