Power Converter Insulating Cover for Heat Sink Isolation
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Solution Overview
Problem
Existing power conversion apparatuses face challenges in efficiently improving insulation performance, leading to potential earth faults and reduced reliability due to inadequate insulation between electronic components and heat sinks.
Innovation Solution
Incorporating an insulating cover member within the casing that covers parts of the substrate side of the pressing member, along with a pressing member that presses electronic components to a heat sink, and utilizing insulating materials to maintain insulation distances between components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the pressing member is installed to press the electronic component to the heat sink, then heat dissipation efficiency is improved, but insulation performance deteriorates due to potential contact between conductive components and the heat sink
Solution Approach 1:
An insulating cover member is introduced as an intermediary between the pressing member and the substrate/heat sink assembly. This insulating cover prevents direct electrical contact between the conductive pressing member and the substrate, thereby maintaining insulation performance while allowing the pressing member to continue applying mechanical pressure for thermal contact between the electronic component and heat sink.
2Device complexity
If the pressing member directly contacts the substrate for mounting, then device complexity is reduced, but harmful electrical contact occurs between the pressing member and substrate
Solution Approach 1:
The insulating cover member serves as a mediator that eliminates harmful electrical contact between the pressing member and substrate. By placing this insulating layer, the design prevents earth faults and electrical short circuits while maintaining the simplicity of the overall pressing mechanism.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances insulation performance, preventing earth faults and improving the reliability of power conversion devices by ensuring effective insulation between critical components and heat sinks.
Implementation Method 1
a heat sink where the casing is installed, the heat sink dissipating a heat from the electronic component
Implementation Method 2
a heat sink where the casing is installed, the heat sink dissipating a heat from the electronic component
Data Source
AI summary
A power conversion apparatus includes: a casing that houses an electronic component; a heat sink where the casing is installed, the heat sink dissipating a heat from the electronic component; a substrate disposed on an opposite side of the heat sink in the casing, the substrate including a power converter circuit; a pressing member housed in the casing, the pressing member pressing the electronic component to the heat sink side; and an insulating cover member included in the casing, the insulating cover covering at least a part of the substrate side of the pressing member.