Battery Fuse Housing Layout for Safe Live Replacement
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Solution Overview
Problem
The replacement of components such as fuses in power supply devices with metallic housings poses risks of short circuits and electric shocks due to potential contact with live parts or dropped components, making maintenance hazardous.
Innovation Solution
A power supply device design with a breaker interposed between the battery assembly and fusing unit, along with an insulating isolated space for the fusing unit, ensures safe replacement by preventing voltage generation and containing dropped components, featuring a detachable housing face for easy access and a resin insulation cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metallic housing is used for the power supply device, then structural strength and durability are improved, but the risk of short circuits and electric shocks during maintenance increases
Solution Approach 1:
The housing is divided into a first housing portion and a second housing portion that can be separated from each other. The breaker is disposed in the first housing portion while the fusing unit is disposed in the second housing portion. This segmentation allows maintenance personnel to access and replace the fusing unit by opening the housing without exposing themselves to the battery assembly, thereby reducing the risk of electric shock and short circuit while maintaining the structural strength of the overall device.
2Reliability
If the breaker is positioned between the battery assembly and the fusing unit, then safety during maintenance is improved, but device complexity increases
Solution Approach 1:
The housing is segmented into two portions with the breaker positioned in the first portion and the fusing unit in the second portion. This spatial segmentation through housing division allows the breaker to be strategically positioned for safety purposes without creating a complex internal arrangement, as the housing structure itself provides the organizational framework.
Solution Approach 2:
The housing structure acts as an intermediary that physically separates and organizes the breaker and fusing unit into different portions. This intermediary structure simplifies the overall device complexity by providing a clear spatial framework that naturally positions components for safety while avoiding the need for additional complex positioning mechanisms.
Data Source
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AI summary
A power supply device 100 includes an external output terminal 30, a battery assembly 10, a fusing unit 50 connected between the battery assembly 10 and the external output terminal 30, a breaker 60 connected between the battery assembly 10 and the external output terminal 30, and a housing 20 in which an internal storage space is defined for storing the battery assembly 10, the fusing unit 50, and the breaker 60. The breaker 60 is connected between the battery assembly 10 and the fusing unit 50. With the power supply device 100, cutting off the breaker 60 prevents the voltage of the battery assembly 10 from being generated in the fusing unit 50, thereby providing an advantage of ensuring safe replacement work of the fusing unit 50.