基于析气现象的锂电池系统建模

基于析气现象和热力学原理对锂电池系统在临界和非临界情况下的动力学特性进行了较为细致的研究，建立了以荷电状态(S O C ，S tate of C harge) 温度开路电压和内阻为状态变量的系统动力学模型并应用 M atlab/S im ulink 软件实现了相应的动态仿真 仿真结果表明，该模型不仅能反映锂电池在非临界情况下的动力学特性，而且在一定程度上还能较为准确地描述临界情况的非线性动力学特性
关键词：锂电池建模；析气现象；热力学模型；荷电状态；系统仿真
B ased on gassing phenom enon and therm odynam ics, the dynam ic characteristics of a Li-ion battery
system under critical and non-critical situations w ere investigated. A dynam ical m odel of battery system w as
established w ith S O C (S tate of C harge), tem perature, internal resistance and open circuit voltage as the state
variables and the corresponding dynam ic sim ulations w ere carried out by M atlab/S im ulink. T he sim ulated results
show that the m odelis suitable for both non-criticaland criticalsituations of Li-ion battery.