Deformable Energy Absorption Housing for EV Battery Protection
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Solution Overview
Problem
Existing electric vehicle storage cell units lack effective mechanisms to dissipate collision energy without damaging the storage cells or control devices during accidents.
Innovation Solution
A storage cell unit with a housing featuring a deformable energy absorption region designed to absorb collision energy, separate from a non-deformable storage cell protection region, which is connected to the vehicle's longitudinal members to enhance structural integrity and protect the storage cells and control devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the housing is made rigid to protect storage cells, then protection of storage cells is improved, but collision energy cannot be dissipated
Solution Approach 1:
The housing is divided into multiple regions with different mechanical properties: a deformable energy absorption region and a rigid storage cell protection region. This segmentation allows the housing to simultaneously absorb collision energy through deformation in specific zones while maintaining rigid protection for the storage cells in other zones.
Solution Approach 2:
Different regions of the housing are assigned different local qualities - the energy absorption region is designed with deformable characteristics to dissipate energy, while the storage cell protection region is designed with rigid characteristics to protect the storage cells. This local differentiation resolves the contradiction between energy dissipation and protection.
2Loss of energy
If the housing is made deformable to absorb collision energy, then collision energy dissipation is improved, but protection of storage cells deteriorates
Solution Approach 1:
The housing is segmented into distinct functional zones: deformable energy absorption regions positioned to receive collision forces, and rigid storage cell protection regions that maintain structural integrity. This spatial segmentation ensures that deformation occurs in designated areas while storage cells remain protected.
Solution Approach 2:
The energy absorption region acts as an intermediary element between the external collision force and the storage cells. It absorbs and dissipates collision energy through controlled deformation, preventing the full force from reaching the storage cells while still providing protection.
3Loss of energy
If deformation elements are added between battery elements, then collision energy absorption is improved, but device complexity increases
Solution Approach 1:
The energy absorption function is merged into the housing structure itself rather than being implemented as separate deformation elements between battery elements. The housing walls in the energy absorption region are designed with deformable characteristics, combining the protective and energy-absorbing functions into a single integrated structure.
Solution Approach 2:
The housing serves multiple functions: it provides structural protection for storage cells, acts as an energy absorption mechanism through deformable regions, and maintains the positioning of storage cells. This multi-functionality eliminates the need for separate deformation elements, reducing overall device complexity.
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 effectively dissipates collision energy, protecting the storage cells and control devices from damage during collisions, while maintaining structural integrity and environmental sealing of the storage cell unit.
Implementation Method 1
The housing has an energy absorption region which is designed to be deformable in the event of a collision in order to absorb energy
Data Source
AI summary
A storage cell unit for a motor vehicle having an electric drive has a housing, in which storage cells are arranged. The housing has an energy absorption region, which is deformable in event of a collision for the purpose of energy absorption.