Battery Floor Housing With 3D Gastight Joint for Body Integration
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Solution Overview
Problem
Existing energy storage floor assemblies for motor vehicles are not effectively adaptable to the shape of the vehicle body or components of the energy storage device, leading to suboptimal static, dynamic, and crash performance due to their separate embodiment from the vehicle body shell.
Innovation Solution
An energy storage floor assembly with a storage housing featuring a three-dimensional gastight connection between housing parts, allowing for improved adaptation to the vehicle body shape and integration with the vehicle floor, which serves both as a structural component and a housing part, enabling better accommodation of energy storage device components and connection terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flat flange connection is used to attach the storage housing to the vehicle floor, then the storage housing can be separately embodied and attached to the motor vehicle body shell, but the storage housing cannot be effectively adapted to the shape of the motor vehicle body and components of the energy storage device
Solution Approach 1:
The vehicle floor is merged with the storage housing by making the vehicle floor itself a housing part of the storage housing. This integration eliminates the need for separate attachment structures and allows the storage housing to adapt to the vehicle body shape while reducing overall complexity.
Solution Approach 2:
The flange connection transitions from a two-dimensional flat profile to a three-dimensional uneven profile with vertical extensions. This dimensional change allows the connection to accommodate both the vehicle floor shape and energy storage device components effectively.
2Ease of manufacture
If the storage housing is configured as a separate unit from the motor vehicle body shell, then the housing can be attached via screw connections, but the vehicle floor loses additional functional integration and requires separate attachment structures
Solution Approach 1:
The vehicle floor serves dual functions: it maintains its structural role in the motor vehicle body and simultaneously acts as a housing part of the storage housing. This multi-functionality integrates the energy storage system with the vehicle body while simplifying manufacturing.
3Adaptability or versatility
If a three-dimensional flange profile with uneven course is used, then the storage housing can be adapted to the vehicle body shape and accommodate components favorably, but the connection structure becomes more complex than a flat flange connection
Solution Approach 1:
The flange connection extends in the vertical vehicle direction, adding a third dimension to the connection structure. This allows the connection to adapt to the vehicle body shape and accommodate components while the uneven course provides necessary structural variation.
Solution Approach 2:
The flange connection has different profiles at different locations: it extends vertically in some regions to accommodate components like connection terminals, while maintaining a simpler profile in other regions. This local variation optimizes adaptation without unnecessary overall complexity.
Data Source
AI summary
An energy-store floor assembly for a motor vehicle includes an electrical energy-store device which has a plurality of battery modules and is accommodated in a multi-part store housing and arranged on the bottom side of a vehicle floor of the motor vehicle. In order that the store housing can be adapted to the shape of the motor vehicle body and/or to components of the energy-store device in an improved way, housing parts of the store housing are interconnected by at least one gas-tight connection, which has an uneven course with respect to the vehicle vertical direction in at least one length region.