CN109884540A - A kind of lead-acid battery quantity measuring method - Google Patents
A kind of lead-acid battery quantity measuring method Download PDFInfo
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- CN109884540A CN109884540A CN201910205604.2A CN201910205604A CN109884540A CN 109884540 A CN109884540 A CN 109884540A CN 201910205604 A CN201910205604 A CN 201910205604A CN 109884540 A CN109884540 A CN 109884540A
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Abstract
The invention discloses a kind of lead-acid battery quantity measuring method, mainly comprise the steps that (a) calculates initial nominal electricity Qc0；(b) judge that battery is in charged state or discharge condition, if charged state carries out step (c), as discharge condition carries out step (d)；(c) include following sub-step: (c1) calculates Qa1 under charged state, substitutes into K1 wherein and carries out first time amendment；(c2) at least one check point charge value Qcr is selected, second is carried out and corrects, complete the measurement of lead-acid battery electricity under charged state；(d) include following sub-step: (d1) calculates Qa2 under discharge condition, substitutes into K2 wherein and carries out first time amendment；(d2) at least one check point charge value Qor is selected, second is carried out and corrects, complete the measurement of lead-acid battery electricity under discharge condition.The present invention improves the accuracy of nominal charge value, to more accurately indicate lead-acid battery charge value, completes the measurement of lead-acid battery electricity under charging, discharge condition.
Description
Technical field
The present invention relates to a kind of lead-acid battery more particularly to a kind of lead-acid battery quantity measuring methods.
Background technique
Electric vehicle market occupancy volume has reached 300,000,000, in the market mainly using lead-acid battery as electric vehicle main power source, mesh
The preceding all generally existing instrument electricity of big counted electric vehicle exhausted in the market, which is shown, is not allowed, and user does not know practical also how many electricity
The problem of, therefore, accurately battery capacity is measured most important, existing battery of electric vehicle electricity mainly passes through voltage
Electricity is calculated, but this Algorithm Error is big, while voltage calculation method is affected by temperature environment, cell degradation factor, meeting
Cause electricity to calculate error to increase, needs to make this improvement.
Summary of the invention
The present invention for electricity calculation method existing in the prior art by temperature environment, cell degradation factor influenced compared with
Greatly, caused electricity calculates the defects of error increases, user can not learn practical electricity, provides a kind of new lead-acid battery electricity
Measuring method.
In order to solve the above-mentioned technical problem, the invention is realized by the following technical scheme:
A kind of lead-acid battery quantity measuring method, comprising the following steps:
(a) battery floating voltage is acquired, according to the initial true electricity Qa0 of charge-discharge characteristic curve acquisition, calculates initial nominal
Electricity Qc0 is the rated capacity of battery its calculation formula is Qc0=Qa0/Qt, Qt；
(b) current data is acquired, judges that battery is in charged state or discharge condition, for example charged state then carries out step (c),
For example discharge condition then carries out step (d)；
(c) charged state electrical measurement, including following sub-step are carried out:
(c1) under the charged state, battery charge Ic, charging duration Tc, the charging current Ic > maximum charge are acquired
When current value Ic_max, starting overcharges alarm, and when the charging current Ic≤pairs of maximum charging current values Ic_max, it is electric to pass through charging
The integrating meter for flowing Ic and charging duration Tc calculates true electricity Qa1, the true electricity under the charged state under charged state
The first adjusted coefficient K 1 is substituted into Qa1, carry out first time amendment and calculates the nominal electricity Qc1 of the first charging, and described first repairs
Positive coefficient K1 includes charging temperature COEFFICIENT K a, charging charge packing coefficient Kb, the first cell degradation COEFFICIENT K c1；
(c2) after step (c1) measures the nominal electricity Qc1 of the first charging, charging voltage Vc is acquired, selectes charge-discharge characteristic curve
At least one upper check point voltage value Vct and when obtaining Vct corresponding check point charge value Qcr, the Vc >=Vct, passes through institute
The difference Qerr1 for stating the first charging nominal electricity Qc1 and Qcr is corrected for the second time and to calculate the second charging nominally electric
It measures Qc2, measures the correction value of nominal electricity under charged state, i.e., the measurement of lead-acid battery electricity under completion charged state；
(d) discharge condition electrical measurement, including following sub-step are carried out:
(d1) under the discharge condition, acquisition battery discharge current Iout, electric discharge duration Tout, the Iout > maximum electric discharge electricity
When flow valuve Iout_max, starting over-discharge alarm when the Iout≤maximum discharge current value Iout_max, passes through discharge current
The integrating meter of Iout and electric discharge duration Tout calculate true electricity Qa2, the true electricity under the discharge condition under discharge condition
The second adjusted coefficient K 2 is substituted into Qa2, carry out first time amendment and calculates the nominal electricity Qc4 of the first electric discharge, and described second repairs
Positive coefficient K2 includes that discharge temp COEFFICIENT K d, discharge charge enliven COEFFICIENT K e, the second cell degradation COEFFICIENT K c2；
(d2) after step (d1) measures the nominal electricity Qc4 of the first electric discharge, discharge voltage Vo is acquired, selectes charge-discharge characteristic curve
At least one upper check point voltage value Vot and when obtaining Vot corresponding check point charge value Qor, the Vo≤Vot, passes through institute
The difference Qerr2 for stating the first electric discharge nominal electricity Qc4 and Qor is corrected for the second time and to calculate the second electric discharge nominally electric
It measures Qc5, measures the correction value of nominal electricity under discharge condition, i.e., the measurement of lead-acid battery electricity under completion discharge condition.
Step (a) is used to calculate the initial nominal electricity of battery, carries out convenient for initial quantity of electricity of the user to battery pre-
Estimate, wherein initial true electricity Qa0 is the initial true electricity of battery, initial nominal electricity Qc0 is with the formal notation of percentage
The electricity of battery, user estimate battery capacity by initial nominal electricity Qc0 realization, and step (b) is for passing through acquisition
The battery data arrived judges that battery is in charged state or discharge condition, and wherein battery data includes size of current and electricity
Direction is flowed, the electrical measurement of charged state or the electrical measurement of discharge condition are carried out convenient for the later period, step (c) is used for charging shape
Battery capacity under state measures, including sub-step (c1), sub-step (c2), and sub-step (c1) is by judging charging current Ic
Guarantee the safety of battery charging with the relative size of pairs of maximum charging current values Ic_max to avoid over-charging of battery, and by first
Adjusted coefficient K 1 substitutes into true electricity Qa1 under charged state and the nominal electricity Qc1 of revised first charging for the first time is calculated,
First adjusted coefficient K 1 includes charging temperature COEFFICIENT K a, charging charge packing coefficient Kb, the first cell degradation COEFFICIENT K c1, wherein
The influence that charging temperature COEFFICIENT K a is used to cut down environment temperature and battery self-temperature measures battery capacity, charging charge storage
Coefficient Kb is used to generate loss to charging current and inside battery reason and be modified, and the first cell degradation COEFFICIENT K c1 is used
In cutting down the decline of battery capacity caused by cell degradation, corresponding display electricity is made to be unable to reach the error of rated value, sub-step
(c2) for being corrected and being calculated the nominal electricity Qc2 of the second charging for the second time, pass through at least one check point voltage value Vct
The difference of corresponding check point charge value Qcr and the first nominal electricity Qc1 of charging is modified the first nominal electricity Qc1 of charging
And the nominal electricity Qc2 of the second charging is calculated, the fineness of battery capacity measurement is further increased, the measurement of battery capacity is completed
Afterwards, user obtains the plumbic acid under charged state by the value of the nominal electricity Qc1 of the first charging, the second nominal electricity Qc2 of charging
Battery capacity.
Step (d) is used to measure the battery capacity under discharge condition, including sub-step (d1), sub-step (d2),
Sub-step (d1) passes through the relative size for judging discharge current Iout Yu maximum discharge current value Iout_max, to avoid battery mistake
It puts, guarantees the safety of battery discharge, and the second adjusted coefficient K 2 is substituted into true electricity Qa2 under discharge condition and is calculated the
The first nominal electricity Qc4 of electric discharge after primary amendment simultaneously, the second adjusted coefficient K 2 are living including discharge temp COEFFICIENT K d, discharge charge
Jump COEFFICIENT K e, the second cell degradation COEFFICIENT K c2, and wherein discharge temp COEFFICIENT K d is for cutting down environment temperature and battery self-temperature
Influence to battery capacity measurement, discharge charge enliven COEFFICIENT K e for generating damage to discharge current size and inside battery reason
Consumption is modified, and the second cell degradation COEFFICIENT K c2 makes corresponding display for cutting down the decline of battery capacity caused by cell degradation
Electricity is unable to reach the error of rated value, and sub-step (d2) is for being corrected for the second time and calculating the nominal electricity of the second electric discharge
Qc5, by the difference of the nominal electricity Qc4 of the electric discharge of the corresponding check point electricity Qor of at least one check point Vot and first to the
The one nominal electricity Qc4 of electric discharge is modified and calculates the nominal electricity Qc5 of the second electric discharge, further increases battery capacity measurement
Fineness, after the measurement for completing battery capacity, user passes through the nominal electricity Qc4 of the first electric discharge, the second nominal electricity Qc5 of electric discharge
Value, obtain the battery capacity under discharge condition.
The present invention is by being added under the first adjusted coefficient K 1, the second adjusted coefficient K 2 realization charged state, under discharge condition
The first time amendment of nominal electricity reduces temperature, electric current and battery itself factor, cell degradation degree to the shadow of nominal charge value
It rings, enables nominal electricity with battery capacity in stable linear relationship, so that nominal electricity be enable accurately to indicate lead
The value of sour battery capacity, then by the corresponding charge value of at least one check point on selected charge-discharge characteristic curve to nominal electricity
It carries out second to correct, further increases the accuracy of nominal charge value, thus more accurately indicate lead-acid battery charge value,
Complete under charged state, under discharge condition lead-acid battery electricity measurement.
Preferably, a kind of lead-acid battery quantity measuring method described above, in the step (c1), battery temperature is acquired
It spends and passes through to table look-up and obtain the corresponding charging temperature COEFFICIENT K a of the battery temperature, measure true electricity under the charged state
Maximum value Qamax1, the minimum value Qamin1 of Qa1, and by being filled described in the maximum value Qamax1, minimum value Qamin1 calculating
Electric charge storage coefficient Kb, its calculation formula is Kb=(Qamax1-Qamin1)/Qt, the charging mark measured by previous moment
The ratio of electricity Qc3 and Qt is claimed to obtain the first cell degradation COEFFICIENT K c1, the calculating of the nominal electricity Qc1 of first charging
Formula are as follows:Dt is charging duration Tc.
Corresponding charging temperature COEFFICIENT K a under varying environment temperature, battery temperature is obtained by tabling look-up, can be guaranteed not
Charging temperature COEFFICIENT K a is to the correction effect of nominal electricity, charging charge packing coefficient Kb under same environment temperature, battery temperature
Maximum value Qamax1 and the difference of minimum value Qamin1 and the ratio of Qt, wherein minimum value Qamin1 is 0, maximum value Qamax1
For the maximum charge electricity of battery, in battery charging process, battery can generate additional kwh loss, charging charge storage system
The error that number Kb can cut down aforementioned kwh loss bring electrical measurement in different time points, can measure in measurement process
The nominal electricity of the charging at current time out, the first cell degradation COEFFICIENT K c1 pass through the nominal electricity Qc3 of charging that previous moment measures
It is measured with the ratio of Qt, in use, battery will appear aging to battery, and therefore electricity can also be affected, the first electricity
Pond aging coefficient Kc1 can reduce the error of cell degradation bring battery capacity measurement, and the first nominal electricity Qc1 of charging passes through
The integral calculation electricity of electric current and time, while charging temperature COEFFICIENT K a, charging charge packing coefficient Kb, first being added wherein
Cell degradation COEFFICIENT K c1 is calculated, and measurement error can be reduced.
Preferably, a kind of lead-acid battery quantity measuring method described above, in the step (c2), the check point
When voltage value Vct is maximum charging voltage value Vc_max, corresponding check point electricity is the maximum of true electricity under charged state
Value Qamax1.
When check point electricity is maximum charging voltage value Vc_max, battery is filled with electricity maximum, the charging accumulated at this time
Electricity is the maximum value Qamax1 of true electricity Qa under charged state.
Preferably, a kind of lead-acid battery quantity measuring method described above, in the step (d1), battery temperature is acquired
It spends and passes through to table look-up and obtain the corresponding discharge temp COEFFICIENT K d of the battery temperature, measure true electricity under the discharge condition
Maximum value Qamax2, the minimum value Qamin2 of Qa2, and by the maximum value Qamax2 of electricity true under the discharge condition, most
Small value Qamin2 calculates the discharge charge and enlivens COEFFICIENT K e, and its calculation formula is Ke=(Qamax2- Qamin2)/Qt, pass through
The ratio of the nominal electricity Qc6 and Qt of electric discharge of previous moment measurement obtains the second cell degradation COEFFICIENT K c2, and described first puts
The calculation formula of electric nominal electricity Qc4 are as follows:Dt is electric discharge duration Tout.
Corresponding discharge temp COEFFICIENT K d under varying environment temperature, battery temperature is obtained by tabling look-up, can be guaranteed not
Same environment temperature, battery temperature transfer electrical temperature coefficient Kd to the correction effect of nominal electricity, and discharge charge enlivens COEFFICIENT K e and is
Maximum value Qamax2 and the difference of minimum value Qamin2 and the ratio of Qt, wherein maximum value Qamax2 is the rated capacity of battery
Qt, minimum value Qamin2 reaches battery capacity when the minimum discharge voltage of battery, and in battery discharge procedure, battery can be generated
Additional kwh loss, discharge charge, which enlivens COEFFICIENT K e, can cut down the error of aforementioned kwh loss bring electrical measurement,
In measurement process, in different time points, the nominal electricity of electric discharge at current time can be measured, the second cell degradation COEFFICIENT K c2 is logical
The ratio for crossing the nominal electricity Qc6 and Qt of electric discharge of previous moment measurement measures, and in use, battery will appear always battery
Change, therefore electricity can also be affected, the second cell degradation COEFFICIENT K c2 can reduce the survey of cell degradation bring battery capacity
The error of amount, the first nominal electricity Qc4 of electric discharge pass through the integral calculation electricity of electric current and time, while electric discharge temperature being added wherein
Degree COEFFICIENT K d, discharge charge enlivens COEFFICIENT K e, the second cell degradation COEFFICIENT K c2 is calculated, and can reduce measurement error.
Preferably, a kind of lead-acid battery quantity measuring method described above, in the step (d2), the check point
When voltage value Vot is minimum discharge voltage value Vo_min, corresponding check point electricity is the minimum of true electricity under discharge condition
Value Qamin2.
When check point electricity is minimum discharge voltage value Vo_min, battery releases electricity maximum, at this time the residue electricity of battery
Amount is the minimum value Qamin2 of true electricity Qa2 under discharge condition.
Preferably, a kind of lead-acid battery quantity measuring method described above, in the step (c2), 4 corrections are taken
Point be Vct1, Vct2, Vct3, Vct4 and according to charge-discharge characteristic curve determine check point charge value be Qcr1, Qcr2, Qcr3,
When Qcr4, the Vc >=Vct1, when Qerr1=Qc1-Qcr1, the Vc >=Vct2, Qerr1=Qc1-Qcr2, the Vc >=
When Vct3, when Qerr1=Qc1-Qcr3, the Vc >=Vct4, then Qerr1=Qc1-Qcr4 passes through Qerr1 and calculates second
Charge nominal electricity Qc2, and its calculation formula is the second nominal electricity of charging Dt is charging duration Tc, and wherein Ki is for electricity Ratio for error modification and by looking into
Table obtains.
Check point Vct1, Vct2, Vct3, Vct4 on charge-discharge characteristic curve are taken, and is obtained by charge-discharge characteristic curve
To check point corresponding charge value Qcr1, Qcr2, Qcr3, Qcr4, check point charge value and the first nominal electricity of charging are calculated
Four differences of Qc1 utilizeFormula the first nominal electricity Qc1 of charging is modified and is calculated
The second nominal electricity Qc2 of charging, wherein Ki numerical value is tabled look-up acquisitions, and value range is 0.8~1.
Preferably, a kind of lead-acid battery quantity measuring method described above, in the step (d2), 4 corrections are taken
Point be Vot1, Vot2, Vot3, Vot4 and according to charge-discharge characteristic curve determine check point charge value be Qor1, Qor2, Qor3,
When Qor4, the Vo≤Vot1, when Qerr2=Qc4-Qor1, the Vo≤Vot2, Qerr2=Qc4-Qor2, the Vo≤
When Vot3, when Qerr2=Qc4-Qor3, the Vo≤Vot4, then Qerr2=Qc4-Qor4 passes through Qerr2 and calculates second
Discharge nominal electricity Qc5, and its calculation formula is the second nominal electricity of electric discharge Dt is electric discharge duration Tout, and wherein Ki is electricity Ratio for error modification and leads to
Cross acquisition of tabling look-up.
Check point Vot1, Vot2, Vot3, Vot4 on charge-discharge characteristic curve are taken, and is obtained by charge-discharge characteristic curve
To check point corresponding charge value Qor1, Qor2, Qor3, Qor4, check point charge value and the first nominal electricity of electric discharge are calculated
Four differences of Qc4, the formula utilizedThe first nominal electricity Qc4 of electric discharge is modified and is calculated
The second nominal electricity Qc5 of electric discharge, wherein Ki numerical value is tabled look-up acquisitions, and value range is 0.8~1.
Detailed description of the invention
Fig. 1 is flow chart of the invention；
Fig. 2 is charge-discharge characteristic curve graph of the invention.
Specific embodiment
Present invention is further described in detail for 1-2 and specific embodiment with reference to the accompanying drawing, but they are not to this
The limitation of invention:
Embodiment 1
A kind of lead-acid battery quantity measuring method, comprising the following steps:
(a) battery floating voltage is acquired, according to the initial true electricity Qa0 of charge-discharge characteristic curve acquisition, calculates initial nominal
Electricity Qc0 is the rated capacity of battery its calculation formula is Qc0=Qa0/Qt, Qt；
(b) current data is acquired, judges that battery is in charged state or discharge condition, for example charged state then carries out step (c),
For example discharge condition then carries out step (d)；
(c) charged state electrical measurement, including following sub-step are carried out:
(c1) under the charged state, battery charge Ic, charging duration Tc, the charging current Ic > maximum charge are acquired
When current value Ic_max, starting overcharges alarm, and when the charging current Ic≤pairs of maximum charging current values Ic_max, it is electric to pass through charging
The integrating meter for flowing Ic and charging duration Tc calculates true electricity Qa1, the true electricity under the charged state under charged state
The first adjusted coefficient K 1 is substituted into Qa1, carry out first time amendment and calculates the nominal electricity Qc1 of the first charging, and described first repairs
Positive coefficient K1 includes charging temperature COEFFICIENT K a, charging charge packing coefficient Kb, the first cell degradation COEFFICIENT K c1；
(c2) after step (c1) measures the nominal electricity Qc1 of the first charging, charging voltage Vc is acquired, selectes charge-discharge characteristic curve
At least one upper check point voltage value Vct and when obtaining Vct corresponding check point charge value Qcr, the Vc >=Vct, passes through institute
The difference Qerr1 for stating the first charging nominal electricity Qc1 and Qcr is corrected for the second time and to calculate the second charging nominally electric
It measures Qc2, measures the correction value of nominal electricity under charged state, i.e., the measurement of lead-acid battery electricity under completion charged state；
(d) discharge condition electrical measurement, including following sub-step are carried out:
(d1) under the discharge condition, acquisition battery discharge current Iout, electric discharge duration Tout, the Iout > maximum electric discharge electricity
When flow valuve Iout_max, starting over-discharge alarm when the Iout≤maximum discharge current value Iout_max, passes through discharge current
The integrating meter of Iout and electric discharge duration Tout calculate true electricity Qa2, the true electricity under the discharge condition under discharge condition
The second adjusted coefficient K 2 is substituted into Qa2, carry out first time amendment and calculates the nominal electricity Qc4 of the first electric discharge, and described second repairs
Positive coefficient K2 includes that discharge temp COEFFICIENT K d, discharge charge enliven COEFFICIENT K e, the second cell degradation COEFFICIENT K c2；
(d2) after step (d1) measures the nominal electricity Qc4 of the first electric discharge, discharge voltage Vo is acquired, selectes charge-discharge characteristic curve
At least one upper check point voltage value Vot and when obtaining Vot corresponding check point charge value Qor, the Vo≤Vot, passes through institute
The difference Qerr2 for stating the first electric discharge nominal electricity Qc4 and Qor is corrected for the second time and to calculate the second electric discharge nominally electric
It measures Qc5, measures the correction value of nominal electricity under discharge condition, i.e., the measurement of lead-acid battery electricity under completion discharge condition.
Preferably, acquiring battery temperature in the step (c1) and obtaining the correspondence of the battery temperature by tabling look-up
Charging temperature COEFFICIENT K a, measure maximum value Qamax1, the minimum value Qamin1 of true electricity Qa1 under the charged state, and
The charging charge packing coefficient Kb is calculated by the maximum value Qamax1, minimum value Qamin1, its calculation formula is Kb=
(Qamax1-Qamin1)/Qt, the ratio of the nominal electricity Qc3 and Qt of charging measured by previous moment obtain first electricity
Pond aging coefficient Kc1, the calculation formula of the nominal electricity Qc1 of first charging are as follows: Kc1)*Ic
Dt, dt are charging duration Tc.
Preferably, in the step (c2), when the check point voltage value Vct is maximum charging voltage value Vc_max,
Corresponding check point electricity is the maximum value Qamax1 of true electricity under charged state.
Preferably, acquiring battery temperature in the step (d1) and obtaining the correspondence of the battery temperature by tabling look-up
Discharge temp COEFFICIENT K d, measure maximum value Qamax2, the minimum value Qamin2 of true electricity Qa2 under the discharge condition, and
The discharge charge, which is calculated, by maximum value Qamax2, the minimum value Qamin2 of electricity true under the discharge condition enlivens coefficient
Ke, its calculation formula is Ke=(Qamax2-Qamin2)/Qt, the nominal electricity Qc6 and Qt of electric discharge measured by previous moment
Ratio obtain the second cell degradation COEFFICIENT K c2, the calculation formula of the nominal electricity Qc4 of first electric discharge are as follows:Dt is electric discharge duration Tout.
Preferably, in the step (d2), when the check point voltage value Vot is minimum discharge voltage value Vo_min,
Corresponding check point electricity is the minimum value Qamin2 of true electricity under discharge condition.
Preferably, taking 4 check points for Vct1, Vct2, Vct3, Vct4 and according to charge and discharge in the step (c2)
Characteristic curve determines that check point charge value is Qcr1, Qcr2, Qcr3, Qcr4, when the Vc >=Vct1, Qerr1=Qc1-
When Qcr1, the Vc >=Vct2, when Qerr1=Qc1-Qcr2, the Vc >=Vct3, Qerr1=Qc1- Qcr3, the Vc >=
When Vct4, then Qerr1=Qc1-Qcr4 calculates the second nominal electricity Qc2 of charging by Qerr1, its calculation formula is second
Charge nominal electricityDt is charging duration Tc,
Wherein Ki is electricity Ratio for error modification and passes through acquisition of tabling look-up.
Preferably, taking 4 check points for Vot1, Vot2, Vot3, Vot4 and according to charge and discharge in the step (d2)
Characteristic curve determines that check point charge value is Qor1, Qor2, Qor3, Qor4, when the Vo≤Vot1, Qerr2=Qc4-
When Qor1, the Vo≤Vot2, when Qerr2=Qc4-Qor2, the Vo≤Vot3, Qerr2=Qc4- Qor3, the Vo≤
When Vot4, then Qerr2=Qc4-Qor4 calculates the second nominal electricity Qc5 of electric discharge by Qerr2, its calculation formula is second
Discharge nominal electricityDt is electric discharge duration
Tout, wherein Ki is electricity Ratio for error modification and passes through acquisition of tabling look-up.
Premenstruum (premenstrua) measurement, obtains following K1, K2 value enquiry form, wherein K1 includes charging temperature COEFFICIENT K a, charging charge
Packing coefficient Kb, the first cell degradation COEFFICIENT K c1, wherein K2 includes that discharge temp COEFFICIENT K d, discharge charge enliven COEFFICIENT K e,
Two cell degradation COEFFICIENT K c2.
Table 1, data under charged state:
| Serial number | CT | VC | V1 | V2 | V3 | V4 | Ic | Capacity | T0 | T1 | Ka | Kb | Kc1 |
| 1 | 00:00:00 | 48.000 | 12.000 | 12.000 | 12.000 | 12.000 | 3.000 | 10.000 | 25.0 | 26.0 | 0.97 | 0.90 | 0.95 |
| 2 | 00:00:01 | 48.000 | 12.000 | 12.000 | 12.000 | 12.000 | 3.000 | 10.000 | 25.0 | 26.0 | 0.97 | 0.90 | 0.95 |
| 3 | 00:00:02 | 48.000 | 12.000 | 12.000 | 12.000 | 12.000 | 3.000 | 10.000 | 25.0 | 26.0 | 0.97 | 0.90 | 0.95 |
Table 2, data under discharge condition:
| Serial number | CT | VC | V1 | V2 | V3 | V4 | Iout | Capacity | T0 | T1 | Kd | Ke | Kc2 |
| 1 | 00:00:00 | 48.000 | 12.000 | 12.000 | 12.000 | 12.000 | 5.000 | 20.000 | 25.0 | 26.0 | 0.85 | 0.93 | 0.95 |
| 2 | 00:00:01 | 48.000 | 12.000 | 12.000 | 12.000 | 12.000 | 5.000 | 20.000 | 25.0 | 26.0 | 0.85 | 0.93 | 0.95 |
| 3 | 00:00:02 | 48.000 | 12.000 | 12.000 | 12.000 | 12.000 | 5.000 | 20.000 | 25.0 | 26.0 | 0.85 | 0.93 | 0.95 |
CT is acquisition time in table, and VC is real-time battery voltage, and V1 is single-unit voltage 1, and V2 is single-unit voltage 2, and V3 is single
Voltage 3 is saved, V4 is single-unit voltage 4, and Iout is discharge current, and Ic is charging current, and Capacity is accumulative electricity, and T0 is ring
Border temperature, T1 are battery temperature, and Ka is charging temperature coefficient, and Kb is charging charge packing coefficient, and Kc1 is the first cell degradation system
Number, Kd are discharge temp coefficient, and Ke is that discharge charge enlivens coefficient, and Kc2 is the second cell degradation coefficient.
When measurement, the acquisition of advanced row data, acquisition data include battery temperature, cell voltage, battery current, then basis
Collected battery temperature inquiry table 1, table 2 obtain charging temperature COEFFICIENT K a, discharge temp COEFFICIENT K d, to charging temperature coefficient
Ka, discharge temp COEFFICIENT K d are preloaded, and battery floating voltage is acquired, according to the initial true electricity of charge-discharge characteristic curve acquisition
Amount Qa0 simultaneously calculates initial nominal electricity Qc0, and user obtains the electricity of the battery under original state by initial nominal electricity Qc0
The value of amount judges that battery is in charged state or discharge condition, fills further according to the size and Orientation of collected battery current
Under electricity condition, first judge whether battery overcharges, if overcharging, carries out overcharging alarm, guarantee the safety of battery charging, if non-mistake
It fills, by collected battery charge Ic, charging duration Tc, charging temperature COEFFICIENT K a, charging charge packing coefficient Kb, first
Cell degradation COEFFICIENT K c1 is substituted intoIn, the first time of nominal electricity is repaired in completion
Just and the nominal electricity Qc1 of the first charging is calculated, in battery charging process, the value of charging voltage Vc constantly changes, for into
Second amendment of the row to nominal electricity, in battery charging process, takes check point voltage value on charge-discharge characteristic curve
Vct1, Vct2, Vct3, Vct4, and obtain corresponding check point charge value Qcr1, Qcr2, Qcr3, Qcr4, can also take 2,
The integers check point voltage values such as 3,5,6 realize repeatedly correction, and in charging voltage Vc >=Vct1, the first charging is nominal
Electricity Qc1 and check point charge value Qcr1 has an error amount Qerr1, and charging voltage Vc takes different value, and electric with check point
Pressure value relatively after, can obtain multiple error amount Qerr1, be charged nominal electricity by the second nominal electricity Qc2=first of chargingThe value that second of amendment obtains the nominal electricity Qc2 of the second charging is carried out to nominal electricity, wherein
The value range of Ki value is 0.8~1, and during electrical measurement, the direct pre-add of Ki value is loaded into calculation procedure, to complete to mark
Claim second of amendment of electricity, so that user more accurately calculates true charge value by nominal charge value, thus
Complete the measurement to lead-acid battery electricity under charged state.
Under discharge condition, first judging battery, whether over-discharge carries out over-discharge alarm, guarantees the safety of battery discharge if over-discharge
Property, it is if non-over-discharge, collected battery discharge current Iout, electric discharge duration Tout, discharge temp COEFFICIENT K d, discharge charge is living
Jump COEFFICIENT K e, the second cell degradation COEFFICIENT K c2 substitutionIn, it completes to nominal
The first time of electricity is corrected and the nominal electricity Qc4 of the first electric discharge, in battery discharge procedure, the value of discharge voltage Vo is calculated
Constantly variation in battery discharge procedure, takes school on charge-discharge characteristic curve to carry out second of amendment to nominal electricity
Voltage value Vot1, Vot2, Vot3, Vot4 on schedule, and corresponding check point charge value Qor1, Qor2, Qor3, Qor4 are obtained, also
It can take the integers check point voltage values such as 2,3,5,6, realize repeatedly correction, in discharge voltage Vo≤Vot1, the
The nominal electricity Qc4 and check point charge value Qor1 of one electric discharge has an error amount Qerr2, and charging voltage Vc takes different value, and
After compared with check point voltage value, multiple error amount Qerr2 can be obtained, discharged by the second nominal electricity Qc5=first of electric discharge
Nominal electricitySecond of amendment is carried out to nominal electricity and obtains the nominal electricity Qc5's of the second electric discharge
Value, wherein the value range of Ki value is 0.8~1, and during electrical measurement, the direct pre-add of Ki value is loaded into calculation procedure, is
Second of amendment to nominal electricity is completed, so that user by nominal charge value, more accurately carries out true charge value
It calculates, to complete the measurement to lead-acid battery electricity under discharge condition.
The charge-discharge characteristic curve that the present invention loads in measurement process is attached drawing 2, is obtained by wherein charging voltage value
The charge capacity value at corresponding moment obtains the discharge electricity amount value at corresponding moment by wherein discharge voltage value.
In short, the foregoing is merely presently preferred embodiments of the present invention, made by all ranges according to the present patent application patent
Deng variation and modification, it is all covered by the present invention.
Claims (7)
1. a kind of lead-acid battery quantity measuring method, it is characterised in that: the following steps are included:
(a) battery floating voltage is acquired, according to the initial true electricity Qa0 of charge-discharge characteristic curve acquisition, calculates initial nominal
Electricity Qc0 is the rated capacity of battery its calculation formula is Qc0=Qa0/Qt, Qt；
(b) current data is acquired, judges that battery is in charged state or discharge condition, for example charged state then carries out step (c),
For example discharge condition then carries out step (d)；
(c) charged state electrical measurement, including following sub-step are carried out:
(c1) under the charged state, battery charge Ic, charging duration Tc, the charging current Ic > maximum charge are acquired
When current value Ic_max, starting overcharges alarm, and when the charging current Ic≤pairs of maximum charging current values Ic_max, it is electric to pass through charging
The integrating meter for flowing Ic and charging duration Tc calculates true electricity Qa1, the true electricity Qa1 under the charged state under charged state
The first adjusted coefficient K 1 of middle substitution carries out first time amendment and calculates the nominal electricity Qc1 of the first charging, first amendment system
Number K1 includes charging temperature COEFFICIENT K a, charging charge packing coefficient Kb, the first cell degradation COEFFICIENT K c1；
(c2) after step (c1) measures the nominal electricity Qc1 of the first charging, charging voltage Vc is acquired, selectes charge-discharge characteristic curve
At least one upper check point voltage value Vct and when obtaining Vct corresponding check point charge value Qcr, the Vc >=Vct, passes through institute
The difference Qerr1 for stating the first charging nominal electricity Qc1 and Qcr is corrected for the second time and to calculate the second charging nominally electric
It measures Qc2, measures the correction value of nominal electricity under charged state, i.e., the measurement of lead-acid battery electricity under completion charged state；
(d) discharge condition electrical measurement, including following sub-step are carried out:
(d1) under the discharge condition, acquisition battery discharge current Iout, electric discharge duration Tout, the Iout > maximum electric discharge electricity
When flow valuve Iout_max, starting over-discharge alarm when the Iout≤maximum discharge current value Iout_max, passes through discharge current
The integrating meter of Iout and electric discharge duration Tout calculate true electricity Qa2, the true electricity under the discharge condition under discharge condition
The second adjusted coefficient K 2 is substituted into Qa2, carry out first time amendment and calculates the nominal electricity Qc4 of the first electric discharge, and described second repairs
Positive coefficient K2 includes that discharge temp COEFFICIENT K d, discharge charge enliven COEFFICIENT K e, the second cell degradation COEFFICIENT K c2；
(d2) after step (d1) measures the nominal electricity Qc4 of the first electric discharge, discharge voltage Vo is acquired, selectes charge-discharge characteristic curve
At least one upper check point voltage value Vot and when obtaining Vot corresponding check point charge value Qor, the Vo≤Vot, passes through institute
The difference Qerr2 for stating the first electric discharge nominal electricity Qc4 and Qor is corrected for the second time and to calculate the second electric discharge nominally electric
It measures Qc5, measures the correction value of nominal electricity under discharge condition, i.e., the measurement of lead-acid battery electricity under completion discharge condition.
2. a kind of lead-acid battery quantity measuring method according to claim 1, it is characterised in that: in the step (c1),
Acquisition battery temperature simultaneously obtains the corresponding charging temperature COEFFICIENT K a of the battery temperature by tabling look-up, and measures the charged state
The maximum value Qamax1 of true electricity Qa1, minimum value Qamin1 down, and pass through the maximum value Qamax1, minimum value Qamin1
The charging charge packing coefficient Kb is calculated, its calculation formula is Kb=(Qamax1-Qamin1)/Qt, measure by previous moment
The ratio of the nominal electricity Qc3 and Qt of charging obtain the first cell degradation COEFFICIENT K c1, the nominal electricity of first charging
The calculation formula of Qc1 are as follows:, dt is charging duration Tc.
3. a kind of lead-acid battery quantity measuring method according to claim 2, it is characterised in that: in the step (c2),
When the check point voltage value Vct is maximum charging voltage value Vc_max, corresponding check point electricity is true under charged state
The maximum value Qamax1 of electricity.
4. a kind of lead-acid battery quantity measuring method according to claim 1, it is characterised in that: in the step (d1),
Acquisition battery temperature simultaneously obtains the corresponding discharge temp COEFFICIENT K d of the battery temperature by tabling look-up, and measures the discharge condition
The maximum value Qamax2 of true electricity Qa2, minimum value Qamin2 down, and pass through the maximum value of electricity true under the discharge condition
Qamax2, minimum value Qamin2 calculate the discharge charge and enliven COEFFICIENT K e, its calculation formula is Ke=(Qamax2-Qamin2)/
The ratio of Qt, the nominal electricity Qc6 and Qt of electric discharge measured by previous moment obtain the second cell degradation COEFFICIENT K c2, institute
State the calculation formula of the nominal electricity Qc4 of the first electric discharge are as follows:, dt is electric discharge
Duration Tout.
5. a kind of lead-acid battery quantity measuring method according to claim 4, it is characterised in that: in the step (d2),
When the check point voltage value Vot is minimum discharge voltage value Vo_min, corresponding check point electricity is true under discharge condition
The minimum value Qamin2 of electricity.
6. a kind of lead-acid battery quantity measuring method according to claim 1, it is characterised in that: in the step (c2),
Take 4 check points be Vct1, Vct2, Vct3, Vct4 and according to charge-discharge characteristic curve determine check point charge value be Qcr1,
Qcr2, Qcr3, Qcr4, when the Vc >=Vct1, when Qerr1=Qc1-Qcr1, the Vc >=Vct2, Qerr1=Qc1-Qcr2, institute
When stating Vc >=Vct3, when Qerr1=Qc1-Qcr3, the Vc >=Vct4, then Qerr1=Qc1-Qcr4 calculates the by Qerr1
The two nominal electricity Qc2 of charging, its calculation formula is the second nominal electricity of chargingDt is charging duration Tc, and wherein Ki is electricity mistake
Poor correction factor simultaneously passes through acquisition of tabling look-up.
7. a kind of lead-acid battery quantity measuring method according to claim 1, it is characterised in that: in the step (d2),
Take 4 check points be Vot1, Vot2, Vot3, Vot4 and according to charge-discharge characteristic curve determine check point charge value be Qor1,
Qor2, Qor3, Qor4, when the Vo≤Vot1, when Qerr2=Qc4-Qor1, the Vo≤Vot2, Qerr2=Qc4-Qor2, institute
When stating Vo≤Vot3, when Qerr2=Qc4-Qor3, the Vo≤Vot4, then Qerr2=Qc4-Qor4 calculates the by Qerr2
The two nominal electricity Qc5 of electric discharge, its calculation formula is the second nominal electricity of electric discharge, dt is electric discharge duration Tout, and wherein Ki is
Electricity Ratio for error modification simultaneously passes through acquisition of tabling look-up.
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Denomination of invention: A method for measuring the charge of lead-acid batteries Effective date of registration: 20230207 Granted publication date: 20201229 Pledgee: Bank of China Limited by Share Ltd. Development Zone Jinhua subbranch Pledgor: ZHEJIANG LUYUAN ELECTRIC VEHICLE Co.,Ltd. Registration number: Y2023330000297 |
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Denomination of invention: A method for measuring the charge of lead-acid batteries Granted publication date: 20201229 Pledgee: Bank of China Limited by Share Ltd. Development Zone Jinhua subbranch Pledgor: ZHEJIANG LUYUAN ELECTRIC VEHICLE Co.,Ltd. Registration number: Y2024980010933 |