Wiring Module with Overcurrent Branch and Heat Dissipating Reinforcement
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Solution Overview
Problem
Existing in-vehicle power supply systems face challenges in reducing the total length of power supply lines and effectively dissipating heat generated within these lines, leading to inefficiencies and potential overheating issues.
Innovation Solution
A wiring module design featuring a common power supply line with a branch part that includes an overcurrent blocking mechanism, where the cross-sectional area of wiring bodies decreases with distance from the power source, and the module is routed along a reinforcement to minimize length and enhance heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple fuses and loads are separately connected by individual power supply lines, then each load receives dedicated power supply, but the total length of power supply lines increases significantly
Solution Approach 1:
The power supply system is segmented into a common power supply line and multiple branch lines. The common line carries power from the source to a branching point, where multiple shorter branch lines connect to individual loads. This segmentation reduces the total wire length compared to running separate full-length lines from the source to each load, while maintaining dedicated power supply paths for reliability.
2Length of moving object
If the power supply line is routed through the reinforcement, then the total distance is reduced and installation is simplified, but heat generated in the power supply line is difficult to radiate outside
Solution Approach 1:
The reinforcement structure serves as a thermal intermediary. The power supply line is positioned to conduct heat to the reinforcement, which then acts as a heat sink and radiation surface. This mediator approach allows the line to be routed through the reinforcement for space efficiency while the reinforcement itself dissipates the generated heat to the surrounding environment.
3Weight of stationary object
If the cross-sectional area of wiring bodies decreases with distance from the power source, then material usage and weight are reduced, but the ability to handle high current near the source is compromised
Solution Approach 1:
The wiring system employs local quality by varying the cross-sectional area of wiring bodies according to their specific functional requirements. Near the power source where high current flows, the wiring has larger cross-sectional area for optimal current handling. As distance increases and current demand decreases, the cross-sectional area is reduced to minimize weight and material usage. This graduated variation optimizes both electrical performance and physical properties at different locations along the power distribution path.
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 design reduces the total power supply line distance, simplifies maintenance by using semiconductor switches for overcurrent protection, and effectively radiates heat through the reinforcement, improving efficiency and reliability.
Implementation Method 1
an overcurrent blocking part provided in the power supply branch line to enter a non-continuity state when current exceeding allowable current flows in the power supply branch line
Implementation Method 2
at least part of the common power supply line and at least part of the power supply branch part are housed in the reinforcement... radiate heat which has occurred in a power supply wiring body outside easily
Data Source
AI summary
A wiring module includes: a common power supply line whose one end is electrically connected to a power source; and a power supply branch part provided halfway through the common power supply line, wherein the power supply branch part includes at least one group of a power supply branch line branched halfway through the common power supply line and an overcurrent blocking part provided in the power supply branch line to enter a non-continuity state when current exceeding allowable current flows in the power supply branch line. A wiring module is a wiring module disposed along a fixing target member, and includes: a power supply flat wiring body disposed along a surface of a fixing target member; and a ground flat wiring body disposed along a surface of the power supply flat wiring body on an opposite side from the fixing target member.