Capacitor Module Fastening for Power Converter Heat Dissipation
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Solution Overview
Problem
Power converters face poor heat dissipation due to insufficient heat transfer from heat-producing electronic components like capacitors, busbars, and discharge resistors, leading to potential excessive temperature increases.
Innovation Solution
The power converter design includes fastening members on the inner bottom surface of the converter case, with at least one electronic component mounted between these members, facilitating improved heat transfer from the capacitor module to the case, enhancing heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electronic components are mounted on the capacitor module, then the power conversion circuit functionality is improved, but heat dissipation deteriorates due to insufficient heat transfer to the converter case
Solution Approach 1:
A heat dissipation member is introduced as an intermediary between the electronic components and the converter case. This member has a first contact portion that contacts the electronic components and a second contact portion that contacts the converter case, thereby mediating heat transfer from the components to the case and solving the heat dissipation problem while maintaining component functionality
Solution Approach 2:
The heat dissipation system is segmented into distinct components: the heat dissipation member itself, the first contact portion for component attachment, the second contact portion for case attachment, and the fastening member. This segmentation allows each component to be optimized for its specific function while working together to solve the overall heat dissipation challenge
2Power
If heat-producing electronic components are placed in the converter case, then the power conversion capability is improved, but excessive temperature increase occurs due to poor heat transfer
Solution Approach 1:
The heat dissipation member serves as a thermal intermediary that bridges the electronic components and the converter case. It provides a dedicated heat transfer path that enables effective heat removal from high-power components, allowing the power conversion capability to be increased without suffering from excessive temperature rise
Solution Approach 2:
The solution replaces reliance on natural convection or radiation with a mechanically engineered heat transfer system. The heat dissipation member with its contact portions and the fastening member create a mechanically controlled thermal pathway, substituting passive thermal management with an active mechanical heat transfer system
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 effectively improves heat dissipation of the capacitor module and the power converter, reducing the risk of excessive temperature increases by allowing better heat transfer from the electronic components to the converter case.
Implementation Method 1
facilitating improved heat transfer from the capacitor module to the case
Data Source
AI summary
In a power converter, electronic components constituting a power conversion circuit is provided. A capacitor module and a converter case are also provided in the power converter. Fastening members, which include a first fastening member and a second fastening member, are configured to fasten the capacitor module to the converter case. The first and second fastening members are mounted on the inner bottom surface of the converter case. At least one of the electronic components is mounted to the capacitor module and is arranged between the first fastening member and the second fastening member when viewed in a view direction perpendicular to an alignment direction of the first and second fastening members. The view direction is parallel to the inner bottom surface of the converter case.