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Electric heating device

A heating device, heating circuit technology, used in heating/cooling equipment, transportation and packaging, air handling equipment, etc., which can solve problems such as power consumption and negative impact of operating range

Active Publication Date: 2012-03-14
EBERSPACHER CATEM
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] With regard to heating, the problem with electric or hybrid vehicles is that the drive unit of the vehicle does not consume sufficient waste heat for heating or air conditioning
Combinations of heating and cooling circuits are therefore particularly disadvantageous in that, in the absence of waste heat, the presence of large volumes of cold coolant in the cycle prevents effective heating, negatively affecting electrical power consumption and operating range

Method used

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Embodiment Construction

[0031] The invention relates to a motor vehicle heater which may be formed as a hot water heater and which comprises one or more PTC heating elements. If multiple heating elements are present, they may be combined to form one or more heating stations, such that the heating elements of the heating stations are jointly controlled. For example, control may be performed by pulse width modulation (PWM). Furthermore, combinations of multiple binary heating stages can be made, which can be adjusted quasi-continuously or with small gaps using PWM. Minimization of undesired side effects such as EMC (Electromagnetic Compatibility) disturbances occurring in the automatic high voltage range can thus be achieved with a slight clearance adjustment.

[0032] The heating device according to the invention facilitates the heating of the passenger compartment of a motor vehicle, where applicable also using other heat sources (preferably non-electric) than electrical energy (via PTC heating elemen...

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Abstract

The present invention relates to a PTC based heating device for a motor vehicle, preferably with electrical propulsion, in which one or a plurality of supplementary circuits are connected to a heating circuit for being switched in optionally. In this way it is possible to use a large number of possibilities for temperature control for energy management which is important in electric vehicles.

Description

technical field [0001] The invention relates to an electric heating device for a motor vehicle. Specifically, the present invention relates to an electric heating device suitable for electric vehicles and hybrid vehicles, which uses a liquid medium as a heat transfer medium. Background technique [0002] With regard to heating, the problem with electric or hybrid motor vehicles is that the drive unit of the motor vehicle does not consume sufficient waste heat for heating or air conditioning. A suitable motor vehicle heating device must therefore be suitable for supplying the interior of the motor vehicle with the heat required for heating and for operating processes in the individual system components of the motor vehicle (e.g. for preheating the rechargeable battery of the motor vehicle) ) or at least support the heat required to run the processes in the various system components of the motor vehicle. An obvious method is to provide the required heat through electrical me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/22B60H1/03H04M1/724
CPCB60H1/00278B60H1/00385B60H1/14B60H1/2221B60H2001/00928B60H2001/00307B60H1/2218
Inventor 埃马努埃尔·迪特尔霍尔格·雷斯
Owner EBERSPACHER CATEM
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