Vehicular Battery Case Side Frame Energy Absorption Design
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Solution Overview
Problem
Existing vehicular battery cases fail to adequately protect batteries during side-impact collisions as impact absorption parts can deform and collide with the battery, causing damage.
Innovation Solution
A vehicular battery case design featuring two side frames with integrated energy absorption and side wall parts, including plate-shaped and rib-like structures that enhance rigidity and absorb energy, preventing deformation and contact with the battery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If impact absorption parts are provided on rocker panels to absorb collision energy, then energy absorption capability is improved, but the impact absorption part may deform and contact the battery causing damage
Solution Approach 1:
The side frame is divided into two distinct functional parts: the energy absorption part (front portion with plate-shaped components) and the side wall part (rear portion with rib-like reinforcements). This segmentation allows each part to perform its specific function independently - the energy absorption part deforms to absorb collision energy while the side wall part maintains structural integrity to protect the battery
Solution Approach 2:
Different structural characteristics are applied to different parts of the side frame. The energy absorption part uses plate-shaped structures that are designed to deform, while the side wall part uses rib-like reinforcements that provide high rigidity. This local differentiation ensures that deformation occurs in the intended energy absorption zone without compromising the protective function near the battery
2Object-affected harmful factors
If the side wall part is made rigid to protect the battery, then protection capability is improved, but the overall structure may not absorb enough collision energy
Solution Approach 1:
The side frame is divided into two distinct functional parts: the energy absorption part (front portion with plate-shaped components) and the side wall part (rear portion with rib-like reinforcements). This segmentation allows each part to perform its specific function independently - the energy absorption part deforms to absorb collision energy while the side wall part maintains structural integrity to protect the battery
Solution Approach 2:
The side frame merges the energy absorption function and the protective function into a single integrated structure. The energy absorption part and side wall part are connected to work together as a unified system that both absorbs collision energy and protects the battery, rather than using separate components
3Ease of manufacture
If the side frame structure is simplified, then manufacturing ease is improved, but rigidity and energy absorption capabilities are reduced
Solution Approach 1:
The side frame is divided into two distinct functional parts: the energy absorption part (front portion with plate-shaped components) and the side wall part (rear portion with rib-like reinforcements). This segmentation allows each part to perform its specific function independently - the energy absorption part deforms to absorb collision energy while the side wall part maintains structural integrity to protect the battery
Solution Approach 2:
The side frame employs a composite structure combining plate-shaped parts and rib-like parts made from different material configurations. The energy absorption part uses materials and geometries optimized for deformation, while the side wall part uses materials and geometries optimized for rigidity, creating a composite structure that achieves both strength and energy absorption
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 enhanced rigidity and energy absorption capabilities of the battery case structure effectively reduce impact on the battery, preventing damage and improving protection during side-impact collisions.
Implementation Method 1
Each of the two side frames includes an energy absorption part... The energy absorption part includes a first plate-shaped part and a second plate-shaped part... The first rib-like part and the second rib-like part extend in the first direction and the second direction
Data Source
AI summary
Each of left and right side frames of a battery case enabling enhanced tolerance to a side-impact collision includes a side wall part being provided on a side on which the side frames face each other and an EA part being provided on the opposite side. The EA part includes an EA upper plate part and an EA lower plate part being vertically separated from each other. Top surfaces and bottom surfaces of the plate parts are plate-shaped parts perpendicular to the vertical direction. The side wall part includes a first rib-like part and a second rib-like part being vertically separated from each other. Top surfaces and bottom surfaces of the rib-like parts are plate-shaped parts perpendicular to the vertical direction. Extensions of center lines of the EA upper and lower plate parts in a thickness direction pass through insides of the first and second rib-like parts, respectively.