Continuous Electrode Cutting With Synchronized Laser Transport
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Solution Overview
Problem
Existing methods for cutting continuous battery electrode materials are inefficient and costly, often requiring belt standstill during mechanical or laser separation, which leads to mechanical and thermal stress, poor cut edges, and increased waste.
Innovation Solution
A method involving a transport device with at least two transport units, where one dimension of the transport units is smaller than the battery electrode material, allowing for on-the-fly cutting using a laser cutting device, reducing stress and improving edge quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mechanical separation or laser separation with belt standstill is used, then cutting can be performed, but cycle time increases and productivity decreases
Solution Approach 1:
The patent implements continuous cutting without belt standstill by using a laser cutting device that moves synchronously with the conveyor belt. The laser beam continuously processes the electrode material while it moves through the machining region, eliminating idle time and maintaining continuous productive action throughout the cutting process.
Solution Approach 2:
The patent employs dynamic synchronization between the conveyor belt movement and the laser cutting device. The laser cutting device is designed to move at the same speed as the conveyor belt, creating a dynamically balanced system that enables cutting in motion without requiring the belt to stop, thereby maintaining productivity.
2Manufacturing precision
If laser separation with belt standstill is used, then cut edges can be produced, but thermal stress increases and edge quality deteriorates
Solution Approach 1:
The continuous movement of the electrode material through the laser cutting process prevents heat accumulation and thermal stress concentration. The laser beam continuously processes the material in motion, distributing thermal energy along the cut path rather than concentrating it at a single point, which maintains edge quality while reducing thermal damage.
Solution Approach 2:
The patent rushes the laser cutting process through the material quickly by maintaining high conveyor belt speed synchronized with laser movement. This rapid processing minimizes the time thermal energy can accumulate and cause stress, allowing high-quality cuts to be made without excessive thermal damage to the electrode material.
3Manufacturing precision
If conventional laser cutting with large spot diameter is used, then machining can be performed, but energy consumption increases and edge quality decreases
Solution Approach 1:
The patent optimizes the laser beam parameters by using a focused beam with small spot diameter (e.g., 0.1-0.5mm) that moves synchronously with the conveyor belt. This parameter change concentrates the laser energy into a narrow path, reducing the total energy required while improving cut precision and edge quality compared to conventional large-spot laser cutting.
Solution Approach 2:
The dynamic synchronization between the laser cutting device and conveyor belt enables the use of a small, focused laser spot that moves rapidly through the material. This dynamic approach allows concentrated energy delivery along the cut path, minimizing energy waste and maximizing cut quality without requiring excessive laser power.
4Ease of manufacture
If mechanical separation with contact-based cutting is used, then cutting can be performed, but mechanical stress increases and material damage occurs
Solution Approach 1:
The patent replaces the mechanical contact-based cutting system with a non-contact laser cutting system. The laser beam cuts the electrode material without physical contact, eliminating mechanical stress and force application that would otherwise damage the delicate electrode structure, while maintaining manufacturing simplicity through automated laser processing.
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 method increases cycle time, reduces mechanical and thermal stress, improves cut edge quality, and minimizes waste, resulting in a more efficient and cost-effective production process for battery electrodes.
Implementation Method 1
a laser cutting device comprising at least one laser cutting element
Implementation Method 2
machining the continuous battery electrode material by means of the at least one cutting device during a movement in the movement direction
Data Source
AI summary
A method for cutting a continuous battery electrode material in order to produce battery electrodes includes providing a continuous battery electrode material and providing a transport device which is designed to move the continuous battery electrode material in a movement direction from a starting point to an end point over a machining region, wherein the transport device comprises at least two transport units. Additionally, at least one cutting device is provided. The continuous battery electrode material is then machined while being moved in the movement direction by means of the at least one cutting device such that at least one machining step is carried out on the continuous battery electrode material. At least one dimension of at least one of the at least two transport units is smaller than at least one dimension of the continuous battery electrode material at least in one region.