Patent ID: 6529394
Filing Date: 2003-03-04
Classification: H02M,H05K

Abstract:
An inverter for an electric motor comprising:a switching means, a heat sink means associated with said switching means, a capacitance means, and DC to AC inverter circuitry; wherein said switching means and said DC to AC inverter circuitry enable said inverter to receive DC voltage as an input and to output 3-phase AC current, chips of said inverter circuitry and said switching means are mounted directly on a top surface of said heat sink means, and said heat sink means comprises a housing with at least one heat transfer liquid throughway in an interior of said heat sink housing, at least an input and an outlet port for heat transfer liquid, such that said heat transfer liquid flows through said heat sink means to dissipate heat from said switching means, and an interior heat transfer medium, said heat transfer medium comprising a plurality of metallic spheres thermally connected to each other and to an interior surface of said heat sink housing, such that a spaced lattice structure is formed.