JP2010004631A5 - - Google Patents
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- Publication number
- JP2010004631A5 JP2010004631A5 JP2008160156A JP2008160156A JP2010004631A5 JP 2010004631 A5 JP2010004631 A5 JP 2010004631A5 JP 2008160156 A JP2008160156 A JP 2008160156A JP 2008160156 A JP2008160156 A JP 2008160156A JP 2010004631 A5 JP2010004631 A5 JP 2010004631A5
- Authority
- JP
- Japan
- Prior art keywords
- ground fault
- fuel cell
- electric vehicle
- drive circuit
- idle stop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 239000000446 fuel Substances 0.000 claims 16
- 238000001514 detection method Methods 0.000 claims 10
- 238000009413 insulation Methods 0.000 claims 7
- 239000003990 capacitor Substances 0.000 claims 2
Claims (7)
前記燃料電池に駆動回路を介して接続され、車輪を回転させる電動機と、
前記燃料電池と前記駆動回路との間の地絡を検知する地絡検知装置と、
前記燃料電池、前記駆動回路及び前記電動機を制御する制御部と、
を備える電気車両において、
前記地絡検知装置は、前記地絡の発生箇所と接地との間の絶縁抵抗を算出し、算出した前記絶縁抵抗がアイドル停止禁止閾値よりも低ければ、前記燃料電池のアイドル停止を禁止する
ことを特徴とする電気車両。 A fuel cell;
An electric motor connected to the fuel cell via a drive circuit and rotating a wheel;
A ground fault detection device for detecting a ground fault between the fuel cell and the drive circuit;
A control unit for controlling the fuel cell, the drive circuit and the electric motor;
In an electric vehicle comprising:
The ground fault detector, the insulating resistance was calculated between the ground and the occurrence position of the ground fault, calculated the insulation resistance is lower than the idle stop prohibition threshold, inhibits the idle stop of the previous SL fuel cell An electric vehicle characterized by that.
前記地絡検知装置は、前記絶縁抵抗が前記アイドル停止禁止閾値よりも低いことを示す検出結果を前記制御部に出力し、The ground fault detection device outputs a detection result indicating that the insulation resistance is lower than the idle stop prohibition threshold to the control unit,
前記制御部は、入力された前記検出結果に基づいて前記燃料電池のアイドル停止を禁止するThe control unit prohibits the fuel cell from being idled based on the input detection result.
ことを特徴とする電気車両。An electric vehicle characterized by that.
前記制御部は、前記検出結果に基づいて、前記燃料電池が運転されている状態から、前記アイドル停止への移行を禁止する
ことを特徴とする電気車両。 The electric vehicle according to claim 2 ,
The control unit prohibits transition from the state in which the fuel cell is operated to the idle stop based on the detection result.
前記制御部は、前記検出結果に基づいて、前記アイドル停止を解除し、前記燃料電池の運転を開始する
ことを特徴とする電気車両。 The electric vehicle according to claim 2 ,
The control unit releases the idle stop and starts operation of the fuel cell based on the detection result.
前記地絡検知装置は、
前記燃料電池に並列に接続された、抵抗器及びコンデンサの直列回路と、
前記コンデンサの充電電圧を計測し、計測した前記充電電圧に基づいて前記地絡の発生を検知する地絡検知部と、
を有し、
前記地絡検知部は、
前記地絡が発生していないときの充電電圧（以下、第１充電電圧という。）を予め計測し、
前記地絡が発生したときの充電電圧（以下、第２充電電圧という。）を計測し、
前記第１充電電圧と前記第２充電電圧との比率に基づいて前記絶縁抵抗を算出し、算出した前記絶縁抵抗が前記アイドル停止禁止閾値よりも低い場合に、前記検出結果を前記制御部に出力し、
前記アイドル停止禁止閾値より低く設定された地絡確定閾値よりも前記絶縁抵抗が低い場合に、前記地絡の発生を前記制御部に通知する
ことを特徴とする電気車両。 In the electric vehicle according to any one of claims 2 to 4 ,
The ground fault detection device is
A series circuit of a resistor and a capacitor connected in parallel to the fuel cell;
A ground fault detector that measures the charging voltage of the capacitor and detects the occurrence of the ground fault based on the measured charging voltage;
Have
The ground fault detector is
A charging voltage when the ground fault has not occurred (hereinafter referred to as a first charging voltage) is measured in advance,
Measure the charging voltage (hereinafter referred to as the second charging voltage) when the ground fault occurs,
The insulation resistance is calculated based on a ratio between the first charging voltage and the second charging voltage, and when the calculated insulation resistance is lower than the idle stop prohibiting threshold, the detection result is output to the control unit. And
The electric vehicle characterized by notifying the controller of the occurrence of the ground fault when the insulation resistance is lower than a ground fault determination threshold set lower than the idle stop prohibition threshold.
前記燃料電池と前記駆動回路との間には、前記燃料電池から前記駆動回路を介して前記電動機に電力を供給するためのダイオードが配置され、
前記駆動回路には、前記制御部により制御されるＤＣ／ＤＣコンバータを介して蓄電装置が、前記ダイオード及び前記燃料電池に対して並列に接続され、
前記地絡検知装置は、前記燃料電池と前記ダイオードとの間に接続されるか、あるいは、前記ダイオードと前記駆動回路との間に接続される
ことを特徴とする電気車両。 The electric vehicle according to any one of claims 2 to 5 ,
Between the fuel cell and the drive circuit, a diode for supplying electric power from the fuel cell to the electric motor via the drive circuit is disposed,
In the drive circuit, a power storage device is connected in parallel to the diode and the fuel cell via a DC / DC converter controlled by the controller.
The electric vehicle characterized in that the ground fault detection device is connected between the fuel cell and the diode, or connected between the diode and the drive circuit.
前記地絡の発生箇所と接地との間の絶縁抵抗を算出し、算出した前記絶縁抵抗がアイドル停止禁止閾値よりも低ければ、前記燃料電池のアイドル停止を禁止する
ことを特徴とする電気車両での地絡検出方法。 In an electric vehicle in which an electric motor that rotates a wheel is connected to a fuel cell via a drive circuit, when detecting a ground fault between the fuel cell and the drive circuit,
An electric vehicle that calculates an insulation resistance between the occurrence point of the ground fault and grounding, and prohibits idle stop of the fuel cell if the calculated insulation resistance is lower than an idle stop prohibition threshold. Ground fault detection method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008160156A JP5207843B2 (en) | 2008-06-19 | 2008-06-19 | Electric vehicle and ground fault detection method in electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008160156A JP5207843B2 (en) | 2008-06-19 | 2008-06-19 | Electric vehicle and ground fault detection method in electric vehicle |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2010004631A JP2010004631A (en) | 2010-01-07 |
| JP2010004631A5 true JP2010004631A5 (en) | 2010-11-18 |
| JP5207843B2 JP5207843B2 (en) | 2013-06-12 |
Family
ID=41585866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008160156A Expired - Fee Related JP5207843B2 (en) | 2008-06-19 | 2008-06-19 | Electric vehicle and ground fault detection method in electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5207843B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101869914B1 (en) * | 2016-04-20 | 2018-07-20 | 현대자동차주식회사 | Fuel cell vehicle and insulation resistance measuring method thereof |
| DE102018205165A1 (en) * | 2018-04-06 | 2019-10-10 | Audi Ag | HV system for a fuel cell vehicle |
| CN114379369A (en) * | 2022-01-29 | 2022-04-22 | 重庆长安新能源汽车科技有限公司 | Method and system for judging electric vehicle fault authenticity based on national standard data and vehicle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0215569A (en) * | 1988-07-04 | 1990-01-19 | Fuji Electric Co Ltd | Grounding detection circuit of fuel cell |
| JP3962990B2 (en) * | 2002-11-18 | 2007-08-22 | 矢崎総業株式会社 | Insulation detector for ungrounded power supply |
| JP4534604B2 (en) * | 2004-06-01 | 2010-09-01 | 日産自動車株式会社 | Ground fault detection device for fuel cell vehicles |
| JP2006134647A (en) * | 2004-11-04 | 2006-05-25 | Nissan Motor Co Ltd | Fuel cell system |
| JP2007300753A (en) * | 2006-05-01 | 2007-11-15 | Nissan Motor Co Ltd | System for detecting insulation resistance |
| JP2008004482A (en) * | 2006-06-26 | 2008-01-10 | Nissan Motor Co Ltd | Fuel cell system |
-
2008
- 2008-06-19 JP JP2008160156A patent/JP5207843B2/en not_active Expired - Fee Related
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