Electrical Connection Box Layout for Lower Internal Heat
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Solution Overview
Problem
The conventional electrical connection boxes experience increased heat generation due to the distribution of currents from multiple external power supplies, which can lead to overheating within the housing body.
Innovation Solution
The electrical connection box design includes a housing body with an upward opening, incorporating a terminal portion connected to an external power consumption device and a fuse connected between an external power supply and the terminal portion, allowing currents to bypass the internal electrical components, thereby reducing heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple external power supplies are connected to the busbar for power distribution inside the housing body, then the electrical connection box can serve multiple power sources, but the amount of heat generation inside the housing body increases
Solution Approach 1:
The patent extracts the fuse from the housing body and places it in an external fuse holder located outside the housing. This separation removes the heat-generating fuse from the confined housing space, thereby reducing the temperature inside the housing body while maintaining the ability to connect multiple external power supplies through the busbar
2Reliability
If a fuse is provided inside the housing body, then protection against overcurrent is achieved, but the heat generation inside the housing body increases and space is consumed
Solution Approach 1:
The fuse is extracted from the housing body and relocated to an external fuse holder. The housing body is provided with a fuse mounting portion that externally mounts the fuse holder, allowing the fuse to perform its protective function while being positioned outside the housing to reduce internal heat generation and free up internal space
Solution Approach 2:
The patent introduces a fuse holder as an intermediary component between the housing body and the fuse. The fuse holder is mounted on the housing body through a fuse mounting portion and provides a dedicated location for the fuse, enabling the fuse to be easily replaceable while maintaining its protective function and keeping it outside the housing body to reduce heat generation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively reduces heat generation within the housing body while maintaining a compact size and facilitating assembly, without the need for dedicated fuses, thus optimizing thermal management and operational efficiency.
Implementation Method 1
the amount of heat generation inside the housing body increases
Data Source
AI summary
A first electrical connection box 20 includes a housing body 31 open upward, an electrical component 40 provided inside the housing body 31, a first terminal portion 50 provided in an edge part inside the housing body 31, electrically connected to the electrical component 40 and further electrically connected to an external power consumption device, and a fuse 92 to be electrically connected between a third external power supply and the terminal portion 50.