Electric Junction Box Heat Dissipation Wall
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Solution Overview
Problem
The electric junction box in automobiles experiences heat generation from the bus bar due to large currents, which can adversely affect other components.
Innovation Solution
Incorporating a heat dissipation surrounding wall above the bus bar within the frame, composed of a cassette block and a rack, to direct heat away from other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a bus bar is used to handle large currents, then power transmission capability is improved, but heat generation increases and adversely affects other components
Solution Approach 1:
The junction box interior space is segmented into a heat dissipation space (above the bus bar) and a component mounting space (below the bus bar), separating the heat generation zone from the component zone to prevent heat from affecting other components while maintaining high power transmission capability
Solution Approach 2:
The patent utilizes the vertical dimension by positioning the bus bar horizontally and creating a heat dissipation space above it, directing heat upward away from other components mounted below, thus solving the heat management problem through spatial dimensionality
2Area of stationary object
If components are densely arranged in the junction box, then space utilization is improved, but heat dissipation becomes difficult and heat affects other components
Solution Approach 1:
The junction box is divided into functional zones: a heat dissipation space above the bus bar and a component mounting space below it, allowing dense component arrangement in the lower area while maintaining effective heat dissipation in the upper area
Solution Approach 2:
Different regions of the junction box are assigned different functions: the upper region is optimized for heat dissipation with higher clearance, while the lower region is optimized for component mounting with dense arrangement, creating local quality differences to simultaneously achieve space utilization and heat dissipation
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
Effectively dissipates heat generated by the bus bar upwards, away from other components, preventing heat radiation and potential damage.
Implementation Method 1
the heat generated from the predetermined portion of the bus bar dissipates upward where other components are not located
Implementation Method 2
heat generated by the bus bar dissipates upward without radiating toward other components
Data Source
AI summary
Disclosed is an electric junction box dissipating heat generated by a bus bar toward components. The electric junction box 1 includes frame composed of a cassette block to which a plurality of components including a bus bar is attached, and a rack having the cassette block fitted thereinto. The cassette block includes component attachment part, and a connector fitting part into which a connector of a power source line input portion is fitted. The connector is electrically connected to the power source line input portion in the connector fitting part. The electric junction box includes a heat dissipation surrounding wall right above the connector fitting part. The heat dissipation surrounding wall is composed of a part of the cassette block and a part of the rack, inside which a heat dissipation space S is formed that any of the components avoids being attached to.