Patent · US Active

Electric heating device for vehicles having a high voltage electric system

US9259991B2 · kind B2 · utility

0Cited by

3References

9Claims

0Family size

Assignee

VALEO KLIMASYSTEME GmbH · DE

Inventors

Andreas Freund · Heroldsbach, DE
Hans-Joachim Lilge · Weitramsdorf, DE
Johannes Molitor · Ehningen, DE
Markus Hermann · Laupersdorf, CH
Marian Mazurek · Stuttgart, DE
Martin Aidam · Reutlingen, DE

Key dates

Filing date	Jan 4, 2011
Grant date	Feb 16, 2016
Priority date	—
Expiry date	Apr 17, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH05B2203/023
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

In the heating device, PTC heating elements arranged between current rails lying opposite each other are used, which are fed with supply current from a control electronics unit via the current rails. Metallic heating rib structures are respectively coupled to one of the current rails via an electrically insulating but thermally conducting coupling layer. The air to be heated flows through the heating rib structures which have an undulating shape. The metallic heating rib structures are electrically connected to vehicle ground and thus form a shield that eliminates emissions of electromagnetic interfering radiation without impeding the flow of air.

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