Reinforced Battery Case Structure for Earthquake and Impact Loads
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Solution Overview
Problem
Conventional battery cases, especially those installed outdoors, lack sufficient strength to withstand external forces such as vibrations and impacts from earthquakes and flying objects.
Innovation Solution
A battery case design incorporating multiple support pillar members, L-shaped plates, reinforcing members, and tiered support structures that enhance rigidity and strength by joining various components together, including welding and mechanical fastening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional battery case structure with hexahedral shape and basic frames is used, then manufacturing is simple, but strength and rigidity are insufficient to withstand external forces like earthquakes and flying objects
Solution Approach 1:
The battery case is divided into multiple functional components: frames, cover panels, support pillar members, L-shaped plates, and bottom plates. Each component serves a specific structural purpose, allowing the case to achieve high strength through distributed load-bearing elements rather than relying on a single monolithic structure.
Solution Approach 2:
The battery case employs composite construction by combining multiple materials and structural elements. The frames, support pillars, and plates are joined together to create a composite structure that leverages the strengths of each component, achieving superior overall strength and rigidity compared to single-material constructions.
2Stability of the object's composition
If conventional battery case with basic frames is used, then device complexity is low, but rigidity is insufficient to protect battery stack against violent vibrations and impacts
Solution Approach 1:
Support pillar members are pre-positioned at critical locations (corners and intermediate positions) of the battery stack before final assembly. These pillars are extended to predetermined lengths and positions to provide preemptive structural support, ensuring rigidity is built into the structure before external forces are applied.
Solution Approach 2:
L-shaped plates are introduced to provide reinforcement in multiple dimensions. These plates connect vertical support pillars to horizontal bottom plates, creating three-dimensional structural bracing that enhances rigidity by distributing forces across multiple spatial dimensions rather than relying solely on linear frame structures.
Data Source
AI summary
A battery case includes L-shaped plates. One L-shaped plate is composed of a bottom part and a wall part. The bottom part is located between base ends of support pillar members and a bottom plate and joined to the bottom plate. The wall part is placed against outer lateral surfaces of the support pillar members and mechanically joined to these outer lateral surfaces. Another L-shaped plate is composed of a bottom part and a wall part. The bottom part is located between base ends of support pillar members and the bottom plate and joined to the bottom plate. The wall part is placed against outer lateral surfaces of the support pillar members and mechanically joined to these outer lateral surfaces.