Online maintenance method for series-connection floating-charge lead-acid storage battery pack

• Main Authors: ZHANG LIXIN, HE YINGMEI, MAO JUN, CHEN SHENGMING, CUI JUNJIE, QIAN LIMING, CHEN QIAOYONG, HE XIAOLIANG, LIN HAO, WANG HAO, ZHONG YUFENG, ZHU XINYU, HU WEI, YANG ZHENGQING, DING DONG, ZHENG YI
• Format: Patent
• Language: Chinese; English
• Published: 02.07.2021
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY

The embodiment of the invention provides an online maintenance method for a series-connection floating-charge lead-acid storage battery pack, and the method comprises the following steps: when the lead-acid storage battery pack is in a floating charge state, selecting a lead-acid storage battery with the maximum deviation from the average floating charge voltage, and calculating the voltage difference between the voltage of the selected lead-acid storage battery and the average floating charge voltage; when a first state in which the voltage difference is greater than a deviation average floating charge voltage set value occurs, recording the duration of the first state; if the duration reaches the floating charge maintenance starting set time, triggering the floating charge maintenance operation of the selected lead-acid storage battery. Through performing deviation correction maintenance on floating charge voltage, namely performing timely supplementary charging maintenance on a battery with relatively low