Electric Motor Controller Board Segmentation for Heat and Noise Isolation
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Solution Overview
Problem
The increasing complexity of electric motor drive control leads to heat and electric noise interference between semiconductor components on a controller board, which complicates the performance of other electronic components, and the demand for smaller and lighter equipment exacerbates these issues, with existing solutions failing to effectively prevent heat and noise propagation.
Innovation Solution
The implementation of a separating zone on the controller board, featuring a through hole or notch, separates electronic components into groups based on function or characteristics, effectively preventing heat and electric noise propagation between them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If electronic components are mounted densely on the controller board to reduce size and weight, then the device size and weight are reduced, but heat and electric noise interference between components increases
Solution Approach 1:
The controller board is segmented into multiple isolation zones using through-holes and notches that divide the board into separate regions. These zones physically separate heat-generating components from sensitive components, preventing thermal and electromagnetic interference while maintaining high component density overall.
Solution Approach 2:
Different regions of the controller board are assigned different functional qualities - some zones are designated for high-power heat-generating components while other zones are reserved for sensitive low-power components. The through-holes and notches create local isolation barriers that tailor the thermal and electromagnetic properties of specific board regions.
2Adaptability or versatility
If more semiconductor components are mounted on the controller board to handle complex drive control, then the control functionality is improved, but heat generation and electric noise increase
Solution Approach 1:
The board is divided into functional zones using through-holes and notches, with separate regions for power semiconductor components and control electronic components. This segmentation allows the board to support complex drive control functionality while isolating the harmful effects of each component group.
Solution Approach 2:
The harmful thermal and electromagnetic fields are extracted or blocked from propagating across the entire board by introducing through-holes and notches that act as barriers. This extraction prevents heat and noise from one functional group from affecting other functional groups.
3Device complexity
If a simple hole is provided at the center of the controller board, then the structure is simplified, but it fails to effectively prevent heat and electric noise propagation between components
Solution Approach 1:
Instead of a single central hole, multiple through-holes and notches are strategically distributed across the board to create multiple isolation zones. This segmentation provides comprehensive coverage for preventing heat and noise propagation while maintaining relatively simple manufacturing processes.
Solution Approach 2:
The isolation strategy moves from a single-point (center hole) approach to a multi-dimensional distribution of through-holes and notches across the board surface. This creates a network of isolation barriers that effectively block heat and electromagnetic noise propagation paths in multiple directions.
Data Source
AI summary
A board includes a separating zone in an area closer to the edge than to the center of the board, the separating zone including one elongated through hole. A first group of electronic components that is a source of heat or electric noise is placed in a first area on the center side with respect to the separating zone of the board. On the other hand, a second group of electronic components from which influence of heat or electric noise from other components needs to be eliminated to a maximum extent is placed in a second area on the edge side with respect to the separating zone of the board.