The invention discloses a battery power limit protection method and system and a storage medium, and relates to the technical field of power battery management, the battery power limit protection method is applied to a whole vehicle, the whole vehicle is provided with a battery management system, and the method comprises the following steps: periodically obtaining current temperature data, a state of charge and a single voltage extreme value of a battery; calculating the current maximum available power according to the temperature data and the charge state; determining a power limit coefficient according to a voltage limit power interval corresponding to the monomer voltage extreme value and the temperature data; according to the maximum available power and the power limiting coefficient, the actual available power allowed by the battery management system to be used by the whole vehicle is obtained. Through the method, the voltage limited power intervals at different temperatures are automatically adapted, the power limiting coefficient is obtained in real time according to the single voltage extreme value and the voltage limited power intervals, the control precision of the actual available power is improved, and then the protection effect on the battery is improved.
本发明公开了一种电池功率限制保护方法、系统及存储介质,涉及动力电池管理技术领域,电池功率限制保护方法应用于整车,整车设有电池管理系统,方法包括:周期获取电池当前的温度数据、荷电状态及单体电压极值;根据温度数据和荷电状态,计算当前的最大可用功率;根据单体电压极值和温度数据对应的电压限功率区间,确定功率限制系数;根据最大可用功率和功率限制系数,得到电池管理系统允许整车使用的实际可用功率。通过该方法,自动适配不同温度下的电压限功率区间,根据单体电压极值和电压限功率区间实时求得功率限制系数,提高了对实际可用功率的控制精度,进而提高了对电池的保护效果。
Battery power limit protection method and system and storage medium
电池功率限制保护方法、系统及存储介质
2022-12-02
Patent
Electronic Resource
Chinese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen |
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