JP6140220B2 - 電気自動車での無線電力送信 - Google Patents
電気自動車での無線電力送信 Download PDFInfo
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- JP6140220B2 JP6140220B2 JP2015136860A JP2015136860A JP6140220B2 JP 6140220 B2 JP6140220 B2 JP 6140220B2 JP 2015136860 A JP2015136860 A JP 2015136860A JP 2015136860 A JP2015136860 A JP 2015136860A JP 6140220 B2 JP6140220 B2 JP 6140220B2
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Description
本願は、下記に対して米国特許法第119条(e)に基づく優先権の主張をする。
2010年4月8日に出願され、表題が“WIRELESS POWER TRANSMISSION IN ELECTRIC VEHICLES BACKGROUND”である米国仮特許出願第61/322,196号。米国仮特許出願第61/322,196号の内容は、参照によって本明細書中に全文が組み込まれる。
2010年4月8日に出願され、表題が“WIRELESS POWER ANTENNA ALIGNMENT ADJUSTMENT SYSTEM FOR VEHICLES”である米国仮特許出願第61/322,214号。米国仮特許出願第61/322,214号の内容は、参照によって本明細書中に全文が組み込まれる。
2010年4月8日に出願され、表題が“VEHICLE GUIDANCE SYSTEM FOR WIRELESS POWER BACKGROUND”である米国仮特許出願第61/322,221号。米国仮特許出願第61/322,221号の内容は、参照によって本明細書中に全文が組み込まれる。
本願は、下記出願にも関連があり、下記出願は、本願の出願人に特許を受ける権利が譲渡されており、本願と同じ日に出願されており、下記出願の開示内容は参照により本明細書中に全文が組み込まれる。
2011年4月8日に出願され、表題が“WIRELESS POWER ANTENNA ALIGNMENT ADJUSTMENT SYSTEM FOR VEHICLES”である米国特許出願(代理人整理番号101329)。この米国特許出願の開示内容は、参照により本明細書中に全文が組み込まれる。
・利便性:充電は、事実上ドライバーが介入したり操作したりすることなく、自動的に行うことができる
・信頼性:電気的な接触面が露出したり、機械的な摩耗が生じたりすることがない。
・安全性:ケーブルやコネクタを取り扱う必要がなく、戸外の環境で湿気や水に晒されうるケーブル、プラグまたはソケットもない。
・破壊行為防止:目に見える、または、アクセスすることができるソケット、ケーブル、プラグがない。
・有用性:BEVを、送電網を安定させるための分散型蓄電装置として使用する場合。有用性は、ビーグルツーグリッド(V2G)性能を可能にする便利なドッキングツーグリッド・対応策(docking-to-grid solution)で向上できる。
・美観、及び邪魔にならない点:車および/または歩行者にとって邪魔になるカラムロード(column load)およびケーブルがない。
Q1=Q2=Q、RS=Rr=R'に対して
図25A〜25Gは、BEVのための無線電力システムの簡略化したブロック図であり、図24の可変電力制御ブロックのさまざまな典型的な実施形態を示している。図25Aでは、追加のDC/DCコンバーター442(本明細書では、DC-DCコンバーターともいう)が、AC/DCコンバーター444(本明細書ではAC-DCコンバーターともいう)と、DC/LFコンバーター446(本明細書ではDC-LFコンバーターともいう)の間に置かれている。限定はしないが、例として、このDC/DCコンバーター442は、DC/LFコンバーター446の中間DC電源の電圧レベルを修正する降圧形コンバーターまたは昇圧形コンバーターであってもよい。さらに示されているのは、DC/LFコンバーター446がデューティサイクル50%で駆動されていて、図23に関連して先に説明したように、ゼロ電流スイッチングを保証していることである。
252 EVシステム
254 バッテリーサブシステム
256 通信インターフェイス
258 無線電力インターフェイス
260 無線電力アンテナ
262 無線インターフェイス
264 電力変換(LF/DC)ユニット
266 EVバッテリー
270 無線電力インターフェイス
272 バッテリー管理ユニット
276 アンテナ
278 LF/DC電力変換ユニット
280 スーパーキャパシタバッファー
282 EV電源インターフェイス
284 EV電気システム制御ユニット
Claims (31)
- 充電プラグを介して電力を受信するように構成される伝導性充電インターフェイス(CCI)と、
無線電力リンクの磁気近接場を介して送信機から電力を無線で受信し、前記場からAC電力信号を生成するように構成されるアンテナと、
力率補正(PFC)モジュールを前記CCIまたは前記アンテナに選択的に接続するように構成されるスイッチング回路を介して前記CCIおよび前記アンテナにより共有されるPFCモジュールと、
前記スイッチング回路と前記PFCモジュールとの間に接続されるAC/DC電力コンバーターと、
前記スイッチング回路と前記アンテナとの間に接続される整流器回路とを備える、無線電力伝送装置。 - 前記PFCモジュールは、前記電力コンバーターに対して可変インピーダンスを示すことで高調波を低減するように構成される、請求項1に記載の装置。
- 前記PFCモジュールの出力に接続されるエネルギー蓄電デバイスと、
前記エネルギー蓄電デバイスと電気自動車(EV)電力コンバーターとの間に動作可能に接続される無線電力インターフェイスと
をさらに備える、請求項2に記載の装置。 - 前記PFCモジュールが、前記スイッチング回路と前記PFCモジュールとの間に動作可能に接続される電力コンバーターに対して可変インピーダンスを示すように構成される、請求項1に記載の装置。
- 前記整流器回路が、前記電力コンバーターの入力における負荷に応じてハーフブリッジおよびフルブリッジモードの間で設定可能であり、
前記整流器回路が、前記無線電力リンクの共振周波数を修正するために、動作周波数で同期的に切り替えられるように構成されるトランジスタを含む、請求項1に記載の装置。 - 前記整流器回路と前記PFCモジュールとの間に接続されるスーパーキャパシタをさらに備える、請求項5に記載の装置。
- 前記整流器回路が、i)受信モードではAC電力をDC電力に、およびii)送信モードではDC電力をAC電力に、双方向で変換するように構成される、請求項5に記載の装置。
- 前記電力コンバーターが、DC電力をCCI周波数に変換するようにさらに構成される、請求項1に記載の装置。
- 前記電力コンバーターが、
前記PFCモジュールの電力入力信号を修正するように構成される双方向DC/DCコンバーターと、
双方向DC/DCコンバーターと前記スイッチング回路との間に動作可能に接続される双方向AC/DCコンバーターとを備える、請求項1に記載の装置。 - 前記整流器回路が、LF/ACコンバーターを含み、前記LF/ACコンバーターの変換比が、調整可能なデューティサイクルを伴うパルス幅変調により調整される、請求項1に記載の装置。
- 前記整流器回路が、
バルクキャパシタンスを伴い、複数のトランジスタを備えるフルブリッジ整流器/インバーターと、
それぞれがトリムキャパシタンスを伴う複数のハーフブリッジ整流器/インバーターとを備え、
前記ハーフブリッジ整流器/インバーターのうちの少なくとも1つが、前記無線電力リンクの共振周波数を修正するために、前記フルブリッジ整流器/インバーターのトランジスタを同期的に切り替えるように構成される、請求項1に記載の装置。 - 前記整流器回路が、前記AC電力信号の動作周波数を、実質的に前記アンテナの共振周波数のサブハーモニックな周波数に変換し、前記AC電力信号を制御するようにさらに構成される、請求項1に記載の装置。
- 前記整流器回路が、送信モードにおいて周波数アップコンバーターとして構成され、受信モードにおいて周波数ダウンコンバーターとして構成され、前記電力コンバーターが、送信モードにおいて両サイドバンド変調器であり、受信モードにおいて両サイドバンド復調器である、請求項1に記載の装置。
- 低減された電流高調波を伴い無線で充電する方法であって、
伝導性充電インターフェイス(CCI)と接続するように構成される充電プラグを介して電力を受信するステップと、
無線電力リンクの磁気近接場を介して送信機からアンテナにおいて電力を無線で受信するステップと、
前記場からAC電力信号を生成するステップと、
前記アンテナに接続された整流器回路によって、前記AC電力信号を第1のDC電力信号に変換するステップと、
スイッチング回路によって、前記充電プラグを介して受信される電力、または前記第1のDC電力信号を選択的にAC/DC電力コンバーターに入力するステップと、
前記充電プラグを介して受信される電力、または前記第1のDC電力信号を第2のDC電力信号に変換するステップと、
前記第2のDC電力信号を、力率補正(PFC)モジュールに入力するステップであって、前記PFCモジュールは前記CCIおよび前記アンテナに共有される、ステップと
を含む、方法。 - 前記PFCモジュールを用いて前記電力コンバーターに対して可変インピーダンスを示すことで、前記電力コンバーターの入力において実質的に一定の負荷抵抗を生じさせることにより、前記電流高調波を低減するステップをさらに含む、請求項14の方法。
- 前記PFCモジュールが、前記選択的な接続に基づき前記電流高調波を低減するように構成される、請求項15に記載の方法。
- 前記PFCモジュールが、前記スイッチング回路と前記PFCモジュールとの間に動作可能に接続される前記電力コンバーターに対して可変インピーダンスを示すように構成される、請求項14に記載の方法。
- 前記整流器回路を用いて前記AC電力信号を変換するステップであって、前記整流器回路は、負荷に応じてハーフブリッジモードおよびフルブリッジモードの間で設定可能である、ステップと、
前記整流器回路に含まれるトランジスタを動作周波数で同期的に切り替え、前記無線電力リンクの共振周波数を修正するステップと
をさらに含む、請求項14に記載の方法。 - 前記PFCモジュールの出力信号の電流および前記出力信号の電圧の1または2以上を含む出力信号条件を決定するステップと、
前記出力信号条件をサンプリングし、パルス幅変調信号を前記整流器回路に提供して前記出力信号上の負荷の変化に適合するステップと、
前記出力信号の電圧が下限電圧を下回る場合にハーフブリッジ整流からフルブリッジ整流に切り換えること、および前記出力信号の電圧が前記下限電圧を上回る場合に前記ハーフブリッジ整流から前記フルブリッジ整流へ切り替えること、の少なくとも1つにより粗い負荷適合を行うステップと
をさらに含む、請求項18に記載の方法。 - 送信モードにおいて両サイドバンド変調を用いて前記整流器回路でアップコンバートを行うステップと、
受信モードにおいて両サイドバンド復調を用いて前記整流器回路でダウンコンバートを行うステップと
をさらに含む、請求項18に記載の方法。 - 前記整流器回路を、DC電力をAC電力に変換するように構成されるインバーター回路に再構成するステップをさらに含む、請求項18に記載の方法。
- 前記AC電力信号の周波数を、実質的に前記アンテナの共振周波数のサブハーモニックな周波数に変換し、前記AC電力信号の前記電力のレベルを制御するステップをさらに含む、請求項14に記載の方法。
- 前記PFCモジュールの出力信号に接続されるエネルギー蓄電デバイスと電気自動車(EV)電力コンバーターとの間で、無線で電力を送信するステップをさらに含む、請求項14に記載の方法。
- 伝導性充電インターフェイス(CCI)と接続するように構成される充電プラグを介して電力を受信するための手段と、
無線電力リンクの磁気近接場を介して送信機から電力を無線で受信するための手段と、
前記場からAC電力信号を生成するための手段と、
前記AC電力信号を、第1のDC電力信号に整流するための手段と、
前記充電プラグを介して受信される電力、または前記第1のDC電力信号を、電力変換のための手段に選択的に入力するスイッチング手段であって、前記電力変換のための手段は、前記充電プラグを介して受信される電力、または前記第1のDC電力信号を第2のDC電力信号に変換するように構成される、スイッチング手段と、
前記第2のDC電力信号を受信するように構成される力率補正(PFC)手段であって、前記CCIおよび前記無線受信手段に共有されるPFC手段と
を備える、装置。 - 前記PFC手段が、前記選択的に接続するための手段と前記PFC手段との間に動作可能に接続される前記AC電力信号を変換するための手段に対して可変インピーダンスを示すように構成される、請求項24に記載の装置。
- 前記PFC手段が、前記PFC手段を用いて前記電力変換のための手段に対して可変インピーダンスを示すことで、前記電力変換のための手段の入力において実質的に一定の負荷抵抗を生じさせて高調波を低減するように構成される、請求項24に記載の装置。
- 前記整流するための手段が、負荷に応じてハーフブリッジモードおよびフルブリッジモードの間で設定可能であり、
前記整流するための手段に含まれるトランジスタを動作周波数で同期的に切り替え、前記無線電力リンクの共振周波数を修正するための手段をさらに備える、請求項26に記載の装置。 - i)受信モードではAC電力をDC電力に、およびii)送信モードではDC電力をAC電力に、双方向で変換するための手段をさらに備える、請求項26に記載の装置。
- パルス幅変調信号を生成するための手段と、
前記整流するための手段の出力信号を、前記パルス幅変調信号に応答して異なる電力レベルでのDC電力出力信号に修正するための手段と
をさらに備える、請求項26に記載の装置。 - 前記無線受信手段の共振周波数を変更し、前記DC電力出力信号での負荷の変化に適合するための手段をさらに備える、請求項29に記載の装置。
- 前記DC電力出力信号の電流および電圧の1または2以上を含むDC電力出力信号条件を決定するための手段と、
前記DC電力出力信号条件をサンプリングするための手段と、
前記DC電力出力信号を修正して前記DC電力出力信号での負荷の変化に適合するために、前記整流するための手段にフィードバック信号を提供するための手段と
をさらに備える、請求項29に記載の装置。
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CN102834291A (zh) | 2012-12-19 |
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US10493853B2 (en) | 2019-12-03 |
EP2889177A1 (en) | 2015-07-01 |
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US20170267110A1 (en) | 2017-09-21 |
KR101923741B1 (ko) | 2018-11-29 |
KR20130042483A (ko) | 2013-04-26 |
US20220363146A1 (en) | 2022-11-17 |
WO2011127449A2 (en) | 2011-10-13 |
CN104477044B (zh) | 2017-05-03 |
TW201223060A (en) | 2012-06-01 |
EP2555945A2 (en) | 2013-02-13 |
JP2015213432A (ja) | 2015-11-26 |
US20200094696A1 (en) | 2020-03-26 |
US9561730B2 (en) | 2017-02-07 |
JP2013528043A (ja) | 2013-07-04 |
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