CN100364168C - Method for sorting batteries according to battery volt-ampere curve - Google Patents
Method for sorting batteries according to battery volt-ampere curve Download PDFInfo
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- CN100364168C CN100364168C CNB2005100662991A CN200510066299A CN100364168C CN 100364168 C CN100364168 C CN 100364168C CN B2005100662991 A CNB2005100662991 A CN B2005100662991A CN 200510066299 A CN200510066299 A CN 200510066299A CN 100364168 C CN100364168 C CN 100364168C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present invention discloses a method for separating batteries according to battery volt-ampere characteristic curves. The method utilizes a computer to control the charging and discharging processes of the batteries, collect relevant data on the volt-ampere characteristic curves and separate the batteries according to the combination of the data. The method has the notable advantages of high detecting speed, high separating quality, convenient use, etc.; the method is suitable for separating various types of batteries and is suitable for separating capacitors and energy storage elements.
Description
Technical field
The present invention relates to a kind of method of sorting battery,, belong to the battery detecting field more specifically to a kind of method of sorting batteries according to battery volt-ampere curve.
Background technology
Along with continuing to increase of the secondary cell scope of application; its industrialization; the process of scale is also in continuous expansion; and for one of significant process in the battery production technology-battery sorting; also constantly having more, effective method occurs; for example: Chinese patent Granted publication CN1044408C; July 28 1999 day for announcing; the name of innovation and creation is called: the method for separating secondary cell; and Chinese patent publication number CN1508901A; open day on June 30th, 2004; the name of innovation and creation is called: the method for separating secondary cell; a kind of method of separating secondary cell is all disclosed; but these methods all need to carry out a long-time complete charging/discharging of secondary cell cycle; then according to the secondary cell voltage in the charge and discharge process; current sample result and discharge time; calculate the capacity of secondary cell; carry out sorting according to the secondary cell characteristic curve subsequently; its weak point is: the cycle of discharging and recharging that secondary cell is complete has tens hours; the battery detecting overlong time, and need to consume a large amount of energy.
Summary of the invention
The present invention promptly is long at detection time in the above-mentioned prior art, the shortcoming that consumed energy is big and the method for a kind of sorting batteries according to battery volt-ampere curve of proposing, this method has made full use of I-V characteristic curve of cell and comprised these advantages of information such as the parameter that discharges and recharges under the internal resistance of cell, the different multiplying, self-discharge rate, maximum power point, and is simple.
For achieving the above object, the invention provides a kind of method of sorting batteries according to battery volt-ampere curve, mainly may further comprise the steps:
(1) battery is successively placed on the battery detecting equipment, inserts power supply outward, computer control battery high current charge-discharge;
(2) collection of cell voltage and electric current is finished in computer control, generates volt-ampere characteristic, and the result is kept in the computer;
(3) utilize R=U
OC/ I
SCCalculate the internal resistance resistance (R) of battery;
(4) utilize P=max{U * I} to calculate the maximum power point (P) of battery;
(5) battery open circuit voltage (U that settles the standard
OC), short circuit current (I
SC), the error range of internal resistance resistance (R) and maximum power point (P);
(6) with the open circuit voltage (U of test battery
OC), short circuit current (I
SC), internal resistance resistance (R) and maximum power point (P) compare with the error range of at least one condition of open circuit voltage, short circuit current, internal resistance resistance and the maximum power point of standard cell, the battery within scope is selected battery.
The present invention provides a kind of method of sorting batteries according to battery volt-ampere curve again, mainly may further comprise the steps:
This method mainly may further comprise the steps:
(1) battery is successively placed on the battery detecting equipment, inserts power supply outward, make battery carry out high current charge-discharge, computer is sampled to voltage and current in the discharge process of battery, forms volt-ampere characteristic, and is kept in the computer;
(2) selected battery volt-ampere calibration curve;
(3) on the volt-ampere calibration curve, select some contrast points respectively, provide the error range of contrast points;
(4) according to the error range at determined volt-ampere calibration curve contrast points place, carry out sorting by computer, the value and the contrast points at identical point place on the volt-ampere characteristic of test battery are compared, when comparing with contrast points its value all the battery within error range be selected battery.
The present invention is applicable to the sorting of various types of batteries, also is suitable for the sorting of electric capacity and energy-storage travelling wave tube.
The present invention has following remarkable advantage:
1. separation velocity is fast: need not to carry out complete battery charge and discharge process, only carry out the heavy-current discharge process of battery, make that test process is simple, efficient is high;
2. sorting quality height: cell classification utilizes open circuit voltage, short circuit current, internal resistance, maximum power point or the characteristic curve in test process of the battery battery of classifying that combines, and makes that classification is more accurate;
3. easy to use: as can to select the combination of relevant parameter in the use according to actual needs, make that sorting mechanism is more flexible.
Description of drawings
Fig. 1 is the following volt-ampere performance diagram of the perfect condition of battery;
Fig. 2 is the volt-ampere characteristics of figure of standard cell and one group of battery to be tested in the embodiment of the invention three;
Fig. 3 organizes the volt-ampere characteristics of figure of battery to be tested for standard cell in the embodiment of the invention four and another.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done further detailed introduction, but not as a limitation of the invention.
Referring to Fig. 1, be volt-ampere characteristic under the perfect condition of battery.
A kind of method of sorting batteries according to battery volt-ampere curve mainly may further comprise the steps:
(1) battery is successively placed on the battery detecting equipment (existing device), inserts power supply outward, computer control (prior art) battery high current charge-discharge;
(2) collection of cell voltage and electric current is finished in computer control, generates volt-ampere characteristic, and the result is kept in the computer, wherein: when electric current in the battery charging and discharging loop was zero, corresponding voltage was designated as the open circuit voltage U of battery
OC, when the battery both end voltage was zero, corresponding electric current was designated as the short circuit current I of battery
SC
(3) the open circuit voltage U by battery
OCWith short circuit current I
SC, utilize R=U
OC/ I
SCCalculate the internal resistance resistance R of battery; Utilize P=max{U * I} to calculate the maximum power point P of battery by the correspondence collection value of voltage-to-current;
(4) the battery open circuit voltage U that settles the standard
OC, short circuit current I
SC, internal resistance resistance R and maximum power point P error range;
(5) carrying out battery sorting according at least one condition contrast of open circuit voltage, short circuit current, internal resistance resistance and the maximum power point of standard cell sorts out; Also can utilize one section curve contrast standard curve in the I-V characteristic curve of cell in certain error range, to carry out sorting.
Embodiment one:
10 joints AA nickel-hydrogen secondary cell to be measured places battery detecting equipment, carry out discharge test by computer control, gather and write down voltage, the electric current of each battery, and calculate the internal resistance R and the maximum power point P of battery, if the battery label is respectively: 1,2,3,, 10, its data record is as shown in the table:
| Battery | U OC(mV) | I SC(A) | R(mΩ) | P(W) |
| 1 | 1235 | 81.25 | 15.2 | 25.10 |
| 2 | 1326 | 82.36 | 16.1 | 27.00 |
| 3 | 1255 | 82.03 | 15.3 | 25.85 |
| 4 | 1213 | 69.31 | 17.50 | 21.12 |
| 5 | 1256 | 55.58 | 22.60 | 18.45 |
| 6 | 1302 | 102.52 | 12.70 | 34.06 |
| 7 | 1163 | 57.29 | 20.30 | 18.21 |
| 8 | 1252 | 108.87 | 11.50 | 32.11 |
| 9 | 1304 | 88.11 | 14.80 | 27.21 |
| 10 | 1273 | 83.20 | 15.30 | 25.97 |
(1) if be the sorting standard with the value of R only, the standard of getting fixed this size battery is: R=15～20m Ω, and then above-mentioned test result, tested battery label is 1,2,3,4,10 can be classified as a class.
(2) if with R and U
OCValue be the normative reference of sorting, the standard of getting fixed this size battery is: R=15～20m Ω, U
OC=1.200～1.300V; According to above-mentioned test result, tested battery label is 1,3,4,10 can be classified as a class.
(3) be the normative reference of sorting as if the value with R and P, the standard of getting fixed this size battery is:
R=15～20m Ω, P=21～26W; According to above-mentioned test result, tested battery label is 1,3,4,10 can be classified as a class.
Above-mentioned steps is finished by computer, and the set basis actual needs of sorting standard is selected.
Embodiment two:
10 joints AAA nickel-hydrogen secondary cell to be measured places battery detecting equipment, carries out discharge test by computer control, gathers and write down the open circuit voltage U of each battery
OC, short circuit current I
SC, and calculate the internal resistance R of battery, and if the battery label is respectively: 1,2,3 ..., 10, its data record is as shown in the table:
| Battery | U OC(mV) | I SC(A) | R(mΩ) | P(W) |
| 11 | 1235 | 57.44 | 21.5 | 18.23 |
| 12 | 1326 | 54.57 | 24.3 | 17.58 |
| 13 | 1255 | 55.04 | 22.8 | 17.32 |
| 14 | 1213 | 45.43 | 26.7 | 13.60 |
| 15 | 1256 | 56.58 | 22.2 | 17.59 |
| 16 | 1302 | 45.05 | 28.9 | 14.99 |
| 17 | 1163 | 39.83 | 29.2 | 12.08 |
| 18 | 1252 | 49.49 | 25.3 | 15.49 |
| 19 | 1304 | 60.09 | 21.7 | 20.07 |
| 20 | 1273 | 47.86 | 26.6 | 15.87 |
(1) if be the sorting standard with the value of R only, the standard of getting fixed this size battery is: R=20～30m Ω, and then above-mentioned test result, tested battery label is 11,12,13,14,15,16,17,18,19,20 all can be classified as a class.
(2) if with R and I
SCValue be the normative reference of sorting, the standard of getting fixed this size battery is: R=20～30m Ω, I
SC=50～60A; According to above-mentioned test result, tested battery label is 11,12,13,15,18,20 to be selected battery.
(3) be the normative reference of sorting as if the value with R and P, the standard of getting fixed this size battery is: R=20～30m Ω, P=15～20W; According to above-mentioned test result, tested battery label is 11,12,13,15,18,20 to be selected battery.
Above-mentioned steps is finished by computer, and the set basis actual needs of sorting standard is selected.
Embodiment one and embodiment two also not only are confined to discharge test, and only are example with the discharge test, and be suitable too for the charge-discharge test process of battery.
Embodiment three:
With reference to figure 2, label be 21,22,23,24 secondary cell be positioned over carry out the large current density electrical testing in the checkout equipment after, computer data acquisition, and handle, forming volt-ampere characteristic, is standard curve I V if selection one has detected battery AA volt-ampere characteristic, selects five characteristic point: a, b, c, d, e when different size of current i, ii, iii, iv, v, error range is: ± 50mV, and its characteristic point voltage is as shown in the table:
Unit: (mV)
| a | b | c | d | e | |
| IV | 1174 | 1001 | 732 | 480 | 252 |
Unit (mV)
| a1 | b1 | | d1 | e1 | ||
| 21 | 1262 | 1085 | 656 | 429 | 328 | |
| 22 | 1174 | 972 | 700 | 486 | 259 | |
| 23 | 1186 | 1073 | 833 | 543 | 290 | |
| 24 | 1212 | 1047 | 719 | 492 | 272 |
By above-mentioned two tables as can be seen: the point on the volt-ampere characteristic of battery 22 and battery 24: the error of the some a on a1, b1, c1, d1, e1 and the selected volt-ampere calibration curve, b, c, d, e is in error range ± 50mV, thereby battery 22 and battery 24 are selected battery.
Characteristic point in the present embodiment can be chosen as the arbitrfary point on the volt-ampere characteristic.
Embodiment four:
Label be 31,32,33 secondary cell be positioned over detect establish test in putting forth energy after, computer data acquisition, and after handling, form volt-ampere characteristic as shown in Figure 3.If it is standard curve I V that selection one has detected the battery discharge curve, be chosen to be ± 10mV in the voltage sample value error range of discharging current between a～b, obtain the voltage II that reaches the standard grade thus, the voltage III that rolls off the production line, the curve and the standard curve I V of battery 31,32,33 are compared, the discharge curve of battery 32 rolls off the production line between the III at reach the standard grade II and voltage of voltage, then battery 31 is chosen as same class with selected standard cell, the selected standard cells of battery 31 and 33 discord are chosen as same class, with said process be that computer control is finished.
The volt-ampere curve that can select one of mesuring battary in the application of present embodiment is the sorting that calibration curve carries out battery.
Specific embodiment of the present invention has been done detailed explanation to the content of invention.For one of ordinary skill in the art, any conspicuous change that it is done all constitutes to infringement of patent right of the present invention, with corresponding legal responsibilities without departing from the premise in the spirit of the present invention.
Claims (3)
1. the method for a sorting batteries according to battery volt-ampere curve is characterized in that:
This method mainly may further comprise the steps:
(1) battery is successively placed on the battery detecting equipment, inserts power supply outward, computer control battery high current charge-discharge;
(2) collection of cell voltage and electric current is finished in computer control, generates volt-ampere characteristic, and the result is kept in the computer;
(3) utilize R=U
OC/ I
SCCalculate the internal resistance resistance (R) of battery;
(4) utilize P=max{U * I} to calculate the maximum power point (P) of battery;
(5) battery open circuit voltage (U that settles the standard
OC), short circuit current (I
SC), the error range of internal resistance resistance (R) and maximum power point (P);
(6) with the open circuit voltage (U of test battery
OC), short circuit current (I
SC), internal resistance resistance (R) and maximum power point (P) compare with the error range of at least one condition of open circuit voltage, short circuit current, internal resistance resistance and the maximum power point of standard cell, the battery within scope is selected battery.
2. the method for a sorting batteries according to battery volt-ampere curve is characterized in that:
This method mainly may further comprise the steps:
(1) battery is successively placed on the battery detecting equipment, inserts power supply outward, make battery carry out high current charge-discharge, computer is sampled to voltage and current in the charge and discharge process of battery, forms volt-ampere characteristic, and is kept in the computer;
(2) selected battery volt-ampere calibration curve;
(3) on the volt-ampere calibration curve, select some contrast points respectively, provide the error range of contrast points;
(4) according to the error range at determined volt-ampere calibration curve contrast points place, carry out sorting by computer, the value and the contrast points at identical point place on the volt-ampere characteristic of test battery are compared, when comparing with contrast points its value all the battery within error range be selected battery.
3. the method for a kind of sorting batteries according to battery volt-ampere curve as claimed in claim 2 is characterized in that:
Determine the volt-ampere calibration curve of battery, provide the top/bottom latitude line of curve error, the volt-ampere characteristic of test battery is compared with the volt-ampere calibration curve, determine that the pairing battery of volt-ampere characteristic in the last scope that rolls off the production line is selected battery.
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|---|---|---|---|
| CNB2005100662991A CN100364168C (en) | 2005-04-27 | 2005-04-27 | Method for sorting batteries according to battery volt-ampere curve |
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|---|---|---|---|
| CNB2005100662991A CN100364168C (en) | 2005-04-27 | 2005-04-27 | Method for sorting batteries according to battery volt-ampere curve |
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| CN100364168C true CN100364168C (en) | 2008-01-23 |
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| CN102269799B (en) * | 2011-04-29 | 2013-09-04 | 海能达通信股份有限公司 | Method and system for detecting capacity of secondary battery |
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| CN106154173A (en) * | 2016-06-24 | 2016-11-23 | 合肥国轩高科动力能源有限公司 | A kind of self discharge screening technique of the cheapest secondary cell easily |
| CN109542157B (en) * | 2018-11-14 | 2020-10-30 | 中国计量大学 | Direct calculation and tracking method for maximum power point of fuel cell |
| CN109877064B (en) * | 2019-01-16 | 2021-06-22 | 上海理工大学 | Method for rapidly screening self-discharge of parallel batteries |
| CN112014666B (en) * | 2020-08-07 | 2021-11-16 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method for evaluating consistency of lightning current volt-ampere characteristics of zinc oxide arrester valve plate |
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| CN113238152A (en) * | 2021-05-10 | 2021-08-10 | 昆山聚创新能源科技有限公司 | Lithium battery self-discharge detection method |
| CN113996562A (en) * | 2021-11-23 | 2022-02-01 | 格林美股份有限公司 | Battery sorting method and device based on volt-ampere characteristic curve and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151020A (en) * | 1995-11-22 | 1997-06-04 | 北京有色金属研究总院 | Method for separating secondary cell |
| CN1489237A (en) * | 2002-10-11 | 2004-04-14 | 北京有色金属研究总院 | Secondary cell sorting method |
| CN1508901A (en) * | 2002-12-18 | 2004-06-30 | 北京有色金属研究总院 | Method for scparating secodary cell |
-
2005
- 2005-04-27 CN CNB2005100662991A patent/CN100364168C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151020A (en) * | 1995-11-22 | 1997-06-04 | 北京有色金属研究总院 | Method for separating secondary cell |
| CN1489237A (en) * | 2002-10-11 | 2004-04-14 | 北京有色金属研究总院 | Secondary cell sorting method |
| CN1508901A (en) * | 2002-12-18 | 2004-06-30 | 北京有色金属研究总院 | Method for scparating secodary cell |
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Address after: 102206 Beijing City, Changping District Shahe Xinfeida Electronic Technology Development Center three Beijing Core Power Technology Co. Ltd. Patentee after: Han Wei Address before: 100088, 43 North Third Ring Road, Beijing, board No. 4, building 1209 Patentee before: Han Wei |
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Granted publication date: 20080123 Termination date: 20160427 |