CN106707182B - A kind of power-type sodium-sulphur battery accelerated test method - Google Patents
A kind of power-type sodium-sulphur battery accelerated test method Download PDFInfo
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- CN106707182B CN106707182B CN201611116831.0A CN201611116831A CN106707182B CN 106707182 B CN106707182 B CN 106707182B CN 201611116831 A CN201611116831 A CN 201611116831A CN 106707182 B CN106707182 B CN 106707182B
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- sulphur battery
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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Abstract
The invention discloses a kind of power-type sodium-sulphur battery accelerated test methods, by the electric discharge and charging current that increase sodium-sulphur battery, shorten the time of repose between electric discharge and charging simultaneously to accelerate the test of sodium-sulphur battery, using the increase rate of the ratio of sodium-sulphur battery internal resistance in primary electric discharge and the initial sodium-sulphur battery internal resistance of charging cycle and use process come the service life of prediction power type sodium-sulphur battery, to sodium-sulphur battery monomer, sodium-sulphur battery group or sodium-sulfur battery module, sodium-sulphur battery power station or sodium-sulfur battery energy storage system are all suitable for, it can speed up sodium-sulphur battery test, shorten the sodium-sulphur battery development cycle.
Description
Technical field
The present invention relates to a kind of power-type sodium-sulphur battery accelerated test methods.
Background technique
Sodium-sulphur battery is a kind of large capacity, the high temperature secondary battery of long-life.In sodium-sulphur battery development process, due to it
The characteristics of large capacity, long-life, causes evaluation test excessive cycle.For example, the projected life of sodium-sulphur battery is usually 10~15
Year, evaluation sodium-sulphur battery needs access to 10~15 years in the charge-discharge characteristic of entire life cycle.Obviously, the above sodium-sulphur battery is opened
Test needed for hair process can not be carried out according to true situation, it is therefore desirable to a kind of accelerated test side of sodium-sulphur battery
Method shortens the development cycle of sodium-sulphur battery.
Summary of the invention
The purpose of the invention is to overcome the deficiencies of the prior art and provide a kind of power-type sodium-sulphur battery accelerated test side
Method by increasing the electric discharge and charging current of sodium-sulphur battery, while shortening the time of repose between electric discharge and charging to accelerate sodium
The test of sulphur battery, using sodium-sulphur battery internal resistance in primary electric discharge and the initial sodium-sulphur battery internal resistance of charging cycle and use process
The increase rate of ratio carrys out the service life of prediction power type sodium-sulphur battery, can speed up sodium-sulphur battery test, shortens sodium-sulphur battery and opens
Send out the period.
Realizing a kind of technical solution of above-mentioned purpose is: a kind of power-type sodium-sulphur battery accelerated test method, including following
Step:
S1, using n times of nominal discharge current and charging current carries out multiplying power discharging to power-type sodium-sulphur battery and charging follows
Ring test, time of repose is t hours between electric discharge and charging, wherein 1 < n≤8,0≤t≤2；
After S2, n times of multiplying power dischargings and charging cycle m times, 5≤m≤200, by power-type sodium-sulphur battery with specified charging electricity
Constant-current charge is flowed to blanking voltage, a period of time is stood, by power-type sodium-sulphur battery with nominal discharge current IIt is specifiedConstant-current discharge is extremely
Capacity, which reaches, uses capacity, records the ceiling voltage U of the power-type sodium-sulphur battery voltage in discharge processmax, by UmaxSubstitute into equation
R'=(2.076-Umax)/IIt is specified, the power-type sodium-sulphur battery internal resistance R' in use process is calculated；
Then R' is substituted into equation LP=R0/ R'*100%, wherein R0For initial power type sodium-sulphur battery internal resistance, R' is to make
With power-type sodium-sulphur battery resistance in the process；
S3, by LPSubstitute into equation VP=(100%-LPPrimary electric discharge and charging cycle initial power type sodium is calculated in)/m
The increase rate V of the ratio of power-type sodium-sulphur battery internal resistance in the sulphur internal resistance of cell and use processP, power-type sodium-sulphur battery is pre-
Survey service life L=(100%-K)/VP, wherein 50%≤K≤90%.
A kind of above-mentioned power-type sodium-sulphur battery accelerated test method, in step S2, n times of multiplying power discharging and charging cycle m
After secondary, it is small to stand 0.5~8 by power-type sodium-sulphur battery with specified charging current constant-current charge to blanking voltage for 5≤m≤200
When, power-type sodium-sulphur battery is reached with nominal discharge current constant-current discharge to capacity and uses capacity.
A kind of above-mentioned power-type sodium-sulphur battery accelerated test method, in step S3, K=80%
A kind of power-type sodium-sulphur battery accelerated test method of the invention, by the electric discharge and the charging electricity that increase sodium-sulphur battery
Stream, while shortening the time of repose between electric discharge and charging to accelerate the test of sodium-sulphur battery, it is followed using primary electric discharge and charging
The increase rate of the ratio of sodium-sulphur battery internal resistance carrys out prediction power type sodium sulphur electricity in the initial sodium-sulphur battery internal resistance of ring and use process
The service life in pond stores up sodium-sulphur battery monomer, sodium-sulphur battery group or sodium-sulfur battery module, sodium-sulphur battery power station or sodium-sulphur battery
Energy system is all suitable for, and be can speed up sodium-sulphur battery test, is shortened the sodium-sulphur battery development cycle.
Specific embodiment
The present inventor is in order to preferably understand technical solution of the present invention, below by specifically real
Example is applied to be described in detail:
A certain model power-type sodium-sulfur cell parameter is as follows: using capacity (Q1-Q0) it is 320Ah, specified charging current is
40A, nominal discharge current IIt is specifiedFor 80A, charge cutoff voltage 2.3V, initial internal resistance R0For 1.5m Ω.
A kind of power-type sodium-sulphur battery accelerated test method, including the following steps:
S1, using 2 times of nominal discharges and charging current carries out multiplying power discharging to sodium-sulphur battery and charging cycle is tested, electric discharge
Time of repose is 0 hour between charging；
S2, after 2 times of multiplying power dischargings and charging cycle 100 times, by sodium-sulphur battery with 40A charging current constant-current charge to ending
Voltage 2.3V stands 2 hours, and sodium-sulphur battery is reached with 80A discharge current constant-current discharge to capacity and uses capacity 320Ah, record
The ceiling voltage U of sodium-sulphur battery voltage in discharge processmaxFor 1.955V, by Umax=1.955 substitute into equation R'=(2.076-
Umax)/IIt is specified, the internal resistance R'=1.513m Ω of sodium-sulphur battery is calculated.Then R'=1.513 is substituted into equation LP=R0/R'*
100%, L is acquired after calculatingP=99.14%；
S3, by LP=99.14% substitutes into equation VP=(100%-LP)/m, at the beginning of primary electric discharge and charging cycle is calculated
The increase rate V of the ratio of sodium-sulphur battery internal resistance in beginning sodium-sulphur battery internal resistance and use processP=0.0086%, sodium-sulphur battery is pre-
Survey service life L=(100%-K)/VP=(100%-80%)/0.0086% ≈ 2325 times, K=80%.
A kind of power-type sodium-sulphur battery accelerated test method of the invention, by the electric discharge and the charging electricity that increase sodium-sulphur battery
Stream, while shortening the time of repose between electric discharge and charging to accelerate the test of sodium-sulphur battery, it is followed using primary electric discharge and charging
The increase rate of the ratio of sodium-sulphur battery internal resistance carrys out prediction power type sodium sulphur electricity in the initial sodium-sulphur battery internal resistance of ring and use process
The service life in pond stores up sodium-sulphur battery monomer, sodium-sulphur battery group or sodium-sulfur battery module, sodium-sulphur battery power station or sodium-sulphur battery
Energy system is all suitable for, and be can speed up sodium-sulphur battery test, is shortened the sodium-sulphur battery development cycle.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as the change in spirit of the invention, to embodiment described above
Change, modification will all be fallen within the scope of claims of the present invention.
Claims (2)
1. a kind of power-type sodium-sulphur battery accelerated test method, characterized in that it comprises the following steps:
S1, using n times of nominal discharge current and charging current carries out multiplying power discharging to power-type sodium-sulphur battery and charging cycle is surveyed
Examination, time of repose is t hours between electric discharge and charging, wherein 1 < n≤8,0≤t≤2；
After S2, n times of multiplying power dischargings and charging cycle m times, 5≤m≤200 are permanent with specified charging current by power-type sodium-sulphur battery
Current charge stands 0.5~8 hour, by power-type sodium-sulphur battery with nominal discharge current I to blanking voltageIt is specifiedConstant-current discharge extremely holds
Amount records the ceiling voltage U of the power-type sodium-sulphur battery voltage in discharge process up to capacity is usedmax, by UmaxSubstitute into equation R'
=(2.076-Umax)/IIt is specified, the power-type sodium-sulphur battery internal resistance R' in use process is calculated；
Then R' is substituted into equation LP=R0/ R'*100%, wherein R0For initial power type sodium-sulphur battery internal resistance, R' is to use
Power-type sodium-sulphur battery internal resistance in journey, LPFor the power-type sodium-sulphur battery service life in use process；
S3, by LPSubstitute into equation VP=(100%-LPPrimary electric discharge and charging cycle initial power type sodium sulphur electricity is calculated in)/m
The increase rate V of the ratio of power-type sodium-sulphur battery internal resistance in pond internal resistance and use processP, the power-type sodium-sulphur battery prediction longevity
Order L=(100%-K)/VP, wherein 50%≤K≤90%.
2. a kind of power-type sodium-sulphur battery accelerated test method according to claim 1, which is characterized in that in step S3, K
=80%.
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| CN110007234B (en) * | 2019-03-12 | 2020-02-07 | 清华大学 | Performance test method and system of power battery/battery pack and electric automobile |
| CN110261791B (en) * | 2019-07-22 | 2021-11-30 | 天能电池集团股份有限公司 | Method for rapidly evaluating cycle life of storage battery pack |
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| EP2395595B1 (en) * | 2009-02-06 | 2014-07-23 | NGK Insulators, Ltd. | Method for determining drop in capacity of sodium-sulfur battery |
| CN103091639A (en) * | 2013-01-11 | 2013-05-08 | 中兴通讯股份有限公司 | Battery service life detecting method and detecting device |
| CN103235268A (en) * | 2013-05-06 | 2013-08-07 | 上海卫维自动化科技有限公司 | Device for detecting parameters of sodium-sulfur battery on line |
| CN103837837B (en) * | 2014-03-31 | 2016-03-23 | 国网上海市电力公司 | A kind of sodium-sulphur battery batch detector methods |
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Effective date of registration: 20200901 Address after: 200050 No. 1295 Dingxi Road, Shanghai, Changning District Patentee after: SHANGHAI INSTITUTE OF CERAMICS, CHINESE ACADEMY OF SCIENCES Address before: 201815 Shanghai Jiading District City Jia Zhu Road No. 1997 Patentee before: SHANGHAI ELECTRIC SODIUM SULFUR ENERGY STORAGE TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20211220 Address after: 215400 No.6 Liangfu Road, Taicang City, Suzhou City, Jiangsu Province Patentee after: Jiangsu Institute of advanced inorganic materials Address before: 200050 No. 1295 Dingxi Road, Shanghai, Changning District Patentee before: SHANGHAI INSTITUTE OF CERAMICS, CHINESE ACADEMY OF SCIENCES |
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