JP7074791B2 - 車載システム、二次電池管理システム、充電率の出力方法、およびプログラム - Google Patents
車載システム、二次電池管理システム、充電率の出力方法、およびプログラム Download PDFInfo
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- JP7074791B2 JP7074791B2 JP2020064349A JP2020064349A JP7074791B2 JP 7074791 B2 JP7074791 B2 JP 7074791B2 JP 2020064349 A JP2020064349 A JP 2020064349A JP 2020064349 A JP2020064349 A JP 2020064349A JP 7074791 B2 JP7074791 B2 JP 7074791B2
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- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Sustainable Energy (AREA)
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- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Tests Of Electric Status Of Batteries (AREA)
Description
図1は、実施形態におけるV2Gシステム1の一例を示すブロック図である。V2Gシステム1は、商用電力網を含む電力系統(不図示)と車両Vとの間で電力の授受を行うシステムである。V2Gシステム1は、例えば、車載システム100と、外部電源装置200と、電力事業者サーバ装置300を含む。なお、実施形態のV2Gシステム1は、一つの車両Vおよび外部電源装置200を記載しているが、複数の車両Vおよび外部電源装置200を備えていてよい。
先ず、電力事業者サーバ装置300は、車載システム100にスタンバイ要求を送信する(ステップS100)。スタンバイ要求は、電力事業者サーバ装置300からの要求を待機するモードに移行する要求である。通信部150は、スタンバイ要求を受信し、当該スタンバイ要求を制御部140に供給する。通信部150および制御部140は、所定のスタンバイ処理を行う(ステップS102)。通信部150は、スタンバイ要求により電力事業者サーバ装置300からの要求を受信する待機状態となり、制御部140は、電力事業者サーバ装置300からの要求に応じた処理の待機状態になる。
制御部140は、第1のタイミングt1において、二次電池122の開回路電圧に相当する電圧としてのVbatを検出する(ステップS200)。第1のタイミングt1は、例えば、車両Vが停止し、車両Vにケーブル400が接続され、二次電池122の充電電力および放電電力がゼロになるように制御または二次電池122の蓄電電力が一定となるように制御されたタイミングである。制御部140は、時刻t1において検出された電圧Vbatに基づいてSOC(t1)を推定する(ステップS202)。
100 車載システム
110 電力供給部
120 バッテリ制御部
122 二次電池
124 電流センサ
126 電圧センサ
130 補機
140 制御部
150 通信部
200 外部電源装置
210 制御部
300 電力事業者サーバ装置
400 ケーブル
402A、402B プラグ
404A、404B 接続口
Claims (5)
- 車両に搭載された二次電池の電圧を示す信号を取得する取得部と、
外部電源装置から供給される電力を用いて、前記車両に搭載された補機または前記二次電池に前記電力を供給する電力供給部と、
前記取得部により取得した前記二次電池の電圧を示す信号に基づいて、前記二次電池の充電率を推定する制御部と、を備え、
前記制御部は、前記車両が停止し、前記二次電池の充電率が推定される場合、前記外部電源装置から供給される電力を用いて、前記補機の消費電力相当の電力を出力すると共に、前記二次電池の充電率を一定にするように前記電力供給部を制御する、
車載システム。 - 前記二次電池の電圧を示す信号は、前記二次電池の開回路電圧に相当する電圧を示す信号である、
請求項1に記載の車載システム。 - 請求項1または2に記載の車載システムと、
前記車両が停止し、前記二次電池の蓄電電力を一定にするように前記電力供給部を制御している第1のタイミングにおいて前記取得部が取得した前記二次電池の電圧を示す情報に基づいて出力された第1の充電率と、前記車両が停止し、前記二次電池の蓄電電力を一定にするように前記電力供給部を制御している第2のタイミングにおいて前記取得部が取得した前記二次電池の電圧を示す情報に基づいて出力された第2の充電率との変化に基づいて、前記二次電池の劣化を出力する劣化出力部と、
を備える二次電池管理システム。 - 車両に搭載された二次電池の電圧を示す信号を取得するステップと、
外部電源装置から供給される電力を用いて、前記車両に搭載された補機または前記二次電池に前記電力を供給するステップと、
前記二次電池の電圧を示す信号に基づいて、前記二次電池の充電率を推定するステップと、を有し、
前記推定するステップは、前記車両が停止した場合に、前記外部電源装置から供給される電力を用いて、前記補機の消費電力相当の電力を出力すると共に、前記二次電池の充電率を一定にするように前記二次電池の出力電力を制御することを含む、
充電率の出力方法。 - 車載システムのコンピュータに、
車両に搭載された二次電池の電圧を示す信号を取得するステップと、
外部電源装置から供給される電力を用いて、前記車両に搭載された補機または前記二次電池に前記電力を供給するステップと、
前記二次電池の電圧を示す信号に基づいて、前記二次電池の充電率を推定するステップと、を実行させ、
前記推定するステップは、前記車両が停止した場合に、前記外部電源装置から供給される電力を用いて、前記補機の消費電力相当の電力を出力すると共に、前記二次電池の充電率を一定にするように前記二次電池の出力電力を制御することを含む、
プログラム。
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