CN104656021B - The predictor method and device of a kind of remaining battery capacity - Google Patents
The predictor method and device of a kind of remaining battery capacity Download PDFInfo
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- CN104656021B CN104656021B CN201310582823.5A CN201310582823A CN104656021B CN 104656021 B CN104656021 B CN 104656021B CN 201310582823 A CN201310582823 A CN 201310582823A CN 104656021 B CN104656021 B CN 104656021B
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Abstract
An embodiment of the present invention provides the predictor method and device of a kind of remaining battery capacity, method includes：In the discharge process each time of storage battery, the corresponding discharge time interval of K discharge current value and each discharge current value when obtaining storage battery to load discharge is spaced according to setting, after this discharge process, the electric discharge total amount of this discharge process is determined according to K discharge current value and corresponding time interval, residual capacity after the electric discharge total amount of this discharge process is estimated as storage battery charging next time, realize storage battery remaining battery capacity is compared in the case where accessing power-supply system and accurately detect, improve the accuracy and real-time of accumulator capacity detection.
Description
Technical field
The present invention relates to the predictor method and device of electricity field, more particularly to a kind of remaining battery capacity.
Background technology
In the communications industry, storage battery can be all equipped with general communications equipment room or base station.Storage battery will after external power failure
Chemical energy is converted into electric energy to provide electric power to communication equipment, and the normal operation of communication equipment is ensured with this.Communications equipment room or
Base station needs maintenance personnel to be generated electricity with oil machine after having a power failure, if can be preferentially to storage battery after being predicted to accumulator capacity
The low communications equipment room of capacity or base station generate electricity, and so substantially increase the reliability of maintenance.
Currently, it is many for the detection mode of accumulator capacity, but the detection currently for accumulator capacity needs to lead to
Disengaging power-supply system is crossed to be detected, so that detection process is complicated, and is carried out under conditions of power-supply system is departed from
Detection can not reflect the releasable capacitance after storage battery access power-supply system, therefore currently for accumulator capacity
The accuracy of detection mode is relatively low.
The content of the invention
The present invention provides the predictor method and device of a kind of remaining battery capacity, to solve currently for electric power storage
The problem of accuracy of tankage detection is relatively low.
Its specific technical solution is as follows：
A kind of method that remaining battery capacity is estimated, including：
In the discharge process each time of storage battery, K when obtaining storage battery to load discharge are spaced according to setting and is put
Electric current value and the corresponding discharge time interval of each discharge current value, the discharge time is at intervals of this acquisition electric discharge electricity
Flow valuve and the last time interval obtained between discharge current value, K are the positive integer more than or equal to 2；
After this discharge process, determined according to the K discharge current value and corresponding discharge time interval
The electric discharge total amount of this discharge process；
Residual capacity after the electric discharge total amount of this discharge process is estimated as storage battery charging next time.
Optionally, it is spaced according to setting and obtains K discharge current value of the storage battery to load discharge, including：
When the storage battery starts to load discharge, storage battery described in first record is in the electricity of electric discharge when starting that discharges
Flow valuve and discharge time interval；
Judge whether the decrement of the battery tension exceedes threshold value, if the decrement of the battery tension exceedes threshold
Value, then obtain the current discharge current value of the storage battery and the time interval between last acquisition discharge current value,
And obtain K current value during the battery discharging and K discharge time interval, K is just whole more than or equal to 2
Number.
Optionally, according to setting be spaced obtain K discharge current value from storage battery to load discharge during, also wrap
Include：
The electric discharge total amount C obtained after obtaining the storage battery last time discharge processr；
Current remaining capacity of the storage battery after each prefixed time interval is obtained according to prefixed time intervalAnd the current remaining capacity that the storage battery is calculated every time is recorded, wherein, Ck
Current remaining capacity for the storage battery obtained after each prefixed time interval, I1For the discharge current of first record
Value, T1For the discharge time interval of first record, k is the record number of discharge current value in the prefixed time interval, IkFor
The discharge current value of kth time record, TkFor the discharge time interval of kth time record.
Optionally, this discharge process knot is determined according to the K discharge current value and corresponding discharge time interval
Electric discharge total amount after beam, including：
At the end of the battery discharging, judge whether the storage battery is secondary discharge；
If it is not, then judging whether the magnitude of voltage after the completion of the battery discharging is less than preset voltage value；
, then will be according to described K electric discharge electricity when the magnitude of voltage after the completion of the battery discharging is less than preset voltage value
Flow valuve and corresponding discharge time interval determine this discharge process after electric discharge total amount.
Optionally, this discharge process knot is determined according to the K discharge current value and corresponding discharge time interval
Electric discharge total amount after beam, including：
According to K discharge current value of record and K discharge time interval, obtain the storage battery this electric discharge and terminate
Electric discharge total amount afterwardsWherein, CfFor battery discharging total amount, k is the total number of record, I1
For the discharge current value of first record, IKFor the discharge current value of kth time record, T1Between the discharge time of first record
Every TKFor the discharge time interval of kth time record.
Optionally, this discharge process knot is determined according to the K discharge current value and corresponding discharge time interval
Electric discharge total amount after beam, including：
According to the K discharge current value and corresponding discharge time interval, the corresponding K discharge current value of generation
And the reference discharge curve at interval of corresponding discharge time；
Discharge curve more new standard discharge curve is referred to according to described, and is determined described with reference to the corresponding electric discharge of discharge curve
Total amount.
The device that a kind of remaining battery capacity is estimated, including：
Logging modle, in the discharge process each time of storage battery, being spaced according to setting and obtaining storage battery to load
The corresponding discharge time interval of K discharge current value and each discharge current value of electric discharge, the discharge time is at intervals of this
Secondary to obtain discharge current value and the last time interval obtained between discharge current value, K is the positive integer more than or equal to 2.
Determining module, for after this discharge process, according to the K discharge current value and corresponding electric discharge
Time interval determines the electric discharge total amount of this discharge process；
Processing module, after the electric discharge total amount of this discharge process is estimated as storage battery charging next time
Residual capacity.
Optionally, the logging modle is specifically used for when the storage battery starts to load discharge, first record institute
Discharge current value and discharge time interval of the storage battery when discharging beginning are stated, judging the decrement of the battery tension is
It is no to exceed threshold value, if the decrement of the battery tension exceedes threshold value, obtain the current discharge current value of the storage battery
And the time interval between last acquisition discharge current value, and obtain K electric current during the battery discharging
Value and K discharge time interval.
Optionally, further include：
Acquisition module, for obtaining the storage battery last time discharge process after obtained electric discharge total amount Cr；
Electricity determining module, for obtaining the storage battery after each prefixed time interval according to prefixed time interval
Current remaining capacityAnd record the current residual that the storage battery is calculated every time
Capacity, wherein, CkCurrent remaining capacity for the storage battery obtained after each prefixed time interval, I1To remember for the first time
The discharge current value of record, T1For the discharge time interval of first record, k is discharge current value in the prefixed time interval
Record number, IkFor the discharge current value of kth time record, TkFor the discharge time interval of kth time record.
Optionally, the determining module includes：
Identifying unit, at the end of the battery discharging, judging whether the storage battery is secondary discharge, if
It is no, then judge whether the magnitude of voltage after the completion of the battery discharging is less than preset voltage value；
Processing unit, for when the magnitude of voltage after the completion of the battery discharging is less than preset voltage value, then by basis
The K discharge current value and corresponding discharge time interval determine this discharge process after electric discharge total amount.
Optionally, the processing module is specifically used for the K discharge current value according to record and discharge time interval, obtains
To the storage battery this electric discharge after electric discharge total amountWherein, CfFor battery discharging
Total amount, K be record total number, I1For the discharge current value of first record, IKFor the discharge current value of kth time record, T1For
The discharge time interval of first record, TKFor the discharge time interval of kth time record.
Optionally, the determining module includes：
Generation unit, for according to the K discharge current value and corresponding discharge time interval, generating described in corresponding to
K discharge current value and the reference discharge curve at interval of corresponding discharge time；
Determination unit, for referring to discharge curve more new standard discharge curve according to described, and determines described with reference to electric discharge
The corresponding electric discharge total amount of curve.
In embodiments of the present invention in the discharge process each time of storage battery, it is spaced according to setting and obtains storage battery to negative
K discharge current value and the corresponding discharge time interval of each discharge current value when placing is electric, according to K discharge current value
And corresponding discharge time interval determine this discharge process after electric discharge total amount, and by this electric discharge total amount estimate for
Residual capacity after storage battery charging next time, so can also be accurately detected electric power storage in the situation of storage battery access load
Electric discharge total amount after each electric discharge in pond, which is the residual capacity after storage battery charging complete next time, into
And realize storage battery and remaining battery capacity is detected in the case where accessing power-supply system, improve accumulator capacity
The accuracy and real-time of detection.
In addition, according to the discharge current value of record and put after battery discharging terminates in embodiments of the present invention
Electric time interval can generate reference discharge curve of the storage battery under present load current value, and bent with reference to electric discharge according to this
Standard discharge curve of the line more new accumulator under present load current value, electric power storage is recorded by reference to the renewal of discharge curve
The degree of aging in pond and the change of total capacity, so as to accurately reflect the service condition of storage battery and using shape
State.
Brief description of the drawings
Fig. 1 is a kind of predictor method flow chart of remaining battery capacity in the embodiment of the present invention；
Fig. 2 is constant-current discharge curve synoptic diagram in the embodiment of the present invention；
Fig. 3 is a kind of structure diagram of remaining battery capacity estimating device in the embodiment of the present invention；
Fig. 4 is the structure diagram of another remaining battery capacity estimating device in the embodiment of the present invention.
Embodiment
It is right in the prior art for solving an embodiment of the present invention provides a kind of method and apparatus for detecting accumulator capacity
In the detection accuracy of accumulator capacity detection mode is relatively low the problem of, below by attached drawing and specific embodiment to the present invention
Technical solution is described in detail.
It is a kind of predictor method of remaining battery capacity in the embodiment of the present invention as shown in Figure 1, including：
Step 101, in the discharge process each time of storage battery, when being spaced acquisition storage battery to load discharge according to setting
K discharge current value and the corresponding discharge time interval of each discharge current value.
The discharge time is at intervals of between this acquisition discharge current value and the last time obtained between discharge current value
Every, such as discharge time interval during first record discharge current value is 0s, here since first record is without before
Record references object, be 13s when recording discharge current value for second so discharge time interval is 0s, second at this time
The corresponding time interval of discharge current value is exactly 13s.
Step 102, after this discharge process, according to K discharge current value and corresponding discharge time interval
Determine the electric discharge total amount of this discharge process.
Step 103, the residual capacity after the electric discharge total amount of this discharge process is estimated as storage battery charging next time.
Specifically, it is when storage battery discharges the load connect, then right to institute in the discharge process of the storage battery
The discharge current value and discharge time interval answered are recorded in real time, i.e.,：Storage battery reaches since electric discharge to storage battery
Discharge current value is recorded during specifying blanking voltage and discharge time interval, its specific recording mode are as follows：
The record rule for discharge current value and discharge time interval can judge to store in embodiments of the present invention
The decrement of battery voltage value whether more than one predetermined threshold value, if the decrement of the magnitude of voltage of storage battery exceedes predetermined threshold value
When, then record is proceeded by, i.e.,：If the decrement of battery tension exceedes threshold value, the current discharge current of record storage battery
Value and the time interval between last record discharge current value, and obtain the battery discharging and start to electric discharge to terminate
When K current value and K time interval, K be positive integer more than or equal to 2.
Such as the record rule is reduced for the terminal voltage of storage battery when being equal to or over 0.1V, then once should be recorded
The discharge current value of storage battery and the time interval between last record, storage battery start to carry out first time note during electric discharge
Record, its result recorded is magnitude of voltage 51.200V, and the discharge current value for starting electric discharge is 53.332V, also to record electric discharge at this time
Time interval, discharge time at this time, this completes when discharge current value during electric discharge beginning and electric discharge at intervals of 0.00s
Between the record that is spaced, i.e.,：（51.200 53.332,0.00）, when the terminal voltage value for detecting storage battery is reduced to 50.900V,
I.e.：Voltage reduces 0.3V, it is necessary to record the discharge current value 54.102V to the storage battery again, and with first record it
Between time interval be 14s, i.e.,（50.900 54.102,14）, this completes discharge current value twice and discharge time
The record at interval.In this manner continuously record battery discharging during discharge current value and between discharge time
Every can specifically obtain record result as shown in Table 1：
| Magnitude of voltage (V) | Discharge current value (A) | Discharge time interval (s) |
| 51.200 | 53.332 | 0.0 |
| 50.900 | 54.102 | 14.0 |
| 50.600 | 53.863 | 8.0 |
| 50.300 | 54.293 | 8.0 |
| 50.100 | 54.293 | 8.0 |
| 49.900 | 54.897 | 10.0 |
| 49.600 | 55.124 | 9.0 |
| 49.400 | 55.630 | 10.0 |
| 49.300 | 55.630 | 11.0 |
Table 1
Since the time of discharge process is longer, the discharge process data to be recorded reach specified blanking voltage for storage battery
When corresponding discharge current value and discharge time interval, show only in table 1 recorded in discharge process discharge current value with
And the rule at discharge time interval, therefore the data recorded in table 1 are not the number corresponding to the whole discharge process of storage battery
According to.
Above-mentioned recording process is the record rule for being used as record according to the decrement of voltage, in embodiments of the present invention
In addition to above-mentioned record rule, can also be and record rule is used as according to prefixed time interval, for example, can be by
Discharge current value and discharge time interval are recorded according to the time interval of 1 minute, what is recorded every time at this time certainly puts
Electric time interval all will be 1 minute, and the results are shown in Table 2 for specific record：
| Magnitude of voltage（V） | Discharge current value（A） | Discharge time interval（s） |
| 51.200 | 53.332 | 0.0 |
| 49.500 | 55.324 | 60.0 |
| 48.840 | 56.981 | 60.0 |
| 48.170 | 57.120 | 60.0 |
| 47.510 | 56.623 | 60.0 |
| 46.910 | 56.750 | 60.0 |
Table 2
Data recorded in table 2 also simply characterized battery discharging process record discharge current value and between discharge times
Every rule, be not complete discharge process recorded data, in addition, illustrate in the above-described embodiments can be according to 1 point
The time interval of clock records, and different interval times can be set according to different scenes in actual application process,
Such as can be 30s either 2 minutes constant durations.
After storage battery reaches specified blanking voltage, this electric discharge of storage battery terminates, and discharge current value and puts at this time
The record of electric time interval is also completed, and the data of all records are exactly electric discharge corresponding in storage battery this discharge process at this time
Data.
In embodiments of the present invention during above-mentioned data are recorded, the battery discharging process can be also detected in real time
In current remaining capacity.I.e. during battery discharging starts to electric discharge to terminate, calculate and store according to prefixed time interval
The current remaining capacity of battery, wherein prefixed time interval can carry out it is self-defined, such as can be set to 1 minute, 2 minutes or
Person is 3 minutes, i.e.,：Either detect a storage battery current remaining capacity within 2 minutes or 3 minutes within every 1 minute, its specific calculating
Method is as follows：
Fully charged corresponding electric discharge total amount C after storage battery last time discharge process is to determine firstr, need exist for
Illustrate, storage battery is after fully charged state discharges into blanking voltage in actual application, the electricity that is bled off except storage battery
Also remain with part outside amount, in storage battery to guarantee the minimum electricity, this part electricity of guaranteeing the minimum will not be let go, C hererIt can not wrap
Guarantee the minimum electricity containing this part, but the institute's power consumption bled off in last discharge process, such as, the normal capacity of storage battery is
The maximum electricity that 100Ah, actually storage battery can be released is 95Ah, and this remaining 5Ah is exactly the capacity of guaranteeing the minimum of storage battery.
Current remaining capacity of the storage battery after each prefixed time interval is obtained according to prefixed time intervalAnd the current remaining capacity that the storage battery is calculated every time is recorded, wherein, CkFor
The current remaining capacity of the storage battery obtained after each prefixed time interval, I1For the discharge current value of first record, T1For
The discharge time interval of first record, k be the prefixed time interval in discharge current value record number, IkFor kth time
The discharge current value of record, TkFor the discharge time interval of kth time record.
Such as CrFor 95Ah（Do not include capacity of guaranteeing the minimum）, storage battery is in first preset time
Discharge capacity behind interval is I1*T13600=10Ah of ÷, the current remaining capacity obtained at this time are justWherein, C1For the current residual of storage battery after calculating for the first time
Capacity, I1For the discharge current value of first record, T1For the discharge time interval of first record, such as 1 minute calculates one
Secondary storage battery current remaining capacity, then first after 1 minute, the current remaining capacity of the storage battery is exactly that normal capacity subtracts
The electricity that storage battery is bled off in 1 minute.
Such as second 1 minute and then it is secondary measurement storage battery current residual electricity should be just C2=Cr-[（I1*
T1+I2*T2）÷ 3600], C at this time2It is exactly the current remaining capacity of second storage battery after 1 minute.
Above-mentioned mode is a kind of feasible embodiment, but the present invention is not limited to above-mentioned calculation.
The storage battery current residual that obtains that can be real-time and more accurate by above-mentioned calculation processes is held
Amount, it is achieved thereby that the real time monitoring to remaining battery capacity.
In order to ensure to record the validity of data, completed in the discharge data of storage battery and the record of current remaining capacity
Afterwards, it is necessary first to judge whether storage battery is secondary discharge, i.e.,：Judge the battery discharging this electric discharge time started with it is upper
Filling under the fully charged saturated conditions of storage battery after whether the time difference between the secondary electric discharge end time discharged less than last time
Electric duration, for simple, exactly judges whether the storage battery discharges again in the case of the saturation that charges, if it is not, then should
Storage battery is secondary discharge, and the data recorded at this time are not the data obtained in the state of accumulator electric-quantity saturation, therefore
Obtained data can accurately not reflect the discharge condition of storage battery, and the data of record cannot function as calculating accumulator capacity
Reference data.
If the storage battery is not secondary discharge, also to judge whether the magnitude of voltage after the completion of the battery discharging is less than in advance
If magnitude of voltage, certain preset voltage value can be an interval range, and the magnitude of voltage after the completion of the battery discharging is still
During more than preset voltage value, then storage battery is not fully discharged, and in this case, storage battery cannot be presented in recorded data
Electric discharge trend, the data recorded at this time cannot function as to storage battery carry out calculation of capacity reference data.
If the storage battery neither secondary discharge and voltage after electric discharge is then this time remembered again smaller than preset voltage value
The reference that the discharge current value of record and discharge time interval can be calculated as remaining battery capacity and current total capacity
Data, and the above-mentioned residual capacity being calculated can accurately also reflect the remaining capacity during battery discharging.
Then constant-current discharge curve of the storage battery under present load current value can be obtained according to the data of record, should
Discharge curve just characterizes the discharge curve of the storage battery under present load, i.e.,：The storage battery is under the load current value
With reference to discharge curve.This characterizes corresponding when storage battery discharges the load after access load with reference to discharge curve
Discharge voltage and discharge time, then by obtained reference discharge curve update primary standard discharge curve.
Certainly, the electric discharge total amount of this electric discharge of the storage battery is also characterized in this refers to discharge curve.Specifically, obtain
The method of electric discharge total amount into storage battery this discharge process is as follows：
According to the discharge current value during the battery discharging of K record and discharge time interval, storage battery is obtained
Current total capacity Cf, the current total capacity CfIt can be but not limited to be obtained according to formula below：
Wherein, the total degree that K starts to record into electric discharge terminal procedure for electric discharge, I1For the storage battery of first record
Discharge current value, IKFor the current value of the storage battery of kth record, T1For the discharge time interval of first record, TKFor K
The discharge time interval of secondary record.What above-mentioned formula to be obtained is the electric discharge that electric discharge starts to electric discharge to record every time between terminating
Between current value and time interval product and.
In the practical application of storage battery, since once complete discharge process can't put all electricity of storage battery
Fall, when battery discharging reaches blanking voltage, can also have electricity of guaranteeing the minimum in storage battery, therefore obtained storage battery is currently total
Capacity CfThe residual capacity charge for storage battery next time after is just estimated, and cannot be entirely as all residues of storage battery
Electricity, such CfIt is exactly the residual capacity that storage battery should have after this electric discharge completion and then secondary charging saturation.To the greatest extent
With the performance degradation of storage battery, the capacity after the saturation that charges every time may decrease pipe, but by immediate last time
Electric discharge total amount estimates the residual capacity after charging for next time, in engineering practice still more accurately, can be used as storage battery
Subsequent control and the reference data of performance evaluation.
Further, according to above-mentioned rule, in the electric discharge total amount C that storage battery is calculated in thisfAfterwards, when the storage battery
Charging saturation and when discharging again, can use the total amount C that dischargesfRemained in real time to calculate the storage battery in discharge process again
Covolume amount, that is to say, that when storage battery is carrying out second and is discharging, the calculating for storage battery current residual electricity will be
CfOn the basis of obtain.I.e.：In current total capacity CfOn the basis of every 1 minute or 2
The recording mode at the current remaining capacity in minute calculating accumulator discharge process, its discharge current value and discharge time interval
It is identical with the process of the first electric discharge, just do not repeating, certainly after second of electric discharge is completed or needing to storing herein
The electric discharge total amount of battery is calculated again, is then discharged the electric discharge total amount in second of discharge process as third time
The residual capacity of journey.Obviously, the detection of accumulator capacity can circulate execution in this way, that is to say, that discharge process each time
Processing mode be essentially identical, the electric discharge total amount simply obtained can progressively change.
In embodiments of the present invention in the discharge process each time of storage battery, it is spaced according to setting and obtains storage battery to negative
K discharge current value and the corresponding discharge time interval of each discharge current value when placing is electric, according to K discharge current value
And corresponding discharge time interval determine this discharge process after electric discharge total amount, and by this electric discharge total amount estimate for
Residual capacity after storage battery charging next time, the detection that situation about so being loaded in storage battery access can also be more accurate
Go out the electric discharge total amount after storage battery discharges every time, which is the remaining appearance after storage battery charging complete next time
Amount, and then realize storage battery and remaining battery capacity is detected in the case where accessing power-supply system, improve electric power storage
The accuracy and real-time of tankage detection.
In addition, in order to ensure more can accurately obtain the residual capacity of storage battery after electric discharge terminates, therefore
It can judge whether the storage battery has reached standard discharge voltage after battery discharging terminates in the embodiment of the present invention, such as
When storage battery discharges completely, discharge voltage can be reduced to 43.2V, if the discharge cut-off voltage of the storage battery in practical applications is
43.2V, then can carry out that remaining battery capacity is calculated according to the method in above-described embodiment；If the storage battery is in reality
When discharge cut-off voltage in is 45V, then the storage battery corresponding electric discharge total amount when determining to discharge into 45V first, so
The total electricity in standard reference data between 45V-43.2V is added afterwards（I.e.：45V-43.2V in the storage battery standard discharge curve
Between total electricity）, the final electric discharge total amount of the storage battery after the completion of this electric discharge finally obtained, and the electric discharge total amount is made
For the residual capacity after storage battery charging next time.
Further, which can be generated in present load according to the discharge current value of record and discharge time interval
Reference discharge curve under current value, and standard of the discharge curve more new accumulator under present load current value is referred to according to this
Discharge curve, specifically, if the storage battery output voltage has reached standard discharge voltage after this electric discharge, then should
The discharge process of the storage battery can be completely embodied with reference to discharge curve；If the storage battery exports after this electric discharge
When voltage is not up to standard discharge voltage, then combined standard discharge curve is needed when generation refers to discharge curve, such as, this
Magnitude of voltage after secondary battery discharging is 45V, and standard discharge voltage is 43.2V, then the data between 45V-43.2V will
Use the normal data in standard discharge curve, that is to say, that the data between 45V-43.2V will not be updated, and joined
Examine discharge curve just more can accurately obtain the residual capacity of storage battery afterwards, and by reference to the renewal of discharge curve
Record the degree of aging of storage battery and the change of total capacity, so as to accurately reflect the service condition of storage battery with
And use state.
In addition, if storage battery is when discharging first load, first has to be discharged according to the standard of the storage battery and join
Number determines the standard discharge curve of the storage battery, and determines that the storage battery is corresponding in present load according to standard discharge parameter
Discharge capacity under load current value, such as using nominal voltage as 12V, C10Capacity is the CSB GPL121000 plumbic acids of 100AH
Exemplified by storage battery, the constant-current discharge parameter of the lead-acid accumulator is as shown in table 3：
Table 3
The parameter value that can be seen that the lead-acid accumulator is corresponding under different discharge currents in table 3, according to upper
The parameter value stated can obtain standard discharge curve table as shown in Figure 2, and standard curve in fig. 2 is characterized in different electric discharges
Storage battery discharge time corresponding after specified discharge voltage is reached under electric current.
The size for the load current value that load can be connect by the lead-acid accumulator based on above-mentioned discharge curve is linear
Be fitted lead-acid accumulator reference discharge curve and lead-acid accumulator discharge capacity, or with lead-acid accumulator for example,
When the load current value that the lead-acid accumulator connects load is 16A, ambient temperature is 25 DEG C, and 16A is located in table 1 first
5hr（5 hour rates）And 8hr（8 hour rates）Discharge current between, and the discharge cut-off voltage of 5hr and 8hr is all 1.70V,
When storage battery is discharged using 5hr 1.70V the corresponding electric current of blanking voltage as 18.1A, the capacity of electric discharge for 18.1*5=
90.5Ah, when battery is discharged using 8hr 1.70V blanking voltage electric current as 12.3A, discharge capacity at this time for 8*12.3=
98.4Ah, so the corresponding electric discharge total amounts of 16A arePass through the meter
Calculation mode can obtain that when storage battery uses first electric discharge total amount can be released, and the above process is feelings of the load current in 16A
The electric discharge total amount of the storage battery estimated under condition, if the current value of the storage battery external load is 11A, which is located at
Between 8hr and 10hr, and the discharge cut-off voltage of the storage battery is 1.80V, so be can be obtained by under the blanking voltage
The corresponding discharge current values of 8hr are 11.9A, its capacity is 8*11.9A=95.2Ah, and the corresponding discharge current values of 10hr are
10.0A, its capacity are 10*10.0A=100Ah, so the corresponding electric discharge total amounts of 10A are：
In normal temperature, i.e., the electric discharge total amount that aforesaid way obtains is：Maximum pd quantity at 25 DEG C, if ambient temperature
When being exactly 25 DEG C, then the discharge capacity is exactly the actual discharge total amount of the storage battery, if ambient temperature is not normal temperature
When, then need to be adjusted obtained electric discharge total amount, specific adjustment process is as follows：
Ambient temperature t is obtained first, is then based on ambient temperature t and computing mode Cr=Ce× [1+k × (t-25)]
To actual discharge total amount Co, wherein t is ambient temperature, and k is temperature coefficient, and the temperature coefficient is not under different electric discharge hour rates
It is identical, during present discharge rate >=10hr, when k=0.006,1hr≤present discharge rate ＜ 10hr, k=0.008, present discharge rate ＜
During 1hr, k=0.01.So based on different ambient temperatures and different discharge rates, temperature coefficient k is different value.Than
It is 30 DEG C such as to say ambient temperature, and load current is 16A, and discharge rate at this time is located at 5hr between 8hr, therefore temperature system
Number coefficient k=0.008, obtained actual discharge total amount Co=93 × [1+0.008 × (30-25)]=96.72Ah, so that by upper
The temperature-compensating stated can obtain the actual discharge total amount of the storage battery in the case where load is 16A, ambient temperature is 30 DEG C
CoFor 96.72Ah.
Actual discharge total amount C before storage battery discharges for the first time can be obtained by the above processo, obtaining CoAfterwards,
And when storage battery starts the first electric discharge, according to the record rule discharge current value in above-described embodiment and between discharge time
Every, while the current remaining capacity of storage battery can also be obtainedThat is storage battery
Electric discharge total amount in discharge process is exactly Co。
Certainly, it can be obtained by the first of the storage battery after discharge current value and discharge time interval record are completed
Residual capacity after the completion of secondary electric discharge, i.e.,：C in above-described embodimentf, the mode specifically calculated just repeats no more.
, can be by being carried in storage battery in embodiments of the present invention when storage battery is to discharge for the first time load
The current value of the parameter and storage battery of confession currently connect load estimates out the maximum being capable of providing when storage battery discharges for the first time
Discharge capacity, then supplements the maximum pd quantity that can determine that storage battery is capable of providing under Current Temperatures by temperature, this
Sample is achieved that the real-time detection of storage battery capacity under different scenes.
A kind of method that remaining battery capacity is estimated in the embodiment of the present invention is corresponded to, is additionally provided in the embodiment of the present invention
The device that a kind of remaining battery capacity is estimated, is illustrated in figure 3 a kind of remaining battery capacity in the embodiment of the present invention and estimates
Apparatus structure schematic diagram, including：
Logging modle 301, in the discharge process each time of storage battery, is spaced according to setting and obtains storage battery to negative
K discharge current value of placing electricity and the corresponding discharge time interval of each discharge current value, discharge time is at intervals of this
Discharge current value and the last time interval obtained between discharge current value are obtained, K is the positive integer more than or equal to 2.
Determining module 302, for after this discharge process, according to K discharge current value and corresponding electric discharge
Time interval determines the electric discharge total amount of this discharge process.
Processing module 303, after the electric discharge total amount of this discharge process is estimated as storage battery charging next time
Residual capacity.
Further, logging modle 301 is specifically used for when the storage battery starts to load discharge, described in first record
Storage battery discharge start when discharge current value and discharge time interval, judge the battery tension decrement whether
More than threshold value, if the decrement of the battery tension exceedes threshold value, obtain the current discharge current value of the storage battery with
And the time interval between last acquisition discharge current value, and obtain K current value during the battery discharging
And between K discharge time.
Further, as shown in figure 4, the device further includes：
Acquisition module 401, is connected with logging modle 301, for obtaining storage battery last time discharge process after obtain
Electric discharge total amount Cr；
Electricity determining module 402, for obtaining storage battery after each prefixed time interval according to prefixed time interval
Current remaining capacityAnd record the current residual appearance that storage battery is calculated every time
Amount, wherein, CkCurrent remaining capacity for the storage battery obtained after each prefixed time interval, I1For first record
Discharge current value, T1For the discharge time interval of first record, k is the record of discharge current value in prefixed time interval
Number, IkFor the discharge current value of kth time record, TkFor the discharge time interval of kth time record.
Further, determining module 302 specifically includes：
Identifying unit, at the end of battery discharging, judging whether storage battery is secondary discharge, if it is not, then judging
Whether the magnitude of voltage after the completion of battery discharging is less than preset voltage value；
Processing unit, for that when the magnitude of voltage after the completion of battery discharging is less than preset voltage value, then will be put according to K
Electric current value and corresponding discharge time interval determine this discharge process after electric discharge total amount.
Further, processing module 303 be specifically used for according to K discharge current value of record and K discharge time interval,
Obtain storage battery this electric discharge after electric discharge total amountWherein, CfIt is total for battery discharging
Amount, K be record total number, I1For the discharge current value of first record, IKFor the discharge current value of kth record, T1For
The discharge time interval once recorded, TKFor the discharge time interval of kth record.
Further, determining module 302 includes in the embodiment of the present invention：
Generation unit, for according to the K discharge current value and corresponding discharge time interval, generating described in corresponding to
K discharge current value and the reference discharge curve at interval of corresponding discharge time；
Determination unit, for referring to discharge curve more new standard discharge curve according to described, and determines described with reference to electric discharge
The corresponding electric discharge total amount of curve.
The present invention be with reference to according to the method for the embodiment of the present invention, equipment（System）And the flow of computer program product
Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or square frame in journey and/or square frame and flowchart and/or the block diagram.These computer programs can be provided
The processors of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices, which produces, to be used in fact
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided and is used for realization in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a square frame or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make these embodiments other change and modification.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and scope.In this way, if these modifications and changes of the present invention belongs to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these modification and variations.
Claims (8)
- A kind of 1. predictor method of remaining battery capacity, it is characterised in that including：In the discharge process each time of storage battery, K electric discharge electricity when obtaining storage battery to load discharge is spaced according to setting Flow valuve and the corresponding discharge time interval of each discharge current value, the discharge time is at intervals of this acquisition discharge current value With the last time interval obtained between discharge current value, K is the positive integer more than or equal to 2；After this discharge process, this is determined according to the K discharge current value and corresponding discharge time interval The electric discharge total amount of discharge process；Residual capacity after the electric discharge total amount of this discharge process is estimated as storage battery charging next time；Wherein, determine that the electric discharge of this discharge process is total according to the K discharge current value and corresponding discharge time interval Amount, including：According to the K discharge current value and corresponding discharge time interval, the corresponding K discharge current value of generation and Correspond to the reference discharge curve at discharge time interval；Discharge curve more new standard discharge curve is referred to according to described, and is determined described total with reference to the corresponding electric discharge of discharge curve Amount；Wherein, after determining this discharge process according to the K discharge current value and corresponding discharge time interval Electric discharge total amount, further includes：At the end of the battery discharging, judge whether the storage battery is secondary discharge；If it is not, then judging whether the magnitude of voltage after the completion of the battery discharging is not more than preset voltage value；When the magnitude of voltage after the completion of the battery discharging is not more than the preset voltage value, then according to described K electric discharge electricity Flow valuve and corresponding discharge time interval, determine the electric discharge total amount after this discharge process；When the magnitude of voltage after the completion of the battery discharging is more than the preset voltage value, then according to the K discharge current Value, corresponding discharge time interval, the preset voltage value and the standard discharge curve, determine that this discharge process terminates Electric discharge total amount afterwards.
- 2. the method as described in claim 1, it is characterised in that be spaced according to setting and obtain storage battery K to load discharge Discharge current value, including：When the storage battery starts to load discharge, storage battery described in first record is in discharge current value when starting that discharges And discharge time interval；Judge whether the decrement of the battery tension exceedes threshold value, if the decrement of the battery tension exceedes threshold value, The current discharge current value of the storage battery and the time interval between last acquisition discharge current value are then obtained, and is obtained K current value during to the battery discharging and K discharge time interval.
- 3. the method as described in claim 1, it is characterised in that obtain K of the storage battery to load discharge being spaced according to setting During a discharge current value, further include：The electric discharge total amount C obtained after obtaining the storage battery last time discharge processr；Current remaining capacity of the storage battery after each prefixed time interval is obtained according to prefixed time intervalAnd the current remaining capacity that the storage battery is calculated every time is recorded, wherein, Ck Current remaining capacity for the storage battery obtained after each prefixed time interval, I1For the discharge current of first record Value, T1For the discharge time interval of first record, k is the record number of discharge current value in the prefixed time interval, IkFor The discharge current value of kth time record, TkFor the discharge time interval of kth time record.
- 4. the method as described in claim 1, it is characterised in that during according to the K discharge current value and corresponding electric discharge Between be spaced determine this discharge process after electric discharge total amount, including：According to K discharge current value of record and K discharge time interval, obtain the storage battery this electric discharge after Electric discharge total amountWherein, CfFor battery discharging total amount, K is the total number of record, I1For first The discharge current value of secondary record, IKFor the discharge current value of kth record, T1For the discharge time interval of first record, TKFor The discharge time interval of kth record.
- A kind of 5. estimating device of remaining battery capacity, it is characterised in that including：Logging modle, in the discharge process each time of storage battery, being spaced according to setting and obtaining storage battery to load discharge K discharge current value and the corresponding discharge time interval of each discharge current value, the discharge time obtained at intervals of this Discharge current value and the last time interval obtained between discharge current value are taken, K is the positive integer more than or equal to 2；Determining module, for after this discharge process, according to the K discharge current value and corresponding discharge time Interval determines the electric discharge total amount of this discharge process；Processing module, for this discharge process electric discharge total amount to be estimated to the remaining appearance after charging next time for the storage battery Amount；Wherein, the determining module includes：Generation unit, for corresponding K described according to the K discharge current value and corresponding discharge time interval, generation Discharge current value and the reference discharge curve at interval of corresponding discharge time；Determination unit, for referring to discharge curve more new standard discharge curve according to described, and determines described to refer to discharge curve Corresponding electric discharge total amount；Wherein, the determining module further includes：Identifying unit, at the end of the battery discharging, judging whether the storage battery is secondary discharge, if it is not, then Judge whether the magnitude of voltage after the completion of the battery discharging is not more than preset voltage value；Processing unit, for when the magnitude of voltage after the completion of the battery discharging is not more than the preset voltage value, then basis The K discharge current value and corresponding discharge time interval, determine the electric discharge total amount after this discharge process；Work as institute When stating the magnitude of voltage after the completion of battery discharging and being more than the preset voltage value, then according to the K discharge current value, corresponding Discharge time interval, the preset voltage value and the standard discharge curve, determine the electric discharge after this discharge process Total amount.
- 6. device as claimed in claim 5, it is characterised in that the logging modle is specifically used in the storage battery to load When electric discharge starts, storage battery described in first record is in discharge current value and the discharge time interval when starting of discharging, judgement Whether the decrement of the battery tension exceedes threshold value, if the decrement of the battery tension exceedes threshold value, obtains institute The current discharge current value of storage battery and the time interval between last acquisition discharge current value are stated, and obtains the storage K current value in battery discharge procedure and K discharge time interval.
- 7. device as claimed in claim 5, it is characterised in that further include：Acquisition module, for obtaining the storage battery last time discharge process after obtained electric discharge total amount Cr；Electricity determining module, it is current after each prefixed time interval for obtaining the storage battery according to prefixed time interval Residual capacityAnd the current remaining capacity that the storage battery is calculated every time is recorded, Wherein, CkCurrent remaining capacity for the storage battery obtained after each prefixed time interval, I1For putting for first record Electric current value, T1For the discharge time interval of first record, k is the record of discharge current value in the prefixed time interval Number, IkFor the discharge current value of kth time record, TkFor the discharge time interval of kth time record.
- 8. device as claimed in claim 5, it is characterised in that the processing module is specifically used for according to K of record electric discharge Current value and K discharge time interval, obtain the storage battery this electric discharge after electric discharge total amountWherein, CfFor battery discharging total amount, K is the total number of record, I1For first record Discharge current value, IKFor the discharge current value of kth record, T1For the discharge time interval of first record, TKRemember for kth The discharge time interval of record.
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| CN106546921B (en) * | 2015-09-18 | 2020-07-28 | 深圳力维智联技术有限公司 | Method and device for updating battery capacity of storage battery |
| CN107037367A (en) * | 2017-01-13 | 2017-08-11 | 孔文欣 | Battery uses the measuring method and measuring system of electricity |
| CN109088737B (en) * | 2017-06-14 | 2021-02-23 | 上海华为技术有限公司 | Oil engine energy saving method, related equipment and system |
| CN107369474B (en) * | 2017-07-31 | 2020-07-24 | 苏州浪潮智能科技有限公司 | Method and system for detecting electricity storage battery |
| CN109407005B (en) * | 2018-09-14 | 2020-11-10 | 昆兰新能源技术常州有限公司 | Dynamic and static correction method for residual electric quantity of energy storage battery |
| CN109828221B (en) * | 2018-12-30 | 2022-01-21 | 武汉昊诚锂电科技股份有限公司 | Method for rapidly determining discharge capacity of lithium/manganese dioxide battery |
| CN111257758B (en) * | 2020-02-28 | 2022-02-11 | 杭州安脉盛智能技术有限公司 | SOH estimation method for emergency lead-acid storage battery of power station |
| CN111521945B (en) * | 2020-05-06 | 2022-04-08 | 美智纵横科技有限责任公司 | Battery health state detection method and device, electronic equipment and storage medium |
| CN113711458A (en) * | 2020-11-27 | 2021-11-26 | 东莞新能德科技有限公司 | Battery capacity estimation method, electronic device, and storage medium |
| CN116774057B (en) * | 2023-08-18 | 2023-11-14 | 南京大全电气研究院有限公司 | Method and device for training battery life prediction model and predicting battery life |
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