Electric heating device for new energy vehicle

Abstract

The invention discloses an electric heating device capable of heating a vehicle air conditioning system and a battery pack set of a new energy vehicle and generating a lot of heat within shorter timeand with more stable structure. The electric heating device comprises a runner A upper shell, a runner A lower shell, a main shell, and a runner B lower shell; separation walls for dividing the main shell and the runner A lower shell into heating cavities and a circulating cavities are formed in the main shell and the runner A lower shell; the circulating cavities accommodate mediums; the mediumsflow to pass through the circulating cavities; the main shell is provided with an inlet and an outlet; the inlet is used for supplying the mediums into at least two circulating cavities; the outlet isused for guiding the heated mediums out of the circulating cavities; electric heating elements are maintained in heating layers of the heating cavities; and the runner A upper shell, the runner A lower shell, the main shell and the runner B lower shell are placed according to a mode of lamination in sequence, and are fastened through a set of fastening elements.

Description

technical field [0001] The invention relates to an electrothermal device for heating a flowing medium, wherein the medium is understood in particular to be a liquid medium. In particular the invention relates to an electrothermal device for a motor vehicle, in this case in particular for a motor vehicle operated by a drive which emits little or no significant amount of process heat . Specifically included in this type of drive are hybrid drives. That is, an electric heating device for new energy vehicles. Background technique [0002] In the prior art it is known to use so-called resistive heating elements or even PTC heating elements in electric vehicles, where, since these heating elements show a greater resistance and thus draw a lower amount of current when heating is increased By so the heating element is self-regulating. PTC heating elements therefore have self-regulating properties that prevent these heating elements from overheating. The maximum temperature achi...

AI Technical Summary

Problems solved by technology

[0004] From ZL201220712509.5, an electric heating device with a housing is known, in which a plurality of PTC heating elements are arranged, wherein, the PTC heating elements are fixed in the U-shaped groove by a wedge-shaped piece, due to the manufacturing of the parts in the production assembly Deviation, resulting in a large deviation in the degree of fastening of the PTC heating element, and it is difficult to detect in the production assembly. It can only be revealed when the power test is carried out after the heating device is assembled.

After the heating device is assembled, it is difficult to disassemble the heating element without damage. When the heating element is repaired and disassembled, there are more damages

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