Electrode Plate Tab Pattern Spacing With Dual Laser Feedback
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Solution Overview
Problem
Existing methods for forming electrode plate tab patterns in secondary batteries are inefficient and lack precision in spacing tab patterns at regular intervals, leading to suboptimal process efficiency.
Innovation Solution
An apparatus and method that includes a conveying portion, a first pattern forming portion, and a second pattern forming portion, with a mechanism to adjust the position of the second tab pattern to maintain a preset distance from the first tab pattern, using laser portions and a feedback loop to correct positional errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single array of laser devices is used along a conveying apparatus to form tab patterns, then the device complexity is reduced, but the manufacturing precision of tab pattern spacing deteriorates
Solution Approach 1:
The patent divides the tab pattern formation into multiple independent laser devices (first laser device and second laser device) positioned at different locations. Each laser device forms a portion of the tab pattern, and their positions are independently controlled to achieve precise spacing. This segmentation allows each laser to be precisely positioned and controlled, resolving the contradiction between simple device arrangement and precise spacing requirements.
2Device complexity
If tab patterns are formed sequentially using a single laser array, then the device complexity is reduced, but the productivity deteriorates due to slower formation process
Solution Approach 1:
The patent combines multiple laser devices (first laser device and second laser device) to operate simultaneously on the electrode plate. The first laser device forms a first tab pattern while the second laser device forms a second tab pattern in parallel. This merging of multiple formation operations into a single integrated system increases productivity without significantly increasing overall system complexity, as the lasers work concurrently rather than sequentially.
3Ease of operation
If the position of tab patterns is not adjusted, then the ease of operation is improved, but the manufacturing precision of spacing deteriorates due to conveyor speed variations
Solution Approach 1:
The patent incorporates a feedback control system that includes a position sensor to detect the actual position of the electrode plate, a distance error calculation portion to compute the deviation from the target spacing, and an electrode plate movement controller to adjust the position accordingly. This feedback loop continuously monitors and corrects spacing errors caused by conveyor speed variations, maintaining precise tab pattern spacing while keeping the operation straightforward through automated correction.
Solution Approach 2:
The patent implements a dynamic position adjustment mechanism that can modify the spacing between tab patterns in real-time based on detected errors. The electrode plate movement controller dynamically adjusts the position of the electrode plate or laser devices during the formation process, allowing the system to adapt to variations in conveyor speed and maintain precise spacing without requiring manual intervention or complex mechanical adjustments.
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
Enhances the efficiency of tab pattern formation by ensuring consistent spacing and improving the overall process by allowing simultaneous formation of tab patterns at regular intervals.
Implementation Method 1
a first pattern forming portion configured to form a first tab pattern on the electrode plate; and a second pattern forming portion configured to form a second tab pattern on the electrode plate
Data Source
AI summary
An apparatus for forming an electrode plate tab pattern includes a conveying portion configured to convey, in a first direction, an electrode plate coated with an active material, a first pattern forming portion configured to form a first tab pattern on the electrode plate, and a second pattern forming portion configured to form a second tab pattern on the electrode plate. The first tab pattern and the second tab pattern are configured to be spaced apart from each other by a preset first distance.