MEDIUM CONVERSION DEVICE AND METHOD FOR DETECTING FUEL CONTENT IN A MULTIPLE FUEL CELL SYSTEM - Patent application

The medium combining device centralizes hydrogen leak detection and dilution across multiple fuel cell systems, reducing sensor costs and enhancing safety by merging all exhaust and purge pipes into a single container with integrated sensors, addressing the inefficiencies of multiple sensor systems.

JP7725716B2Active Publication Date: 2025-08-19ROBERT BOSCH GMBH
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Patent Information

Application Number
JP2024513280
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-09-09
Filing Date
2022-08-02
Publication Date
2025-08-19
Estimated Expiration
2042-08-02

AI Technical Summary

Technical Problem

Fuel cell systems face challenges in detecting hydrogen leaks due to the high cost of multiple sensors and the need for ventilation systems to prevent explosive mixtures, especially in confined spaces, and existing solutions are inefficient and require multiple sensors for each fuel cell system.

Method used

A medium combining device that integrates multiple fuel cell systems, using one or two hydrogen sensors to detect and dilute hydrogen leaks by merging all exhaust, purge, and drain pipes into a single container for centralized detection and dilution, allowing for redundancy and efficient leak diagnosis.

Benefits of technology

Reduces the number of hydrogen sensors needed, enhances leak detection efficiency, and minimizes the risk of explosive mixtures by centralizing detection and dilution, while maintaining safety and reducing operational costs.

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Abstract

The invention relates to a particularly only one, preferably common, medium merging device (M) for several fuel cell systems (101, 102, 103), having a container (MB) for mixing and / or checking the medium flows, in which the following components are arranged: - one pipe connection (M1) respectively for each air discharge pipe (12) for discharging exhaust air from the fuel cell system (101, 102, 103) in question, - one pipe connection (MQ1) respectively for each purge and / or drain pipe (L1) of the corresponding purge and / or drain system (Q1) of the anode system of the fuel cell system (101, 102, 103) in question, - one and only one pipe outlet (M2) respectively for discharging the medium flow from the container (MB), - at least one fuel sensor (S) for detecting the fuel content in the container (MB).
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Citation Information

Patent Citations

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    EP3047533B1

  • Make-up water recovering device for fuel cell power generation device

    JP1993082147A

  • Exhaust gas treatment device of fuel battery

    JP2004127749A

  • Fuel cell power generation system

    JP2004164930A

  • Fuel cell power generation system

    JP2004192952A