Electric heating system for a motor vehicle

US6875962B2 · kind B2 · utility

Inventors

• Gunther Uhl · Waibstadt, DE
• Steffen Geiger · Asperg, DE
• Thomas Alban · Le Creusot, FR
• Thomas Giffels · Stuttgart, DE
• Dirk Wenske · Ludwigsburg, DE
• Andreas Hamburger · Germersheim, DE
• Mike Riether · Herxheim, DE

Key dates

• Filing date: Jan 17, 2002
• Grant date: Apr 5, 2005
• Expiry date: Jan 17, 2022

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05K2203/0315
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

An electric heating system for motor vehicles including one or several electric heating elements; a control circuit provided for controlling the power dissipated by the heating elements; the control circuit including one or several power semiconductors arranged on a circuit board; the circuit board is by means of a solid matter connection connected by the side facing away from the power semiconductors to a metal plate intended to be mass potential; the metal plate being electrically insulated from conductor paths located on the underside of the circuit board and intended to carry a voltage in relation to the ground potential; the control circuit being arranged in a housing. One or several heat sinks are provided outside the housing. The metal plate is connected with the heat sinks arranged outside the housing by thermally conductive connectors.