Modular Traction Battery Housing Segmentation for Sealing and Installation
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Solution Overview
Problem
Existing modular systems for traction batteries in motor vehicles face challenges in cost-effective production, sealing, and flexibility due to large, inflexible housings, which limit production methods and increase complexity in installation and sealing.
Innovation Solution
A modular system with individually sealed battery modules that have their own fluid-tight modular housing and mechanical interfaces for attachment to a motor vehicle, allowing flexible arrangement and interconnection, along with integrated cooling and data interfaces, and the option for direct or indirect electrical coupling, enhancing modularity and crash performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large single-piece housing is used to enclose the traction battery, then the battery is fully enclosed, but production methods are limited and sealing becomes difficult
Solution Approach 1:
The patent divides the battery system into multiple independent battery modules, each with its own housing. This segmentation allows each module to be manufactured separately using standard production methods, avoiding the limitations of producing large single-piece housings while maintaining reliable sealing through modular construction.
2Adaptability or versatility
If a common housing encloses the entire traction battery, then the battery is protected, but installation flexibility is reduced
Solution Approach 1:
The battery system is segmented into multiple independent modules that can be installed separately in the vehicle. This increases installation flexibility as modules can be arranged to fit available space, while the modular housing structure simplifies each individual unit compared to a complex large housing.
Solution Approach 2:
The modular design allows the battery system configuration to be dynamically adapted to different vehicle platforms and installation spaces. Modules can be added, removed, or rearranged based on specific vehicle requirements, providing adaptability without requiring a completely different housing design for each application.
3Adaptability or versatility
If multiple battery modules are connected in a large housing, then the traction battery is formed, but the connecting becomes inflexible and difficult
Solution Approach 1:
Each battery module is an independent, self-contained unit with standardized interfaces. This segmentation enables flexible configuration of multiple modules to form different traction battery systems, while standardized connection interfaces simplify the joining process compared to custom fittings required for non-modular designs.
Solution Approach 2:
The modular battery modules employ universal connection interfaces that can be used across different module configurations and vehicle applications. This universality allows the same module design to be connected in various arrangements (series, parallel, or combinations) without requiring different connection mechanisms, enhancing both flexibility and ease of operation.
Data Source
AI summary
A modular system for traction batteries of motor vehicles, having multiple battery modules includes respective battery cells, which can be electrically connected to one another in modular manner to produce different variants of traction batteries, wherein the battery modules each have a modular housing, in which the respective battery cells are arranged in fluid-tight manner; the battery modules each have a mechanical interface by means of which the battery modules can be attached to an underside of a motor vehicle.