Patent · US Expired

Over-voltage protected, self-contained mobile electrical network system, particularly for automotive applications

US4280161A · kind A · utility

14Cited by

4References

4Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Edgar Kuhn · Gerlingen, DE
Walter Kohl · Bietigheim, DE
Gunter Schramm · Lambach, DE

Key dates

Filing date	Jan 26, 1979
Grant date	Jul 21, 1981
Priority date	—
Expiry date	Jan 26, 1999

Classification

Technology area (CPC H)Electricity
CPC primaryH02H7/065
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

To protect the battery in an automotive electrical system against over-charging upon failure of the voltage regulator to control current flow through the field of an automotive alternator, the field current is conducted through an interruptable network element, for example a fuse or a relay controlled switch. A voltage sensing network, for example a Zener diode, is connected to control current flow through a controlling element, for example a thyristor, which provides either an auxiliary current to burn out the fuse or a control current to the relay coil to interrupt connection to the field if over-voltage has been sensed. Simultaneously, an indicator lamp can be energized to indicate malfunction of the voltage regulator.

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