高出力タイプリチウムイオンニ次電池のパルス充放電時の電圧応答シミュレーション

摘要

Calculations of transient cell voltage response of a high power density type lithium-ion secondary battery are carried out for high-rate and pulse-wave charge/discharge current by using the numerical simulation method already proposed and developed by the authors. In order to confirm the validity of the simulation method, the numerically obtained transient cell voltage responses are compared with the corresponding experimental findings under various conditions. As a result, it is successfully demonstrated that the calculated transient responses coincide well with those obtained through measurements in all cases. This indicates the usefulness of the numerical simulation method of transient cell voltage response proposed and developed by the authors, because it can calculate the transient cell voltage response with sufficient accuracy even in the case a high power density type battery experiences high-rate and pulse-wave charge/discharge current.%携帯電話やノートパソコン等の小型携帯用機器の電源として既に広く実用化されているリチウムイオンニ次電池（1）（2）は，高充放電効率かつ高重量エネルギー密度という特長を生かして，太陽光発電，風力発電等の自然エネルギー利用発電の出力平準化用蓄電池（3）やハイブリッド自動車，電気自動車等の環境にやさしい次世代型自動車の駆動用電源（2）（4）等，さまざまな用途での今後の実用化が期待されている。