Battery Mounting Structure With Local Reinforcement Plates
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Solution Overview
Problem
The integration of rechargeable battery packs in electric vehicles is challenging due to their increased weight and larger footprint, which can make them susceptible to various vehicle loads and require efficient load paths in different operating conditions.
Innovation Solution
A battery mounting structure comprising a shear plate and reinforcement plates, where the reinforcement plates are thicker than the shear plate and positioned between the shear plate and the battery housing, providing additional support and protection against debris and impact forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a single thick plate is used to support the battery housing assembly, then the structural strength and protection against impact forces are improved, but the weight of the mounting structure increases
Solution Approach 1:
The mounting structure is divided into multiple components: a shear plate extending in the longitudinal direction and multiple separate reinforcement plates positioned at specific locations. This segmentation allows the structure to achieve the required strength through distributed support rather than a single massive plate, thereby reducing overall weight while maintaining structural integrity.
Solution Approach 2:
Reinforcement plates are strategically positioned at locations where maximum support and protection are needed, such as between cross beams and at areas susceptible to impact forces. This localized reinforcement approach provides strength exactly where required without adding unnecessary weight to the entire mounting structure.
2Object-affected harmful factors
If reinforcement plates are added between the shear plate and battery housing assembly, then the protection against debris and impact forces is improved, but the device complexity increases
Solution Approach 1:
The protection system is segmented into multiple discrete reinforcement plates rather than a single complex protective shell. Each reinforcement plate is a simple component that can be independently positioned and attached, simplifying manufacturing and assembly while providing comprehensive protection at critical locations.
Solution Approach 2:
The reinforcement plates are integrated with the existing shear plate and cross beam structure to form a unified mounting system. The reinforcement plates work in conjunction with the cross beams and shear plate to provide combined structural support and impact protection, eliminating the need for separate protective components.
3Stress or pressure
If the battery pack is mounted with a larger footprint to distribute loads, then the stress on the vehicle frame is reduced, but the space available in the vehicle is reduced
Solution Approach 1:
Load distribution is achieved through localized reinforcement at specific points rather than requiring a uniformly large mounting footprint. The reinforcement plates are positioned at critical load-bearing locations, allowing the battery pack to be securely mounted with adequate load distribution while minimizing the overall space occupied in the vehicle.
Solution Approach 2:
The mounting structure utilizes the vertical dimension by positioning reinforcement plates between the shear plate and battery housing assembly. This vertical layering provides additional load distribution pathways without increasing the horizontal footprint, thereby preserving valuable vehicle space while effectively distributing stresses on the vehicle frame.
Data Source
AI summary
A battery mounting structure includes a shear plate and a plurality of separate reinforcement plates. The shear plate extends in a longitudinal direction of the vehicle and includes a first thickness. The reinforcement plates are configured to be disposed between the shear plate and the battery housing assembly and are mounted on an upper surface of the shear plate. The reinforcement plates are spaced apart from each other and include a second thickness. The second thickness is greater than the first thickness.