Heat dissipating electromagnetic device arrangement

Abstract

An electromagnetic device arrangement includes a transformer assembly having a core, windings, and a housing disposed around at least a portion of the core and windings. An enclosure at least partially encloses the transformer assembly. The transformer assembly is mounted to a first portion of the enclosure such that heat is transferred from the transformer assembly to the first portion of the enclosure. A second portion of the enclosure has an extension extending therefrom such that the extension is placed in thermal contact with the transformer assembly to transfer heat from the transformer assembly to the extension.

Description

technical field [0001] The invention relates to a heat dissipation electromagnetic device arrangement. Background technique [0002] Electromagnetic devices, such as inductors and power transformers, can be constructed in many different ways. One common way is to have the winding at least partially surrounded by an iron core, which may for example be made of ferrite material. The core may be made from two or more pieces of material bonded to each other using an adhesive material such as epoxy. The windings and core can be covered with potting material and surrounded by a housing that allows the transformer to be mounted to another structure, such as a chassis or mounting pad. [0003] Electromagnetic devices are increasingly used in electronic devices where, for example, a transformer, including the transformer housing, can be placed within a larger housing. This can cause problems with heat dissipation, eg due to lack of convective airflow over the transformer within the...

AI Technical Summary

Problems solved by technology

When different parts of a transformer core are at significantly different temperatures, temperature gradients between said parts of the core can create thermally conductive stresses that can then cause the core to crack or otherwise fail

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