直並列切替式セル電圧バランス回路を用いた電気二重層キャパシタモジュール

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2011/05/01

タイトル(英語): Electric Double-Layer Capacitor Module with Series-Parallel Reconfigurable Cell Voltage Equalizers

著者名: 鵜野　将年（宇宙航空研究開発機構），久木田明夫（宇宙航空研究開発機構），田中　孝治（宇宙航空研究開発機構）

著者名(英語): Masatoshi Uno (Japan Aerospace Exploration Agency), Akio Kukita (Japan Aerospace Exploration Agency), Koji Tanaka (Japan Aerospace Exploration Agency)

キーワード: 電気二重層キャパシタ，セル電圧バランス回路，電圧ばらつき，等価抵抗，電流分布　　Electric Double-Layer Capacitor (EDLC)，cell voltage equalizer，voltage imbalance，equivalent resistor，current distribution

要約(英語): When electric double-layer capacitors (EDLCs) are connected in series, cell voltage imbalance that results due to non-uniform cell properties is observed. Cell voltage imbalance should be minimized to prolong cycle lives and maximize the available energy of cells. In this study, we propose a series-parallel reconfigurable cell voltage equalizer that is considered suitable for energy-storage systems using EDLCs instead of traditional secondary batteries as main energy-storage sources. The proposed equalizer requires only EDLCs and switches as its main circuit elements, and it utilizes EDLCs not only for energy storage but also for equalization. An equivalent circuit model using equivalent resistors that can be regarded as an index of equalization speed is developed. Current distribution and cell voltage imbalance during operation are quantitatively generalized. Experimental charge-discharge tests were performed for EDLC modules to demonstrate the performance of the cell voltage equalizer. All the cells in the modules could be charged/discharged uniformly even when a degradation-mimicking cell was intentionally included in the module. The resultant cell voltage imbalances and current distributions were in good agreement with those predicted by mathematical analyses.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.131 No.5 （2011）

本誌掲載ページ: 729-738 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/ieejias/131/5/131_5_729/_article/-char/ja/