Insulative Partition Wiring Member for Power Conversion Downsizing
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Solution Overview
Problem
The existing techniques for semiconductor element modules do not allow for a reduction in the distance between main terminals, which restricts the downsizing of power conversion devices due to the need for an insulation distance corresponding to the voltage applied to the main terminals.
Innovation Solution
A wiring member with an insulative partition is used to electrically connect main terminals of semiconductor element modules, allowing the distance between them to be shorter than the insulation distance by blocking the line of sight between the terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an insulation distance is provided between semiconductor element modules according to voltage requirements, then electrical insulation is ensured, but the distance between modules cannot be reduced, limiting device downsizing
Solution Approach 1:
The insulative partition extends in the vertical direction (height direction) rather than requiring increased horizontal distance between modules. By adding the height dimension to the insulation structure, the patent achieves electrical insulation while maintaining compact horizontal spacing, thus resolving the contradiction between insulation requirements and module distance reduction
Solution Approach 2:
The insulative partition acts as an intermediary structure between the first and second main terminals. This intermediate insulating element blocks the electric field path and prevents direct electrical interference, allowing modules to be positioned closer together while maintaining required insulation levels
2Length of stationary object
If the distance between main terminals is reduced for downsizing, then device compactness is improved, but electrical insulation between terminals at different potentials cannot be ensured
Solution Approach 1:
Instead of increasing horizontal distance to achieve insulation, the insulative partition utilizes the vertical height dimension to provide the required insulation distance. This allows the horizontal distance between main terminals to be minimized for compactness while the vertical partition maintains electrical insulation
Solution Approach 2:
The insulative partition provides localized insulation precisely where needed between the first and second main terminals. Rather than requiring uniform increased spacing throughout the device, the partition concentrates insulation functionality in a specific location, enabling overall device downsizing while maintaining insulation reliability
Data Source
AI summary
A wiring member to electrically connect a positive direct-current terminal and an alternating-current terminal to each other, the positive direct-current terminal being formed in a semiconductor element module, the alternating-current terminal being formed in a semiconductor element module, a positive potential being applied to the positive direct-current terminal, a positive potential and a negative potential being appropriately applied to the alternating-current terminal, the wiring member including an insulative partition formed on the wiring member, the insulative partition being upright so as to block the line of sight between the positive direct-current terminal and the alternating-current terminal.