据置用リチウムイオン二次電池の放電可能容量と放電途中電圧の推定法 Methods for Estimating Available Capacity and Voltage Change of Stationary Lithium-ion Secondary Battery Under Operation

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Methods for estimating available capacity and voltage changes during the discharge of a large-capacity lithium-ion battery were developed and their effectiveness was demonstrated. The cell was developed for such uses as a backup in power supply systems etc. Lithium-ion cells with storage capacity ratings of 10 and 40Ah were exposed to high-temperature acceleration tests. We observed a correlation between a cell's available capacity and voltage drops that we believe is effective for estimating the available capacity of the cell. We were able to predict the voltage change in a varying load-current discharge with a high degree of accuracy. This is because for a lithium-ion cell, the voltage change profile in a stepwise-varying constant-current load can be expressed as a conjunction of partial discharge voltage curves of first, second and other sequent discharge current every time discharge duration of each constant current is terminated. We believe the methods are practical as a monitoring function in power systems equipped with a lithium-ion battery.

収録刊行物

  • 電気学会論文誌. B, 電力・エネルギー部門誌 = The transactions of the Institute of Electrical Engineers of Japan. B, A publication of Power and Energy Society  

    電気学会論文誌. B, 電力・エネルギー部門誌 = The transactions of the Institute of Electrical Engineers of Japan. B, A publication of Power and Energy Society 126(10), 1083-1090, 2006-10-01 

    The Institute of Electrical Engineers of Japan

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各種コード

  • NII論文ID(NAID)
    10018780986
  • NII書誌ID(NCID)
    AN10136334
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03854213
  • NDL 記事登録ID
    8526496
  • NDL 雑誌分類
    ZN31(科学技術--電気工学・電気機械工業)
  • NDL 請求記号
    Z16-794
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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