摘要
随着可再生能源发电技术的发展,作为微电网的能量缓冲环节,储能系统的作用越来越重要。单体电池的不一致性已成为制约电池组应用发展的一个非常关键的问题。在电池管理系统中,荷电状态(SOC)作为衡量电池工作状态的重要指标之一,应能够精准和方便地获得。在定义绝对荷电状态(SOCa)的基础上,对MV18650NTPCA型单体钛酸锂电池进行充放电试验,应用最小二乘法,快速、方便地测定SOC与开路电压(OCV)之间的关系,对SOC的精确估计有较大的借鉴意义和实用价值。
Energy storage system, as a buffer of micro-grid, plays an more and more important role in the generation of renewable energy power. The inconsistency in monomer battery has become one of the key issues, which constrains the de- velopment of the battery pack application. State of charge （SOC） is one of the important indicators of the status of the bat- tery, it should be gotten accurately and conveniently in the battery management system. After the absolute state of charge （SOCa） was defined, the paper described MV18650NTPCA type monomer lithium Titanate battery charging and dischar ging experiments, and the relationship between SOC and the open circuit voltage （OCV）, which was measured by least squares. Least squares is rapid and convenient, and it has great reference significance and practical value for accurate estima- tion of SOC.
出处
《新技术新工艺》
2014年第1期102-105,共4页
New Technology & New Process
