Battery Pack Reinforcement Structure for Collision and Cell Expansion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery technologies face challenges in reducing the degree of damage to battery cells during collisions due to inadequate force-bearing performance and expansion limitations, leading to deformation and reduced service life.
Innovation Solution
A battery design incorporating a box with opposing limiting portions, reinforcing pieces, and a connecting piece that strengthens the structure, limits cell expansion, and enhances rigidity to protect battery cells from collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the battery structure uses a simple box design without additional reinforcing components, then the device complexity is low, but the force-bearing performance and rigidity are insufficient, leading to high degree of damage to battery cells during collision
Solution Approach 1:
The battery box is segmented into multiple functional components: limiting portions for constraining battery cell positions, reinforcing pieces for enhancing local rigidity, and connecting pieces for strengthening overall structural integrity. This segmentation allows each component to perform its specific function optimally while contributing to the overall force-bearing performance.
Solution Approach 2:
The battery box employs composite structural design combining different materials and components with complementary properties. The limiting portions, reinforcing pieces, and connecting pieces are made from materials selected for their specific mechanical properties, creating a composite structure that achieves superior strength-to-weight ratio and collision resistance.
2Reliability
If the battery box is designed with high rigidity and strength to protect battery cells during collision, then the degree of damage to battery cells is reduced, but the box deformation resistance may occupy more space and reduce energy density
Solution Approach 1:
Rather than uniformly thickening the entire battery box, reinforcing pieces are strategically placed at specific locations where collision forces are most likely to occur. This local reinforcement approach provides necessary structural strength and rigidity at critical points while minimizing the overall volume occupied by structural components, thereby preserving energy density.
Solution Approach 2:
The reinforcing pieces and connecting pieces extend in multiple spatial dimensions, creating a three-dimensional reinforcement network within the battery box. This multi-dimensional structural approach enhances rigidity and collision resistance more efficiently than simple linear or planar reinforcements, maximizing protective function while minimizing space occupation.
Data Source
AI summary
A battery includes a box, at least one battery cell group, reinforcing pieces, and a connecting piece. The box includes first and second limiting portions disposed opposite each other in a first direction. The at least one battery cell group is disposed in the box and located between the first limiting portion and the second limiting portion, and the battery cell group includes battery cells arranged in the first direction. The reinforcing pieces are disposed in the box and located between the first limiting portion and the second limiting portion. The reinforcing pieces are spaced apart in the first direction, and at least one of the battery cells is disposed between two adjacent ones of the reinforcing pieces. One end of the connecting piece is connected to the first limiting portion, and the other end of the connecting piece is connected to the second limiting portion.