Electrode Slurry Pressure Control for Uniform Pattern Coating
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Solution Overview
Problem
Conventional electrode slurry coating apparatuses struggle to uniformly coat electrode slurry on current collector layers with repeated coated and non-coated parts, due to excessive load and pressure variations during the discharge and interruption of the electrode slurry.
Innovation Solution
The electrode slurry coating apparatus includes a pressure regulating member comprising an electrode slurry storage tank and a static pressure opening and closing valve. This valve opens or closes based on the pressure difference between the electrode slurry discharge flow path and the storage tank, maintaining a constant pressure and preventing excessive discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the electrode slurry discharge flow path repeatedly discharges and interrupts the electrode slurry to create coated and non-coated parts, then the coating pattern is formed, but excessive load is taken into the discharge flow path causing uneven coating thickness
Solution Approach 1:
The patent introduces a pressure regulating member that dynamically adjusts the pressure of electrode slurry in the discharge flow path during repeated discharge and interruption cycles. This dynamic pressure regulation prevents excessive load accumulation and maintains consistent coating thickness across coated parts while enabling the formation of the desired coating pattern.
2Shape
If the electrode slurry is discharged repeatedly to form coated and non-coated parts, then the coating pattern is achieved, but the discharge flow path experiences excessive load causing coating defects
Solution Approach 1:
The pressure regulating member acts as an intermediary between the electrode slurry supply and the discharge flow path. It mediates the pressure transmission during repeated discharge cycles, preventing excessive load from directly affecting the coating process and thereby maintaining coating quality and reliability.
3Shape
If conventional coating apparatus is used with repeated discharge and interruption, then coating pattern is formed, but uniform electrode coating cannot be achieved
Solution Approach 1:
The patent changes the pressure parameter of the electrode slurry during the coating process by introducing a pressure regulating member. This parameter change allows the system to maintain optimal pressure conditions during repeated discharge and interruption, achieving both the desired coating pattern and uniform coating thickness.
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 pressure regulating member ensures a constant and controlled discharge of electrode slurry, preventing uneven coating and product defects, thereby achieving uniform electrode coating even with repeated coated and non-coated parts.
Implementation Method 1
an opening or closing of the static pressure opening and closing valve is determined according to a difference between a pressure of the electrode slurry discharge flow path and an internal pressure of the electrode slurry storage tank
Data Source
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AI summary
The present invention relates to an electrode slurry coating method and apparatus comprising a pressure adjustment member for adjusting the discharge pressure of slurry, and enables electrode slurry to be discharged under constant pressure even when a coated part and an uncoated part are repeatedly formed on a current collector layer.