Overcurrent protection circuit and method for limiting discharge current of battery within safety limiting value
US10090689B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2013 |
| Grant date | Oct 2, 2018 |
| Priority date | — |
| Expiry date | Jun 10, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/007182
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An overcurrent protection circuit and method for battery discharge. The overcurrent protection circuit includes a discharge switch tube; a discharge control module which is used for detecting the discharge current of batteries in real time, and judging whether an overcurrent is generated by way of comparing the detected discharge current with a preset limiting value, the discharge control module controlling switch-on of the discharge switch tube if no overcurrent is generated, the discharge control module controlling switch-off of the discharge switch tube if an overcurrent is generated, and the discharge control module locking the discharge switch tube in a switch-off state when the overcurrent has timed out; and a time delay module which is used for judging whether the overcurrent has timed out by way of comparing the time when the overcurrent is generated with a preset delay time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.