Cam-Driven Intermittent Valve for High-Speed Electrode Coating
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Solution Overview
Problem
The increasing demand for secondary battery electrode plate manufacturing requires a reduction in manufacturing time while maintaining application accuracy, which is hindered by the responsiveness limitations of conventional intermittent valve devices.
Innovation Solution
An intermittent valve device with a cam-driven mechanism that switches between supply and non-supply states, allowing for high-speed switching of coating material to the die, ensuring accurate and efficient application of electrode slurry on metallic foils.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If electrode slurry is intermittently applied on metallic foil at high speed to reduce manufacturing time, then productivity is improved, but application accuracy deteriorates due to responsiveness limitation of the intermittent valve
Solution Approach 1:
The patent replaces the conventional mechanical intermittent valve mechanism with a valveless die system. The die itself is designed with a movable portion that can be displaced by a drive unit (such as a piezoelectric actuator or magnetic actuator) to control the opening and closing of the valve hole, thereby eliminating the need for a separate mechanical intermittent valve and enabling faster response times for high-speed intermittent coating while maintaining application accuracy
Solution Approach 2:
The patent introduces a movable die structure where the die can be dynamically displaced between open and closed states. The drive unit enables rapid positional changes of the die, allowing the system to adapt to high-speed intermittent coating requirements while precisely controlling the timing and duration of slurry discharge to maintain application accuracy
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 solution enables high-speed intermittent coating while maintaining application accuracy, reducing manufacturing time and ensuring the quality of electrode plates.
Implementation Method 1
a cam that rotates in one direction with a circumferential surface of the cam connected to the intermittent valve
Data Source
AI summary
An intermittent valve device includes: an intermittent valve capable of switching between a first state in which a coating material is supplied to a die that applies the coating material onto a material to be coated and a second state in which the supply of the coating material is stopped; and a drive unit that switches the first state and the second state of the intermittent valve. The drive unit includes a cam that rotates in one direction with a circumferential surface of the cam connected to the intermittent valve. The cam includes, on the circumferential surface, a first shape part that places the intermittent valve in the first state, and a second shape part that places the intermittent valve in the second state.