Fuel cell module

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent describes an improved fuel cell module design, particularly suited for solid oxide fuel cells (SOFCs). The core innovation lies in the geometric layout and material composition of the stackable bipolar plates (interconnectors) that guide fuel and air, while minimizing thermal stresses that can reduce cell lifespan. The plates feature specifically dimensioned and shaped gas inlets/outlets to optimize gas flow, are manufactured from a special high-alloy ferritic steel (Jülicher steel JS3), and incorporate advanced surface coatings for enhanced performance and durability.

Use CasesContent extracted from patent full text and abstract with AI.

• Electricity generation in stationary power plants using fuel cells
• Portable or backup power systems requiring long-life, efficient fuel cells
• Power sources for electric vehicles, especially those utilizing SOFC technology
• Distributed energy systems or microgrids relying on high-efficiency fuel cells
• Industrial combined heat and power (CHP) systems utilizing high-temperature fuel cells

BenefitsContent extracted from patent full text and abstract with AI.

• Significantly extended lifespan of fuel cells due to reduced thermal stress and improved thermal cycling capability
• Enhanced efficiency of fuel cells by optimized gas flow and better heat distribution within the stack
• Lower manufacturing costs and increased scalability through the use of steel interconnectors and automated fabrication methods
• Improved electrical contact and corrosion resistance thanks to specific material choices and surface coatings
• Suitability for a wide range of operating temperatures and adaptable to various fuel types, providing high application flexibility

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The module has bipolar plates stacked above one another and integrated into an interconnector. Breadth of one of the plates comprises a bar between an air inlet aperture and a combustible gas outlet port, where breadth (A1) of the bar ranges from 6 percent of the plate breadth, a half width (D1) and height (F1 1) of the outlet port amounts to 10 percent and 7 percent of the plate breadth respectively. The air inlet aperture, air outlet aperture, combustible gas entry port and a combustible gas outlet port are formed in arc shaped sections. The plates are made of highly alloyed ferritic steel. An electric contact between the bipolar plates takes place under use of a metal that forms a biphasic layer on a surface area, which consists of a chromium manganese spinel on a chromium oxide interlayer, where the metal comprises Jlicher steel (JS3) as main component.