Electrical appliance with battery protection
US7619391B2 · kind B2 · utility
15Cited by
2References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 20, 2006 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Nov 2, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F5/00
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An electrical appliance, such as a power tool, has an electrical motor, a control circuit connected to the motor, and a rechargeable LI-ion battery pack for powering the motor via the control circuit. A battery protection circuit has a detection circuit for detecting an adverse operating condition of the battery pack and then providing a disabling signal indicative of that condition. Also included is an interface circuit provided between the battery circuit and the control circuit for sending said disabling signal to the control circuit to switch off the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.