CN102809728B - A kind of life condition strength assessment method - Google Patents
A kind of life condition strength assessment method Download PDFInfo
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- CN102809728B CN102809728B CN201110146609.6A CN201110146609A CN102809728B CN 102809728 B CN102809728 B CN 102809728B CN 201110146609 A CN201110146609 A CN 201110146609A CN 102809728 B CN102809728 B CN 102809728B
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 34
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 9
- 238000007619 statistical method Methods 0.000 claims abstract description 8
- 238000005070 sampling Methods 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 238000002474 experimental method Methods 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910018095 Ni-MH Inorganic materials 0.000 description 2
- 229910018477 Ni—MH Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The present invention proposes a kind of life condition strength assessment method, this method is by calculating the charge-discharge electric power in the whole life experiment state of cyclic operation of battery, the frequency of use of the power of battery is drawn by the battery charging and discharging power of gained, the life condition intensity of battery is drawn using the charge-discharge electric power proportion in whole life test operating mode.Life condition strength assessment method proposed by the present invention is made up of three below part：1st, battery life test cycle operating mode is determined；2nd, the electric current and voltage in sampling battery charge and discharge process, calculate the charge-discharge electric power of battery；3rd, the frequency of use histogram of battery charging and discharging power is drawn using statistical method, battery life operating mode intensity is drawn using the charge-discharge electric power proportion in histogram.
Description
Technical field
This patent belongs to the cell system field of new-energy automobile, more particularly to a kind of battery life operating mode strength assessment side
Method.
Background technology
Energy shortage and environmental pollution are the great difficult problems that the whole world faces, and it is to alleviate the problem to make full use of clean energy resource
Effective way.Developing energy-saving and environmental protection automobile, important directions and automobile industry as World Auto Industry technological innovation can
The inevitable choice of sustainable development.Battery system complexity is big compared with high, design difficulty, is always to restrict the technology to New energy electric
The bottleneck of automobile popularization and application.
The electrokinetic cell type on new-energy automobile is applied to have at present：Lead-acid accumulator, Ni-MH battery, nickel-cadmium cell and
Lithium battery.Lithium battery is because with small volume, energy density height, storage life length, memory-less effect, high voltage and self-discharge rate
Low premium properties, by substitution lead-acid battery, Ni-MH battery, the winner as electrokinetic cell.
Battery is a complicated electro-chemical systems, and its deterioration failure complicated mechanism, deterioration mode is influenceed by factors,
It is difficult to be reflected with general model.Issue for battery life is one of the problem of battery is the most key, and it is current system that the life-span, which is not grown,
The about wide variety of principal element of electrokinetic cell.The research of battery life, the development to battery industry is critically important.The charge and discharge of battery
The change of electrical power situation and battery life has close relationship, therefore utilizes the charge-discharge electric power situation of battery to battery
Life condition intensity, which is estimated, seems very meaningful.
In order to the simple life condition intensity for accurately assessing battery, this patent just utilizes the charge-discharge electric power of battery
Situation proposes a kind of life condition strength assessment method.
In existing patent, also once there is the associated description predicted life condition strength assessment, such as practical New Name
For battery life evaluation device for hybrid vehicle (patent No. 200780005092), on battery life evaluation portion in the patent
Point, measured natural fuel mileage is compared with the test fuel mileage data described in certain driving model, root
The degradation of the battery is assessed according to the drop-out value of the fuel mileage of each degradation setting of battery, and battery is bad
The information transmission of change is to battery life display portion.
The and for example life determining method and the life determining apparatus (patent No. of the entitled nickel-hydrogen accumulator of patent of invention
200580005332), the patent prepares the value and the storage for the load electric power for representing to be applied to during electric discharge on battery in advance
The data of the relation between the life-span of the environment temperature in place and the battery are set in battery, then, determine battery and put
Load electric power and environment temperature when electric, select the life-span corresponding with these measured values as life expectancy from the data
Value.1st service life reduction amount is calculated according to the natural logrithm function using discharge time as parameter, by the life expectancy value and institute
The difference of the 1st service life reduction amount is stated as remaining life value, the life-span of nickel-hydrogen accumulator is judged.
Compared with existing patent, a kind of life condition strength assessment method described in this patent is electric only by calculating
Charge-discharge electric power in the whole life experiment state of cyclic operation in pond can be predicted to battery life operating mode intensity.And above-mentioned mixing
Estimated in the patent of power car battery life evaluation device using fuel mileage data, obtain and relatively bother.On
State in the life determining method of nickel-hydrogen accumulator and the patent of life determining apparatus, it is necessary to prepare environment temperature and battery in advance
The data of relation between life-span, the difficulty that these relation datas are obtained is larger, and the de-stabilising effect factor being subject to is relatively more.And
This patent is by simply accurately utilizing the charge-discharge electric power proportion in whole life test operating mode can be to battery life
Operating mode intensity is estimated.
The content of the invention
The present invention is for existing research situation there is provided a kind of by calculating filling in the whole life test operating mode of battery
Discharge power simultaneously draws power frequency of use histogram with statistical method, you can easily battery life operating mode intensity is commented
Estimate.
A kind of life condition strength assessment method that this patent is proposed is made up of three below part：1st, battery life is determined
Test cycle operating mode；2nd, the electric current and voltage in sampling battery charge and discharge process, calculate the charge-discharge electric power of battery；3rd, utilize
Statistical method draws the frequency of use histogram of battery charging and discharging power, is obtained using the charge-discharge electric power proportion in histogram
Go out battery life operating mode intensity.
Described determination battery life test cycle operating mode is adjusted by the Shi Jishiyong operating mode of battery and process of the test
After whole, objectively the life condition of description battery, finally determines suitable battery life test cycle operating mode；
Electric current and voltage in described sampling battery charge and discharge process, calculate the charge-discharge electric power of battery, are to pass through
The life test operating mode of determination carries out discharge and recharge to battery, according to sampling time T, gathers the electric current in battery life process of the test
I and voltage U, so as to calculate the charge-discharge electric power P=U*I of battery；；
Charge-discharge electric power proportion in described utilization histogram draws battery life operating mode intensity, is by calculating
Whole life test operating mode in charge-discharge electric power data make histogram using statistical method, abscissa is big for the interval of power
Small, ordinate is the duration in this power bracket, using in the whole life test operating mode of battery in this frequency histogram
Charge-discharge electric power proportion judge battery life operating mode intensity.
Brief description of the drawings
Fig. 1 is a kind of life condition strength assessment method overall flow figure that this patent is proposed
Embodiment
A kind of life condition strength assessment method proposed by the present invention is made up of three below part：1st, battery life is determined
Test cycle operating mode；2nd, the electric current and voltage in sampling battery charge and discharge process, calculate the charge-discharge electric power of battery；3rd, utilize
Statistical method draws the frequency of use histogram of battery charging and discharging power, is obtained using the charge-discharge electric power proportion in histogram
Go out battery life operating mode intensity.
A kind of life condition strength assessment method is described further below in conjunction with accompanying drawing.
Determination battery life test cycle operating mode in a kind of life condition strength assessment method overall flow figures of Fig. 1, is needed
The actual state to be used by battery determines battery life operating mode.Due to the electricity obtained with the working cycles of conventional constant current charge-discharge
Pond lifetime data, higher than the service life of battery real work, and presses the working condition tests of battery under actual service conditions completely, will
Spend the long time.Therefore operating condition of test requirement should be using the actual use operating mode of battery to input, binding tests process again
It is adjusted, finally determines suitable battery life test cycle operating mode；
The charge-discharge electric power for calculating battery in a kind of life condition strength assessment method overall flow figures of Fig. 1, first
Discharge and recharge is carried out to battery by the life test operating mode determined, according to the sampling time T of determination, battery life process of the test is gathered
In electric current I and voltage U, so as to calculate the charge-discharge electric power P=U*I of battery；.
In a kind of life condition strength assessment method overall flow figures of Fig. 1 battery life work is carried out using frequency histogram
Condition strength assessment, refers to make Nogata using statistical method by the charge-discharge electric power data in the whole life test operating mode calculated
Figure, abscissa is the interval size of power, and ordinate is the duration in this power bracket, is filled so as to obtain battery
The frequency of use histogram of discharge power, utilizes the charge-discharge electric power in the whole life test operating mode of battery in this frequency histogram
Proportion judges battery life operating mode intensity.
Claims (1)
1. a kind of life condition strength assessment method, it is characterised in that this method is circulated by calculating the whole life test of battery
Charge-discharge electric power in operating mode, the frequency of use of the power of battery is drawn by the battery charging and discharging power utilization statistical method of gained,
The life condition intensity of battery, the side are judged using the charge-discharge electric power proportion in whole life test state of cyclic operation
The step of method, is as follows：
The actual state that step (1) is first used by battery determines life test state of cyclic operation, and the requirement of life test state of cyclic operation will
The life condition of objective description battery, should be using the Shi Jishiyong operating mode of battery as input, and binding tests process is adjusted again,
Finally determine suitable battery life test cycle operating mode；
Step (2) carries out discharge and recharge by the life test state of cyclic operation determined to battery, according to sampling time T, gathers the battery longevity
The electric current I and voltage U in process of the test are ordered, the charge-discharge electric power P=U*I of battery is calculated；
Step (3) makees straight by the charge-discharge electric power data in the whole life test state of cyclic operation calculated using statistical method again
Fang Tu, abscissa is the interval size of power, and ordinate is the duration in this power bracket, so as to obtain battery charge and discharge
The frequency of use histogram of electrical power；
Step (4) finally, obtains the frequency of use histogram of charge-discharge electric power under the whole life test state of cyclic operation of battery, then leads to
The charge-discharge electric power proportion for calculating and obtaining in the whole life test state of cyclic operation of battery is crossed, realizes and quantifies to refer in the short time
Mark, assesses battery life operating mode intensity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110146609.6A CN102809728B (en) | 2011-06-01 | 2011-06-01 | A kind of life condition strength assessment method |
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| CN201110146609.6A CN102809728B (en) | 2011-06-01 | 2011-06-01 | A kind of life condition strength assessment method |
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| CN102809728B true CN102809728B (en) | 2017-09-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103616643B (en) * | 2013-11-15 | 2016-02-10 | 清华大学 | Analyze the data processing method of battery operation operating mode |
| 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 |
| CN111044927B (en) * | 2019-12-25 | 2021-11-23 | 中国第一汽车股份有限公司 | Power battery service life evaluation method and system |
| CN114924202A (en) * | 2022-05-19 | 2022-08-19 | 上海捷氢科技股份有限公司 | Method and device for detecting service life of fuel cell |
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| KR100471233B1 (en) * | 2002-06-26 | 2005-03-10 | 현대자동차주식회사 | Method of generating maximum charge current and maximum discharge current for battery in a hybrid electric vehicle |
| CN101067644B (en) * | 2007-04-20 | 2010-05-26 | 杭州高特电子设备有限公司 | Storage battery performance analytical expert diagnosing method |
| KR100936158B1 (en) * | 2007-09-28 | 2010-01-12 | 한국전력공사 | Automated battery charge / discharge test of power equipment |
| CN101398469A (en) * | 2008-09-28 | 2009-04-01 | 广州丰江电池新技术有限公司 | Method for assessing service life and security of lithium secondary battery |
| CN101458310A (en) * | 2008-12-23 | 2009-06-17 | 天津力神电池股份有限公司 | Battery consistency evaluating method |
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