Intermittent Coating Valve Geometry for High-Speed Slurry Accuracy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge is to improve the accuracy of applying an electrode slurry in intermittent coating for secondary battery electrode plates while also reducing manufacturing time, which is compromised by high-speed application methods.
Innovation Solution
An intermittent valve with a valve main unit, piston, supply valve, and return valve is designed to switch between supply and non-supply of the coating material. The valve diameter of the supply valve is 1.53 times or more than that of the return valve, enhancing the suck back effect to prevent material scattering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If electrode slurry is intermittently applied to metal foil at high speed to shorten manufacturing time, then productivity is improved, but manufacturing precision deteriorates
Solution Approach 1:
The patent changes the parameter of valve diameter ratio between supply and return valves. By setting the supply valve diameter to be larger than the return valve diameter (specifically 1.05 times or more), the system optimizes the suck back effect to prevent coating material from scattering during high-speed intermittent coating, thereby maintaining coating accuracy while enabling high-speed operation
Solution Approach 2:
The patent applies preliminary anti-action by designing the return valve with a smaller diameter than the supply valve. This creates a controlled resistance to backflow that prevents coating material from scattering during the non-supply phase, counteracting the potential harm of material leakage before it occurs during high-speed intermittent coating operations
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 solution effectively increases the suck back amount of the coating material, improving the accuracy of application and reducing material scattering, thereby enabling faster manufacturing times without compromising quality.
Implementation Method 1
the valve diameter of the supply valve is 1.53 times or more the valve diameter of the return valve, enhancing the suck back effect to prevent material scattering
Data Source
AI summary
An intermittent valve includes: a valve main unit having: an inflow chamber, a supply chamber and a return chamber; a piston; a supply valve allowing a coating material to flow from the inflow chamber to the supply chamber when the piston is in a first position and blocking the flow when the piston is in a second position; and a return valve blocking the coating material from flowing from the inflow chamber to the return chamber when the piston is in the first position and allows the flow when the piston is in the second position. The valve diameter of the supply valve is 1.53 times or more the valve diameter of the return valve.