CN103105587A - Calculation method of battery pack actual capacity - Google Patents
Calculation method of battery pack actual capacity Download PDFInfo
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- CN103105587A CN103105587A CN2012105390758A CN201210539075A CN103105587A CN 103105587 A CN103105587 A CN 103105587A CN 2012105390758 A CN2012105390758 A CN 2012105390758A CN 201210539075 A CN201210539075 A CN 201210539075A CN 103105587 A CN103105587 A CN 103105587A
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Abstract
The invention discloses a calculation method of a battery pack actual capacity. The calculation method includes the following steps: (1) acquiring the value of the stress optical coefficient (SOC) SOC1 as an initial value when the battery pack just enters a working state. (2) acquiring the value of the stress optical coefficient (SOC) SOC2 as an end value when the battery pack stops working for a long time or enters the working state for the second time.(3) calculating the discharge capacity delta Qin the time quantum between SOC1and SOC 2. (4) calculating the actual capacity of the battery pack= delta Q/ (SOC1-SOC2). If delta Q is less than a preset threshold value, then the currently detected data is deleted and the detection is carried out again. The preset threshold value is regulated according to the size of the different battery pack capacity. The calculation method of the battery pack actual capacity has the advantages that the calculation is simple; the realization of the calculation is simple, the actual capacity of the battery pack can be exactly calculated. The initial value and the end value of the calculation all chooses the value of the battery pack after standing so that the calculation can be exact and the calculation value is more close to the true value.
Description
Technical field
The present invention relates to a kind of computing method of electric battery actual capacity.
Background technology
At present a lot of electric automobiles look forward to requiring battery management system to increase the SOH(cell health state) function, purpose is to weigh health and fitness information and the life situations of battery for the ease of the driver.And the basis of SOH estimation is exactly can accurately calculate this actual capacity of electric battery constantly by the instruction demand, according to the actual capacity of electric battery, table look-up can this moment battery system the SOH value.Embedded electric battery actual capacity and the corresponding bivariate table of SOH value in battery management system, this table is provided by battery production producer.The actual capacity that needs obviously to calculate electric battery just can be completed the estimation of SOH value.There is no effectively to calculate the method for electric battery actual capacity in current battery management system control strategy, cause the more difficult realization of SOH estimation of battery.
Summary of the invention
In order to solve the deficiency that exists in existing battery SOH estimation, the invention provides a kind of design proposal of computing method of electric battery actual capacity.
A kind of computing method of electric battery actual capacity comprise the following steps:
(1) obtain the value SOC1 of electric battery SOC when just entering duty as initial value.
(2) obtain electric battery quit work charge after a period of time or when entering duty for the second time the value SOC2 of SOC as end value.
(3) calculate the discharge electricity amount Δ Q of electric battery in the time period of detecting between SOC1 and SOC2.
(4) actual capacity of calculating electric battery=Δ Q/ (SOC1-SOC2).
Preferably, if Δ Q gives up less than default threshold value the data that current detection arrives, and re-start detection.
Concrete, the size of described default threshold value is regulated according to different battery capacity sizes.
In sum, the present invention calculates more simply, more easily realizes, can calculate accurately the actual capacity of electric battery.The initial value that calculates and end value are all chosen the value of electric battery after standing, can make calculating more accurate, and calculated value is more near actual value.
Description of drawings
Fig. 1 is the implementation step schematic diagram of the computing method of electric battery actual capacity of the present invention.
Embodiment
In order to allow those skilled in the art can understand better technical scheme of the present invention, the invention will be further elaborated below in conjunction with accompanying drawing.
As shown in Figure 1, the present invention has disclosed a kind of computing method of electric battery actual capacity.At first, obtain the value SOC1 of electric battery SOC when just entering duty as initial value, and obtain electric battery quit work a period of time charge after (being generally a few hours) or when entering duty for the second time the value SOC2 of SOC as end value, then calculate and detect the discharge electricity amount Δ Q of electric battery in the time period between SOC1 and two states of SOC2.
By the computing formula according to SOC: SOC=electric battery dump energy/electric battery actual capacity can get:
SOC1-SOC2=battery dump energy Q1/ battery actual capacity-battery dump energy Q2/ battery actual capacity, that is:
SOC1-SOC2=Δ Q/ battery actual capacity;
Can get thus:
The actual capacity of electric battery=Δ Q/ (SOC1-SOC2).
The electric battery actual capacity refers to the max cap. that electric battery can be charged at present, is an actual value weighing the electric battery health status, changes not quite within a certain period, can be similar to and think equal.Therefore the discharge electricity amount Δ Q of electric battery within the time period of detecting between SOC initial value and end value must be greater than certain threshold value, the value that only meets such condition, just can calculate, the value that calculates the electric battery actual capacity is thought the value of this section electric battery in period, otherwise give up the data that current detection arrives, and carry out again detection, until there is next time a qualified class value to occur, just can carry out the calculating of electric battery actual capacity.
Because the capacity of various electric battery is different, so be used for also needing and regulating as the size of the threshold value of Δ Q reference, this threshold value can be obtained by the test of reality.
The present embodiment is more excellent embodiment of the present invention; need to prove; in the situation that do not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make according to the present invention various corresponding changes and distortion, but these changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (3)
1. the computing method of an electric battery actual capacity, is characterized in that, comprises the following steps:
(1) obtain the value SOC1 of electric battery SOC when just entering duty as initial value;
(2) obtain electric battery quit work charge after a period of time or when entering duty for the second time the value SOC2 of SOC as end value;
(3) calculate the discharge electricity amount Δ Q of electric battery in the time period of detecting between SOC1 and SOC2;
(4) actual capacity of calculating electric battery=Δ Q/ (SOC1-SOC2).
2. the computing method of electric battery actual capacity according to claim 1, is characterized in that: if Δ Q gives up less than default threshold value the data that current detection arrives, and re-start detection.
3. the computing method of electric battery actual capacity according to claim 1 is characterized in that: the size of described default threshold value is regulated according to different battery capacity sizes.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728563A (en) * | 2013-12-17 | 2014-04-16 | 惠州市亿能电子有限公司 | Method for measuring and calculating health status of batteries |
| CN104569837A (en) * | 2014-12-22 | 2015-04-29 | 惠州市亿能电子有限公司 | Self-learning method for battery capacity of electric automobile |
| CN104597404A (en) * | 2014-12-19 | 2015-05-06 | 深圳市科陆电子科技股份有限公司 | Automatic marking method of actual battery capacity, SOC (state of charge) and SOH (state of health) |
| CN104730462A (en) * | 2013-12-19 | 2015-06-24 | 北汽福田汽车股份有限公司 | Battery pack capacity online detecting method |
| CN106133540A (en) * | 2014-03-07 | 2016-11-16 | 雷诺两合公司 | The method including the state of charge of the battery of multiple battery unit with variable state of charge range for assessment |
| CN106353684A (en) * | 2016-08-11 | 2017-01-25 | 华霆（合肥）动力技术有限公司 | Battery failure detection method and apparatus |
| CN106849232A (en) * | 2017-01-22 | 2017-06-13 | 东莞博力威电池有限公司 | It is a kind of to realize the method and system that electric motor car polylith battery pack automatically switches |
| CN103942133B (en) * | 2014-03-20 | 2017-06-27 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
| CN107632268A (en) * | 2017-09-20 | 2018-01-26 | 广东电网有限责任公司电力科学研究院 | A kind of lithium ion battery energy storage system state-of-charge online calibration method and device |
| CN109927584A (en) * | 2019-03-15 | 2019-06-25 | 恒大智慧充电科技有限公司 | Battery of electric vehicle management method, computer equipment and storage medium |
| CN110954833A (en) * | 2018-09-25 | 2020-04-03 | 比亚迪股份有限公司 | Method and device for acquiring battery capacity and vehicle |
| CN111505515A (en) * | 2020-03-20 | 2020-08-07 | 福建时代星云科技有限公司 | SOC precision detection method and system for electric vehicle |
| CN112757962A (en) * | 2021-01-07 | 2021-05-07 | 天津易鼎丰动力科技有限公司 | Method for calibrating available capacity of battery by BMS |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251582A (en) * | 2007-02-20 | 2008-08-27 | 德尔菲技术公司 | Method of determining the energy capacity of a battery |
| CN101303397A (en) * | 2008-06-25 | 2008-11-12 | 河北工业大学 | Method and apparatus for computing lithium ion batteries residual electric energy |
| CN101430366A (en) * | 2008-12-12 | 2009-05-13 | 苏州金百合电子科技有限公司 | Battery charge state detection method |
| CN101526587A (en) * | 2009-03-20 | 2009-09-09 | 惠州市亿能电子有限公司 | Measuring method for state of charge of series-connected batteries |
| JP2009300362A (en) * | 2008-06-17 | 2009-12-24 | Panasonic Corp | Soc calculation circuit, charge system, and soc calculation method |
| CN101706556A (en) * | 2009-11-11 | 2010-05-12 | 惠州市亿能电子有限公司 | Actual capacity estimation method of lithium ion battery for pure electric automobile |
| CN101819259A (en) * | 2010-05-06 | 2010-09-01 | 惠州市亿能电子有限公司 | Method for evaluating consistency of battery pack |
| CN102077105A (en) * | 2008-06-27 | 2011-05-25 | 通用汽车环球科技运作公司 | Method for battery capacity estimation |
| CN102445663A (en) * | 2011-09-28 | 2012-05-09 | 哈尔滨工业大学 | Method for estimating battery health of electric automobile |
| CN102645636A (en) * | 2012-04-19 | 2012-08-22 | 北京优科利尔能源设备有限公司 | Battery capacity detection method |
-
2012
- 2012-12-14 CN CN2012105390758A patent/CN103105587A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251582A (en) * | 2007-02-20 | 2008-08-27 | 德尔菲技术公司 | Method of determining the energy capacity of a battery |
| JP2009300362A (en) * | 2008-06-17 | 2009-12-24 | Panasonic Corp | Soc calculation circuit, charge system, and soc calculation method |
| CN101303397A (en) * | 2008-06-25 | 2008-11-12 | 河北工业大学 | Method and apparatus for computing lithium ion batteries residual electric energy |
| CN102077105A (en) * | 2008-06-27 | 2011-05-25 | 通用汽车环球科技运作公司 | Method for battery capacity estimation |
| CN101430366A (en) * | 2008-12-12 | 2009-05-13 | 苏州金百合电子科技有限公司 | Battery charge state detection method |
| CN101526587A (en) * | 2009-03-20 | 2009-09-09 | 惠州市亿能电子有限公司 | Measuring method for state of charge of series-connected batteries |
| CN101706556A (en) * | 2009-11-11 | 2010-05-12 | 惠州市亿能电子有限公司 | Actual capacity estimation method of lithium ion battery for pure electric automobile |
| CN101819259A (en) * | 2010-05-06 | 2010-09-01 | 惠州市亿能电子有限公司 | Method for evaluating consistency of battery pack |
| CN102445663A (en) * | 2011-09-28 | 2012-05-09 | 哈尔滨工业大学 | Method for estimating battery health of electric automobile |
| CN102645636A (en) * | 2012-04-19 | 2012-08-22 | 北京优科利尔能源设备有限公司 | Battery capacity detection method |
Non-Patent Citations (2)
| Title |
|---|
| 文锋 等: "串联电池组充电模式研究", 《高技术通讯》 * |
| 温家鹏 等: "Kalman算法在纯电动汽车SOC估算中的应用误差分析", 《汽车工程》 * |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728563B (en) * | 2013-12-17 | 2016-08-17 | 惠州市亿能电子有限公司 | A kind of measuring method of cell health state |
| CN103728563A (en) * | 2013-12-17 | 2014-04-16 | 惠州市亿能电子有限公司 | Method for measuring and calculating health status of batteries |
| CN104730462A (en) * | 2013-12-19 | 2015-06-24 | 北汽福田汽车股份有限公司 | Battery pack capacity online detecting method |
| CN106133540A (en) * | 2014-03-07 | 2016-11-16 | 雷诺两合公司 | The method including the state of charge of the battery of multiple battery unit with variable state of charge range for assessment |
| CN103942133B (en) * | 2014-03-20 | 2017-06-27 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
| CN104597404A (en) * | 2014-12-19 | 2015-05-06 | 深圳市科陆电子科技股份有限公司 | Automatic marking method of actual battery capacity, SOC (state of charge) and SOH (state of health) |
| CN104569837A (en) * | 2014-12-22 | 2015-04-29 | 惠州市亿能电子有限公司 | Self-learning method for battery capacity of electric automobile |
| CN104569837B (en) * | 2014-12-22 | 2017-10-27 | 惠州市亿能电子有限公司 | A kind of batteries of electric automobile capacity self-learning method |
| CN106353684A (en) * | 2016-08-11 | 2017-01-25 | 华霆（合肥）动力技术有限公司 | Battery failure detection method and apparatus |
| CN106849232A (en) * | 2017-01-22 | 2017-06-13 | 东莞博力威电池有限公司 | It is a kind of to realize the method and system that electric motor car polylith battery pack automatically switches |
| CN106849232B (en) * | 2017-01-22 | 2024-02-20 | 广东博力威科技股份有限公司 | Method and system for realizing automatic switching of multiple battery packs of electric vehicle |
| CN107632268A (en) * | 2017-09-20 | 2018-01-26 | 广东电网有限责任公司电力科学研究院 | A kind of lithium ion battery energy storage system state-of-charge online calibration method and device |
| CN110954833A (en) * | 2018-09-25 | 2020-04-03 | 比亚迪股份有限公司 | Method and device for acquiring battery capacity and vehicle |
| CN110954833B (en) * | 2018-09-25 | 2022-03-18 | 比亚迪股份有限公司 | Method and device for acquiring battery capacity and vehicle |
| CN109927584A (en) * | 2019-03-15 | 2019-06-25 | 恒大智慧充电科技有限公司 | Battery of electric vehicle management method, computer equipment and storage medium |
| CN111505515A (en) * | 2020-03-20 | 2020-08-07 | 福建时代星云科技有限公司 | SOC precision detection method and system for electric vehicle |
| CN112757962A (en) * | 2021-01-07 | 2021-05-07 | 天津易鼎丰动力科技有限公司 | Method for calibrating available capacity of battery by BMS |
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Application publication date: 20130515 |