Perpendicular Battery Cell Layout for Stress and Heat Dispersion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electric vehicle batteries face safety issues due to weak stiffness and strength, leading to performance degradation and potential safety hazards from impact and stress accumulation during operation.
Innovation Solution
A battery design featuring a first battery cell group and a second battery cell group arranged perpendicularly within a box, where each group's cells are attached through their largest walls, allowing stress and heat to be directed differently, enhancing overall stiffness and strength, and improving safety performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If battery cells are arranged in a single direction with large attachment areas, then manufacturing ease and structural simplicity are improved, but stress and heat accumulate in one direction causing safety hazards
Solution Approach 1:
The patent transitions from single-directional battery cell arrangement to multi-directional (perpendicular) arrangement. Specifically, battery cells are arranged in both longitudinal and lateral directions, creating a two-dimensional layout that disperses stress and heat accumulation pathways across different spatial dimensions, thereby resolving the safety issue while maintaining manufacturing simplicity
2Reliability
If battery cells are arranged perpendicular to each other, then stress and heat accumulation are prevented in a single direction improving safety, but device complexity increases
Solution Approach 1:
The battery pack is segmented into multiple battery cell groups arranged in different directions. Each group consists of battery cells oriented either longitudinally or laterally, allowing independent optimization of each segment's arrangement while achieving overall safety through the combined multi-directional configuration
3Productivity
If battery cells are tightly packed to maximize space utilization, then productivity and energy density are improved, but stress from swelling accumulates reducing reliability
Solution Approach 1:
Different regions of the battery pack employ different arrangement strategies. Battery cells in the longitudinal direction are arranged with larger attachment areas for structural stability, while cells in the lateral direction provide stress dispersion. This localized differentiation of arrangement quality optimizes both space utilization and stress resistance in respective regions
Data Source
AI summary
A battery includes a box and first and second battery cell groups accommodated in the box. The first and second battery cell groups comprise first and battery cells, respectively, that are polyhedral structures. A wall with a largest area of the first battery cell serves as a first wall thereof, and a wall with a largest area of the second battery cell serves as a second wall thereof. The first battery cells are arranged in a first direction, and adjacent first battery cells are mutually attached through the first walls of the adjacent first battery cells. The second battery cells are arranged in a second direction, and adjacent second battery cells are mutually attached through second walls of the adjacent second battery cells. The first direction is perpendicular to the second direction.