Electrochemical Impedance Spectroscopy Based Power-Mix Control Strategy for Improved Lifetime Performance in Second-Life Battery Systems

被引：0
|
作者：
Lamoureux, C. [1 ]
Gong, Z. [1 ]
Nasr, M. [1 ]
Assadi, S. A. [1 ]
Gupta, K. [2 ]
Galatro, D. [2 ]
Tayyara, O. [2 ]
da Silva, C. [2 ]
Amon, C. [2 ]
Trescases, O. [1 ]
机构：
[1] Univ Toronto, Edward S Rogers Sr Dept Elect & Comp Engn, Toronto, ON, Canada
[2] Univ Toronto, Dept Mech & Ind Engn, Toronto, ON, Canada
来源：
2020 THIRTY-FIFTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2020) | 2020年
基金：
加拿大自然科学与工程研究理事会;
关键词：
CELLS;
D O I：
10.1109/apec39645.2020.9124230
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：
In this paper, a control strategy is described that increases the longevity of degraded Electric Vehicle (EV) batteries used in off-grid stationary-storage applications. The control strategy relies on battery impedance data measured using online Electrochemical Impedance Spectroscopy (EIS) to determine the time-varying degradation rates and electrical models for each battery module. The power-mix between battery modules at different State-of-Health (SOH) is set by the controller to reduce the rate of total capacity fade. A photovoltaic (PV) energy generation curtailing technique is used to reduce the battery charge rates in order to further reduce degradation. In simulation, the control strategy is shown to increase the battery system lifetime by an average of 56%. Experimental validation of the control strategy is performed using two custom 3.85kWh battery modules, and an online EIS system is demonstrated.
引用
收藏
页码：3444 / 3451
页数：8
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