Releasable Form-Fitting Fixing System for Traction Battery Protection
Solution Overview
Problem
Existing traction battery systems for motor vehicles face challenges in efficient installation space utilization and quick serviceability, as well as maintaining crash performance and reducing installation space, particularly due to the use of non-releasable and time-consuming attachment methods for protective structures.
Innovation Solution
A traction battery system featuring a releasable fixing system with a form-fitting connection using a hook-and-loop closure or pressure closure, allowing for quick detachment and reattachment of the protective structure, which is plate-shaped with load introduction elements to distribute forces and reduce installation space, and integrally bonded connections for cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If a releasable fixing system with hook-and-loop closure is used, then ease of repair and maintenance time are improved, but connection strength and reliability may worsen
Solution Approach 1:
The protective structure is divided into modular components that can be independently removed and replaced. The fixing system uses distributed attachment points rather than a single connection mechanism, allowing partial maintenance without complete disassembly.
Solution Approach 2:
The fixing system transitions from a static permanent connection to a dynamic releasable connection. The hook-and-loop closure allows the protective structure to be easily attached and detached multiple times while maintaining sufficient holding strength during normal operation.
2Volume of moving object
If a plate-shaped protective structure with load introduction elements is used, then installation space and vehicle height are reduced, but protection performance against road contact may worsen
Solution Approach 1:
The protective structure features locally reinforced areas with load introduction elements at critical contact points, while maintaining an overall thin plate design. This concentrates protective function where most needed without increasing overall volume.
Solution Approach 2:
The protective structure combines a thin plate base material with integrated load introduction elements made of high-strength materials. This composite approach provides enhanced protection at key locations while maintaining minimal overall thickness.
3Reliability
If non-releasable screw connections are used, then connection strength and reliability are improved, but maintenance time and serviceability worsen
Solution Approach 1:
The fixing system transitions from a static permanent connection to a dynamic releasable connection. The hook-and-loop closure allows the protective structure to be easily attached and detached multiple times while maintaining sufficient holding strength during normal operation.
Solution Approach 2:
The fixing system is designed for repeated attachment and detachment cycles. The hook-and-loop closure can be quickly released and re-engaged multiple times without degradation, enabling efficient maintenance while maintaining reliable connection during operation.
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
The solution enables a cost-effective, installation space-optimized traction battery system with improved crash performance and reduced vibration tendencies, allowing for efficient maintenance and reduced height, while maintaining the protective structure's functionality.
Implementation Method 1
the fixing system is designed to have a female element and a male element, wherein the female element and the male element are designed to produce a form-fitting connection with one another
Implementation Method 2
The fixing system is preferably designed in the form of a hook-and-loop closure or of a pressure closure
Implementation Method 3
the protective structure is plate-shaped with load introduction elements to distribute forces and reduce installation space
Data Source
AI summary
A traction battery system for a motor vehicle includes a traction battery, which is designed such that it can be nonmovably received in a body of the motor vehicle, and a protective structure, which is arranged between the traction battery and a roadway, wherein the protective structure is connected to the traction battery by a fixing system. The fixing system is a releasable fixing system designed to have a female element and a male element, wherein the female element and the male element are designed to produce a form-fitting connection with one another.