Charger protection circuitry for a rechargeable battery
US8305046B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2009 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Sep 21, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/14
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The present invention provides charger protection circuitry for a rechargeable battery, and a method of protecting a charger cable during charging of a rechargeable battery. A switch controller is used to turn a switch element on and off in dependence on a direction of current flow through the charger protection circuitry during charging and otherwise. If current is flowing in the first direction the switch controller turns on the switch element such that the auxiliary current tripping element is bypassed, whereby the main current tripping element controls interruption of current flow. If instead current is flowing in a second direction opposite to the first direction, the switch controller turns off the switch element, whereby the auxiliary current tripping element is connected into the current flow path to control interruption of current flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.