JP2008005657A - 電源システムおよびそれを備える車両 - Google Patents
電源システムおよびそれを備える車両 Download PDFInfo
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- H—ELECTRICITY
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- H—ELECTRICITY
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- H02M3/00—Conversion of dc power input into dc power output
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Abstract
【解決手段】ヒステリシス特性部は、現在の選択状態(履歴)に依存する状態特性ST1およびST2に従って、選択指令SEL1,SEL2の出力を切換える。すなわち、ヒステリシス特性部は、選択指令SEL1が選択中であれば、状態特性ST1に従って切換判定を実行する一方、選択指令SEL2が選択中であれば、状態特性ST2に従って切換判定を実行する。充放電電圧Vb1が充放電電圧Vb2に比較して、切換しきい値電圧Vth1を超えて低下すれば、選択指令SEL1から選択指令SEL2への切換が実行される(遷移特性TR12)。
【選択図】図5
Description
図3は、片側停止モードにおいて駆動力発生部3との間で授受される電力を示す概略図である。
図3(b)は、コンバータCONV2が選択されて電力変換動作を行なう場合を示す。
図4は、本発明の実施の形態に従う制御部2における制御構造を示すブロック図である。
図5は、ヒステリシス特性部52のより詳細な動作を説明するための図である。
図6(b)は、従来技術に従う選択指令の時間的変化を示す。
上述の図6(a)に示すような出力電圧Vb1と出力電圧Vb2との間の電圧差の時間的変化は、蓄電部BAT1,BAT2における出力電圧Vb1,Vb2の変動度合いに大きく影響される。すなわち、出力電圧Vb1,Vb2の変動度合いが大きければ、出力電圧Vb1と出力電圧Vb2との間の電圧差も大きく変動することになる。そのため、出力電圧Vb1,Vb2の変動度合いが大きければ、切換しきい値電圧Vth1,Vth2も大きくして、電力変換動作を実行するコンバータの切換頻度を抑制することが望ましい。
図7は、蓄電部BATの出力電圧Vbの変動度合いと、蓄電部温度Tbおよび出力電流Ibとの関連を説明するための図である。
図9は、蓄電部BATの出力電圧Vbの変動度合いと、蓄電部BATの内部抵抗および蓄電部BATの劣化度合いとの関連を説明するための図である。
図11は、蓄電部BATの出力電圧Vbの変動度合いと、蓄電部BATの残存容量SOCおよび蓄電部BATの劣化度合いとの関連を説明するための図である。
本発明は、上述した2つの蓄電部を有する電源システムに加えて、3個以上の蓄電部を有する電源システムについても適用できる。
Claims (13)
- 各々が充放電可能に構成された複数の蓄電部を有する電源システムであって、
負荷装置と前記電源システムとの間で電力を授受可能に構成された電力線と、
前記複数の蓄電部と前記電力線との間にそれぞれ設けられ、各々が対応の前記蓄電部と前記電力線との間で電圧変換動作を行なう複数の電圧変換部と、
前記負荷装置からの電力要求に応じて、前記複数の電圧変換部に含まれる第1および第2の電圧変換部のうち、一方の電圧変換部の電圧変換動作を実行させるとともに、他方の電圧変換部の電圧変換動作を停止させる動作モードを選択する動作モード選択手段と、
前記動作モードの選択時に、各々に対応する前記蓄電部の出力電圧に基づいて、電圧変換動作を実行させる前記電圧変換部を選択する電圧変換部選択手段とを備え、
前記電圧変換部選択手段は、電圧変換動作を実行中の前記電圧変換部に対応する前記蓄電部の出力電圧が、電圧変換動作を停止中の前記電圧変換部に対応する前記蓄電部の出力電圧よりも、所定のしきい値電圧を超えて低下したときに、電圧変換動作を実行させる前記電圧変換部を切換える、電源システム。 - 前記電圧変換部選択手段は、前記動作モードにおける初期値として、各々に対応する前記蓄電部の出力電圧が大きい方の前記電圧変換部を選択する、請求項1に記載の電源システム。
- 前記切換しきい値電圧は、前記蓄電部の出力電圧の変動度合いに関連する状態値に応じて決定される、請求項1または2に記載の電源システム。
- 前記切換しきい値電圧は、前記第1および第2の電圧変換部の各々に対応する前記蓄電部の少なくとも一方の温度に応じて変更される、請求項3に記載の電源システム。
- 前記切換しきい値電圧は、電圧変換動作を実行中の電圧変換部に対応する前記蓄電部の出力電流に応じて変更される、請求項3または4に記載の電源システム。
- 前記切換しきい値電圧は、前記第1および第2の電圧変換部の各々に対応する前記蓄電部の少なくとも一方の内部抵抗に応じて変更される、請求項3〜5のいずれか1項に記載の電源システム。
- 前記切換しきい値電圧は、前記第1および第2の電圧変換部の各々に対応する前記蓄電部の少なくとも一方の劣化度合いに応じて変更される、請求項3〜6のいずれか1項に記載の電源システム。
- 前記切換しきい値電圧は、前記第1および第2の電圧変換部の各々に対応する前記蓄電部の少なくとも一方の残存容量に応じて変更される、請求項3〜7のいずれか1項に記載の電源システム。
- 前記切換しきい値電圧は、前記第1の電圧変換部から前記第2の電圧変換部への切換判定に用いられる第1の切換しきい値電圧と、前記第1の電圧変換部から前記第2の電圧変換部への切換判定に用いられる第2の切換しきい値電圧とを含む、請求項1〜8のいずれか1項に記載の電源システム。
- 各々が充放電可能に構成された複数の蓄電部を有する電源システムと、
前記電源システムから供給される電力を受けて駆動力を発生する駆動力発生部とを備える車両であって、
前記電源システムは、
前記駆動力発生部と前記電源システムとの間で電力を授受可能に構成された電力線と、
前記複数の蓄電部と前記電力線との間にそれぞれ設けられ、各々が対応の前記蓄電部と前記電力線との間で電圧変換動作を行なう複数の電圧変換部と、
前記負荷装置からの電力要求に応じて、前記複数の電圧変換部に含まれる第1および第2の電圧変換部のうち、一方の電圧変換部の電圧変換動作を実行させるとともに、他方の電圧変換部の電圧変換動作を停止させる動作モードを選択する動作モード選択手段と、
前記動作モードの選択時に、各々に対応する前記蓄電部の出力電圧に基づいて、電圧変換動作を実行させる前記電圧変換部を選択する電圧変換部選択手段とを備え、
前記電圧変換部選択手段は、電圧変換動作を実行中の前記電圧変換部に対応する前記蓄電部の出力電圧が、電圧変換動作を停止中の前記電圧変換部に対応する前記蓄電部の出力電圧よりも、所定のしきい値電圧を超えて低下したときに、電圧変換動作を実行させる前記電圧変換部を切換える、車両。 - 前記電圧変換部選択手段は、前記動作モードにおける初期値として、各々に対応する前記蓄電部の出力電圧が大きい方の前記電圧変換部を選択する、請求項10に記載の車両。
- 前記切換しきい値電圧は、前記蓄電部の出力電圧の変動度合いに関連する状態値に応じて決定される、請求項10または11に記載の車両。
- 前記切換しきい値電圧は、前記第1の電圧変換部から前記第2の電圧変換部への切換判定に用いられる第1の切換しきい値電圧と、前記第1の電圧変換部から前記第2の電圧変換部への切換判定に用いられる第2の切換しきい値電圧とを含む、請求項10〜12のいずれか1項に記載の車両。
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JP2006174113A JP4356708B2 (ja) | 2006-06-23 | 2006-06-23 | 電源システムおよびそれを備える車両 |
KR1020097001174A KR101006213B1 (ko) | 2006-06-23 | 2007-06-07 | 전원시스템 및 이를 구비한 차량 |
BRPI0713525-4A BRPI0713525A2 (pt) | 2006-06-23 | 2007-06-07 | sistema de abastecimento de energia e veìculo que inclui o mesmo |
PCT/JP2007/061962 WO2007148592A1 (ja) | 2006-06-23 | 2007-06-07 | 電源システムおよびそれを備える車両 |
RU2009102051A RU2391764C1 (ru) | 2006-06-23 | 2007-06-07 | Система электропитания и транспортное средство, содержащее такую систему |
CA2654468A CA2654468C (en) | 2006-06-23 | 2007-06-07 | Power supply system and vehicle including the same |
CN2007800235289A CN101479918B (zh) | 2006-06-23 | 2007-06-07 | 电源系统及具备该电源系统的车辆 |
EP07745219.1A EP2034596B1 (en) | 2006-06-23 | 2007-06-07 | Power supply system and vehicle having the same |
US12/227,850 US8267207B2 (en) | 2006-06-23 | 2007-06-07 | Power supply system and vehicle including the same |
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WO2017208789A1 (ja) * | 2016-06-02 | 2017-12-07 | 三菱電機株式会社 | 電力変換システム |
JPWO2017208789A1 (ja) * | 2016-06-02 | 2018-12-13 | 三菱電機株式会社 | 電力変換システム |
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BRPI0713525A2 (pt) | 2012-02-14 |
EP2034596A4 (en) | 2017-04-26 |
WO2007148592A1 (ja) | 2007-12-27 |
JP4356708B2 (ja) | 2009-11-04 |
US20090145675A1 (en) | 2009-06-11 |
US8267207B2 (en) | 2012-09-18 |
CN101479918A (zh) | 2009-07-08 |
CA2654468C (en) | 2014-01-07 |
CN101479918B (zh) | 2011-12-28 |
RU2391764C1 (ru) | 2010-06-10 |
KR20090023716A (ko) | 2009-03-05 |
KR101006213B1 (ko) | 2011-01-07 |
EP2034596B1 (en) | 2019-04-03 |
EP2034596A1 (en) | 2009-03-11 |
CA2654468A1 (en) | 2007-12-27 |
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