CN104198949A - Battery health state detection method - Google Patents
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- CN104198949A CN104198949A CN201410453821.0A CN201410453821A CN104198949A CN 104198949 A CN104198949 A CN 104198949A CN 201410453821 A CN201410453821 A CN 201410453821A CN 104198949 A CN104198949 A CN 104198949A
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Abstract
The invention relates to a battery health state detection method which includes the steps: firstly, measuring the alternating-current impedance of an unused new battery by the aid of an alternating-current impedance meter to obtain the internal resistance of the new battery; secondly, obtaining a used old end-of-life battery and measuring the alternating-current impedance of the old battery by the aid of the alternating-current impedance meter to obtain the internal resistance of the old battery; thirdly, measuring the alternating-current impedance of a battery to be measured by the aid of the alternating-current impedance meter to obtain the current internal resistance of the battery to be measured; fourthly, calculating the health degree of the battery to be measured according to the internal resistance of the new battery, the internal resistance of the old battery and the current internal resistance of the battery to be measured, and further judging the health state of the battery according to the health degree. An alternating-current impedance testing method is simple, short time is consumed, and online testing can be realized. Besides, change of ohmic resistance represents attenuation of battery capacity, and the ohmic resistance and the battery capacity have a corresponding relationship, so that accuracy of the health state of the battery estimated by the method is high.
Description
Technical field
The present invention relates to battery technology field, particularly a kind of cell health state detection method.
Background technology
After using for a long time or shelving, can there is aging effect in battery, i.e. cell health state variation, and the concrete discharge capacity decay that shows as battery, the internal resistance of battery increases.The current health status of battery is made to correct judgement, thereby can determine that can battery meet service condition requirement, whether can continue to use.In time, accurately the health status of electrolytic cell, can conveniently to battery, make better management.
The cell health state of routine judgement at present (State Of Health, SOH) method is the discharge capacity of measuring under battery current state, according to the ratio of discharge capacity and battery rated capacity, determine the health status of battery, but the measurement of discharge capacity of the cell need to utilize charging/discharging apparatus to discharge to battery, and the method can not realize estimation on line.Except judging cell health state by discharge capacity method, by setting up circulating battery capacity attenuation model, predict in addition the capacity of battery current state, but the actual use procedure of battery is often inconsistent with simulation process, therefore the accuracy of prediction is difficult to guarantee.Research shows that the internal resistance of battery and the health status of battery exist corresponding relation, along with the increase cell health state variation of internal resistance, therefore sets up a kind of cell health state evaluation method based on internal resistance necessary.
Summary of the invention
Technical matters to be solved by this invention be to provide a kind of to be long placed in for a long time the health status of battery and measure simple to operate, can realize estimation on line and the high cell health state detection method of accuracy.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of detection method of cell health state, comprises the following steps:
Step 1: utilize alternating current impedance instrument to measure the AC impedance of the new battery of unused state, obtain the internal resistance of new battery;
Step 2: obtain the used batteries that reach life termination after using, utilize alternating current impedance instrument to measure the AC impedance of described used batteries, obtain the internal resistance of used batteries;
Step 3: utilize alternating current impedance instrument to measure the AC impedance of mesuring battary, obtain the internal resistance of mesuring battary current state;
Step 4: according to the internal resistance of new battery of measuring, the internal resistance of the internal resistance of used batteries and mesuring battary current state, by calculating the health degree of mesuring battary, and then according to the health status of health degree judgement battery.
The invention has the beneficial effects as follows: the present invention utilizes the AC internal Resistance under battery different conditions to calculate the health status of battery, the AC internal Resistance of battery shows as the ohmic internal resistance of battery, ohmic internal resistance is affected by the factors such as battery charge state hardly, thereby can under free position, test, the method of testing of AC internal Resistance is very simple, elapsed time is very short, can realize on-line testing.The variation of ohmic internal resistance has simultaneously represented the decay of battery capacity, and both have corresponding relation, so the health status accuracy of the method estimating battery is higher.
On the basis of technique scheme, the present invention can also do following improvement.
Further, the concrete health degree that adopts following formula to calculate mesuring battary in described step 4:
SOH＝(R2-R)/(R2-R1)*100％；
Wherein, SOH is health degree, the internal resistance that R1 is new battery, and the internal resistance that R2 is used batteries, R is the internal resistance of mesuring battary current state.
Further, the new battery in described step 1 is the battery with mesuring battary same model.
Further, the used batteries in described step 2 are the battery with mesuring battary same model.
Further, the used batteries that reach life termination after using in described step 2 are specially: as this size battery capacity can not be lower than the predetermined percentage of initial capacity, the state that decays to the predetermined percentage of initial capacity when battery capacity is the state of the life termination of battery.
Further, the health degree calculating in described step 4 is directly proportional to cell health state, and when the health degree calculating is less, cell health state is poorer, otherwise when the health degree calculating is larger, cell health state is better.
Accompanying drawing explanation
Fig. 1 is the inventive method flow chart of steps.
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Embodiment 1
A detection method for cell health state, comprises the following steps:
Step 1: utilize alternating current impedance instrument to measure the AC impedance of the new battery of unused state, obtain the internal resistance of new battery;
Step 2: obtain the used batteries that reach life termination after using, utilize alternating current impedance instrument to measure the AC impedance of described used batteries, obtain the internal resistance of used batteries;
Step 3: utilize alternating current impedance instrument to measure the AC impedance of mesuring battary, obtain the internal resistance of mesuring battary current state;
Step 4: according to the internal resistance of new battery of measuring, the internal resistance of the internal resistance of used batteries and mesuring battary current state, by calculating the health degree of mesuring battary, and then according to the health status of health degree judgement battery.
The concrete health degree that adopts following formula to calculate mesuring battary in described step 4:
SOH＝(R2-R)/(R2-R1)*100％；
Wherein, SOH is health degree, the internal resistance that R1 is new battery, and the internal resistance that R2 is used batteries, R is the internal resistance of mesuring battary current state.
New battery in described step 1 is the battery with mesuring battary same model.
Used batteries in described step 2 are the battery with mesuring battary same model.
The used batteries that reach life termination after using in described step 2 are specially: as this size battery capacity can not be lower than the predetermined percentage of initial capacity, the state that decays to the predetermined percentage of initial capacity when battery capacity is the state of the life termination of battery.
The health degree calculating in described step 4 is directly proportional to cell health state, and when the health degree calculating is less, cell health state is poorer, otherwise when the health degree calculating is larger, cell health state is better.
The evaluation method of cell health state of the present invention, utilize AC internal Resistance under battery different conditions to calculate the health status of battery, the AC internal Resistance of battery shows as the ohmic internal resistance of battery, ohmic internal resistance is affected by the factors such as battery charge state hardly, thereby can under free position, test, the method of testing of AC internal Resistance is very simple, and elapsed time is very short, can realize on-line testing.The variation of ohmic internal resistance has simultaneously represented the decay of battery capacity, and both have corresponding relation, so the health status accuracy of the method estimating battery is higher.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a detection method for cell health state, is characterized in that, comprises the following steps:
Step 1: utilize alternating current impedance instrument to measure the AC impedance of the new battery of unused state, obtain the internal resistance of new battery;
Step 2: obtain the used batteries that reach life termination after using, utilize alternating current impedance instrument to measure the AC impedance of described used batteries, obtain the internal resistance of used batteries;
Step 3: utilize alternating current impedance instrument to measure the AC impedance of mesuring battary, obtain the internal resistance of mesuring battary current state;
Step 4: according to the internal resistance of new battery of measuring, the internal resistance of the internal resistance of used batteries and mesuring battary current state, by calculating the health degree of mesuring battary, and then according to the health status of health degree judgement battery.
2. the detection method of cell health state according to claim 1, is characterized in that: the concrete health degree that adopts following formula calculating mesuring battary in described step 4:
SOH＝(R2-R)/(R2-R1)*100％；
Wherein, SOH is health degree, the internal resistance that R1 is new battery, and the internal resistance that R2 is used batteries, R is the internal resistance of mesuring battary current state.
3. the detection method of cell health state according to claim 1 and 2, is characterized in that: the new battery in described step 1 is the battery with mesuring battary same model.
4. the detection method of cell health state according to claim 1 and 2, is characterized in that: the used batteries in described step 2 are the battery with mesuring battary same model.
5. the detection method of cell health state according to claim 1 and 2, it is characterized in that, the used batteries that reach life termination after using in described step 2 are specially: as this size battery capacity can not be lower than the predetermined percentage of initial capacity, the state that decays to the predetermined percentage of initial capacity when battery capacity is the state of the life termination of battery.
6. the detection method of cell health state according to claim 1 and 2, it is characterized in that: the health degree calculating in described step 4 is directly proportional to cell health state, when the health degree calculating less, cell health state is poorer, otherwise, when the health degree calculating is larger, cell health state is better.
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Cited By (18)
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| CN104749530A (en) * | 2015-04-10 | 2015-07-01 | 普天新能源车辆技术有限公司 | Discharging self-dissipation capacity decay estimation method and device of power battery |
| CN104991194A (en) * | 2015-06-25 | 2015-10-21 | 中国电子科技集团公司第十八研究所 | Method for detecting dry-state zinc-silver battery in non-activated state |
| CN105699774A (en) * | 2016-01-30 | 2016-06-22 | 埃斯倍风电科技(青岛)有限公司 | Method for calibrating internal resistance initial value for pitch system battery pack |
| CN106249173A (en) * | 2016-10-10 | 2016-12-21 | 哈尔滨理工大学 | A kind of battery health degree SOH evaluation method |
| CN106707029A (en) * | 2015-11-13 | 2017-05-24 | 北汽福田汽车股份有限公司 | Power cell internal resistance calculation method, and health degree determination method and device |
| CN106970334A (en) * | 2017-05-05 | 2017-07-21 | 安徽锐能科技有限公司 | The method and device of cell health state detection |
| CN107589382A (en) * | 2017-10-25 | 2018-01-16 | 宁夏黑金昊源绿能科技有限公司 | A kind of detection means of battery surplus and health status |
| CN108107372A (en) * | 2017-12-14 | 2018-06-01 | 株洲广锐电气科技有限公司 | Accumulator health status quantization method and system based on the estimation of SOC subregions |
| CN109856558A (en) * | 2019-02-18 | 2019-06-07 | 王国平 | A kind of storage battery health degree detection method and system |
| CN110221223A (en) * | 2019-05-08 | 2019-09-10 | 昆山正金软件科技有限公司 | A kind of estimation on line method of lithium ion battery SOH |
| CN110632528A (en) * | 2019-11-04 | 2019-12-31 | 桂林电子科技大学 | Lithium battery SOH estimation method based on internal resistance detection |
| CN110703119A (en) * | 2018-06-22 | 2020-01-17 | 北京京东尚科信息技术有限公司 | Method and device for evaluating health state of battery |
| CN111983492A (en) * | 2019-05-21 | 2020-11-24 | 彩虹无线（北京）新技术有限公司 | Battery health analysis method, device and equipment |
| CN112698231A (en) * | 2020-11-20 | 2021-04-23 | 深圳供电局有限公司 | Battery health state detection method and device, control equipment and storage medium |
| CN113671398A (en) * | 2021-08-25 | 2021-11-19 | 安徽南瑞继远电网技术有限公司 | Storage battery internal resistance real-time monitoring device and monitoring method thereof |
| CN113848488A (en) * | 2021-09-24 | 2021-12-28 | 上汽通用五菱汽车股份有限公司 | Method and device for measuring and calculating battery charging power attenuation degree and storage medium |
| CN113933733A (en) * | 2021-10-25 | 2022-01-14 | 国网河南省电力公司电力科学研究院 | Lead-acid battery health degree evaluation method |
| CN114200330A (en) * | 2022-02-16 | 2022-03-18 | 广东电网有限责任公司中山供电局 | Method and device for detecting running condition of storage battery pack |
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| CN104749530B (en) * | 2015-04-10 | 2017-08-25 | 普天新能源车辆技术有限公司 | A kind of electrokinetic cell discharges from power consumption Performance Decay evaluation method and device |
| CN104749530A (en) * | 2015-04-10 | 2015-07-01 | 普天新能源车辆技术有限公司 | Discharging self-dissipation capacity decay estimation method and device of power battery |
| CN104991194A (en) * | 2015-06-25 | 2015-10-21 | 中国电子科技集团公司第十八研究所 | Method for detecting dry-state zinc-silver battery in non-activated state |
| CN106707029A (en) * | 2015-11-13 | 2017-05-24 | 北汽福田汽车股份有限公司 | Power cell internal resistance calculation method, and health degree determination method and device |
| CN106707029B (en) * | 2015-11-13 | 2020-10-23 | 北京宝沃汽车股份有限公司 | Method for calculating internal resistance value of power battery and method and device for determining health degree |
| CN105699774B (en) * | 2016-01-30 | 2020-12-08 | 埃斯倍风电科技(青岛)有限公司 | Method for calibrating internal resistance initial value of battery pack of variable pitch system |
| CN105699774A (en) * | 2016-01-30 | 2016-06-22 | 埃斯倍风电科技(青岛)有限公司 | Method for calibrating internal resistance initial value for pitch system battery pack |
| CN106249173A (en) * | 2016-10-10 | 2016-12-21 | 哈尔滨理工大学 | A kind of battery health degree SOH evaluation method |
| CN106970334A (en) * | 2017-05-05 | 2017-07-21 | 安徽锐能科技有限公司 | The method and device of cell health state detection |
| CN106970334B (en) * | 2017-05-05 | 2019-08-13 | 安徽锐能科技有限公司 | The method and device of cell health state detection |
| CN107589382A (en) * | 2017-10-25 | 2018-01-16 | 宁夏黑金昊源绿能科技有限公司 | A kind of detection means of battery surplus and health status |
| CN108107372A (en) * | 2017-12-14 | 2018-06-01 | 株洲广锐电气科技有限公司 | Accumulator health status quantization method and system based on the estimation of SOC subregions |
| CN110703119A (en) * | 2018-06-22 | 2020-01-17 | 北京京东尚科信息技术有限公司 | Method and device for evaluating health state of battery |
| CN109856558A (en) * | 2019-02-18 | 2019-06-07 | 王国平 | A kind of storage battery health degree detection method and system |
| CN110221223A (en) * | 2019-05-08 | 2019-09-10 | 昆山正金软件科技有限公司 | A kind of estimation on line method of lithium ion battery SOH |
| CN111983492A (en) * | 2019-05-21 | 2020-11-24 | 彩虹无线（北京）新技术有限公司 | Battery health analysis method, device and equipment |
| CN110632528A (en) * | 2019-11-04 | 2019-12-31 | 桂林电子科技大学 | Lithium battery SOH estimation method based on internal resistance detection |
| CN110632528B (en) * | 2019-11-04 | 2021-08-31 | 桂林电子科技大学 | Lithium battery SOH estimation method based on internal resistance detection |
| CN112698231A (en) * | 2020-11-20 | 2021-04-23 | 深圳供电局有限公司 | Battery health state detection method and device, control equipment and storage medium |
| CN113671398A (en) * | 2021-08-25 | 2021-11-19 | 安徽南瑞继远电网技术有限公司 | Storage battery internal resistance real-time monitoring device and monitoring method thereof |
| CN113671398B (en) * | 2021-08-25 | 2024-07-09 | 安徽南瑞继远电网技术有限公司 | Storage battery internal resistance real-time monitoring device and monitoring method thereof |
| CN113848488A (en) * | 2021-09-24 | 2021-12-28 | 上汽通用五菱汽车股份有限公司 | Method and device for measuring and calculating battery charging power attenuation degree and storage medium |
| CN113848488B (en) * | 2021-09-24 | 2024-02-13 | 上汽通用五菱汽车股份有限公司 | Method, device and storage medium for measuring and calculating attenuation degree of battery charging power |
| CN113933733A (en) * | 2021-10-25 | 2022-01-14 | 国网河南省电力公司电力科学研究院 | Lead-acid battery health degree evaluation method |
| CN114200330A (en) * | 2022-02-16 | 2022-03-18 | 广东电网有限责任公司中山供电局 | Method and device for detecting running condition of storage battery pack |
| CN114200330B (en) * | 2022-02-16 | 2022-05-03 | 广东电网有限责任公司中山供电局 | Method and device for detecting running condition of storage battery pack |
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Application publication date: 20141210 |