Power Converter Wireless Module Control for Easier Assembly
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Solution Overview
Problem
The assembly of electric power conversion apparatuses is cumbersome due to the need for precise alignment of control terminals between semiconductor modules and control circuit boards, and positional deviations during assembly can lead to reliability issues and increased complexity, especially with multiple modules.
Innovation Solution
Incorporating a wireless communication unit that allows for wireless communication between semiconductor modules and control circuit boards, eliminating the need for wired connections and ensuring clear paths between communication devices to prevent signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired connections are used between semiconductor modules and control circuit board, then electrical signals can be transmitted reliably, but assembly becomes cumbersome and complex due to precise alignment requirements
Solution Approach 1:
The patent replaces the mechanical wired connection system with a wireless communication system. Communication devices are provided on both the control circuit board and semiconductor modules, enabling signal transmission without physical connectors. This eliminates the need for precise alignment of control terminals during assembly while maintaining reliable signal transmission through electromagnetic fields.
2Reliability
If wired connections are used between semiconductor modules and control circuit board, then electrical signals can be transmitted, but positional deviations during assembly lead to reliability issues
Solution Approach 1:
The patent eliminates the mechanical connection system that requires precise alignment by implementing wireless communication. The communication devices transmit signals through electromagnetic fields without requiring physical contact or precise positioning, thereby removing the dependency on manufacturing precision for alignment while ensuring connection reliability.
3Power
If multiple semiconductor modules are used, then power conversion capacity increases, but assembly complexity and risk of positional deviations increase
Solution Approach 1:
The patent applies wireless communication to each semiconductor module independently, allowing multiple modules to be installed without increasing assembly complexity. Each module communicates with the control circuit board through its own communication device, eliminating the need for complex wiring and alignment procedures that would otherwise scale with the number of modules.
Data Source
AI summary
An electric power conversion apparatus includes a semiconductor module, a control circuit board and a wireless communication unit. The semiconductor module has at least one semiconductor element built therein. The control circuit board is configured to control the semiconductor module. The wireless communication unit is configured to wirelessly communicate electrical signals between the semiconductor module and the control circuit board. The wireless communication unit includes a first communication device provided on the control circuit board so as to face the semiconductor module, and a second communication device provided on the semiconductor module so as to face the control circuit board. Moreover, there are no obstacles on a straight path between the first and second communication devices.