Patent · US Active

Fuel cell stacks with increased natural frequency

US9876249B2 · kind B2 · utility

0Cited by

7References

14Claims

0Family size

Assignees

Daimler AG · DE
Ford Motor Company · US

Inventors

Jochen Sang · Tauberbischofsheim, DE
Rae Hartwell · Surrey, CA

Key dates

Filing date	Oct 16, 2014
Grant date	Jan 23, 2018
Priority date	—
Expiry date	Mar 7, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T90/40
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

In certain configurations and applications, fuel cell stacks can be subject to damage arising from resonance. For instance, the natural frequency of lengthy automotive fuel cell stacks can be low enough to be problematic. Incorporating appropriate support bars between the compression straps holding such stacks together and the fuel cells in the stack can suitably increase the natural frequency in a relatively compact manner.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.