CN104020353A - Supercapacitor internal resistance measurement method - Google Patents
Supercapacitor internal resistance measurement method Download PDFInfo
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- CN104020353A CN104020353A CN201410088186.0A CN201410088186A CN104020353A CN 104020353 A CN104020353 A CN 104020353A CN 201410088186 A CN201410088186 A CN 201410088186A CN 104020353 A CN104020353 A CN 104020353A
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Abstract
The invention relates to the field of capacitor testing, and is to provide a supercapacitor internal resistance measurement method. A supercapacitor internal resistance measurement method comprises carrying out charging, constant voltage maintaining and discharging on a supercapacitor by utilizing a constant current I twice; carrying out measuring for a plurality of times on the voltage of the supercapacitor every 8-10 ms starting from the second discharging, and recording measured voltage values B each time; labeling the recorded voltage values B measured each time to a voltage relational graph and connecting the voltage values through a simulation straight line D; drawing a vertical line F of a instantaneous discharging initial point E of the supercapacitor changing from the constant voltage maintaining state to the discharging state, and drawing an extension line G of a simulation straight line B, the extension line G meeting the vertical line F at an H point; setting the voltage drop of the voltage value corresponding to the discharging initial point E and the voltage value of the cross point H to be [delta] U1; and obtaining the internal resistance R of the supercapacitor through the computational formula R=[delta] U/ I. According to the supercapacitor internal resistance measurement method, the accuracy of the measured internal resistance of the supercapacitor is high.
Description
Technical field
The present invention relates to capacitor testing field, especially a kind of ultracapacitor internal resistance assay method.
Background technology
Capacity and internal resistance are the main performance index that affects ultracapacitor quality; Ultracapacitor is called hyperchannel double layer capacitor, also claims farad level capacitor, and in order to store the electric energy of higher-energy, general energy-storage capacitor is selected double layer capacitor, and its electric capacity is farad level; Because such capacitor and traditional capacitor (microfarad rank) have larger difference, cannot measure fast and accurately with ordinary numbers electric bridge.The disclosure of the invention of Chinese Patent Application No. 201310349381.X a kind of electric capacitance measurement test system and method for testing thereof of ultracapacitor, it comprises program-controlled precision DC stabilizer V1, program-controlled DC Electronic Loads I1 and multiple unit capacitor test circuit, described capacitor test circuit is by capacitor to be detected, charging paths, discharge paths, AD gathers branch road and relay forms, wherein, charging paths is also connected on program-controlled precision DC stabilizer V1, discharge paths series connection is on program-controlled DC Electronic Loads I1, charging paths and discharge paths are passed through relay switch, its method of testing comprises following steps: (1) is transfer relay simultaneously, and capacitor is in parallel with program-controlled precision DC stabilizer V1, adopts the method for charged in parallel to carry out synchronous charging to many capacitors, (2) when condenser voltage reaches after setting, constant official hour, (3) after constant voltage time arrives, first disconnect the gauge tap J3 of program-controlled precision DC stabilizer V1, then while transfer relay, makes capacitor connect into series system, adopts the method for discharged in series to carry out synchronous discharge to many capacitors, (4) start program-controlled DC Electronic Loads I1, to preset continuous current I, start electric discharge, the AD capture card synchronous scanning that in the time of electric discharge, employing gathers branch road by AD realizes the synchronous acquisition to many capacitor discharge voltages, reduces the time delay that round scanning mode produces, (5) start monitoring voltage and time to calculate,, when voltage drop arrives V1 value, record this moment t1, when voltage drop is to V2, record this moment t2, (6) by the electric capacity computing formula C=I stipulating in IEC62391-1 * (t2-t1)/(U1-U2), calculate electric capacity, (7) complete after electric capacity test, can as required, regulate constant current electronic load discharge current, to reach the object of rapid discharge.Standard < < QC-T741-2006 > > has relevant regulation to the mensuration of automobile-used capacity of super capacitor and internal resistance; Ultracapacitor internal resistance is calculated by internal resistance computing formula R=Δ U/I, Δ U1 in formula is that ultracapacitor becomes the discharge condition voltage drop of moment from constant voltage hold mode, Δ U=(U1-U2), when ultracapacitor internal resistance is measured, the time interval of U2 and U1 is shorter, and the internal resistance value R calculating is just more accurate; At present due to the fast not reason of the reaction velocity of test macro, the time interval that the U2 value of exist measuring and ultracapacitor become discharge condition moment from constant voltage hold mode is about 10ms, the poor deficiency of internal resistance accuracy that causes the ultracapacitor that calculates, therefore, design a kind of higher ultracapacitor internal resistance assay method of internal resistance accuracy of measuring ultracapacitor, become problem demanding prompt solution.
Summary of the invention
The object of the invention is in order to overcome time interval that U2 value that current existence measures and ultracapacitor become discharge condition moment from constant voltage hold mode about 10ms, the poor deficiency of internal resistance accuracy that causes the ultracapacitor that calculates, provides a kind of higher ultracapacitor internal resistance assay method of internal resistance accuracy of measuring ultracapacitor.
Concrete technical scheme of the present invention is:
A ultracapacitor internal resistance assay method, comprises step 1, and with continuous current, I charges for the first time to ultracapacitor; Step 2, when ultracapacitor voltage reaches after assigned voltage U1, the T1 of constant voltage time for the first time of constant voltage pressurize regulation; Step 3, ultracapacitor discharges into 0.3 times to 0.5 times of U1 for the first time with continuous current I; Step 4, with continuous current, I charges for the second time to ultracapacitor; Step 5, when ultracapacitor voltage reaches after assigned voltage U1, the T2 of constant voltage time for the second time of constant voltage pressurize regulation; Step 6, ultracapacitor discharges for the second time with continuous current I until 0.03 times to 0.15 times of U1 starts, at interval of 8ms to 10ms, the voltage of ultracapacitor is carried out to several times mensuration from electric discharge for the second time, and records the magnitude of voltage B of each mensuration; Step 7, work be take the time voltage graph of a relation that voltage is horizontal ordinate as ordinate, time, the magnitude of voltage B that respectively measures of record is labeled in respectively in voltage relationship figure and with simulating straight line D connection, make ultracapacitor and from constant voltage hold mode, become the vertical line F of the electric discharge starting point E of discharge condition moment, the extension G and the vertical line F that make simulation straight line B intersect at a H, magnitude of voltage corresponding to some H is decided to be to U2, and by discharging, magnitude of voltage corresponding to starting point E and the voltage drop of joining H are decided to be Δ U1; Step 8, calculates the internal resistance R of ultracapacitor by computing formula R=Δ U/I.This ultracapacitor internal resistance assay method, can overcome the fast not deficiency of reaction velocity of test macro, shortened U2 and measured the time interval with U1, and the time interval, (t2-t1) trended towards 0; During mensuration, there is twice charging, constant voltage pressurize and electric discharge, by charging, constant voltage pressurize and electric discharge for the first time, can prevent ultracapacitor because of previously to be less than the current charges mistake of continuous current I, while causing ultracapacitor to be measured, capacity is unstable and that internal resistance is measured is inaccurate; This ultracapacitor internal resistance assay method, the internal resistance accuracy of the ultracapacitor of mensuration is higher.
As preferably, described continuous current I is 100A to 200A; Constant voltage time T1 is 10 s to 30 s for the first time; Constant voltage time T2 is 1 min to 5min for the second time; Assigned voltage U1 is 0.9 times to 1 times of ultracapacitor rated voltage.Through test, the internal resistance accuracy of measuring ultracapacitor is higher and stable.
Compared with prior art, the invention has the beneficial effects as follows: this ultracapacitor internal resistance assay method, can overcome the fast not deficiency of reaction velocity of test macro, shorten U2 and measured the time interval with U1, the time interval, (t2-t1) trended towards 0; During mensuration, there is twice charging, constant voltage pressurize and electric discharge, by charging, constant voltage pressurize and electric discharge for the first time, can prevent ultracapacitor because of previously to be less than the current charges mistake of continuous current I, while causing ultracapacitor to be measured, capacity is unstable and that internal resistance is measured is inaccurate; This ultracapacitor internal resistance assay method, the internal resistance accuracy of the ultracapacitor of mensuration is higher.Continuous current I is 100A to 200A; Constant voltage time T1 is 10 s to 30 s for the first time; Constant voltage time T2 is 1 min to 5min for the second time; Assigned voltage U1 is 0.9 times to 1 times of ultracapacitor rated voltage, and through test, the internal resistance accuracy of measuring ultracapacitor is higher and stable.
Accompanying drawing explanation
Fig. 1 is time voltage graph of a relation of the present invention;
Fig. 2 is the enlarged drawing at A place in Fig. 1.
Embodiment
Below in conjunction with shown in accompanying drawing, the present invention is described further.
As shown in accompanying drawing 1, accompanying drawing 2: a kind of ultracapacitor internal resistance assay method, is characterized in that: comprise step 1, with continuous current, I charges for the first time to ultracapacitor; Step 2, when ultracapacitor voltage reaches after assigned voltage U1, the T1 of constant voltage time for the first time of constant voltage pressurize regulation; Step 3, ultracapacitor discharges into 0.4 times of U1 for the first time with continuous current I; Step 4, with continuous current, I charges for the second time to ultracapacitor; Step 5, when ultracapacitor voltage reaches after assigned voltage U1, the T2 of constant voltage time for the second time of constant voltage pressurize regulation; Step 6, ultracapacitor discharges for the second time with continuous current I until 0.1 times of U1 starts, at interval of 10ms, the voltage of ultracapacitor is carried out to 100 times from electric discharge for the second time and measures, and records the magnitude of voltage B of each mensuration; Step 7, work be take the time voltage graph of a relation that voltage is horizontal ordinate as ordinate, time, the magnitude of voltage B that respectively measures of record is labeled in respectively in voltage relationship figure and with simulating straight line D connection, make ultracapacitor and from constant voltage hold mode, become the vertical line F of the electric discharge starting point E of the moment of discharging, the extension G and the vertical line F that make simulation straight line B intersect at a H, magnitude of voltage corresponding to some H is decided to be to U2, the voltage drop of electric discharge starting point E and joining H is decided to be to Δ U; Step 8, calculates the internal resistance R of ultracapacitor by computing formula R=Δ U/I.
Described continuous current I is 100A; Constant voltage time T1 is 20 s for the first time; Constant voltage time T2 is 3min for the second time; Assigned voltage U1 is 1 times of ultracapacitor rated voltage; In the present embodiment, assigned voltage U1 is 2.7V.
The invention has the beneficial effects as follows: this ultracapacitor internal resistance assay method, can overcome the fast not deficiency of reaction velocity of test macro, shorten U2 and measured the time interval with U1, the time interval, (t2-t1) trended towards 0; During mensuration, there is twice charging, constant voltage pressurize and electric discharge, by charging, constant voltage pressurize and electric discharge for the first time, can prevent ultracapacitor because of previously to be less than the current charges mistake of continuous current I, while causing ultracapacitor to be measured, capacity is unstable and that internal resistance is measured is inaccurate; This ultracapacitor internal resistance assay method, the internal resistance accuracy of the ultracapacitor of mensuration is higher.Continuous current I is 100A; Constant voltage time T1 is 20 s for the first time; Constant voltage time T2 is 3min for the second time; Assigned voltage U1 is 1 times of ultracapacitor rated voltage.Through test, the internal resistance accuracy of measuring ultracapacitor is higher and stable.
It is apparent to one skilled in the art that the present invention can change into various ways, and such change is not thought and departed from the scope of the present invention.All so apparent modifications of the technician to described field, within being included in the scope of this claim.
Claims (2)
1. a ultracapacitor internal resistance assay method, is characterized in that: comprise step 1, with continuous current, I charges for the first time to ultracapacitor; Step 2, when ultracapacitor voltage reaches after assigned voltage U1, the T1 of constant voltage time for the first time of constant voltage pressurize regulation; Step 3, ultracapacitor discharges into 0.3 times to 0.5 times of U1 for the first time with continuous current I; Step 4, with continuous current, I charges for the second time to ultracapacitor; Step 5, when ultracapacitor voltage reaches after assigned voltage U1, the T2 of constant voltage time for the second time of constant voltage pressurize regulation; Step 6, ultracapacitor discharges for the second time with continuous current I until 0.03 times to 0.15 times of U1 starts, at interval of 8ms to 10ms, the voltage of ultracapacitor is carried out to several times mensuration from electric discharge for the second time, and records the magnitude of voltage B of each mensuration; Step 7, work be take the time voltage graph of a relation that voltage is horizontal ordinate as ordinate, time, the magnitude of voltage B that respectively measures of record is labeled in respectively in voltage relationship figure and with simulating straight line D connection, make ultracapacitor and from constant voltage hold mode, become the vertical line F of the electric discharge starting point E of discharge condition moment, the extension G and the vertical line F that make simulation straight line B intersect at a H, magnitude of voltage corresponding to some H is decided to be to U2, and by discharging, magnitude of voltage corresponding to starting point E and the voltage drop of joining H are decided to be Δ U1; Step 8, calculates the internal resistance R of ultracapacitor by computing formula R=Δ U/I.
2. ultracapacitor internal resistance assay method according to claim 1, is characterized in that: described continuous current I is 100A to 200A; Constant voltage time T1 is 10 s to 30 s for the first time; Constant voltage time T2 is 1 min to 5min for the second time; Assigned voltage U1 is 0.9 times to 1 times of ultracapacitor rated voltage.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459337A (en) * | 2014-12-08 | 2015-03-25 | 工业和信息化部电子第五研究所 | Capacitance detection method and system |
| CN106802371A (en) * | 2015-11-25 | 2017-06-06 | 中船重工(重庆)海装风电设备有限公司 | A kind of health status monitoring method of super capacitor, system and Wind turbines |
| CN107860979A (en) * | 2017-09-11 | 2018-03-30 | 宁波中车新能源科技有限公司 | A kind of test super capacitor energy storage system capacity, the method and system of internal resistance |
| CN108918968A (en) * | 2018-03-30 | 2018-11-30 | 金卡智能集团股份有限公司 | Super capacitor DC internal resistance test method, switching time algorithm and readable medium |
| 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 |
| CN109709399A (en) * | 2018-12-07 | 2019-05-03 | 玉溪师范学院 | Supercapacitor internal resistance detection device, method and computer readable storage medium |
| CN112513652A (en) * | 2018-08-22 | 2021-03-16 | 株式会社自动网络技术研究所 | Internal resistance detection device and power supply device |
| CN114264886A (en) * | 2021-12-22 | 2022-04-01 | 上海稊米汽车科技有限公司 | Rapid measurement method for super-capacitor parameters |
| CN114325199A (en) * | 2022-01-04 | 2022-04-12 | 中国船舶重工集团公司第七一一研究所 | Supercapacitor internal resistance detection method and device and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4795966A (en) * | 1986-05-02 | 1989-01-03 | Sencore, Inc. | Method and apparatus for measuring the equivalent series resistances of a capacitor |
| JP2001255345A (en) * | 2000-03-08 | 2001-09-21 | Nissin Electric Co Ltd | Method and device for measuring capacitance of capacitor and equivalent series resistance |
| CN201974483U (en) * | 2010-12-30 | 2011-09-14 | 上海仪器仪表研究所 | Small-capacity super capacitor measuring device |
| US20130116956A1 (en) * | 2011-11-08 | 2013-05-09 | Hon Hai Precision Industry Co., Ltd. | Capacitance measurement circuit |
| CN103487663A (en) * | 2013-08-12 | 2014-01-01 | 中国振华（集团）新云电子元器件有限责任公司 | System and method for testing capacitance of supercapacitor |
| CN103513106A (en) * | 2012-06-26 | 2014-01-15 | 中兴通讯股份有限公司 | Measuring method, measuring circuit and monitoring apparatus |
-
2014
- 2014-03-12 CN CN201410088186.0A patent/CN104020353A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4795966A (en) * | 1986-05-02 | 1989-01-03 | Sencore, Inc. | Method and apparatus for measuring the equivalent series resistances of a capacitor |
| JP2001255345A (en) * | 2000-03-08 | 2001-09-21 | Nissin Electric Co Ltd | Method and device for measuring capacitance of capacitor and equivalent series resistance |
| CN201974483U (en) * | 2010-12-30 | 2011-09-14 | 上海仪器仪表研究所 | Small-capacity super capacitor measuring device |
| US20130116956A1 (en) * | 2011-11-08 | 2013-05-09 | Hon Hai Precision Industry Co., Ltd. | Capacitance measurement circuit |
| CN103513106A (en) * | 2012-06-26 | 2014-01-15 | 中兴通讯股份有限公司 | Measuring method, measuring circuit and monitoring apparatus |
| CN103487663A (en) * | 2013-08-12 | 2014-01-01 | 中国振华（集团）新云电子元器件有限责任公司 | System and method for testing capacitance of supercapacitor |
Non-Patent Citations (2)
| Title |
|---|
| 佚名: "KAMCAP超级电容器的试验方法及设备", 《百度文库（WENKU.BAIDU.COM/VIEW/A7633FDFC1C708A1284A440B.HTML?FROM=SEARCH）》, 25 December 2012 (2012-12-25), pages 1 - 12 * |
| 姚雨迎 等: "A Study of ESR Testing Method for Supercapacitor", 《测控技术》, vol. 24, no. 2, 31 December 2005 (2005-12-31), pages 15 - 17 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459337B (en) * | 2014-12-08 | 2017-02-22 | 工业和信息化部电子第五研究所 | capacitance detection method and system |
| CN104459337A (en) * | 2014-12-08 | 2015-03-25 | 工业和信息化部电子第五研究所 | Capacitance detection method and system |
| CN106802371A (en) * | 2015-11-25 | 2017-06-06 | 中船重工(重庆)海装风电设备有限公司 | A kind of health status monitoring method of super capacitor, system and Wind turbines |
| CN107860979B (en) * | 2017-09-11 | 2020-07-03 | 宁波中车新能源科技有限公司 | Method and system for testing capacity and internal resistance of super capacitor energy storage system |
| CN107860979A (en) * | 2017-09-11 | 2018-03-30 | 宁波中车新能源科技有限公司 | A kind of test super capacitor energy storage system capacity, the method and system of internal resistance |
| CN108918968B (en) * | 2018-03-30 | 2021-04-06 | 金卡智能集团股份有限公司 | Super capacitor direct current internal resistance testing method, switching time algorithm and readable medium |
| CN108918968A (en) * | 2018-03-30 | 2018-11-30 | 金卡智能集团股份有限公司 | Super capacitor DC internal resistance test method, switching time algorithm and readable medium |
| CN112513652A (en) * | 2018-08-22 | 2021-03-16 | 株式会社自动网络技术研究所 | Internal resistance detection device and power supply device |
| 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 |
| CN109444598B (en) * | 2018-11-30 | 2021-07-02 | 广东电网有限责任公司 | Performance test method of super capacitor |
| CN109709399A (en) * | 2018-12-07 | 2019-05-03 | 玉溪师范学院 | Supercapacitor internal resistance detection device, method and computer readable storage medium |
| CN114264886A (en) * | 2021-12-22 | 2022-04-01 | 上海稊米汽车科技有限公司 | Rapid measurement method for super-capacitor parameters |
| CN114264886B (en) * | 2021-12-22 | 2023-11-10 | 上海稊米汽车科技有限公司 | Rapid measurement method for super capacitor parameters |
| CN114325199A (en) * | 2022-01-04 | 2022-04-12 | 中国船舶重工集团公司第七一一研究所 | Supercapacitor internal resistance detection method and device and storage medium |
| CN114325199B (en) * | 2022-01-04 | 2023-11-14 | 中国船舶集团有限公司第七一一研究所 | Method and device for detecting internal resistance of super capacitor and storage medium |
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Application publication date: 20140903 |