JP2016001587A - 燃料電池スタックの状態診断方法および燃料電池システムの制御方法 - Google Patents
燃料電池スタックの状態診断方法および燃料電池システムの制御方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000010926 purge Methods 0.000 claims description 61
- 239000001257 hydrogen Substances 0.000 claims description 44
- 229910052739 hydrogen Inorganic materials 0.000 claims description 44
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000003745 diagnosis Methods 0.000 claims description 12
- 230000003247 decreasing effect Effects 0.000 claims description 6
- 150000002431 hydrogen Chemical class 0.000 claims description 6
- 230000001131 transforming effect Effects 0.000 claims description 2
- 230000006870 function Effects 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 230000007423 decrease Effects 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
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- -1 hydrogen ions Chemical class 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
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Abstract
Description
20 第2周波数のインピーダンスの虚数部
30 パージ化器
40 パージ推論装置
45 ルールベース
50 非パージ化器
Claims (11)
- 燃料電池スタックに、第1周波数と第2周波数を有する電流を同時に印加する段階と、
前記印加された電流に応じて、前記燃料電池スタックから出力される電流と電圧をフーリエ変換する段階と、
前記変換された出力電流および電圧のうち、前記第1周波数および前記第2周波数の電圧と電流の振幅および位相を用いて第1周波数のインピーダンスの実数部と第2周波数のインピーダンスの虚数部を演算する段階と、
前記演算された第1周波数のインピーダンスおよび第2周波数のインピーダンスの大きさに応じて前記燃料電池スタックの状態を診断する段階とを含んでなり、
前記第1周波数は前記第2周波数より高いことを特徴とする、燃料電池スタックの状態診断方法。 - 前記第1周波数が100Hz以上であり、前記第2周波数が1Hz〜100Hzであることを特徴とする、請求項1に記載の燃料電池スタックの状態診断方法。
- 前記燃料電池スタックの状態を診断する段階は、
前記第1周波数のインピーダンスの実数部の大きさと前記第2周波数のインピーダンスの虚数部の大きさに対応して既にマッピングされた燃料電池スタックの状態マップに基づいて、前記演算された実数部および虚数部の大きさに応じて前記燃料電池スタックの状態を診断する段階を含むことを特徴とする、請求項1に記載の燃料電池スタックの状態診断方法。 - 前記燃料電池スタックの状態マップは、
前記第1周波数のインピーダンスの実数部の大きさと前記第2周波数のインピーダンスの虚数部の大きさを複数の所定の境界値によって複数の段階に分類し、分類された段階と前記燃料電池スタック内の水分含量との関係が既にマッピングされた状態マップであることを特徴とする、請求項3に記載の燃料電池スタックの状態診断方法。 - 前記燃料電池スタックの状態を診断する段階は、
前記演算された実数部および虚数部の大きさが前記分類された段階のうちどの段階に属するかによって前記燃料電池スタックの水分含量を判断する段階をさらに含むことを特徴とする、請求項4に記載の燃料電池スタックの状態診断方法。 - 前記燃料電池スタックの状態を診断する段階は、
前記第1周波数のインピーダンスの実数部の大きさと前記第2周波数のインピーダンスの虚数部の大きさに対応して、パージロジックが実現されたパージロジック診断器の出力を用いて前記燃料電池スタックの状態を診断する段階を含むことを特徴とする、請求項1に記載の燃料電池スタックの状態診断方法。 - 前記パージロジック診断器の出力は前記第1周波数のインピーダンスの実数部の大きさと前記第2周波数のインピーダンスの虚数部の大きさによって決定され、前記パージロジック診断器の出力は所定の境界値によって複数の段階に分類されることを特徴とする、請求項6に記載の燃料電池スタックの状態診断方法。
- 前記燃料電池スタックの状態を診断する段階は、
前記分類された複数の段階のうちどの段階に属するかによって前記燃料電池スタックの水分含量を判断する段階を含むことを特徴とする、請求項7に記載の燃料電池スタックの状態診断方法。 - 前記判断された燃料電池スタックの水分含量の程度によって前記燃料電池スタックの状態を複数の段階に分類する段階をさらに含むことを特徴とする、請求項5または8に記載の燃料電池スタックの状態診断方法。
- 前記分類された段階のうちどの段階に属するかによって、前記燃料電池スタックの空気流量、空気圧力、水素流量、水素圧力および水素排出量を含む複数の因子を可変させる段階をさらに含むことを特徴とする、請求項9に記載の燃料電池スタックの状態診断方法。
- 前記複数の段階は、所定の境界値によって前記水分含量の高い順に分類された第1段階〜第5段階を含み、
前記複数の因子を可変させる段階は、
前記判断された燃料電池スタックの水分含量の程度が第1段階に属する場合、前記燃料電池スタックの空気流量、水素圧力、水素流量および水素排出量を増加させ、空気圧力は減少させ、
前記判断された燃料電池スタックの水分含量の程度が第2段階に属する場合、前記燃料電池スタックの水素流量を増加させ、空気流量を増加させ、
前記判断された燃料電池スタックの水分含量の程度が第4段階に属する場合、前記燃料電池スタックの空気流量および水素圧力を減少させ、
前記判断された燃料電池スタックの水分含量の程度が第5段階に属する場合、前記燃料電池スタックの水素流量および空気圧力を増加させ、空気流量および水素圧力を減少させることを特徴とする、請求項10に記載の燃料電池スタックの状態診断方法。
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US10218018B2 (en) * | 2016-05-03 | 2019-02-26 | GM Global Technology Operations LLC | Fuel cell stack health monitoring using groups of fuel cells |
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DE102018206505A1 (de) * | 2018-04-26 | 2019-10-31 | Bayerische Motoren Werke Aktiengesellschaft | Diagnoseverfahren und Diagnosesystem für eine elektrochemische Energiespeicherzelle |
KR20200129268A (ko) | 2019-05-08 | 2020-11-18 | 현대자동차주식회사 | 임피던스를 이용한 연료전지 차량의 물 제거 시스템 및 방법 |
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CN105226313B (zh) | 2019-06-07 |
US20150362560A1 (en) | 2015-12-17 |
CN105226313A (zh) | 2016-01-06 |
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