Electrochemical fuel cell, process for maintaining an electrochemical fuel cell and breath alcohol measuring device

US12216078B2 · kind B2 · utility

Assignee

• DRÄGER SAFETY AG & CO. KGAA · DE

Inventors

• Stephan Haupt · Lübeck, DE
• Andreas Nauber · Wulfen, DE
• Michael Sick · Timmendorfer Strand, DE
• Marie-Isabell Mattern-Frühwald · Bargteheide, DE
• Susanne KASSA · Lübeck, DE

Key dates

• Filing date: May 4, 2020
• Grant date: Feb 4, 2025
• Expiry date: Dec 8, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/50
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An electrochemical fuel cell measures ethanol in human breath and a process maintains such an electrochemical fuel cell. The electrochemical fuel cell includes a first electrode (1), a second electrode (2) and a third electrode (3). The first electrode (1) is used as a measuring electrode in a regular operating mode of the electrochemical fuel cell and as a measuring electrode or as a reference electrode in a maintenance mode of the electrochemical fuel cell. The second electrode (2) is used as a counter electrode in the regular operating mode of the electrochemical fuel cell and as a measuring electrode or as a reference electrode in the maintenance mode of the electrochemical fuel cell. The third electrode (3) is used as a counter electrode in the maintenance mode of the electrochemical fuel cell.