基于析氣現(xiàn)象的鋰電池系統(tǒng)建模

基于析氣現(xiàn)象和熱力學(xué)原理對鋰電池系統(tǒng)在臨界和非臨界情況下的動力學(xué)特性進(jìn)行了較為細(xì)致的研究，建立了以荷電狀態(tài)(S O C ，S tate of C harge) 溫度開路電壓和內(nèi)阻為狀態(tài)變量的系統(tǒng)動力學(xué)模型并應(yīng)用 M atlab/S im ulink 軟件實現(xiàn)了相應(yīng)的動態(tài)仿真 仿真結(jié)果表明，該模型不僅能反映鋰電池在非臨界情況下的動力學(xué)特性，而且在一定程度上還能較為準(zhǔn)確地描述臨界情況的非線性動力學(xué)特性
關(guān)鍵詞：鋰電池建模；析氣現(xiàn)象；熱力學(xué)模型；荷電狀態(tài)；系統(tǒng)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.