Patent · US Expired

Electric heater for a motor vehicle with individually switched branch circuits

US6348672B2 · kind B2 · utility

1Cited by

5References

23Claims

0Family size

Assignee

GKR Gesellschaft fur Fahrzeugklimaregelung mbH · DE

Inventors

Harald Eisenhardt · Rutesheim, DE
Rolf Falliano · Welzheim, DE

Key dates

Filing date	Jun 9, 1999
Grant date	Feb 19, 2002
Priority date	—
Expiry date	Jun 9, 2019

Classification

Technology area (CPC H)Electricity
CPC primaryH01L2924/3011
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electric heater for a motor vehicle uses heat generated by power semiconductors as the heat source. The heat output by the power semiconductors is used directly for heating. The power semiconductors are regulated by circuit regulators to be able to adjust the heating power continuously. In addition, switching devices are provided which interrupt or shut down the respective branch circuits individually in the event of short circuits in the power semiconductors.

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