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An Enhanced State-of-Charge and State-of-Health Estimation Method Based on Ampere-Hour Counting for Lead-Acid Batteries

This thesis proposes an enhanced ampere-hour counting method based on the depth-of-discharge (DOD) to estimate the state-of-charge (SOC) and state-of-health (SOH) for lead-acid batteries. Not only the losses at different discharging currents, but also the releasable capacity at the exhausted state caused by the larger discharging current are considered and compensated. Furthermore, the SOH is revaluated at the exhausted state by the maximum releasable capacity, consequently leading to more accurate SOC estimation. Through the experiments that emulate practical operations, the experimental results reveal that the maximum error is less than 6 %.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0812108-225424
Date12 August 2008
CreatorsHuang, Yao-Feng
ContributorsHau Chen Yen, Chin-Sien Moo, Tsorng-Juu Liang, Yao-Ching Hsieh, Jiann-Fuh Chen
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageCholon
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0812108-225424
Rightsnot_available, Copyright information available at source archive

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