Shutdown and storage method for fuel cell system at below freezing temperatures
US10547067B2 · kind B2 · utility
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1References
19Claims
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Key dates
| Filing date | Aug 22, 2016 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | Aug 22, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Improved methods are disclosed for shutting down and storing a fuel cell system, particularly for below freezing temperature conditions. The methods comprise stopping power production from the fuel cell stack, monitoring its temperature, and repeatedly performing a predetermined warming operation if the stack temperature falls to a normal threshold temperature. In the improved methods, either an initial threshold temperature and/or an initial warming operation are used that differ from the respective normal threshold temperature and the predetermined warming operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.