Power Delivery System Failure Material Routing
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Solution Overview
Problem
In power delivery systems for vehicles, the failure of one semiconductor power device can lead to a cascade failure of other components due to the escape of failure materials like gases, debris, and plasma, causing damage and system shutdown.
Innovation Solution
A power delivery system design featuring a first bus bar with semiconductor power devices enclosed in a housing that includes an outlet to direct failure materials away from other devices, and a compact multi-bus bar configuration with angled planar landings and riser portions to facilitate failure material routing and prevent interaction with other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If semiconductor power devices are enclosed in a housing without failure material routing, then device protection is improved, but cascade failure prevention deteriorates
Solution Approach 1:
The patent extracts the harmful failure material from the enclosed housing by providing a dedicated failure material outlet. This allows the housing to maintain its protective enclosure function while simultaneously enabling the extraction and removal of failure materials (gases, debris, plasma) away from other semiconductor devices, preventing cascade failures.
Solution Approach 2:
The failure material outlet acts as an intermediary channel between the enclosed housing and the external environment. It provides a controlled pathway for failure materials to exit the housing, mediating between the need for enclosed protection and the need to prevent harmful material accumulation that could cause cascade failures.
2Volume of moving object
If a compact multi-bus bar configuration is used, then space efficiency is improved, but failure material routing capability deteriorates
Solution Approach 1:
The patent utilizes the vertical dimension by extending the failure material outlet upward from the housing, away from the plane of the bus bars. This dimensional change allows the compact multi-bus bar configuration to maintain its space efficiency while the outlet routes failure materials in a different spatial direction (vertically upward) away from other components, preventing interaction despite close proximity.
Solution Approach 2:
The housing and outlet configuration introduces asymmetry into the otherwise symmetric multi-bus bar arrangement. The outlet is positioned and oriented asymmetrically to direct failure materials away from the bus bar plane, breaking the symmetry to achieve effective failure material routing without increasing the overall system footprint.
Data Source
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AI summary
A power delivery system includes a bus bar and a housing coupled to the bus bar. A semiconductor power device is enclosed within the housing. The housing comprises an outlet configured to direct failure material of the power semiconductor device away from any remaining components connected to the bus bar. In another aspect, the power delivery system additionally or alternatively comprises two bus bars. A first of the two bus bars has a first landing, a riser, and a second landing, which is parallel to the first landing and in effect spatially offset from the first landing. A second of the two bus bars is attached to the second landing of the first bus bar, such that the second bus bar is parallel to but offset from the first landing of the bus bar.