Punching Oil Coating Rollers for Uniform Electrode Plate Notching
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Solution Overview
Problem
Existing technologies for manufacturing secondary batteries face challenges in efficiently coating uncoated portions of electrode plates with punching oil, leading to issues such as uneven coating, excessive oil application during stops, and reduced coating efficiency.
Innovation Solution
A punching oil coater system is developed, comprising a coating device that corresponds to feed rollers to coat uncoated portions of electrode plates with punching oil, a sprayer for uniform oil distribution, a supply device for controlling the oil flow, and a controller for managing the coating operation. This system ensures uniform coating by maintaining a constant flow rate and adjusting contact based on the electrode plate's movement and stop states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the feed rollers press the uncoated portions against the coating device to coat with punching oil, then the coating efficiency is improved, but the coating uniformity deteriorates due to variable pressure contact
Solution Approach 1:
The coating device incorporates a feedback control mechanism where the controller receives information about the feed rollers' position and pressure, and adjusts the coating parameters accordingly. This ensures that the punching oil is applied uniformly even when the contact pressure varies during the feeding process, thereby maintaining coating uniformity while preserving high coating efficiency.
2Manufacturing precision
If the coating device continuously applies punching oil to the electrode plate, then the coating coverage is improved, but excessive oil application occurs during stops
Solution Approach 1:
The coating device operates periodically rather than continuously. The controller monitors the movement state of the electrode plate and activates the punching oil application only during periods when the plate is moving through the coating zone. During stop periods, the oil application is automatically suspended, preventing excessive oil application while ensuring complete coverage during active feeding.
3Manufacturing precision
If the coating device is positioned to contact all uncoated portions, then the coating completeness is improved, but the device complexity increases
Solution Approach 1:
The coating device merges the functions of multiple coating heads into a single integrated unit that can contact all uncoated portions simultaneously. This unified structure achieves complete coating coverage without requiring separate coating devices for each section, thereby maintaining coating completeness while avoiding the complexity of multiple independent systems.
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 system achieves increased coating uniformity and efficiency by ensuring consistent application of punching oil on uncoated portions, reducing excessive coating during stops, and enhancing the overall process efficiency in secondary battery manufacturing.
Implementation Method 1
a porous coating member surrounding a surface of the rotation roller and impregnated with the punching oil
Data Source
AI summary
A punching oil coater includes a coating device configured to correspond to feed rollers that contact an electrode plate and move the electrode plate and are at different positions from each other, and rotate to contact and coat a pair of uncoated portions of mutually symmetrical surfaces of the electrode plate with punching oil as the feed rollers press the pair of uncoated portions against the coating device and move the electrode plate; a sprayer configured to spray the punching oil onto the coating device; a punching oil supply device configured to uniformly control a flow amount and flow rate of the punching oil supplied to the sprayer; and a coating controller configured to control a punching oil coating operation for the electrode plate.