Battery Electrode Winding Core Transfer for Faster Separator Cutting
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Solution Overview
Problem
Existing methods for manufacturing batteries with wound electrode assemblies are inefficient, leading to low productivity.
Innovation Solution
A method involving steps to wind, cut, and stack separators and electrode plates on a winding core, including cutting the separators on the outer circumferential surface of another core, using suction and presser jigs, and moving cores between positions to facilitate efficient assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If separators and electrode plates are wound onto a winding core using conventional methods, then the battery structure is formed, but productivity is low due to sequential processing steps
Solution Approach 1:
The separators are wound onto the winding core in advance before the electrode plates are installed. This preliminary winding action allows the separators to be positioned and secured on the core beforehand, creating a prepared structure that accelerates subsequent assembly steps and improves overall manufacturing productivity.
Solution Approach 2:
The manufacturing process is divided into distinct sequential steps: first winding separators onto the core, then moving the core to install electrode plates, and finally cutting the separators. This segmentation allows each operation to be optimized independently and enables parallel processing potential in automated systems.
2Ease of manufacture
If the winding core is moved to a different position after winding, then cutting and assembly can be optimized, but the complexity of the manufacturing apparatus increases
Solution Approach 1:
The winding core is designed to be movable between different positions within the manufacturing apparatus. This dynamic positioning capability allows the core to be transported to optimal locations for cutting operations and electrode plate installation, facilitating easier assembly while the movement mechanism manages the added complexity.
Solution Approach 2:
A transport mechanism serves as an intermediary between the winding station and the cutting/assembly stations. This intermediary system enables smooth transitions of the winding core between different functional areas, simplifying the overall manufacturing process despite the added mechanical complexity.
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
Improves the productivity of battery manufacturing by optimizing the winding process, enhancing efficiency and throughput.
Implementation Method 1
with the first separator and the second separator being stacked and retained on an outer circumferential surface of the other winding core
Data Source
AI summary
(A): Winding a first separator, a second separator, a positive electrode plate, and a negative electrode plate onto a winding core disposed at a first position. (B): Moving the winding core away from the first position and disposing another winding core at the first position. (C): Cutting the first separator and the second separator wound on the winding core that is moved away from the first position in (B) at a location on or near the other winding core disposed at the first position in (B), with the first separator and the second separator being stacked and retained on an outer circumferential surface of the other winding core. (D): Winding the first separator and the second separator onto the winding core that is moved away from the first position in (B) up to a cut edge portion at which the first separator and the second separator are cut in (C).