Battery Separator Transfer Line for High-Speed Plate Production
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Solution Overview
Problem
Existing methods for applying battery pastes and separators to bipolar battery plates have low mass production rates and require significant capital investment in specialized equipment.
Innovation Solution
A production line and method for making and applying separators to battery plate substrates, involving a longitudinally elongate web of separator material, pasting, severing, and transferring individual separators onto substrates, utilizing synchronized variable speed motors and vacuum ports to achieve high-speed production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional methods are used to apply battery paste and separators to bipolar plates, then the process can be performed with existing equipment, but the mass production rate is low and capital investment is high
Solution Approach 1:
The continuous web of separator material is segmented into individual separators through a cutting mechanism, allowing high-speed production while using standard equipment. The segmentation enables batch processing of separators at rates of 100-200 feet per minute without requiring completely specialized production lines.
Solution Approach 2:
A transfer mechanism serves as an intermediary between the separator web and the bipolar plates, facilitating the application of separators at high speeds. This intermediary system includes vacuum ports and transfer belts that enable efficient material handling without complex specialized equipment.
2Manufacturing precision
If separators are applied individually to each substrate, then precision placement is achieved, but the production speed decreases
Solution Approach 1:
The system maintains continuous motion of the separator web through the entire process - from feeding, pasting, cutting, to transfer. The synchronized variable speed motors ensure continuous operation at high speeds while maintaining precise placement through coordinated motion control rather than stop-and-start individual application.
Solution Approach 2:
Manual or slow mechanical application of separators is replaced with a synchronized motor-driven system that uses vacuum ports and continuous belt motion. This substitution enables high-speed operation while maintaining precision through mechanical coordination rather than manual positioning.
3Productivity
If high-speed production is implemented, then productivity increases to 100-200 feet per minute, but equipment complexity and capital investment increase
Solution Approach 1:
The production line uses standardized, multi-functional equipment that can perform multiple operations (feeding, pasting, cutting, transferring) in sequence. This universality allows high-speed production without requiring completely specialized equipment for each function, thereby reducing capital investment while achieving 100-200 feet per minute production rates.
Solution Approach 2:
Variable speed motors provide dynamic control of the separator web motion, allowing the system to accelerate and synchronize at high speeds. This dynamic control enables high-productivity operation using standard equipment rather than requiring complex fixed-speed specialized machinery.
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
Enables high-speed mass production of battery plates with applied separators, achieving rates of at least 100-200 lineal feet per minute, improving efficiency and reducing capital investment requirements.
Implementation Method 1
The cylinder has vacuum ports retaining the individual separators on the cylinder and the vacuum is relieved to dispose the separators on the substrates.
Data Source
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AI summary
A battery electrode plate assembly and a production line and method of making, pasting, and applying separators to substrates of battery electrode plate assemblies. The production line includes, in an embodiment, a paster, a cutter, and a transfer mechanism. The paster is configured to apply a battery paste to a first side of an elongate web of a separator material. The cutter is downstream of the paster and is configured to sever the pasted web into a series of separate and individual separators with paste on their first side. And the transfer mechanism is configured to dispose an individual separator of the series on one of a series of substrates with the pasted first side of the separator facing the substrate on which it is disposed.