Electrode Laser Ablation Notching Boundary
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Solution Overview
Problem
The existing methods for manufacturing electrodes are inefficient due to slow notching speeds, which increase manufacturing time and pose safety risks by potentially exposing the electrode collector during the process.
Innovation Solution
A method involving the application of an electrode active material to an electrode collector, followed by ablation to create a boundary line between the coated and non-coated areas, allowing for precise notching by setting a notching line within the ablation area, thereby reducing the thickness of the active material coating and enhancing notching speed while preventing collector exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If laser notching is performed on the active material coating portion to ensure safety, then the electrode collector is protected from exposure, but the notching time increases significantly due to the thick thickness
Solution Approach 1:
The patent divides the notching process into two distinct stages: first performing ablation on the active material coating portion to create a recessed area, then performing notching on the non-coating portion. This segmentation allows each step to be optimized independently, reducing overall processing time while maintaining safety.
Solution Approach 2:
The ablation step is performed as a preliminary action before the main notching process. By pre-processing the active material coating portion to reduce its thickness and create a recessed area, the subsequent notching operation becomes faster and easier, significantly reducing total manufacturing time.
2Productivity
If laser notching is performed on the non-coating portion only, then the notching speed is fast, but the electrode collector may be exposed causing safety issues
Solution Approach 1:
Ablation is performed as a preliminary step on the active material coating portion before notching. This creates a recessed area that serves as a safety buffer, ensuring that subsequent notching operations on the non-coating portion cannot expose the electrode collector, thus maintaining safety while allowing high-speed notching.
Solution Approach 2:
The ablated area acts as an intermediary structure between the active material coating portion and the non-coating portion. This recessed area serves as a protective barrier that prevents direct access to the electrode collector during notching, enabling faster notching speeds without compromising safety.
3Manufacturing precision
If the ablation line is set close to the boundary, then the notching precision is improved, but the risk of collector exposure increases
Solution Approach 1:
Ablation is performed as a preliminary step to create a recessed area with a specific depth. This pre-created recessed structure provides a safety buffer zone that allows the notching line to be positioned closer to the boundary for higher precision while the ablated material remains as a protective barrier preventing collector exposure.
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 significantly increases notching speed, reduces manufacturing time, and ensures safety by maintaining the electrode active material coating during the process, preventing collector exposure and potential short circuits.
Implementation Method 1
a step of performing ablation on a boundary line between the non-coating portion and the active material coating portion
Data Source
AI summary
Discussed is a method of manufacturing an electrode, the method including applying an electrode active material to a portion of an electrode collector, the electrode collector having a non-coating portion that is not coated with the electrode active material, and an active material coating portion that is coated with the electrode active material; setting an ablation line on at least one end of the active material coating portion that is contacting the non-coating portion; performing ablation on a boundary line between the non-coating portion and the active material coating portion and an area surrounded by the ablation line while maintaining a state in which the electrode active material is applied; setting a notching line on an ablation area of the electrode collector on which the ablation is performed; and performing notching by using the notching line as a boundary.