CN1876256B - Battery screening system and method - Google Patents
Battery screening system and method Download PDFInfo
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- CN1876256B CN1876256B CN200510035193A CN200510035193A CN1876256B CN 1876256 B CN1876256 B CN 1876256B CN 200510035193 A CN200510035193 A CN 200510035193A CN 200510035193 A CN200510035193 A CN 200510035193A CN 1876256 B CN1876256 B CN 1876256B
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- 238000012216 screening Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims description 21
- 238000005070 sampling Methods 0.000 claims abstract description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
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Abstract
The related cell screening system comprises: a computer to set work parameter contained the terminal voltage, a voltage sampling control module and a constant voltage/current module connected to ends of target cell to sample and discharge respectively, and a SCM connected to all former devices.
Description
Technical field
The present invention relates to a kind of battery screening system and method, relate in particular to a kind of screening system and method that low-voltage battery detects that be used for.
Background technology
Along with improving constantly of people's level of cultural life, the core technology of associated electrical product is maked rapid progress, and battery has become the indispensable necessary article of modern, and it makes people use the demand of various portable electronic equipments to be achieved in live and work.
At present, in the lithium ion battery production process, after the lithium battery preliminary filling is finished, before the forming and capacity dividing, need carry out battery screening usually, the battery screening that voltage the is lower than a certain value processing of coming out to demote.
Yet, after normally adopting the artificial reading of universal meter to record voltage, existing method of screening A-battery before forming and capacity dividing carries out, promptly artificial nib with universal meter links to each other with the both positive and negative polarity of battery, universal meter shows voltage, again the numerical value of demonstration and the numerical value of requirement are compared, when the numerical value that the numeric ratio of demonstration requires is low this battery is chosen degradation and handle.Therefore, the existing low-voltage battery of this kind screening detection method efficient is lower, and hand labor intensity is big, cause being subjected to human factor influence big, False Rate is higher.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, and provide a kind of battery screening system and method, thereby solve the problem that screening technique efficient is low, hand labor intensity is big, False Rate is high that present low-voltage battery detects.
The technical solution adopted in the present invention is: a kind of battery screening system is provided, it comprises computer, single-chip microcomputer, voltage sample control module and constant flow module, wherein said computer, voltage sample control module, constant flow module are connected with single-chip microcomputer respectively, and the voltage sample control module is connected with waiting the two ends of screening battery respectively with constant flow module; Final voltage by the computer settings battery screening, described final voltage is sent to single-chip microcomputer, after single-chip microcomputer is received a mandate, constant flow module is treated the screening battery discharge, the voltage at voltage sample control module circle collection battery two ends, under the constant-current discharge pattern, the scope of described discharge current size is the 5-50 milliampere, and the scope of working time is 0.5-5 minute; To the sample final voltage of gained voltage and setting of single-chip microcomputer relatively judges whether to reach final voltage.
It also comprises indicator lamp, and it is connected with described single-chip microcomputer, is used to indicate the screened battery that goes out.
A kind of battery screening method of using above-mentioned battery screening system, it may further comprise the steps:
A) by the running parameter of computer settings battery screening, described running parameter comprises final voltage;
B) above-mentioned running parameter is sent to single-chip microcomputer;
C) after single-chip microcomputer was received a mandate, constant flow module was treated the screening battery discharge, the voltage at voltage sample control module circle collection battery two ends; Under the constant-current discharge pattern, the scope of described discharge current size is the 5-50 milliampere, and the scope of working time is 0.5-5 minute;
D) will the sample final voltage of gained voltage and above-mentioned setting relatively judges whether to reach final voltage.
When sampling gained voltage reaches described final voltage, also comprise by an indicator lamp that is connected with described single-chip microcomputer and indicate the step of screening battery.
Described running parameter also comprises working time, discharge current.
Described discharge current is the 10-20 milliampere.
The described working time is 1-3 minute.
The scope of described final voltage is the 3.7-3.9 volt.
If battery described to be screened is the box hat battery, described final voltage is 3.79 volts; If battery described to be screened is an aluminum-shell battery, described final voltage is 3.77 volts.
Beneficial effect of the present invention is: battery screening system of the present invention and method contrast the voltage of battery to be detected by computer and Single-chip Controlling constant current/constant voltage module and the collection of voltage sample control module, and can realize easily that a plurality of batteries detect simultaneously, the efficient height, hand labor intensity is low and False Rate is low.
Description of drawings
Fig. 1 is the structural representation of battery screening system of the present invention;
Fig. 2 is the schematic flow sheet of battery screening method of the present invention.
The specific embodiment
See also Fig. 1, battery screening system of the present invention comprises computer 10, single-chip microcomputer 20, voltage sample control module 30, constant current/constant voltage module 40 and indicator lamp 50.Aforementioned calculation machine 10, voltage sample control module 30, constant current/constant voltage module 40 and indicator lamp 50 are connected with single-chip microcomputer 20 respectively, and voltage sample control module 30 is connected with waiting the two ends of screening battery 60 respectively with constant current/constant voltage module 40.
See also Fig. 2, battery screening method of the present invention may further comprise the steps:
201. the user is by the running parameter of computer 10 settings battery screening system of the present invention, present embodiment comprises mode of operation (constant-current discharge or constant voltage discharge), working time, final voltage, the discharge current/voltage of setting constant current/constant voltage module 40;
202. above-mentioned parameter is sent to single-chip microcomputer 20;
203. after single-chip microcomputer 20 was received a mandate, constant current/constant voltage module 40 was treated 60 discharges of screening battery, voltage sample control module 30 circle collections wait to screen the voltage at battery 60 two ends;
The final voltage of gained voltage and above-mentioned setting relatively judges whether to reach final voltage 204. will sample, if reached final voltage, then indicator lamp 50 is lighted.
Be appreciated that, in said method, the mode of operation of constant current/constant voltage module 40 can be constant-current charge or constant-voltage charge, with the constant-current discharge is example, and its working time will be set according to the produced on-site situation, but unsuitable long, originally voltage was excessive after making at that time voltage deviation for a long time, increase False Rate, cause the A-battery ratio to increase, the pass of voltage deviation value and working time is:
Δ U=α * I*t/C, wherein α is the relevant coefficient of current density, and I is a discharge current, and t is the working time, and C is a capacity of waiting to screen battery 60;
By above-mentioned formula and the experiment as can be known, the discharge current margin size of battery screening system of the present invention and method is 5-50mA, preferred 10-20mA, if discharge current too small (＜5mA), then do not reach precision prescribed, may cause results abnormity, if discharge current excessive (＞50mA), it is very fast to cause voltage to descend, and will make original normal battery erroneous judgement be low-voltage battery; The discharge working time is 0.5-5min, preferred 1-3min, if the working time too short (＜0.5min), can make the operative employee have little time defective battery (being low-voltage battery) is chosen, if the working time long (＞5min), the voltage of battery 60 descends too much, original normal battery erroneous judgement can be low-voltage battery equally; In addition, because existing battery generally includes box hat battery and aluminum-shell battery, it exists different aspect structure and manufacturing process, cause in the standard (being final voltage) of judging low-voltage battery also different, but general range all is arranged between the 3.7-3.9 volt, if final voltage was provided with low (＜3.7 volts), can make original underproof battery erroneous judgement be qualified battery, if final voltage is provided with too high (|＞3.9 volts), can make original qualified battery erroneous judgement is defective battery; In the present embodiment, the box hat battery judges that the final voltage standard of low-voltage battery is 3.79 volts, and aluminum-shell battery judges that the final voltage standard of low-voltage battery is 3.77 volts.
Be appreciated that battery screening system of the present invention and method can screen a plurality of batteries to be screened simultaneously, only need computer 10 is connected simultaneously and control many cover single-chip microcomputers 20, voltage sample control module 30, constant current/constant voltage module 40 and indicator lamps 50 and can realize.
Claims (9)
1. battery screening system, it is characterized in that comprising computer, single-chip microcomputer, voltage sample control module and constant flow module, wherein said computer, voltage sample control module, constant flow module are connected with single-chip microcomputer respectively, and the voltage sample control module is connected with waiting the two ends of screening battery respectively with constant flow module; Final voltage by the computer settings battery screening, described final voltage is sent to single-chip microcomputer, after single-chip microcomputer is received a mandate, constant flow module is treated the screening battery discharge, the voltage at voltage sample control module circle collection battery two ends, under the constant-current discharge pattern, the scope of described discharge current size is the 5-50 milliampere, and the scope of working time is 0.5-5 minute; To the sample final voltage of gained voltage and setting of single-chip microcomputer relatively judges whether to reach final voltage.
2. battery screening system as claimed in claim 1 is characterized in that: it also comprises indicator lamp, and it is connected with described single-chip microcomputer, is used to indicate the screened battery that goes out.
3. battery screening method of using battery screening system as claimed in claim 1 is characterized in that may further comprise the steps:
A) by the running parameter of computer settings battery screening, described running parameter comprises final voltage;
B) above-mentioned running parameter is sent to single-chip microcomputer;
C) after single-chip microcomputer was received a mandate, constant flow module was treated the screening battery discharge, the voltage at voltage sample control module circle collection battery two ends; Under the constant-current discharge pattern, the scope of described discharge current size is the 5-50 milliampere, and the scope of working time is 0.5-5 minute;
D) will the sample final voltage of gained voltage and above-mentioned setting relatively judges whether to reach final voltage.
4. battery screening method as claimed in claim 3 is characterized in that: when sampling gained voltage reaches described final voltage, also comprise by an indicator lamp that is connected with described single-chip microcomputer and indicate the step of screening battery.
5. battery screening method as claimed in claim 3 is characterized in that: described running parameter also comprises working time, discharge current.
6. battery screening method as claimed in claim 3 is characterized in that: described discharge current is the 10-20 milliampere.
7. battery screening method as claimed in claim 3 is characterized in that: the described working time is 1-3 minute.
8. battery screening method as claimed in claim 3 is characterized in that: the scope of described final voltage is the 3.7-3.9 volt.
9. battery screening method as claimed in claim 8 is characterized in that: if battery described to be screened is the box hat battery, described final voltage is 3.79 volts; If battery described to be screened is an aluminum-shell battery, described final voltage is 3.77 volts.
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| CN200510035193A CN1876256B (en) | 2005-06-06 | 2005-06-06 | Battery screening system and method |
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| CN200510035193A CN1876256B (en) | 2005-06-06 | 2005-06-06 | Battery screening system and method |
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| CN1876256B true CN1876256B (en) | 2010-05-12 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100573180C (en) * | 2007-08-31 | 2009-12-23 | 中银（宁波）电池有限公司 | A kind of automatic electric checking machine of dry cell |
| 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 |
| 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 |
| CN102148393B (en) * | 2010-02-08 | 2014-11-19 | 比克国际(天津)有限公司 | Battery pack and manufacturing method thereof |
| 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 |
| CN102059220B (en) * | 2010-11-19 | 2013-01-09 | 天津力神电池股份有限公司 | Integrated system for grading and sorting batteries |
| CN102967832A (en) * | 2012-12-17 | 2013-03-13 | 天津力神电池股份有限公司 | Battery testing and sorting system |
| CN106443475A (en) * | 2016-10-21 | 2017-02-22 | 国网山东省电力公司电力科学研究院 | Retired power battery dismounting-free reuse screening method based on operation big data |
| CN106772096A (en) * | 2017-01-20 | 2017-05-31 | 国轩新能源（苏州）有限公司 | The screening technique of low-voltage lithium battery |
| 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 |
| KR102391533B1 (en) * | 2018-10-05 | 2022-04-28 | 주식회사 엘지에너지솔루션 | Method for diagnosing a low voltage of a secondary cell and apparatus thereof |
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| CN1508901A (en) * | 2002-12-18 | 2004-06-30 | 北京有色金属研究总院 | Method for scparating secodary cell |
| CN2700892Y (en) * | 2003-05-10 | 2005-05-18 | 比亚迪股份有限公司 | Battery detection sorting instrument |
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- 2005-06-06 CN CN200510035193A patent/CN1876256B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4363407A (en) * | 1981-01-22 | 1982-12-14 | Polaroid Corporation | Method and system for testing and sorting batteries |
| CN2280893Y (en) * | 1996-12-13 | 1998-05-06 | 殷志斌 | Testing device for cell production |
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Effective date of registration: 20160824 Address after: Kwai Chung street Beek Industrial Park in Longgang District of Shenzhen City, Guangdong Province, No. 6 building 518000 Patentee after: SHENZHEN BAK POWER BATTERY Co.,Ltd. Address before: 518000 Beek Industrial Park, Kwai Chung Town, Longgang District, Guangdong, Shenzhen Patentee before: SHENZHEN BAK BATTERY Co.,Ltd. |
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