Power Conversion Apparatus Reactor Load Supporting Part
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Solution Overview
Problem
Power conversion apparatuses with semiconductor modules and cooling members face challenges in miniaturization and securing adequate fixing force due to uneven load distribution and vibration, particularly with reactors and other electronic components being laminated together.
Innovation Solution
Incorporating a load supporting part between the load application and fastening parts in electronic components, which redirects applied loads to enhance fixing force and reduce size requirements, while using a pressurizing member to stabilize the laminate structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the reactor size is increased to enhance load resistance, then the load resistance is improved, but the device volume increases
Solution Approach 1:
The reactor is divided into a load application part and a load supporting part. The load supporting part is positioned between the load application part and the fastening part, creating a moment of force that presses the reactor toward the casing. This segmentation allows the reactor to achieve adequate load resistance without increasing overall size.
Solution Approach 2:
The load supporting part extends in the lamination direction, utilizing the third dimension to create a moment arm. This dimensional approach converts the applied load into a pressing force against the casing, improving fixation without requiring larger reactor dimensions in other directions.
2Force
If the electronic component size is increased to secure adequate fixing force, then the fixing force is improved, but the device volume increases
Solution Approach 1:
The electronic component is segmented into distinct functional parts: load application part, load supporting part, and fastening part. This segmentation enables the load supporting part to generate moment of force that enhances fixing force without requiring the entire component to be larger.
Solution Approach 2:
The load supporting part acts as an intermediary between the load application part and the fastening part. It transmits and transforms the applied load into moment of force that presses the electronic component against the casing, improving fixation force without increasing overall component size.
3Strength
If the reactor is laminated with semiconductor modules and cooling member, then the adhesion is enhanced, but the load distribution becomes uneven
Solution Approach 1:
The reactor structure is segmented to distinguish between the load application part (facing pressurizing member) and the load supporting part (contacting casing). This segmentation allows different parts to handle different aspects of load, creating a moment of force that improves both adhesion and load distribution in the lamination structure.
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
This configuration allows for miniaturization of electronic components and improves their fixing force to the casing, enhancing load resistance and vibration stability without increasing component size.
Implementation Method 1
a pressurizing member that pressurizes the laminate in a lamination direction
Implementation Method 2
a cooling member that cools the semiconductor module and the electronic component
Implementation Method 3
moment of force around the load supporting part is produced in the electronic component by the load applied to the load application part; and the moment causes the electronic component to be pressed towards a pressed part which constitutes a part of the casing
Data Source
AI summary
A power conversion apparatus includes a semiconductor module, an electronic component, a cooling member, a casing and a pressurizing member. The electronic component includes a load application part that receives a load caused by pressurizing force on a surface in a pressurizing member side with respect to the lamination direction; a load supporting part that comes into contact with a contact part of the casing on a surface opposite to the pressurizing member side with respect to the lamination direction; and a fastening part fastened to a casing fastening part. The load supporting part is disposed between the load application part and the fastening part; moment of force around the load supporting part is produced in the electronic component by the load applied to the load application part; and the moment causes the electronic component to be pressed towards a pressed part of the casing.