New Estimation Method of State-of-Charge of NiCd and NiMH Batteries Based on System Identification

Autor:	Alexandru Forrai, Hirohito Funato, Yukihiro Yanagita, Satoshi Ogasawara
Rok vydání:	2006
Předmět:	Battery (electricity) Signal processing State of charge Computer science System identification Electronic engineering Output impedance State (computer science) Electrical and Electronic Engineering Industrial and Manufacturing Engineering Voltage
Zdroj:	IEEJ Transactions on Industry Applications. 126:285-291
ISSN:	1348-8163 0913-6339
Popis:	The objective of this study is to find out a simple, time and cost-effective method for the assessment of state of batteries. In this study, the targets of estimation are NiCd, NiMH batteries that are widely used in portable equipments, but are difficult to estimate exact state. In our previous studies, the mathematical model was successfully derived from short-time measurement of voltage and current of battery using proposed signal processing scheme suitable for batteries characteristics. This paper presents a novel estimation method of state of NiMH battery using parameter fluctuations of internal impedance. In the proposed method, an equation for estimation was obtained as a function of parameters. Using this equation, state-of-charges of NiMH batteries were experimentally estimated with error less than 10%.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d427ea12a1023c8a531215884de7c48a https://doi.org/10.1541/ieejias.126.285 Zobrazit plný text záznamu