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Heating element comprising films

A heating element, thin layer technology, applied in electrical elements, ohmic resistance heating, transparent/reflective heating devices, etc., can solve complex and expensive problems

Inactive Publication Date: 2013-09-25
SAINT-GOBAIN GLASS FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the process is complicated and expensive

Method used

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  • Heating element comprising films

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Embodiment Construction

[0027] The invention relates to a heating element comprising at least one substrate equipped with a thin layer stack comprising layers suitable for heating. The layer suitable for heating has an electrical sheet resistance of between 20 and 200 ohms per square unit. A layer suitable for heating allows the glazing to be defogged / deiced or the room to be heated. The stack also includes two non-metallic dielectric layers on either side of the layer suitable for heating. These non-metallic dielectric layers have an anti-reflection function. The heating element also includes two conductive current collectors adapted to receive an electrical voltage, to which the layer adapted to be heated is electrically connected to be heated. The layer suitable for heating is intact, ie it has not been processed by etching. Consequently, no areas are removed from this layer, and no geometrical features are etched in the layer suitable for heating, which would increase the effective resistance ...

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Abstract

The invention relates to a heating element including a substrate (1) provided with a stack of thin films, the stack of thin films including a film (3) suitable for heating and having a surface electrical resistance of between 20 and 200 Ohm / square, and two nonmetal dielectric layers (4, 5) located on either side of the film (3) that is suitable for heating, the heating element also including two collecting conductors to be supplied with electrical voltage, the film (3) that is suitable for heating being solid, made of metal, and electrically connected to the two collecting conductors. The invention enables a heating element, which has a film suitable for heating and which is simply manufactured, to be easily installed on an electric vehicle or easily connected to the national electrical grid.

Description

technical field [0001] The invention relates to a heating element comprising a substrate provided with a thin layer stack comprising layers suitable for heating. Background technique [0002] It is known to use such heating elements as heated windshields for motor vehicles in order to defog and / or de-ice the windshield. When the glazing is installed on the vehicle and electrically connected to the electrical system, the layer suitable for heating becomes hot. [0003] The power P dissipated by heating the windshield is equal to the square of the voltage U supplied to the windshield divided by the resistance R of the heating layer (P=U 2 / R). The power dissipated must be higher than 500 W / m 2 To effectively defog and / or de-ice the windshield. In vehicles powered by an internal combustion engine, the on-board voltage is approximately 12 or 42 volts. The heating layer used is made of silver. They have an electrical sheet resistance of approximately 1 or 4 ohms per square ...

Claims

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Application Information

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IPC IPC(8): H05B3/86
CPCB32B17/10036B32B17/10229B32B17/10761B60S1/026H05B3/36H05B3/86H05B2203/013
Inventor S.劳伦特B.毛维奈斯D.鲁西伊姆伯格
Owner SAINT-GOBAIN GLASS FRANCE
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