کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7731759 1497943 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study on the correlation between state of charge and coulombic efficiency for commercial lithium ion batteries
ترجمه فارسی عنوان
بررسی رابطه ی وضعیت شارژ و کارایی کولمونی برای باتری های لیتیوم یونی
کلمات کلیدی
باتری لیتیوم یون، بازده کولومیک، دولت شارژ، تنوع سلولی، ظرفیت بسته
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
Coulombic efficiency (CE) is an important parameter for battery cells. Unfortunately, precise measurement of CE is extremely difficult, so CE is seldom focused during cell performance study. Nevertheless, correlation between stage of charge (SOC) and CE has significant impact on battery pack performance, while the influences of different correlations between SOC and CE on battery packs have never been explored as far as we know. We present a novel method which implements two series-connected cells that can determine the correlation between SOC and CE. The experimental result shows that CE is almost invariant with SOC changes for the experimental commercial LiFePO4/C cells. This paper further investigates series-connected cells with three typical correlations between SOC and CE in simulations. The simulation results indicate that cells with negative correlations between CE and SOC are preferred for series-connected battery packs, as they tend to diminish SOC difference and increase the pack capacity which can be considered as a self-balancing mechanism.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 289, 1 September 2015, Pages 81-90
نویسندگان
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