JP6513879B2 - 二次電池の出力パラメータを調整するシステム及びその方法 - Google Patents
二次電池の出力パラメータを調整するシステム及びその方法 Download PDFInfo
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Description
一例として、メモリ部150は、RAM、ROM、レジスター、ハードディスク、光記録媒体または磁気記録媒体であり得る。
[数式1]
許容出力P=Vmin×Imax
[数式2]
[数式3]
V=OCV(z)+IR0+IRCR
[数式4]
dV/dt=dOCV/dt+(dI/dt)R0+(dIRC/dt)R
+IRC(dR/dt)
[数式5]
dV/dt=(dI/dt)R0+IRC(dR/dt)
[数式6]
V1−V0=(I1−I0)R0+I1(dR/dt)(t1−t0)
[数式7]
[数式8]
Pderate=Vmin×Iderate
以下、本発明による実験例を説明する。ここで、説明される実験例は、本発明の効果を述べるために提供されるものであり、本発明の技術的思想が実験例として開示される内容によって限定されない。
Claims (15)
- 二次電池の電圧、電流及び温度を各々測定する電圧測定部、電流測定部及び温度測定部と、
前記電圧測定部、電流測定部及び温度測定部に電気的に接続した制御部と、を含み、
前記制御部は、二次電池が放電する間、前記電圧測定部、電流測定部及び温度測定部から測定結果の入力を受け、二次電池の電圧、電流及び温度を決定し、前記電流を用いて二次電池の充電状態を決定し、二次電池の電圧が予め設定された臨界電圧以下に低下すれば、前記充電状態と前記温度に対応して予め定義された抵抗変化率の最大値及び出力維持時間から算出された低減目標電流値を決定し、前記低減目標電流値及びこれによって決定される低減目標出力値のうち少なくとも一つを含む出力パラメータを、二次電池から電力の供給を受ける負荷装置の制御システムに提供するように構成されたことを特徴とする二次電池の出力パラメータの調整システム。 - 前記出力パラメータが適用されるまでかかる時間を遅延時間として定義すれば、前記臨界電圧のレベルは、二次電池が前記充電状態及び前記温度に対応する最大放電電流値で放電されるとき、二次電池の電圧が前記臨界電圧から放電下限電圧まで低下するのにかかる時間が前記遅延時間よりも大きく、かつ前記出力維持時間よりも小さく設定されたことを特徴とする請求項1に記載の二次電池の出力パラメータの調整システム。
- 前記制御部が、下記の数式によって二次電池の低減目標電流値を決定するように構成され、
- 前記制御部が、低減目標電流値と放電下限電圧との掛け算によって低減目標出力値を決定するように構成されたことを特徴とする請求項1に記載の二次電池の出力パラメータの調整システム。
- 前記充電状態及び前記温度に対応して予め定義された抵抗変化率の最大値を保存しているメモリ部をさらに含むことを特徴とする請求項1に記載の二次電池の出力パラメータの調整システム。
- 前記制御部と電気的に結合した通信インターフェースをさらに含み、
前記制御部が、前記通信インターフェースを介して前記出力パラメータを前記制御システムに周期的に伝送することを特徴とする請求項1に記載の二次電池の出力パラメータの調整システム。 - 前記制御部は、二次電池の電圧が前記臨界電圧よりも高ければ、二次電池の充電状態及び温度ごとに予め定義された最大放電電流値のデータを参照して二次電池の充電状態及び温度に対応する最大放電電流値を決定し、
前記最大放電電流値及びこれによって算出された許容出力値のうち少なくとも一つを含む出力パラメータを、前記負荷装置の制御システムに提供するように構成されたことを特徴とする請求項1に記載の二次電池の出力パラメータの調整システム。 - (a)二次電池が放電する間、二次電池の電圧、電流及び温度を測定する段階と、
(b)前記電流を用いて二次電池の充電状態を決定する段階と、
(c)二次電池の電圧が予め設定された臨界電圧以下に低下すれば、前記充電状態と前記温度に対応して予め定義された抵抗変化率の最大値及び出力維持時間から低減目標電流値を決定する段階と、
(d)前記低減目標電流値及びこれによって決定される低減目標出力値のうち少なくとも一つを含む出力パラメータを決定する段階と、
(e)前記出力パラメータを、二次電池から電力の供給を受ける負荷装置の制御システムに提供する段階と、を含むことを特徴とする二次電池の出力パラメータの調整方法。 - 前記出力パラメータが適用されるまでかかる時間を遅延時間として定義すれば、前記臨界電圧のレベルは、二次電池が前記充電状態及び前記温度に対応する最大放電電流値で放電されるとき、二次電池の電圧が前記臨界電圧から放電下限電圧まで低下するのにかかる時間が前記遅延時間よりも大きく、かつ前記出力維持時間よりも小さく設定されることを特徴とする請求項8に記載の二次電池の出力パラメータの調整方法。
- 前記(c)段階は、下記の数式によって二次電池の低減目標電流値を決定する段階であり、
- 前記(d)段階が、前記低減目標電流値と放電下限電圧との掛け算によって低減目標出力値を決定する段階を含むことを特徴とする請求項8に記載の二次電池の出力パラメータの調整方法。
- 前記(e)段階が、通信インターフェースを介して前記出力パラメータを前記制御システムに伝送する段階であることを特徴とする請求項8に記載の二次電池の出力パラメータの調整方法。
- 二次電池の電圧が前記臨界電圧よりも高ければ、二次電池の充電状態及び温度ごとに予め定義された最大放電電流値のデータを参照して二次電池の充電状態及び温度に対応する最大放電電流値を決定する段階と、
前記最大放電電流値及びこれによって算出された許容出力値のうち少なくとも一つを含む出力パラメータを決定する段階と、
前記負荷装置の制御システムに前記出力パラメータを提供する段階と、をさらに含むことを特徴とする請求項8に記載の二次電池の出力パラメータの調整方法。 - 二次電池の電圧、電流及び温度を各々測定する電圧測定部、電流測定部及び温度測定部と、
前記電圧測定部、電流測定部及び温度測定部と電気的に接続した制御部と、を含み、
前記制御部は、二次電池が充電される間に、前記電圧測定部、電流測定部及び温度測定部から測定結果の入力を受け、二次電池の電圧、電流及び温度を決定し、前記電流を用いて二次電池の充電状態を決定し、二次電池の電圧が予め設定された臨界電圧以上に増加すれば、前記充電状態と前記温度に対応して予め定義された抵抗変化率の最大値及び出力維持時間から算出された低減目標電流値を決定し、前記低減目標電流値及びこれによって決定される低減目標出力値のうち少なくとも一つを含む出力パラメータを二次電池に充電電力を供給する負荷装置の制御システムに提供することを特徴とする二次電池の出力パラメータの調整システム。 - (a)二次電池が充電される間、二次電池の電圧、電流及び温度を測定する段階と、
(b)前記電流を用いて二次電池の充電状態を決定する段階と、
(c)二次電池の電圧が予め設定された臨界電圧以上に上昇すれば、前記充電状態と前記温度に対応して予め定義された抵抗変化率の最大値及び出力維持時間から低減目標電流値を決定する段階と、
(d)前記低減目標電流値及びこれによって決定される低減目標出力値のうち少なくとも一つを含む出力パラメータを決定する段階と、
(e)前記出力パラメータを二次電池に充電電力を供給する負荷装置の制御システムに提供する段階と、を含むことを特徴とする二次電池の出力パラメータの調整方法。
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