کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1284207 1497977 2014 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An electrochemical–thermal model based on dynamic responses for lithium iron phosphate battery
ترجمه فارسی عنوان
یک مدل حرارتی الکتروشیمیایی بر اساس پاسخهای پویا برای باتری لیتیوم آهن فسفاته است
کلمات کلیدی
مدل الکتروشیمیایی حرارتی، پاسخ های پویا، باتری فسفات آهن لیتیم، رفتار پالس، رفتار حرارتی
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی


• A model based on dynamic responses for LiFePO4 battery is developed.
• Effects of current collectors on LiFePO4 battery are considered in this model.
• Dynamic analysis for pulse behavior and electrochemical rates are conducted.
• Endothermic and exothermic phenomena in different discharge rates are discussed.

An electrochemical–thermal model is developed to predict electrochemical and thermal behaviors of commercial LiFePO4 battery during a discharging process. A series of temperatures and lithium ion concentrations dependent parameters relevant to the reaction rate and Li+ transport are employed in this model. A non-negligible contribution of current collectors to the average heat generation of the battery is considered. Simulation results on rate capability and temperature performance show good agreement with the literature data. The behavior of Li+ distribution at pulse-relaxation discharge, the variation of electrochemical reaction rate and thermal behavior at a constant current discharge are studied. Results of pulse-relaxation discharge describe the dynamic change of Li+ concentration distribution in liquid and solid phases, which is helpful to analysis the polarization of the battery. In constant current discharge processes, the electrochemical reaction rate of positive electrode has a regular change with the time and the position in the electrode. When discharge finished, there is still a part of the LiFePO4 material has not been adequately utilized. At low rate, the discharge process accompanies endothermic and exothermic processes. With the rate increasing, the endothermic process disappears gradually, and only exothermic process left at high rate.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 255, 1 June 2014, Pages 130–143
نویسندگان
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