Development of Enhancing Battery Management for Reusing Automotive Lithium-Ion Battery

Wen-Poo Yuan, Se-Min Jeong, Wu-Yang Sean and Yi-Hsien Chiang
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Wen-Poo Yuan: Wistron Corporation, Hsichih 22181, Taiwan
Se-Min Jeong: Department of Naval Architecture and Ocean Engineering, Chosun university, Gwangju 61452, Korea
Wu-Yang Sean: Center for Environmental Risk Management, Chung Yuan Christian University, ChungLi 32023, Taiwan
Yi-Hsien Chiang: Vigourpack Co., Ltd., Taichung 408, Taiwan

Energies, 2020, vol. 13, issue 13, 1-15

Abstract: In this study, a battery management system (BMS) is developed for reused lithium-ion battery (RLIB). Additional enhancing functions of battery management are established, i.e., estimation of life-sensitized parameters and life extension. Life-sensitizing parameters mainly include open-circuit voltage (OCV) and internal resistances (IRs). They are sensitized parameters individually relative to state of charge (SOC) and state of health (SOH). For estimating these two parameters, an adaptive control scheme is implemented in BMS. This online adaptive control approach has been extensively applied to nonlinear systems with uncertainties. In two experiments, OCV and IRs of reused battery packs are accurately extracted from working voltage and discharge current. An offline numerical model using a schematic method is applied to verify the applicability and efficiency of this proposed online scheme. Furthermore, a solution of actively extending life by using an ultracapacitor to share peak power of RLIB through adjusting duty ratio is also proposed. It is shown that this enhancing battery management for RLIB can properly estimate OCV and IRs, and actively extend the life of the RLIB in two experiments.

Keywords: reused battery; adaptive control theory; battery management system (BMS); internal resistances; open-circuit voltage (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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