Discharge characteristics of multicell lithium-ion battery with nonuniform cells

JOURNAL OF POWER SOURCES

卷:241

Article

Miyatake, So¹  Susuki, Yoshihiko¹  Hikihara, Takashi¹  Itoh, Syuichi²  Tanaka, Kenichi² 

[1] Kyoto Univ, Dept Elect Engn, Nishikyo Ku, Kyoto 6158510, Japan

[2] CAPTEX Co Ltd, Okazaki, Aichi 4443511, Japan

关键词: Lithium-ion battery;    Multicell battery;    Discharge characteristics;    Nonuniform cells;    Battery topology;    Modeling;   

DOI  :  10.1016/j.jpowsour.2013.05.179

来源: Elsevier

【 摘 要 】

This paper addresses the discharge characteristics of a multicell lithium-ion battery with nonuniform cells. By using a multicell battery with two different types of cell, we experimentally investigate the relationship between discharge capacity and battery topology. In the series connection of nonuniform cells, the total capacity of the battery is governed by a cell with the smallest capacity. In the parallel connection, the total capacity becomes the sum of cells in parallel. In a multicell battery with the series-parallel connection, the discharge capacity depends on its configurations such as connection and number of nonuniform cells. Also, we derive a mathematical model for discharge characteristics of the multicell battery based on the equivalent circuit model of an individual cell. For a multicell battery with a general configuration, the discharge capacity is successfully evaluated by numerical simulations of the mathematical model. (C) 2013 Elsevier B.V. All rights reserved.

【 授权许可】

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