JP5812032B2 - 蓄電システム及び蓄電装置の満充電容量推定方法 - Google Patents
蓄電システム及び蓄電装置の満充電容量推定方法 Download PDFInfo
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Description
出精度を向上させて、満充電容量を精度良く算出する蓄電システム及び蓄電装置の満充電容量推定方法を提供することにある。
(式1)
満充電容量=電流積算値(ΣI)÷(SOC_e−SOC_s)×100
(式2)
満充電容量学習値=前回満充電容量学習値×(1−K)+満充電容量×K
Claims (7)
- 車両に搭載される蓄電システムであって、
充放電を行う蓄電装置と、
前記蓄電装置の電圧及びSOCの対応関係に基づいてSOCを算出するとともに、充電前後のSOC差と充電中の充電電流積算値とに基づいて前記蓄電装置の満充電容量を算出するコントローラと、を有し、
前記コントローラは、充電開始に伴って算出される第1SOCが、前記対応関係においてSOC変化に対する電圧の変化率が所定値よりも小さい領域に対応するSOCである場合に、前記蓄電装置のSOCを前記第1SOCから前記変化率が所定値よりも大きい領域に対応する第2SOCになるまで充電し、
前記第2SOCに充電された状態から充電終了までの充電電流積算値と、前記第2SOC及び充電終了の際に算出される第3SOCのSOC差と、に基づいて、前記満充電容量を算出し、
前記コントローラは、算出された前記満充電容量を充電毎に学習し、前回算出された満充電容量学習値に算出された前記満充電容量を反映して新たな満充電容量学習値を算出するとともに、
充電前後の前記SOC差の充電開始SOCとして用いられるSOCの前記対応関係における前記変化率に基づいて、前記新たな満充電容量学習値に反映される算出された前記満充電容量の反映量を変更することを特徴とする蓄電システム。 - 前記コントローラは、前記第1SOCが前記大きい領域に対応するSOCである場合、前記第1SOCの状態から充電終了までの充電電流積算値と、前記第1SOC及び前記第3SOCのSOC差とに基づいて、前記満充電容量を算出することを特徴とする請求項1に記載の蓄電システム。
- 前記コントローラは、前記第1SOCが前記小さい領域に対応するSOCである場合に、前記蓄電装置のSOCを、前記小さい領域に隣接する前記大きい領域における最も高い前記変化率に対応するSOCまで充電することを特徴とする請求項1又は2に記載の蓄電システム。
- 前記コントローラは、前記第1SOCが前記小さい領域に対応するSOCである場合に、前記蓄電装置のSOCが前記第1SOCから前記変化率が所定値よりも大きい領域に対応するSOCになるまで充電された後に充電を一時停止し、一時停止されてから所定時間経過後に前記第2SOCを算出することを特徴とする請求項1から3のいずれか1つに記載の蓄電システム。
- 車両に搭載される蓄電装置の満充電容量推定方法であって、
前記蓄電装置の電圧及びSOCの対応関係に基づいて充電前後の各SOCそれぞれを算出するとともに、充電中の充電電流積算値を算出する第1ステップと、
充電前後のSOC差と前記充電電流積算値とに基づいて満充電容量を算出する第2ステップと、
算出された前記満充電容量を充電毎に学習し、前回算出された満充電容量学習値に算出された前記満充電容量を反映して新たな満充電容量学習値を算出する第3ステップと、を含み、
前記第1ステップは、
充電開始に伴って第1SOCを算出するステップと、
前記第1SOCが、前記対応関係においてSOC変化に対する電圧の変化率が所定値よりも小さい領域に対応するSOCである場合に、前記蓄電装置のSOCを前記第1SOCから前記変化率が所定値よりも大きい領域に対応する第2SOCになるまで充電するステップと、
前記第2SOCに充電された状態から充電終了までの充電電流積算値と、前記第2SOC及び充電終了の際に算出される第3SOCのSOC差とに基づいて、前記満充電容量を算出するステップと、を含み、
前記第3ステップは、充電前後の前記SOC差の充電開始SOCとして用いられるSOCの前記対応関係における前記変化率に基づいて、前記新たな満充電容量学習値に反映される算出された前記満充電容量の反映量を変更することを特徴とする満充電容量推定方法。 - 車両に搭載される蓄電システムであって、
充放電を行う蓄電装置と、
充電前後のSOC差と充電中の充電電流積算値とに基づいて前記蓄電装置の満充電容量を算出するとともに、算出された前記満充電容量を充電毎に学習して、前回算出された満充電容量学習値に算出された前記満充電容量を反映して新たな満充電容量学習値を算出するコントローラと、を有し、
前記コントローラは、充電前後の前記SOC差の充電開始SOCとして用いられるSOCの、前記蓄電装置のSOCを算出するために用いられる前記蓄電装置の電圧及びSOCの対応関係におけるSOC変化に対する電圧の変化率に基づいて、前記新たな満充電容量学習値に反映される算出された前記満充電容量の反映量を変更することを特徴とする蓄電システム。 - 車両に搭載される蓄電装置の満充電容量推定方法であって、
前記蓄電装置の電圧及びSOCの対応関係に基づいて充電前後の各SOCそれぞれを算出するとともに、充電中の充電電流積算値を算出する第1ステップと、
充電前後のSOC差と前記充電電流積算値とに基づいて満充電容量を算出する第2ステップと、
算出された前記満充電容量を充電毎に学習し、前回算出された満充電容量学習値に算出された前記満充電容量を反映して新たな満充電容量学習値を算出する第3ステップと、を含み、
前記第3ステップは、充電前後の前記SOC差の充電開始SOCとして用いられるSOCの、前記蓄電装置のSOCを算出するために用いられる前記蓄電装置の電圧及びSOCの対応関係におけるSOC変化に対する電圧の変化率に基づいて、前記新たな満充電容量学習値に反映される算出された前記満充電容量の反映量を変更することを特徴とする満充電容量推定方法。
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US14/778,772 US20160049821A1 (en) | 2013-03-22 | 2014-03-17 | Electrical storage system, and full charge capacity estimation method for electrical storage device |
CN201480017574.8A CN105050855A (zh) | 2013-03-22 | 2014-03-17 | 蓄电系统和用于蓄电装置的满充电容量估计方法 |
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