CN104297576A - Characteristic testing method and device applied to different aging stages of super capacitors - Google Patents
Characteristic testing method and device applied to different aging stages of super capacitors Download PDFInfo
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- CN104297576A CN104297576A CN201310295830.7A CN201310295830A CN104297576A CN 104297576 A CN104297576 A CN 104297576A CN 201310295830 A CN201310295830 A CN 201310295830A CN 104297576 A CN104297576 A CN 104297576A
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Abstract
The invention relates to a characteristic testing method and device applied to different aging stages of super capacitors. The method includes the steps such as pre-testing, characteristic testing, temperature adjustment, temperature standing and aging testing. The device comprises power grid input, a power conversion device, a transitional super capacitor, a DC/DC converter, a temperature control box, a tested super capacitor and a host computer. Compared with the prior art, the characteristic testing method and device of the invention have advantages of a wide covering range, small characteristic influence, highly targeted performance, short consumed time and the like.
Description
Technical field
The present invention relates to a kind of characteristic test method and device of ultracapacitor, especially relate to characteristic test method and the device of a kind of ultracapacitor different ageing step.
Background technology
The generation of electricity by new energy technical development being representative with the clean energy resource such as sun power, wind energy is rapid, and to realize the key that this kind of unstable energy effectively uses be extensive energy storage technologies.
The energy density of ultracapacitor higher than traditional capacitance, power density again much larger than accumulator, add it have high-level efficiency discharge and recharge, wide region working temperature, the long-life circulation outstanding feature be highly suitable for extensive stored energy occasion.
Due to the singularity in extensive energy storage field, as high in electric pressure, power and energy requirement large, ultracapacitor application wherein is still in the starting stage.At present, occurred some pilot projects among a small circle both at home and abroad, Japanese Nippon Chemi-Con, U.S. Maxwell use the MW class level accumulator system of ultracapacitor foundation for absorbing grid transient energy respectively; Germany's Siemens exploitation is tried out at Madrid subway for the super capacitor energy-storage system reclaiming brake energy of rail transit vehicles; Middle National Olympic prestige science and technology uses the pure capacity public transport car that hybrid super capacitor is power to use in Shanghai World's Fair and 11 tunnels.This type of pilot project, all in the advantage playing super capacitor energy-storage in varying degrees, achieves the objects such as line voltage peak load shifting and economize energy.
In extensive energy storage occasion, the many factors such as the complicated dynamic operation condition in a large amount of monomer connection in series-parallel, high frequency of utilization, practical application, module temperature skewness, inevitably cause the inconsistent of ultracapacitor monomer performance, its life-span is also very large with the test result deviation under the ideal operation environment of laboratory.
Examine in the literature borders of open report both at home and abroad, though ultracapacitor is current study hotspot, but mainly concentrate in the production technology of ultracapacitor own, preparation method and material type selecting, the characteristic test method relating to the different ageing step of ultracapacitor in large-scale energy storage system rarely has bibliographical information.
Summary of the invention
Object of the present invention is exactly the characteristic test method and the device that provide a kind of ultracapacitor different ageing step in order to overcome defect that above-mentioned prior art exists.
Object of the present invention can be achieved through the following technical solutions:
The characteristic test method of ultracapacitor different ageing step, comprises the following steps:
1) pretest, comprises dimensional measurement, weight measurement and standard charge-discharge test;
2) characteristic test, this test result is the initial value of aging life-span test incipient stage, as the foundation of follow-up aging character parameter comparison;
Wherein, characteristic test is divided into integrity property to test and temporal characteristics test, and integrity property test comprises invariable power test successively, pulse power is tested, with reference to volume test, constant current test and cold start-up test; Temporal characteristics test only includes with reference to volume test and constant current test; Cold start-up test only completes lower than during specified temp in temperature;
3), after each characteristic test, judge whether the ultracapacitor aging life-span test termination criterion preset triggers, if when being judged as YES, then aging life-span test terminates; When being judged as NO, then proceed to step 4);
4) judging that supercapacitor temperature is the need of adjustment, when being judged as YES, then illustrating that the characteristic test at this temperature completes, then tested ultracapacitor is adjusted to after next probe temperature also leaves standstill and re-starts judgement in temperature control box; When being judged as NO, then proceed to step 5);
5) judge whether supercapacitor temperature reaches thermally-stabilised; When being judged as YES, then proceed to step 6); When being judged as NO, after continuing to leave standstill a period of time, re-start judgement;
6) judge whether the characteristic test in this stage terminates, and when being judged as YES, then proceeds to step 7); When being judged as NO, then illustrating that the characteristic test at least one temperature does not complete, need to get back to step 2), start the characteristic test at this temperature;
7) specific current power waveform is used to carry out burn-in test for different application objects;
8) judge whether the short-term test time triggers, when being judged as YES, illustrating that the short-duration test cycle arrives, then jumping to step 2) reference volume test start to carry out temporal characteristics test, when being judged as NO, then proceed to step 9);
9) judge whether the complete test duration triggers, when being judged as YES, then illustrate full test cycle arrive, then jump to step 2) invariable power test start to carry out integrity property test, when being judged as NO, then return step 7).
Step 1) Plays discharge and recharge test needs to follow the discharge and recharge step that electric capacity production firm provides, if manufacturer fails to provide discharge and recharge step, then reference standard uses 5C multiplying power to carry out full discharge and recharge, and centre does not comprise constant voltage or time of repose.
Standard discharge and recharge completes many groups continuously, when the Parameters variation of continuous two standard sets discharge and recharge data gained be no more than ± 2% time, then judge discharge and recharge data stabilization, use the reference data that second group of data are wherein tested as this aging life-span.
Step 5) in supercapacitor temperature change be no more than ± 2 DEG C be supercapacitor temperature and reach thermally-stabilised.
The characteristic test device of a kind of ultracapacitor different ageing step, comprise electrical network input, power-converting device, transition ultracapacitor, DC/DC transducer, temperature control box, tested ultracapacitor and host computer, described electrical network input is connected with transition ultracapacitor by power-converting device, described transition ultracapacitor is connected with tested ultracapacitor by DC/DC transducer, described tested ultracapacitor inserts temperature control box, test realize temperature regulating and controlling in temperature control box after, described host computer is by data line connection and DC/DC transducer, temperature control box, tested ultracapacitor connects.
Compared with prior art, the present invention has the following advantages:
1. present system intactly gives the method for testing of ultracapacitor aging life-span, and the data obtained is wide towards property, and test result ubiquity is large, for the reliability of large-scale energy storage system application, security provide support;
2. in method of testing of the present invention, select manufacturer recommends discharge and recharge to carry out charge and discharge maintenance, avoid irrational common full charge and discharge circulation may cause performance degradation and the life time decay of tested ultracapacitor in characteristic test, reduce characteristic test to the impact of ultracapacitor aging life-span;
3. the present invention selects transition ultracapacitor to provide electric energy charge and discharge for tested ultracapacitor, improve the quality of power supply, and the pulse easily realizing cleaning provides and absorption, in reduction experimentation, full test macro is to the pollution of electrical network, simultaneously most important the impact of ultracapacitor aging life-span is confined to aging action and test loop, effectively avoids the uncertainty in a series of ultracapacitor ageing processes brought because of the electrical network quality of power supply;
4. burn-in test of the present invention is for a certain serial application, as towards electric automobile, city rail traffic etc., by comprehensive this serial application versatility electric current, power grade curve, the ageing state of life test acquired results accurate description ultracapacitor under this application level can be made;
5. ageing tester of the present invention carries out identification calculating by host computer to ultracapacitor performance parameter, be different from simple electric current and voltage to read, the algorithm identification supported by host computer can better describe ultracapacitor charge-discharge characteristic and model parameter, acquired results also contributes to production firm's adjustment and produces material, amendment production technology etc.;
6. the distinguishing characteristic test duration of the present invention, be divided into temporal characteristics to test and test two kinds with integrity property, in testing, Parameters variation is very fast, affect larger parameter by different aging factors and carry out sample record within comparatively short-term, the parameter very inresponsive to aging action for part then just gives survey record in the test of periodicity integrity property, effective quickening test duration, do not affect measuring accuracy simultaneously, be conducive to accelerated reliability and security verification.
Accompanying drawing explanation
Fig. 1 is testing procedure process flow diagram of the present invention;
Fig. 2 is proving installation structural representation of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 1, the characteristic test method of a kind of ultracapacitor different ageing step, comprises the following steps:
Step 101, aging life-span test start time, first pretest is carried out, comprise size, weight measurement and standard discharge and recharge, its Plays discharge and recharge needs to follow the discharge and recharge step that electric capacity production firm provides, if manufacturer fails to provide, then reference standard uses 5C multiplying power to carry out full discharge and recharge, and centre does not comprise constant voltage or time of repose;
Standard discharge and recharge needs to complete many groups continuously, when continuous two standard sets discharge and recharge data parameters obtained stable (Parameters variation is no more than ± 2% be defined as stable), then use the reference data that second group of data is tested as this aging life-span, even if these data are different from rating data;
Step 102, complete pretest after, carry out first integrity property test record, acquired results is the initial value of aging life-span incipient stage, and aging character parameter comparison is afterwards all compared with this result;
Integrity property test comprises invariable power test, pulse power test, tests with reference to volume test, constant current test and cold start-up; Temporal characteristics test only includes to be tested with reference to volume test and constant current;
Need in characteristic test under specific low temperature additionally to carry out cold start-up test, guarantee ageing properties and the characterisitic parameter of ultracapacitor under low temperature;
Judge after step 103, each characteristic test whether the ultracapacitor aging life-span test termination criterion in advance determined triggers, and whether the characterisitic parameter namely obtained in characteristic test reaches test end condition;
When being judged as YES, then aging life-span test terminates;
When being judged as NO, then proceed to step 104;
Step 104, judge whether supercapacitor temperature adjusts, because the ultracapacitor in extensive stored energy application needs to work under wide working temperature, therefore need to assess super capacitor characteristics at different temperatures;
When being judged as YES, illustrate that the characteristic test at some temperature completes, then tested ultracapacitor is adjusted to next probe temperature and leaves standstill in temperature control box, and burn-in test needs the temperature of test to need to determine before complete test in advance;
When being judged as NO, then proceed to step 105;
Step 105, judge whether supercapacitor temperature reaches thermally-stabilised, be thermally-stabilisedly defined as supercapacitor temperature change and be no more than ± 2 DEG C;
When being judged as YES, temperature has reached thermally-stabilised, can continue aging test, then proceed to step 106;
When being judged as NO, supercapacitor temperature being described still in change, needing to continue to leave standstill a period of time;
Step 106, judge whether all characteristic tests in this stage terminate;
When being judged as YES, then proceed to step 107;
When being judged as NO, then illustrate that the characteristic test of at least one temperature does not complete, need to get back to step 102 start this temperature under characteristic test;
Step 107, specific general current power waveform is used to carry out burn-in test for different application objects;
Step 108, judge whether the short-term test time triggers, if yes, then illustrate that the short-duration test cycle arrives, then reference the volume test jumping to step 102 starts temporal characteristics and tests, and if NO, then proceeds to step 109;
Step 109, judge whether complete test period triggers, if yes, then illustrate that full test cycle arrives, then jump to step 102 and complete integrity property test, if NO, then return step 107;
As shown in Figure 2, the characteristic test device of a kind of ultracapacitor different ageing step, it is characterized in that, comprise electrical network input 10, power-converting device 20, transition ultracapacitor 30, DC/DC transducer 40, tested ultracapacitor 50, temperature control box 60 and host computer 70, described electrical network input 10 is connected with transition ultracapacitor 30 by power-converting device 20, described transition ultracapacitor 30 is connected with tested ultracapacitor 50 by DC/DC transducer 40, described tested ultracapacitor 50 inserts temperature control box 60, test realize temperature regulating and controlling in temperature control box 60 after, described host computer 70 is by data line connection and DC/DC transducer 40, tested ultracapacitor 50, temperature control box 60 connects.
In large-scale energy storage system application, owing to comprising the coefficient impacts of various aging action such as voltage, electric current, temperature, ultracapacitor performance often uses through the several months and had already declined, larger with manufacturer handbook data difference.In addition, along with its working environment is day by day severe, and ultracapacitor generally exceeds specified section operation on the border of defined limit value, even, makes its actual mission life much smaller than monomer nominal value.So, ultracapacitor aging life-span method of testing and device combine the user demand of existing extensive energy storage high reliability and high frequency time, give a kind of complete method of testing covering test event nearly all in the document such as existing standard, research, this testing needle is to a certain serial application, by versatility electric current, the power grade curve of integrated application, the ageing state of aging life-span test result accurate description ultracapacitor under this grade can be made, acquired results also contributes to production firm's adjustment and produces material, amendment production technology etc.
Claims (5)
1. the characteristic test method of ultracapacitor different ageing step, is characterized in that, comprise the following steps:
1) pretest, comprises dimensional measurement, weight measurement and standard charge-discharge test;
2) characteristic test, this test result is the initial value of aging life-span test incipient stage, as the foundation of follow-up aging character parameter comparison;
Wherein, characteristic test is divided into integrity property to test and temporal characteristics test, and integrity property test comprises invariable power test successively, pulse power is tested, with reference to volume test, constant current test and cold start-up test; Temporal characteristics test only includes with reference to volume test and constant current test; Cold start-up test only completes lower than during specified temp in temperature;
3), after each characteristic test, judge whether the ultracapacitor aging life-span test termination criterion preset triggers, if when being judged as YES, then aging life-span test terminates; When being judged as NO, then proceed to step 4);
4) judging that supercapacitor temperature is the need of adjustment, when being judged as YES, then illustrating that the characteristic test at this temperature completes, then tested ultracapacitor is adjusted to after next probe temperature also leaves standstill and re-starts judgement in temperature control box; When being judged as NO, then proceed to step 5);
5) judge whether supercapacitor temperature reaches thermally-stabilised; When being judged as YES, then proceed to step 6); When being judged as NO, after continuing to leave standstill a period of time, re-start judgement;
6) judge whether the characteristic test in this stage terminates, and when being judged as YES, then proceeds to step 7); When being judged as NO, then illustrating that the characteristic test at least one temperature does not complete, need to get back to step 2), start the characteristic test at this temperature;
7) specific current power waveform is used to carry out burn-in test for different application objects;
8) judge whether the short-term test time triggers, when being judged as YES, illustrating that the short-duration test cycle arrives, then jumping to step 2) reference volume test start to carry out temporal characteristics test, when being judged as NO, then proceed to step 9);
9) judge whether the complete test duration triggers, when being judged as YES, then illustrate full test cycle arrive, then jump to step 2) invariable power test start to carry out integrity property test, when being judged as NO, then return step 7).
2. the characteristic test method of a kind of ultracapacitor according to claim 1 different ageing step, it is characterized in that, step 1) Plays discharge and recharge test needs to follow the discharge and recharge step that electric capacity production firm provides, if manufacturer fails to provide discharge and recharge step, then reference standard uses 5C multiplying power to carry out full discharge and recharge, and centre does not comprise constant voltage or time of repose.
3. the characteristic test method of a kind of ultracapacitor according to claim 2 different ageing step, it is characterized in that, standard discharge and recharge completes many groups continuously, when the Parameters variation of continuous two standard sets discharge and recharge data gained be no more than ± 2% time, then judge discharge and recharge data stabilization, use the reference data that second group of data are wherein tested as this aging life-span.
4. the characteristic test method of a kind of ultracapacitor according to claim 2 different ageing step, is characterized in that, step 5) in supercapacitor temperature change be no more than ± 2 DEG C be supercapacitor temperature and reach thermally-stabilised.
5. the characteristic test device of a ultracapacitor different ageing step, it is characterized in that, comprise electrical network input, power-converting device, transition ultracapacitor, DC/DC transducer, temperature control box, tested ultracapacitor and host computer, described electrical network input is connected with transition ultracapacitor by power-converting device, described transition ultracapacitor is connected with tested ultracapacitor by DC/DC transducer, described tested ultracapacitor inserts temperature control box, test realize temperature regulating and controlling in temperature control box after, described host computer is by data line connection and DC/DC transducer, temperature control box, tested ultracapacitor connects.
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| CN107961992A (en) * | 2017-11-24 | 2018-04-27 | 西安力能新能源科技有限公司 | A kind of test method of ultracapacitor |
| CN108333446A (en) * | 2017-12-29 | 2018-07-27 | 江阴弘远新能源科技有限公司 | Super capacitor detection method based on variable propeller pitch control |
| CN108663580A (en) * | 2017-07-10 | 2018-10-16 | 山东光因照明科技有限公司 | Electrochemical capacitor life tester |
| CN109444598A (en) * | 2018-11-30 | 2019-03-08 | 广东电网有限责任公司 | A kind of performance test methods of supercapacitor |
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| CN109444598A (en) * | 2018-11-30 | 2019-03-08 | 广东电网有限责任公司 | A kind of performance test methods of supercapacitor |
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Effective date of registration: 20220729 Address after: 200131 building C, No. 888, Huanhu West 2nd Road, Lingang New District, Pudong New Area, Shanghai Patentee after: Zhiche (Shanghai) Industrial Co.,Ltd. Address before: 200092 Siping Road 1239, Shanghai, Yangpu District Patentee before: TONGJI University |