Electrode Layer Coating Gap Control for Thickness Uniformity
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Solution Overview
Problem
Existing methods for manufacturing electrode layers in semi-solid state batteries result in non-uniform thickness distribution due to undulations in the transport member, leading to inconsistencies in the electrode material film.
Innovation Solution
A manufacturing method that involves measuring the surface shape of the transport member, placing a collector foil, and using a film forming member with adjustable position and vibration to regulate the thickness of the electrode material film based on the surface shape measurements, ensuring uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a transport member is used to continuously transport the collector foil, then productivity is improved, but the surface undulations of the transport member cause non-uniform thickness distribution in the electrode material film
Solution Approach 1:
The surface shape of the transport member is measured in advance before the electrode material is supplied. Based on the measurement results, the disposing position of the film forming member is predetermined and adjusted to compensate for the surface undulations. This preliminary measurement and positioning approach allows the system to pre-correct for known surface irregularities, enabling continuous manufacturing while maintaining thickness uniformity.
Solution Approach 2:
The system uses measurement information from the transport member's surface shape as feedback to adjust the disposing position of the film forming member. The measurement results directly inform the positioning adjustment, creating a closed-loop control system that compensates for surface undulations in real-time, thereby maintaining uniform electrode material film thickness during continuous production.
2Manufacturing precision
If the film forming member is positioned close to the transport member surface to reduce gap variability, then thickness uniformity is improved, but the risk of contact and damage increases
Solution Approach 1:
The surface shape of the transport member is measured in advance, and based on these measurements, the disposing position of the film forming member is predetermined. This allows the system to establish an optimal distance that compensates for surface undulations without requiring the film forming member to be positioned extremely close to the transport member surface, thereby reducing contact risk while maintaining thickness uniformity.
Solution Approach 2:
The system dynamically adjusts the disposing position parameter of the film forming member based on the measured surface shape characteristics. By changing the position parameter according to actual surface conditions rather than using a fixed minimal distance, the system achieves thickness uniformity while maintaining a safe operational clearance that prevents contact damage.
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 method achieves an electrode layer with excellent in-plane thickness uniformity by controlling the film forming process to compensate for surface irregularities in the transport member.
Implementation Method 1
a step D of passing the electrode material supplied onto the collector foil through a gap formed between the transport member and a distal end of a film forming member which is disposed at a position spaced apart from a surface of the transport member to regulate a thickness of the electrode material
Implementation Method 2
the blade vibrates
Data Source
AI summary
Provided is a manufacturing method of an electrode layer, including a step A of measuring a surface shape of a transport member, a step B of placing a collector foil on the transport member after the surface shape is measured, and transporting the collector foil by moving the transport member, a step C of supplying, onto the transported collector foil, an electrode active material containing an electrode active material, a conductive auxiliary agent, and an electrolytic solution, and a step D of passing the electrode material supplied onto the collector foil through a gap formed between the transport member and a distal end of a film forming member which is disposed at a position spaced apart from a surface of the transport member to regulate a thickness of the electrode material and form an electrode material film, in which, in the step D, a disposing position of the film forming member is controlled based on measurement information of the surface shape of the transport member, which is obtained in the step A.