Winding Core Suction Separator Attachment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current battery manufacturing methods for wound electrode assemblies face challenges in productivity and stability, leading to inconsistent product quality and reduced yield.
Innovation Solution
A method involving suction-attachment and pressing of separators using a jig with protrusions onto a winding core, followed by winding the electrodes, ensures stable attachment and efficient production of wound electrode assemblies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tip parts of separators are stuck to winding core while being pressed against the winding core, then the separators can be held in place during winding, but the product quality becomes inconsistent and production yield decreases
Solution Approach 1:
The patent replaces the conventional mechanical pressing method with a suction-based attachment system. The winding core is equipped with suction holes that create negative pressure to hold the separator tip parts, providing more stable and consistent attachment compared to mechanical pressing. This substitution resolves the contradiction by achieving both reliable separator holding and consistent product quality through controlled suction force distribution.
Solution Approach 2:
The patent applies pneumatic principles by using suction (negative pressure) through holes in the winding core to attach the separator tip parts. This pneumatic attachment method provides uniform and controllable holding force across the separator surface, improving both the reliability of separator attachment and the consistency of product quality compared to traditional mechanical pressing.
2Productivity
If conventional winding method is used without suction-attachment and pressing, then the manufacturing process is simpler, but productivity and production yield are reduced
Solution Approach 1:
The patent merges the separator attachment function with the winding core itself by incorporating suction holes directly into the core structure. This integration allows the winding core to simultaneously perform its primary winding function and the secondary function of securing separator tip parts through suction, thereby improving productivity without proportionally increasing device complexity.
Solution Approach 2:
The winding core is designed with multi-functionality: it serves both as the structural element for winding the electrode assembly and as the attachment mechanism for securing separator tip parts through suction holes. This universal design improves production yield by ensuring proper separator positioning while maintaining a relatively simple overall device structure.
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
This approach enhances the stability of the wound electrode assembly and improves production yield and productivity by maintaining consistent product quality.
Implementation Method 1
causing, with the first separator and the second separator being stacked on each other, the first separator and the second separator to be suction-attached to a winding core
Data Source
AI summary
A method of manufacturing method a battery includes the following steps. Step (A): causing, with the first separator and the second separator being stacked on each other, the first separator and the second separator to be suction-attached to a winding core and to be pressed against the winding core with a jig including a plurality of protrusions formed on a surface of the jig. Step (B): winding the first separator and the second separator onto the winding core.