Electrode Assembly Winding With Separator Tail-End Warning Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the manufacturing process of electrode assemblies for batteries, issues such as broken bands and connectors wound inside the assembly occur, leading to low production quality and efficiency.
Innovation Solution
A manufacturing method and equipment that includes providing a separator roll with an early warning coating, detecting its presence during the winding process, and adjusting the winding accordingly to prevent broken bands and internal connectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the separator body is wound continuously without detection, then the production efficiency is maintained, but the quality deteriorates due to broken bands and internal connectors
Solution Approach 1:
An early warning coating is applied to the separator body at a position spaced from the tail end by a first preset length. This coating serves as a preliminary signal that allows the detection system to identify the approaching tail end and adjust the winding process in advance, preventing broken bands and connector inclusion while maintaining continuous production
Solution Approach 2:
A detection apparatus detects the early warning coating on the separator body during the winding process. When the coating is detected, the system provides feedback to stop the cathode plate and anode plate winding, and to continue pulling the separator roll for a distance equal to or greater than the first preset length before stopping. This feedback mechanism ensures quality control without significantly disrupting production flow
2Manufacturing precision
If the winding process is stopped frequently to check separator position, then the production quality is improved, but the productivity decreases
Solution Approach 1:
The manual or mechanical checking process is replaced with an automated detection apparatus that uses optical or electromagnetic fields to detect the early warning coating. This substitution allows for continuous, non-contact monitoring during the winding process, eliminating the need for frequent manual interruptions while maintaining high production quality
Solution Approach 2:
The separator body itself provides the detection signal through the early warning coating applied on it. The coating serves as a self-identifying marker that enables the detection apparatus to automatically identify the tail end position without requiring external intervention or additional complex sensing systems
Data Source
AI summary
A manufacturing method and a manufacturing equipment of an electrode assembly, a battery cell, a battery, and an electrical device. The manufacturing method of the electrode assembly specifically includes: providing roll materials including: a cathode plate roll, a separator roll, and an anode plate roll, in which, the separator roll includes a separator body and an early warning coating arranged on the separator body; the separator body has a head end and a tail end at two opposite ends along a winding direction thereof; and the early warning coating is configured to be spaced from the tail end by a first preset length; stacking and winding a cathode plate of the cathode plate roll, the separator body of the separator roll, and an anode plate of the anode plate roll; and detecting, in the winding process, whether the early warning coating is arranged on the separator body.