JP7431866B2 - 充放電装置、電池充電方法及び充放電システム - Google Patents
充放電装置、電池充電方法及び充放電システム Download PDFInfo
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- JP7431866B2 JP7431866B2 JP2021576109A JP2021576109A JP7431866B2 JP 7431866 B2 JP7431866 B2 JP 7431866B2 JP 2021576109 A JP2021576109 A JP 2021576109A JP 2021576109 A JP2021576109 A JP 2021576109A JP 7431866 B2 JP7431866 B2 JP 7431866B2
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- Y02T10/72—Electric energy management in electromobility
Description
例として、該通信回線140は、制御エリアネットワーク(control area network、CAN)の通信バス又はデイジーチェーン(daisy chain)の通信バスを含むがそれらに限定されない。
選択可能に、いくつかの実施形態では、BMSは、充電電流及び充電電圧を定期的に取得し、且つ該充電電流及び充電電圧が運ばれるBCLメッセージを充放電装置に定期的に送信することができ、同様に、BMSは、放電電流及び放電電圧を定期的に取得し、且つ該放電電流及び放電電圧が運ばれるBCLメッセージを充放電装置に定期的に送信することもできる。該実施形態では、BCLメッセージの定期的な送信方式は従来標準におけるBCLメッセージの定期的な送信方式と同じであってもよい。
110 充放電装置
120 電池システム
121 電池
122 電池管理システム(battery management system、BMS)
130 電線
140 通信回線
200 電池充電方法
300 電池充電方法
500 電池充電方法
600 電池充電方法
700 電池充電方法
800 電池充電方法
900 電池管理システム、BMS
910 取得ユニット
920 送信ユニット
930 処理ユニット
1000 充放電装置
1010 受信ユニット
1020 処理ユニット
1100 充放電装置
1110 制御ユニット
1120 電力変換ユニット
1210 直流(alternating current/direct current、AC/DC)変換器、双方向AC/DC変換器、AC/DC変換器
1220 直流(direct current/direct current、DC/DC)変換器、第1のDC/DC変換器
1230 第2のDC/DC変換器
1240 エネルギー貯蔵ユニット
1700 電池充電方法
1800 電子装置
1810 メモリ
1820 プロセッサ
Claims (20)
- 充放電装置であって、双方向交流/直流AC/DC変換器、第1の直流/直流DC/DC変換器、及び制御ユニットを含み、前記第1のDC/DC変換器は双方向DC/DC変換器であり、
前記制御ユニットは、
電池の電池管理システムBMSから送信された第1の充電電流、第1の放電電流及び第2の充電電流を順に受信し、
前記第1の充電電流を受信した場合、前記第1の充電電流に基づき、前記双方向AC/DC変換器及び前記第1のDC/DC変換器を制御して、交流電源を介して前記電池を充電することと、
前記第1の放電電流を受信した場合、前記第1の放電電流に基づき、前記電池の電量を放出することであって、前記第1の放電電流は、前記電池の第1の累積充電量が第1の累積充電量閾値以上であり且つ前記電池の電池セルの電圧が電池セルの満充電電圧を超えない場合、前記BMSから送信された放電電流である、ことと、
前記第2の充電電流を受信した場合、前記第2の充電電流に基づき、前記双方向AC/DC変換器及び前記第1のDC/DC変換器を制御して、前記交流電源を介して前記電池を充電することであって、前記第2の充電電流は前記電池の第1の累積放電量が第1の累積放電量閾値以上である場合、前記BMSから送信された充電電流である、ことと、
に用いられる充放電装置。 - 前記制御ユニットはさらに、
前記BMSから送信された第2の放電電流を受信し、前記第2の放電電流に基づき、前記電池の電量を放出することであって、前記第2の放電電流は、前記電池の第2の累積充電量が第2の累積充電量閾値以上であり且つ前記電池の電池セルの電圧が電池セルの満充電電圧を超えない場合、前記BMSから送信された放電電流である、ことに用いられる請求項1に記載の充放電装置。 - 前記制御ユニットはさらに、
前記BMSから送信された充電停止コマンドを受信し、前記充電停止コマンドに基づき、前記電池への充電を停止することであって、前記充電停止コマンドは前記電池の電池セルの電圧が電池セルの満充電電圧を超える場合、前記BMSから送信されたコマンドである、ことに用いられる請求項1又は2に記載の充放電装置。 - 前記充放電装置は第2のDC/DC変換器をさらに含み、前記第2のDC/DC変換器は、一端が前記第1のDC/DC変換器と前記電池との間に接続され、他端にエネルギー貯蔵ユニットが接続され、
前記制御ユニットは具体的に、
前記第1の放電電流に基づき、前記双方向AC/DC変換器及び前記第1のDC/DC変換器を制御して、前記電池の電量を前記交流電源に放出することと、
前記第2のDC/DC変換器を制御して、前記電池の電量を前記エネルギー貯蔵ユニットに放出することと、に用いられる請求項1~3のいずれか1項に記載の充放電装置。 - 前記制御ユニットは具体的に、
前記電池の放電需要電力が前記双方向AC/DC変換器の最大入力電力よりも大きい場合、前記第1の放電電流に基づき、前記双方向AC/DC変換器及び前記第1のDC/DC変換器を制御して、前記電池の電量を前記交流電源に放出することと、
前記第2のDC/DC変換器を制御して、前記電池の電量を前記エネルギー貯蔵ユニットに放出することと、に用いられる請求項4に記載の充放電装置。 - 前記電池が前記交流電源に放電する電力は前記双方向AC/DC変換器の最大入力電力に等しく、
前記電池が前記エネルギー貯蔵ユニットに放電する電力は前記電池の放電需要電力と前記双方向AC/DC変換器の最大入力電力との差に等しい請求項4又は5に記載の充放電装置。 - 前記第2のDC/DC変換器は双方向DC/DC変換器であり、前記制御ユニットは具体的に、
エネルギー貯蔵ユニットのSOCが荷電状態閾値よりも大きい場合、前記第1の充電電流に基づき、前記双方向AC/DC変換器及び前記第1のDC/DC変換器を制御して、前記交流電源を介して前記電池を充電することと、
前記第2のDC/DC変換器を制御して、前記エネルギー貯蔵ユニットを介して前記電池を充電することと、に用いられる請求項4~6のいずれか1項に記載の充放電装置。 - 前記エネルギー貯蔵ユニットが前記電池を充電する電力は前記第2のDC/DC変換器の最大出力電力であり、
前記交流電源が前記電池を充電する電力は前記電池の充電需要電力と前記第2のDC/DC変換器の最大出力電力との差である請求項7に記載の充放電装置。 - 前記制御ユニットはさらに、
前記電池の放電需要電力が前記双方向AC/DC変換器の最大入力電力未満である場合、前記第1の放電電流に基づき、前記双方向AC/DC変換器及び前記第1のDC/DC変換器を制御して、前記電池の電量を前記交流電源に放出することに用いられる請求項4~8のいずれか1項に記載の充放電装置。 - 電池充電方法であって、充放電装置に応用され、前記充放電装置は双方向交流/直流AC/DC変換器、第1の直流/直流DC/DC変換器、及び制御ユニットを含み、前記第1のDC/DC変換器は双方向DC/DC変換器であり、
前記電池充電方法は、
電池の電池管理システムBMSから送信された第1の充電電流、第1の放電電流及び第2の充電電流を順に受信し、
前記第1の充電電流を受信した場合、前記第1の充電電流に基づき、前記双方向AC/DC変換器及び前記第1のDC/DC変換器を制御して、交流電源を介して前記電池を充電するステップと、
前記第1の放電電流を受信した場合、前記第1の放電電流に基づき、前記電池の電量を放出するステップであって、前記第1の放電電流は、前記電池の第1の累積充電量が第1の累積充電量閾値以上であり且つ前記電池の電池セルの電圧が電池セルの満充電電圧を超えない場合、前記BMSから送信された放電電流である、ステップと、
前記第2の充電電流を受信した場合、前記第2の充電電流に基づき、前記双方向AC/DC変換器及び前記第1のDC/DC変換器を制御して、前記交流電源を介して前記電池を充電するステップであって、前記第2の充電電流は前記電池の第1の累積放電量が第1の累積放電量閾値以上である場合、前記BMSから送信された充電電流である、ステップと、
を含む電池充電方法。 - 前記電池充電方法はさらに、
前記BMSから送信された第2の放電電流を受信し、前記第2の放電電流に基づき、前記電池の電量を放出するステップであって、前記第2の放電電流は、前記電池の第2の累積充電量が第2の累積充電量閾値以上であり且つ前記電池の電池セルの電圧が電池セルの満充電電圧を超えない場合、前記BMSから送信された放電電流である、ステップを含む請求項10に記載の電池充電方法。 - 前記電池充電方法はさらに、
前記BMSから送信された充電停止コマンドを受信し、前記充電停止コマンドに基づき、前記電池への充電を停止するステップであって、前記充電停止コマンドは前記電池の電池セルの電圧が電池セルの満充電電圧を超える場合、前記BMSから送信されたコマンドである、ステップを含む請求項10又は11に記載の電池充電方法。 - 前記充放電装置は第2のDC/DC変換器をさらに含み、前記第2のDC/DC変換器は、一端が前記第1のDC/DC変換器と前記電池との間に接続され、他端にエネルギー貯蔵ユニットが接続され、
前記第1の放電電流に基づき、前記電池の電量を放出する前記ステップは、
前記第1の放電電流に基づき、前記双方向AC/DC変換器及び前記第1のDC/DC変換器を制御して、前記電池の電量を前記交流電源に放出するステップと、
前記第2のDC/DC変換器を制御して、前記電池の電量を前記エネルギー貯蔵ユニットに放出するステップと、を含む請求項10~12のいずれか1項に記載の電池充電方法。 - 前記第1の放電電流に基づき、前記双方向AC/DC変換器及び前記第1のDC/DC変換器を制御して、前記電池の電量を前記交流電源に放出し、及び、前記第2のDC/DC変換器を制御して、前記電池の電量を前記エネルギー貯蔵ユニットに放出する前記ステップは、
前記電池の放電需要電力が前記双方向AC/DC変換器の最大入力電力よりも大きい場合、前記第1の放電電流に基づき、前記双方向AC/DC変換器及び前記第1のDC/DC変換器を制御して、前記電池の電量を前記交流電源に放出するステップと、
前記第2のDC/DC変換器を制御して、前記電池の電量を前記エネルギー貯蔵ユニットに放出するステップと、を含む請求項13に記載の電池充電方法。 - 前記電池が前記交流電源に放電する電力は前記双方向AC/DC変換器の最大入力電力に等しく、
前記電池が前記エネルギー貯蔵ユニットに放電する電力は前記電池の放電需要電力と前記双方向AC/DC変換器の最大入力電力との差に等しい請求項13又は14に記載の電池充電方法。 - 前記第2のDC/DC変換器は双方向DC/DC変換器であり、
前記第1の充電電流に基づき、前記双方向AC/DC変換器及び前記第1のDC/DC変換器を制御して、前記交流電源を介して前記電池を充電する前記ステップは、
エネルギー貯蔵ユニットのSOCが荷電状態閾値よりも大きい場合、前記第1の充電電流に基づき、前記双方向AC/DC変換器及び前記第1のDC/DC変換器を制御して、前記交流電源を介して前記電池を充電するステップと、
前記第2のDC/DC変換器を制御して、前記エネルギー貯蔵ユニットを介して前記電池を充電するステップと、を含む請求項13~15のいずれか1項に記載の電池充電方法。 - 前記エネルギー貯蔵ユニットが前記電池を充電する電力は前記第2のDC/DC変換器の最大出力電力であり、
前記交流電源が前記電池を充電する電力は前記電池の充電需要電力と前記第2のDC/DC変換器の最大出力電力との差である請求項16に記載の電池充電方法。 - 前記電池充電方法はさらに、
前記電池の放電需要電力が前記双方向AC/DC変換器の最大入力電力未満である場合、前記第1の放電電流に基づき、前記双方向AC/DC変換器及び前記第1のDC/DC変換器を制御して、前記電池の電量を前記交流電源に放出するステップを含む請求項13~17のいずれか1項に記載の電池充電方法。 - プロセッサ及びメモリを含み、前記メモリはコンピュータプログラムを記憶することに用いられ、前記プロセッサは前記コンピュータプログラムを呼び出し、請求項10~18のいずれか1項に記載の電池充電方法を実行することに用いられる充放電装置。
- 充放電システムであって、
電池の電池管理システムBMSと、
請求項1~9のいずれか1項に記載の充放電装置と、
を含む充放電システム。
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