Saddle Riding Vehicle Battery and ECU Widthwise Layout
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Solution Overview
Problem
Conventional saddle riding vehicles face challenges in compactly disposing an electronic control unit and battery below the seat, alongside the existing battery placement between seat rails.
Innovation Solution
The vehicle design includes a pair of seat rails with a battery and electronic control unit arranged side by side in the vehicle width direction between them, with a main harness wired longitudinally, and an electric component storing box with a partition wall to separate and protect these components, allowing for compact and efficient placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the battery and electronic control unit are disposed below the seat in a compact manner, then the space utilization is improved, but the wiring complexity increases
Solution Approach 1:
The patent transitions from conventional longitudinal wiring to a width-directional wiring arrangement. The electronic control unit is positioned adjacent to the battery in the vehicle width direction, allowing the main harness to be routed horizontally between them rather than longitudinally along the vehicle length. This dimensional change in component layout simplifies the wiring path and reduces wiring complexity while maintaining compact space utilization below the seat.
2Length of moving object
If the battery and electronic control unit are arranged side by side in the vehicle width direction, then the longitudinal space is reduced, but the lateral space requirement increases
Solution Approach 1:
The patent repositions the electronic control unit from a conventional longitudinal arrangement to a width-directional arrangement adjacent to the battery. This shifts the spatial occupation from the longitudinal dimension to the lateral dimension, reducing the longitudinal footprint below the seat while utilizing available width space between the left and right seat rails, thereby optimizing the overall space distribution.
3Length of stationary object
If the main harness is wired in the longitudinal direction between the battery and electronic control unit, then the wiring path length increases, but the wiring route flexibility is improved
Solution Approach 1:
The patent changes the wiring direction from longitudinal to width-directional, routing the main harness horizontally between the battery and electronic control unit. This dimensional shift in harness routing significantly reduces the wiring path length by eliminating the need for the harness to extend the full longitudinal distance, while the adjacent positioning of components maintains routing flexibility within the compact lateral space.
Data Source
AI summary
A saddle riding vehicle includes: a pair of left and right seat rails disposed below a seat for a passenger; a battery disposed below the seat; and an ECU for controlling a drive source of the vehicle, wherein when viewed from above, the battery and the electronic control unit are arranged side by side in a vehicle width direction between the left and right seat rails.