CN105242211B - A kind of all-vanadium flow battery failure quickly detects localization method - Google Patents

A kind of all-vanadium flow battery failure quickly detects localization method Download PDF

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CN105242211B
CN105242211B CN201510558179.7A CN201510558179A CN105242211B CN 105242211 B CN105242211 B CN 105242211B CN 201510558179 A CN201510558179 A CN 201510558179A CN 105242211 B CN105242211 B CN 105242211B
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flow battery
curve
vanadium flow
collection voltages
value
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CN105242211A (en
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李爱魁
刘纳
袁晓冬
刘飞
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Wuhan NARI Ltd
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
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Wuhan NARI Ltd
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
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Abstract

The present invention provides a kind of all-vanadium flow battery failure and quickly detects localization method, includes the following steps: the characteristic standard curve for formulating all-vanadium flow battery charge-discharge parameter;By having monitoring system acquisition parameter data by oneself;The case where deviateing the characteristic standard curve according to the supplemental characteristic of acquisition judges whether all-vanadium flow battery breaks down and abort situation and type.The present invention by all-vanadium flow battery have by oneself monitoring system acquisition supplemental characteristic based on, by being compared with characteristic standard curve, through analysis can quickly obtain all-vanadium flow battery abort situation and type, have many advantages, such as simply, conveniently, control easy to operate.

Description

A kind of all-vanadium flow battery failure quickly detects localization method
Technical field
The present invention relates to energy-storage battery technical fields, and in particular to a kind of all-vanadium flow battery failure quickly detects positioning side Method.
Background technique
All-vanadium flow battery and conventional accumulators have apparent difference, and the active material of conventional accumulators is inclusive in solid Within state electrode, and the positive and negative electrode active material of all-vanadium flow battery is primarily present in electrolyte, use containing just, The electrolyte of negative electrode active material is attached separately in two fluid reservoirs.All-vanadium flow battery is positive with vanadium ion solution, negative electrode active Substance, anode are that V (IV)/V (V) electricity is right, and cathode is then that V (III)/V (II) electricity is right, and the solvent used is dilute sulfuric acid, anode Electrolyte is the sulfuric acid solution of V (V) and V (IV), and electrolyte liquid is V (III)/V (II) sulfuric acid solution.Ideally, electric After pond is fully charged, positive solution all V (V) sulfate ion solution, negative solution all V (II) sulfuric acid solution, open circuit electricity Position more 1.6V.When all-vanadium flow battery works, all-vanadium flow battery is circulated through by liquid-feeding pump, in all-vanadium flow battery Positive and negative electrode electrolyte is separated by amberplex.
Currently, battery fault detection method is mainly for battery, vehicle mounted dynamic battery, fuel cell, sodium-sulphur battery etc. Common batteries, there are no the methods specifically for all-vanadium flow battery fault detection.Chinese Patent Application No. 03133008.8 is public The fuel cell system fault detection method and device opened are that multiple fuel cell measurements are corresponding to multiple range limits Boundary is compared to generate multiple range flags;Differential fuel cell measurements are to generate multiple fuel cell change rates;Combustion Material battery change rate is compared to generate multiple change rate labels to the corresponding boundary of multiple change rate boundaries;With range mark Note and change rate label are classified to generate fault detection judgement.Chinese Patent Application No. 201010000234.8 is disclosed to be stored The method and apparatus of battery failures monitoring maintenance, are capacity, charge and discharge and the temperature parameter for detecting single battery;According to ginseng Number judges the fault type of the cell batteries to break down;According to fail result, is alerted and handled.Chinese patent Shen Please power battery fault detection method and detection system disclosed in numbers 201010202486.9, be by voltage detecting circuit, point Not Jian Ce single battery voltage value, then by window comparator circuit, surveyed voltage value is compared respectively, judges whether to fall in the In one threshold range, when the voltage value of any one section single battery is not in first threshold range, then executive component cutting is controlled Charge-discharge circuit or alarm;When voltage value is in first threshold range, which is converted into voltage digital signal input Temporary storage module, bis- comparing units of MCU are carried out from the maximum voltage value and minimum amount of voltage that chosen in voltage value in temporary storage module Compare for the second time, judges the difference of the two whether within the scope of second threshold, when difference is not within the scope of second threshold, control is held Units cut off charge-discharge circuit or alarm.
The above-mentioned prior art is all with voltage change ratio, Capacitance Shift Rate, rate of temperature change etc. for parameter, by single Parameters variation situation judges common batteries failure, however, all-vanadium flow battery is different from common batteries, reacting environment and activity Substance be it is separated, only one Parameters variation of voucher, can not quickly detect all-vanadium flow battery fault type.
Summary of the invention
The object of the present invention is to provide a kind of all-vanadium flow battery failures quickly to detect localization method, with all-vanadium flow battery Based on the supplemental characteristic of own monitoring system acquisition, by being compared with characteristic standard curve, can be quick through analysis All-vanadium flow battery abort situation and type out.
To achieve the goals above, The technical solution adopted by the invention is as follows:
A kind of all-vanadium flow battery failure quickly detects localization method, includes the following steps: that formulating all-vanadium flow battery fills The characteristic standard curve of discharge parameter;By having monitoring system acquisition parameter data by oneself;Deviate institute according to the supplemental characteristic of acquisition The case where stating characteristic standard curve judges whether all-vanadium flow battery breaks down and abort situation and type.
According to above scheme, the characteristic standard curve include voltage curve, current curve, internal drag curve, capacity curve, Efficiency curve, pressure curve, temperature curve and flow curve etc..
According to above scheme, the characteristic standard curve is with positive or negative pole oxidation reduction potential value in charge and discharge for horizontal seat Mark.
According to above scheme, the fault type includes leakage, interior leakage, crystallization, blocking, unbalance, aging.
According to above scheme, when the supplemental characteristic of the acquisition and the characteristic standard curve deviation value are less than 5%, assert All-vanadium flow battery does not break down;When deviation value is greater than or equal to 5%, that is, conclude that event occurs in all-vanadium flow battery Barrier, and then judge abort situation and type.
According to above scheme, the specific judgment method of the fault type are as follows: if occurring collection voltages increasing in charging process Collection voltages decline greatly or in discharge process, and capacity declines, and other parameters are normal, then are unbalance;If going out in charging process Collection voltages decline in existing collection voltages increase or discharge process, and capacity declines, while flow velocity declines, then is blocking;If filling Occurs collection voltages decline in collection voltages increase or discharge process in electric process, and capacity declines, while internal resistance increases, then For aging;If occurring in charging process, collection voltages decline in collection voltages increase or discharge process, and capacity declines, simultaneously Internal resistance increases, and flow velocity declines, and temperature is raised and lowered, then is crystallization;If capacity declines, it is then outer that outside batteries, which have liquid, Leakage;If occurring in charging process, collection voltages decline in collection voltages decline or discharge process, for interior leakage.
The beneficial effects of the present invention are:
1) detection method of the invention it is simple, conveniently, control easy to operate;
2) detection method provided by the invention does not need to add new equipment in original all-vanadium flow battery, only need to be original New bonus point analyses software in monitoring system, and cost is greatly saved;
3) detection method of the invention can quickly position all-vanadium flow battery abort situation and type, be all-vanadium flow electricity Pond fault pre-alarming provides technical support.
Specific embodiment
Technical solution of the present invention is illustrated below with reference to embodiment.
The present invention provides a kind of all-vanadium flow battery failure and quickly detects localization method, includes the following steps:
1) the characteristic standard curve of all-vanadium flow battery charge-discharge parameter is formulated;
All-vanadium flow battery operational process parameter value is transferred by all-vanadium flow battery monitoring system, collate the minutes full vanadium liquid Galvanic battery operational process parameter related data obtains " database ", which includes but is not limited to: voltage, electric current, internal resistance, appearance Amount, efficiency, pressure, temperature, flow, positive oxidation-reduction potential and cathode oxidation reduction potential.
Analysis processing all-vanadium flow battery operation " database ", obtains two of each parameter of all-vanadium flow battery charge and discharge Characteristic standard curve: a curve is with oxidation-reduction potential positive in charge and discharge in two characteristic standard curves of each parameter Value is abscissa, and corresponding parameter value is ordinate;One curve be using cathode oxidation reduction potential value in charge and discharge as abscissa, Corresponding parameter value is ordinate.
The characteristic standard curve includes but is not limited to: voltage curve, current curve, internal drag curve, capacity curve, efficiency Curve, pressure curve, temperature curve and flow curve.
2) by having monitoring system acquisition parameter data by oneself;
By the operation data of suitable time interval (acquisition in such as every 5 minutes is primary) acquisition and recording all-vanadium flow battery, together Shi Jilu acquires corresponding time, positive oxidation-reduction potential and the cathode oxidation reduction potential of data.The supplemental characteristic packet of acquisition It includes but is not limited to: voltage, electric current, internal resistance, capacity, efficiency, pressure, temperature, flow, positive oxidation-reduction potential and cathode oxidation Reduction potential.
By the supplemental characteristic of acquisition, two curves of each parameter of all-vanadium flow battery charge and discharge a: song are drawn out Line is using oxidation reduction potential value positive in charge and discharge as abscissa, and corresponding parameter value is ordinate;One curve is with charge and discharge Cathode oxidation reduction potential value is abscissa in electricity, and corresponding parameter value is ordinate.
3) the case where characteristic standard curve being deviateed according to the supplemental characteristic of acquisition, judge whether all-vanadium flow battery goes out Existing failure and abort situation and type.
Breakdown judge software is installed in computer in advance, according to the working curve of all-vanadium flow battery different parameters, is carried out Data analysis exports different judgement result informations, can also directly carry out manual analysis.
If occurring collection voltages value in charging process greater than 5% or more voltage standard parameter curve value or discharge process Middle collection voltages value drop to voltage standard parameter curve value 95% hereinafter, and acquisition capability value to drop to volumetric(al) standards parameter bent Line value 95% is hereinafter, illustrate that all-vanadium flow battery breaks down, if other parameters are normal, for unbalance failure;
If occurring collection voltages value in charging process greater than 5% or more voltage standard parameter curve value or discharge process Middle collection voltages value drop to voltage standard parameter curve value 95% hereinafter, and acquisition capability value to drop to volumetric(al) standards parameter bent Line value 95% hereinafter, and acquisition flow speed value drop to flow rate calibration parameter curve value 95% hereinafter, then for plugging fault;
If occurring collection voltages value in charging process greater than 5% or more voltage standard parameter curve value or discharge process Middle collection voltages value drop to voltage standard parameter curve value 95% hereinafter, and acquisition capability value to drop to volumetric(al) standards parameter bent Line value 95% hereinafter, and acquisition internal resistance value be greater than 5% or more internal resistance standard parameter curve values, then be degradation failure;
If occurring collection voltages value in charging process greater than 5% or more voltage standard parameter curve value or discharge process Middle collection voltages value drop to voltage standard parameter curve value 95% hereinafter, and acquisition capability value to drop to volumetric(al) standards parameter bent For line value 95% hereinafter, acquisition internal resistance value is greater than 5% or more internal resistance standard parameter curve values, acquisition flow speed value drops to flow rate calibration Parameter curve value 95% hereinafter, and collecting temperature value drop to 95% or less temperature standard parameter curve value or collecting temperature value 5% or more temperature standard parameter curve value is risen to, then is crystallization failure;
If there is acquisition capability value drop to volumetric(al) standards parameter curve value 95% hereinafter, and outside batteries have liquid, It is then leakage;
If occurring collection voltages value in charging process less than voltage standard parameter curve value 95% hereinafter, or discharge process Middle collection voltages value drops to voltage standard parameter curve value 95% hereinafter, being then interior leakage failure.
The above embodiments are only used to illustrate and not limit the technical solutions of the present invention, although above-described embodiment to the present invention into Gone detailed description, the related technical personnel of this field it is understood that can modify to the present invention or replace on an equal basis, but Any modification and part replacement for not departing from spirit and scope of the invention should all be covered in scope of the presently claimed invention.

Claims (3)

1. a kind of all-vanadium flow battery failure quickly detects localization method, which comprises the steps of: formulate full vanadium liquid The characteristic standard curve of galvanic battery charge-discharge parameter;By having monitoring system acquisition parameter data by oneself;According to the parameter number of acquisition The case where according to the characteristic standard curve is deviateed, judges whether all-vanadium flow battery breaks down and abort situation and type;
Above-described all-vanadium flow battery failure quickly detects in localization method, and the characteristic standard curve includes voltage song Line, current curve, internal drag curve, capacity curve, efficiency curve, pressure curve, temperature curve and flow curve;
Features described above standard curve is using positive or negative pole oxidation reduction potential value in charge and discharge as abscissa;
Fault type described above includes leakage, interior leakage, crystallization, blocking, unbalance, aging.
2. all-vanadium flow battery failure according to claim 1 quickly detects localization method, which is characterized in that the acquisition Supplemental characteristic and the characteristic standard curve deviation value less than 5% when, assert all-vanadium flow battery do not break down;When inclined When being greater than or equal to 5% from value, that is, conclude that failure occurs in all-vanadium flow battery, and then judge abort situation and type.
3. all-vanadium flow battery failure according to claim 1 quickly detects localization method, which is characterized in that the failure The specific judgment method of type are as follows: if occurring in charging process, collection voltages decline in collection voltages increase or discharge process, and Capacity decline, and other parameters are normal, then are unbalance;If occurring adopting in collection voltages increase or discharge process in charging process Current collection drops, and capacity declines, while flow velocity declines, then is blocking;If occurring collection voltages increase in charging process, or put Collection voltages decline in electric process, and capacity declines, while internal resistance increases, then is aging;If occurring acquisition electricity in charging process Pressure increase or discharge process in collection voltages decline, and capacity decline, while internal resistance increase, and flow velocity decline, temperature increase or It reduces, is then crystallization;If capacity declines, outside batteries have liquid, then are leakage;If occurring under collection voltages in charging process Collection voltages decline, then be interior leakage in drop or discharge process.
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CN105759212B (en) * 2016-01-27 2019-08-30 惠州市蓝微新源技术有限公司 Battery pack failure simulation method and fault detection method
JP2020502775A (en) * 2016-12-19 2020-01-23 ヴィオンエックス エナジー コーポレイション Systems and methods for electrolyte storage and fault detection in flow batteries
CN106960971B (en) * 2017-04-13 2021-09-03 中国电力科学研究院 Failure operation method and device for flow battery system
CN111562503B (en) * 2020-04-07 2022-05-03 天津力神电池股份有限公司 Method for analyzing and processing failure of lithium ion battery charging and discharging equipment
CN114166988B (en) * 2022-02-09 2022-04-19 华谱科仪(北京)科技有限公司 Chromatograph cluster fault detection method and device

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