Supplemental battery overcharge protection device

Details Supplemental battery overcharge protection device Supplemental battery overcharge protection device

2000-05-25

2001-12-18

Wong, Peter S. (Department: 2838)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

Regulated discharging

C320S135000

Reexamination Certificate

active

06331764

ABSTRACT:

FIELD OF THE INVENTION
The present invention is directed to rechargeable batteries, such as lithium-ion or lithium-polymer rechargeable battery cells and other rechargeable battery chemistries, and more particularly to supplemental protection devices for overcharge protection circuits.
BACKGROUND OF THE INVENTION
Lithium-ion and lithium-polymer battery packs are used as a rechargeable energy source for many electronics applications, particularly consumer electronic device such as cellular mobile telephones. Lithium-based battery packs often require a switch device to protect the lithium cell or cells from overcharge. Current switch devices have limited capability for reliability under severe fault conditions that might occur as a result of a failed battery charger. If not mitigated, catastrophic failure of the lithium cells is possible.
What is needed is a circuit arrangement that provides supplemental protection for a switch device in an overcharge protection device, such as those used in rechargeable battery packs.


REFERENCES:
patent: 4649333 (1987-03-01), Moore
patent: 6002239 (1999-12-01), Maloizel

Affiliated with

Also associated with

Rating

Supplemental battery overcharge protection device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Supplemental battery overcharge protection device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Supplemental battery overcharge protection device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2587511