COOLING DEVICE FOR INVERTER AND LDC ELEMENTS FOR HEV
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United States of America Patent
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Issued Date -
May 15, 2008
app pub date -
Aug 15, 2007
filing date -
Dec 11, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention relates to a cooling device for inverter and DC/DC converter (LDC) elements for hybrid electric vehicle (HEV) and, more particularly, to a cooling device for inverter and LDC elements for HEV that enhances the cooling efficiency by applying a cooling device that uses a heat pipe principle to convect coolant to an inverter system that radiates heat of high temperature. For this purpose, the present invention provides a cooling device including a heat sink attached closely to inverter and LDC elements generating heat and a plurality of heat sink fins formed in a body on one surface of the heat sink, wherein the cooling device is characterized in that a coolant convection space is formed in the heat sink; a porous material made of a heat conductive material is attached on the whole inner surface of the coolant convection space; coolant is filled in the coolant convection space so that the coolant in the coolant convection space is convected from the substantial middle of the coolant convection space to both distal sides thereof by heat diffusion generated from the elements to radiate heat and then returns to the substantial middle portion.
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