Vehicle Floor Battery Structure for Collision Energy Absorption
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Solution Overview
Problem
Existing motor vehicle designs face challenges in integrating traction batteries in a way that maximizes energy absorption during collisions while optimizing space and facilitating maintenance, as conventional solutions either require separate housings or compromise on power output and range.
Innovation Solution
A motor vehicle design where the storage cell assembly is integrated into the floor assembly, utilizing a multiple-chamber hollow-cylindrical structure within the vehicle body, which serves as both a housing and a structural element, enhancing rigidity and energy absorption, and allowing for easier maintenance by eliminating the need for a separate housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate fluid-tight housing is used for the traction battery, then the battery cells are protected and can be mounted as an assembly part, but the installation space is reduced and maintenance complexity increases
Solution Approach 1:
The patent combines the housing function with the floor assembly by integrating the storage cell assembly directly into the floor structure. The floor assembly serves dual purposes: as a structural component of the vehicle body and as a housing for the battery cells, eliminating the need for a separate fluid-tight housing while maintaining protection and reducing complexity
Solution Approach 2:
The floor assembly is designed to perform multiple functions simultaneously: it provides structural support for the vehicle body, serves as a mounting structure for the storage cell assembly, and acts as a protective housing. This multi-functional design eliminates redundant components and optimizes installation space
2Quantity of substance
If the traction battery is designed to be as wide as the vehicle body, then the power output and range are maximized, but the energy absorption capability in collisions may be compromised
Solution Approach 1:
The patent implements local reinforcement by integrating the multiple-chamber hollow-cylindrical structure at specific locations within the floor assembly where the storage cells are mounted. This provides enhanced energy absorption capability precisely where needed, without requiring the entire battery housing to be overly robust, thus maximizing space utilization while maintaining safety
3Ease of operation
If the floor assembly is designed with integrated storage cell chambers, then the installation space is optimized and maintenance ease is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent segments the floor assembly into distinct functional zones by incorporating multiple hollow-cylindrical chambers that can accommodate individual storage cells or groups of cells. This segmentation allows for modular assembly and maintenance while maintaining the overall integrated structure, balancing manufacturing complexity with operational ease
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 enhances collision energy absorption, increases storage capacity, and simplifies maintenance by utilizing the vehicle body as the housing for the battery cells, resulting in improved energy storage and reduced complexity in manufacturing.
Implementation Method 1
the multiple-chamber hollow-cylindrical structure can transmit and/or absorb sufficient collision energy
Implementation Method 2
the multiple-chamber hollow-cylindrical structure can assist a rigidity or strength of the floor assembly
Data Source
AI summary
A motor vehicle includes a floor subassembly and a storage cell subassembly. The floor subassembly is an integral part of a body of the motor vehicle. In other words, the floor subassembly is part of the body shell. The storage cells of the storage cell subassembly are disposed in the floor subassembly. The storage cells are accommodated in hollow-cylinder chambers of a multi-chamber hollow cylinder structure extending in the vertical direction of the vehicle.