Energy gauge for lead-acid batteries in electric vehicles

被引:79
作者
Caumont, O [1 ]
Le Moigne, P
Rombaut, C
Muneret, X
Lenain, P
机构
[1] Ecole Cent Lille, L2EP, F-59651 Villeneuve Dascq, France
[2] Oldham France SA, F-62033 Arras, France
关键词
batteries; energy conversion; energy measurement; road vehicle electric propulsion;
D O I
10.1109/60.875503
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
This article proposes a new coulometric approach to calculate the state of charge of a lead-acid battery in electric vehicles. The main existing state of charge algorithms have two major defects: a state of charge definition not adapted to electric vehicle applications and the non optimal use of static performance of the accumulator to estimate its state under dynamic stresses. In order to improve these two weaknesses, we propose a new coulometric algorithm linked to the performance of the electric vehicle and where the ampere-hours virtually discharged are obtained by applying statistical equivalence coefficients to the real current profile. The evaluation of this new algorithm on real discharges reveals a significant improvement with less than 5% errors in all cases studied.
引用
收藏
页码:354 / 360
页数:7
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