Patent ID: 11862826
Assignee: AUDI AG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 3:
4. The method according to claim 1, wherein the fuel cell stack has a plurality of tensioning elements clamped in the stacking direction between the end plates, the method further comprising:
determining a tensile force acting on the vibratable section of each of the tensioning elements on the basis of a respective determined fundamental frequency, a respective length of the vibratable section, and a respective linear mass distribution of the tensioning element; and
determining the compressive tensile force acting on the fuel cell stack as the sum of the tensile forces determined for each vibratable section or determining the compressive tensile force distribution acting on the fuel cell stack on the basis of the tensile forces determined for each vibratable section.