CN106483462A - A kind of measuring method of battery charge and device - Google Patents
A kind of measuring method of battery charge and device Download PDFInfo
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- CN106483462A CN106483462A CN201510541198.9A CN201510541198A CN106483462A CN 106483462 A CN106483462 A CN 106483462A CN 201510541198 A CN201510541198 A CN 201510541198A CN 106483462 A CN106483462 A CN 106483462A
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Abstract
The invention discloses a kind of measuring method of battery charge and device, for solving the OCV method metering inaccurate problem of charge capacity.Method includes：After entering constant-current charging phase, using coulomb metering method, according to the battery electric quantity of the coulomb value currently recording and charging initial time, determine current battery charge；After entering constant voltage charging phase, according to current charging current, determine current battery charge.Because constant-current charging phase adopts coulomb metering method, both can ensure that the accuracy of the current electric quantity determined, the feature that the charging curve of coulomb metering method smooths can have been played again；After entering constant voltage charging phase, the linear relationship with charging current and current battery charge to calculate current battery charge, can reflect the actual electricity of present battery exactly, can ensure that the flatness of charging curve again.
Description
Technical field
The present invention relates to technical field of electronic equipment, particularly to a kind of measuring method of battery charge and
Device.
Background technology
At present, electronic equipment typically adopts lithium battery power supply, according to the characteristic of lithium battery, can be by lithium battery
A charge cycle be divided into trickle charge, constant-current charge and constant-voltage charge three phases.Three phases master
To be controlled by charging circuit (charger), detailed process is as shown in figure 1, with full piezoelectric voltage as 4.2V
Lithium battery as a example, its charging process includes：
The trickle charge stage：When cell voltage is less than 3.0V, charging circuit is according to default small current (
As be 100mA) be pre-charged；
Constant-current charging phase：When cell voltage is more than 3.0V, charging circuit can be according to default Constant Electric Current flow valuve
Battery is charged；
Constant voltage charging phase：After cell voltage increases to 4.2V, under the full piezoelectric voltage of 4.2V, charge electricity
Road gradually reduces charging current until reaching full electricity cut-off charging current.
Open-circuit voltage (Open Circuit Voltage, OCV) method is typically adopted to measure charge capacity at present.
The method calculates internal charging resistance first, then calculates battery open circuit voltage OCV by internal charging resistance, by
OCV looks into the OCV-SOC curve table prestoring to obtain current electric quantity (State of Charge, SOC).Adopt
Calculate charge capacity with OCV method to have a disadvantage that：
There is larger error in the OCV due to calculating, the SOC of the acquisition that leads to table look-up is inaccurate.Due to meter
There is larger error in the OCV obtaining, if the OCV calculating is too high, when the OCV calculating reaches
During 4.2V, now the actual OCV of battery is likely less than 4.2V, so leads to battery not really to be full of, shadow
Ring cruising time；If the OCV calculating is low, when the OCV calculating is less than 4.2V, now electricity
The actual OCV in pond may reach 4.2V, and continuing to charge is likely to result in the risk overcharging.Using OCV
Method needs every money battery is specially tested OCV-SOC curve table, and test OCV-SOC curve ratio is relatively time-consuming,
Efficiency is low.
Content of the invention
Embodiments provide a kind of measuring method of battery charge and device, for solving OCV
Method measures the inaccurate problem of charge capacity.
Embodiments provide a kind of measuring method of battery charge, including：Trickle charge rank
Section, constant-current charge rank and constant voltage charging phase；Wherein：
After entering constant-current charging phase, using coulomb metering method, according to the coulomb value currently recording and charging
The battery electric quantity of initial time, determines current battery charge；
After entering constant voltage charging phase, according to current charging current, determine current battery charge.
Preferably, the method also includes：In the trickle charge stage, using coulomb metering method, according to current
The coulomb value recording and the battery electric quantity of charging initial time, determine current battery charge.
Preferably, when entering constant voltage charging phase, according to equation below, determine current battery charge, bag
Include：
SOCcv(i)=a*i+b；
Wherein, SOCcvI () is current battery charge, i is current charging current；Coefficient a and coefficient b is root
According to the battery electric quantity when charging current entering during constant voltage charging phase and entrance constant voltage charging phase, Yi Ji electricity
During Chi Man electricity, corresponding cut-off charging current and corresponding battery electric quantity when reaching cut-off charging current determine.
Preferably, after determining current battery charge, the method also includes：
Determine weights；
According to weights, currently displaying electricity and current battery charge are weighted process, obtain current filter
Electricity；
According to current filter electricity, obtain the step-length that currently displaying electricity needs increase；
According to step-length and currently displaying electricity, shown electricity next time.
Preferably, trickle charge stage and/or constant-current charging phase, determine weights, including：According to current
Cell voltage and battery cutoff voltage, determine the weights of trickle charge stage and/or constant-current charging phase；
After entering constant voltage charging phase, determine weights, including：According to current charging current and the full electricity of battery
When cut-off charging current, determine the weights of constant voltage charging phase.
Preferably, trickle charge stage or constant-current charging phase, according to equation below, determines that trickle fills
Electric stage or the weights of constant-current charging phase：
Weight_cc=(BATvol_cur BATvol_terminal)/(A BATvol_terminal)；
Wherein, weight_cc is the weights of trickle charge stage or constant-current charging phase, BATvol_cur
For current battery level, BATvol_terminal is battery cutoff voltage, and A sets for constant voltage charging phase
Full piezoelectric voltage；
After entering constant voltage charging phase, according to equation below, determine the weights of constant voltage charging phase：
Weight_cv=(BATi_cur BATi_terminal)/(BATi_cc BATi_terminal)；
Wherein, weight_cv is the weights of constant voltage charging phase, and BATi_cur is current charging current,
Cut-off charging current during BATi_terminal electricity full for battery, BATi_cc is the electricity of constant-current charging phase
Stream.
Preferably, trickle charge stage or constant-current charging phase, according to equation below, to currently displaying electricity
Amount and current battery charge are weighted processing, and obtain current filter electricity：
SOCfilter_cur=SOC_cur* (1-weight_cc)+SOCcc_cur*weight_cc
Wherein, SOCfilter_cur is current filter electricity, and SOC_cur is currently displaying electricity, SOCcc_cur
For current battery charge, weight_cc is the weights of trickle charge stage or constant-current charging phase；
After entering constant voltage charging phase, according to equation below, currently displaying electricity and current battery charge are entered
Row weighting is processed, and obtains current filter electricity：
SOCfilter_cur=SOC_cur* (1-weight_cv)+SOCcv_cur*weight_cv
Wherein, weight_cv is the weights of constant voltage charging phase.
Preferably, according to current filter electricity, obtain the step-length that currently displaying electricity needs increase, including：
According to current filter electricity and last filtering electricity, determine middle display electricity；
Using the difference of middle display electricity and currently displaying electricity as step-length.
Preferably, trickle charge stage or constant-current charging phase, according to equation below, determines middle aobvious
Show electricity：
SOC1=g*BATvol_cur+d；
G=(A*k+b-SOC_last)/(A-BATvol_last)；
D=A*k+b-g*A；
K=(SOCfilter_cur-SOCfilter_last)/(BATvol_cur-BATvol_last)；
B=SOCfilter_cur-k*BATvol_cur；
Wherein, SOC1 is middle display electricity, and BATvol_cur is current battery level, BATvol_last
The full piezoelectric voltage setting for constant voltage charging phase for last cell voltage, A, SOC_last is last aobvious
Show electricity, SOCfilter_cur is current filter electricity, SOCfilter_last is last filtering electricity；
After entering constant voltage charging phase, according to equation below, determine middle display electricity：
SOC1=g*BATi_cur+d；
G=(BATi_terminal*k+b-SOC_last)/(BATi_terminal-BATi_last)；
D=BATi_terminal*k+b-g*BATi_terminal；
K=(SOCfilter_cur-SOCfilter_last)/(BATi_cur-BATi_last)；
B=SOCfilter_cur-k*BATi_cur；
Wherein, BATi_cur is current charging current, and BATi_last is last charging current,
Cut-off charging current during BATi_terminal electricity full for battery.
Preferably, according to step-length and currently displaying electricity, shown electricity next time, including：
If step-length be on the occasion of, determine show next time electricity be currently displaying electricity and step-length and；
If step-length is negative value, according to the corresponding relation of step-length set in advance and increment, determine that step-length corresponds to
Increment, and determine show next time electricity be currently displaying electricity with increment and.
Preferably, after entering constant voltage charging phase, the method also includes：
Current battery charge be more than or equal to set full electricity threshold value when, disconnect charging circuit, and detect work as
Front cell voltage；
If current battery level is more than or equal to the full piezoelectric voltage that constant voltage charging phase sets, and duration
More than the time interval setting, determine that current battery charge is full power consumption.
Preferably, the method also includes：
If current charge cycle detects after terminating that the current voltage of battery is the full piezoelectric voltage setting, rear
Continuous charge cycle is based on current expiration charging current to determine currently displaying electricity；
If current charge cycle detects after terminating that the current voltage of battery is less than the full piezoelectric voltage setting, ought
Front cut-off charging current reduces the adjustment amount setting, and after next charge cycle terminates, detection battery
Current voltage, until detect that the current voltage of battery is the full piezoelectric voltage or current expiration charging current setting
Less than or equal to the cut-off current threshold value setting, it is based on current expiration charging current in the subsequent charge cycle
Determine currently displaying electricity.
Embodiments provide a kind of measurement apparatus of battery charge, including：
First processing module, in constant-current charging phase, using coulomb metering device, according to currently recording
Coulomb value and charging initial time battery electric quantity, determine current battery charge；
Second processing module, for, after entering constant voltage charging phase, according to current charging current, determining
Current battery charge.
Preferably, this device also includes：
3rd processing module, in the trickle charge stage, using coulomb metering device, according to currently recording
Coulomb value and charging initial time battery electric quantity, determine current battery charge.
Preferably, described Second processing module, according to equation below, determines current battery charge, including：
SOCcv(i)=a*i+b；
Wherein, SOCcvI () is current battery charge, i is current charging current；Coefficient a and coefficient b is root
According to the battery electric quantity when charging current entering during constant voltage charging phase and entrance constant voltage charging phase, Yi Ji electricity
During Chi Man electricity, corresponding cut-off charging current and corresponding battery electric quantity when reaching cut-off charging current determine.
Preferably, this device also includes：
Fourth processing module, is used for determining weights；According to weights, to currently displaying electricity and present battery
Electricity is weighted processing, and obtains current filter electricity；According to current filter electricity, obtain currently displaying electricity
Amount needs the step-length increasing；According to step-length and currently displaying electricity, shown electricity next time.
Preferably, described fourth processing module specifically for：
In trickle charge stage and/or constant-current charging phase, according to current battery level and battery cutoff voltage,
Determine the weights of trickle charge stage and/or constant-current charging phase；
After entering constant voltage charging phase, charged according to cut-off when current charging current and the full electricity of battery electric
Stream, determines the weights of constant voltage charging phase.
Preferably, described fourth processing module specifically for：
In trickle charge stage or constant-current charging phase, according to equation below, determine the trickle charge stage
Or the weights of constant-current charging phase：
Weight_cc=(BATvol_cur BATvol_terminal)/(A BATvol_terminal)；
Wherein, weight_cc is the weights of trickle charge stage or constant-current charging phase, BATvol_cur
For current battery level, BATvol_terminal is battery cutoff voltage, and A sets for constant voltage charging phase
Full piezoelectric voltage；
After entering constant voltage charging phase, according to equation below, determine the weights of constant voltage charging phase：
Weight_cv=(BATi_cur BATi_terminal)/(BATi_cc BATi_terminal)；
Wherein, weight_cv is the weights of constant voltage charging phase, and BATi_cur is current charging current,
Cut-off charging current during BATi_terminal electricity full for battery, BATi_cc is the electricity of constant-current charging phase
Stream.
Preferably, described fourth processing module specifically for：
In trickle charge stage or constant-current charging phase, according to equation below, to currently displaying electricity with work as
Front battery electric quantity is weighted processing, and obtains current filter electricity：
SOCfilter_cur=SOC_cur* (1-weight_cc)+SOCcc_cur*weight_cc
Wherein, SOCfilter_cur is current filter electricity, and SOC_cur is currently displaying electricity, SOCcc_cur
For current battery charge, weight_cc is the weights of trickle charge stage or constant-current charging phase；
After entering constant voltage charging phase, according to equation below, currently displaying electricity and current battery charge are entered
Row weighting is processed, and obtains current filter electricity：
SOCfilter_cur=SOC_cur* (1-weight_cv)+SOCcv_cur*weight_cv
Wherein, weight_cv is the weights of constant voltage charging phase.
Preferably, according to current filter electricity, obtain currently displaying electricity needs to increase described fourth processing module
Long step-length, including：
According to current filter electricity and last filtering electricity, determine middle display electricity；
Using the difference of middle display electricity and currently displaying electricity as step-length.
Preferably, described fourth processing module specifically for：
In trickle charge stage or constant-current charging phase, according to equation below, determine middle display electricity：
SOC1=g*BATvol_cur+d；
G=(A*k+b-SOC_last)/(A-BATvol_last)；
D=A*k+b-g*A；
K=(SOCfilter_cur-SOCfilter_last)/(BATvol_cur-BATvol_last)；
B=SOCfilter_cur-k*BATvol_cur；
Wherein, SOC1 is middle display electricity, and BATvol_cur is current battery level, BATvol_last
The full piezoelectric voltage setting for constant voltage charging phase for last cell voltage, A, SOC_last is last aobvious
Show electricity, SOCfilter_cur is current filter electricity, SOCfilter_last is last filtering electricity；
After entering constant voltage charging phase, according to equation below, determine middle display electricity：
SOC1=g*BATi_cur+d；
G=(BATi_terminal*k+b-SOC_last)/(BATi_terminal-BATi_last)；
D=BATi_terminal*k+b-g*BATi_terminal；
K=(SOCfilter_cur-SOCfilter_last)/(BATi_cur-BATi_last)；
B=SOCfilter_cur-k*BATi_cur；
Wherein, BATi_cur is current charging current, and BATi_last is last charging current,
Cut-off charging current during BATi_terminal electricity full for battery.
Preferably, described fourth processing module, according to step-length and currently displaying electricity, is shown electricity next time
Amount, including：
If step-length be on the occasion of, determine show next time electricity be currently displaying electricity and step-length and；
If step-length is negative value, according to the corresponding relation of step-length set in advance and increment, determine that step-length corresponds to
Increment, and determine show next time electricity be currently displaying electricity with increment and.
Preferably, this device also includes：
Full electro-detection module, for, after entering constant voltage charging phase, being more than or equal in current battery charge
During the full electricity threshold value setting, disconnect charging circuit, and detect current battery level；If current battery level is big
In or be equal to constant voltage charging phase set full piezoelectric voltage, and be sustained for longer than set time interval,
Determine that current battery charge is full power consumption.
Preferably, this device also includes：
Cut-off charging current determining module, if detect the current electricity of battery for current charge cycle after terminating
Press the full piezoelectric voltage for setting, be then based on current expiration charging current to determine currently in the subsequent charge cycle
Display electricity；If current charge cycle detects after terminating that the current voltage of battery is less than the full electricity electricity setting
Pressure, current expiration charging current is reduced the adjustment amount setting, and after next charge cycle terminates, inspection
Survey the current voltage of battery, until detecting that the current voltage of battery is the full piezoelectric voltage or current expiration setting
Charging current is less than or equal to the cut-off current threshold value setting, and is based on current expiration in the subsequent charge cycle and fills
Electric current is determining currently displaying electricity.
In method and apparatus provided in an embodiment of the present invention, after entering constant-current charging phase, using coulomb metering
Method, according to the battery electric quantity of the coulomb value currently recording and charging initial time, determines present battery electricity
Amount；After entering constant voltage charging phase, near using current battery charge in constant voltage charging phase and charging current
Liny sexual intercourse, according to current charging current, determines current battery charge.Because constant-current charging phase is adopted
Use coulomb metering method, both can ensure that the accuracy of the current electric quantity determined, coulometer can be played again
The feature that the charging curve of amount method smooths；After entering constant voltage charging phase, with charging current and currently
The linear relationship of battery electric quantity, to calculate current battery charge, can relatively accurately reflect the reality of present battery
Border electricity, can ensure that the flatness of charging curve again.And, method provided in an embodiment of the present invention need not
Test OCV-SOC curve.
Brief description
Fig. 1 is the schematic diagram of the charging voltage in the charging process of lithium battery and charging current；
Fig. 2 is a kind of schematic diagram of the measuring method of battery charge provided in an embodiment of the present invention；
Fig. 3 is constant voltage charging phase in the embodiment of the present invention, battery electric quantity SOCcv and charging current i relation
Schematic diagram；
Fig. 4 is that in the embodiment of the present invention, trickle charge stage and constant-current charging phase are true with constant voltage charging phase
The curve chart of the actual battery electricity made；
Fig. 5 is the display electricity SOC curve chart of whole charge cycle in the embodiment of the present invention；
Fig. 6 is the schematic diagram of the measurement apparatus of the first battery charge provided in an embodiment of the present invention；
Fig. 7 is the schematic diagram of the measurement apparatus of second battery charge provided in an embodiment of the present invention；
Fig. 8 is the schematic diagram of the measurement apparatus of the third battery charge provided in an embodiment of the present invention；
Fig. 9 is the schematic diagram of the measurement apparatus of the 4th kind of battery charge provided in an embodiment of the present invention；
Figure 10 is the schematic diagram of the measurement apparatus of the 5th kind of battery charge provided in an embodiment of the present invention.
Specific embodiment
With reference to Figure of description, the embodiment of the present invention is described in further detail.It should be appreciated that herein
Described embodiment is merely to illustrate and explains the present invention, is not intended to limit the present invention.
A kind of measuring method of battery charge of the embodiment of the present invention, as shown in Fig. 2 the method includes：
Trickle charge stage, constant-current charge rank and constant voltage charging phase；Wherein：
After S21, entrance constant-current charging phase, using coulomb metering method, according to the coulomb value currently recording
With the battery electric quantity of charging initial time, determine current battery charge；
After S22, entrance constant voltage charging phase, according to current charging current, determine current battery charge.
In the embodiment of the present invention, constant-current charging phase, using coulomb metering method, according to the storehouse currently recording
Human relations value and the battery electric quantity of charging initial time, determine current battery charge；After entering constant voltage charging phase,
Using the linear approximate relationship of current battery charge in constant voltage charging phase and charging current, charged according to current
Electric current, determines current battery charge.Because constant-current charging phase adopts coulomb metering method, both can protect
Demonstrate,prove the accuracy of the current electric quantity determined, the spy that the charging curve of coulomb metering method smooths can be played again
Point；After entering constant voltage charging phase, the linear relationship with charging current and current battery charge to calculate
Current battery charge, can relatively accurately reflect the actual electricity of present battery, can ensure that charging is bent again
The flatness of line.And, method provided in an embodiment of the present invention need not test OCV-SOC curve.
In the embodiment of the present invention, all adopted with current battery charge, currently displaying electricity, current filter electricity etc.
Illustrate as a example being represented with the form of percentage ratio, for example, current battery charge is current battery charge
Actual value takes the percentage ratio of power consumption.But the present invention not to current battery charge, currently displaying electricity, when
The concrete representation of front filtering electricity etc. is defined, it would however also be possible to employ other forms represent, such as actual electricity
Value etc..
In the embodiment of the present invention, in a charge cycle, measurement moment of setting at each, determine and work as
Front battery electric quantity.
Illustrate, can be spaced with setting measurement, to determine the measurement moment in this charge cycle.For example,
Every measurement in 1 second once, after completing survey calculation, update the display electricity on electronic equipment.
In force, the embodiment of the present invention can not improve to the trickle charge stage, still adopts existing
Mode determines the current battery charge in trickle charge stage；As a kind of preferred implementation, the present invention is real
Apply example the trickle charge stage to be improved, that is,：
In the trickle charge stage, using coulomb metering method, initial according to the coulomb value currently recording and charging
The battery electric quantity in moment, determines current battery charge.
Based on any of the above-described embodiment, in S21 adopt coulomb metering method (also referred to as integration method), according to work as
Before the coulomb value that records and charging initial time battery electric quantity, determine current battery charge, specific as follows：
Trickle charge stage and/or constant-current charging phase, current battery charge SOCcc is existed with coulomb value Q
Following linear relationship：
SOCcc (Q)=rQ+SOCstart formula 1；
Wherein, SOCcc (Q) is the present battery electricity that trickle charge stage and/or constant-current charging phase calculate
Amount；Q is the coulomb value currently recording；R is 1/ battery total capacity；SOCstart is to charge with corresponding to when starting
Battery electric quantity.
If it should be noted that there is no hardware coulometer chip in electronic equipment, Software Integration can be adopted
Measure current coulomb value.
Based on any of the above-described embodiment, in S22 when entering constant voltage charging phase, according to equation below, really
Make current battery charge, including：
SOCcv(i)=a*i+b formula 2；
Wherein, SOCcvI () is current battery charge, i is current charging current；Coefficient a and coefficient b is root
According to the battery electric quantity when charging current entering during constant voltage charging phase and entrance constant voltage charging phase, Yi Ji electricity
During Chi Man electricity, corresponding cut-off charging current and corresponding battery electric quantity when reaching cut-off charging current determine.
Specifically, the charging current of constant voltage charging phase and time can approximate see linear, in order to enter
After constant voltage charging phase, allow battery electric quantity to increase linearly over time, charging current and battery electric quantity can be set up
Functional relationship, battery electric quantity SOCcv (i) and charging current i are regarded as linear approximate relationship.Enter constant voltage
Duan Hou, can pass through 2 points, that is, (current charging current, current battery charge) and (end charging current,
Corresponding battery electric quantity when reaching cut-off charging current) determining a and b in formula 2.
Preferably, using the method for self study, by least one charge cycle, when determining the full electricity of battery
Cut-off charging current, and in the subsequent charge cycle based on a determination that the cut-off charging current going out to determine currently shows
Show electricity.It is specially：
If current charge cycle detects after terminating that the current voltage of battery is the full piezoelectric voltage setting, rear
Continuous charge cycle is based on current expiration charging current to determine currently displaying electricity；
If current charge cycle detects after terminating that the current voltage of battery is less than the full piezoelectric voltage setting, ought
Front cut-off charging current reduces the adjustment amount setting, and after next charge cycle terminates, detection battery
Current voltage, until detect that the current voltage of battery is the full piezoelectric voltage or current expiration charging current setting
Less than or equal to the cut-off current threshold value setting, it is based on current expiration charging current in the subsequent charge cycle
Determine currently displaying electricity.
Illustrate, when current charging current reaches cut-off charging current, general battery OCV can reach
4.2V, arrives many moneys battery for compatible herein, prevents from overcharging, and can arrange according to the battery compared with low capacity, one
As be set to 0.05C, i.e. the 0.05 of battery capacity, such as 3000mAh, then C is 3000mA, 0.05C
For 150mA, can be higher for high capacity cell 0.05C, it is therefore assumed that enter full electro-detection for the first time finding
Cell voltage is not up to 4.2V, then in next charge cycle using cut-off charging current deduct less value as
New cut-off charging current, to calculate constant-voltage charge slope of a curve and side-play amount in this charge cycle with this.
So through multiple charge cycles it is possible to self study is to suitable cut-off charging current, and preserve cutting of obtaining
Only charging current, the calculating as charge cycle below.
In the embodiment of the present invention, cut-off charging current adopts self-learning method, by least one charge cycle,
Accurate cut-off current can be obtained, improve the compatibility to many moneys battery for the software.
Certainly, cut-off charging current can also be obtained by actual measurement, specially：With arbitrary charge cycle for surveying
In the amount cycle, when current battery charge is detected for 99%, measure current charging current, and this charging is electric
Stream is as cut-off charging current, and is calculated using this cut-off charging current in follow-up charge cycle.
Constant voltage charging phase, battery electric quantity SOCcv is with charging current i relation as shown in figure 3, being wherein to carry
The precision of high SOCcv, the value of the SOCcv obtaining is expanded 1000 times.
In the embodiment of the present invention, determine in trickle charge stage and constant-current charging phase and constant voltage charging phase
Actual battery electricity SOCcc-cv as shown in Figure 4.
Based on any of the above-described embodiment, the battery electric quantity SOCcc and currently displaying electricity SOC that S21 determines
Between, may have one between the battery electric quantity SOCcv that determines of S22 and currently displaying electricity SOC
Fixed deviation, in order to improve the smoothness of currently displaying electricity SOC curve, to SOC and SOCcc, SOC
Carry out first-order filtering process (i.e. weighting process) with SOCcv.It is specially：Also include after S22：
Determine weights；
According to weights, currently displaying electricity and current battery charge are weighted process, obtain current filter
Electricity；
According to current filter electricity, obtain the step-length that currently displaying electricity needs increase；
According to step-length and currently displaying electricity, shown electricity next time.
In the embodiment of the present invention, according to the weights determined, currently displaying electricity and current battery charge are entered
Row weighting is processed, and obtains current filter electricity；Further according to current filter electricity, obtaining currently displaying electricity needs
Step-length to be increased；Finally according to step-length and currently displaying electricity, shown electricity next time.Thus it is right
Whole section of charging curve is processed, and both ensure that the flatness of charging curve, and reflects current electricity exactly
The actual electricity in pond.
Carry out from trickle charge stage and/or constant-current charging phase, two stages of constant voltage charging phase separately below
Describe in detail.Because the trickle charge stage is also to be charged with constant electric current, the therefore trickle charge stage
Identical with the computational methods of constant-current charging phase.
First, trickle charge stage and/or constant-current charging phase.
Based on any of the above-described embodiment, trickle charge stage and/or constant-current charging phase, determine weights, bag
Include：According to current battery level and battery cutoff voltage, determine trickle charge stage and/or constant-current charge rank
The weights of section.
Specifically, trickle charge stage or constant-current charging phase, according to equation below, determines that trickle fills
Electric stage or the weights of constant-current charging phase：
Weight_cc=(BATvol_cur BATvol_terminal)/(A BATvol_terminal) formula 3A；
Wherein, weight_cc is the weights of trickle charge stage or constant-current charging phase, BATvol_cur
For current battery level, BATvol_terminal is battery cutoff voltage, and A sets for constant voltage charging phase
Full piezoelectric voltage.
It should be noted that the weights of trickle charge stage or constant-current charging phase are above-mentioned except adopting
Optimal way determines outer, can also adopt additive method, for example, the fixed configurations trickle charge stage and/or
The weights of constant-current charging phase, that is, the weights of trickle charge stage and/or constant-current charging phase are a fixation
Numerical value.
Based on any of the above-described embodiment, trickle charge stage or constant-current charging phase, according to equation below,
Currently displaying electricity and current battery charge are weighted process, obtain current filter electricity：
SOCfilter_cur=SOC_cur* (1-weight_cc)+SOCcc_cur*weight_cc formula 4A；
Wherein, SOCfilter_cur is current filter electricity, and SOC_cur is currently displaying electricity, SOCcc_cur
For current battery charge, weight_cc is the weights of trickle charge stage or constant-current charging phase.
Formula 4A reflects in trickle charge stage or constant-current charge section, when cell voltage is relatively low, currently
Filtering electricity accounted for currently displaying electricity SOC leading, so can ensure that display electric quantity curve flatness；
With the lifting of cell voltage, the proportion of currently displaying electricity SOC is gradually lowered, and is finally determined with S21
The current battery charge SOCcc going out accounts for leading, when actual cell voltage reaches what constant voltage charging phase set
During full piezoelectric voltage (as 4.2V), SOCfilter will adopt SOCcc completely.
Based on any of the above-described embodiment, according to current filter electricity, obtain what currently displaying electricity needs increased
Step-length, including：
According to current filter electricity and last filtering electricity, determine middle display electricity；
Using the difference of middle display electricity and currently displaying electricity as step-length.
Specifically, in order that currently displaying electricity SOC Step wise approximation filtered filtering electricity SOCfilter,
Determine that currently displaying electricity SOC needs to increase according to SOCfilter_cur and SOCfilter_last during poll every time
Long step-length, so that SOC will complete approaching of SOC to SOCfilter in the time interval setting, and
SOC and SOCfilter is finally made to be consistent.
In force, the time interval that trickle charge stage or constant-current charging phase set is as current point in time
Terminate (i.e. cell voltage reaches the full piezoelectric voltage of constant voltage charging phase setting, such as 4.2V) to constant-current charge.
First by the filtering electricity SOCfilter of trickle charge stage or constant-current charging phase and cell voltage
BATvol approximately regards linear relationship, record last filtering electricity SOCfilter_last and last battery as
Voltage BATvol_last, is denoted as point M (BATvol_last, SOCfilter_last)；Record current filtering
Electricity SOCfilter_cur and current battery level BATvol_cur, be denoted as point N (BATvol_cur,
SOCfilter_cur), straight line SOCfilter=k*v+b is determined by point M and point N, and obtain the value of k and b.
Wherein：
K=(SOCfilter_cur-SOCfilter_last)/(BATvol_cur-BATvol_last)；
B=SOCfilter_cur-k*BATvol_cur.
At the end of constant-current charging phase, namely cell voltage reaches the full piezoelectric voltage of constant voltage charging phase setting
During A (as 4200mv), corresponding display electricity is A*k+b, corresponding point P (A, A*k+b), and by point Q
(BATvol_last, SOClast) can determine that straight line SOC=g*v+d, and is calculated the value of g and d.
Wherein：
G=(M*A*k+b-SOC_last)/(M*A-BATvol_last)；
D=A*k+b-g*A.
Therefore, trickle charge stage or constant-current charging phase, the middle display electricity determined, such as formula
Shown in 5A：
SOC1=g*BATvol_cur+d formula 5A.
Preferably, according to step-length and currently displaying electricity, shown electricity next time, including：
If step-length be on the occasion of, determine show next time electricity be currently displaying electricity and step-length and；
If step-length is negative value, according to the corresponding relation of step-length set in advance and increment, determine that step-length corresponds to
Increment, and determine show next time electricity be currently displaying electricity with increment and.
Wherein, the corresponding increment of step-length can be 0.
2nd, constant voltage charging phase.
Based on any of the above-described embodiment, after entering constant voltage charging phase, determine weights, including：According to work as
Cut-off charging current when front charging current and the full electricity of battery, determines the weights of constant voltage charging phase.
Specifically, the weights of constant voltage charging phase according to equation below, are determined：
Weight_cv=(BATi_cur BATi_terminal)/(BATi_cc BATi_terminal) formula 3B；
Wherein, weight_cv is the weights of constant voltage charging phase, and BATi_cur is current charging current,
Cut-off charging current during BATi_terminal electricity full for battery, BATi_cc is the electric current of constant-current charging phase.
It should be noted that the weights of constant voltage charging phase are in addition to being determined using above-mentioned optimal way,
Additive method can also be adopted, for example, the weights of fixed configurations constant voltage charging phase, i.e. constant voltage charging phase
Weights be a fixation numerical value.
Based on any of the above-described embodiment, after entering constant voltage charging phase, according to equation below, to currently displaying
Electricity and current battery charge are weighted processing, and obtain current filter electricity：
SOCfilter_cur=SOC_cur* (1-weight_cv)+SOCcv_cur*weight_cv formula 4B；
After formula 4B reflects entrance constant voltage charging phase, when charging current is higher, current filter electricity is still
So accounted for currently displaying electricity SOC leading, with the reduction of charging current, show that electricity can be true with S22
The current battery charge SOCcv making accounts for leading, when charging current reaches cut-off charging current, by completely
Using SOCcv as currently displaying electricity.
Based on any of the above-described embodiment, according to current filter electricity, obtain what currently displaying electricity needs increased
Step-length, including：
According to current filter electricity and last filtering electricity, determine middle display electricity；
Using the difference of middle display electricity and currently displaying electricity as step-length.
In force, the time interval that constant voltage charging phase sets is current point in time and ties to constant-voltage charge
Restraint, namely charging current reaches cut-off charging current.First by the filtering electricity of constant voltage charging phase
SOCfilter is approximate with charging current BATi to regard linear relationship as.Record last filtering electricity
SOCfilter_last and last charging current BATi_last, are denoted as point A (BATi_last, SOCfilter_last),
Record current filter electricity SOCfilter_cur and current charging current BATi_cur, are denoted as point B
(SOCfilter_cur, BATi_cur), determines straight line SOCfilter=k*i+b by point A and point B, and
Obtain the value of k and b.Wherein：
K=(SOCfilter_cur-SOCfilter_last)/(BATi_cur-BATi_last)；
B=SOCfilter_cur-k*BATi_cur.
At the end of constant voltage charging phase, that is, reach corresponding display electricity during cut-off current BATi_terminal
Measure as BATi_terminal*k+b, corresponding point A (BATi_terminal, BATi_terminal*k+b), and by
Point B (BATi_last, SOC_last) is it may be determined that straight line SOC=g*v+d.Wherein：
G=(BATi_terminal*k+b-SOC_last)/(BATi_terminal-BATi_last)；
D=BATi_terminal*k+b-g*BATi_terminal；
Wherein, BATi_cur is current charging current, and BATi_last is last charging current, SOC_last
For last display electricity.
Therefore, after entering constant voltage charging phase, the centre determined shows electricity, as shown in formula 5B：
SOC1=g*BATi_cur+d formula 5B.
Based on any of the above-described embodiment, according to step-length and currently displaying electricity, shown electricity next time,
Including：
If step-length be on the occasion of, determine show next time electricity be currently displaying electricity and step-length and；
If step-length is negative value, according to the corresponding relation of step-length set in advance and increment, determine that step-length corresponds to
Increment, and determine show next time electricity be currently displaying electricity with increment and.
Based on any of the above-described embodiment, after entering constant voltage charging phase, the method also includes：
Current battery charge be more than or equal to set full electricity threshold value when, disconnect charging circuit, and detect work as
Front cell voltage；
If current battery level is more than or equal to the full piezoelectric voltage that constant voltage charging phase sets, and duration
More than the time interval setting, determine that current battery charge is full power consumption.
Specifically, the full electro-detection stage is in constant voltage charging phase, (i.e. current close to full electricity in battery electric quantity
Battery electric quantity is more than or equal to the full electricity threshold value setting) when, in time detection battery full power state, can be by
Charging control circuit charger disconnects, and now cell voltage can be approximately OCV, if battery electricity is detected
Pressure is more than or equal to the full piezoelectric voltage (as 4.2V) setting, and the persistent period is spaced (such as 1 for setting time
Minute) then it is assumed that the full electricity of battery, and make display electricity be 100%.Thereby may be ensured that battery is really full of,
Battery durable ability can be played to greatest extent with this, extend cruising time.
Through above-mentioned trickle charge stage, constant-current charging phase and constant voltage charging phase, whole charging can be drawn
The display electricity SOC curve chart in cycle, as shown in figure 5, being wherein the precision improving SOCcv, will
The value of the SOCcv arriving expands 1000 times.
Said method handling process can be realized with software program, and this software program can be stored in storage medium
In, when the software program of storage is called, execute said method step.
Based on same inventive concept, in the embodiment of the present invention, additionally provide a kind of measurement dress of battery charge
Put, because the principle of this device solve problem is similar to a kind of measuring method of battery charge, therefore should
The enforcement of device may refer to the enforcement of method, repeats no more in place of repetition.
Embodiments provide a kind of measurement apparatus of battery charge, as shown in fig. 6, this device
Including：
First processing module 61, for after entering constant-current charging phase, using coulomb metering device, according to
The coulomb value currently recording and the battery electric quantity of charging initial time, determine current battery charge；
Second processing module 62, for after entering constant voltage charging phase, according to current charging current, determines
Go out current battery charge.
Preferably, as shown in fig. 7, device provided in an embodiment of the present invention also includes：
3rd processing module 63, in the trickle charge stage, using coulomb metering device, surveying according to current
The coulomb value obtaining and the battery electric quantity of charging initial time, determine current battery charge.
Based on any of the above-described embodiment, Second processing module 62, according to equation below, determines present battery
Electricity, including：
SOCcv(i)=a*i+b；
Wherein, SOCcvI () is current battery charge, i is current charging current；Coefficient a and coefficient b is root
According to the battery electric quantity when charging current entering during constant voltage charging phase and entrance constant voltage charging phase, Yi Ji electricity
During Chi Man electricity, corresponding cut-off charging current and corresponding battery electric quantity when reaching cut-off charging current determine.
Based on any of the above-described embodiment, as shown in figure 8, this device also includes：
Fourth processing module 64, is used for determining weights；According to weights, to currently displaying electricity and current electricity
Pond electricity is weighted processing, and obtains current filter electricity；According to current filter electricity, obtain currently displaying
Electricity needs the step-length increasing；According to step-length and currently displaying electricity, shown electricity next time.
Preferably, fourth processing module 64 specifically for：
In trickle charge stage and/or constant-current charging phase, according to current battery level and battery cutoff voltage,
Determine the weights of trickle charge stage and/or constant-current charging phase；
After entering constant voltage charging phase, charged according to cut-off when current charging current and the full electricity of battery electric
Stream, determines the weights of constant voltage charging phase.
Preferably, fourth processing module 64 specifically for：
In trickle charge stage or constant-current charging phase, according to equation below, determine the trickle charge stage
Or the weights of constant-current charging phase：
Weight_cc=(BATvol_cur BATvol_terminal)/(A BATvol_terminal)；
Wherein, weight_cc is the weights of trickle charge stage or constant-current charging phase, BATvol_cur
For current battery level, BATvol_terminal is battery cutoff voltage, and A sets for constant voltage charging phase
Full piezoelectric voltage；
After entering constant voltage charging phase, according to equation below, determine the weights of constant voltage charging phase：
Weight_cv=(BATi_cur BATi_terminal)/(BATi_cc BATi_terminal)；
Wherein, weight_cv is the weights of constant voltage charging phase, and BATi_cur is current charging current,
Cut-off charging current during BATi_terminal electricity full for battery, BATi_cc is the electricity of constant-current charging phase
Stream.
Preferably, fourth processing module 64 specifically for：
In trickle charge stage or constant-current charging phase, according to equation below, to currently displaying electricity with work as
Front battery electric quantity is weighted processing, and obtains current filter electricity：
SOCfilter_cur=SOC_cur* (1-weight_cc)+SOCcc_cur*weight_cc
Wherein, SOCfilter_cur is current filter electricity, and SOC_cur is currently displaying electricity, SOCcc_cur
For current battery charge, weight_cc is the weights of trickle charge stage or constant-current charging phase；
After entering constant voltage charging phase, according to equation below, currently displaying electricity and current battery charge are entered
Row weighting is processed, and obtains current filter electricity：
SOCfilter_cur=SOC_cur* (1-weight_cv)+SOCcv_cur*weight_cv
Wherein, weight_cv is the weights of constant voltage charging phase.
Preferably, according to current filter electricity, obtain currently displaying electricity needs to increase fourth processing module 64
Long step-length, including：
According to current filter electricity and last filtering electricity, determine middle display electricity；
Using the difference of middle display electricity and currently displaying electricity as step-length.
Preferably, fourth processing module 64 specifically for：
In trickle charge stage or constant-current charging phase, according to equation below, determine middle display electricity：
SOC1=g*BATvol_cur+d；
G=(A*k+b-SOC_last)/(A-BATvol_last)；
D=A*k+b-g*A；
K=(SOCfilter_cur-SOCfilter_last)/(BATvol_cur-BATvol_last)；
B=SOCfilter_cur-k*BATvol_cur；
Wherein, SOC1 is middle display electricity, and BATvol_cur is current battery level, BATvol_last
The full piezoelectric voltage setting for constant voltage charging phase for last cell voltage, A, SOC_last is last aobvious
Show electricity, SOCfilter_cur is current filter electricity, SOCfilter_last is last filtering electricity；
After entering constant voltage charging phase, according to equation below, determine middle display electricity：
SOC1=g*BATi_cur+d；
G=(BATi_terminal*k+b-SOC_last)/(BATi_terminal-BATi_last)；
D=BATi_terminal*k+b-g*BATi_terminal；
K=(SOCfilter_cur-SOCfilter_last)/(BATi_cur-BATi_last)；
B=SOCfilter_cur-k*BATi_cur；
Wherein, BATi_cur is current charging current, and BATi_last is last charging current,
Cut-off charging current during BATi_terminal electricity full for battery.
Preferably, fourth processing module 64, according to step-length and currently displaying electricity, is shown electricity next time
Amount, including：
If step-length be on the occasion of, determine show next time electricity be currently displaying electricity and step-length and；
If step-length is negative value, according to the corresponding relation of step-length set in advance and increment, determine that step-length corresponds to
Increment, and determine show next time electricity be currently displaying electricity with increment and.
Based on any of the above-described embodiment, as shown in figure 9, this device also includes：
Full electro-detection module 65, for, after entering constant voltage charging phase, being more than in current battery charge or waiting
When the full electricity threshold value setting, disconnect charging circuit, and detect current battery level；If current battery level
The full piezoelectric voltage setting more than or equal to constant voltage charging phase, and be sustained for longer than between the time of setting
Every determining that current battery charge is full power consumption.
Based on any of the above-described embodiment, as shown in Figure 10, this device also includes：
Cut-off charging current determining module 66, if detect the current of battery after terminating for current charge cycle
Voltage be set full piezoelectric voltage, then the subsequent charge cycle be based on current expiration charging current to determine work as
Front display electricity；If current charge cycle detects after terminating that the current voltage of battery is less than the full electricity electricity setting
Pressure, current expiration charging current is reduced the adjustment amount setting, and after next charge cycle terminates, inspection
Survey the current voltage of battery, until detecting that the current voltage of battery is the full piezoelectric voltage or current expiration setting
Charging current is less than or equal to the cut-off current threshold value setting, and is based on current expiration in the subsequent charge cycle and fills
Electric current is determining currently displaying electricity.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know base
This creative concept, then can make other change and modification to these embodiments.So, appended right will
Ask and be intended to be construed to including preferred embodiment and fall into being had altered and changing of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these modification and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these changes and modification.
Claims (24)
1. a kind of measuring method of battery charge is it is characterised in that the method includes：Trickle charge
Stage, constant-current charging phase and constant voltage charging phase；Wherein：
After entering constant-current charging phase, using coulomb metering method, according to the coulomb value currently recording and charging
The battery electric quantity of initial time, determines current battery charge；
After entering constant voltage charging phase, according to current charging current, determine current battery charge.
2. the method for claim 1 is it is characterised in that the method includes：
In the trickle charge stage, using coulomb metering method, initial according to the coulomb value currently recording and charging
The battery electric quantity in moment, determines current battery charge.
3. the method for claim 1 it is characterised in that enter constant voltage charging phase when, according to
Equation below, determines current battery charge, including：
SOCcv(i)=a*i+b；
Wherein, SOCcvI () is current battery charge, i is current charging current；Coefficient a and coefficient b is root
According to the battery electric quantity when charging current entering during constant voltage charging phase and entrance constant voltage charging phase, Yi Ji electricity
During Chi Man electricity, corresponding cut-off charging current and corresponding battery electric quantity when reaching cut-off charging current determine.
4. the method as described in any one of claims 1 to 3 is it is characterised in that determine present battery electricity
After amount, the method also includes：
Determine weights；
According to weights, currently displaying electricity and current battery charge are weighted process, obtain current filter
Electricity；
According to current filter electricity, obtain the step-length that currently displaying electricity needs increase；
According to step-length and currently displaying electricity, shown electricity next time.
5. method as claimed in claim 4 is it is characterised in that trickle charge stage and/or constant-current charge
In the stage, determine weights, including：According to current battery level and battery cutoff voltage, determine that trickle fills
Electric stage and/or the weights of constant-current charging phase；
After entering constant voltage charging phase, determine weights, including：According to current charging current and the full electricity of battery
When cut-off charging current, determine the weights of constant voltage charging phase.
6. method as claimed in claim 5 is it is characterised in that trickle charge stage or constant-current charge
In the stage, according to equation below, determine the weights of trickle charge stage or constant-current charging phase：
Weight_cc=(BATvol_cur BATvol_terminal)/(A BATvol_terminal)；
Wherein, weight_cc is the weights of trickle charge stage or constant-current charging phase, BATvol_cur
For current battery level, BATvol_terminal is battery cutoff voltage, and A sets for constant voltage charging phase
Full piezoelectric voltage；
After entering constant voltage charging phase, according to equation below, determine the weights of constant voltage charging phase：
Weight_cv=(BATi_cur BATi_terminal)/(BATi_cc BATi_terminal)；
Wherein, weight_cv is the weights of constant voltage charging phase, and BATi_cur is current charging current,
Cut-off charging current during BATi_terminal electricity full for battery, BATi_cc is the electricity of constant-current charging phase
Stream.
7. method as claimed in claim 4 is it is characterised in that trickle charge stage or constant-current charge
In the stage, according to equation below, currently displaying electricity and current battery charge are weighted process, are worked as
Front filtering electricity：
SOCfilter_cur=SOC_cur* (1-weight_cc)+SOCcc_cur*weight_cc
Wherein, SOCfilter_cur is current filter electricity, and SOC_cur is currently displaying electricity, SOCcc_cur
For current battery charge, weight_cc is the weights of trickle charge stage or constant-current charging phase；
After entering constant voltage charging phase, according to equation below, currently displaying electricity and current battery charge are entered
Row weighting is processed, and obtains current filter electricity：
SOCfilter_cur=SOC_cur* (1-weight_cv)+SOCcv_cur*weight_cv
Wherein, weight_cv is the weights of constant voltage charging phase.
8. method as claimed in claim 4 is it is characterised in that according to current filter electricity, worked as
Front display electricity needs the step-length increasing, including：
According to current filter electricity and last filtering electricity, determine middle display electricity；
Using the difference of middle display electricity and currently displaying electricity as step-length.
9. method as claimed in claim 8 is it is characterised in that trickle charge stage or constant-current charge
In the stage, according to equation below, determine middle display electricity：
SOC1=g*BATvol_cur+d；
G=(A*k+b-SOC_last)/(A-BATvol_last)；
D=A*k+b-g*A；
K=(SOCfilter_cur-SOCfilter_last)/(BATvol_cur-BATvol_last)；
B=SOCfilter_cur-k*BATvol_cur；
Wherein, SOC1 is middle display electricity, and BATvol_cur is current battery level, BATvol_last
The full piezoelectric voltage setting for constant voltage charging phase for last cell voltage, A, SOC_last is last aobvious
Show electricity, SOCfilter_cur is current filter electricity, SOCfilter_last is last filtering electricity；
After entering constant voltage charging phase, according to equation below, determine middle display electricity：
SOC1=g*BATi_cur+d；
G=(BATi_terminal*k+b-SOC_last)/(BATi_terminal-BATi_last)；
D=BATi_terminal*k+b-g*BATi_terminal；
K=(SOCfilter_cur-SOCfilter_last)/(BATi_cur-BATi_last)；
B=SOCfilter_cur-k*BATi_cur；
Wherein, BATi_cur is current charging current, and BATi_last is last charging current,
Cut-off charging current during BATi_terminal electricity full for battery.
10. method as claimed in claim 4 is it is characterised in that according to step-length and currently displaying electricity,
Shown electricity next time, including：
If step-length be on the occasion of, determine show next time electricity be currently displaying electricity and step-length and；
If step-length is negative value, according to the corresponding relation of step-length set in advance and increment, determine that step-length corresponds to
Increment, and determine show next time electricity be currently displaying electricity with increment and.
After 11. methods as claimed in claim 1 or 2 are it is characterised in that enter constant voltage charging phase,
The method also includes：
Current battery charge be more than or equal to set full electricity threshold value when, disconnect charging circuit, and detect work as
Front cell voltage；
If current battery level is more than or equal to the full piezoelectric voltage that constant voltage charging phase sets, and duration
More than the time interval setting, determine that current battery charge is full power consumption.
12. methods as claimed in claim 3 are it is characterised in that the method also includes：
If current charge cycle detects after terminating that the current voltage of battery is the full piezoelectric voltage setting, rear
Continuous charge cycle is based on current expiration charging current to determine currently displaying electricity；
If current charge cycle detects after terminating that the current voltage of battery is less than the full piezoelectric voltage setting, ought
Front cut-off charging current reduces the adjustment amount setting, and after next charge cycle terminates, detection battery
Current voltage, until detect that the current voltage of battery is the full piezoelectric voltage or current expiration charging current setting
Less than or equal to the cut-off current threshold value setting, it is based on current expiration charging current in the subsequent charge cycle
Determine currently displaying electricity.
A kind of 13. measurement apparatus of battery charge are it is characterised in that this device includes：
First processing module, for after entering constant-current charging phase, using coulomb metering device, according to working as
Before the coulomb value that records and charging initial time battery electric quantity, determine current battery charge；
Second processing module, for, after entering constant voltage charging phase, according to current charging current, determining
Current battery charge.
14. devices as claimed in claim 13 are it is characterised in that this device also includes：
3rd processing module, in the trickle charge stage, using coulomb metering device, according to currently recording
Coulomb value and charging initial time battery electric quantity, determine current battery charge.
15. devices as claimed in claim 13 are it is characterised in that described Second processing module is according to such as
Lower formula, determines current battery charge, including：
SOCcv(i)=a*i+b；
Wherein, SOCcvI () is current battery charge, i is current charging current；Coefficient a and coefficient b is root
According to the battery electric quantity when charging current entering during constant voltage charging phase and entrance constant voltage charging phase, Yi Ji electricity
During Chi Man electricity, corresponding cut-off charging current and corresponding battery electric quantity when reaching cut-off charging current determine.
16. devices as described in any one of claim 13～15 are it is characterised in that this device also includes：
Fourth processing module, is used for determining weights；According to weights, to currently displaying electricity and present battery
Electricity is weighted processing, and obtains current filter electricity；According to current filter electricity, obtain currently displaying electricity
Amount needs the step-length increasing；According to step-length and currently displaying electricity, shown electricity next time.
17. devices as claimed in claim 16 are it is characterised in that described fourth processing module is specifically used
In：
In trickle charge stage and/or constant-current charging phase, according to current battery level and battery cutoff voltage,
Determine the weights of trickle charge stage and/or constant-current charging phase；
After entering constant voltage charging phase, charged according to cut-off when current charging current and the full electricity of battery electric
Stream, determines the weights of constant voltage charging phase.
18. devices as claimed in claim 17 are it is characterised in that described fourth processing module is specifically used
In：
In trickle charge stage or constant-current charging phase, according to equation below, determine the trickle charge stage
Or the weights of constant-current charging phase：
Weight_cc=(BATvol_cur BATvol_terminal)/(A BATvol_terminal)；
Wherein, weight_cc is the weights of trickle charge stage or constant-current charging phase, BATvol_cur
For current battery level, BATvol_terminal is battery cutoff voltage, and A sets for constant voltage charging phase
Full piezoelectric voltage；
After entering constant voltage charging phase, according to equation below, determine the weights of constant voltage charging phase：
Weight_cv=(BATi_cur BATi_terminal)/(BATi_cc BATi_terminal)；
Wherein, weight_cv is the weights of constant voltage charging phase, and BATi_cur is current charging current,
Cut-off charging current during BATi_terminal electricity full for battery, BATi_cc is the electricity of constant-current charging phase
Stream.
19. devices as claimed in claim 16 are it is characterised in that described fourth processing module is specifically used
In：
In trickle charge stage or constant-current charging phase, according to equation below, to currently displaying electricity with work as
Front battery electric quantity is weighted processing, and obtains current filter electricity：
SOCfilter_cur=SOC_cur* (1-weight_cc)+SOCcc_cur*weight_cc
Wherein, SOCfilter_cur is current filter electricity, and SOC_cur is currently displaying electricity, SOCcc_cur
For current battery charge, weight_cc is the weights of trickle charge stage or constant-current charging phase；
After entering constant voltage charging phase, according to equation below, currently displaying electricity and current battery charge are entered
Row weighting is processed, and obtains current filter electricity：
SOCfilter_cur=SOC_cur* (1-weight_cv)+SOCcv_cur*weight_cv
Wherein, weight_cv is the weights of constant voltage charging phase.
20. devices as claimed in claim 16 it is characterised in that described fourth processing module according to work as
Front filtering electricity, obtains the step-length that currently displaying electricity needs increase, including：
According to current filter electricity and last filtering electricity, determine middle display electricity；
Using the difference of middle display electricity and currently displaying electricity as step-length.
21. devices as claimed in claim 20 are it is characterised in that described fourth processing module is specifically used
In：
In trickle charge stage or constant-current charging phase, according to equation below, determine middle display electricity：
SOC1=g*BATvol_cur+d；
G=(A*k+b-SOC_last)/(A-BATvol_last)；
D=A*k+b-g*A；
K=(SOCfilter_cur-SOCfilter_last)/(BATvol_cur-BATvol_last)；
B=SOCfilter_cur-k*BATvol_cur；
Wherein, SOC1 is middle display electricity, and BATvol_cur is current battery level, BATvol_last
The full piezoelectric voltage setting for constant voltage charging phase for last cell voltage, A, SOC_last is last aobvious
Show electricity, SOCfilter_cur is current filter electricity, SOCfilter_last is last filtering electricity；
After entering constant voltage charging phase, according to equation below, determine middle display electricity：
SOC1=g*BATi_cur+d；
G=(BATi_terminal*k+b-SOC_last)/(BATi_terminal-BATi_last)；
D=BATi_terminal*k+b-g*BATi_terminal；
K=(SOCfilter_cur-SOCfilter_last)/(BATi_cur-BATi_last)；
B=SOCfilter_cur-k*BATi_cur；
Wherein, BATi_cur is current charging current, and BATi_last is last charging current,
Cut-off charging current during BATi_terminal electricity full for battery.
22. devices as claimed in claim 16 are it is characterised in that described fourth processing module is according to step
Length and currently displaying electricity, are shown electricity next time, including：
If step-length be on the occasion of, determine show next time electricity be currently displaying electricity and step-length and；
If step-length is negative value, according to the corresponding relation of step-length set in advance and increment, determine that step-length corresponds to
Increment, and determine show next time electricity be currently displaying electricity with increment and.
23. devices as described in claim 13 or 14 are it is characterised in that this device also includes：
Full electro-detection module, for, after entering constant voltage charging phase, being more than or equal in current battery charge
During the full electricity threshold value setting, disconnect charging circuit, and detect current battery level；If current battery level is big
In or be equal to constant voltage charging phase set full piezoelectric voltage, and be sustained for longer than set time interval,
Determine that current battery charge is full power consumption.
24. devices as claimed in claim 15 are it is characterised in that this device also includes：
Cut-off charging current determining module, if detect the current electricity of battery for current charge cycle after terminating
Press the full piezoelectric voltage for setting, be then based on current expiration charging current to determine currently in the subsequent charge cycle
Display electricity；If current charge cycle detects after terminating that the current voltage of battery is less than the full electricity electricity setting
Pressure, current expiration charging current is reduced the adjustment amount setting, and after next charge cycle terminates, inspection
Survey the current voltage of battery, until detecting that the current voltage of battery is the full piezoelectric voltage or current expiration setting
Charging current is less than or equal to the cut-off current threshold value setting, and is based on current expiration in the subsequent charge cycle and fills
Electric current is determining currently displaying electricity.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107703461A (en) * | 2017-11-20 | 2018-02-16 | 普联技术有限公司 | The battery electric quantity display control method and display control unit of a kind of electronic equipment |
| CN107768757A (en) * | 2017-10-20 | 2018-03-06 | 西北工业大学 | A kind of fast charge method of single lithium battery internal resistance compensation |
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| CN111025161A (en) * | 2020-01-10 | 2020-04-17 | 济南大学 | Lithium battery constant-current constant-voltage charging amount estimation method and terminal |
| CN111123127A (en) * | 2019-12-03 | 2020-05-08 | 浙江捷创智能技术有限公司 | Function fitting and electric quantity prediction method for lithium battery charging electric quantity |
| CN111426965A (en) * | 2020-05-15 | 2020-07-17 | 深圳英集芯科技有限公司 | Method for calculating electric quantity of battery |
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| CN112531847A (en) * | 2020-12-09 | 2021-03-19 | 上海深湾能源科技有限公司 | SOC display method and system of cascaded BMS and electronic equipment |
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| CN107768757A (en) * | 2017-10-20 | 2018-03-06 | 西北工业大学 | A kind of fast charge method of single lithium battery internal resistance compensation |
| CN107703461A (en) * | 2017-11-20 | 2018-02-16 | 普联技术有限公司 | The battery electric quantity display control method and display control unit of a kind of electronic equipment |
| CN107703461B (en) * | 2017-11-20 | 2019-12-10 | 普联技术有限公司 | battery power display control method and display control device of electronic equipment |
| CN109664302A (en) * | 2019-01-25 | 2019-04-23 | 北京猎户星空科技有限公司 | A kind of robot control method, device, medium and equipment |
| CN110794315A (en) * | 2019-08-06 | 2020-02-14 | 厦门亿联网络技术股份有限公司 | Method for detecting electric quantity of rechargeable battery |
| CN111123127A (en) * | 2019-12-03 | 2020-05-08 | 浙江捷创智能技术有限公司 | Function fitting and electric quantity prediction method for lithium battery charging electric quantity |
| CN111025161A (en) * | 2020-01-10 | 2020-04-17 | 济南大学 | Lithium battery constant-current constant-voltage charging amount estimation method and terminal |
| CN111025161B (en) * | 2020-01-10 | 2022-02-22 | 济南大学 | Lithium battery constant-current constant-voltage charging amount estimation method and terminal |
| CN111551862A (en) * | 2020-04-30 | 2020-08-18 | 珠海智融科技有限公司 | Method for measuring amount of electricity of battery, computer device, and computer-readable storage medium |
| CN111562507A (en) * | 2020-04-30 | 2020-08-21 | 歌尔科技有限公司 | Battery electric quantity display method and device, electronic equipment and storage medium |
| CN111551862B (en) * | 2020-04-30 | 2021-02-19 | 珠海智融科技有限公司 | Method for measuring amount of electricity of battery, computer device, and computer-readable storage medium |
| CN111562507B (en) * | 2020-04-30 | 2021-12-14 | 歌尔科技有限公司 | Battery electric quantity display method and device, electronic equipment and storage medium |
| CN111426965A (en) * | 2020-05-15 | 2020-07-17 | 深圳英集芯科技有限公司 | Method for calculating electric quantity of battery |
| CN111426965B (en) * | 2020-05-15 | 2022-05-06 | 深圳英集芯科技股份有限公司 | Method for calculating electric quantity of battery |
| WO2021238981A1 (en) * | 2020-05-26 | 2021-12-02 | Oppo广东移动通信有限公司 | Method and apparatus for determining display power, and electronic device and storage medium |
| CN112014749A (en) * | 2020-09-01 | 2020-12-01 | 珠海艾派克微电子有限公司 | Method and device for determining battery display electric quantity, chip and storage medium |
| CN112014749B (en) * | 2020-09-01 | 2023-06-27 | 极海微电子股份有限公司 | Method, device, chip and storage medium for determining battery display electric quantity |
| CN112531847A (en) * | 2020-12-09 | 2021-03-19 | 上海深湾能源科技有限公司 | SOC display method and system of cascaded BMS and electronic equipment |
| WO2022262583A1 (en) * | 2021-06-17 | 2022-12-22 | 深圳市道通科技股份有限公司 | Battery state of health calculation method and related device |
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