CN104502850B - A kind of battery energy density detection method and system based on mobile terminal - Google Patents
A kind of battery energy density detection method and system based on mobile terminal Download PDFInfo
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Abstract
The invention discloses a kind of battery energy density detection method and system based on mobile terminal, method includes：Mobile terminal is stored in advance in battery energy density and is reduced to threshold voltage corresponding to different discharge currents of predetermined value when needing to change battery, under different battery electric quantity percentage；Mobile terminal judges whether discharge current is more than zero every the one first scheduled time real-time battery electric quantity percentage of detection battery, discharge current and cell voltage；If the discharge current is detected more than zero, and within second scheduled time, the current battery level detected is both less than current battery charge percentage correspondence threshold voltage corresponding with present discharge electric current, then is judged as battery energy density reduction.The present invention can remind user to change battery in time, so as to prevent the problems such as user using shutting down suddenly caused by low energy densities battery, provide users with the convenient by detecting battery energy density when battery energy density is reduced to a certain extent.
Description
Technical field
The present invention relates to technical field of mobile terminals, more particularly to a kind of battery energy density detection based on mobile terminal
Method and system.
Background technology
With the development of mobile communication and people's living standards continue to improve, the use of various mobile terminals such as mobile phone is got over
More to popularize, mobile phone has become indispensable Communication instrument in people's life.
Battery is the main power supply part of mobile terminal, and because battery is constantly in use state, therefore battery is most easy
One of part of loss.When battery after long-term use, its energy density can decrease.The energy density of the battery, refers to
Be the output current that can be provided when battery drops to another voltage from a voltage.For example, one piece of battery, cell voltage is
During 3.9V, if battery exports 600mA electric currents, cell voltage can be reduced to X, with the increase battery energy of battery access times
Metric density can reduce i.e. X and can reduce（X is 3.85V during such as brand new cells, and X is 3.82V after discharge and recharge several times）.
In existing mobile terminal technology, still without the method that can detect battery energy density reduction, this will cause to use
A series of problems is brought at family after for a long time reducing using mobile terminal battery energy density, and such as battery power down is fast, shuts down suddenly
Deng these problems will have a strong impact on user and use, and be that user brings inconvenience.
Therefore, prior art has yet to be improved and developed.
The content of the invention
The technical problem to be solved in the present invention is that the drawbacks described above for prior art is whole based on movement there is provided one kind
The battery energy density detection method and system at end.By the mobile terminal of user of the present invention can detect battery energy density and
Battery energy density reminds user when reducing, and provides the user conveniently.
The technical proposal for solving the technical problem of the invention is as follows：
A kind of battery energy density detection method based on mobile terminal, wherein, method includes：
A, mobile terminal are stored in advance in battery energy density and are reduced to predetermined value when needing to change battery, different battery electricity
Measure the threshold voltage corresponding to the different discharge currents under percentage；
B, mobile terminal are every the one first scheduled time real-time battery electric quantity percentage of detection battery, discharge current and electricity
Cell voltage, and judge whether discharge current is more than zero；
If C, detecting the discharge current more than zero, and within second scheduled time, the current battery level detected
Both less than current battery charge percentage correspondence threshold voltage corresponding with present discharge electric current, then be judged as battery energy density
Reduction.
The described battery energy density detection method based on mobile terminal, wherein, the step C is specifically included：
If C1, detecting the discharge current more than zero, acquisition for mobile terminal present discharge electric current and battery electric quantity percentage
Than, and current battery level is detected in real time；
C2, by current battery charge percentage, the corresponding cell voltage of discharge current and store before present discharge electricity
Corresponding threshold voltage is flowed directly contrast or contrast again after calculating；
If C3, current voltage corresponding with battery electric quantity percentage is both less than corresponding threshold values electricity within second scheduled time
Pressure, then judge and point out battery energy density to reduce or prompting replacing battery.
The described battery energy density detection method based on mobile terminal, wherein, the step C2 is specifically included：
C21, by the discharge current under current battery electric quantity percentage and the corresponding battery electric quantity percentage that stores before
Under discharge current value carry out lookup contrast；
If C22, finding identical value, it is directly right that current cell voltage is directly carried out with corresponding threshold voltage
Than；
If C23, searching less than corresponding value, by with described two neighbouring current values of discharge current and corresponding
Magnitude of voltage calculates the corresponding threshold voltage of the present discharge electric current, then the threshold values electricity that cell voltage is obtained with the calculating
Pressure is contrasted.
The described battery energy density detection method based on mobile terminal, wherein, if present discharge electric current is Ib, Ib1,
Ib2 is that immediate two of discharge current Ib under battery electric quantity percentage corresponding with storage is worth, and Ib2>Ib1, if
Vrg2th1, Vrg2th2, it is respectively the corresponding threshold voltage of Ib1, Ib2, then corresponding threshold voltages of present discharge electric current Ib
Vrg2th calculation formula is as follows：
。
The described battery energy density detection method based on mobile terminal, wherein, first scheduled time is 1s, institute
Stated for second scheduled time for 1min, the predetermined value is corresponding battery energy density when battery need to be changed as defined in manufacturer
Value.
A kind of battery energy density detecting system based on mobile terminal, wherein, system includes：
Measurement and memory module, are stored in advance in battery energy density for mobile terminal and are reduced to predetermined value needs in advance
The threshold voltage corresponding to different discharge currents during replacing battery, under different battery electric quantity percentages；
Detection and judge module, the real-time battery electric quantity hundred of battery is detected for mobile terminal every one first scheduled time
Divide ratio, discharge current and cell voltage, and judge whether discharge current is more than zero；
Compare and judge module, if for detecting the discharge current more than zero, and within second scheduled time, inspection
The current battery level measured is both less than current battery charge percentage correspondence threshold voltage corresponding with present discharge electric current, then
It is judged as battery energy density reduction.
The described battery energy density detecting system based on mobile terminal, wherein, it is described compare include with judge module：
Obtain and detection unit, if for detecting the discharge current more than zero, acquisition for mobile terminal present discharge electricity
Stream and battery electric quantity percentage, and current battery level is detected in real time；
Search comparison unit, for by current battery charge percentage, the corresponding cell voltage of discharge current with depositing before
The corresponding threshold voltage of present discharge electric current of storage directly contrast or contrasted again after calculating；
Judge and Tip element, if for current voltage corresponding with battery electric quantity percentage to be all within second scheduled time
Less than corresponding threshold voltage, then judge and point out battery energy density to reduce or prompting replacing battery.
The described battery energy density detecting system based on mobile terminal, wherein, the lookup comparison unit includes：
Searching unit, for the discharge current under current battery electric quantity percentage and the corresponding battery stored before is electric
The discharge current value measured under percentage carries out lookup contrast；
Direct comparison unit, if for finding identical value, current cell voltage is directly electric with corresponding threshold values
Pressure is directly contrasted；
Calculate and comparison unit, if for searching less than corresponding value, by neighbouring with described discharge current two
Current value and corresponding magnitude of voltage calculate the corresponding threshold voltage of the present discharge electric current, then by cell voltage with it is described
Obtained threshold voltage is calculated to be contrasted.
The described battery energy density detecting system based on mobile terminal, wherein, if present discharge electric current is Ib, Ib1,
Ib2 is that immediate two of discharge current Ib under battery electric quantity percentage corresponding with storage is worth, and Ib2>Ib1, if
Vrg2th1, Vrg2th2, it is respectively the corresponding threshold voltage of Ib1, Ib2, then corresponding threshold voltages of present discharge electric current Ib
Vrg2th calculation formula is as follows：
。
The described battery energy density detecting system based on mobile terminal, wherein, first scheduled time is 1s, institute
Stated for second scheduled time for 1min, the predetermined value is corresponding battery energy density when battery need to be changed as defined in manufacturer
Value.
The invention provides a kind of battery energy density detection method and system based on mobile terminal, method includes：Move
Dynamic terminal is stored in advance in battery energy density and is reduced to predetermined value when needing to change battery, under different battery electric quantity percentage
Threshold voltage corresponding to different discharge currents；Mobile terminal detects the real-time battery electric quantity of battery every one first scheduled time
Percentage, discharge current and cell voltage, and judge whether discharge current is more than zero；If detecting the discharge current to be more than
Zero, and within second scheduled time, the current battery level detected is both less than current battery charge percentage correspondence and current
The corresponding threshold voltage of discharge current, then be judged as battery energy density reduction.The present invention can by detecting battery energy density,
User is reminded to change battery in time when battery energy density is reduced to a certain extent, so that preventing user uses low energy
The problems such as being shut down suddenly caused by densitybattery, provides users with the convenient.
Brief description of the drawings
Fig. 1 is a kind of the first preferred embodiment of battery energy density detection method based on mobile terminal of the present invention
Flow chart.
Fig. 2 is that a kind of the second preferred application of battery energy density detecting system based on mobile terminal of the present invention is implemented
The modular structure block diagram of example.
Fig. 3 is that a kind of the second preferred application of battery energy density detecting system based on mobile terminal of the present invention is implemented
The current detection module structure chart of example.
Fig. 4 is that a kind of the second preferred application of battery energy density detecting system based on mobile terminal of the present invention is implemented
The voltage comparison module structure chart of example.
Fig. 5 is that a kind of the second preferred application of battery energy density detection method based on mobile terminal of the present invention is implemented
The flow chart of example.
Fig. 6 is a kind of the first preferred embodiment of battery energy density detecting system based on mobile terminal of the present invention
Functional schematic block diagram.
Embodiment
To make the objects, technical solutions and advantages of the present invention clearer, clear and definite, develop simultaneously embodiment pair referring to the drawings
The present invention is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and without
It is of the invention in limiting.
A kind of battery energy density detection method based on mobile terminal described in first embodiment of the invention, such as Fig. 1 institutes
Show, including：
Step S100, mobile terminal be stored in advance in battery energy density be reduced to predetermined value need change battery when, no
With the threshold voltage corresponding to the different discharge currents under battery electric quantity percentage.
When it is implemented, battery is after the complete charge and discharge of certain number of times, its performance can decline, and be embodied directly in electricity
The energy density in pond can be reduced；Therefore, mobile terminal manufacturer to institute's standard configuration battery by the complete charge and discharge of certain number of times until
The energy density of the battery has been lowered to the level for needing to remind user to change battery；Now, by the adjustable resistance of battery external one
The resistance of value, in each electricity（Cap）Under, adjusting the resistance makes battery discharge current（Ib）It is excellent to be measured once every 50mA
Choosing so that a battery maximum discharge current is 1500 mA as an example, i.e., since 0mA, 50mA, 100mA ..., 1500mA, so
The voltage of battery feeder ear is recorded afterwards, and is recorded.It is wherein, described that " mobile terminal manufacturer is to institute's standard configuration battery by certain
The complete charge and discharge of number of times need to remind the level of user's replacing battery until the energy density of the battery has been lowered to ", that is, fill,
Discharge time need to be provided by battery supplier；Specific computational methods are as follows：
Step S101, the charge and discharge number of times for providing one piece of new battery according to battery supplier carry out the filling of certain number of times,
Electric discharge, makes the energy density of battery have been lowered to the level for needing to remind user to change battery；
Step S102, the resistance of an adjustable resistance connected with ammeter, be then attached to this block battery positive pole,
Negative pole；
Step S103, battery electric quantity be 0% when, adjusting resistance values, make ammeter registration be 50mA, then measure electricity
Cell voltage is simultaneously inserted in Cap=0%, the corresponding threshold voltage Vrg2th of Ib=50mA pressures；Can be by when Ib is more than zero
This method obtains Vrg2th, when Ib is zero, only need to when battery is not connected with anything direct measurement battery electricity
Pressure.
By above-mentioned computational methods, obtain under battery electric quantity percentage, the corresponding threshold voltage of different discharge currents, such as
Shown in table 1：
Table 1
| 0mA | 50mA | 100mA | …… | 600mA | …… | 1500mA | |
| 0% | 3.4V | 3.38V | 3.36V | 3.32V | 3.28V | ||
| 1% | 3.5V | 3.49V | 3.45V | 3.4V | 3.36V | ||
| 2% | 3.6V | 3.58V | 3.55V | 3.52V | 3.5V | ||
| …… | |||||||
| 66% | 3.92V | 3.88V | 3.86V | 3.84V | 3.81V | ||
| …… | |||||||
| 99% | 4.3V | 4.25V | 4.21V | 4.18V | 4.12V | ||
| 100% | 4.33V | 4.28V | 4.26V | 4.23V | 4.18V |
Step S200, mobile terminal are every the one first scheduled time real-time battery electric quantity percentage of detection battery, electric discharge
Electric current and cell voltage, and judge whether discharge current is more than zero.
When it is implemented, after mobile terminal-opening, discharge current value Ib is detected at regular intervals, and we generally will be from
The electric current of battery outflow is referred to as positive current, and the electric current for flowing into battery is negative current, and corresponding, discharge current is when battery is powered
Just, i.e., more than zero.Battery current is less than or equal to zero for negative or zero, i.e. Ib, then illustrates that battery has neither part nor lot in power supply, in this case
It is not in the problem of cell density reduction is brought that mobile terminal is powered by charger, for example, power down is fast when cell density is low, but
Be not in such case if charger is connected；Only when Ib is more than zero, illustrate that battery participates in power supply, in this case
Just need detection cell density whether relatively low, therefore, this case need to only pay close attention to the situation that Ib is more than zero.When detecting discharge current Ib
Less than zero, do not deal with.
If step S300, detecting the discharge current more than zero, and within second scheduled time, what is detected is current
Cell voltage is both less than current battery charge percentage correspondence threshold voltage corresponding with present discharge electric current, then is judged as battery
Energy density is reduced.
When it is implemented, mobile terminal passes through the low and high level table for the output signal that comparative result is passed through into GPIO interface
Show, current battery level is less than threshold voltage, control GPIO interface output high level signal；Current battery level is more than threshold values electricity
Pressure, control GPIO interface is output as low level signal.And the prompting module of mobile terminal is formulated into rising edge, trailing edge
It is disconnected, when receiving rising edge interruption, timing is proceeded by, exceedes threshold value when the time（Such as 1 minute）When remind user's battery energy
Metric density reduction needs to change；When receiving trailing edge interruption, stop simultaneously resetting timing.In this way, prompting module
Current voltage was only all detected in continuous 1 minute just can change battery less than threshold voltage to user reminding, to prevent flase drop
Survey.
When it is implemented, step S300 is specifically included：
If step S310, detecting the discharge current more than zero, acquisition for mobile terminal present discharge electric current and battery electricity
Percentage is measured, and detects current battery level in real time；
Step S320, by current battery charge percentage, the corresponding cell voltage of discharge current with store before it is current
The corresponding threshold voltage of discharge current directly contrast or contrasted again after calculating；
If step S330, current voltage corresponding with battery electric quantity percentage is both less than corresponding within second scheduled time
Threshold voltage, then judge and point out battery energy density to reduce or prompting replacing battery.
When it is implemented, step S320 is specifically included：
Step S321, by the discharge current under current battery electric quantity percentage and the corresponding battery electric quantity hundred that stores before
The discharge current value divided than under carries out lookup contrast；
When it is implemented, the discharge current under current battery charge percentage is current discharge current.
If step S322, finding identical value, current cell voltage is directly carried out with corresponding threshold voltage straight
Connect contrast；
If step S323, searching less than corresponding value, by with described two neighbouring current values of discharge current and
Corresponding magnitude of voltage calculates the corresponding threshold voltage of the present discharge electric current, then with described cell voltage is calculated into what is obtained
Threshold voltage is contrasted.
The described battery energy density detecting system based on mobile terminal, wherein, if present discharge electric current is Ib, Ib1,
Ib2 is that immediate two of discharge current Ib under battery electric quantity percentage corresponding with storage is worth, and Ib2>Ib1, if
Vrg2th1, Vrg2th2 are respectively the corresponding threshold voltage of Ib1, Ib2, then the corresponding threshold voltages of present discharge electric current Ib
Vrg2th calculation formula is as follows：
。
The described battery energy density detecting system based on mobile terminal, wherein, first scheduled time is 1s, institute
Stated for second scheduled time for 1min, the predetermined value is corresponding battery energy density when battery need to be changed as defined in manufacturer
Value.
When battery energy density is reduced to a certain extent, battery of mobile phone occurs that battery power down is fast, the feelings shut down suddenly
Condition.Therefore the production firm of battery provides the threshold that corresponding battery energy density value is changed for needs after the certain number of times of battery discharge
Value.
It is real present invention also offers a kind of the second preferred application of battery energy density detecting system based on mobile terminal
The modular structure block diagram of example is applied, as shown in Fig. 2 mobile terminal of the present invention includes：
Current detection module 100, thresholding setup module 200, voltage comparison module 300, prompting module 400, battery 500.
Current detection module 100, the module is used for measuring the electric current for flowing through battery.Its internal circuit figure is specific such as Fig. 3 institutes
Show, the Rg in figure is the resistance that resistance is fixed, and its two ends connects Adc1 and Adc2 respectively, so as to obtain the voltage at resistance Rg two ends
Vrg1、Vrg2；The discharge current Ib of battery is obtained by below equation：
The current value Ib, if Ib is less than or equal to zero, illustrates that battery has neither part nor lot in power supply, in this case mobile whole
It is not in the problem of cell density reduction is brought that end is powered by charger, for example, power down is fast when cell density is low, but if even
It is not in then such case to connect charger；Only when Ib is more than zero, illustrate that battery participates in power supply, just need in this case
Detect whether cell density is relatively low, therefore, this case need to only pay close attention to the situation that Ib is more than zero；
The Adc is Analog-to-digital converter abbreviation, refers to analog-digital converter.
Thresholding setup module 200, when the current value Ib that current detection module 100 is obtained is more than zero, thresholding setup module
The 200 battery discharge current Ib obtained according to current detection module 100 set a threshold value Vrg2th, if cell voltage
Then illustrating that the energy density of the battery is too low less than Vrg2th needs prompting user to change battery.How according to current detecting mould
The battery discharge current Ib that block 100 is obtained sets a threshold value Vrg2thMake explanations below：Store in the terminal
There is a file, battery discharge current Ib, the present battery electricity that can be obtained in this document according to current detection module 100
Amount can be obtained by a threshold value Vrg2th；
It is as shown in Table 1 an example, can be according to Ib, current battery charge by this table（Lower abbreviation Cap）Obtain
Vrg2th ；In this table, corresponding Vrg2th when being each discharge current Ib under an electricity per a line, such as battery electricity in table
Measure for 66% when, Vrg2th=3.92V in Ib=0mA, Vrg2th=3.91V during Ib=50mA, Vrg2th during Ib=100mA=
3.89V ... ...；You can't help asking herein, the situation that Ib value is not marked in tableSuch as Cap=66% and Ib=36mA
When, Vrg2th is how many, is that to do an approximate formula as follows here：
In above formula, Ib1, Ib2 be in table with the value of Ib immediate two, and Ib2>Ib1, Vrg2th1, Vrg2th2 are table
Ib1, Ib2 corresponding Vrg2th values during middle Cap；Obtained for example, Cap=66% and Ib=36mA are calculated by above formula.
According to above-mentioned formula, in table the Ib of each row differ smaller Vrg2th precision it is higher, such as Ib in the table of example
Interval is 50mA, if converted to 10mA precision will be greatly improved.
Voltage comparison module 300, the module compares set by voltage Vrg2 and thresholding setup module 200 on present battery
Thresholding Vrg2th, if Vrg2 be less than Vrg2th, by comparative result reminder announced module.Specifically, as shown in figure 4, working as
When Vrg2 is less than Vrg2th, control GPIO output high level, when Vrg2 is more than or equal to Vrg2th, control GPIO exports low electricity
It is flat.
Prompting module 400, the module is formulated into rising edge, trailing edge and interrupted, and when receiving rising edge interruption, starts
Timing is carried out, exceedes threshold value when the time（Such as 1 minute）When remind the reduction of user battery energy density to need to change；When receiving down
Drop stops along when interrupting and resets timing.In this way, prompting module 400 only in continuous 1 minute voltage ratio compared with mould
Block 300 all detects Vrg2 just can change battery less than Vrg2th to user reminding, to prevent error detection.
Battery 500, for providing electricity to mobile terminal.
It is real present invention also offers a kind of the second preferred application of battery energy density detection method based on mobile terminal
The flow chart of example is applied, as shown in figure 5, comprising the following steps：
After step S10, mobile terminal-opening, the GPIO that voltage comparison module 300 is connected into prompting module 400 is configured to
Rise edge, trailing edge to interrupt, and be the timer of 1 second between one time-out of startup；
Step S20, judge whether timer is overtime, step S30 is performed if time-out；
Step S30, the electric current Ib of the detection battery output of current detection module 100, step is performed if Ib is more than zero
S40, step S20 is performed if Ib is less than or equal to zero；
Step S40, thresholding setup module 200 are searched in table according to Ib and current battery charge Cap and obtain thresholding
Vrg2th；
Step S50, prompting module 400, the rising edge for detecting GPIO are interrupted, and proceed by timing, exceed threshold when the time
Value（Such as 1 minute）When remind the reduction of user battery energy density to need to change；When receiving trailing edge interruption, stop simultaneously clear
Zero timing.
Wherein, step S50 and step S10 ~ step S40 is asynchronous, i.e., step S50 is connected by voltage comparison module 300
The GPIO of prompting module 400 rising edge or trailing edge triggering.
From above-described embodiment, the invention provides a kind of battery energy density detection method based on mobile terminal,
By the way that mobile terminal is used into discharge current corresponding cell voltage of the process measurement under different battery electric quantity percentages and pre-
The threshold voltage first stored is contrasted, if measuring current battery level in continuous time interval less than threshold voltage,
Battery of mobile terminal energy density reduces and points out user to change battery, provides users with the convenient.
Based on above-described embodiment, the present invention also provides the of a kind of battery energy density detecting system based on mobile terminal
The functional schematic block diagram of one preferred embodiment, as shown in fig. 6, system includes：
Measurement in advance and memory module 510, are stored in advance in battery energy density for mobile terminal and are reduced to predetermined value
The threshold voltage corresponding to different discharge currents when needing to change battery, under different battery electric quantity percentage；Specific as above institute
State.
Detection and judge module 520, for mobile terminal every the real-time battery electricity of one first scheduled time detection battery
Percentage, discharge current and cell voltage are measured, and judges whether discharge current is more than zero；As detailed above.
Compare with judge module 530, if for detecting the discharge current more than zero, and within second scheduled time,
The current battery level detected is both less than current battery charge percentage correspondence threshold voltage corresponding with present discharge electric current,
Then it is judged as battery energy density reduction；As detailed above.
The described battery energy density detecting system based on mobile terminal, wherein, it is described compare wrapped with judge module 530
Include：
Obtain and detection unit, if for detecting the discharge current more than zero, acquisition for mobile terminal present discharge electricity
Stream and battery electric quantity percentage, and current battery level is detected in real time；As detailed above.
Search comparison unit, for by current battery charge percentage, the corresponding cell voltage of discharge current with depositing before
The corresponding threshold voltage of present discharge electric current of storage directly contrast or contrasted again after calculating；As detailed above.
Judge and Tip element, if for current voltage corresponding with battery electric quantity percentage to be all within second scheduled time
Less than corresponding threshold voltage, then judge and point out battery energy density to reduce or prompting replacing battery；As detailed above.
The described battery energy density detecting system based on mobile terminal, wherein, the lookup comparison unit includes：
Searching unit, for the discharge current under current battery electric quantity percentage and the corresponding battery stored before is electric
The discharge current value measured under percentage carries out lookup contrast；As detailed above.
Direct comparison unit, if for finding identical value, current cell voltage is directly electric with corresponding threshold values
Pressure is directly contrasted；As detailed above.
Calculate and comparison unit, if for searching less than corresponding value, by neighbouring with described discharge current two
Current value and corresponding magnitude of voltage calculate the corresponding threshold voltage of the present discharge electric current, then by cell voltage with it is described
Obtained threshold voltage is calculated to be contrasted；As detailed above.
The described battery energy density detecting system based on mobile terminal, wherein, if present discharge electric current is Ib, Ib1,
Ib2 is that immediate two of discharge current Ib under battery electric quantity percentage corresponding with storage is worth, and Ib2>Ib1, if
Vrg2th1, Vrg2th2, it is respectively the corresponding threshold voltage of Ib1, Ib2, then corresponding threshold voltages of present discharge electric current Ib
Vrg2th calculation formula is as follows：
；
As detailed above.
The described battery energy density detecting system based on mobile terminal, wherein, it is characterised in that described first makes a reservation for
Time is 1s, and second scheduled time is 1min, and the predetermined value is corresponding when battery need to be changed as defined in manufacturer
Battery energy density value；As detailed above.
In summary, the invention provides a kind of battery energy density detection method and system based on mobile terminal, side
Method includes：Mobile terminal is stored in advance in battery energy density and is reduced to predetermined value when needing to change battery, different battery electric quantity
The threshold voltage corresponding to different discharge currents under percentage；Mobile terminal is real-time every one first scheduled time detection battery
Battery electric quantity percentage, discharge current and cell voltage, and judge discharge current whether be more than zero；If detecting the electric discharge
Electric current is more than zero, and within second scheduled time, the current battery level detected is both less than current battery charge percentage pair
Should threshold voltage corresponding with present discharge electric current, then be judged as battery energy density reduction.The present invention can be by detecting battery
Energy density, reminds user to change battery in time, so as to prevent user when battery energy density is reduced to a certain extent
The problems such as using being shut down suddenly caused by low energy densities battery, provide users with the convenient.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can
To be improved or converted according to the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect scope.
Claims (10)
1. a kind of battery energy density detection method based on mobile terminal, it is characterised in that method includes：
A, mobile terminal are stored in advance in battery energy density and are reduced to predetermined value when needing to change battery, different battery electric quantity hundred
The threshold voltage corresponding to different discharge currents divided than under；
B, mobile terminal are every the one first scheduled time real-time battery electric quantity percentage of detection battery, discharge current and battery electricity
Pressure, and judge whether discharge current is more than zero；
C, if the discharge current is detected more than zero, and within second scheduled time, the current battery level detected is all small
In current battery charge percentage correspondence threshold voltage corresponding with present discharge electric current, then it is judged as that battery energy density drops
It is low；
The pre-storage method of threshold voltage is described in the step A：Institute's battery of mobile terminal is filled completely by pre-determined number, put
Electricity is reduced to predeterminated level until the energy density of battery, and battery external one can adjust to the resistance of resistance, in each battery electricity
Under amount, adjusting the resistance of the adjustable resistance makes battery discharge current be to be measured once every predetermined current value, and remembers simultaneously
The voltage of the lower battery feeder ear of record；
In the step C, if the discharge current is detected less than or equal to zero, without judging whether battery energy density drops
It is low.
2. the battery energy density detection method according to claim 1 based on mobile terminal, it is characterised in that the step
Rapid C is specifically included：
If C1, detecting the discharge current more than zero, acquisition for mobile terminal present discharge electric current and battery electric quantity percentage, and
Current battery level is detected in real time；
C2, by current battery charge percentage, the corresponding cell voltage of discharge current and the present discharge electric current pair stored before
The threshold voltage answered directly contrast or contrasted again after calculating；
If C3, current voltage corresponding with battery electric quantity percentage is both less than corresponding threshold voltage within second scheduled time,
Then judge and point out battery energy density to reduce or prompting replacing battery.
3. the battery energy density detection method according to claim 2 based on mobile terminal, it is characterised in that the step
Rapid C2 is specifically included：
C21, by the discharge current under current battery electric quantity percentage with the corresponding battery electric quantity percentage stored before
Discharge current value carries out lookup contrast；
If C22, finding identical value, current cell voltage is directly directly contrasted with corresponding threshold voltage；
If C23, searching less than corresponding value, by with described two neighbouring current values of discharge current and corresponding voltage
Value calculates the corresponding threshold voltage of the present discharge electric current, then cell voltage is entered with the obtained threshold voltage that calculates
Row contrast.
4. the battery energy density detection method according to claim 3 based on mobile terminal, it is characterised in that set current
Discharge current is Ib, and Ib1, Ib2 are immediate two values of discharge current Ib under battery electric quantity percentage corresponding with storage,
And Ib2>Ib1, if Vrg2th1, respectively Vrg2th2, the corresponding threshold voltage of Ib1, Ib2, then present discharge electric current Ib is corresponding
Threshold voltage Vrg2th calculation formula it is as follows：
。
5. the battery energy density detection method according to claim 1 based on mobile terminal, it is characterised in that described
One scheduled time was 1s, and second scheduled time is 1min, and the predetermined value is when battery need to change as defined in manufacturer
Corresponding battery energy density value.
6. a kind of battery energy density detecting system based on mobile terminal, it is characterised in that system includes：
In advance measurement and memory module, for mobile terminal be stored in advance in battery energy density be reduced to predetermined value need replacing
The threshold voltage corresponding to different discharge currents during battery, under different battery electric quantity percentages；
Detection and judge module, the real-time battery electric quantity percentage of battery is detected for mobile terminal every one first scheduled time
Than, discharge current and cell voltage, and judge whether discharge current is more than zero；
Compare and judge module, if for detecting the discharge current more than zero, and within second scheduled time, detect
Current battery level is both less than current battery charge percentage correspondence threshold voltage corresponding with present discharge electric current, then is judged as
Battery energy density is reduced；
The pre-storage method of the threshold voltage is：To institute's battery of mobile terminal by the complete charge and discharge of pre-determined number until battery
Energy density be reduced to predeterminated level, by battery external one can adjust resistance resistance, under each battery electric quantity, adjust institute
Stating the resistance of adjustable resistance makes battery discharge current be powered to be measured once every predetermined current value, and recording battery simultaneously
The voltage at end；
If it is described compare detect the discharge current less than or equal to zero with judge module, without judging battery energy density
Whether reduce.
7. the battery energy density detecting system according to claim 6 based on mobile terminal, it is characterised in that the ratio
Include compared with judge module：
Obtain and detection unit, if for detecting the discharge current more than zero, acquisition for mobile terminal present discharge electric current and
Battery electric quantity percentage, and current battery level is detected in real time；
Comparison unit is searched, for storing current battery charge percentage, discharge current corresponding cell voltage and before
The corresponding threshold voltage of present discharge electric current directly contrast or contrasted again after calculating；
Judge and Tip element, if within second scheduled time current voltage corresponding with battery electric quantity percentage be both less than
Corresponding threshold voltage, then judge and point out battery energy density to reduce or prompting replacing battery.
8. the battery energy density detecting system according to claim 7 based on mobile terminal, it is characterised in that described to look into
Comparison unit is looked for include：
Searching unit, for by the discharge current under current battery electric quantity percentage and the corresponding battery electric quantity hundred that stores before
The discharge current value divided than under carries out lookup contrast；
Direct comparison unit, if for finding identical value, current cell voltage is directly entered with corresponding threshold voltage
Row is directly contrasted；
Calculate and comparison unit, if for searching less than corresponding value, by with described two neighbouring electricity of discharge current
Flow valuve and corresponding magnitude of voltage calculate the corresponding threshold voltage of the present discharge electric current, then cell voltage is calculated with described
Obtained threshold voltage is contrasted.
9. the battery energy density detecting system according to claim 8 based on mobile terminal, it is characterised in that set current
Discharge current is Ib, and Ib1, Ib2 are immediate two values of discharge current Ib under battery electric quantity percentage corresponding with storage,
And Ib2>Ib1, if Vrg2th1, respectively Vrg2th2, the corresponding threshold voltage of Ib1, Ib2, then present discharge electric current Ib is corresponding
Threshold voltage Vrg2th calculation formula it is as follows：
。
10. the battery energy density detecting system according to claim 7 based on mobile terminal, it is characterised in that described
First scheduled time was 1s, and second scheduled time is 1min, and the predetermined value is that battery as defined in manufacturer needs to change
When corresponding battery energy density value.
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| TW535308B (en) * | 2000-05-23 | 2003-06-01 | Canon Kk | Detecting method for detecting internal state of a rechargeable battery, detecting device for practicing said detecting method, and instrument provided with said |
| CN101714771A (en) * | 2009-12-17 | 2010-05-26 | 杭州中恒电气股份有限公司 | Battery high-temperature charging protection control circuit |
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