Patent · US Expired

Charge/discharge protection circuit for a rechargeable battery

US6710992B2 · kind B2 · utility

15Cited by

4References

13Claims

0Family size

Assignee

DIALOG SEMICONDUCTOR INC. · DE

Inventors

Axel Pannwitz · Radebeul, DE
Hans Martin von Staudt · Bad Boll, DE
Achim Stellberger · Bad Schönborn, DE

Key dates

Filing date	Jan 24, 2002
Grant date	Mar 23, 2004
Priority date	—
Expiry date	May 8, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH02J7/00306
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention refers to a charge/discharge protection circuit for a rechargeable battery which is protected by a fusible link, where the rechargeable battery comprises a control logic which opens or closes a load switch depending on the magnitude of the battery voltage, the voltage on the charge/discharge terminals of the protection circuit and the charge/discharge current. The protection circuit is designed so that the electric strength needs to match only the actual maximum battery voltage, thus requiring little real estate on an IC chip and also allowing most components to be integrated.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.