Battery Box Side-Wall Wiring Structure for Harness Protection
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Solution Overview
Problem
In electric vehicles, the exposure of batteries and their harnesses at the vehicle's bottom makes them vulnerable to damage, compromising safety due to external forces and deformation.
Innovation Solution
A box body design with a wiring portion on its outer wall to protect the harness and a lateral beam for enhanced structural strength, allowing the harness to pass through a wiring space, which also serves as a mounting structure for the battery, improving safety and balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the battery is mounted at the vehicle body with most of it exposed at the bottom, then the battery can be easily accessed and installed, but the harness becomes vulnerable to damage from external forces and compressional deformation
Solution Approach 1:
The wiring portion acts as an intermediary protective structure between the harness and the external environment. It provides a dedicated wiring space that guides and protects the harness from damage while maintaining accessibility for installation and maintenance.
2Ease of operation
If the wiring portion is disposed at the side wall of the box body, then the harness arrangement becomes more convenient due to large lateral operation space, but the structure becomes more complex
Solution Approach 1:
The lateral beam serves multiple functions: it reinforces the structural strength of the box body, provides a mounting position for the wiring portion, and enables convenient harness arrangement. This multi-functionality reduces the need for additional separate components.
3Device complexity
If the wiring portion has a wiring recess recessed towards the accommodation chamber, then the structure is simpler and cost is reduced, but the wiring space is more constrained
Solution Approach 1:
The wiring portion extends in the thickness direction of the box body, utilizing the third dimension to create adequate wiring space. This allows the harness to be routed through a sufficiently large space while maintaining a compact overall structure without requiring excessive lateral or vertical extension.
4Weight of moving object
If the lateral beam is constructed as the wiring portion, then the weight of the lateral beam is reduced and wiring is implemented simultaneously, but the structural strength may be compromised
Solution Approach 1:
The lateral beam is designed as a composite structure combining reinforcing elements for structural strength with an integrated wiring portion for harness routing. This composite design allows the beam to maintain adequate lateral structural strength while incorporating the wiring function and reducing overall weight compared to separate components.
Data Source
AI summary
The present disclosure relates to a box body (10), a battery (100), and an electric device. The box body (10) has a top surface (h). The top surface (h) of the box body (10) is configured to be brought in contact with an external device at which the battery (100) is mounted. An outer wall of the box body (10) is provided with a wiring portion (13a4) located below the top surface (h) of the box body (10) and having a wiring space configured to allow for passing of a harness.