CN103884983B - The control methods of accumulator property - Google Patents
The control methods of accumulator property Download PDFInfo
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- CN103884983B CN103884983B CN201210552338.9A CN201210552338A CN103884983B CN 103884983 B CN103884983 B CN 103884983B CN 201210552338 A CN201210552338 A CN 201210552338A CN 103884983 B CN103884983 B CN 103884983B
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Abstract
The present invention relates to a kind of control methods of accumulator property, methods described includes：Collection battery operational data in continuous and long under working long hours；According to it is described long when operational data obtain the battery it is long when working curve；Gather battery work at present data after maintenance processing；The work at present curve of the battery is obtained according to the work at present data；Using it is described long when operational data and work at present data comparison, and when long working curve and work at present curve obtain accumulator property comparison information.The control methods of accumulator property of the present invention obtains the comparison of the performance of battery service before and after treatment according to the historical data and current data of the battery collected, so as to learn the effect of detection battery service.
Description
Technical field
The present invention relates to a kind of control methods of accumulator property, it is especially a kind of using it is long when detection data progress electric power storage
The method of pond performance comparison.
Background technology
Battery is required for using in many occasions, and battery is typical dummy device, adds enormous amount, and shows
There is technology not without complete Battery Performance Testing means.So adaptive processes can not be carried out, so as to cause electric power storage
The short life in pond.
Existing method does not have the collection of battery long term data, so as to can not possibly be carried out to the situation and failure of battery
Targetedly maintenance is handled, and can not effectively learn the effect after battery service processing.
The content of the invention
The purpose of the present invention be the defect for prior art there is provided the control methods of accumulator property, using it is long when
Between the data that collect, obtain the comparison of the performance of battery service before and after treatment.
To achieve the above object, the invention provides a kind of control methods of accumulator property, methods described includes：
Collection battery operational data in continuous and long under working long hours；
According to it is described long when operational data obtain the battery it is long when working curve；
Gather battery work at present data after maintenance processing；
The work at present curve of the battery is obtained according to the work at present data；
Using it is described long when operational data and work at present data comparison, and working curve and work at present are bent when long
Line obtains the information of accumulator property comparison.
The control methods of accumulator property of the present invention is obtained according to the historical data and current data of the battery collected
The comparison of the performance of battery service before and after treatment, so as to learn the effect of detection battery service.
Brief description of the drawings
Fig. 1 is the flow chart of the control methods of accumulator property of the present invention.
Embodiment
Below by drawings and examples, technical scheme is described in further detail.
Fig. 1 is the flow chart of the control methods of accumulator property of the present invention, as illustrated, the present invention specifically includes following step
Suddenly：
Step 101, collection battery operational data in continuous and long under working long hours；
Specifically, every Fixed Time Interval gather battery working long hours under it is long when operational data.
For example, being stored using data acquisition device by suitable time interval (such as collection in every 8 minutes is once) acquisition and recording
The service data of battery, with the corresponding moment of the record gathered data of cloth.The data of collection include but is not limited to：Voltage, electric current,
Temperature.
Step 102, according to it is described long when operational data obtain the battery it is long when working curve
The collection of operational data focuses on the data that long-term follow records each dimension, and vertical analysis data improve number
According to trackability.Power failure data can be recorded from different dimensions, such as, by area record, record, remember by power off time by month
Record, power failure data include but is not limited to above dimension.
The operational data collected is treated as the curve of the working curve of battery, including but not limited to voltage-vs-time
Figure, the curve map of current-vs-time, the curve map of Temperature-time, the curve map in power failure duration-area, and in same figure
The hybrid parameter curve map of displaying.
Step 103, battery work at present data after collection maintenance processing；
Step 104, the work at present curve of the battery is obtained according to the work at present data；
With step 101 and the similar approach of step 102, the current work of battery can be obtained by step 103 and step 104
Make curve.
Step 105, using it is described long when operational data and work at present data comparison, and when long working curve and work as
Preceding working curve obtains the information of accumulator property comparison.
Specifically, using it is described long when operational data and work at present data comparison specifically, utilizing battery
Battery before T48, T90, C48 and redundancy duration information are to safeguarding and after maintenance, which is compared, obtains comparison information.Respectively
Parameters value before and after safeguarding is calculated, is contrasted.If T48, C48 and the increase of redundancy duration, show that effect is after safeguarding
Lifting.
The data collected are subjected to finishing analysis, running status and battery performance can be identified by finding some by algorithm
Parameter.E.g., including but it is not limited to T48, T90, C48 and redundancy duration etc..Battery before to safeguarding and after maintenance
T48, T90, C48 and redundancy duration data are compared, and obtain comparison information.
Batteries T48 electric discharge durations：Power supply unit where batteries, when occurring power-off fault, by batteries
Difference at the time of total voltage drops to 48V is exported with storage battery system at the time of starting electric discharge, the value is called batteries
T48 electric discharge durations, unit is hour.
Batteries T90 electric discharge durations：Batteries location (district level), when occurring power-off fault, less than 90%
Power failure duration be less than a certain value, the value be called batteries T90 discharge duration, unit is hour.
This index is statistical significance, therefore corresponding theory is the central-limit theorem in probability theory.Computationally, lead to
The average and standard deviation for the distribution for calculating a certain regional power failure duration are crossed, then looking into standardized normal distribution table can find corresponding
T90 values.The blackout condition extracted by Long-term analysis driven torus, it has been found that power failure is regular predictable, and is accorded with very much
Normal distribution curve is closed, if energy long-term follow, and the historical data in former years is combined, the grid condition in each region can be carried out
Anticipation, and classification burst prevention in advance.The T90 data are after small probability event and natural power-off event is removed, to the network
In all power supply units most I discharge duration being distinctly claimed from data, to emphasis station, normal station, difficult point station
The increase different prolongation can propose clearly to require to the battery backup duration of all power supply units.This can be reached
Duration, theoretically i.e. it is believed that only 10% blackout condition may need to generate electricity.
Batteries C48 definition：The output total voltage of batteries drops to releasing capacity during 48V, and this index is
Occurrence.
The foundation for being turned to judge battery downward trend in practice with C48 change (in maintenance, is relatively easily accomplished
Battery discharging curve before arrival 48V is substantially linear or predictable), during the maximum power failure of tracking single station a period of time
T48 and C48 variation tendencies in section, it is possible to achieve lateral comparison and judgement to the overall back-up source situation of the whole network.
The definition of power supply unit batteries redundancy duration：When batteries T48 discharges duration with power supply unit T90 electric discharges
Long difference, as batteries redundancy duration, unit is hour.
Specifically, using it is long when working curve and work at present curve obtain accumulator property comparison information.
Analysis to various dimension curves and compare, incorporating parametric value and theoretical research can determine that the performance of battery.
The performance of battery is mainly weighed by the change of capacity.The data provided according to early stage, we can find
The method for measuring accumulator capacity.Discharged by ten hour rates of standard, be directed to 2 volts of cell, discharge into 1.8 volts and put
The energy gone out is existing capacity.The tendency of curve by the volt-time curve figure of record, can be observed, passes through estimation substantially
Go out time T. corresponding when discharging into 1.8 volts.By measure=electric current * times.It can calculate and have capacity.Ordinary circumstance
Under, the 80% of existing capacity ＜ nominal capacitys is believed that poor performance.Electricity also can be further analyzed for the battery of poor performance
The failure in pond, finds the factor of reduction battery performance.
Specific compare includes：
1st, capacity comparison：Profit calculates the capacity for safeguarding front and rear battery, analytical performance change；
2nd, curve comparison：From anterioposterior curve contrast is safeguarded, analysis accumulator property changes；
Obtained curve map is tracked according to long term data, the rule of depth analysis is carried out：
The voltage-time curve when working curve is voltage stabilization；The performance information according to the battery
Data analysis is carried out, the fault message and processing information for obtaining battery are specifically included：
When the voltage-time curve is slowly reduced, battery fault-free information is exported；
When the voltage-time curve is parabola, there are backward cell batteries information, Yi Jigeng in output battery
Change the backward cell batteries information；
When having flex point in the voltage-time curve, there is partial monosomy battery to discharge in output battery
Information is finished, and changes discharge off battery information.
The working curve is two group storage batteries and alliance discharge current-time graph when electric current is stable；The basis
The performance information of the battery carries out data analysis, and the fault message and processing information for obtaining battery are specifically included：
When the current versus time curve leading portion has electric current bifurcated, the big information of one group storage battery internal resistance of output, and
The information of the screw of the elastic big internal resistance battery；
When the current versus time curve back segment has electric current bifurcated, two group storage battery performances of output are unbalanced, there is one group
The less information of storage battery practical capacity.
For curve map analytical performance and the rule of failure, including but not limited to case above.
The control methods of accumulator property of the present invention is obtained according to the historical data and current data of the battery collected
The comparison of the performance of battery service before and after treatment, so as to learn the effect of detection battery service.
The detection method of accumulator property of the present invention according to the historical data and current data of the battery collected, according to
The data can be obtained by the performance state of battery, carry out corresponding processing.The refinement maintenance of battery is reached, is prolonged
The service life of long battery, saves cost.
Professional should further appreciate that, each example described with reference to the embodiments described herein
Unit and algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, hard in order to clearly demonstrate
The interchangeability of part and software, generally describes the composition and step of each example according to function in the above description.
These functions are performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.
Professional and technical personnel can realize described function to each specific application using distinct methods, but this realize
It is not considered that beyond the scope of this invention.
The method that is described with reference to the embodiments described herein can use hardware, computing device the step of algorithm
Software module, or the two combination are implemented.Software module can be placed in random access memory (RAM), internal memory, read-only storage
(ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field
In any other form of storage medium well known to interior.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. all should be included
Within protection scope of the present invention.
Claims (3)
1. a kind of control methods of accumulator property, it is characterised in that methods described includes：
Collection battery operational data in continuous and long under working long hours；
According to it is described long when operational data obtain the battery it is long when working curve；
Gather battery work at present data after maintenance processing；
The work at present curve of the battery is obtained according to the work at present data；
Using it is described long when operational data and work at present data comparison, and working curve and work at present curve are obtained when long
The information compared to accumulator property；
It is described using it is described long when operational data and work at present data comparison specifically, using battery T48 discharge when
Before long, T90 electric discharges duration, batteries C48 and power supply unit batteries redundancy duration information are to safeguarding and after maintenance
Battery, which is compared, obtains comparison information；Parameters value before and after safeguarding is calculated respectively, is contrasted；
Voltage-time curve when working curve is voltage stabilization when described long：
When the voltage-time curve is slowly reduced, battery fault-free information is exported；
When the voltage-time curve is parabola, there is backward cell batteries information in output battery；
When having flex point in the voltage-time curve, there is partial monosomy battery discharge off in output battery
Information；
Working curve is two group storage batteries and alliance discharge current-time graph when electric current is stable when described long：
When the current versus time curve leading portion has electric current bifurcated, the big information of one group storage battery internal resistance of output, and have
Fall behind the information of cell batteries；
When the current versus time curve back segment has electric current bifurcated, two group storage battery performances of output are unbalanced, there is one group of electric power storage
The less information of pond actual capacity；
Power supply unit where a length of batteries is when occurring power-off fault during the T48 electric discharges of the battery, by batteries
Difference at the time of total voltage drops to 48V is exported with storage battery system at the time of starting electric discharge, unit is hour；
A length of batteries location during the T90 electric discharges, when occurring power-off fault, less than 90% power failure duration, which is less than, to be set
Fixed value, unit is hour；
The batteries C48 drops to releasing capacity during 48V for the output total voltage of batteries；
A length of batteries T48 electric discharge durations and power supply unit T90 electric discharge durations during said supply unit batteries redundancy
Difference, unit is hour.
2. the control methods of accumulator property according to claim 1, it is characterised in that the collection battery is continuous
With work long hours under it is long when operational data specifically, every Fixed Time Interval collection battery working long hours under
Operational data when long.
3. the detection method of accumulator property according to claim 1, it is characterised in that operational data and work as when described long
Preceding operational data is specially the voltage, electric current and temperature of battery；Working curve and work at present curve dimension bag when described long
Include battery location information, recording time information and power off time information.
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| CN104569847A (en) * | 2015-01-28 | 2015-04-29 | 国网冀北电力有限公司电力科学研究院 | Lithium battery performance evaluation method and device |
| CN111555417B (en) * | 2020-07-10 | 2020-10-30 | 深圳小木科技有限公司 | New energy automobile and battery management method for supplying power to load on automobile by battery pack of new energy automobile |
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