Automobile Wiring Harness Layout for Modular Power Distribution
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Solution Overview
Problem
Existing automobile wiring systems require significant redesign when the power supply system changes, limiting their versatility across different types of vehicles such as internal combustion engine, electric, and hybrid vehicles.
Innovation Solution
A modular wiring system with a first connection device and multiple second connection devices, where a bus communication line passes through and branches to connect various electrical components, allowing integration of multiple power sources and easy adaptation to different power supply systems and components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a battery is connected to the main line intermediate distribution portion and another battery is connected to one of the main line end portion distribution portions, then the power supply system can be configured, but the entire wire harness design must be changed when the power supply system is different
Solution Approach 1:
The wire harness is divided into modular units: a main line portion with intermediate distribution portion, and multiple branch line portions with end portion distribution portions. Each module can be independently configured and connected through connection portions, allowing flexible adaptation to different power supply systems without redesigning the entire harness.
Solution Approach 2:
The connection portions are designed with universal connection structures that can accommodate different power supply configurations. The same basic wire harness structure can serve multiple power supply systems (single battery, dual battery, different voltage systems) by simply changing which connection portions are activated or how they are configured, rather than requiring complete redesign.
2Adaptability or versatility
If the wire harness design is changed for different power supply systems, then the power supply configuration can be adapted, but the manufacturing cost and design time increase
Solution Approach 1:
By segmenting the wire harness into standardized modules (main line portion, branch line portions, connection portions), the manufacturing process can produce each module independently using the same tooling and processes. This modular approach allows mass production of standard components that can be assembled in different configurations for different power supply systems, significantly reducing manufacturing costs and time compared to custom-building entire harnesses for each application.
3Adaptability or versatility
If multiple batteries are connected to different distribution portions, then power distribution flexibility is achieved, but the wiring complexity and installation difficulty increase
Solution Approach 1:
The division into main line and branch line portions with clear connection portions creates a hierarchical structure that simplifies installation. Installers can work on individual modules independently, connecting them in sequence rather than dealing with a complex monolithic wiring system. This modular approach maintains power distribution flexibility while making installation more manageable and less error-prone.
Solution Approach 2:
The connection portions serve as intermediaries between the main line and branch line portions, providing standardized interfaces that simplify connections. These intermediary connection points abstract the complexity of multiple battery connections, allowing installers to connect modules using standardized procedures rather than dealing directly with the complexity of multiple power sources and their interconnections.
Data Source
AI summary
A wiring system for an automobile includes: a first connection device connected to a corresponding one of electrical components so as to communicate with and supply power to the corresponding electrical component; and a plurality of second connection devices each connected to a corresponding one of the electrical components so as to communicate with and supply power to the corresponding electrical component, wherein a bus communication line sequentially passes through the first connection device and the plurality of second connection devices, and is branched so as to communicate with the electrical components in the first connection device and the plurality of second connection devices, and a plurality of power sources mounted in the automobile are connected to the first connection device and integrated, and electric power supplied from the plurality of power sources is distributed from the first connection device to the plurality of second connection devices.