Apparatus for preventing over-discharge
US11183859B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2019 |
| Grant date | Nov 23, 2021 |
| Priority date | — |
| Expiry date | Jul 19, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0031
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus for preventing over-discharge of a battery includes: a first switch between a battery cell and an output terminal; a second switch having one end and another end respectively electrically connected to one end of the first switch and to the output terminal; a current limiting resistor located between a first node located between the first switch and the second switch and a second node located between the second switch and the output terminal; a third switch having one end and another end respectively electrically connected to another end of the current limiting resistor and to the second node; and a processor to set a reference voltage by using at least one of a minimum operating voltage of the battery cell, a first drop voltage by the current limiting resistor and a second drop voltage by an internal resistor of the battery cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.