燃料电池_蓄电池双能源电动汽车动力系统匹配的研究 硕士学位论文

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燃料电池蓄电池双能源电动汽车动力系统匹配的研究ABSTRACT
Oil deficiency and environment pollution are two crucial and global problems.
Many countries are developing energy saved and environment protection vehicles in
order to resolve those two problems，Electric vehicle fEv)is nOW becoming one of the
developing trends ofthe automotive industry.HoweveB at present，the battery taken by
EV has the disadvantage of big volume，low energy density and long time to charge，
And all these limit the development of EV.In resent years，the proton exchange
membrane fuel cell(PEMFC)with its high conversion efficiency，high energy density，
and no charge is taken On EV；But with the disadvantage of expensive，worse cold
startup performance and shortage power in support.So to research with fuel cell and
battery as power ofEV has very fact significance，and this has been studied in overseas
corporations.For the sake ofexefting its superiority，it is important to match reasonably1 绪论
1.1燃料电池/蓄电池双能源电动汽车概述
当今石油资源的渐趋匮乏、空气质爨的R益恶化和汽车保有量的快速增加俄
褥开发羝捧放、低洼耗豹掰黧车辆成为豢今我国汽车王泣戆紧追任务lI。缝电动汽
车楚当前能满建零舞放”簧求的首逮方案：电动汽车运行中没有摊放污染，如
粜发电厂以核能、水力、太阳能、风能成天然气为自‰源发电，对大气的污染会很
小，面远离城市豹火力发融厂对人们生存环境的影响墩可以控制。谯市区内行驶，
惫动汽车静麓爨效率魄善逶燃涵汽车嘉40%左右；毫凌汽车虿淤翻蠲夜晚嗣电抵
谷时的电网富余电能充电，这可以平衡电网的负载，提高电网能掇的利用率。除
此之外，电动汽车还具有低噪声、低热辎射、易操纵和易维护等优点。因此，人
们对毫动汽莩鸯予辱望。
然而，由于电动汽车静关键技术之-电淹技术髂制约t2-31，电动汽车的性能价
格比远远不能达到推广应用的标准。其主要障碍是：电池的能量密度极低，因此
电池组的质量较大，导致电动汽车-次究电的续驶里程和动力性熊光法达到当静