FUEL CELL SYSTEM

To suppress the voltage of a cell from greatly decreasing.SOLUTION: A fuel cell system includes a fuel cell stack having a plurality of cells, a monitoring unit that monitors a voltage per cell in the fuel cell stack, a control unit that limits an output of the fuel cell when the monitoring unit det...

Full description

Saved in:
Bibliographic Details
Main Author USAMI SHO
Format Patent
LanguageEnglish
Japanese
Published 07.02.2019
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:To suppress the voltage of a cell from greatly decreasing.SOLUTION: A fuel cell system includes a fuel cell stack having a plurality of cells, a monitoring unit that monitors a voltage per cell in the fuel cell stack, a control unit that limits an output of the fuel cell when the monitoring unit detects that the voltage per cell has dropped to or below a predetermined current limit voltage, and the control unit detects a voltage decreasing speed at a predetermined threshold voltage when the voltage per cell decreases and sets the current upper limit value at the output limit of the fuel cell to a smaller value as the voltage decreasing speed increases.SELECTED DRAWING: Figure 2 【課題】セルの電圧が大きく低下することを抑制可能な技術を提供する。【解決手段】燃料電池システムは、複数のセルを有する燃料電池スタックと、燃料電池スタックにおけるセル当りの電圧を監視する監視部と、監視部がセル当りの電圧が予め定められた電流制限電圧以下に低下したことを検知した場合に、燃料電池の出力を制限する制御部と、を備え、制御部は、セル当りの電圧が低下する際の予め定められた閾値電圧にける電圧低下速度を検出し、電圧低下速度が大きいほど燃料電池の出力の制限における電流上限値を小さく設定する。【選択図】図2
Bibliography:Application Number: JP20170139568