CN105182244A - Battery test matching screening method - Google Patents
Battery test matching screening method Download PDFInfo
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- CN105182244A CN105182244A CN201510555300.0A CN201510555300A CN105182244A CN 105182244 A CN105182244 A CN 105182244A CN 201510555300 A CN201510555300 A CN 201510555300A CN 105182244 A CN105182244 A CN 105182244A
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Abstract
The invention relates to a battery test matching screening method. The battery test matching screening method comprises: a process of randomly selecting a plurality of batteries for appearance ocular estimation and index testing before the batteries are used; a battery matching screening process carried out when the batteries are used: the batteries of the same kind are matched to form one group according to classifications of battery factory parameters, after one charge and discharge cycle, one group of vulnerable batteries which are fully charged fastest and completely discharged fastest are selected, and the vulnerable batteries are replaced for completing matching; and a battery maintenance process carried out through a single battery maintenance device after the batteries are used or when the batteries are used. According to the invention, the vulnerable batteries screened in a matching mode can be utilized in a gradient manner according to different conditions, and maximum resource utilization of waste and old power batteries is realized.
Description
Technical field
The present invention relates to energy-storage battery field, particularly a kind of battery testing group gas-mixing screening method.
Background technology
In use, the influence factor in its life-span is many for battery---and voltage, temperature, charge-discharge electric power etc., wherein charge-discharge electric power is the key factor affecting battery life.
After battery uses certain phase, due to the increase of the aging of battery material and internal resistance, battery capacity is caused to reduce, the bound voltage of cell and temperature variation little, but in large current density electric process, due to internal resistance change and material aging, monomer voltage is being about to be full of, during emptying, voltage arrives the speed of bound, in order to more good utilisation battery, reach battery protection discharge and recharge, now discharge and recharge strategy need adjust, when battery is charged to 80%, in order to charge more fully, detect that maximum permission charging current should suitably reduce according to BMS, simultaneously when battery discharge to about 30% time, discharge current suitably reduces, to reach, battery protection is discharged, improve battery utilization factor simultaneously.
Along with the fast development of electric automobile and energy storage, battery uses and also gets more and more; Because electrokinetic cell manufacturing process is advanced, even if still keep very high security and electrical property after battery capacity reduction is scrapped, be necessary that the mode adopting echelon to utilize realizes the maximum resource utilization of waste and old electrokinetic cell.When considering a battery point gradient to recycle, after detecting and processing, electrokinetic cell well-tended appearance, there is no breakage, the effective situation of each function element under, echelon can be carried out utilize in fields such as communication, energy storage, also can be used on the short distance electric space vehicle at scenic spot, park, tourist coach, golf cart, as the power source of these low-speed electronic cars.The battery that second culling gets off from energy storage device or low-speed electronic car, then carry out reclaiming, disassemble, regenerate.
Thus, need badly and a kind ofly can effectively test battery capacity etc. and then battery be carried out to the method for group gas-mixing screening.
Summary of the invention
The object of the present invention is to provide a kind of battery testing group gas-mixing screening method, echelon utilization can be carried out to the battery filtered out, realize the maximum resource utilization to waste and old electrokinetic cell.
In order to achieve the above object, technical scheme of the present invention is to provide a kind of battery testing group gas-mixing screening method, wherein comprises:
The Appearance Visual that the some batteries of random choose are carried out before battery uses and index test process;
The battery group gas-mixing screening process of carrying out when battery uses: wherein, to dispatch from the factory parametric classification according to battery, the battery of identical category is made into one group, select in one group to charge after discharge and recharge one circulation and be full of the soonest, the short slab battery of the fastest emptying of electric discharge, changes short slab battery and completes combo; And,
The battery maintenance process of being undertaken by cell service equipment after battery uses or in use procedure.
Preferably, the range estimation process before battery uses, for checking whether battery meets the following conditions: profile is clean, without dirty juice or slight crack; Without bulge or distortion; Pole is without rusty stain; Screw thread is clean, without sliding dental phenomenon.
Preferably, the index test carried out before battery uses, comprises:
With multimeter test battery voltage; And,
When testing 0.3C, 0.5C, 1C respectively with cell service equipment, by the true capacity after battery charging again electric discharge.
Preferably, after three kinds of situations have been tested, check whether battery has bulge and the too high situation of shell temperature rise, and checked the battery charging and discharging curve in three situations.
Preferably, nominal voltage is 3.2V, stops the ferric phosphate lithium cell that charging voltage is 3.6V, termination electric discharge pressure is 2.0V,
The capacity of battery in following three kinds of situations is tested respectively with cell service equipment:
When 0.3C, battery is charged to 3.65V, then discharges into 2.5V, calculate the true capacity of battery;
When 0.5C, battery is charged to 3.65V, then discharges into 2.5V, calculate the true capacity of battery;
When 1C, battery is charged to 3.65V, then discharges into 2.5V, calculate the true capacity of battery.
Preferably, when carrying out battery group gas-mixing screening process, carry out cell classification according to the battery principle that voltage is consistent, capacity is consistent, outward appearance is consistent in parameter of dispatching from the factory;
The battery of voltage difference in setting numerical value is classified as a class;
Multiple serial battery in one class are formed battery modules, this battery module is once charged and/or detects after discharge, rejecting short slab battery wherein.
Preferably, when carrying out battery group gas-mixing screening process, also carry out cell classification according to the battery principle that charging and discharging curve is consistent, internal resistance is consistent, self-discharge rate is consistent in parameter of dispatching from the factory further.
Preferably, when carrying out battery maintenance process,
Short slab battery is judged by cell service equipment;
To capacity or voltage and the inconsistent intact battery of whole Battery pack, safeguarded by cell service equipment, make it reach the mean state of whole Battery pack;
To because overcharging or cross the battery put and cause losing efficacy, activated by cell service equipment, make it return to normal technology index;
To there is abnormal battery, by cell service equipment test charging and discharging curve to predict its actual SOH and SOC, and it is made to reach combo requirement by safeguarding and activating.
Battery screening combo the present invention can be carried out echelon utilization by the present invention, whether by, intact or super-charge super-discharge lost efficacy or there are the different situations such as abnormal and carries out maintenances respectively and activate the battery (as short slab battery) gone out group gas-mixing screening, realized the maximum resource utilization to waste and old electrokinetic cell.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of battery testing group gas-mixing screening method of the present invention.
Embodiment
For the ferric phosphate lithium cell of SE200FI model, introduce battery testing group gas-mixing screening method of the present invention.The nominal voltage of described battery is 3.2V, termination charging voltage is 3.6V, stop electric discharge pressure is 2.0V, the advantages such as have security good, have extended cycle life, specific energy is high, memory-less effect, easy to maintenance.
The positive and negative electrode material adopted due to each manufacturer, the quality of electrolyte and technique are different, its performance are understood some difference.Such as same model (standard cell of same encapsulation), the capacity of its battery has bigger difference (10% ~ 20%).
Battery testing group gas-mixing screening method of the present invention, be included in the battery testing process of carrying out before battery uses, that is, the some batteries of random choose do the assessment test of following content:
A, by range estimation, check battery whether meet the following conditions:
(1) profile clean, any dirty juice, slight crack etc. can not be had;
(2) bulge or distortion can not be had;
(3) pole can not have any rusty stain;
(4) screw thread is clean, can not occur sliding dental phenomenon, is screwed to the end and takes out, can not have sliding dental phenomenon with screw;
B, carry out the index test of battery, emphasis is voltage and capacity performance index:
(1) voltage, with multimeter test battery voltage;
(2) with the capacity of service equipment test battery, when 0.3C, battery is charged to 3.65V, then discharges into 2.5V, calculate the true capacity of battery;
(3) with the capacity of service equipment test battery, when 0.5C, battery is charged to 3.65V, then discharges into 2.5V, calculate the true capacity of battery;
(4) with the capacity of service equipment test battery, when 1C, battery is charged to 3.65V, then discharges into 2.5V, calculate the true capacity of battery.
Above B(2) after ~ three kinds of situations of (4) have tested, should there is not bulge and the too high situation of shell temperature rise in battery; If possible, the charging and discharging curve of three test batteries can be recorded, see that whether the situation of change of curve is normal.
Battery testing group gas-mixing screening method of the present invention, also be included in the battery group gas-mixing screening process of carrying out when battery uses, namely, to dispatch from the factory parametric classification according to battery, the battery of identical category is made into one group, select the short slab battery in a group after discharge and recharge one circulation, change short slab battery, combo completes.
1, battery dispatches from the factory parametric classification:
Be the most simply according to three principle of correspondence classification: voltage is consistent, capacity is consistent, outward appearance is consistent.When conditions permit, can also consistent according to charging and discharging curve, that internal resistance is consistent, self-discharge rate is consistent principle classify further.
2, the identical combo of classification:
According to the situation of total sample number, voltage difference can be fixed on certain quantity (such as ± 2mv or ± 3mv), the battery in this difference, can be classified as a class.
3, short slab battery is screened:
Short slab battery refers to charging and is full of the soonest, the battery of the fastest emptying of electric discharge.When cell classification, due to in the uncomprehending situation of original battery, what uniquely have is exactly voltage and outward appearance, but it is not real to each cell test capacity, so the possibility being mixed into short slab battery after combo exists, need charge or discharge (the formation battery module of such as, 24 batteries can being connected doing a short time, screen in this battery module), these short slab batteries are rejected.
Battery testing group gas-mixing screening method of the present invention, is also included in battery and uses the battery maintenance process of carrying out in rear or use procedure.This work is very important work in whole combo, adopts cell service equipment (DWY) to complete.
The battery screened has two kinds, and a kind of is intact battery, a kind of true problematic battery being.
1, DWY is adopted quickly short slab cell to be judged;
2, to intact battery, due to capacity or voltage and whole Battery pack inconsistent, DWY can be adopted to carry out short time maintenance to this battery, reach whole group of mean state fast;
3, to some because overcharging, cross put cause lost efficacy battery, DWY can be adopted to activate this battery, make it return to normal technology index;
4, abnormal battery may be there is to some, by DWY, the charging and discharging curve of this battery can be tested out, predict the actual SOH(health status of this battery in advance) and SOC(state-of-charge).By safeguarding and activating, battery is reached can the requirement of combo.
In sum, by battery testing group gas-mixing screening method of the present invention, combo can be carried out to the battery filtered out and realize echelon utilization, the utilization of resources of waste and old electrokinetic cell can be maximized.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (8)
1. a battery testing group gas-mixing screening method, is characterized in that, comprises:
The Appearance Visual that the some batteries of random choose are carried out before battery uses and index test process;
The battery group gas-mixing screening process of carrying out when battery uses: wherein, to dispatch from the factory parametric classification according to battery, the battery of identical category is made into one group, select in one group to charge after discharge and recharge one circulation and be full of the soonest, the short slab battery of the fastest emptying of electric discharge, changes short slab battery and completes combo; And,
The battery maintenance process of being undertaken by cell service equipment after battery uses or in use procedure.
2. battery testing group gas-mixing screening method as claimed in claim 1, is characterized in that,
Range estimation process before battery uses, for checking whether battery meets the following conditions: profile is clean, without dirty juice or slight crack; Without bulge or distortion; Pole is without rusty stain; Screw thread is clean, without sliding dental phenomenon.
3. battery testing group gas-mixing screening method as claimed in claim 1, is characterized in that,
The index test carried out before battery uses, comprises:
With multimeter test battery voltage; And,
When testing 0.3C, 0.5C, 1C respectively with cell service equipment, by the true capacity after battery charging again electric discharge.
4. battery testing group gas-mixing screening method as claimed in claim 3, is characterized in that,
After three kinds of situations have been tested, check whether battery has bulge and the too high situation of shell temperature rise, and checked the battery charging and discharging curve in three situations.
5. battery testing group gas-mixing screening method as claimed in claim 3, is characterized in that,
Nominal voltage is 3.2V, stops the ferric phosphate lithium cell that charging voltage is 3.6V, termination electric discharge pressure is 2.0V,
The capacity of battery in following three kinds of situations is tested respectively with cell service equipment:
When 0.3C, battery is charged to 3.65V, then discharges into 2.5V, calculate the true capacity of battery;
When 0.5C, battery is charged to 3.65V, then discharges into 2.5V, calculate the true capacity of battery;
When 1C, battery is charged to 3.65V, then discharges into 2.5V, calculate the true capacity of battery.
6. battery testing group gas-mixing screening method as claimed in claim 1, is characterized in that,
When carrying out battery group gas-mixing screening process, carry out cell classification according to the battery principle that voltage is consistent, capacity is consistent, outward appearance is consistent in parameter of dispatching from the factory;
The battery of voltage difference in setting numerical value is classified as a class;
Multiple serial battery in one class are formed battery modules, this battery module is once charged and/or detects after discharge, rejecting short slab battery wherein.
7. battery testing group gas-mixing screening method as claimed in claim 6, is characterized in that,
When carrying out battery group gas-mixing screening process, also carry out cell classification according to the battery principle that charging and discharging curve is consistent, internal resistance is consistent, self-discharge rate is consistent in parameter of dispatching from the factory further.
8. battery testing group gas-mixing screening method as claimed in claim 1, is characterized in that,
When carrying out battery maintenance process,
Short slab battery is judged by cell service equipment;
To capacity or voltage and the inconsistent intact battery of whole Battery pack, safeguarded by cell service equipment, make it reach the mean state of whole Battery pack;
To because overcharging or cross the battery put and cause losing efficacy, activated by cell service equipment, make it return to normal technology index;
To there is abnormal battery, by cell service equipment test charging and discharging curve to predict its actual SOH and SOC, and it is made to reach combo requirement by safeguarding and activating.
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Cited By (9)
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| CN106556802A (en) * | 2016-11-01 | 2017-04-05 | 东软集团股份有限公司 | A kind of accumulator battery exception cell recognition methodss and device |
| CN106733717A (en) * | 2016-12-27 | 2017-05-31 | 浙江超威创元实业有限公司 | A kind of method for detecting that soft package lithium battery is damaged |
| CN108061863A (en) * | 2017-12-13 | 2018-05-22 | 宁德时代新能源科技股份有限公司 | Method and device for detecting battery, computer readable storage medium and battery management system |
| CN109444764A (en) * | 2018-03-14 | 2019-03-08 | 刘杰 | A kind of exchange energy type power battery assessment detection method |
| CN110208714A (en) * | 2019-06-24 | 2019-09-06 | 天能电池(芜湖)有限公司 | A kind of mode of the quick factory testing of rechargeable battery |
| CN111580005A (en) * | 2020-05-21 | 2020-08-25 | 中国电力科学研究院有限公司 | Rapid sorting method and device for gradient utilization of power batteries |
| CN112098872A (en) * | 2020-08-13 | 2020-12-18 | 湖南大学 | Method for quickly diagnosing and evaluating power battery |
| CN113857079A (en) * | 2021-08-26 | 2021-12-31 | 合肥国轩高科动力能源有限公司 | Method for testing battery pack after screening of inventory risk batteries |
| CN114649558A (en) * | 2022-03-01 | 2022-06-21 | 瀚瑞动力(厦门)新能源科技有限公司 | Battery cell grouping method for improving grouping rate |
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| CN106556802A (en) * | 2016-11-01 | 2017-04-05 | 东软集团股份有限公司 | A kind of accumulator battery exception cell recognition methodss and device |
| CN106733717A (en) * | 2016-12-27 | 2017-05-31 | 浙江超威创元实业有限公司 | A kind of method for detecting that soft package lithium battery is damaged |
| CN106733717B (en) * | 2016-12-27 | 2019-01-25 | 浙江超威创元实业有限公司 | A method of detection soft package lithium battery is damaged |
| CN108061863A (en) * | 2017-12-13 | 2018-05-22 | 宁德时代新能源科技股份有限公司 | Method and device for detecting battery, computer readable storage medium and battery management system |
| CN109444764A (en) * | 2018-03-14 | 2019-03-08 | 刘杰 | A kind of exchange energy type power battery assessment detection method |
| CN110208714A (en) * | 2019-06-24 | 2019-09-06 | 天能电池(芜湖)有限公司 | A kind of mode of the quick factory testing of rechargeable battery |
| CN111580005A (en) * | 2020-05-21 | 2020-08-25 | 中国电力科学研究院有限公司 | Rapid sorting method and device for gradient utilization of power batteries |
| CN112098872A (en) * | 2020-08-13 | 2020-12-18 | 湖南大学 | Method for quickly diagnosing and evaluating power battery |
| CN112098872B (en) * | 2020-08-13 | 2021-06-22 | 湖南大学 | Method for quickly diagnosing and evaluating power battery |
| CN113857079A (en) * | 2021-08-26 | 2021-12-31 | 合肥国轩高科动力能源有限公司 | Method for testing battery pack after screening of inventory risk batteries |
| CN114649558A (en) * | 2022-03-01 | 2022-06-21 | 瀚瑞动力(厦门)新能源科技有限公司 | Battery cell grouping method for improving grouping rate |
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Effective date of registration: 20151221 Address after: 200002 Nanjing East Road, Shanghai, No. 181, No. Applicant after: State Grid Shanghai Municipal Electric Power Company Applicant after: East China Electric Power Test & Research Institute Co., Ltd. Address before: 200002 Nanjing East Road, Shanghai, No. 181, No. Applicant before: State Grid Shanghai Municipal Electric Power Company |
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