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Fuel Cell Test Bench for LT-PEM Stacks up to 5 kW

The fuel cell test bench is designed for the operation of LT-PEM stacks with a power output of up to 5 kW and meets defined minimum requirements regarding size, functionality, and safety.

The maximum dimensions are 250 cm × 180 cm × 240 cm.

It features comprehensive gas, pressure, and temperature control with precise humidification, a cooling circuit, an electronic load, and PLC-based safety and control systems. A CVM system for monitoring the stack is integrated to measure at least 30 individual cell voltages.

The process gases (H₂, N₂, air) are supplied via mass flow controllers with shut-off valves and piping for operating pressures up to 7 bar(a) and flow rates between 2 and 200 nl/min. The anode and cathode have separate, adjustable pressure control (0–3 bar(g)).

An electronic load with CV, CC, CP, and CR control modes enables flexible load testing.

Gas humidifiers with precise dew point control (± 2 °C) and gas trace heating up to 130 °C ensure defined gas conditions.

The exhaust gas discharge is ATEX-compliant.

The integrated cooling circuit allows for both cooling and heating of the test specimen.

Additionally, analog inputs and outputs (4–20 mA, 0–10 V) are available. Control is handled via a control cabinet with a PLC and safety PLC, programmable in a high-level programming language (Admiral software), and enables the integration of third-party systems via interfaces such as Python.

All gas and cooling circuits are comprehensively equipped with temperature, pressure, and conductivity sensors.

Complete documentation and a high-performance test bench computer running Windows 11 round out the system.

Key Features

Designed for LT-PEM stacks up to 5 kW

Compact dimensions: max. 250 × 180 × 240 cm

CVM system for monitoring at least 30 individual cell voltages

Mass flow controllers with shut-off valves for H₂, N₂, and air

Operating pressure up to 7 bar(g); flow rates 2–200 nl/min

Separate adjustable pressure control for anode and cathode (0–3 bar(g))

Electronic load with CV, CC, CP, and CR modes

ATEX-compliant exhaust gas discharge

Integrated cooling circuit for heating and cooling

PLC- and safety PLC-based control system (Admiral software)

Hydrogen safety sensors in the test chamber

Fully instrumented gas and cooling circuits (temperature, pressure, conductivity)

Fuel Cell Test Bench for LT-PEM Stacks

Fuel Cell Test Bench for LT-PEM Stacks up to 5 kW

Key Features

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