Battery Container Clamped Frame Structure
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Battery containers for electric vehicles face challenges in balancing weight reduction with the need for sufficient strength and impact resistance, as thick metal plates increase weight and may not provide adequate strength in all directions.
Innovation Solution
A battery container design featuring a closed cross-section structure formed by outer and inner frames attached to the side wall members, with the frames extended in the same direction to clampingly hold the side wall members, and a thicker outer frame for enhanced strength, while using a fiber-reinforced synthetic resin for the cover to maintain light weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thick metal plate is used to form the battery container to cope with collision, then the strength and impact resistance are improved, but the weight is excessively increased
Solution Approach 1:
The battery container is divided into multiple functional components: a base structure, an outer frame with first and second side members, and an inner frame with third and fourth side members. This segmentation allows each component to contribute to overall strength while using thinner individual plates, reducing total weight compared to a single thick plate design.
Solution Approach 2:
The battery container employs a composite structure combining metal plates of different thicknesses arranged in specific configurations. The outer frame and inner frame create a multi-layer composite system that achieves high strength-to-weight ratio, utilizing the synergistic effect of multiple thin plates rather than one thick plate.
2Weight of moving object
If a battery container is formed to provide adequate strength in one direction to reduce weight, then the weight is reduced, but sufficient strength and toughness cannot be formed in other directions
Solution Approach 1:
Different regions of the battery container have different structural characteristics optimized for their specific functions. The outer frame provides primary structural support, while the inner frame with its third and fourth side members provides additional reinforcement in perpendicular directions. This local optimization ensures adequate strength in all directions without uniformly increasing weight throughout the entire structure.
Solution Approach 2:
The design transitions from a two-dimensional plate structure to a three-dimensional spatial framework by adding the inner frame with third and fourth side members that extend in directions perpendicular to the outer frame members. This dimensional expansion provides strength in multiple directions simultaneously while maintaining lightweight construction.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A battery container 10 which is to house a battery 16 for a vehicle and which is to be attached between at least two frames 102 disposed in the vehicle, includes: a bottom plate 26; a wall member 28 which is raised from a circumference of the bottom plate and which includes a side wall member 38, 40 disposed along the frames 102; an outer frame 62 which is attached to an outer side of the side wall member 38, 40; and an inner frame 42 which is attached to an inner side of the side wall member 38, 40. The outer frame 62 and the inner frame 42 are extended in a substantially same direction along the side wall member 38, 40, and the side wall member is clampingly held between the outer frame 62 and the inner frame 42.