JP6081130B2 - 車載用電力制御装置の冷却システム及び異常診断方法 - Google Patents
車載用電力制御装置の冷却システム及び異常診断方法 Download PDFInfo
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- JP6081130B2 JP6081130B2 JP2012226663A JP2012226663A JP6081130B2 JP 6081130 B2 JP6081130 B2 JP 6081130B2 JP 2012226663 A JP2012226663 A JP 2012226663A JP 2012226663 A JP2012226663 A JP 2012226663A JP 6081130 B2 JP6081130 B2 JP 6081130B2
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- Engineering & Computer Science (AREA)
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- Transportation (AREA)
- Power Engineering (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
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- Automation & Control Theory (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
Description
吸入空気量が一定の量以上確保された状態でないと判断した際に、前記冷却装置の異常の有無の判定を中止するとともに、前記吸入空気量が一定の量以上確保された状態であると判断した際に、前記エンジンの吸気通路に設けられた吸気温センサにより検出された吸気温を用いて外気が低温域であるか否かを判断し、前記冷媒温度検出部の出力値が、断線時に該冷媒温度検出部から出力される断線時出力範囲に含まれるか否かを判断し、外気が低温域ではないと判断し、且つ前記冷媒温度検出部の出力値が前記断線時出力範囲に含まれる場合、前記冷媒温度検出部に断線が発生したと判定し、外気が低温域であると判断した際に、断線の判定を中止する。
この態様によれば、吸気温センサにより検出された吸気温を用いて外気が低温域であるか否かを判断する。このため、異常診断用の外気温センサを新たに設けなくても、吸気温センサを有効利用して外気温を検出できる。また、吸気温センサの出力値が用いられるタイミングは、エンジンからの熱の影響が排除され、吸気温を外気温とほぼ同一にすることができる吸入空気量が確保できたときに限られる。従って、外気温を精度よく検出できるため、冷却装置に対する異常判定の誤りを抑制することができる。また、温度低下に伴い抵抗が増大する冷媒温度検出部に対し、外気温が低温域ではなく、且つ冷媒温度検出部の出力値が断線時出力範囲に含まれる場合、断線が発生したと判定し、低温域では断線の有無を判定しない。このため、断線が発生していないにも関わらず、低温時の出力値のみで断線が発生したと誤って判定することを抑制することができる。また、吸入空気量が一定の量以上確保された状態で検出された吸気温を用いることによって、実際の外気が低温域である場合に、低温域ではないと誤って判断することが防止されるため、断線が発生していない場合にも関わらず断線が発生したと誤って判定することが抑制される。
以下、車載用電力制御装置の冷却システム及びその異常診断方法の第1実施形態について、図1〜図5を参照して説明する。
(1)第1実施形態によれば、ECU15は、吸気温センサ36により検出された吸気温Tintを用いて外気が低温域であるか否かを判断する。このため、異常診断用の外気温センサを新たに設けなくても、吸気温センサ36を有効利用して外気温を検出できる。また、吸気温センサ36の出力値が用いられるタイミングは、エンジン1からの熱の影響が排除され、吸気温を外気温とほぼ同一にすることができる吸入空気量が確保できたときに限られる。従って、外気温を精度よく検出できるため、冷却装置に対する異常判定の誤りを抑制することができる。
(第2実施形態)
(4)第2実施形態によれば、吸気温センサ36から入力した吸気温Tintに対して、電池温度センサ31から入力した電池温度Tbが小さく、吸気温Tintと電池温度Tbとの差が所定値ΔT以上である場合に、電池モジュール12が異常冷却されていると判定する。このため、電池モジュール12が凍結した状態等の異常冷却を検出することができる。また、走行状態に検出した吸気温Tintを用いることによって、実際の外気が低温域であっても、低温域ではないと誤って判断することが防止される。従って、実際の外気温に対して高い値の吸気温Tintに基づいて、電池モジュール12の異常冷却が発生していると判定してしまうことを抑制することができる。
・第1実施形態では、診断対象を水温センサ32にしたが、温度が低下するに伴い抵抗が増大するセンサであれば、例えば電池温度センサ31等、他のセンサを診断対象にしてもよい。
・ハイブリッド自動車は、パラレル方式以外の構成でもよく、シリーズ方式、動力分割方式の構成でもよく、特に限定されない。
Claims (4)
- エンジンと回転電機とが搭載されたハイブリッド自動車の電力制御装置を冷却する冷却装置と、
前記冷却装置を制御する電子制御装置とを備え、
前記冷却装置は、冷媒が循環する冷媒循環流路と、前記冷媒循環流路に設けられ、温度の低下に伴い抵抗が増大する冷媒温度検出部とを有し、
前記電子制御装置は、
前記エンジンの吸入空気量が一定の量以上確保された状態であるか否かを判断し、
前記吸入空気量が一定の量以上確保された状態であると判断した際に、前記エンジンの吸気通路に設けられた吸気温センサにより検出された吸気温を用いて外気が低温域であるか否かを判断し、
前記冷媒温度検出部の出力値が、断線時に該冷媒温度検出部から出力される断線時出力範囲に含まれるか否かを判断し、
外気が低温域ではないと判断し、且つ前記冷媒温度検出部の出力値が前記断線時出力範囲に含まれる場合、前記冷媒温度検出部に断線が発生したと判定し、
外気が低温域であると判断した際に、断線の判定を中止する車載用電力制御装置の冷却システム。 - 前記電子制御装置は、
車速センサから車速を入力し、
自車両の走行モードに応じて、一定の吸入空気量が確保可能な基準速度及び走行継続時間を設定し、
前記車速が前記基準速度以上である状態が、一定の期間継続された場合に前記吸入空気量が一定の量以上確保された状態であると判断して前記吸気温を異常診断に用いる請求項1に記載の車載用電力制御装置の冷却システム。 - 前記電力制御装置は、前記回転電機の交流側に接続されるインバータと、前記インバータの直流側に接続される電池とを備え、
前記冷媒循環流路は、前記インバータを冷却する冷媒が循環する流路であって、
前記冷却装置は、前記冷媒を冷却するラジエータを備え、
前記電子制御装置は、自車両が前記吸入空気量が一定の量以上確保された状態であると判断した際に前記吸気温センサが検出した吸気温を用いて外気が低温域であるかを判断する請求項1又は2に記載の車載用電力制御装置の冷却システム。 - エンジンと回転電機とが搭載されたハイブリッド自動車の電力制御装置を冷却する冷却装置に対する異常診断方法であって、
前記冷却装置は、冷媒が循環する冷媒循環流路と、前記冷媒循環流路に設けられ、温度の低下に伴い抵抗が増大する冷媒温度検出部とを有し、
前記冷却装置を制御する電子制御装置が、
自車両が前記エンジンの吸入空気量が一定の量以上確保された状態であるか否かを
判断し、
前記吸入空気量が一定の量以上確保された状態でないと判断した際に、前記冷却装置の異常の有無の判定を中止するとともに、
前記吸入空気量が一定の量以上確保された状態であると判断した際に、前記エンジンの吸気通路に設けられた吸気温センサにより検出された吸気温を用いて外気が低温域であるか否かを判断し、
前記冷媒温度検出部の出力値が、断線時に該冷媒温度検出部から出力される断線時出力範囲に含まれるか否かを判断し、
外気が低温域ではないと判断し、且つ前記冷媒温度検出部の出力値が前記断線時出力範囲に含まれる場合、前記冷媒温度検出部に断線が発生したと判定し、
外気が低温域であると判断した際に、断線の判定を中止する異常診断方法。
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CN201380052393.4A CN104755340B (zh) | 2012-10-12 | 2013-10-08 | 车载用电力控制装置的冷却系统及异常诊断方法 |
US14/433,832 US9381913B2 (en) | 2012-10-12 | 2013-10-08 | System for cooling vehicle-mounted power control device and method for diagnosing abnormality |
EP13844999.6A EP2907713B1 (en) | 2012-10-12 | 2013-10-08 | System for cooling vehicle-mounted power control device and method for diagnosing abnormality |
PCT/JP2013/077292 WO2014057917A1 (ja) | 2012-10-12 | 2013-10-08 | 車載用電力制御装置の冷却システム及び異常診断方法 |
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JP2016132417A (ja) * | 2015-01-22 | 2016-07-25 | 日野自動車株式会社 | ハイブリッド車両のバッテリ冷却構造 |
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US9381913B2 (en) | 2016-07-05 |
EP2907713A4 (en) | 2016-11-02 |
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