CN102355021A - Battery charging and discharging current control method for electric vehicle - Google Patents
Battery charging and discharging current control method for electric vehicle Download PDFInfo
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- CN102355021A CN102355021A CN2011102880074A CN201110288007A CN102355021A CN 102355021 A CN102355021 A CN 102355021A CN 2011102880074 A CN2011102880074 A CN 2011102880074A CN 201110288007 A CN201110288007 A CN 201110288007A CN 102355021 A CN102355021 A CN 102355021A
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Abstract
The invention provides a battery charging and discharging current control method for an electric vehicle. In the invention, the maximum allowable charging and discharging current is not a unified limit value and varies with temperature and the charge state of a battery, so that control parameters of the battery are refined so as to more finely control the charging and discharging current of the battery and realize optimal estimation and management of the maximum allowable charging and discharging current of the battery. The battery charging and discharging current control method provided by the invention has the beneficial effects that the dynamic property of the battery can be fully utilized when the battery is in good condition, over-charge and over-discharge of the battery can be avoided when the battery is in bad condition, and the conflict between the use dynamic property and long service life of the battery can be solved.
Description
Technical field
The present invention relates to the improvement of batteries of electric automobile administrative skill scheme.
Background technology
Electric automobile is the future of auto industry, under the common promotion of government and automobile vendor, has obtained fast development, but the serious restriction of the problem that the battery system dynamic property is not enough, the life-span is short the development of electric automobile.The maximum of battery allows charging and discharging currents to set a limits value now, and in the vehicle use, the actual charging and discharging currents of the battery management system of electric automobile control battery is no more than limits value.But; Because there is very big-difference in battery in the performance of the state-of-charge (SOC) of different temperatures and battery; The maximum charging and discharging currents that allows is when battery status better (state-of-charge interlude and temperature like battery are suitable), and the charging and discharging currents that can bear is bigger; And when battery status is bad (under the discharge of state-of-charge low side, high temperature or the low temperature environment of the high-end charging of the state-of-charge of battery, battery), the charging and discharging currents that battery can bear diminishes.Therefore, the setting of the maximum of battery permission charging and discharging currents is too conservative then can cause the battery power degradation; The too radical battery that then possibly cause occurs overcharging and overdischarge, and finally causes the lost of life of battery.
Summary of the invention
In view of this, the technical problem that the present invention will solve provides a kind of batteries of electric automobile charging and discharging currents control method, and solving the maximum charging and discharging currents that allows of existing batteries of electric automobile is the fixing defective of limit value value.
For addressing the above problem, the present invention adopts following scheme to realize:
A kind of batteries of electric automobile charging and discharging currents control method, this method comprises the steps:
A, be abscissa with the different temperature interval, test is at the state-of-charge of certain battery, maximum charging current and the maximum discharging current that allows of battery of allowing of battery in the different temperatures interval,
B, be ordinate with the state-of-charge interval of different batteries, maximum charging current and the maximum discharging current that allows of battery of allowing of the battery of test in the state-of-charge interval of certain temperature, different batteries,
C, maximum charging current and the maximum discharging current data that allow of battery of allowing of the battery under the state-of-charge interval of each temperature range, battery obtained in last two steps are embedded in the battery management system,
D, battery management system be through detecting the state-of-charge of battery real time temperature, battery, and with above-mentioned data carry out corresponding, the discharge and the charging of control battery, the real-time charging and discharging currents that guarantees battery is within above-mentioned data area.
The maximum of battery allows charging and discharging currents along with the state-of-charge of temperature and battery changes and changes among the present invention; But not unified limits value; Refinement the battery Control Parameter; Thereby more the charging and discharging currents of refined control battery is realized maximum optimization estimation and the management that allows charging and discharging currents of battery.The dynamic property of battery be can make full use of preferably the time at battery status, battery overcharge and overdischarge when battery status is relatively poor, prevented, dynamic property that balancing battery uses and the contradiction between the long-life.
Description of drawings
Fig. 1 is an embodiment of the invention controlled step sketch map.
Embodiment
Below will combine accompanying drawing and embodiment that the present invention is described in further detail for the ease of it will be appreciated by those skilled in the art that:
The batteries of electric automobile charging and discharging currents control method that the embodiment of the invention adopts can be according to the state-of-charge control charging and discharging currents of battery real time temperature and battery; But not the employing one limit of fixed value in the existing method is as the maximum charging and discharging currents value that allows of battery; Can make full use of the dynamic property of battery preferably the time at battery status; When battery status is relatively poor, prevent battery overcharge and overdischarge, dynamic property that balancing battery uses and the relation between the long-life.
In the present embodiment, this control method comprises the steps:
A, be abscissa with the interval Tn～Tn+1 of different temperature, test is at the state-of-charge of certain battery, maximum charging current and the maximum permission of the battery discharging current of allowing of the battery different temperatures interval under,
B, be ordinate with the state-of-charge SOCm～SOCm+1 interval of different batteries, maximum charging current and the maximum permission of the battery discharging current of allowing of the battery of test under the state-of-charge interval of certain temperature, different batteries,
C, maximum charging current and the maximum discharging current data that allow of battery of allowing of the battery under the state-of-charge interval of each temperature range, battery obtained in last two steps are embedded in the battery management system,
Form following three-dimensional table data:
In the form: T is the battery real time temperature; N is a positive integer; SOC is the real-time state-of-charge of battery; M is a positive integer; Ich be the maximum of battery to allow charging current, Idch be that the maximum of battery allows discharging current, Ichn-m is the state-of-charge interval maximum permission charging current down of n temperature range, m battery; Idchn-m is that the maximum under the state-of-charge interval of n temperature range, m battery allows discharging current
D, battery management system are through detecting the state-of-charge SOC of battery real time temperature T, battery; And carry out corresponding with the data in the above table; The maximum of obtaining battery under the current state allows charging and discharging currents; The discharge and the charging of control battery, the real-time charging and discharging currents that guarantees battery is within above-mentioned data area.
Particularly, battery management system through above-mentioned data form obtain real time temperature T, in real time method is following under the state-of-charge SOC:
1. start shooting, and obtain the real time temperature T and the real-time state-of-charge SOC of current battery,
2. each temperature range in real time temperature T and the data form is compared, confirms that this real time temperature T is affiliated down interval,
3. each the state-of-charge interval in real-time state-of-charge SOC and the data form is compared, confirms that this real-time state-of-charge SOC is affiliated down interval,
Confirm that thus the maximum under this real time temperature T and the real-time state-of-charge SOC allows to discharge and recharge electric current.
More than be a wherein concrete implementation of the present invention, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these conspicuous replacement forms all belong to protection scope of the present invention.
Claims (1)
1. a batteries of electric automobile charging and discharging currents control method is characterized in that this method comprises the steps:
A, be abscissa with the different temperature interval, test is at the state-of-charge of certain battery, maximum charging current and the maximum discharging current that allows of battery of allowing of battery in the different temperatures interval,
B, be ordinate with the state-of-charge interval of different batteries, maximum charging current and the maximum discharging current that allows of battery of allowing of the battery of test in the state-of-charge interval of certain temperature, different batteries,
C, maximum charging current and the maximum discharging current data that allow of battery of allowing of the battery under the state-of-charge interval of each temperature range, battery obtained in last two steps are embedded in the battery management system,
D, battery management system be through detecting the state-of-charge of battery real time temperature, battery, and with above-mentioned data carry out corresponding, the discharge and the charging of control battery, the real-time charging and discharging currents that guarantees battery is within above-mentioned data area.
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| CN2011102880074A CN102355021A (en) | 2011-09-26 | 2011-09-26 | Battery charging and discharging current control method for electric vehicle |
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| CN2011102880074A CN102355021A (en) | 2011-09-26 | 2011-09-26 | Battery charging and discharging current control method for electric vehicle |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107572A (en) * | 2012-12-10 | 2013-05-15 | 惠州市亿能电子有限公司 | Power control method of battery management system |
| CN104037898A (en) * | 2014-07-02 | 2014-09-10 | 东南大学 | Self-adapting charging method for vehicle-mounted power battery |
| CN105720634A (en) * | 2016-02-05 | 2016-06-29 | 惠州市蓝微新源技术有限公司 | Self-learning charging power current control method and system |
| CN106026034A (en) * | 2016-06-30 | 2016-10-12 | 联想(北京)有限公司 | Over-current protection method of battery cell and over-current protection circuit of cell of battery |
| CN106469931A (en) * | 2015-08-20 | 2017-03-01 | 三星Sdi株式会社 | Battery system |
| CN108511827A (en) * | 2018-04-03 | 2018-09-07 | 河南顺之航能源科技有限公司 | A kind of low temperature charging/discharging thereof of lithium ion battery |
| CN108572321A (en) * | 2017-03-10 | 2018-09-25 | 郑州宇通客车股份有限公司 | A kind of new-energy automobile and lithium ion battery safe current test method |
| CN109155446A (en) * | 2017-01-24 | 2019-01-04 | 株式会社Lg化学 | Device and method for managing battery |
| CN109541488A (en) * | 2018-11-26 | 2019-03-29 | 瑞浦能源有限公司 | Current control method based on battery load state |
| CN109616712A (en) * | 2019-01-21 | 2019-04-12 | 深圳流量链科技有限公司 | A kind of control method, system and the terminal device of battery charging and discharging electric current |
| CN105633488B (en) * | 2016-02-03 | 2019-06-11 | 惠州市蓝微新源技术有限公司 | A kind of method and system of battery power self adaptive control |
| CN109991547A (en) * | 2019-03-29 | 2019-07-09 | 深圳猛犸电动科技有限公司 | The maximum allowable charging and discharging currents estimation method of lithium ion battery packet and device |
| CN110281811A (en) * | 2019-04-29 | 2019-09-27 | 山东沂星电动汽车有限公司 | A kind of current limiting protecting method and system of the battery of electric car |
| CN110620407A (en) * | 2018-06-19 | 2019-12-27 | 浙江万马新能源有限公司 | Quick-charging grading judgment device and working principle thereof |
| CN113352937A (en) * | 2021-06-02 | 2021-09-07 | 国网智慧能源交通技术创新中心(苏州)有限公司 | Electric automobile charging and discharging control method based on V2G charging system |
| WO2022006694A1 (en) * | 2020-07-06 | 2022-01-13 | Beijing Didi Infinity Technology And Development Co., Ltd. | Systems and methods for adaptively charging a battery system |
| WO2022036831A1 (en) * | 2020-08-18 | 2022-02-24 | 金龙联合汽车工业（苏州）有限公司 | Battery heating strategy optimization method based on battery and charging capacity of charging pile |
| WO2023070321A1 (en) * | 2021-10-26 | 2023-05-04 | 宁德时代新能源科技股份有限公司 | Battery overcurrent detection method, battery management system, and battery |
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Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107572B (en) * | 2012-12-10 | 2015-08-19 | 惠州市亿能电子有限公司 | A kind of Poewr control method of battery management system |
| CN103107572A (en) * | 2012-12-10 | 2013-05-15 | 惠州市亿能电子有限公司 | Power control method of battery management system |
| CN104037898A (en) * | 2014-07-02 | 2014-09-10 | 东南大学 | Self-adapting charging method for vehicle-mounted power battery |
| CN106469931A (en) * | 2015-08-20 | 2017-03-01 | 三星Sdi株式会社 | Battery system |
| CN105633488B (en) * | 2016-02-03 | 2019-06-11 | 惠州市蓝微新源技术有限公司 | A kind of method and system of battery power self adaptive control |
| CN105720634A (en) * | 2016-02-05 | 2016-06-29 | 惠州市蓝微新源技术有限公司 | Self-learning charging power current control method and system |
| CN105720634B (en) * | 2016-02-05 | 2019-04-30 | 惠州市蓝微新源技术有限公司 | A kind of the charge power current control method and system of self study |
| CN106026034A (en) * | 2016-06-30 | 2016-10-12 | 联想(北京)有限公司 | Over-current protection method of battery cell and over-current protection circuit of cell of battery |
| CN106026034B (en) * | 2016-06-30 | 2019-10-29 | 联想(北京)有限公司 | A kind of over-current protection method and circuit of battery battery core |
| US10305310B2 (en) | 2016-06-30 | 2019-05-28 | Lenovo (Beijing) Co., Ltd. | Method and apparatus for controlling battery cell charging-discharging |
| CN109155446B (en) * | 2017-01-24 | 2021-10-19 | 株式会社Lg化学 | Apparatus and method for managing battery |
| US11125825B2 (en) | 2017-01-24 | 2021-09-21 | Lg Chem, Ltd. | Apparatus and method for managing battery |
| CN109155446A (en) * | 2017-01-24 | 2019-01-04 | 株式会社Lg化学 | Device and method for managing battery |
| CN108572321B (en) * | 2017-03-10 | 2020-10-02 | 郑州宇通客车股份有限公司 | New energy automobile and lithium ion battery safety current testing method |
| CN108572321A (en) * | 2017-03-10 | 2018-09-25 | 郑州宇通客车股份有限公司 | A kind of new-energy automobile and lithium ion battery safe current test method |
| CN108511827A (en) * | 2018-04-03 | 2018-09-07 | 河南顺之航能源科技有限公司 | A kind of low temperature charging/discharging thereof of lithium ion battery |
| CN110620407A (en) * | 2018-06-19 | 2019-12-27 | 浙江万马新能源有限公司 | Quick-charging grading judgment device and working principle thereof |
| CN109541488A (en) * | 2018-11-26 | 2019-03-29 | 瑞浦能源有限公司 | Current control method based on battery load state |
| CN109616712A (en) * | 2019-01-21 | 2019-04-12 | 深圳流量链科技有限公司 | A kind of control method, system and the terminal device of battery charging and discharging electric current |
| CN109991547A (en) * | 2019-03-29 | 2019-07-09 | 深圳猛犸电动科技有限公司 | The maximum allowable charging and discharging currents estimation method of lithium ion battery packet and device |
| CN109991547B (en) * | 2019-03-29 | 2021-06-18 | 深圳猛犸电动科技有限公司 | Method and device for estimating maximum allowable charging and discharging current of lithium ion battery pack |
| CN110281811A (en) * | 2019-04-29 | 2019-09-27 | 山东沂星电动汽车有限公司 | A kind of current limiting protecting method and system of the battery of electric car |
| WO2022006694A1 (en) * | 2020-07-06 | 2022-01-13 | Beijing Didi Infinity Technology And Development Co., Ltd. | Systems and methods for adaptively charging a battery system |
| WO2022036831A1 (en) * | 2020-08-18 | 2022-02-24 | 金龙联合汽车工业（苏州）有限公司 | Battery heating strategy optimization method based on battery and charging capacity of charging pile |
| CN113352937A (en) * | 2021-06-02 | 2021-09-07 | 国网智慧能源交通技术创新中心(苏州)有限公司 | Electric automobile charging and discharging control method based on V2G charging system |
| WO2023070321A1 (en) * | 2021-10-26 | 2023-05-04 | 宁德时代新能源科技股份有限公司 | Battery overcurrent detection method, battery management system, and battery |
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Application publication date: 20120215 |