Sulfide Solid-State Battery Zig-Zag Stacking for Reliable Assembly
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Solution Overview
Problem
Current all-solid-state battery (ASSB) cell fabrication methods are inefficient and costly due to the need for high accuracy in electrode positioning, leading to reduced reliability and limited mechanical bendability of electrodes.
Innovation Solution
A continuous fabrication process using high-speed zig-zag stacking of continuous bendable anode or cathode electrodes with sulfide-based electrolyte layers, enabling scalable and reliable ASSB production through slurry coating and calendaring, which improves electrode positioning and mechanical flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high accuracy electrode positioning is required, then reliability is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The battery cell is divided into multiple individual cathode electrodes arranged between alternating portions of a continuous anode electrode in a zig-zag pattern. This segmentation allows each cathode electrode to be positioned and assembled independently, reducing the overall positioning complexity while maintaining reliability through the modular structure.
Solution Approach 2:
The electrodes are arranged in a zig-zag pattern rather than a linear or grid configuration. This dimensional reorganization allows for more flexible positioning and assembly, reducing the stringency of positioning requirements while maintaining electrical connectivity and performance.
2Reliability
If high accuracy electrode positioning is required, then reliability is improved, but production efficiency decreases
Solution Approach 1:
The battery cell is divided into multiple individual cathode electrodes arranged between alternating portions of a continuous anode electrode in a zig-zag pattern. This segmentation allows each cathode electrode to be positioned and assembled independently, reducing the overall positioning complexity while maintaining reliability through the modular structure.
Solution Approach 2:
The electrodes are arranged in a zig-zag pattern rather than a linear or grid configuration. This dimensional reorganization allows for more flexible positioning and assembly, reducing the stringency of positioning requirements while maintaining electrical connectivity and performance.
3Manufacturing precision
If rigid electrode structures are used, then manufacturing precision is improved, but mechanical bendability decreases
Solution Approach 1:
The battery cell is divided into multiple individual cathode electrodes arranged between alternating portions of a continuous anode electrode in a zig-zag pattern. This segmentation allows each cathode electrode to be positioned and assembled independently, reducing the overall positioning complexity while maintaining reliability through the modular structure.
Solution Approach 2:
The electrodes are arranged in a zig-zag pattern rather than a linear or grid configuration. This dimensional reorganization allows for more flexible positioning and assembly, reducing the stringency of positioning requirements while maintaining electrical connectivity and performance.
Data Source
AI summary
A battery cell includes a continuous anode electrode comprising an anode current collector. A plurality of individual cathode electrodes include a cathode current collector, cathode active material arranged on opposite sides of the cathode current collector, and a first sulfide electrolyte layer arranged on the cathode active material. The continuous anode electrode is arranged in a zig-zag pattern and the plurality of individual cathode electrodes are arranged between adjacent alternating portions of the continuous anode electrode.