Movable Bus Bar for Vehicle Electronic Module Vibration
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Solution Overview
Problem
Conventional vehicle electronic modules with detachable electronic components face issues of increased electrical resistance due to frictional heat generated from vibration, as the bus bar slides against the connection terminal, leading to unstable electrical connections.
Innovation Solution
An electronic module design where the bus bar is movable with the electronic component, featuring a U-shaped connection end portion that pinches the terminal, and a movable distance that matches or exceeds the range of the component's vibration, preventing contact point shifting and frictional heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bus bar is fixed to the casing, then the structure is simple and manufacturing is easy, but the electrical connection becomes unstable due to frictional heat from vibration
Solution Approach 1:
The bus bar is designed to be movable rather than fixed, allowing it to move in the vertical direction to follow the electronic component during vibration. This dynamic configuration prevents relative sliding between the bus bar and connection terminal, eliminating frictional heat generation and stabilizing electrical connection without requiring complex additional structures.
2Reliability
If the bus bar is made movable to follow component vibration, then electrical connection stability is improved, but the device structure becomes more complex
Solution Approach 1:
The bus bar serves multiple functions: it provides electrical connection, acts as a heat dissipation path, and simultaneously follows the vibration of the electronic component through its movable design. This multi-functionality achieves vibration compensation and electrical connection stabilization without requiring separate dedicated structures, thereby avoiding increased device complexity.
3Reliability
If the bus bar contacts the connection terminal firmly, then electrical resistance is reduced, but frictional heat increases during vibration
Solution Approach 1:
The bus bar is designed to move vertically to follow the electronic component's vibration, maintaining firm contact with the connection terminal while preventing relative sliding. This dynamic contact approach ensures low electrical resistance without generating frictional heat, as the bus bar and terminal move together rather than sliding against each other.
Data Source
AI summary
Provided is an electronic module with which electrical connection with an electronic component attached to the electronic module can be stabilized. A vehicle electronic module including a casing that includes a ceiling plate to which an electronic components is to be attached and a bottom plate that is located opposite to the ceiling plate includes a bus bar configured to be electrically connected to a relay terminal of the electronic component inserted into the casing, and the bus bar is movable together with the electronic component in the opposing direction of the ceiling plate and the bottom plate.