The invention discloses a passive equalization method of a battery in a charging state, and relates to the technical field of software function algorithms of vehicle power batteries. The method comprises the following steps: acquiring data; identifying data; judging data; the program control and data acquisition method comprises the following steps: acquiring monomer voltage, hardware board temperature and lead-acid battery voltage in real time, and judging whether the current battery state can be balanced or not according to the data, and the data identification method comprises the following steps: obtaining the maximum value, the minimum value, the average value and the voltage difference between the highest monomer and the lowest monomer according to the monomer voltage acquired in real time; and carrying out table look-up on the monomer voltage to obtain a balanced SOC value corresponding to each monomer from high to low. According to the invention, the voltage deviation of the single lithium ion batteries or the voltage deviation of the battery pack can be kept in an expected range, so that each single battery is kept in the same state during normal use, and the occurrence of overcharge and overdischarge is avoided.
本发明公开了一种电池在充电状态下的被动均衡方法,涉及车用动力电池软件功能算法技术领域。该方法包括:数据获取;数据识别;数据判断;程序控制,数据获取的方法包括:实时采集单体电压,硬件板温,铅酸电池电压,通过这些数据可以判断当前电池状态是否能进行均衡,数据识别的方法包括:对实时采集到的单体电压得出最大值,最小值,平均值以及最高单体和最低单体的压差,对单体电压进行查表从高到低得出每个单体对应的均衡SOC值。本发明可以让锂离子电池单体电压或电池组电压偏差保持在预期的范围内,从而保证每个单体电池在正常的使用时保持相同状态,以避免过充、过放的发生。
Passive equalization method of battery in charging state
一种电池在充电状态下的被动均衡方法
2023-11-14
Patent
Electronic Resource
Chinese
IPC: | 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 / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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