Drive Battery Housing Separate Collision Load Paths
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Solution Overview
Problem
Existing motor vehicle designs with drive batteries do not effectively utilize installation space for improved collision energy absorption during lateral collisions, as the current configurations do not separate collision load paths adequately, limiting the vehicle's ability to dissipate collision energy efficiently.
Innovation Solution
A motor vehicle design featuring a drive battery housing arranged on the vehicle's floor structure with separate collision load paths, where the drive battery housing and side sills create distinct pathways for energy dissipation, allowing for independent design and enhanced absorption of collision loads without overlap, thereby contributing to the vehicle's structural rigidity and energy dissipation capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the drive battery housing and side sills are integrated or overlapping in the vehicle transverse direction, then the structural complexity is reduced and manufacturing is simplified, but the collision energy absorption capability is compromised and the load paths cannot be independently optimized
Solution Approach 1:
The patent divides the collision load path into two separate segments: one through the side sills and floor structure, and another through the drive battery housing. This segmentation allows each component to be independently optimized for its specific function while maintaining overall structural integrity and collision energy absorption capability
Solution Approach 2:
The drive battery housing serves multiple functions: it protects the drive battery, provides a mounting structure for the drive battery, and acts as an independent collision load path. This multi-functionality allows the housing to contribute to both energy storage and collision energy absorption without requiring additional dedicated structures
2Loss of energy
If the drive battery housing is positioned to create separate collision load paths from the side sills, then the collision energy dissipation is improved, but the installation space utilization is reduced and the mounting complexity increases
Solution Approach 1:
The patent positions the drive battery housing in the vehicle longitudinal direction (below the side sills) rather than allowing transverse overlap, creating separate load paths through dimensional arrangement. This spatial differentiation enables independent optimization of collision load paths while maintaining efficient installation space utilization
3Reliability
If the drive battery housing and vehicle body are designed with separate collision load paths, then the structural integrity during collision is improved, but the manufacturing and assembly complexity increases
Solution Approach 1:
The patent segments the collision load path into independent sections through the side sills and through the drive battery housing, allowing each segment to be designed, manufactured, and tested independently before final assembly, thereby managing complexity while maintaining structural integrity
Solution Approach 2:
The drive battery housing serves as both a protective enclosure for the drive battery and as a structural component that independently absorbs collision loads. This self-service approach allows the housing to contribute to both energy storage and collision energy absorption without requiring additional dedicated structures
Data Source
AI summary
A motor vehicle has a drive battery which is accommodated in a drive battery housing. The drive battery housing is arranged and fastened on a floor structure, in particular on an underside, of a body of the motor vehicle. The drive battery housing has a lateral, in particular a left-hand and a right-hand, outer housing carrier structure which is arranged below, in particular left-hand and right-hand, side sills of the body in such a way that a first collision load path in a vehicle transverse direction, which is formed (substantially only) by the side sills and the floor structure of the body, and a second collision load path in a vehicle transverse direction, which is formed (substantially only) by the drive battery housing, are (substantially) completely separate from one another.