リチウムイオン電池の充放電時発熱量の等価回路を用いた詳細推定手法

カテゴリ: 論文誌(論文単位)

グループ名: 【B】電力・エネルギー部門

発行日: 2019/10/01

タイトル(英語): Detailed Estimation Method of Heat Generation During Charge/Discharge in Lithium-Ion Battery Using Equivalent Circuit

著者名: 乾　義尚（滋賀県立大学），平山　智士（滋賀県立大学），田中　正志（茨城大学）

著者名(英語): Yoshitaka Inui (The University of Shiga Prefecture), Satoshi Hirayama (The University of Shiga Prefecture), Tadashi Tanaka (Ibaraki University)

キーワード: リチウムイオン電池，発熱量推定手法，等価回路，エントロピー変化，熱量計　　lithium-ion battery，estimation method of heat generation，equivalent circuit，entropy change，calorimeter

要約(英語): Lithium-ion batteries are becoming practically used for high power applications such as electric vehicles. For this purpose, some estimation technique of battery heat generation is inevitable. The authors, therefore, have already proposed a simple estimation method of the heat generation in lithium-ion batteries during their charge/discharge using internal equivalent resistance and confirmed validity of the method for constant current discharge patterns. The merit of this method is its simplicity but it has already been made clear that its versatility for various current patterns is not enough. Considering these facts, in this study, the authors newly proposed a detailed estimation method of the heat generation in lithium-ion batteries during their charge/discharge using equivalent circuit. The authors compared the estimation results of the heat generation in lithium-ion battery for various constant or pulse current charge/discharge patterns through the newly proposed detailed estimation method with the estimation results through the conventional simple estimation method and measured results through a calorimeter for the corresponding current patterns. The versatility of the newly proposed detailed estimation method was successfully confirmed through these comparisons, indicating the validity and necessity of the proposed method.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.139 No.10 （2019）

本誌掲載ページ: 610-619 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/139/10/139_610/_article/-char/ja/