Electrode Assembly Winding Control for Multi-Roll Consistency
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Solution Overview
Problem
Existing battery manufacturing processes face challenges in achieving synchronous winding of multiple electrode assemblies with high efficiency and quality, leading to deviations in winding roll diameter and length, which can result in scrapped electrode assemblies.
Innovation Solution
A winding method and system that synchronously wind multiple electrode assemblies by continuously monitoring real-time parameters such as the number of winding layers, sheet length, and winding roll diameter, and adjusting the sheets to be wound based on preset parameter ranges to ensure consistency and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple electrode assemblies are wound simultaneously using a single winding needle, then production efficiency is improved, but winding quality consistency deteriorates due to parameter deviations
Solution Approach 1:
The control system segments the winding process by independently monitoring and controlling parameters for each electrode assembly being wound simultaneously. The detection mechanism measures parameters (number of winding layers, sheet length, winding roll diameter) for each assembly separately, and the control system adjusts sheets for each assembly independently based on preset parameter ranges, ensuring quality consistency while maintaining high productivity
Solution Approach 2:
The patent implements real-time feedback control by continuously detecting winding parameters during the simultaneous winding process and using this information to dynamically adjust the sheets to be wound. The control system compares detected parameters with preset ranges and automatically adjusts the winding process to correct deviations, maintaining manufacturing precision while achieving high production efficiency through multi-assembly simultaneous winding
2Manufacturing precision
If real-time parameter monitoring and adjustment is implemented, then winding quality is improved, but device complexity increases
Solution Approach 1:
The patent employs a universal control system that handles multiple electrode assemblies simultaneously using a single winding needle. The detection mechanism and control system are designed to manage multiple assemblies with unified parameter monitoring and adjustment protocols, reducing the need for separate control systems for each assembly and thereby limiting the increase in device complexity while maintaining high winding quality
Solution Approach 2:
The control system adjusts winding parameters (such as sheet feed rate, tension, or positioning) dynamically based on real-time detection data. By making parameter changes rather than physical modifications to the winding mechanism, the system achieves high winding quality without proportionally increasing mechanical complexity
Data Source
AI summary
The present application discloses a winding method and a winding system, and relates to the technical field of battery fabrication. The winding method includes: obtaining a first parameter and a second parameter of each electrode assembly on a winding needle in real time, the first parameter being any one of a number of winding layers, a sheet length and a winding roll diameter, and the second parameter being one or both of the remaining two of the number of winding layers, the sheet length and the winding roll diameter; comparing the second parameters respectively with corresponding preset parameter ranges, the preset parameter ranges being the ranges of the second parameters corresponding to the first parameters of preset standard models corresponding to the electrode assemblies; and adjusting, in response to the second parameter exceeding the corresponding preset parameter range, sheets to be wound of the corresponding electrode assembly.