Vertical Film Wrapping Rollers for Wrinkle-Free Battery Cell Lamination
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Solution Overview
Problem
Current film wrapping technologies in battery manufacturing often result in wrinkles and low accuracy due to horizontal adhering methods, which lead to unreliable clamping and bubble formation during the adhesive application process.
Innovation Solution
A film wrapping equipment with a vertical film wrapping method using two film wrapping rollers that continuously roll the material strip onto the product, combined with a strip cutting assembly for precise cutting and a film pulling assembly for controlled material strip management, ensuring a flat surface and high accuracy without bubbles or wrinkles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If horizontal adhering method is used, then the battery cell can be wrapped with film material, but wrinkles form easily and film wrapping accuracy is low
Solution Approach 1:
The patent inverts the traditional horizontal adhering method by implementing a vertical film wrapping method. The battery cell is clamped vertically and the film is wrapped around it in a vertical direction, which fundamentally changes the wrapping approach to eliminate wrinkles and improve accuracy.
Solution Approach 2:
The film wrapping rollers are designed to be adjustable in position and pressure, allowing dynamic adaptation to different battery cell sizes and film thicknesses. This dynamic adjustment capability ensures consistent high-quality wrapping without wrinkles across various product specifications.
2Reliability
If horizontal adhering method is used, then the battery cell can be wrapped with adhesives, but clamping reliability is poor with looseness
Solution Approach 1:
The patent changes the clamping orientation from horizontal to vertical. The clamping mechanism grips the battery cell vertically, providing more stable and reliable clamping throughout the wrapping process, eliminating the looseness issues associated with horizontal clamping.
3Manufacturing precision
If horizontal adhering method is used, then the battery cell can be wrapped with film material, but bubbles form on the film surface
Solution Approach 1:
By inverting the wrapping method from horizontal to vertical, the patent changes the flow dynamics of film application. The vertical wrapping process allows for better air evacuation and more uniform film adhesion, preventing bubble formation on the film surface.
Solution Approach 2:
The patent adjusts key parameters including wrapping direction (vertical), roller pressure, and film feeding speed to optimize the wrapping process. These parameter changes work together to eliminate bubbles and achieve a smooth, high-quality film surface.
Data Source
AI summary
The present application relates to a film wrapping equipment. The film wrapping equipment includes: a film wrapping assembly including two film wrapping rollers arranged opposite to each other in a first direction, and a film wrapping channel for a product to pass through formed between the two film wrapping rollers; a film pulling assembly arranged on one side of the film wrapping assembly in the first direction; a product loading assembly used to clamp the product and drive the product to pass through the film wrapping channel; and a strip cutting assembly used to cut off material strip located on two sides of the two film wrapping rollers in the first direction.