Hollow Longitudinal Support Reinforcement for EV Battery Crash Absorption
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Solution Overview
Problem
Existing storage cell units for electric vehicles are heavy and require significant installation space, with limited capability to absorb collision energy effectively.
Innovation Solution
A storage cell unit with a hollow longitudinal support and a multi-compartment reinforcement element, where the reinforcement element is designed to absorb collision energy through deformation, providing increased flexural stiffness and energy absorption without adding weight, using materials like aluminum alloys and fiber-reinforced plastics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional solid longitudinal supports are used to absorb collision energy, then collision energy absorption capability is improved, but weight increases
Solution Approach 1:
The longitudinal support is designed as a hollow section with at least one cavity extending in the longitudinal direction, creating a porous-like structure that reduces material usage and weight while maintaining collision energy absorption capability through controlled deformation of the hollow structure
Solution Approach 2:
The reinforcement element is made from fiber-reinforced plastic material, combining different materials to achieve high strength and energy absorption properties with reduced weight compared to traditional solid metal supports
2Strength
If reinforcement elements are added to increase flexural stiffness, then structural strength is improved, but device complexity increases
Solution Approach 1:
The reinforcement element is disposed inside the cavity of the hollow longitudinal support, creating a nested structure where one component is placed within another, increasing flexural stiffness without requiring additional external space or complex assembly mechanisms
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 allows for effective absorption of collision energy at a low weight, protecting the component parts within the housing during a collision, while maintaining a lightweight and compact design.
Implementation Method 1
The reinforcement element in the course of the collision in which the longitudinal support is deformed may be deformed by failing due to brittle and/or plastic properties
Data Source
AI summary
The invention relates to a storage cell unit which has a housing and at least one longitudinal support which forms a lateral wall of the housing or is arranged adjacently to the lateral wall of the housing. The longitudinal support is designed as a hollow support which has at least one hollow chamber that extends in the longitudinal direction of the longitudinal support and has a closed cross-section. The hollow chamber is equipped with a reinforcing element which extends over the majority of the length of the longitudinal support. The reinforcing element has a multichamber structure with a number of chambers adjoining one another.