CN104035036A - Sealing valve-regulated lead-acid battery cycle life testing method - Google Patents
Sealing valve-regulated lead-acid battery cycle life testing method Download PDFInfo
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Abstract
The invention discloses a sealing valve-regulated lead-acid battery quick cycle life testing method. The method comprises steps: (1) the battery is placed in a water tank; (2) current limiting charging is carried out until the monomer voltage of the battery reaches 2.4 to 2.46V and the maximal current is 0.75 to 1.2C; (3) constant voltage charging is carried out until the current is lower than 0.1A; (4) discharging is carried out until the voltage of the battery reaches the final voltage; and (5) steps from the second to the fourth are repeated until the service life of the battery is terminated, and the cycle number of charging and discharging is counted. The method adopts large-current limiting charging, the total charging time is short, the total charging amount is 102% to 104% the former discharging amount, the overcharge amount is little, and obvious water loss does not happen to the battery.
Description
Technical field
The present invention relates to a kind of Lead-acid Battery Technology field, relate in particular to a kind of formula of sealed valve control fast cycle life of lead-acid accumulator method of testing.
Background technology
Service life cycle is the project that electrokinetic cell must detect, and conventional life detecting method is consuming time long, and people attempt to shorten detection time always, all cannot be well solved so far.
CN102012485A discloses a kind of method of fast detecting cycle life of lead-acid accumulator, comprise the following steps: that first carrying out reality puts capacity check, then need to determine accumulator partial state of charge state charging/discharging voltage, and then carry out that partial state of charge state charging voltage is determined, partial state of charge state sparking voltage is determined.With the charge and discharge voltage U 1 of determining, the working cycle that U2 carries out battery, take current limliting 0.2-2C current charges to magnitude of voltage as U1/ only, with 2-4C multiplying power heavy-current discharge to magnitude of voltage, only reduce to U2/, circulate after some number of times, carry out again capacity check, and institute's measuring electric capacity and actual capacity are compared, measurement capacity is judged battery failure during lower than 80% actual capacity.
CN103257319A discloses a kind of valve-regulated lead-acid battery group life detecting method, comprise the following steps: by after being placed on battery pack on vibration test making machine vibration table and being connected in series, be connected with charge-discharge machine, open charge-discharge machine operation charging procedure: first with current limliting 2A, charge to 57.6V or charge 6 hours, then with current limliting 1.5A, constant voltage 59.2V, charge and within 3 hours, complete charging; Charging finishes rear unlatching vibration test machine, and adjusting its frequency is 18HZ, amplitude 3mm, operation discharge procedures: first with 15～20A constant-current discharge, 5～10S, then with 7～9A constant-current discharge 5 minutes, last 6A was discharged to final voltage 42V and completes electric discharge, closes vibration test machine; Electric discharge then moves charging procedure charging after finishing, and the above-mentioned program that discharges and recharges of repetitive cycling, until discharge capacity is rated capacity 70%, stops detecting, and finally statistics electric discharge total degree, can draw electric battery life-span number of times.
Above two kinds of method of testings are all consuming time longer, and can not truly reflect the service life cycle of electrokinetic cell, thereby for Corporation R & D new product and user, to understand properties of product be all disadvantageous.
Summary of the invention
The invention provides a kind of seal valve control lead-acid battery fast cycle life method of testing, to solve classic method longer problem consuming time.
A sealed valve control formula cycle life of lead-acid accumulator method of testing, comprising:
(1) accumulator is placed in tank;
(2) current-limiting charge reaches 2.4～2.46V to the monomer voltage of accumulator, and maximum current is 0.75C～1.2C;
(3) constant-voltage charge to electric current lower than 0.1A;
(4) voltage that is discharged to accumulator reaches final voltage;
(5) repeating step (2)～(4), to life of storage battery termination, statistics charge and discharge cycles quantity.
Described monomer voltage refers to battery cell voltage, and described final voltage refers to that monomer voltage drops to 1.75V, if be less than 96min continuous three times discharge time, illustrates that the life of storage battery stops.
In test process, control water temperature in tank and, at 23～27 ℃, maintain this temperature, can effectively absorb and spread the heat producing in battery charging process, avoid internal storage battery to come to harm.
The T.T. of described current-limiting charge and constant-voltage charge is 2.5～3.5h.
Described constant-voltage charge accounts for 60～80% of described T.T..
Liquid level has just determined loose heat availability, and the too high water capacity of liquid level easily brushes up against terminal, occurs that electric leakage is dangerous, and preferred, in test process, liquid level, a little more than pole plate height, is controlled tank liquid level conventionally lower than accumulator terminal 15-25mm.
In described tank, place a plurality of accumulators, accumulator spacing is not less than 25mm, reaches the object of efficiently radiates heat.
The size of current of described electric discharge is C/2～C/3.
The present invention carries out current-limiting charge with the large electric current of 0.75C～1.2C, has greatly shortened duration of charging so that whole sense cycle.
Although large current charge can cause accumulator to produce heat, because accumulator is placed in bosh, the heat of the generation water that can be cooled in time absorbs, and internal storage battery can not heat up too high too fast, avoids internal storage battery to damage.In the constant-voltage charge stage, electric current reduces gradually, and the heat producing is less, also can not cause damage to internal storage battery.
The inventive method adopts large current limitation constant-voltage charge, and charging T.T. is shorter, total charge volume be last time discharge capacity 102～104%, cross charge less, can not bring obvious dehydration by accumulators.
Accompanying drawing explanation
Fig. 1 is the accumulator single charge curve map that embodiment 1 model is 6-DZM-12.
Fig. 2 is the accumulator single charge curve map that embodiment 2 models are 6-DZM-20.
Fig. 3 is the accumulator single charge curve map that embodiment 3 models are 6-EVF-40.
Fig. 4 is the accumulator single charge curve map that embodiment 4 models are 6-EVF-45.
Embodiment
The automobile-used 6-DZM-12 of the electrical salf-walking of take (embodiment 1), 6-DZM-20 (embodiment 2), 6-EVF-40 (embodiment 3), 6-EVF-45 (embodiment 4) seal valve control lead-acid battery are example, further introduce the impact of charging method of the present invention on aspects such as the temperature rise of battery, charge efficiency, dehydration and cycle lives.
Embodiment 1
In the environment of 25 ℃, a 6-DZM-12 accumulator is placed in to water-cooling groove, in whole cycle life test process, regularly give water-cooling groove moisturizing, keep liquid level lower than terminal 15mm.
Accumulator is discharged to after final voltage 10.5V with 6A, with the constant voltage 14.8V current limliting 10A 3h that prescribes a time limit, charges a battery, and records accumulator terminal, cover plate, side equitemperature every 1min simultaneously.In cyclic process during front 100 cycle lives, weigh one-shot battery weight every 20 times, in follow-up cyclic process, weigh one-shot battery weight every 50 times, until end-of-life.
It is 13.65Ah that this battery is emitted electric weight for the first time, for the first time in charging process, and current-limiting charge duration 65min, being filled with electric weight is 10.8Ah, after current-limiting charge finishes, starts to enter the constant-voltage charge stage, it is 3.22Ah that the whole constant-voltage charge stage is filled with electric weight.The electric weight that is filled with total in whole charging process is 14.02Ah, for emitting 102.7% of electric weight last time.After current-limiting charge finishes, 29 ℃ of battery cover plate temperature, the temperature of side is 25 ℃, terminal temperature is 30 ℃, water temperature is 23 ℃, and constant-voltage charge starts rear 15min, and battery temperature reaches maximal value, and the temperature of cover plate is 32 ℃, the temperature of side is 28 ℃, and the temperature of terminal is 33 ℃, 25 ℃ of water temperatures.
According to charging method of the present invention, battery is carried out to cycle life, in 1～20 cyclic process, total fluid loss is 3.5g, in 1～100 cyclic process, total fluid loss is 8g, in 1～350 cyclic process, total fluid loss is 19.5g, whole cycle life number of times is 650 times, total fluid loss is 38g, and total time-consuming is 149 days.
After end-of-life, battery has been carried out to dissection and analysis, between single lattice, comparison of coherence is good, obviously there is not falling behind cell, there is slight corrosion in grid, obviously coming off or argillization phenomenon does not appear in active substance yet, belongs to whole Natural Attenuation and causes battery end of life.
Embodiment 2
In the environment of 25 ℃, a 6-DZM-20 accumulator is placed in to water-cooling groove, in whole cycle life test process, regularly give water-cooling groove moisturizing, keep liquid level lower than terminal 15mm.
Accumulator is discharged to after final voltage 10.5V with 10A, with the constant voltage 14.8V current limliting 18A 3h that prescribes a time limit, charges a battery, and records accumulator terminal, cover plate, side equitemperature every 1min simultaneously.In cyclic process during front 100 cycle lives, weigh one-shot battery weight every 20 times, in follow-up cyclic process, weigh one-shot battery weight every 50 times, until end-of-life.
It is 21.63Ah that this battery is emitted electric weight for the first time, for the first time in charging process, and current-limiting charge duration 52min, being filled with electric weight is 15.61Ah, after current-limiting charge finishes, starts to enter the constant-voltage charge stage, it is 6.76Ah that the whole constant-voltage charge stage is filled with electric weight.The electric weight that is filled with total in whole charging process is 22.37Ah, for emitting 103.4% of electric weight last time.After current-limiting charge finishes, 30 ℃ of battery cover plate temperature, the temperature of side is 26 ℃, terminal temperature is 31 ℃, water temperature is 24 ℃, and constant-voltage charge starts rear 18min, and battery temperature reaches maximal value, and the temperature of cover plate is 33.5 ℃, the temperature of side is 30 ℃, and the temperature of terminal is 34 ℃, 25 ℃ of water temperatures.
According to charging method of the present invention, battery is carried out to cycle life, in 1～20 cyclic process, total fluid loss is 6.5g, in 1～100 cyclic process, total fluid loss is 13g, in 1～350 cyclic process, total fluid loss is 36.5g, whole cycle life number of times is 600 times, total fluid loss is 51g, and total time-consuming is 138 days.
After end-of-life, battery has been carried out to dissection and analysis, discovery is to cause battery capacity to decay by falling behind single lattice, and backward single lattice grid corrosion is serious, and active substance also has obvious argillization, and corrosion has also appearred in normal single lattice grid, and active substance has slight argillization phenomenon.
Embodiment 3
In the environment of 25 ℃, a 6-EVF-40 accumulator is placed in to water-cooling groove, in whole cycle life test process, regularly give water-cooling groove moisturizing, keep liquid level lower than terminal 15mm.
Accumulator is discharged to after final voltage 10.5V with 13.3A, with the constant voltage 14.8V current limliting 34A 3.5h that prescribes a time limit, charges a battery, and records accumulator terminal, cover plate, side equitemperature every 1min simultaneously.In cyclic process during front 100 cycle lives, weigh one-shot battery weight every 20 times, in follow-up cyclic process, weigh one-shot battery weight every 50 times, until end-of-life.
It is 41.54Ah that this battery is emitted electric weight for the first time, for the first time in charging process, and current-limiting charge duration 59min, being filled with electric weight is 33.3Ah, after current-limiting charge finishes, starts to enter the constant-voltage charge stage, it is 9.24Ah that the whole constant-voltage charge stage is filled with electric weight.The electric weight that is filled with total in whole charging process is 42.54Ah, for emitting 102.4% of electric weight last time.After current-limiting charge finishes, 28 ℃ of battery cover plate temperature, the temperature of side is 24 ℃, terminal temperature is 30 ℃, water temperature is 24 ℃, and constant-voltage charge starts rear 17min, and battery temperature reaches maximal value, and the temperature of cover plate is 33 ℃, the temperature of side is 27 ℃, and the temperature of terminal is 32 ℃, 26 ℃ of water temperatures.
According to charging method of the present invention, battery is carried out to cycle life, in 1～20 cyclic process, total fluid loss is 12g, in 1～100 cyclic process, total fluid loss is 21g, in 1～350 cyclic process, total fluid loss is 46g, whole cycle life number of times is 550 times, total fluid loss is 64g, and total time-consuming is 160 days.
After end-of-life, battery has been carried out to dissection and analysis, between single lattice, comparison of coherence is good, obviously there is not falling behind cell, there is slight corrosion in grid, but frame muscle and inner rib are all more complete, and argillization has appearred in active substance top, belong to active substance structure along with cyclic process dieback causes battery end of life.
Embodiment 4
In the environment of 25 ℃, a 6-EVF-45 accumulator is placed in to water-cooling groove, in whole cycle life test process, regularly give water-cooling groove moisturizing, keep liquid level lower than terminal 15mm.
Accumulator is discharged to after final voltage 10.5V with 15A, with the constant voltage 14.8V current limliting 38A 3.5h that prescribes a time limit, charges a battery, and records accumulator terminal, cover plate, side equitemperature every 1min simultaneously.In cyclic process during front 100 cycle lives, weigh one-shot battery weight every 20 times, in follow-up cyclic process, weigh one-shot battery weight every 50 times, until end-of-life.
It is 46.5Ah that this battery is emitted electric weight for the first time, for the first time in charging process, and current-limiting charge duration 43min, being filled with electric weight is 27.2Ah, after current-limiting charge finishes, starts to enter the constant-voltage charge stage, it is 20.27Ah that the whole constant-voltage charge stage is filled with electric weight.The electric weight that is filled with total in whole charging process is 47.47Ah, for emitting 102.1% of electric weight last time.After current-limiting charge finishes, 29 ℃ of battery cover plate temperature, the temperature of side is 24 ℃, terminal temperature is 29 ℃, water temperature is 24 ℃, and constant-voltage charge starts rear 16min, and battery temperature reaches maximal value, and the temperature of cover plate is 34 ℃, the temperature of side is 27 ℃, and the temperature of terminal is 32 ℃, 26 ℃ of water temperatures.
According to charging method of the present invention, battery is carried out to cycle life, in 1～20 cyclic process, total fluid loss is 14g, in 1～100 cyclic process, total fluid loss is 25g, in 1～350 cyclic process, total fluid loss is 53g, whole cycle life number of times is 500 times, total fluid loss is 72g, and total time-consuming is 146 days.
After end-of-life, battery has been carried out to dissection and analysis, between single lattice, comparison of coherence is good, obviously there is not falling behind cell, there is slight corrosion in grid, but frame muscle and inner rib are all more complete, and the phenomenon coming off has appearred in active substance, belong to active substance along with cyclic process causes battery end of life with the combination variation of grid.
Claims (8)
1. a sealed valve control formula cycle life of lead-acid accumulator method of testing, comprising:
(1) accumulator is placed in tank;
(2) current-limiting charge reaches 2.4～2.46V to the monomer voltage of accumulator, and maximum current is 0.75C～1.2C;
(3) constant-voltage charge to electric current lower than 0.1A;
(4) voltage that is discharged to accumulator reaches final voltage;
(5) repeating step (2)～(4), to life of storage battery termination, statistics charge and discharge cycles quantity.
2. sealed valve control formula cycle life of lead-acid accumulator method of testing as claimed in claim 1, is characterized in that, in test process, in control tank, water temperature is at 23～27 ℃.
3. sealed valve control formula cycle life of lead-acid accumulator method of testing as claimed in claim 1, is characterized in that, the T.T. of described current-limiting charge and constant-voltage charge is 2.5～3.5h.
4. sealed valve control formula cycle life of lead-acid accumulator method of testing as claimed in claim 3, is characterized in that, described constant-voltage charge accounts for 60～80% of described T.T..
5. sealed valve control formula cycle life of lead-acid accumulator method of testing as claimed in claim 1, is characterized in that, in test process, controls tank liquid level lower than accumulator terminal 15-25mm.
6. sealed valve control formula cycle life of lead-acid accumulator method of testing as claimed in claim 1, is characterized in that, in described tank, place a plurality of accumulators, accumulator spacing is not less than 25mm.
7. sealed valve control formula cycle life of lead-acid accumulator method of testing as claimed in claim 1, is characterized in that, the size of current of described electric discharge is C/2～C/3.
8. sealed valve control formula cycle life of lead-acid accumulator method of testing as claimed in claim 1, is characterized in that, the voltage of described constant-voltage charge is the mono-lattice of 2.4～2.46V/.
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Cited By (11)
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| CN104459561A (en) * | 2015-01-05 | 2015-03-25 | 福州大学 | Method for measuring lead dendrite crystal short-circuiting of superfine glass fiber partition boards of lead-acid storage battery |
| CN104678319A (en) * | 2015-03-11 | 2015-06-03 | 浙江中科立德新材料有限公司 | Method for simulation cycle test of lithium battery |
| CN106093787A (en) * | 2016-07-01 | 2016-11-09 | 天能电池集团有限公司 | A kind of battery of electric bicycle deeper cavity life detecting method |
| CN106099229A (en) * | 2016-08-03 | 2016-11-09 | 湖北润阳新能源有限公司 | Lead-acid storage battery terminal sealing property accelerated test method |
| CN106199445A (en) * | 2016-07-14 | 2016-12-07 | 安徽轰达电源有限公司 | Quickly charging battery cycle life detection method |
| CN106199449A (en) * | 2016-08-03 | 2016-12-07 | 湖北润阳新能源有限公司 | Lead-acid accumulator resistance barrier test method |
| CN106597305A (en) * | 2016-12-09 | 2017-04-26 | 合肥国轩高科动力能源有限公司 | Cycle life prediction method of lithium ion battery |
| CN107703449A (en) * | 2016-08-08 | 2018-02-16 | 深圳市雄韬电源科技股份有限公司 | The quick determination method of service life of lead accumulator |
| CN110416647A (en) * | 2019-06-28 | 2019-11-05 | 国网天津市电力公司电力科学研究院 | It is a kind of to enter network detecting method suitable for distribution terminal lead-acid accumulator |
| CN111190115A (en) * | 2020-01-03 | 2020-05-22 | 天能电池集团股份有限公司 | Method for detecting service life of lead storage battery for automobile |
| CN112462275A (en) * | 2019-09-09 | 2021-03-09 | 河南森源重工有限公司 | Battery pack cycle life testing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104459561B (en) * | 2015-01-05 | 2017-04-12 | 福州大学 | Method for measuring lead dendrite crystal short-circuiting of superfine glass fiber partition boards of lead-acid storage battery |
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| CN104678319A (en) * | 2015-03-11 | 2015-06-03 | 浙江中科立德新材料有限公司 | Method for simulation cycle test of lithium battery |
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| CN106099229B (en) * | 2016-08-03 | 2018-12-07 | 湖北双登润阳新能源有限公司 | Lead-acid storage battery terminal sealing performance accelerated test method |
| CN106199449A (en) * | 2016-08-03 | 2016-12-07 | 湖北润阳新能源有限公司 | Lead-acid accumulator resistance barrier test method |
| CN107703449A (en) * | 2016-08-08 | 2018-02-16 | 深圳市雄韬电源科技股份有限公司 | The quick determination method of service life of lead accumulator |
| CN106597305A (en) * | 2016-12-09 | 2017-04-26 | 合肥国轩高科动力能源有限公司 | Cycle life prediction method of lithium ion battery |
| CN106597305B (en) * | 2016-12-09 | 2019-01-22 | 合肥国轩高科动力能源有限公司 | A kind of Cycle life prediction method of lithium ion battery |
| CN110416647A (en) * | 2019-06-28 | 2019-11-05 | 国网天津市电力公司电力科学研究院 | It is a kind of to enter network detecting method suitable for distribution terminal lead-acid accumulator |
| CN112462275A (en) * | 2019-09-09 | 2021-03-09 | 河南森源重工有限公司 | Battery pack cycle life testing method |
| CN111190115A (en) * | 2020-01-03 | 2020-05-22 | 天能电池集团股份有限公司 | Method for detecting service life of lead storage battery for automobile |
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