Laser Electrode Sheet Notching for Continuous Tab Cutting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for cutting electrode and separator sheets for batteries are costly and time-consuming, posing challenges in the manufacturing process.
Innovation Solution
An apparatus comprising a conveyor and a laser device is used to cut electrode sheets. The conveyor moves an original sheet with an electrode portion and an ear portion, while the laser device cuts out a tab from the ear portion and separates the electrode sheet from the original sheet in a single pass.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional cutting methods are used for electrode sheets, then cutting can be performed, but manufacturing time and costs increase significantly
Solution Approach 1:
The patent replaces conventional mechanical cutting systems with a laser-based cutting system. The laser device emits a focused beam that cuts through the electrode sheet and separator material without physical contact, eliminating the need for mechanical blades or cutting tools. This substitution dramatically reduces cutting time and eliminates mechanical wear, directly addressing the productivity and time loss contradiction.
Solution Approach 2:
The laser cutting system operates continuously as the electrode sheet and separator are fed through the apparatus. The laser beam remains active throughout the cutting process, moving along with the material feed without interruption. This continuous operation eliminates the start-stop cycles inherent in conventional cutting methods, maintaining high productivity while minimizing total cutting time.
2Ease of manufacture
If conventional cutting apparatus are used, then electrode sheets can be cut, but device complexity and manufacturing costs increase
Solution Approach 1:
The laser cutting apparatus is designed to handle multiple functions within a single system: cutting the electrode sheet, cutting the separator, and managing both materials through a unified feed and collection mechanism. This multi-functionality reduces the need for separate cutting stations or specialized equipment for different materials, thereby reducing overall device complexity and manufacturing costs while maintaining ease of manufacture.
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 significantly reduces manufacturing time and costs associated with cutting electrode sheets, enhancing the efficiency of battery production.
Implementation Method 1
The laser device is configured to move a laser to cut out a tab connected to the electrode portion from the ear portion of the original sheet. The laser device is also configured to move the laser from one edge of the electrode portion to another edge of the electrode portion to cut and separate a respective electrode sheet comprising the tab from the original sheet.
Data Source
AI summary
An apparatus for cutting electrode sheets includes a conveyor and a laser device. The conveyor is configured to move an original sheet including an electrode portion and an ear portion extending from an edge of the electrode portion. The laser device is configured to move a laser to cut out a tab connected to the electrode portion from the ear portion of the original sheet. The laser device is also configured to move the laser from one edge of the electrode portion to another edge of the electrode portion to cut and separate a respective electrode sheet including the tab from the original sheet. The laser is configured to cut out the tab from the ear portion and cut and separate the respective electrode sheet including the tab from the original sheet as the conveyor is moving the original sheet.