JP2024503009A - 動力電池の充電の方法および電池管理システム - Google Patents
動力電池の充電の方法および電池管理システム Download PDFInfo
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Abstract
Description
Ut=Uca-Uan (1)
Uca=OCVca+I*Rca_0+Uca_p (2)
Uan=OCVan+I*Ran_0+Uan_p (3)
Uca_p’=I/Cca_p-Uca_p/(Rca_p*Cca_p) (4)
Uan_p’=I/Can_p-Uan_p/(Ran_p*Can_p) (5)
110 充電装置
120 電池システム
121 動力電池
122 BMS
130 電線
140 通信線
510 確定ユニット
520 調整ユニット
600 装置
601 メモリ
602 プロセッサ
603 通信インターフェース
604 バス
Claims (17)
- 動力電池の充電の方法であって、前記動力電池の電池管理システムBMSに適用され、前記方法は、
前記動力電池の充電状態SOC、温度および健康状態SOHのうちの少なくとも1つを含む前記動力電池の電池状態パラメータに基づき、負極電位安全閾値を確定することと、
前記動力電池の充電過程中に、前記動力電池の負極電位および前記負極電位安全閾値に基づき、前記動力電池の充電要求電流を調整することと、を含むことを特徴とする動力電池の充電の方法。 - 前記動力電池の負極電位および前記負極電位安全閾値に基づき、前記動力電池の充電要求電流を調整することは、
前記負極電位が前記負極電位安全閾値まで低下する場合、前記充電要求電流を、第1の充電要求電流から、前記第1の充電要求電流よりも小さい第2の充電要求電流に調整することを含むことを特徴とする請求項1に記載の方法。 - 前記動力電池の負極電位および前記負極電位安全閾値に基づき、前記動力電池の充電要求電流を調整することは、
前記負極電位が前記負極電位安全閾値まで低下せず、かつ前記動力電池の充電時間が時間閾値よりも長い場合、前記充電要求電流を、第1の充電要求電流から、前記第1の充電要求電流よりも大きい第3の充電要求電流に調整することを含むことを特徴とする請求項1に記載の方法。 - 前記動力電池のSOCが第1のSOC区間にある場合、前記負極電位安全閾値は第1の予め設定された負極電位安全閾値であり、
前記動力電池のSOCが第2のSOC区間にある場合、前記負極電位安全閾値は第2の予め設定された負極電位安全閾値であり、
ここで、前記第1のSOC区間におけるSOCは、前記第2のSOC区間におけるSOCよりも小さく、前記第1の予め設定された負極電位安全閾値は、前記第2の予め設定された負極電位安全閾値よりも小さいことを特徴とする請求項1~3のいずれか1項に記載の方法。 - 前記動力電池の温度が第1の温度区間にある場合、前記負極電位安全閾値は、第3の予め設定された負極電位安全閾値であり、
前記動力電池の温度が第2の温度区間にある場合、前記負極電位安全閾値は、第4の予め設定された負極電位安全閾値であり、
ここで、前記第1の温度区間における温度は、前記第2の温度区間における温度よりも小さく、前記第3の予め設定された負極電位安全閾値は、前記第4の予め設定された負極電位安全閾値よりも大きいことを特徴とする請求項1~4のいずれか1項に記載の方法。 - 前記動力電池のSOHが第1のSOH区間にある場合、前記負極電位安全閾値は第5の予め設定された負極電位安全閾値であり、
前記動力電池のSOHが第2のSOH区間にある場合、前記負極電位安全閾値は第6の予め設定された負極電位安全閾値であり、
ここで、前記第1のSOH区間におけるSOHは、前記第2のSOH区間におけるSOHよりも小さく、前記第5の予め設定された負極電位安全閾値は、第6の予め設定された負極電位安全閾値よりも大きいことを特徴とする請求項1~4のいずれか1項に記載の方法。 - 前記動力電池の電池状態パラメータは、前記動力電池の充電前の電池状態パラメータであることを特徴とする請求項1~6のいずれか1項に記載の方法。
- 前記動力電池の電池状態パラメータは、前記動力電池の充電過程中の電池状態パラメータであることを特徴とする請求項1~6のいずれか1項に記載の方法。
- 動力電池の電池管理システムであって、
前記動力電池の充電状態SOC、温度および健康状態SOHのうちの少なくとも1つを含む前記動力電池の電池状態パラメータに基づき、負極電位安全閾値を確定するための確定ユニットと、
前記動力電池の充電過程中に、前記動力電池の負極電位および前記負極電位安全閾値に基づき、前記動力電池の充電要求電流を調整するための調整ユニットと、を備えることを特徴とする動力電池の電池管理システム。 - 前記調整ユニットは、具体的には、
前記負極電位が前記負極電位安全閾値まで低下する場合、前記充電要求電流を、第1の充電要求電流から、前記第1の充電要求電流よりも小さい第2の充電要求電流に調整するために用いられることを特徴とする請求項9に記載の電池管理システム。 - 前記調整ユニットは、具体的には、
前記負極電位が前記負極電位安全閾値まで低下せず、かつ前記動力電池の充電時間が時間閾値よりも長い場合、前記充電要求電流を、第1の充電要求電流から、前記第1の充電要求電流よりも大きい第3の充電要求電流に調整するために用いられることを特徴とする請求項9に記載の電池管理システム。 - 前記動力電池のSOCが第1のSOC区間にある場合、前記負極電位安全閾値は第1の予め設定された負極電位安全閾値であり、
前記動力電池のSOCが第2のSOC区間にある場合、前記負極電位安全閾値は第2の予め設定された負極電位安全閾値であり、
ここで、前記第1のSOC区間におけるSOCは、前記第2のSOC区間におけるSOCよりも小さく、前記第1の予め設定された負極電位安全閾値は、前記第2の予め設定された負極電位安全閾値よりも小さいことを特徴とする請求項9~11のいずれか1項に記載の電池管理システム。 - 前記動力電池の温度が第1の温度区間にある場合、前記負極電位安全閾値は、第3の予め設定された負極電位安全閾値であり、
前記動力電池の温度が第2の温度区間にある場合、前記負極電位安全閾値は、第4の予め設定された負極電位安全閾値であり、
ここで、前記第1の温度区間における温度は、前記第2の温度区間における温度よりも小さく、前記第3の予め設定された負極電位安全閾値は、前記第4の予め設定された負極電位安全閾値よりも大きいことを特徴とする請求項9~12のいずれか1項に記載の電池管理システム。 - 前記動力電池のSOHが第1のSOH区間にある場合、前記負極電位安全閾値は第5の予め設定された負極電位安全閾値であり、
前記動力電池のSOHが第2のSOH区間にある場合、前記負極電位安全閾値は第6の予め設定された負極電位安全閾値であり、
ここで、前記第1のSOH区間におけるSOHは、前記第2のSOH区間におけるSOHよりも小さく、前記第5の予め設定された負極電位安全閾値は、前記第6の予め設定された負極電位安全閾値よりも大きいことを特徴とする請求項9~12のいずれか1項に記載の電池管理システム。 - 前記動力電池の電池状態パラメータは、前記動力電池の充電前の電池状態パラメータである請求項9~14のいずれか1項に記載の電池管理システム。
- 前記動力電池の電池状態パラメータは、前記動力電池の充電過程中の電池状態パラメータである請求項9~14のいずれか1項に記載の電池管理システム。
- コンピュータプログラムを記憶するためのメモリと、前記コンピュータプログラムを呼び出し、請求項1~8のいずれか1項に記載の動力電池の充電の方法を実行するためのプロセッサとを備えることを特徴とする動力電池の電池管理システム。
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