Stepped Battery Cell Electrode Assembly for Irregular Spaces
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Solution Overview
Problem
Conventional battery cells with rectangular or cylindrical shapes struggle to efficiently fit into devices with curved or irregular shapes, leading to dead spaces and reduced capacity utilization.
Innovation Solution
A battery cell design featuring an electrode assembly with two or more electrode rolls stacked in a height direction, having different sizes to form stepped structures in width and/or height, allowing for efficient mounting in various device spaces and maximizing internal space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional rectangular or cylindrical battery cells are used, then manufacturing and structure are simple, but they cannot efficiently fit into devices with curved or irregular shapes, leading to dead spaces and reduced capacity utilization
Solution Approach 1:
The battery cell is divided into multiple electrode rolls of different sizes that are stacked together. Each electrode roll can be independently sized, allowing the overall battery cell to be segmented into a stepped configuration that adapts to irregular device spaces while maintaining manageable manufacturing complexity for each individual roll component.
Solution Approach 2:
The invention transitions from conventional two-dimensional battery layouts to a three-dimensional stepped structure by stacking electrode rolls of varying sizes in vertical layers. This dimensional change enables the battery to conform to curved and irregular device shapes by utilizing height variations, thereby improving space utilization without requiring complex lateral reconfiguration.
2Volume of stationary object
If electrode rolls of different sizes are stacked to form stepped structures, then space utilization in devices is maximized, but manufacturing precision and assembly complexity increase
Solution Approach 1:
The electrode assembly is segmented into multiple discrete rolls that can be manufactured to standard specifications and then stacked in predetermined configurations. This segmentation allows each roll to be produced with conventional precision, while the overall stepped structure achieves high space utilization through controlled variation in roll dimensions and stacking arrangements.
Solution Approach 2:
Different regions of the battery cell utilize electrode rolls with locally optimized dimensions. The stepped structure employs varying roll sizes in different positions to match the specific geometric requirements of the device housing, allowing precise adaptation to local space constraints while maintaining manufacturing feasibility through standardized production methods for each roll type.
3Quantity of substance
If stepped structures with multiple electrode rolls are implemented, then capacity is increased through better space utilization, but device complexity and assembly difficulty increase
Solution Approach 1:
The battery capacity is increased by segmenting the electrode assembly into multiple rolls that can be stacked vertically. Each roll contributes to the overall capacity, and the segmented structure allows for optimized space utilization in irregular device spaces. The segmentation enables parallel manufacturing of individual rolls, which simplifies quality control while achieving higher total capacity through cumulative stacking.
Solution Approach 2:
The invention utilizes the vertical dimension by stacking electrode rolls of different sizes to create a stepped configuration. This dimensional approach allows the battery to achieve higher capacity by effectively utilizing three-dimensional space within the device, rather than being constrained to a single planar layer. The vertical stacking maximizes the quantity of active material that can be accommodated within the available device volume.
Data Source
AI summary
Disclosed herein is a battery cell including an electrode assembly configured to have a structure in which two or more electrode rolls are stacked in a height direction on the basis of a plane, wherein the electrode rolls have the same size or at least two of the electrode rolls have different sizes, and the electrode rolls having different sizes are stacked to form one or more stepped structures in width and/or height.