Vehicle Battery Protective Housing Crash Force Distribution
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Solution Overview
Problem
Existing protective housings for vehicle batteries lack sufficient collision protection, as they are not adequately designed to absorb and distribute crash forces effectively, potentially leading to battery damage during accidents.
Innovation Solution
A protective housing with separate transverse and longitudinal walls forming a lateral enclosure, fastened to both longitudinal girders of the vehicle, and optionally supported by a cross member and curved support girder, enhancing rigidity and force absorption capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the protective housing is fastened to only one longitudinal girder, then the device complexity is reduced, but the collision protection and force absorption capability deteriorate
Solution Approach 1:
The protective housing is fastened to both longitudinal girders simultaneously, merging the attachment functions to create a unified support system that distributes crash forces across multiple attachment points, thereby improving collision protection while maintaining structural integrity
2Manufacturing precision
If the enclosure is constructed from separate transverse and longitudinal wall components, then the manufacturing precision and assembly flexibility are improved, but the device complexity increases
Solution Approach 1:
The protective housing enclosure is divided into separate transverse and longitudinal wall components that can be manufactured independently with high precision and then assembled together, allowing each component to be optimized for its specific structural requirements while maintaining overall assembly flexibility
3Strength
If additional support structures (cross member and curved support girder) are added, then the force absorption capability is improved, but the device complexity and weight increase
Solution Approach 1:
A curved support girder with arch-like geometry is introduced to provide efficient force distribution through its curved shape, which naturally channels and disperses crash forces across the protective housing structure, achieving enhanced strength with optimized material usage
Solution Approach 2:
A cross member is added to connect the two longitudinal girders, introducing a transverse dimension to the support structure that creates a three-dimensional load-bearing framework, thereby improving force absorption capability through spatial distribution of stresses
Data Source
AI summary
A protective housing for a battery in a motor vehicle includes two transverse walls and two longitudinal walls, which together form a lateral enclosure for a battery receptacle chamber. The protective housing is fastened to at least one longitudinal girder of the vehicle in the installed state in an installation chamber of the vehicle. The transverse walls and the longitudinal walls are each formed by separate components, which are assembled into the enclosure. The installation chamber is located between two longitudinal girders of the vehicle chamber, and the enclosure is fastened to both longitudinal girders.