Secondary Battery Electrode Assemblies for Irregular Space Utilization
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Solution Overview
Problem
Existing secondary battery structures are limited in their ability to effectively utilize non-quadrangular or irregular spaces due to the need for uniform electrode assemblies, leading to inconsistent output and inefficiencies in capacity usage.
Innovation Solution
The secondary battery design incorporates electrode assemblies with varying cross-sectional thicknesses and electrode plate areas, where a smaller electrode plate area is compensated by a larger cross-sectional thickness, ensuring consistent power output and efficient capacity utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electrode assemblies have the same size and capacity (uniform configuration), then the battery pack structure is simple and easy to manufacture, but the battery cannot effectively utilize non-quadrangular or irregular spaces
Solution Approach 1:
The patent applies local quality by configuring electrode assemblies with different shapes and capacities according to the specific spatial requirements of different regions within the battery pack. Instead of uniform electrode assemblies, each electrode assembly is designed with local characteristics (different dimensions, shapes) that match the local space availability, thereby achieving effective utilization of non-quadrangular or irregular spaces while maintaining manageable complexity through a systematic design approach
2Adaptability or versatility
If electrode assemblies have different shapes and capacities to fit irregular spaces, then space utilization is improved, but the output becomes inconsistent and electric load concentrates between electrode assemblies
Solution Approach 1:
The patent applies parameter changes by adjusting multiple parameters of the electrode assemblies (shape, size, capacity, arrangement configuration) to achieve a balanced system. Although individual electrode assemblies have different parameters to fit irregular spaces, the overall system is designed so that the total capacity and power output remain consistent and balanced, preventing electric load concentration through careful parameter selection and configuration
3Reliability
If all electrode assemblies have the same capacity, then the output is constant and reliable, but the battery pack cannot adapt to non-quadrangular or irregular spaces
Solution Approach 1:
The patent applies asymmetry by designing electrode assemblies with different shapes and dimensions (asymmetric configurations) to fit non-quadrangular or irregular spaces within the battery pack. Despite these asymmetric individual configurations, the system maintains reliability by ensuring that the total capacity and power output remain balanced and consistent, achieving both adaptability to irregular spaces and output consistency
Data Source
Figure 1~2
AI summary
Disclosed is a secondary battery including a plurality of electrode assemblies. The secondary battery includes a first electrode assembly including a first cathode, a first separator and a first anode, and a second electrode assembly including a second cathode, a second separator and a second anode, wherein, when an electrode plate area of the second electrode assembly is smaller than that of the first electrode assembly, a cross-sectional thickness of the second electrode assembly is larger than that of the first electrode assembly.