Separator Winding Head Layout for Non-Stop Constant-Speed Jellyroll Winding
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Solution Overview
Problem
Existing lithium cell winding machines require shutdowns and re-feeding during the winding process due to dispersed electrodes and separators, leading to reduced efficiency and increased auxiliary time.
Innovation Solution
A non-stop constant-speed efficient winding machine with integrated mechanisms for electrode and separator feeding, compounding, cutting, and winding, utilizing a three-head winding needle system and thermal compounding to enable seamless switching and continuous winding without shutdowns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the electrodes and separator are wound in a dispersed state using conventional feeding modes, then the winding process can be completed, but the feeding action cannot be continuous and requires re-feeding when the working station is switched, thereby increasing auxiliary time and reducing winding efficiency
Solution Approach 1:
The separator is pre-compounded with electrodes before the winding process using a thermal compounding mechanism. This preliminary bonding action ensures that the composite structure remains intact during feeding and winding operations, eliminating the need for re-feeding when switching working stations and enabling continuous feeding without shutdowns
Solution Approach 2:
The patent combines multiple functions (feeding, compounding, cutting, and winding) into an integrated system where the separator compounding mechanism is positioned between the electrode feeding mechanism and the winding mechanism. This merging of operations allows seamless transitions between working stations without requiring shutdowns or re-feeding actions
2Manufacturing precision
If shutdowns are implemented to re-feed dispersed electrodes and separator during working station switching, then proper positioning can be achieved, but production efficiency is reduced due to interruptions in the winding process
Solution Approach 1:
The thermal compounding mechanism performs preliminary bonding of the separator to electrodes before winding begins. This pre-positioning and pre-bonding action ensures accurate separator positioning throughout the winding process without requiring shutdowns or re-feeding operations, thereby maintaining both positioning accuracy and production efficiency
Solution Approach 2:
The integrated system design enables continuous feeding and winding operations without shutdowns. The separator compounding mechanism ensures the separator remains properly positioned and bonded throughout the continuous process, eliminating interruptions while maintaining manufacturing precision
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Achieves constant-speed feeding and winding of separators without interruptions, optimizing production efficiency and maintaining stable tension, thereby improving the quality and efficiency of jellyroll production.
Implementation Method 1
the separator compounding mechanism is configured to thermally compound the separator and tightly clamp the separator
Data Source
AI summary
A non-stop constant-speed efficient winding machine for separator relates to the technical field of lithium ion cell manufacturing. The non-stop constant-speed efficient winding machine for separator includes a base plate, an electrode feeding mechanism, a winding mechanism, a separator cutting mechanism, and a separator compounding mechanism. The winding mechanism includes a winding head and three winding needles rotatably provided on the winding head. By additionally providing the separator compounding mechanism between the electrode feeding mechanism and the winding mechanism, thermal compounding of the separator is realized, and through rolling separator cutting of the separator cutting mechanism, the separator cutting is realized. The winding needle located at the winding position can adsorb a separator end after the cutting, and wind the separator end on an outer circumferential surface of the corresponding winding needle.