インピーダンスと起電力測定に基づくリチウムイオン電池の劣化と電圧応答の検討

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: 2016/07/01

タイトル(英語): Investigation of Degradation and Voltage Response of Lithium-ion Battery based on Impedance and Electromotive Force Measurement

著者名: 乾　義尚（滋賀県立大学），坂本　眞一（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), Shinichi Sakamoto (The University of Shiga Prefecture), Tadashi Tanaka (Ibaraki University)

キーワード: リチウムイオン電池，劣化プロセス，交流インピーダンス特性，起電力，電圧過渡応答　　lithium-ion battery，degradation process，AC impedance characteristics，electromotive force，transient voltage response

要約(英語): Detailed information on degradation process of lithium-ion batteries is essential to manage the batteries throughout their lifetime because degradation of the batteries associated with long-term usage is inevitable. To evaluate degradation degree of the batteries in detail, it is necessary to separately make clear the decrease in output power due to the increase in AC impedance and the decrease in battery capacity caused by the decrease in electromotive force. In this study, therefore, the authors at first propose a new evaluation method of detailed degradation process of lithium-ion batteries through measurements of AC impedance and electromotive force of degraded batteries. It is made clear that this proposed evaluation method can provide simple but detailed diagnosis of battery degradation degree, indicating usefulness of the proposed method. Next, as a first step for performance simulation of degraded lithium-ion batteries, the authors make clear that the already developed simulation method of battery transient voltage response, validity of which has been confirmed only for new batteries, is also applicable to degraded batteries.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.136 No.7 （2016）

本誌掲載ページ: 636-644 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/136/7/136_636/_article/-char/ja/