Alternating Laser Groups for Pole Sheet Slotting Under Thermal Drift
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Solution Overview
Problem
The efficiency of battery cell processing is hindered by temperature-related issues in laser devices, such as temperature drift, larger spot size, and reduced energy output in galvanometers and field lenses, leading to substandard slotting quality and low production efficiency.
Innovation Solution
A method involving a production line with alternating laser device groups, where the temperature of galvanometers and field lenses is monitored, and devices are turned off and on to prevent overheating, ensuring continuous processing and maintaining high quality slotting by switching between groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the laser device runs for a long time to slot the pole sheet, then production efficiency is improved, but temperature of the galvanometer and field lens increases causing quality degradation
Solution Approach 1:
The patent divides the laser devices into multiple groups (first laser group and second laser group) and operates them in an alternating manner. When one group is working, the other group is cooling down, and vice versa. This segmentation allows continuous production while preventing temperature accumulation in any single group, thus maintaining slotting quality without sacrificing production efficiency.
2Manufacturing precision
If the laser device is turned off for a period of time to reduce temperature, then slotting quality is maintained, but production efficiency decreases
Solution Approach 1:
The patent implements continuous slotting operation by having multiple laser groups work in alternation. While one laser group is cooling down (turned off), the other group continues to slot the pole sheet. This ensures that the slotting process never stops, maintaining continuous production flow and high efficiency, while each group gets adequate cooling time to preserve quality.
3Productivity
If multiple laser devices are used to maintain continuous processing, then production efficiency is improved, but temperature management complexity increases
Solution Approach 1:
The patent employs periodic switching between laser groups, where each group operates for a predetermined time period and then switches to the other group. This periodic action simplifies temperature management by creating a regular, predictable cycle of operation and cooling, making the control system easier to manage compared to continuous monitoring and adjustment of multiple devices.
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 ensures uninterrupted processing and improves production efficiency by protecting the laser devices from overheating, maintaining high slotting quality, and enhancing overall production line efficiency.
Implementation Method 1
the laser device being configured to process a pole sheet
Implementation Method 2
the laser passes through the galvanometer and field lens
Data Source
AI summary
A method for using a laser device includes: dividing laser devices into a first laser group and a second laser group, and turning on the laser device in the first laser group and processing the pole sheet; when any temperature value of a galvanometer and a field lens of the laser device in the first laser group reaches a set value, turning off the laser device in the first laser group, and turning on the laser device in the second laser group to continue processing the pole sheet; when any temperature value of the galvanometer and field lens of the laser device in the second laser group reaches the set value, turning off the laser device in the second laser group, and turning on the laser device in the first laser group to continue processing the pole sheet.