CN103128061A - Method and equipment of sorting dynamic consistency of power batteries - Google Patents
Method and equipment of sorting dynamic consistency of power batteries Download PDFInfo
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- CN103128061A CN103128061A CN2011103977503A CN201110397750A CN103128061A CN 103128061 A CN103128061 A CN 103128061A CN 2011103977503 A CN2011103977503 A CN 2011103977503A CN 201110397750 A CN201110397750 A CN 201110397750A CN 103128061 A CN103128061 A CN 103128061A
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Abstract
The invention discloses a method and equipment of sorting dynamic consistency of power batteries. The method is that charging of high magnification is carried out when the voltage of a battery to be tested is located on platform voltage U0, the charging is stopped when charging time is T1, discharging is carried out on the battery to be tested until the voltage of the battery to be tested is located on the platform voltage U0, the discharging of the high magnification is carried out on the battery to be tested, the time of the discharging of the high magnification is T1, the discharging is finished, at the same the voltage U2 of the battery to be tested is recorded, the difference value of U1 and U0 and the difference value of U0 and U2 are used as the basis of the sorting the dynamic consistency of the power batteries, a battery pack composed of batteries sorted with the method is good in performance due to the fact that the testing method is similar to the practical working condition of the battery.
Description
Technical field
The present invention relates to the method and apparatus of a kind of electrokinetic cell dynamic conformance sorting, belong to the battery detecting field.
Background technology
in recent years along with the fast development of electric automobile, demand to battery is increasing, the needed number of batteries of electric automobile is more than 10,000, the battery pack of the battery of big figure composition requires the battery consistency of composition high especially like this, the mileages of continuation that present people know electric motor car is short, the problem that the battery pack life-span is short, reason is that inner certain battery of battery pack and other battery performance are inconsistent, the super-charge super-discharge phenomenon can appear in this battery in the process of batteries charging discharge, when this cell voltage is too high make whole battery pack reach in advance charging during deboost sample circuit can think that this battery pack has been charged and finish to stop being batteries charging, caused like this charge less of whole battery pack, the performance of battery pack of long duration has to descend significantly and the short problem of mileages of continuation will occur.
The difference of the Initial Consistency of current battery usually derives from the present solution of the error that accumulates in manufacture process and mainly contains two kinds: the one, improve the technological level of making battery, and the 2nd, battery sorting performance is consistent by suitable method for separating out makes up again.
Common battery sorting method has platform voltage separating method, static capacity separating method, internal resistance separating method, and in practice, we find, the battery that these static characteristics of process battery sort out, after being operated in identical lower a period of time of condition, the performance of battery itself produces great changes, battery capacity, internal resistance, charging and discharging curve are just no longer convergent, result causes battery pack overall performance degradation, the combined effect of battery pack is undesirable, and the present invention proposes kind of the method and apparatus of electrokinetic cell dynamic conformance sorting for these situations.
Summary of the invention
The present invention proposes the method and apparatus of a kind of electrokinetic cell dynamic conformance sorting, and the method can be carried out the conforming sorting of electrokinetic cell fast, extremely approaches unanimously so the operating mode of this method of testing and actual battery is the very similar battery performance that sub-elects.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
The present invention proposes the method and apparatus of a kind of electrokinetic cell dynamic conformance sorting, comprises to show and operation interface, and controller, charge-discharge modules, the high speed analog-to-digital conversion unit, electric current and voltage analog quantity processing unit, tested battery totally 6 parts form, and see accompanying drawing 1.
With reference to the accompanying drawings 1, the course of work of the present invention is described:
tested battery is in platform voltage U0 Time Controller control charge-discharge modules and carries out the high magnification charging to tested battery, at this moment electric current and voltage analog quantity processing unit is processed into the analog quantity that the high speed analog-to-digital conversion unit can be changed to the electric current and voltage analog quantity, the high speed analog-to-digital conversion unit converts the electric current and voltage analog quantity to data signal again and sends controller to, this process is ongoing, stop charging after the time of giving tested battery high magnification charging arrives T1 and record the voltage U 1 of tested battery at this moment, give the platform voltage U0 of tested battery discharge to battery, carry out powerful discharge at this moment for again tested battery, the time of high-multiplying power discharge is similarly T1, discharge finishes to record simultaneously tested cell voltage U2, parameter acquisition to tested battery finishes, the magnitude of voltage that controller calculating U1 subtracts U0 is U3, the magnitude of voltage that calculating U0 subtracts U2 is U4, can be according to U3 and U4 to cell classification according to the sorting standard controller that is arranged on controller, the tested cell voltage of the whole course of work, charging and discharging currents, sorting classification controller can be sent in real time demonstration and operation interface goes to show, can preset the sorting classification by demonstration and operation interface user is kept in controller.
Beneficial effect of the present invention:
1, the method and apparatus of a kind of electrokinetic cell dynamic conformance sorting is provided
2, a kind of low cost, the fast electrokinetic cell method for separating of separation velocity are proposed
3, the electrokinetic cell method for separating of a kind of intellectuality, high reliability is proposed.
The specific embodiment:
In order to make technical scheme of the present invention clearer, below in conjunction with drawings and Examples, the present invention is described in more detail, and instantiation described herein only in order to explain the present invention, is not limited to the present invention.
Embodiment:
Prepare 100 of 18650 type lithium ion batteries, as tested battery, method according to electrokinetic cell dynamic conformance of the present invention sorting is carried out sorting, sub-elect 10 same class performance batteries and form battery pack 1, carry out sorting with the platform voltage separating method again, sub-elect 10 same class performance batteries and form battery pack 2, carry out sorting with the method for static capacity sorting again, sub-elect 10 same class performance batteries and form battery pack 3, sub-elect 10 same class performance batteries with the internal resistance separating method equally and form battery pack 4.
Take battery pack 1, battery pack 2, battery pack 3, battery pack 4 to test under the same operating mode, the cycle life of battery pack 1 is 343 times, the cycle life of battery pack 2 is 298 times, the cycle life of battery pack 3 is 323 times, the cycle life of battery pack 4 is 326 times, therefore the result that can know sorting of the present invention can make the dynamic property of electrokinetic cell more approaching consistent, and the battery pack life-span of composition can be more longer.
Description of drawings:
Accompanying drawing 1 is the schematic diagram of the equipment part of electrokinetic cell dynamic conformance sorting.
Claims (2)
1. the method and apparatus of electrokinetic cell dynamic conformance sorting, comprise and show and operation interface, controller, charge-discharge modules, the high speed analog-to-digital conversion unit, electric current and voltage analog quantity processing unit, tested battery totally 6 parts forms, it is characterized by: tested battery is in platform voltage U0 Time Controller control charge-discharge modules and carries out the high magnification charging to tested battery, at this moment electric current and voltage analog quantity processing unit is processed into the analog quantity that the high speed analog-to-digital conversion unit can be changed to the electric current and voltage analog quantity, the high speed analog-to-digital conversion unit converts the electric current and voltage analog quantity to data signal again and sends controller to, this process is ongoing, stop charging after the time of giving tested battery high magnification charging arrives T1 and record the voltage U 1 of tested battery at this moment, give the platform voltage U0 of tested battery discharge to battery, carry out powerful discharge at this moment for again tested battery, the time of high-multiplying power discharge is similarly T1, discharge finishes to record simultaneously tested cell voltage U2, parameter acquisition to tested battery finishes, the magnitude of voltage that controller calculating U1 subtracts U0 is U3, the magnitude of voltage that calculating U0 subtracts U2 is U4, can be according to U3 and U4 to cell classification according to the sorting standard controller that is arranged on controller, the tested cell voltage of the whole course of work, charging and discharging currents, sorting classification controller can be sent in real time demonstration and operation interface goes to show, can preset the sorting classification by demonstration and operation interface user is kept in controller.
2. the method and apparatus of a kind of electrokinetic cell dynamic conformance according to claim 1 sorting, is characterized in that: in the battery testing process, increased a powerful current impulse battery is encouraged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110397750.3A CN103128061B (en) | 2011-12-05 | 2011-12-05 | Method and equipment of sorting dynamic consistency of power batteries |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110397750.3A CN103128061B (en) | 2011-12-05 | 2011-12-05 | Method and equipment of sorting dynamic consistency of power batteries |
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| CN103128061A true CN103128061A (en) | 2013-06-05 |
| CN103128061B CN103128061B (en) | 2015-04-08 |
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| CN201110397750.3A Expired - Fee Related CN103128061B (en) | 2011-12-05 | 2011-12-05 | Method and equipment of sorting dynamic consistency of power batteries |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106033115A (en) * | 2015-03-20 | 2016-10-19 | 神讯电脑(昆山)有限公司 | Battery screening method |
| CN108732510A (en) * | 2018-07-19 | 2018-11-02 | 哈尔滨工业大学 | Lithium ion battery conformity classification group technology based on internal feature |
| CN109772753A (en) * | 2019-03-05 | 2019-05-21 | 中国科学院自动化研究所 | Power battery separation system and method |
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| CA2220364A1 (en) * | 1995-05-08 | 1996-11-14 | Koninklijke Ptt Nederland N.V. | A method and device for sorting batteries |
| US20040155626A1 (en) * | 2003-02-11 | 2004-08-12 | Hedegor Erik W. | Battery tester and sorting apparatus |
| CN101515022A (en) * | 2008-02-19 | 2009-08-26 | 比亚迪股份有限公司 | Method for evaluating consistency of batteries |
| CN101714663A (en) * | 2009-11-19 | 2010-05-26 | 珠海华冠电子科技有限公司 | Automatic formation and separation method of nickel-metal hydride batteries |
| CN101777669A (en) * | 2010-02-02 | 2010-07-14 | 江西联威新能源有限公司 | Precharging formation method for lithium ion battery |
| CN101907688A (en) * | 2010-08-02 | 2010-12-08 | 天津力神电池股份有限公司 | Method for detecting electrical property consistency of lithium ion battery |
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2011
- 2011-12-05 CN CN201110397750.3A patent/CN103128061B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CA2220364A1 (en) * | 1995-05-08 | 1996-11-14 | Koninklijke Ptt Nederland N.V. | A method and device for sorting batteries |
| US20040155626A1 (en) * | 2003-02-11 | 2004-08-12 | Hedegor Erik W. | Battery tester and sorting apparatus |
| CN101515022A (en) * | 2008-02-19 | 2009-08-26 | 比亚迪股份有限公司 | Method for evaluating consistency of batteries |
| CN101714663A (en) * | 2009-11-19 | 2010-05-26 | 珠海华冠电子科技有限公司 | Automatic formation and separation method of nickel-metal hydride batteries |
| CN101777669A (en) * | 2010-02-02 | 2010-07-14 | 江西联威新能源有限公司 | Precharging formation method for lithium ion battery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106033115A (en) * | 2015-03-20 | 2016-10-19 | 神讯电脑(昆山)有限公司 | Battery screening method |
| CN108732510A (en) * | 2018-07-19 | 2018-11-02 | 哈尔滨工业大学 | Lithium ion battery conformity classification group technology based on internal feature |
| CN108732510B (en) * | 2018-07-19 | 2020-07-07 | 哈尔滨工业大学 | Lithium ion battery consistency screening and grouping method based on internal characteristics |
| CN109772753A (en) * | 2019-03-05 | 2019-05-21 | 中国科学院自动化研究所 | Power battery separation system and method |
| CN109772753B (en) * | 2019-03-05 | 2020-03-06 | 中国科学院自动化研究所 | Power battery sorting system and method |
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| CN103128061B (en) | 2015-04-08 |
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Granted publication date: 20150408 Termination date: 20171205 |