Extended duration power supply
US9214681B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2009 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | May 5, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2200/108
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention concerns a power supply (10) comprising a primary cell (11) adapted to provide a primary cell current. The primary cell (11) comprises an anode, a cathode current collector and an electrolyte, whereby a passivation layer is formed on a surface of the anode as a result of a chemical reaction between the anode and the electrolyte. To ensure that the passivation layer remains essentially intact for the lifetime of the primary cell, the power supply (10) further comprises a current limiter (12) that is configured to prevent the magnitude of the primary cell current exceeding a value that would damage the passivation layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.