CN109669138A - A kind of method of precise determination power lead storage battery residual capacity - Google Patents
A kind of method of precise determination power lead storage battery residual capacity Download PDFInfo
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Abstract
The invention discloses a kind of methods of precise determination power lead storage battery residual capacity, this method comprises: calculating initial capacity SOC using the functional relation of open-circuit voltage and capacity0；Residual capacity SOC when battery pack dynamic operation is calculated using ampere-hour methodA；It is corrected by the relationship curved surface and nominal capacity of voltage, electric current and residual capacity, corrects SOCA.The residual capacity that the present invention is directed to ampere-hour method measurement does not have initial capacity algorithm and the error by accumulating over a long period to lead to the problem of residual capacity inaccuracy, power lead storage battery group residual capacity is corrected, pass through the relationship curved surface of voltage, electric current and residual capacity, and nominal capacity amendment, fitting obtains corresponding correction function, the correction function considers not only the relationship of voltage, electric current and residual capacity, it is also modified using nominal capacity, residual capacity and the error of real surplus capacity are within 3% after amendment.
Description
Technical field
The present invention relates to power lead storage battery technical fields more particularly to a kind of precise determination power lead storage battery residue to hold
The method of amount.
Background technique
Lead storage battery is a kind of widely used electrochmical power source, the product have good invertibity, voltage characteristic it is steady,
Long service life, applied widely, abundant raw materials, renewable use, and it is cheap the advantages that.In recent years, with environmental protection
The enhancing of consciousness and being on the rise for energy problem, lead storage battery play in electric vehicle system of crucial importance as electrical source of power
Effect.
Currently, electric vehicle can only accomplish the display of battery capacity, electric vehicle electricity shows that table is also the straight of cell voltage
Instruction is connect, error is very big, and it is the big pain spot of electric vehicle user, influences judgement of the user to electric vehicle residue mileages of continuation,
Often occur showing 50% or more electricity in instrument panel of electric vehicle, but electric vehicle starts without sufficient electricity, or starting is electric soon
Motor-car just situation out of power.Thus, it is necessary to which the residual capacity to battery of electric vehicle carries out Accurate Prediction.
The detection method of existing battery remaining power (state of charge, SOC) are as follows: current integration method, electric discharge are surveyed
Examination method, open circuit voltage method, internal resistance method etc..Wherein, current integration method, i.e. Ah method, also known as ampere-hour method or electricity backing space technique are
The capacity Q of battery is measured so that " Ah " is unit, by the integral of charging and discharging currents and time, acquires more accurate electricity
Magnitude.Discharge test method is that continuous discharge test is carried out to load resistance, in discharge process, adjusts load resistance size, maintains
Discharge current it is constant, until final discharging voltage.Open circuit voltage method, also known as OCV method, the electromotive force of remaining battery is related,
According to electrochemical theory, when the conversion of chemical energy and electric energy reaches balance in battery, positive equilibrium electrod potential and cathode
The difference of equilibrium electrod potential, becomes cell emf, is numerically equal to open-circuit voltage when battery reaches stable state.
In the above-mentioned methods, open circuit voltage method is the simplest, it is only necessary to which the open-circuit voltage for detecting battery can estimate battery
Discharge condition, but it must be steady state voltage when battery is in no-load that this method, which requires voltage detected, it can only be quiet in battery
It just can measure when setting, i.e., be that SOC detection can not be carried out using this method when battery is in charge and discharge state.Due to ampere-hour method
Mainly study the surface of the system, it is easy to accomplish, it is widely used, this method real-time measurement battery charging and discharging energy, with it
He compares several method, limited by battery situation itself it is small, be suitable for play external monitoring the characteristics of.
But current integration method is during estimating remaining capacity, however it remains following problems: (1) method itself cannot
Estimate SOC0；(2) coulombic efficiency is difficult to accurately measure；(3) non-normal temperature state SOC evaluated error is larger.
For this purpose, researchers have done largely about the modified research of current integration method, and such as: Cao Zhenhua (is based on ampere-hour method
Online battery remaining power correction algorithm, 2017) with monomer valve-regulated lead-acid battery (VRLA) for research object, to solve to exist
The problem of the real-time dynamic estimation of the residual capacity (SOC) of battery, is converted based on ampere-hour method and operating voltage under wire type working condition
A kind of modification method for improving battery remaining power computational accuracy is proposed on the basis of residual capacity algorithm；By being based on battery
The battery remaining power of operating voltage estimates, initial capacity and deep discharge later period using its estimation result amendment ampere-hour method
Residual capacity improves ampere-hour method estimation precision.
However, the above method still needs to be further increased for the accuracy of lead storage battery Residual capacity prediction.
Summary of the invention
The present invention is based on current integration method in the prior art there are the problem of, provide a kind of precise determination power lead electric power storage
The method of pond residual capacity, this method increase the algorithm of initial residual capacity on the basis of current integration method, and to repeatedly filling
Residual capacity after electric discharge use is modified, and improves the accuracy of lead storage battery Residual capacity prediction, and the battery of prediction is surplus
Covolume amount and the error of actual capacity are within 3%.
Specific technical solution is as follows:
A kind of method of precise determination power lead storage battery residual capacity, comprising:
(1) functional relation of power lead storage battery group open-circuit voltage and capacity is obtained using open circuit voltage method, measures power
Open-circuit voltage before the operation of lead storage battery group obtains initial capacity SOC according to the relational expression0；
(2) the initial capacity SOC measured based on step (1)0, the operation of power lead storage battery dynamic group is calculated using ampere-hour method
When residual capacity SOCA；
(3) any one in the following steps (a)~(c) is selected, to residual capacity SOC described in step (2)AIt is repaired
Just；
(a) as the load voltage > 11.3V of single power lead storage battery, for the power lead storage battery in discharge process
It is modified；
Correction formula are as follows: revised residual capacity
Wherein, I is operating current, and t is the working time；
(b) as the load voltage > 11.3V of single power lead storage battery, for the power lead storage battery in charging process
It is modified；
Correction formula are as follows: revised residual capacity
(c) as load voltage≤11.3V of single power lead storage battery, battery is carried out using different current gradients
Charge or discharge, the relation curve of several electric currents of acquisition, voltage and residual capacity form electric current, voltage and residual capacity
Relationship curved surface, after fitting surface, obtain the relationship of residual capacity and voltage, electric current, and be modified in conjunction with nominal capacity, obtain
To following functional relation:
SOC={ [a × (I/C)+b] (V/n)2[c × (I/C)+d] (V/n)+(e × (I/C)+f) } % × C；
Wherein, a, b, c, d, e, f are function coefficients, and I is discharge current value, and C is the capacity nominal value of battery, and V is in I
Load voltage values under the conditions of corresponding discharge current, n are the battery number of elements of battery group.
The residual capacity that the present invention is directed to ampere-hour method measurement does not have initial capacity or initial capacity inaccuracy and continues
The inaccurate problem of low-capacity batteries measurement, is corrected ampere-hour method, is measured initially by open-circuit voltage method after charge and discharge
Capacity is corrected by the relationship curved surface and nominal capacity of voltage, electric current and residual capacity, and fitting obtains correcting letter accordingly
Number, which considers not only the relationship of initial capacity and voltage, electric current and residual capacity, also using nominal capacity into
Row amendment, residual capacity and the error of real surplus capacity are within 3% after amendment.
In view of the capacity number actually used up in discharge process is battery pack by 100% releasing, and in charging process, electricity
The capacity that pond group can actually release only actually is charged into the 95%-98% of capacity, and cumulative errors each time pass through day
The product moon tires out error can be bigger.So being modified using step (a) and step (b).
The battery for the above-mentioned particularly suitable electric bicycle of residual capacity measuring method that the present invention uses, such as: 6-
DZF-12 type battery and 6-DZF-20 type battery.
Further, in step (1), the linear relationship are as follows: SOC=[a ' × (V/n)2- b ' × (V/n)+c ']) %*
C；
Wherein, a ', b ', c ' are function coefficients, and V is open-circuit voltage, and n is the battery number of elements of battery group, and C is battery
Capacity nominal value.
For 6-DZF-12 type battery and 6-DZF-20 type battery, the linear relationship are as follows: S OC0=(8.4491
×(V/n)2- 159.23 × (V/n)+727.3) %*C；Wherein, V is open-circuit voltage, and n is the battery number of elements of battery group, and C is
The capacity nominal value of battery.
Further, in step (1), the formula of the ampere-hour method use are as follows:
Further, when the power lead storage battery is 6-DZF-12 type battery, residual capacity and electricity in step (c)
Pressure, the relational expression of electric current are as follows: SOC={ [- 1.451 × (I/C)+17.894] (V/n)2–[- 36.751×(I/C)+379.86]
(V/n)+(- 226.2 × (I/C)+2016.3) } % × C；
Wherein, I is discharge current value, and C is the capacity nominal value of battery, under the conditions of V is the discharge current corresponding to I
Voltage value, n be battery group battery number of elements.
The particularly suitable 6-DZF-12 type battery of above-mentioned relation formula, the size battery can be used above-mentioned formula and carry out residue
The measurement of capacity, preferably, the power lead storage battery is 4812 batteries.
Further, when the power lead storage battery is 6-DZF-20 type battery, residual capacity and electricity in step (c)
Pressure, the relational expression of electric current are as follows: SOC={ [0.907 × (I/C)+18.226] (V/n)2– [6.6672×(I/C)+394.76]
(V/n)+(- 30.747 × (I/C)+2137.1) } % × C；
Wherein, I is discharge current value, and C is the capacity nominal value of battery, under the conditions of V is the discharge current corresponding to I
Voltage value, n be battery group battery number of elements.
The particularly suitable 6-DZF-20 type battery of above-mentioned relation formula, the size battery can be used above-mentioned formula and carry out residue
The measurement of capacity, preferably, the power lead storage battery is 4820 batteries.
In addition to above-mentioned amendment, invention also contemplates that the problem of battery self discharge, it is surplus to battery to exclude self discharge
The influence of covolume amount further includes further step (d) in step (3):
If (d) battery is placed in the state of without charge and discharge, deducted by 0.3%-0.5%C/ days capability values
The residual capacity of battery.
Compared with prior art, the invention has the following advantages:
(1) residual capacity that the present invention is directed to ampere-hour method measurement does not have initial capacity algorithm and the mistake by accumulating over a long period
Difference leads to the problem of residual capacity inaccuracy, is corrected to power lead storage battery group residual capacity, by voltage, electric current with
The relationship curved surface and nominal capacity of residual capacity are corrected, and fitting obtains corresponding correction function, which not only considers
It to the relationship of voltage, electric current and residual capacity, is also modified using nominal capacity, residual capacity and real surplus are held after amendment
The error of amount is within 3%.
(2) present invention also considers battery self discharge problem wherein, to further improve residual capacity and reality after amendment
The error of border residual capacity.
Detailed description of the invention
Fig. 1 is that the SOC for calculating the 48V 12Ah battery obtained using the method for embodiment 1, comparative example 1 and comparative example 2 calculates figure.
Fig. 2 is that the SOC for calculating the 48V 20Ah battery obtained using the method for embodiment 2, comparative example 3 and comparative example 4 calculates figure.
Fig. 3 is the SOC test chart using self-discharge of battery in embodiment 3, the method for comparative example 5 and practical SOC.
Specific embodiment
1 4812 battery of embodiment
(1) battery for taking 1 group of 48V, 12Ah measures the open-circuit voltage of this group of battery, obtains battery open circuit voltage and holds
The linear functional relation of amount；
Functional relation is as follows: SOC=[(8.4491* (V/n) * (V/n) -159.23* (V/n)+727.3)/10 0] * C；
Wherein, V is open-circuit voltage, and n is the battery number of elements of battery group, and n=4, C are the capacity nominal value of battery.
Before battery pack operation, the open-circuit voltage of battery pack is measured, according to above-mentioned functional relation, obtains power lead storage
The SOC of battery pack0；
(2) charge and discharge are carried out to this group of battery, utilizes the residual capacity SOC of ampere-hour method calculating accumulatorA；
(3) to the residual capacity SOC of step (2)AIt is modified；
Specific modification method is as follows:
(a) as the load voltage > 11.3V of single power lead storage battery, for the power lead storage battery in discharge process
It is modified；
Correction formula are as follows: revised residual capacity
Wherein, I is operating current, and t is the working time；
(b) as the load voltage > 11.3V of single power lead storage battery, for the power lead storage battery in charging process
It is modified；
Correction formula are as follows: revised residual capacity
(c) as load voltage≤11.3V of single power lead storage battery, battery is carried out using different current gradients
Charge or discharge, the relation curve of several electric currents of acquisition, voltage and residual capacity form electric current, voltage and residual capacity
Relationship curved surface, after fitting surface, obtain the relationship of residual capacity and voltage, electric current；
However, 4812 battery of load voltage≤11.3V is under different current conditions, though voltage has with electricity homologous thread
Certain relationship, but it is complex.If only judged according to voltage, error is very big.
Therefore corrected in conjunction with nominal capacity, obtain following functional relation:
SOC={ [- 1.451 × (I/C)+17.894] (V/n)2–[-36.751×(I/C)+379.86](V/n)+(-22
6.2 × (I/C)+2016.3) } % × C；
Wherein, I is discharge current value, and C is the capacity nominal value of battery, under the conditions of V is the discharge current corresponding to I
Voltage value, n be battery group battery number of elements；
If (d) battery is placed in the state of without charge and discharge, battery is deducted by 0.5%C/ days capability values
Residual capacity.
Comparative example 1
For this comparative example in addition to without step (a)~(c) amendment, remaining step is identical with embodiment 1.
Comparative example 2
For this comparative example in addition to the amendment without step (c), remaining step is identical with embodiment 1.
Battery is carried out to continue charge and discharge, carries out continuing amendment according to the algorithm that embodiment 1 and comparative example 1,2 provide, obtain
The residual capacity SOC obtainedAIt is compared with the practical SOC of battery, the results are shown in Table 1 and Fig. 1.
Table 1
From above-mentioned Fig. 1 and table 1 as can be seen that calculating the SOC of battery only referring to ampere-hour method, initial capacity first can not be measured
Or what is measured will just have related data by charge and discharge process, secondly ampere-hour method (i.e. comparative example 1) passes through tens charge and discharge
After circulation, it can be said to be more accurate preceding ten times, but the cumulative errors by accumulating over a long period, deviation is increasing, and has added step (a)
It is just relatively accurate many that the modified SOC of charge and discharge is carried out with step (b)；But the SOC of charge and discharge amendment (i.e. comparative example 2) is added
By tens circulations, rear period error is also increasing, and need to be corrected by the matched curve under low capacity state could not have
Cumulative errors are just corrected when there is a low capacity state, add the SOC curve of low capacity amendment (i.e. embodiment 1)
Compared with practical SOC curve, error is such as calculated by 6-DZF-12 battery nominal capacity within 3%, and maximum capacity error is only
There is 0.33Ah.
2 4820 battery of embodiment
(1) battery for taking 1 group of 48V, 20Ah measures the open-circuit voltage of this group of battery, obtains battery open circuit voltage and holds
The linear functional relation of amount；
Functional relation is as follows: SOC=[(8.4491* (V/n) * (V/n) -159.23* (V/n)+727.3)/10 0] * C；
Wherein, V is open-circuit voltage, and n is the battery number of elements of battery group, and n=4, C are the capacity nominal value of battery.
Before battery pack operation, the open-circuit voltage of battery pack is measured, according to above-mentioned functional relation, obtains power lead storage
The SOC of battery pack0；
(2) charge and discharge are carried out to this group of battery, utilizes the residual capacity SOC of ampere-hour method calculating accumulatorA；
(3) to the residual capacity SOC of step (2)AIt is modified；
Specific modification method is as follows:
(a) as the load voltage > 11.3V of single power lead storage battery, for the power lead storage battery in discharge process
It is modified；
Correction formula are as follows: revised residual capacity
Wherein, I is operating current, and t is the working time；
(b) as the load voltage > 11.3V of single power lead storage battery, for the power lead storage battery in charging process
It is modified；
Correction formula are as follows: revised residual capacity
(c) as load voltage≤11.3V of single power lead storage battery, battery is carried out using different current gradients
Charge or discharge, the relation curve of several electric currents of acquisition, voltage and residual capacity form electric current, voltage and residual capacity
Relationship curved surface, after fitting surface, obtain the relationship of residual capacity and voltage, electric current；It corrects, obtains following in conjunction with nominal capacity
Functional relation:
SOC={ [0.907 × (I/C)+18.226] (V/n)2–[6.6672×(I/C)+394.76](V/n)+(-30.7
47 × (I/C)+2137.1) } % × C；
Wherein, I is discharge current value, and C is the capacity nominal value of battery, under the conditions of V is the discharge current corresponding to I
Voltage value, n be battery group battery number of elements；
If (d) battery is placed in the state of without charge and discharge, battery is deducted by 0.5%C/ days capability values
Residual capacity.
Comparative example 3
For this comparative example in addition to without step (a)~(c) amendment, remaining step is identical with embodiment 1.
Comparative example 4
For this comparative example in addition to the amendment without step (c), remaining step is identical with embodiment 1.
Battery is carried out to continue charge and discharge, carries out continuing amendment according to the algorithm that embodiment 1 and comparative example 1,2 provide, obtain
The residual capacity SOC obtainedAIt is compared with the practical SOC of battery, the results are shown in Table 2 and Fig. 2.
Table 2
From above-mentioned Fig. 2 and table 2 as can be seen that calculating the SOC of battery only referring to ampere-hour method, initial capacity first can not be measured
Or what is measured will just have related data by charge and discharge process, secondly ampere-hour method (i.e. comparative example 3) passes through tens charge and discharge
After circulation, it can be said to be more accurate preceding ten times, but the cumulative errors by accumulating over a long period, deviation is increasing, and has added step (a)
It is just relatively accurate many that the modified SOC of charge and discharge is carried out with step (b)；But the SOC of charge and discharge amendment (i.e. comparative example 4) is added
By tens circulations, rear period error is also increasing, and need to be corrected by the matched curve under low capacity state could not have
Cumulative errors are just corrected when there is a low capacity state, add the SOC curve of low capacity amendment (i.e. embodiment 2)
Compared with practical SOC curve, error is such as calculated by 6-DZF-20 battery nominal capacity within 3%, and maximum capacity error is only
There is 0.50Ah.
As long as from embodiment 1 and embodiment 2 as can be seen that measuring the open-circuit voltage of this group of battery, so that it may according to battery
The functional relation of group open-circuit voltage and capacity, is calculated the initial capacity SOC of this group of battery0, and comparative example 1 and comparative example 3,
It is measured with ampere-hour method, can just obtain SOC after needing to carry out a charge and discharge process0, can not measure immediately.Data in table 1 are only
Be according to the practical SOC of battery that measures as a comparison case 1 and comparative example 3 SOC0。
Embodiment 3
(1) battery for taking 1 group of 48V, 12Ah measures the practical SOC of this group of battery,
(2) it carries out the self discharge for standing 7 days to this group of battery to test, every to stand test in 7 days once, embodiment 4 presses 0.3%
C/ days capability values deduct the residual capacity of battery, utilize self discharge, the residual capacity SOC of calculating accumulatorA；
Comparative example 5
For this comparative example except the amendment without self discharge, remaining step is same as Example 3.
Table 3
| Number | Self discharge test | Comparative example 5 | Embodiment 3 | The practical SOC of battery |
| SOC0 | 11.5 | 11.5 | 11.5 | |
| SOC1 | Stand 7 days | 11.5 | 11.44 | 11.48 |
| SOC2 | Stand 7 days | 11.5 | 11.38 | 11.46 |
| SOC3 | Stand 7 days | 11.5 | 11.32 | 11.43 |
| SOC4 | Stand 7 days | 11.5 | 11.26 | 11.39 |
| SOC5 | Stand 7 days | 11.5 | 11.2 | 11.35 |
| SOC6 | Stand 7 days | 11.5 | 11.14 | 11.30 |
| SOC7 | Stand 7 days | 11.5 | 11.08 | 11.24 |
| SOC8 | Stand 7 days | 11.5 | 11.02 | 11.17 |
| SOC9 | Stand 7 days | 11.5 | 10.96 | 11.08 |
| SOC10 | Stand 7 days | 11.5 | 10.9 | 10.98 |
| SOC11 | Stand 7 days | 11.5 | 10.84 | 10.86 |
| SOC12 | Stand 7 days | 11.5 | 10.78 | 10.71 |
It can be seen that the process in measuring and calculating battery SOC from table 3 and Fig. 3, need to carry out SOC the amendment of self-discharge of battery,
Not so SOC error can be increasing, and has carried out the modified SOC of the self discharge and practical SOC of battery and be just relatively close together.
Claims (9)
1. a kind of method of precise determination power lead storage battery residual capacity characterized by comprising
(1) functional relation of power lead storage battery group open-circuit voltage and capacity is obtained using open circuit voltage method, measurement power lead stores
Open-circuit voltage before battery pack operation stores formula according to the relationship lead, obtains initial capacity SOC0；
(2) the initial capacity SOC measured based on step (1)0, calculated when power lead storage battery dynamic group is run using ampere-hour method
Residual capacity SOCA；
(3) any one in the following steps (a)~(c) is selected, to residual capacity SOC described in step (2)AIt is modified；
(a) as the load voltage > 11.3V of single power lead storage battery, the power lead storage battery in discharge process is carried out
Amendment；t0
Correction formula are as follows: revised residual capacity
Wherein, I is operating current, and t is the working time；
(b) as the load voltage > 11.3V of single power lead storage battery, the power lead storage battery in charging process is carried out
Amendment；
Correction formula are as follows: revised residual capacity
(c) it as load voltage≤11.3V of single power lead storage battery, is charged using different current gradients to battery
Or electric discharge, the relation curve of several electric currents of acquisition, voltage and residual capacity form the pass of electric current, voltage and residual capacity
It is curved surface, after fitting surface, obtains the relationship of residual capacity and voltage, electric current, and be modified in conjunction with nominal capacity, obtain down
Array function relational expression:
SOC={ [a × (I/C)+b] (V/n)2[c × (I/C)+d] (V/n)+(e × (I/C)+f) } % × C；
Wherein, a, b, c, d, e, f are function coefficients, and I is discharge current value, and C is the capacity nominal value of battery, and V is right in I
Load voltage values under the conditions of the discharge current answered, n are the battery number of elements of battery group.
2. the method for precise determination power lead storage battery residual capacity as described in claim 1, which is characterized in that step (1)
In, the linear relationship are as follows: SOC=[a ' × (V/n)2- b ' × (V/n)+c ']) %*C；
Wherein, a ', b ', c ' are function coefficients, and V is open-circuit voltage, and n is the battery number of elements of battery group, and C is the capacity of battery
Nominal value.
3. the method for precise determination power lead storage battery residual capacity as claimed in claim 2, which is characterized in that for 6-
DZF-12 type battery and 6-DZF-20 type battery, the linear relationship are as follows: SOC0=(8.4491 × (V/n)2-159.23×
(V/n)+727.3) %*C；Wherein, V is open-circuit voltage, and n is the battery number of elements of battery group, and C is that the capacity of battery is nominal
Value.
4. the method for precise determination power lead storage battery residual capacity as described in claim 1, which is characterized in that step (2)
In, the formula of the ampere-hour method use are as follows:
5. the method for precise determination power lead storage battery residual capacity as described in claim 1, which is characterized in that the power
When lead storage battery is 6-DZF-12 type battery；
The relational expression of residual capacity and voltage, electric current in step (c) are as follows: SOC={ [- 1.451 × (I/C)+17.894] (V/n)2–
[- 36.751 × (I/C)+379.86] (V/n)+(- 226.2 × (I/C)+2016.3) } % × C；
Wherein, I is discharge current value, and C is the capacity nominal value of battery, electricity under the conditions of V is the discharge current corresponding to I
Pressure value, n are the battery number of elements of battery group.
6. the method for precise determination power lead storage battery residual capacity as claimed in claim 5, which is characterized in that described is dynamic
Power lead storage battery is 4812 batteries.
7. the method for precise determination power lead storage battery residual capacity as described in claim 1, which is characterized in that the power
When lead storage battery is 6-DZF-20 type battery；
The relational expression of residual capacity and voltage, electric current in step (c) are as follows: SOC={ [0.907 × (I/C)+18.226] (V/n)2–
[6.6672 × (I/C)+394.76] (V/n)+(- 30.747 × (I/C)+2137.1) } % × C；
Wherein, I is discharge current value, and C is the capacity nominal value of battery, electricity under the conditions of V is the discharge current corresponding to I
Pressure value, n are the battery number of elements of battery group.
8. the method for precise determination power lead storage battery residual capacity as claimed in claim 7, which is characterized in that described is dynamic
Power lead storage battery is 4820 batteries.
9. the method for precise determination power lead storage battery residual capacity as described in claim 1, which is characterized in that step (3)
In, further include step (d):
If (d) battery is placed in the state of without charge and discharge, deducts and store by (0.3%-0.5%) C/ days capability value
The residual capacity of battery.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110988706A (en) * | 2019-12-27 | 2020-04-10 | 四川长虹电器股份有限公司 | Method for calculating SOC (state of charge) capacity of cadmium-nickel battery |
| CN113514770A (en) * | 2021-05-14 | 2021-10-19 | 江苏欧力特能源科技有限公司 | Lithium battery residual capacity SOC prediction algorithm based on open-circuit voltage and battery temperature drive |
| CN114428214A (en) * | 2022-01-04 | 2022-05-03 | 苏州禾望电气有限公司 | Management and monitoring method for battery standby power supply of variable pitch system |
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