JP2020537474A - 電気自動車用バッテリ充電器 - Google Patents
電気自動車用バッテリ充電器 Download PDFInfo
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- JP2020537474A JP2020537474A JP2020520042A JP2020520042A JP2020537474A JP 2020537474 A JP2020537474 A JP 2020537474A JP 2020520042 A JP2020520042 A JP 2020520042A JP 2020520042 A JP2020520042 A JP 2020520042A JP 2020537474 A JP2020537474 A JP 2020537474A
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- power
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- input
- capacitor
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Abstract
Description
即ち、前記給電部が配電変圧器から引き込んだ電力を測定するための給電電力センサと、前記引き込み電力の値を受け取るための入力、及び、前記給電部の引き込み電力に予測される最大増加の値を供給する出力を有する電力引込み増加予測モジュールと、を備える電力コンバータであって、当該電力コンバータは、前記引き込み電力に予測される最大増加が発生した場合には、当該電力コンバータが出力する電流レベルを制限して、前記給電部の引き込み電力が所定の制限を超えることを防止するよう構成されている。さらに、以下を備える。
システムのコントローラ410としては、カスケード型比例積分(PI)コントローラを採用することができる。以下に、このコントローラについて説明する。上述したように、本実施例の構成によれば、補助コンデンサ電圧は、スイッチング状態によってバランス制御されるので、単一のDC電源インバータとして利用することが可能である。本提案のトポロジーのいくつかは、2つのDCコンデンサを用いて整流を行うためのものであるが、本実施形態では、補助コンデンサの電圧は、提案のスイッチング方式によって制御されるので、電圧調整器を追加する必要がない。よって、外部電圧コントローラを1つ用いるだけで、DC端子の出力を所望のレベルに固定することができる。なお、本実施例では、200Vが所望のレベルである。この結果、単純なカスケード型PIコントローラを用いて、DC出力電圧を調整することができるだけでなく、入力電流を制御して系統電圧と同期させて、整流器の力率補正(PFC)処理を保証することができる。コントローラ410は、EVに搭載されているようなバッテリ管理システム(BMS)からの入力に応じて、Vo及びisを調整する。
Claims (32)
- 蓄電バッテリに給電するためのバッテリ充電器であって、
給電部から単相電力を受電するためのAC入力と、
前記蓄電バッテリと通信して、充電電圧値を受け取るためのバッテリ充電コントローラインターフェースと、
前記AC入力に接続されているとともに、前記充電電圧値に応じて前記AC入力からの電力をDCに変換して、前記充電電圧値に応じて可変の電圧をDC負荷用のDC出力とする電力コンバータと、を備え、
当該電力コンバータは、
前記AC入力のピーク電圧を超える電圧に昇圧された電力を蓄積するための少なくとも1つの高圧コンデンサと、
整流器回路と、を備え、
当該整流器回路は、
前記AC入力に直列接続されたインダクタと、
低圧コンデンサと、
第1AC入力端子と前記高圧コンデンサの両端との間にそれぞれ接続された2つのダイオードか、
第1AC入力端子と前記高圧コンデンサの両端との間にそれぞれ接続された2つの高圧スイッチか、の少なくとも一方と、
前記高圧コンデンサの前記両端と前記低圧コンデンサの両端との間に接続された2つの中間低圧電力スイッチと、
前記低圧コンデンサの前記両端と第2AC入力端子との間に接続された2つの終端低圧電力スイッチと、を備え、
前記高圧コンデンサの前記両端には、DC負荷が接続可能であり、
前記電力コンバータは、さらに、
前記整流器回路における電流及び/又は電圧を感知するための少なくとも1つのセンサを有するコントローラであって、前記2つの中間低圧電力スイッチ及び前記2つの終端低圧電力スイッチのゲート入力に接続されたコントローラを備えるものである、バッテリ充電器。 - 前記コントローラは、前記整流器回路を昇圧モードで動作させるように機能し、前記高圧コンデンサの電圧は、前記AC入力のピーク電圧よりも高く、前記2つの中間低圧電力スイッチ及び前記2つの終端低圧電力スイッチは、前記低圧コンデンサの電圧の測定値に応じて、冗長性のあるスイッチング状態でスイッチングされ、これにより、前記低圧コンデンサは、前記高圧コンデンサの所望の電圧に対して所定の割合の電圧に維持され、よって、前記高圧コンデンサは、所望の高電圧に維持され、前記整流器回路は、5レベルの能動整流器として、前記AC入力の高調波を低く抑えた状態で前記DC負荷に給電するとともに、電力を吸収する、請求項1に記載の充電器。
- 前記バッテリ充電コントローラインターフェースは、さらに、前記蓄電バッテリと通信して、所望の充電電流値を受け取り、前記電力コンバータは、さらに、前記所望の充電電流値に応じて前記AC入力からの電力をDCに変換して、前記所望の充電電流値を超えない可変電流をDC負荷用のDC出力とする、請求項1又は2のいずれかに記載の充電器。
- 前記高圧コンデンサの前記両端からのDC電力を、前記充電電圧値で設定された低いDC出力電圧に降圧変換するバックコンバータ回路をさらに備える、請求項1〜3のいずれかに記載の充電器。
- 前記高圧コンデンサの前記両端からのDC電力を、前記充電電圧値で設定された高いDC出力電圧に昇圧変換するブーストコンバータ回路をさらに備える、請求項1〜4のいずれかに記載の充電器。
- 前記高圧コンデンサを前記能動整流器回路から取り外して交換するためのソケット型コネクタを備える、請求項1〜5のいずれかに記載の充電器。
- 前記高圧コンデンサは、少なくとも1つの電子識別コンポーネントと、当該電子識別コンポーネントを前記コントローラに接続するためのインターフェースと、を含むプラグインモジュールに組み込まれており、前記コントローラは、前記電子識別コンポーネントが欠落しているとき、又は、前記プラグインモジュールを正しく識別できないときは、動作を抑止するよう構成されている、請求項6に記載の充電器。
- 前記2つの中間低圧電力スイッチ及び前記2つの終端低圧電力スイッチは、10kHzを超える周波数でスイッチングされる、請求項1〜7のいずれかに記載の充電器。
- 前記単相AC入力の電圧は、RMSで約240Vであり、前記DC出力電力の電圧は、350Vよりも高い、請求項1〜8のいずれかに記載の充電器。
- 前記充電器は、複数のモジュールソケットと、前記モジュールソケットに接続された少なくとも1つのモジュールと、を有するコネクタバックプレーンを含む筐体を備え、前記モジュールの各々は、前記整流器回路を備え、前記モジュールは、並列に動作して前記負荷にDC電力を供給する、請求項1〜9のいずれかに記載の充電器。
- 前記モジュールの各々における前記高圧コンデンサの容量は、約4ミリファラドである、請求項10に記載の充電器。
- 前記モジュールの各々は、約2kW超のDC負荷電力を供給可能である、請求項10又は11に記載の充電器。
- DC車両充電ケーブル及び充電プラグをさらに備える、請求項1〜12のいずれかに記載の充電器。
- 9.5kW超のDC負荷電力を供給可能である、請求項1〜10のいずれかに記載の充電器。
- 前記充電器は、可搬型の充電器であって、さらにAC入力ケーブルと、DC出力ケーブルと、筐体と、を備え、当該筐体は、複数のモジュールソケットと、前記モジュールソケットに接続された少なくとも1つのモジュールと、を有するコネクタバックプレーンを有し、前記モジュールの各々は、前記整流器回路を備え、前記モジュールは、並列に動作して前記負荷にDC電力を供給する、請求項1〜14のいずれかに記載の充電器。
- 前記電力コンバータは、前記給電部が配電変圧器から引き込んだ電力を測定するための給電電力センサ、及び、前記引き込み電力の値を受け取るための入力と、前記給電部の引き込み電力に予測される最大増加の値を供給する出力と、を有する引込み電力増加予測モジュールを備え、前記電力コンバータは、前記引き込み電力に予測される最大増加が発生した場合には、当該電力コンバータが出力する電流レベルを制限して、前記給電部の引き込み電力が所定の制限を超えることを防止するよう構成されている、請求項1〜15のいずれかに記載の充電器。
- 前記電気自動車は、前記可搬型充電器のコネクタの存在を検知するセンサを有するレセプタを備える、請求項15に記載の充電器。
- 前記可搬型充電器が前記車に積み込まれていること、又は、その近くにあること、を示す無線自動識別(RFID)及びブルートゥースセンサのうちの一方をさらに備える、請求項14又は15に記載の充電器。
- 前記整流器回路は、双方向整流器/インバータ回路であって、ACポートに直列接続されたインダクタと、低圧コンデンサと、第1AC端子と前記高圧コンデンサの両端との間にそれぞれ接続された2つの高圧電力スイッチと、前記高圧コンデンサの前記両端と前記低圧コンデンサの両端との間にそれぞれ接続された2つの中間低圧電力スイッチと、前記低圧コンデンサの前記両端と第2AC入力端子との間にそれぞれ接続された2つの終端低圧電力スイッチと、を備え、前記高圧コンデンサの前記両端には、DC負荷が接続可能であり、
前記コントローラは、整流器モード用の第1コントローラであって、前記双方向整流器/インバータの電流及び/又は電圧を感知するための少なくとも1つのセンサを有するとともに、前記2つの高圧電力スイッチ、前記2つの中間低圧電力スイッチ、及び、前記2つの終端低圧電力スイッチのゲート入力に接続されており、前記整流器回路を昇圧モードで動作させるコントローラであり、前記高圧コンデンサの電圧は、前記AC入力のピーク電圧よりも高く、前記2つの高圧電力スイッチは、前記AC入力の周波数でオンオフ切り替えを行うように制御され、前記2つの中間低圧電力スイッチ及び前記2つの終端低圧電力スイッチは、前記低圧コンデンサの電圧の測定値に応じて、冗長性のあるスイッチング状態でスイッチングされ、これにより、前記低圧コンデンサは、前記高圧コンデンサの所望の電圧に対して所定の割合の電圧に維持され、よって、前記高圧コンデンサは、所望の高電圧に維持され、前記整流器回路は、5レベルの能動整流器として、前記AC入力の高調波を低く抑えた状態で前記DC負荷に給電するとともに、電力を吸収し、
前記電力コンバータは、インバータモード用の第2コントローラをさらに備え、当該第2コントローラは、前記2つの高圧電力スイッチと、前記2つの中間低圧電力スイッチと、前記2つの終端低圧電力スイッチと、に接続されているとともに、第1制御信号を含む信号波形及び第2制御信号を含む信号波形を生成して、前記2つの高圧電力スイッチ、前記2つの中間低圧電力スイッチ、及び、前記2つの終端低圧電力スイッチに印加するよう構成されており、前記第1制御信号は、前記低圧コンデンサを前記DCポート及び前記ACポートに直列接続させて、前記低圧コンデンサを前記DCポートの電圧に比例した所定の値まで充電させる信号であり、前記第2信号は、前記低圧コンデンサを前記DCポートから切断させて、前記ACポートに直列接続させることで、前記低圧コンデンサを放電させる信号である、請求項1〜18のいずれかに記載のバッテリ充電器。 - レベル1又はレベル2のEV充電用のAC出力と、前記電力コンバータを切断して、前記AC入力と前記AC出力の間にAC電流を通電させるよう切り替えるためのスイッチと、をさらに備える、請求項1〜19のいずれかに記載のバッテリ充電器。
- レベル3のEV用DC充電器にアップグレードして蓄電バッテリに給電可能なレベル2のEV用ACバッテリ充電器であって、
筐体を備え、当該筐体は、
給電部から単相電力を受電するAC入力と、
AC出力と、
DC出力と、
少なくとも1つのDC電力コンバータモジュールを装着可能に構成された少なくとも1つのモジュールコネクタを有し、前記AC入力と前記DC出力を接続するためのコネクタバックプレーンと、
前記AC入力と前記AC出力の間にAC電流を通電させるためのスイッチと、を備えるものである、バッテリ充電器。 - 前記スイッチは、前記少なくとも1つのDC電力コンバータモジュールにより制御される、請求項21に記載のバッテリ充電器。
- 前記少なくとも1つのDC電力コンバータモジュールを物理的に設置する際は、前記スイッチが開状態とされる、請求項22に記載のバッテリ充電器。
- 前記スイッチは、ソケット型のコネクタである、請求項23に記載のバッテリ充電器。
- AC出力電圧が所望の充電電圧を超えること、及び、AC出力電流が所望の充電電流を超えること、を防止する過剰電力防止モジュールをさらに備える、請求項21〜24のいずれかに記載のバッテリ充電器。
- 前記蓄電バッテリと通信して、充電電圧値及び所望の充電電流値を受け取るためのバッテリ充電コントローラインターフェースをさらに備える、請求項21〜25のいずれかに記載のバッテリ充電器。
- 蓄電バッテリに給電するためのバッテリ充電器であって、
給電部から単相電力を受電するためのAC入力と、
前記給電部が配電変圧器から引き込んだ電力を測定するための給電電力センサと、
前記引き込み電力の値を受け取るための入力、及び、前記給電部の引き込み電力に予測される最大増加の値を供給する出力を有する引込み電力増加予測モジュールと
前記蓄電バッテリと通信して、充電電圧値を受け取るためのバッテリ充電コントローラインターフェースと、
前記AC入力に接続されているとともに、前記充電電圧値及び前記所望の充電電流に応じて前記AC入力からの電力をDC変換して、前記充電電圧値に応じて可変の電圧をDC出力とする電力コンバータと、を備え、前記電力コンバータは、前記引き込み電力に予測される最大増加が発生した場合には、当該電力コンバータが出力する電流レベルを制限して、前記給電部の引き込み電力が所定の制限を超えることを防止するよう構成されている、バッテリ充電器。 - 前記電力コンバータは、充電優先度パラメータを規定するユーザ入力を受け取るためのユーザ入力インターフェースを有する充電電力プログラムモジュールを備え、前記充電電力プログラムモジュールは、前記充電優先度パラメータに応じて前記電流レベルを経時的に制御する、請求項27に記載のバッテリ充電器。
- ユーザ入力を受け取るための前記ユーザ入力インターフェースは、充電プラグに設けられた少なくとも1つのスイッチを備える、請求項27又は28に記載の充電器。
- ネットワークインターフェースをさらに備え、ユーザ入力を受け取るための前記ユーザ入力インターフェースは、前記ネットワークインターフェースに接続されたリモートデバイスユーザインターフェースを備える、請求項27〜29のいずれかに記載の充電器。
- バッテリの劣化を評価することができるように、前記充電電力プログラムモジュールは、充電電流の履歴を記録する、請求項27〜30いずれかに記載の充電器。
- 負荷制限スイッチをさらに備え、前記引込み電力増加予測モジュールは、前記負荷制限スイッチに接続されており、前記引き込み電力に近々に予測される最大増加によって前記所定の制限を超過するリスクがあるときは、前記負荷制限スイッチに接続可能な少なくとも1つのシフト可能な負荷を一時的に切断し、前記引込み電力増加予測モジュールは、前記所定の制限を超過する近々のリスクが回避されたと判定すると、前記シフト可能な負荷を再接続するよう構成されている、請求項27〜31のいずれかに記載の充電器。
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