CN1151020A - Method for separating secondary cell - Google Patents
Method for separating secondary cell Download PDFInfo
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- CN1151020A CN1151020A CN 95117490 CN95117490A CN1151020A CN 1151020 A CN1151020 A CN 1151020A CN 95117490 CN95117490 CN 95117490 CN 95117490 A CN95117490 A CN 95117490A CN 1151020 A CN1151020 A CN 1151020A
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Abstract
A method for sorting cylindrical secondary batteries uses computer to sort (secondary batter) based on its charge and discharge characteristics and includes such steps as acquisition of characteristic curves, determining capacity range, selecting reference curve, giving out deviation range and computer sorting. The sorted secondary batteries with similar characteristics can be directly used to assemble battery package. Its advantages include simple sorting process and high sorting speed and quality.
Description
The invention belongs to battery detecting sorting technology field, relate in particular to a kind of method of utilizing the family curve separating secondary cell of battery.
At present, being used for devices such as mobile communication, portable computer and electric tool provides the power supply of power mostly to be assembled battery greatly, and assembled battery generally is assembled into by more piece monomer secondary cell, therefore characterisitic parameters such as the capacity of each the monomer secondary cell in the requirement composition assembled battery, internal resistance, surface temperature, self-discharge rate all reach unanimity, and could guarantee that the quality of assembled battery is consistent with selected cell.Therefore need a large amount of secondary cells is carried out sorting.The method for separating of using all adopts by the range of capacity of appointment and carries out sorting now, and the battery of promptly selecting reaches unanimity on capacity; When the assembling assembled battery, again the parameters such as internal resistance, surface temperature characteristic and self-discharge rate of battery are done further to measure, the shortcoming that the electric battery that sub-elects the characterisitic parameter high conformity is dressed up the method for this sorting battery of assembled battery is: required screening installation complexity, not only need partial volume equipment, also need the measuring equipment that characterisitic parameters such as internal resistance to battery, surface temperature detect, and the measuring process complexity, distinguishing period is long, the cost height.
The method that the purpose of this invention is to provide a kind of separating secondary cell is simplified assorting room and screening installation, improves separation velocity and sorting quality, reduces cost.
The method of separating secondary cell of the present invention mainly comprises following step:
1. secondary cell is placed in the charge and discharge pick-up unit of battery and detects, obtain the charge and discharge family curve of every batteries, and in the input computing machine;
2. determine the range of capacity of selected secondary cell, the capacity of secondary cell is compared, select the battery in range of capacity;
3. the charge and discharge family curve to the secondary cell in the selected range of capacity compares, and selecting charge and discharge family curve satisfactory is datum curve;
4. on datum curve, select contrast points, provide the deviation range at contrast points place;
5. carry out sorting according to the deviation range at specified contrast points place by computing machine, the value at identical point place on the capacity of every joint secondary cell and the family curve is compared with contrast points, the all battery of its value in deviation range when comparing in the range of capacity of appointment and with contrast points are selected secondary cell.
For the consistance that makes selected secondary cell more better, can also select the characteristic deviation range of charge and discharge, it promptly is correlation curve with the datum curve, the upper and lower line that the trade-off curve deviation changes, then the charge and discharge family curve of every batteries is compared with correlation curve, all pairing batteries of charge and discharge family curve in upper and lower line scope are selected battery.
Filling of secondary cell, the discharge characteristic curve shape as shown in Figure 1, horizontal ordinate is time (T), ordinate is voltage (V), its curve can be divided into the charging stage (AB), fill, discharge is (BC) and discharge regime (CD) at interval, charging platform (EF) was arranged in the charging stage, discharge platform (GH) is arranged in discharge regime, when being full of, battery charge have the voltage drop difference to change (KB), when the sorting battery, can also select charging platform, discharge platform, the voltage drop difference changes equal segments as benchmark, emphasis is relatively selected a certain section family curve, and certain section similar battery sorting of family curve is come out.
With method of the present invention secondary cell is carried out sorting and has following advantage:
1. simplified the process of separating secondary cell, only the charge and discharge family curve of capacity by battery and battery just can be judged the performance of battery, does not need internal resistance, surface to secondary cell to heat up etc. and measures.
2. simplified and divided the equipment of selecting for use.Owing to do not need the characterisitic parameter of battery is measured, other measuring equipment has been saved in the therefore pick-up unit of the charge and discharge by secondary cell and the sorting that computing machine just can be finished battery.
3. separation velocity is fast, the quality height.Because secondary cell in the past need constantly be measured the characterisitic parameter of secondary cell when sorting, so speed is slower.Carry out sorting with method of the present invention, can carry out sorting to multiple batteries simultaneously by computing machine, separation velocity improves greatly, the high conformity of the secondary cell that sub-elects, when assembling assembled battery with the secondary cell that sub-elects, each monomer secondary cell is little to the properties influence of assembled battery, the capacity of assembled battery is big, Chong Dian access times are many repeatedly, are equivalent to the access times of single battery, long service life, during the secondary cell assembling assembled battery that sub-elects with the method for existing separating secondary cell, its charging times is less than the access times of cell, and the life-span is shorter, and capacity is difficult to guarantee.
4. sorting is convenient.In assorting room, can select the range of capacity and the curve shape of required sorting as required arbitrarily, can also the sorting battery good, bad.
5. cost is low.Therefore method is carried out sorting to battery, and the cycle is short, and device therefor is few, has reduced to be used to measure the required staff of secondary cell characterisitic parameter, makes battery expend cost and reduces relatively.
The method of separating secondary cell of the present invention is applicable to the columniform secondary cell of various models.
Fig. 1 is a secondary cell charge and discharge family curve synoptic diagram.
Fig. 2 is one group of secondary cell charge and discharge performance diagram measuring.
Fig. 3 is the charge and discharge performance diagram of another group secondary cell.
Fig. 4 is datum curve and a permissible variation areal map among Fig. 3.
Fig. 5 is the comparison diagram of the curve ranges of battery 1,3,4 and Fig. 4 among Fig. 3.
Fig. 6 is that another group secondary cell is the comparison diagram of benchmark with the charging platform.
Fig. 7 is a selected secondary cell datum curve figure.
Be described further below by the application of specific embodiment the method for separating secondary cell of the present invention.
Five joints 5# secondary cell to be measured is placed in the charge and discharge pick-up unit of battery, detects the capacity of obtaining and charge and discharge family curve, in the input computing machine, is carried out the comparison of data, figure line by computing machine.Curve as shown in Figure 2, horizontal ordinate is a time T, ordinate is voltage V, C represents capacity among the figure.Determine that range of capacity is at 1185～1215mAh, five measured batteries are numbered 1,2,3,4,5, its capacity such as following table: battery 12345 capacity (mAh) 1,190 1,200 1,205 1,200 1225
Battery in range of capacity is 1,2,3,4, gets rid of battery 5.
In Fig. 2, compare, selecting the 2nd curve is datum curve, by the point on 1 in the horizontal ordinate, 2,3,4,5, the 6 pairing curves is contrast points a, b, c, d, e, f deviation range in ± 30mV scope, the value such as the following table of the every batteries corresponding point position that obtains:
The value of a, the b in the value of ordering of a, b, c, d, e, the f in the battery 1 and the battery 2, c, d, e, f contrast points is compared as seen from the above table, and deviation is all in ± 30mV scope, so battery 1 is selected battery.Similarly, battery 3,4 and battery 2 are compared, battery 3,4 also is selected battery.Can fit together the composition assembled battery with selected battery 1,2,3,4, its yield rate is 100%.
With the method for embodiment 1, the range of capacity of having selected battery 1,2,3,4 is in 1190～1210mAh, in its charge and discharge family curve input computing machine, as shown in Figure 3.Selecting the charge and discharge family curve of battery 2 is datum curve, every deviation range is in ± 40mV on the datum line, as shown in Figure 4, the I and the II that rolls off the production line thus obtain reaching the standard grade, with the curve ranges of the curve of battery 1,3,4 and battery 2 relatively, as shown in Figure 5, the charge and discharge family curve of battery 1,3,4 is all being reached the standard grade I and rolling off the production line between the II, therefore battery 1,2,3,4 is selected battery, and above-mentioned selection course is finished by computing machine.
Press the method for embodiment 1 and determined that the range of capacity of battery 1,2,3,4 is in selected scope 1180～1215mAh, its charge and discharge family curve has been imported in the computing machine, as shown in Figure 6, now to select similar battery of charging stage in the charge and discharge family curve as required.Select by computing machine, at first determine datum curve, selecting the charging platform EF section on the curve of more satisfactory battery 3 is datum line, the charging platform EF section of battery 1,2,4 is compared with the charging platform EF section of battery 3, the charging platform EF section of battery 1,2,3,4 is quite similar, and promptly battery 1,2,3,4 is selected battery.
512 joint 5# batteries are placed in the charge and discharge pick-up unit of secondary cell and detect, capacity that obtains and charge and discharge family curve are all imported in the computing machine, determine capacity between 800～850mAh, selecting as shown in Figure 7, the charge and discharge family curve is a datum curve.Select by computing machine, all capacity are between 800～850mAh, its charge and discharge family curve is similar to Fig. 7 has been battery, otherwise, capacity outside 800～850mAh or its charge and discharge family curve and Fig. 7 differ greatly be bad battery, good battery corresponding pilot lamp in pick-up unit that computing machine sub-elects is bright, and the pilot lamp of bad battery does not work, will get well thus, bad battery separately.
Claims (3)
1. the method for a separating secondary cell is characterized in that: mainly comprise following step:
1) secondary cell is placed in the charge and discharge pick-up unit of battery and detects, obtain the charge and discharge family curve of every batteries, and in the input computing machine;
2) determine the range of capacity of selected secondary cell, the capacity of secondary cell is compared, select the battery in range of capacity;
3) the charge and discharge family curve to the secondary cell in the selected range of capacity compares, and selecting charge and discharge family curve satisfactory is datum curve;
4) on datum curve, select contrast points, provide the deviation range at contrast points place;
5) carry out sorting according to the deviation range at specified contrast points place by computing machine, the value at identical point place on the capacity of every joint secondary cell and the family curve is compared with contrast points, the all battery of its value in deviation range when comparing in the range of capacity of appointment and with contrast points are selected secondary cell
2. the method for a kind of separating secondary cell according to claim 1, it is characterized in that: can also select the characteristic deviation range of charge and discharge, it promptly is correlation curve with the datum curve, the upper and lower line that the trade-off curve deviation changes, then the charge and discharge family curve of every batteries is compared with correlation curve, all pairing batteries of charge and discharge family curve in upper and lower line scope are selected battery.
3. the method for a kind of separating secondary cell according to claim 1, it is characterized in that: when the sorting battery, can also select sectional curve that charging platform, discharge platform or voltage drop difference on the charge and discharge family curve of battery change as benchmark, emphasis is relatively selected a certain section family curve, and certain section similar battery sorting of family curve is come out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95117490 CN1044408C (en) | 1995-11-22 | 1995-11-22 | Method for separating secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95117490 CN1044408C (en) | 1995-11-22 | 1995-11-22 | Method for separating secondary cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1151020A true CN1151020A (en) | 1997-06-04 |
| CN1044408C CN1044408C (en) | 1999-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95117490 Expired - Lifetime CN1044408C (en) | 1995-11-22 | 1995-11-22 | Method for separating secondary cell |
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| CN (1) | CN1044408C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364168C (en) * | 2005-04-27 | 2008-01-23 | 韩伟 | Method for sorting batteries according to battery volt-ampere curve |
| CN100399619C (en) * | 2005-09-20 | 2008-07-02 | 广州擎天实业有限公司 | Real-time tracking alarm secondary cell partial volume method |
| CN101286579B (en) * | 2007-12-25 | 2010-06-02 | 福建省电力试验研究院 | Method of computer matching of valve controlling type accumulator |
| CN101286580B (en) * | 2007-12-25 | 2010-06-02 | 福建省电力试验研究院 | Method of making sets of valve controlling type accumulator |
| CN101949971A (en) * | 2010-09-09 | 2011-01-19 | 湖南科霸汽车动力电池有限责任公司 | Method for selecting low-voltage storage battery |
| CN102698968A (en) * | 2012-06-07 | 2012-10-03 | 北京有色金属研究总院 | Method for sorting lithium-ion power batteries |
| CN102886352A (en) * | 2011-07-21 | 2013-01-23 | 湖北骆驼特种电源有限公司 | Group matching and sorting method of lithium iron phosphate batteries |
| CN102903959A (en) * | 2012-10-30 | 2013-01-30 | 长城汽车股份有限公司 | Matching method of lithium ion batteries |
| CN107024663A (en) * | 2017-04-01 | 2017-08-08 | 湖南银杏数据科技有限公司 | The lithium battery screening technique clustered based on charging curve feature KPCA |
| CN107976636A (en) * | 2017-11-17 | 2018-05-01 | 深圳市恒翼能科技有限公司 | Method and system based on the complete discharge and recharge data of battery compartment discharge and recharge data reconstruction |
| US10734689B2 (en) | 2017-11-17 | 2020-08-04 | Shenzhen Hynn Technologies Co., Ltd. | Method and system for reconstructing complete charging-discharging data based on partial charging-discharging data of battery |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101101323B (en) * | 2007-07-23 | 2010-09-08 | 周汉文 | Quick detection method for lithium battery capacity with maximum limit charge voltage 4.2V |
-
1995
- 1995-11-22 CN CN 95117490 patent/CN1044408C/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364168C (en) * | 2005-04-27 | 2008-01-23 | 韩伟 | Method for sorting batteries according to battery volt-ampere curve |
| CN100399619C (en) * | 2005-09-20 | 2008-07-02 | 广州擎天实业有限公司 | Real-time tracking alarm secondary cell partial volume method |
| CN101286579B (en) * | 2007-12-25 | 2010-06-02 | 福建省电力试验研究院 | Method of computer matching of valve controlling type accumulator |
| CN101286580B (en) * | 2007-12-25 | 2010-06-02 | 福建省电力试验研究院 | Method of making sets of valve controlling type accumulator |
| CN101949971A (en) * | 2010-09-09 | 2011-01-19 | 湖南科霸汽车动力电池有限责任公司 | Method for selecting low-voltage storage battery |
| CN101949971B (en) * | 2010-09-09 | 2012-05-30 | 湖南科霸汽车动力电池有限责任公司 | Method for selecting low-voltage storage battery |
| CN102886352A (en) * | 2011-07-21 | 2013-01-23 | 湖北骆驼特种电源有限公司 | Group matching and sorting method of lithium iron phosphate batteries |
| CN102698968A (en) * | 2012-06-07 | 2012-10-03 | 北京有色金属研究总院 | Method for sorting lithium-ion power batteries |
| CN102903959A (en) * | 2012-10-30 | 2013-01-30 | 长城汽车股份有限公司 | Matching method of lithium ion batteries |
| CN102903959B (en) * | 2012-10-30 | 2014-12-03 | 长城汽车股份有限公司 | Matching method of lithium ion batteries |
| CN107024663A (en) * | 2017-04-01 | 2017-08-08 | 湖南银杏数据科技有限公司 | The lithium battery screening technique clustered based on charging curve feature KPCA |
| CN107024663B (en) * | 2017-04-01 | 2019-04-05 | 湖南银杏数据科技有限公司 | Lithium battery screening technique based on charging curve feature KPCA cluster |
| CN107976636A (en) * | 2017-11-17 | 2018-05-01 | 深圳市恒翼能科技有限公司 | Method and system based on the complete discharge and recharge data of battery compartment discharge and recharge data reconstruction |
| US10734689B2 (en) | 2017-11-17 | 2020-08-04 | Shenzhen Hynn Technologies Co., Ltd. | Method and system for reconstructing complete charging-discharging data based on partial charging-discharging data of battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1044408C (en) | 1999-07-28 |
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