Battery Casing Carrying Plate With Local Reinforcement for Stiffness
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Solution Overview
Problem
The structural strength of battery cells is inadequate, leading to potential deformation or breakage in local regions, which compromises the safety of batteries as their capacity increases.
Innovation Solution
A casing body design featuring a carrying plate with alternating reinforcing and carrying regions of varying thicknesses, where the reinforcing regions have a larger thickness than the carrying regions, improving the overall rigidity and safety performance by targetedly strengthening weak areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the thickness of the carrying plate is uniformly increased to improve structural strength, then the rigidity and carrying capacity improve, but the weight and material cost increase significantly
Solution Approach 1:
The carrying plate is designed with non-uniform thickness, featuring reinforcing regions with greater thickness (H1) in areas requiring higher strength and carrying regions with smaller thickness (H2) in areas with lower strength requirements. This local differentiation allows the structure to achieve necessary strength while minimizing overall weight and material consumption.
Solution Approach 2:
The carrying plate is segmented into multiple functional regions: reinforcing regions (first plurality) for high-strength support, carrying regions (second plurality) for battery cell placement, and transition regions for stress distribution. This segmentation enables optimized material distribution according to local structural demands.
2Stability of the object's composition
If the thickness of the carrying plate is increased to improve rigidity, then the local stiffness improves, but the energy density decreases due to increased weight
Solution Approach 1:
The carrying plate implements local quality differentiation through varying thickness across different regions. Reinforcing regions have greater thickness to provide high local stiffness where structural support is critical, while carrying regions have reduced thickness to minimize weight and maximize energy density. This localized optimization ensures stiffness is provided only where absolutely necessary.
3Force
If the thickness of the carrying plate is uniformly increased to improve carrying capacity, then the load-bearing ability improves, but the material cost increases
Solution Approach 1:
The carrying plate uses local quality variation with different thickness zones optimized for specific functional requirements. Reinforcing regions with greater thickness provide high carrying capacity where loads are concentrated, while thinner carrying regions reduce overall material consumption and cost. This approach achieves necessary load-bearing capacity with minimal material usage.
4Reliability
If reinforcing regions with greater thickness are introduced to strengthen weak areas, then the structural integrity improves, but the device complexity increases
Solution Approach 1:
The carrying plate is segmented into distinct functional regions (reinforcing regions, carrying regions, and transition regions) with different thickness characteristics. This segmentation allows each region to be optimized for its specific function while maintaining overall structural integrity through the coordinated arrangement of these regions.
Solution Approach 2:
The design applies local quality differentiation by varying the thickness of the carrying plate according to local structural demands. Reinforcing regions have greater thickness for enhanced integrity, while other regions maintain smaller thickness. This localized approach improves reliability without requiring uniform complexity throughout the entire structure.
Data Source
AI summary
A casing body of a battery includes an edge frame enclosing and forming a first opening, and a carrying plate configured to connect a battery cell; the carrying plate covers the first opening, the carrying plate includes at least one carrying region and at least one reinforcing region, and a thickness of the reinforcing region is larger than a thickness of the carrying region.