Battery protection integrated circuit applied to battery charging/discharging system and method for determining resistances of voltage divider of battery protection integrated circuit
US9871390B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 2, 2014 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | May 13, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00306
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery protection IC applied to a battery charging system is provided, where the battery charging system includes a charger and a switch, the switch is coupled between the charger and a battery when the battery is put into the battery charging system, and the battery protection IC includes a voltage divider, a comparator and a controller. The voltage divider is coupled to a first node of the switch, and is utilized for dividing a voltage of the first node to generate a divided voltage, whereat least one resistor of the voltage divider is formed by two different types of fuses. The comparator is utilized for comparing the voltage with a reference voltage to generate a comparison result. The controller is utilized for generating a control signal according to the comparison result, where the control signal is utilized for switching on or switching off the switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.