Comparison of comprehensive properties of Ni-MH (nickel-metal hydride) and Li-ion (lithium-ion) batteries in terms of energy efficiency

被引：81

作者：

Kang, Jianqiang ^{[1
]}

Yan, Fuwu ^{[1
]}

Zhang, Pei ^{[1
]}

Du, Changqing ^{[1
]}

机构：

[1] Wuhan Univ Technol, Sch Automot Engn, Wuhan 430070, Peoples R China

来源：

ENERGY | 2014年 / 70卷

基金：

中国国家自然科学基金;

关键词：

Energy efficiency; Nickel-metal hydride battery; Lithium-ion battery; Quantitative relations; Evaluation; STATE-OF-CHARGE; THERMAL CHARACTERIZATION; ELECTRIC VEHICLES; DIFFUSION; MODEL; MANAGEMENT; ESTIMATOR; PARAMETER; BEHAVIOR;

D O I：

10.1016/j.energy.2014.04.038

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this work, we successfully proposed a method to compare the comprehensive properties of different battery systems in terms of a parameter, energy efficiency. The quantitative relationship of OCV (open circuit voltage) and SOC (state of charge) for Ni-MH batteries is firstly established to calculate the energy efficiency. Then a comprehensive comparison of the energy efficiency for Ni-MH and Li-ion batteries is systemically analyzed under different operating conditions. The results suggest that the energy efficiency is larger for Li-ion batteries than for Ni-MH batteries under charge and charge discharge cycles, but lesser under a large current rate discharge. The outcome indicates that Ni-MH batteries are more favorable in the case of large current rates discharge than Li-ion batteries. Under plus current rates, two factors, SOC and current rates are analyzed with respect to energy efficiency. For both the batteries, the energy efficiency is varied slightly with SOC, but declines greatly with increased current rates. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：618 / 625

页数：8

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