Node-Rib Aluminum Frame Section for Vertical Battery Impact
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Solution Overview
Problem
Existing energy absorbing members made of aluminum alloy primarily address axial impact, failing to provide adequate collision resistance and lightweight properties in the vertical direction for battery cases in electric vehicles.
Innovation Solution
A frame member design with a specific cross-sectional shape featuring nodes and ribs, optimized for vertical impact absorption, using an aluminum-alloy extruded material with limited ribs per node and evenly spaced nodes, including a central node, to enhance collision resistance and reduce weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If an aluminum alloy energy absorbing member is designed to absorb axial impact, then axial impact energy absorbability is improved, but collision resistance in the vertical direction remains insufficient
Solution Approach 1:
The patent transitions from axial impact absorption to lateral (vertical) impact absorption by changing the loading direction dimension. The frame member is specifically designed with a cross-sectional shape and rib configuration optimized for lateral compressive loads, representing a dimensional shift in the impact absorption function.
Solution Approach 2:
The patent modifies structural parameters including the cross-sectional shape, rib thickness, rib spacing, and node distribution to optimize lateral impact absorption. These parameter changes enable the structure to achieve both lightweight properties and improved collision resistance in the vertical direction.
2Weight of moving object
If the frame member structure is simplified to reduce weight, then lightweight properties are improved, but collision resistance may be compromised
Solution Approach 1:
The patent optimizes structural parameters such as wall thickness, rib dimensions, and node distribution to achieve the lightest possible weight while maintaining adequate collision resistance. The cross-sectional shape and material properties are specifically tuned to balance weight reduction with protective function.
Solution Approach 2:
The patent employs aluminum alloy materials that provide high strength-to-weight ratio, and potentially composite structures combining different materials or densities in different regions of the frame member to achieve optimal weight-performance balance for battery protection.
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 frame member achieves improved collision resistance in the vertical direction while maintaining a reduced weight, enhancing battery protection and increasing the traveling distance of electric vehicles.
Implementation Method 1
an energy absorbing member made of an aluminum alloy, which has an effect of absorbing an impact when subjected to a compressive impact load
Data Source
AI summary
A frame member has an aluminum-alloy extruded material in which a plurality of nodes are set in a cross-sectional space of an outer peripheral wall and a plurality of ribs connecting the nodes are provided inside the outer peripheral wall, and the frame member has a cross-sectional shape in which a maximum number of the ribs connected to one of the nodes is three or less and there are four or more nodes that are not connected to the ribs.