Battery pack and signal transmission system
US6650090B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Jun 6, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00309
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery pack BP having terminals T1, T2, and T3, a detecting circuit, a signal generating circuit, a temperature, voltage, and current detecting circuit, a switching circuit, and a secondary battery connected to the switching circuit. A first external signal generating unit may be connected to terminals T1 and T2 and a second external signal generating unit may be connected to terminals T2 and T3. The detecting circuit detects whether the first or second external signal generating units has been connected. In so doing, the detecting circuit may detect an impedance of the first external signal generating unit and may detect a terminal voltage of the second external signal generating unit. The on/off operations of the switching circuit SW may be controlled in accordance with the detection result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.