JP5713030B2 - 電動車両および電動車両の絶縁状態判定方法 - Google Patents
電動車両および電動車両の絶縁状態判定方法 Download PDFInfo
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Description
Claims (5)
- 駆動力を発生する電気システムと、
前記電気システムの絶縁異常を検出するための検出器とを備え、
前記電気システムは、
蓄電装置と、
前記蓄電装置の電力を用いて駆動力を発生する駆動装置と、
前記蓄電装置の正極と前記駆動装置との間に設けられる第1のリレーと、
前記蓄電装置の負極と前記駆動装置との間に設けられる第2のリレーとを含み、
前記検出器は、前記蓄電装置に電気的に接続され、さらに
前記第1および第2のリレーが開放されるときの前記検出器の検出結果と、その後前記第1および第2のリレーのいずれかが閉成されるときの前記検出器の検出結果とに基づいて、前記電気システムの絶縁状態を判定する制御装置を備え、
前記第1および第2のリレーが開放されることによって前記検出器の検出結果が異常から正常に変化し、かつ、その後前記第1および第2のリレーのいずれかが閉成されても前記検出器の検出結果が正常を示すとき、前記制御装置は、前記電気システムの絶縁状態は不定であると判定する、電動車両。 - 前記第1および第2のリレーが開放されることによって前記検出器の検出結果が異常から正常に変化し、かつ、その後前記第1および第2のリレーのいずれかが閉成されることによって前記検出器の検出結果が異常を示すとき、前記制御装置は、前記駆動装置の絶縁抵抗が低下しているものと判定する、請求項1に記載の電動車両。
- 前記第1および第2のリレーの開放時に前記検出器の検出結果が異常を示すとき、前記制御装置は、前記蓄電装置の絶縁抵抗が低下しているものと判定する、請求項1または2に記載の電動車両。
- 前記検出器は、
抵抗素子と、
前記抵抗素子と車両アースとの間に電気的に接続され、所定の周波数を有する交流電圧を発生する交流電源と、
前記抵抗素子と前記蓄電装置との間に電気的に接続される容量素子と、
前記抵抗素子と前記容量素子との間の電力線における、前記所定の周波数を有する電圧成分を検出する電圧検出部とを含む、請求項1に記載の電動車両。 - 電動車両の絶縁状態判定方法であって、
前記電動車両は、
駆動力を発生する電気システムと、
前記電気システムの絶縁異常を検出するための検出器とを含み、
前記電気システムは、
蓄電装置と、
前記蓄電装置の電力を用いて駆動力を発生する駆動装置と、
前記蓄電装置の正極と前記駆動装置との間に設けられる第1のリレーと、
前記蓄電装置の負極と前記駆動装置との間に設けられる第2のリレーとを含み、
前記検出器は、前記蓄電装置に電気的に接続され、
前記絶縁状態判定方法は、
前記第1および第2のリレーを開放するステップと、
前記第1および第2のリレーの開放後に前記第1および第2のリレーのいずれかを閉成するステップと、
前記第1および第2のリレーが開放されるときの前記検出器の検出結果と、前記第1および第2のリレーのいずれかが閉成されるときの前記検出器の検出結果とに基づいて、前記電気システムの絶縁状態を判定するステップとを含み、
前記判定するステップは、前記第1および第2のリレーが開放されることによって前記検出器の検出結果が異常から正常に変化し、かつ、その後前記第1および第2のリレーのいずれかが閉成されても前記検出器の検出結果が正常を示すとき、前記電気システムの絶縁状態は不定であると判定するステップを含む、電動車両の絶縁状態判定方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2013004568A JP5713030B2 (ja) | 2013-01-15 | 2013-01-15 | 電動車両および電動車両の絶縁状態判定方法 |
US14/153,274 US9724998B2 (en) | 2013-01-15 | 2014-01-13 | Electric vehicle and insulation state determination method for electric vehicle |
CN201410014152.7A CN103921684A (zh) | 2013-01-15 | 2014-01-13 | 电动车辆和用于电动车辆的绝缘状态判定方法 |
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JP2013004568A JP5713030B2 (ja) | 2013-01-15 | 2013-01-15 | 電動車両および電動車両の絶縁状態判定方法 |
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JP2014138443A JP2014138443A (ja) | 2014-07-28 |
JP5713030B2 true JP5713030B2 (ja) | 2015-05-07 |
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