Rotary Electrode Assembly Taping for Uniform Battery Cell Bonding
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Solution Overview
Problem
Existing methods for attaching tape to electrode assemblies in batteries suffer from non-uniform cutting lengths, improper adhesion, and separation of electrodes due to human error, leading to defects in the manufacturing process.
Innovation Solution
An apparatus and method utilizing a rotary roll, guide blocks with holders and vacuum holes, and a tape supply system to automate the attachment of tape to the outer periphery of electrode assemblies, ensuring precise and consistent application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual taping is performed by an operator, then flexibility in operation is maintained, but manufacturing precision and reliability deteriorate due to non-uniform cutting length and attachment position
Solution Approach 1:
The patent replaces the manual mechanical operation of taping with an automated mechanical system consisting of a rotary roll, guide blocks, and tape supply mechanism. This substitution eliminates human variability in cutting length and attachment position while maintaining operational continuity through automated control of the taping process.
Solution Approach 2:
The patent controls the taping process by precisely managing parameters such as tape cutting length, attachment position, and adhesive force application. The automated system maintains consistent parameters across all electrode assemblies, ensuring uniformity that cannot be achieved through manual operation.
2Device complexity
If manual taping is performed by an operator, then device complexity is minimized, but reliability deteriorates due to decrease in adhesive force and tape separation
Solution Approach 1:
The patent replaces manual taping operations with an automated mechanical system that applies tape with consistent adhesive force. The system includes mechanisms for controlling tape application pressure and ensuring proper adhesion, thereby improving reliability while accepting increased device complexity.
Solution Approach 2:
The guide block serves as an intermediary component between the tape supply mechanism and the electrode assembly. It ensures proper tape positioning and application, mediating the transfer of adhesive force uniformly across the tape surface to prevent separation during subsequent processes.
3Manufacturing precision
If automated taping is implemented, then manufacturing precision and reliability are improved, but device complexity increases
Solution Approach 1:
The automated taping system is divided into functional segments: a rotary roll for holding electrode assemblies, guide blocks for tape positioning, and a tape supply mechanism. This segmentation allows each component to perform its specific function efficiently, achieving high manufacturing precision while managing overall system complexity through modular design.
Solution Approach 2:
The rotary roll serves multiple functions: it holds multiple electrode assemblies, positions them for taping, and facilitates their movement through the taping process. This multi-functionality reduces the need for separate devices for each operation, thereby managing device complexity while maintaining high manufacturing precision.
4Productivity
If automated taping is implemented, then productivity increases through high-speed processing, but device complexity increases
Solution Approach 1:
The automated taping system operates continuously with the rotary roll rotating to present electrode assemblies to the taping mechanism in sequence. This continuous operation eliminates idle time between taping operations, achieving high productivity while the automated nature of the system manages the complexity of coordinating multiple moving parts.
Solution Approach 2:
The system incorporates dynamic elements such as the rotating rotary roll and movable guide blocks that adapt to the positioning requirements of each electrode assembly. This dynamic operation allows high-speed processing while the automated control system manages the complexity of coordinating these moving components.
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
The apparatus enables high-speed, defect-free attachment of tape to multiple electrode assemblies, reducing human error and improving manufacturing efficiency.
Implementation Method 1
a surface of the guide block, which is configured to come into contact with a bonding surface of the tape, may have a fine concave-convex layer and a vacuum hole
Data Source
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AI summary
The present invention relates to an electrode assembly manufacturing apparatus and an electrode assembly manufacturing method including a process of attaching a tape to an electrode assembly by using same, the electrode assembly manufacturing apparatus comprising: a rotating roll; a plurality of electrode assembly accommodation grooves provided at the circumference of the rotating roll; and a guide block provided between any one of the plurality of electrode assembly accommodation grooves and another electrode assembly accommodation groove adjacent thereto to provide a tape to each electrode assembly to be accommodated in the electrode assembly accommodation grooves.