Battery Case Wire Harness Routing for Vibration Isolation
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Solution Overview
Problem
Existing vehicle designs face challenges in integrating a wiring structure for the wire harness and a vibration isolation structure for the upper case while minimizing space, as they require separate configurations that complicate space management and can lead to noise and damage from vibrations.
Innovation Solution
A vehicle design that incorporates a battery case with an upper and lower case, where the wire harness passes through a gap between case and frame members, covered by an elastic member, and additional support structures to sandwich the wire harness and dampers for enhanced vibration isolation, allowing both functions to be achieved in a space-efficient manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate wiring structure and vibration isolation structure are established, then both functions are achieved, but more space is required
Solution Approach 1:
The wire harness is integrated into the vibration isolation structure by passing it through the gap between the upper case and floor panel, where it is covered by the elastic member. This merging of wiring function and vibration isolation function eliminates the need for separate structures, thereby saving space while maintaining both wiring and vibration isolation capabilities.
Solution Approach 2:
The elastic member serving as the vibration isolation structure simultaneously functions as a protective covering for the wire harness. The gap between the upper case and floor panel serves dual purposes: providing vibration isolation space and routing path for the wire harness. This multi-functionality reduces the overall space requirement.
2Volume of moving object
If wire harness passes through gap between upper case and frame member, then space is saved, but wire harness may be affected by vibrations
Solution Approach 1:
The elastic member acts as an intermediary between the wire harness and the vibrating structures (upper case and floor panel). By covering the wire harness and being sandwiched between the structural components, the elastic member absorbs and dampens vibrations, protecting the wire harness from vibration-induced damage while allowing the wire harness to pass through the gap.
Solution Approach 2:
The wire harness is pre-protected by the elastic member before being subjected to vibrations. The elastic member is positioned in advance to cover the wire harness in the gap region, providing cushioning and protection against upcoming vibrations during vehicle operation.
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 effectively integrates the wiring and vibration isolation structures, reducing space requirements and minimizing noise and damage from vibrations, while improving the overall anti-vibration effect of the upper case.
Implementation Method 1
The covering portion is made of an elastic member that covers an outer circumference of the wire harness
Implementation Method 2
The damper member is in contact with each of the second case-side portion and the second frame-side portion, and is sandwiched between the second case-side portion and the second frame-side portion
Data Source
AI summary
A vehicle includes a battery case, a frame member, and a wire harness. The battery case includes an upper case and a lower case and houses a battery. The frame member faces the upper case. The upper case includes a first case-side portion. The frame member includes a first frame-side portion that faces the first case-side portion. The wire harness is disposed so as to pass through a gap between the first case-side portion and the first frame-side portion, and includes a covering portion made of an elastic member that covers an outer circumference of the wire harness. The covering portion is in contact with the first case-side portion and the first frame-side portion, and is sandwiched between the first case-side portion and the first frame-side portion.