Battery Case Powder Dip Coating for Uniform Insulating Films
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Solution Overview
Problem
The production efficiency and quality of batteries are hindered by issues such as bubbles, wrinkles, and peeling of the insulating film caused by enveloping methods, which result in low efficiency and poor quality coatings.
Innovation Solution
A coating device and method utilizing a fluidization tank, clamp, and heating mechanisms to perform a dip-coating process, where the battery case is preheated and dipped into dip-coating powder, allowing the powder to melt and adhere uniformly, forming a strong insulating film without the need for adhesives and enabling batch processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If enveloping method is used to form insulating film, then film formation is achieved, but bubbles, wrinkles and peeling occur reducing quality
Solution Approach 1:
The patent changes the physical and chemical parameters of the coating process by using dip-coating with powder materials and controlled heating, transforming the enveloping method into a deposition method where powder melts and adheres to the battery case surface, eliminating bubbles and wrinkles
Solution Approach 2:
The patent utilizes phase transition of the dip-coating powder from solid to liquid state through heating, allowing the powder to melt and form a uniform insulating film on the battery case surface, avoiding the defects of enveloping methods
2Manufacturing precision
If dip-coating process is used, then coating quality improves, but production efficiency decreases
Solution Approach 1:
The patent applies preliminary heating to the battery case before dip-coating, ensuring the surface temperature is sufficient for powder melting and adhesion, which improves coating quality while maintaining efficient production flow
Solution Approach 2:
The patent implements continuous dip-coating processing where multiple battery cases can be coated sequentially without interrupting the heating or coating process, maintaining continuous productive action while ensuring high coating quality
3Productivity
If batch processing is implemented, then production efficiency improves, but process control complexity increases
Solution Approach 1:
The patent designs the coating device with universal components that can handle multiple battery cases simultaneously, using a common heating mechanism and dip-coating system that serves multiple functions, simplifying control while enabling batch processing
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 enhances the quality and efficiency of battery coatings by preventing bubbles and wrinkles, ensuring strong adhesion and uniformity of the insulating film, thereby improving overall battery production efficiency and quality.
Implementation Method 1
a first heating mechanism for heating the battery case so that the dip-coating powder around the battery case is melted and adhered to the surface of the battery case
Implementation Method 2
the battery case with a high-temperature surface causes the dip-coating powder around it to melt
Data Source
AI summary
Disclosed are a coating device and a coating method. The coating device includes: a fluidization tank for containing a dip-coating powder therein; a clamp for clamping a battery case and dipping the battery case in the dip-coating powder in the fluidization tank; and a first heating mechanism for heating the battery case so that the dip-coating powder around the battery case is melted and adhered to the surface of the battery case to form an insulating film.