Study about Lithium Batterys Characteristics
To make certain the lithium batterys terminal limited discharge voltage and internal resistance in different load, four 3.2V/60 Ah lithium batteries are put in series to form battery pack in tests. The lithium battery pack terminal voltage, current and overall internal resistance were recorded with the discharge time. By analyze datas from the tests with MATLAB, the lithium battery pack capacity, energy consumed by the load and internal resistance are figured out, lithium battery pack t-U, t-I, t-△U/△t and t-r0 graphs are drawn. From the graphs, we can draw that the limited discharge voltage of a single lithium battery is about 2.75V, the internal resistance of a single lithium battery is about 0.75mΩ, the lithium battery pack current and the voltage change trends are the same when the load keeps changeless, the higher load the less capacity lithium battery pack can release, the energy comsumed by internal resistance to the energy that lithium battery release is higher as the load increase. All the conclutions can do good to develop battery management system.
Ding Zuowu Wang Shulin Zhao Weijun Qu Min Ding Zuowu
Department of Vehicle Engineering,Nanjing Institute of Technology,Nanjing,211167,China Jiangsu Key Laboratory of Advanced Numerical Control Technology,Nanjing Institute of Technology,Nanj
国际会议
长春
英文
639-642
2010-08-24（万方平台首次上网日期，不代表论文的发表时间）