Battery pack, electrical device connectable to battery pack, and method of identifying battery pack type
US7486045B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2004 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Jul 8, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery pack has a rechargeable battery, a pair of externally exposed charge/discharge terminals connected to the electrodes of the rechargeable battery, and an externally exposed battery pack signal terminal for identifying the type of the battery pack. The battery pack further has a battery pack communication portion connected to the battery pack signal terminal for receiving an authenticity signal transmitted from an electrical equipment unit through the battery pack signal terminal; a random number generating portion for generating a random number based on a predetermined condition; and a battery pack control portion for generating a detection signal based on the authenticity signal received by the battery pack communication portion and the random number generated by the random number generating portion, and for transmitting the detection signal from the battery pack communication portion to the electrical equipment unit side through the battery pack signal terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.