Battery state monitoring circuit and battery device
US8410757B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2010 |
| Grant date | Apr 2, 2013 |
| Priority date | — |
| Expiry date | Oct 8, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided are a battery state monitoring circuit capable of detecting disconnection of a battery from a power supply terminal or a ground terminal, and a battery device including the battery state monitoring circuit. The battery state monitoring circuit includes voltage detection circuits provided between the power supply terminal and an intermediate terminal and between the intermediate terminal and another intermediate terminal. For example, if a battery (21) is disconnected from a power supply terminal (11), the power supply terminal (11) is pulled down by a constant current circuit (15) to a voltage of a second intermediate terminal (13) so that a voltage detection circuit (34) detects the disconnection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.