Battery charger with charging reminding capability
US8084989B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 20, 2009 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Nov 18, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery charger includes a rechargeable battery for providing electric power to an external rechargeable battery through a damper unit so as to charge the external rechargeable battery, and a control unit coupled to a charging socket and the rechargeable battery and operable to charge the rechargeable battery through a charging signal received by the charging socket. An alarm unit is coupled to the rechargeable battery and the charging socket for generating a detecting signal based on a battery voltage of the rechargeable battery, for outputting a reminder output upon detecting that a potential of the detecting signal is less than that of a reference signal, and for terminating the reminder output when the charging socket receives the charging signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.