Dual Electrode Cutting Layout for High-Speed Burr Control
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Solution Overview
Problem
Conventional electrode-cutting apparatuses for secondary batteries suffer from inefficiencies in cutting quality, particularly in terms of burr and debris generation, and lack high-speed inspection capabilities.
Innovation Solution
An ultra-high-speed dual cutting system comprising an electrode supply unit, primary cutting unit, and secondary cutting unit, along with a high-speed inspection vision system, which includes a notching die and multiple feeders and cutters operating in opposite directions to achieve optimized cutting and inspection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional single cutting unit is used, then device complexity is low, but productivity is insufficient
Solution Approach 1:
The cutting system is divided into two independent cutting units (first cutting unit with first cutter, second cutting unit with second cutter) that operate simultaneously on different electrodes. Each cutting unit functions as an independent module, allowing parallel processing of multiple electrodes to achieve ultra-high-speed cutting while maintaining manageable device complexity through modular design.
2Manufacturing precision
If conventional cutting method is used, then device complexity is low, but manufacturing precision deteriorates due to burr and debris generation
Solution Approach 1:
The cutting process is segmented into two sequential operations: first cutting unit performs initial cutting, second cutting unit performs finishing cut to remove burrs and debris. This segmentation of the cutting function into roughing and finishing stages improves manufacturing precision while keeping each cutting unit relatively simple in structure.
Solution Approach 2:
The first cutting unit acts as an intermediary that performs the initial cutting operation, creating a preliminary cut that the second cutting unit then refines. This intermediary cutting step reduces the burden on the second cutter and improves overall cutting quality by separating the roughing and finishing functions.
3Loss of time
If conventional single cutting unit is used, then device complexity is low, but loss of time increases due to sequential processing
Solution Approach 1:
The first and second cutting units operate continuously and simultaneously on different electrodes throughout the production process. While the first cutter processes one electrode, the second cutter processes another electrode at the same time, eliminating idle time and maintaining continuous useful action to reduce overall production cycle time.
Solution Approach 2:
The first cutting unit performs preliminary cutting on electrodes in advance, preparing them for subsequent processing. This preliminary action allows the second cutting unit to focus on precision finishing, and enables overlapping of operations to reduce total production time.
Data Source
AI summary
An object of the present disclosure is to provide a system for cutting an electrode 10 (negative/positive) delivered in reel form at a constant pitch during a notching process of a secondary battery manufacturing process, and a configuration of the present disclosure includes an electrode supply unit 120 that supplies an electrode 10 of a secondary battery, an electrode feeder 130 that feeds the electrode 10 supplied from the electrode supply unit 120 for cutting, a primary cutting unit 140 that primarily cuts the electrode 10 supplied by the electrode feeder 130, and a secondary cutting unit 150 that secondarily cuts the electrode 10 supplied from the primary cutting unit 140.An effect of the present disclosure is that equipment that cuts the electrode 10 supplied in reel form at an ultra-high speed with a constant pitch suited to product specifications, performs external inspection, and loads acceptable and defective products into magazines enables production at more than twice the throughput of conventionally used equipment.