JP6224130B2 - 制御システム、車両用電源装置 - Google Patents
制御システム、車両用電源装置 Download PDFInfo
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- Power Engineering (AREA)
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- Combustion & Propulsion (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Automation & Control Theory (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Description
二次電池9を規定の電流レートで充電または放電した場合の前記二次電池9の劣化度を記述した第一の関連データであり、前記二次電池9のSOC(State Of Charge)範囲を複数領域に分割した複数のSOC領域ごとに前記劣化度をそれぞれ記述した第一の関連データと、
前記二次電池9から監視データを取得する監視データ取得部12と、
取得された監視データをもとに、前記二次電池9のSOCを推定するSOC推定部13と、
推定されたSOCと、目標とすべき劣化度をもとに前記第一の関連データを参照して、充電時または放電時の電流レートとすべき上限電流値を決定する上限電流決定部14と、
を備えることを特徴とする制御システム。
これにより、二次電池9の劣化を抑制できる。
[項目2]
前記上限電流決定部14は、前記SOC推定部13により推定されたSOCが属するSOC領域の劣化度が第1設定値より大きい場合、前記上限電流値を下げることを特徴とする項目1に記載の制御システム。
これにより、二次電池9の劣化を抑制できる。
[項目3]
前記上限電流決定部14は、前記SOC推定部13により推定されたSOCが属するSOC領域の劣化度が第2設定値より小さい場合、前記上限電流値を上げることを特徴とする項目1または2に記載の制御システム。
これにより、二次電池9の劣化を抑制しつつ、二次電池9から電力供給を受ける負荷のトルクを増大させることができる。
[項目4]
前記第一の関連データは、前記二次電池9のSOC範囲を複数領域に分割した複数のSOC領域ごとに、複数種類の電流レートで充電または放電した場合の劣化度をそれぞれ記述しており、
前記上限電流決定部14は、前記SOC推定部13により推定されたSOCが属するSOC領域の劣化度および電流レートを参照して、前記劣化度が第3設定値を超えない範囲で、最大の電流レートを選択して前記上限電流値に設定することを特徴とする項目1に記載の制御システム。
これにより、二次電池9を劣化を抑制しつつ負荷のトルクを最適化できる。
[項目5]
前記第一の関連データは、複数の温度区分ごとに設けられ、
前記監視データ取得部12は、前記二次電池9から前記二次電池9の温度を取得し、
前記上限電流決定部14は、取得された温度をもとに、参照する第一の関連データを選択することを特徴とする項目1から4のいずれかに記載の制御システム。
これにより、上限電流値をより最適に設定できる。
[項目6]
前記制御システム40は、車両走行用のモータ7に電力を供給するための二次電池9を制御し、
前記二次電池9の劣化度と、前記モータ7により車両100の走行アシストを行う上限速度との関係を関連付けした第二の関連データと、
前記推定されたSOCをもとに前記第一の関連データを参照して特定された劣化度をもとに、前記第二の関連データを参照して、前記モータ7による走行アシストを行う上限速度を決定する上限速度決定部23と、
をさらに備えることを特徴とする項目1から5のいずれかに記載の制御システム。
これにより、二次電池9の劣化を考慮した最適なアシスト上限速度を決定できる。
[項目7]
前記モータ7は、車両減速時に減速エネルギーにより発電し、
前記第二の関連データは、前記二次電池9の劣化度と、前記モータ7から電力回生を行う上限速度との関係をさらに規定し、
前記上限速度決定部23は、推定されたSOCをもとに前記第一の関連データを参照して特定された劣化度をもとに、前記第二の関連データを参照して、前記モータ7から電力回生を行う上限速度を決定することを特徴とする項目6に記載の制御システム。
これにより、二次電池9の劣化を考慮した最適な回生上限速度を決定できる。
[項目8]
車両走行用7のモータに電力を供給するための二次電池9を制御する制御システムであって、
前記二次電池9を規定の電流レートで充電または放電した場合の前記二次電池9の劣化度を記述した第一の関連データであり、前記二次電池9のSOC範囲を複数領域に分割した複数のSOC領域ごとに前記劣化度をそれぞれ記述した第一の関連データと、
前記二次電池9の劣化度と、前記モータ7により車両100の走行アシストを行う上限速度との関係を関連付けした第二の関連データと、
前記二次電池9から監視データを取得する監視データ取得部12と、
取得された監視データをもとに、前記二次電池9のSOCを推定するSOC推定部13と、
前記推定されたSOCをもとに前記第一の関連データを参照して劣化度を特定し、当該劣化度をもとに前記第二の関連データを参照して、前記モータ7による走行アシストの上限速度を決定する上限速度決定部23と、
を備えることを特徴とする制御システム。
これにより、二次電池9の劣化を考慮した最適なアシスト上限速度を決定できる。
[項目9]
車両走行用のモータ7に電力を供給するための二次電池9と、
前記二次電池9を制御する項目1から5のいずれかに記載の制御システム40と、
を備えることを特徴とする車両用電源装置50。
これにより、二次電池9の劣化抑制または負荷のトルク増大を実現できる。
Claims (9)
- 二次電池を規定の電流レートで充電または放電した場合の前記二次電池の劣化しやすさの指標である劣化度を記述した第一の関連データであり、前記二次電池のSOC(State Of Charge)範囲を複数領域に分割した複数のSOC領域ごとに前記劣化度をそれぞれ記述した第一の関連データと、
前記二次電池から監視データを取得する監視データ取得部と、
取得された監視データをもとに、前記二次電池のSOCを推定するSOC推定部と、
推定されたSOCと、目標とすべき前記劣化度をもとに前記第一の関連データを参照して、充電時または放電時の電流レートとすべき上限電流値を決定する上限電流決定部と、
を備えることを特徴とする制御システム。 - 前記上限電流決定部は、前記SOC推定部により推定されたSOCが属するSOC領域の前記劣化度が第1設定値より大きい場合、前記上限電流値を下げることを特徴とする請求項1に記載の制御システム。
- 前記上限電流決定部は、前記SOC推定部により推定されたSOCが属するSOC領域の前記劣化度が第2設定値より小さい場合、前記上限電流値を上げることを特徴とする請求項1または2に記載の制御システム。
- 前記第一の関連データは、前記二次電池のSOC範囲を複数領域に分割した複数のSOC領域ごとに、複数種類の電流レートで充電または放電した場合の前記劣化度をそれぞれ記述しており、
前記上限電流決定部は、前記SOC推定部により推定されたSOCが属するSOC領域の前記劣化度および電流レートを参照して、前記劣化度が第3設定値を超えない範囲で、最大の電流レートを選択して前記上限電流値に設定することを特徴とする請求項1に記載の制御システム。 - 前記第一の関連データは、複数の温度区分ごとに設けられ、
前記監視データ取得部は、前記二次電池から前記二次電池の温度を取得し、
前記上限電流決定部は、取得された温度をもとに、参照する第一の関連データを選択することを特徴とする請求項1から4のいずれかに記載の制御システム。 - 前記制御システムは、車両走行用のモータに電力を供給するための二次電池を制御し、
前記二次電池の前記劣化度と、前記モータにより車両の走行アシストを行う上限速度との関係を関連付けした第二の関連データと、
前記推定されたSOCをもとに前記第一の関連データを参照して特定された前記劣化度をもとに、前記第二の関連データを参照して、前記モータによる走行アシストを行う上限速度を決定する上限速度決定部と、
をさらに備えることを特徴とする請求項1から5のいずれかに記載の制御システム。 - 前記モータは、車両減速時に減速エネルギーにより発電し、
前記第二の関連データは、前記二次電池の前記劣化度と、前記モータから電力回生を行う上限速度との関係をさらに規定し、
前記上限速度決定部は、推定されたSOCをもとに前記第一の関連データを参照して特定された前記劣化度をもとに、前記第二の関連データを参照して、前記モータから電力回生を行う上限速度を決定することを特徴とする請求項6に記載の制御システム。 - 車両走行用のモータに電力を供給するための二次電池を制御する制御システムであって、
前記二次電池を規定の電流レートで充電または放電した場合の前記二次電池の劣化しやすさの指標である劣化度を記述した第一の関連データであり、前記二次電池のSOC(State Of Charge)範囲を複数領域に分割した複数のSOC領域ごとに前記劣化度をそれぞれ記述した第一の関連データと、
前記二次電池の前記劣化度と、前記モータにより車両の走行アシストを行う上限速度との関係を関連付けした第二の関連データと、
前記二次電池から監視データを取得する監視データ取得部と、
取得された監視データをもとに、前記二次電池のSOCを推定するSOC推定部と、
前記推定されたSOCをもとに前記第一の関連データを参照して前記劣化度を特定し、当該劣化度をもとに前記第二の関連データを参照して、前記モータによる走行アシストの上限速度を決定する上限速度決定部と、
を備えることを特徴とする制御システム。 - 車両走行用のモータに電力を供給するための二次電池と、
前記二次電池を制御する請求項1から5のいずれかに記載の制御システムと、
を備えることを特徴とする車両用電源装置。
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |