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论述了铅酸蓄电池是目前电动车惟一可实用的电源、胶体电解质的技术进展及提高其容量所采取的措施;介绍了阀控胶体蓄电池在电动车上的应用及其效果.“,”The main points covered in this paper are as follows: lead-aeid battery is the only practical power source for EV for the present; VRLA battery with gelled electrolyte is a kind of power source sultable for EV;the great in improving the capacity and the practiccal effects of gelled electrolyte batteries in application.