Adjustable Coating Die Head for Uniform Slurry Extrusion
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Solution Overview
Problem
Conventional coating devices fail to guarantee the consistency of extrusion velocity for slurries of varying viscosities during the coating process, leading to issues such as cracking and bulging, which affect the quality of battery electrode plates.
Innovation Solution
A coating die head with an adjustable turbulence assembly that defines a flow channel within the accommodating cavity, allowing for adjustments in volume, shape, and position to match the viscosity of different slurries, ensuring consistent extrusion velocity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional coating devices are used, then the coating process can be performed, but the consistency of extrusion velocity cannot be guaranteed for slurries of varying viscosities
Solution Approach 1:
The turbulence assembly is designed to be adjustable within the accommodating cavity, allowing the flow channel geometry to be dynamically changed according to slurry viscosity requirements. This enables the coating device to adapt to different slurry viscosities while maintaining consistent extrusion velocity, resolving the contradiction between manufacturing precision and adaptability.
Solution Approach 2:
The invention changes the geometric parameters of the flow channel by adjusting the turbulence assembly position and configuration. This allows optimization of flow resistance and extrusion velocity distribution for different slurry viscosities, thereby maintaining manufacturing precision across varying material properties.
2Adaptability or versatility
If the turbulence assembly is fixed, then the device structure is simple, but it cannot meet the requirement for coating with slurries of different viscosities
Solution Approach 1:
The turbulence assembly is designed with adjustable components that can be repositioned within the accommodating cavity. This dynamic configuration allows the same device structure to serve multiple viscosity requirements without requiring completely different devices, balancing adaptability with manageable complexity.
Solution Approach 2:
The adjustable turbulence assembly serves multiple functions: it can be configured for different slurry viscosities, maintain extrusion velocity consistency, and work within a single accommodating cavity structure. This multi-functionality reduces the need for multiple specialized devices, managing overall system complexity.
3Manufacturing precision
If the flow channel is not adjusted, then the device structure is simple, but the extrusion velocity distribution is inconsistent for different slurry viscosities
Solution Approach 1:
The turbulence assembly creates localized flow control within the accommodating cavity. By positioning the turbulence members strategically, the invention achieves uniform extrusion velocity distribution at the coating outlet without requiring complex flow channel redesign throughout the entire device, thus managing structural complexity while improving manufacturing precision.
Solution Approach 2:
The turbulence assembly acts as an intermediary element between the accommodating cavity and the coating outlet. It mediates the flow characteristics of different viscosities to achieve consistent extrusion velocity distribution, adding a controllable intermediate stage rather than redesigning the entire flow channel system.
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 ensures uniform extrusion velocity across the coating width direction, improving the product quality by adapting to different slurry viscosities and preventing defects like cracking and bulging.
Implementation Method 1
the turbulence assembly defines a flow channel with a cavity wall of the accommodating cavity
Data Source
AI summary
A coating die head may comprise: a coating main body comprising a first die head and a second die head arranged separately, the first die head and the second die head being spliced to define an accommodating cavity, and opposite ends of the coating main body being respectively provided with a coating inlet and a coating outlet which are in communication with the accommodating cavity; and a turbulence assembly which defines a flow channel with a cavity wall of the accommodating cavity, the turbulence assembly being adjustably arranged in the accommodating cavity.