Laser Cutting Clamp Assembly for Clean Electrode Sheet Edges
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for cutting sensitive electrode sheets in batteries fail to provide a gentle and reliable process that prevents contamination and deformation, which can lead to short circuits or fires.
Innovation Solution
A clamping assembly with a first and second clamping plate device, using an outer clamping unit and inner cover element to define a passage gap for a laser beam, along with suction and blow-off nozzles to manage ablation particles, and a supply device for precise cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If laser beam cutting is used on electrode sheets, then cutting precision is improved, but contamination and deformation occur
Solution Approach 1:
A clamping assembly with clamping plates is introduced as an intermediary between the laser beam and the electrode sheet. The clamping plates confine the laser beam to a controlled passage gap, preventing direct exposure of the electrode sheet to the laser processing environment while maintaining cutting precision through the defined gap geometry.
Solution Approach 2:
The passage gap created by the clamping plates establishes a controlled environment that isolates the electrode sheet from harmful laser byproducts. This confined space acts as a protective barrier, preventing contamination from vaporized material and reducing thermal deformation by limiting exposure to high-energy laser radiation.
2Object-affected harmful factors
If elaborate cleaning and testing steps are added, then contamination is reduced, but processing complexity increases
Solution Approach 1:
The clamping assembly performs contamination prevention as a preliminary action during the cutting process itself. By confining the laser beam within the passage gap before cutting occurs, the system prevents contamination at the source rather than requiring subsequent cleaning operations, thereby reducing overall processing complexity.
Solution Approach 2:
The laser beam's harmful effect of generating vaporized material and heat is converted into a benefit by using the clamping plates to confine these effects within the passage gap. The harmful laser byproducts are redirected and contained, preventing contamination of the electrode sheet while maintaining the effectiveness of the cutting process.
3Productivity
If the laser beam is exposed directly to the workpiece, then cutting speed is improved, but vaporized material deposits on the workpiece surface
Solution Approach 1:
The clamping assembly segments the laser processing space into a confined passage gap and an external environment. This segmentation allows the laser beam to operate at full power for high-speed cutting while physically separating the vaporized material deposition zone from the electrode sheet surface, preventing contamination.
Solution Approach 2:
The passage gap introduces a spatial dimension constraint that controls the path of vaporized material. By limiting the laser beam to a narrow gap between clamping plates, the system directs heat and vapor away from the electrode sheet surface in the vertical dimension, enabling high-speed cutting without surface deposition.
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
Ensures clean, precise cutting with reduced deformation and contamination, facilitating easy handling and maintenance, suitable for thin and delicate sheets.
Implementation Method 1
a laser beam device which is configured to generate a laser beam and to guide it along the passage gap formed
Implementation Method 2
cutting a film-like workpiece, in particular an electrode sheet, by means of a laser beam
Implementation Method 3
a suction device, in particular a vacuum plate... Via corresponding channels and openings, a negative pressure can thus be generated with which the film-like workpiece is held on the resting inner cover element
Data Source
AI summary
The invention relates to an apparatus and a method for cutting a film-like workpiece, in particular an electrode sheet, by means of a laser beam with a clamping assembly for a sheet-shaped starting material. According to the invention it is provided that the clamping assembly comprises a first clamping plate device and a second clamping plate device, between which the sheet-shaped starting material can be clamped, wherein at least one clamping plate device comprises an outer clamping unit, which is adapted to an outer contour of the workpiece, and an inner cover element, which, during cutting, is arranged inside the outer clamping unit and covers an inner surface of the workpiece, wherein a passage gap for the laser beam is formed between the outer clamping unit and the inner cover element, and that a laser beam device is provided and configured to generate a laser beam and to guide it along the formed passage gap.