Battery Slurry Coating Head With Integrated Gas Vent Filtration
Solution Overview
Problem
Existing secondary battery manufacturing processes face challenges in effectively removing gas from the slurry applied on a base material, leading to potential slurry leakage and reduced work efficiency.
Innovation Solution
A secondary battery manufacturing device with a nozzle, cavity portion, vent portion, and filtering portion is designed to direct gas away from the slurry, using a filtering frame with a porous membrane and sliding connection for easy assembly, ensuring only gas is discharged while preventing slurry leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If gas removal structure is added to the coating device, then gas removal efficiency is improved, but device complexity increases
Solution Approach 1:
The patent combines the gas removal function with the existing coating structure by integrating a vent portion and filtering portion into the case portion that already houses the nozzle and cavity. The filtering portion is positioned within the existing coating device structure, merging multiple functions (coating application and gas removal) into a single integrated system rather than adding a separate gas removal device.
Solution Approach 2:
The case portion is divided into functional segments: the cavity portion for coating solution transfer, the vent portion for gas discharge, and the filtering portion for separating gas from liquid. This segmentation allows each component to perform its specific function efficiently while maintaining overall system compactness.
2Reliability
If filtering portion is added to separate gas from slurry, then slurry leakage is reduced, but device complexity increases
Solution Approach 1:
The filtering portion acts as an intermediary component positioned between the cavity portion and the vent portion. It selectively allows gas to pass through while blocking liquid slurry, serving as a mediator that separates the two phases without requiring complex mechanical moving parts or control systems.
Solution Approach 2:
The filtering portion utilizes porous material structure that permits gas molecules to pass through while retaining larger liquid droplets. This passive filtration mechanism relies on the physical properties of porous materials rather than active control systems, simplifying the overall device architecture.
3Productivity
If vent portion is extended to outside the case, then gas discharge efficiency is improved, but slurry leakage risk increases
Solution Approach 1:
The filtering portion serves as a protective intermediary between the internal cavity and the external vent opening. It allows gas to reach the vent portion for efficient discharge while acting as a barrier that prevents liquid slurry from escaping through the vent, thus resolving the contradiction between gas discharge efficiency and leakage prevention.
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 device efficiently removes gas from the slurry, reducing slurry leakage and improving production efficiency by maintaining a stable coating process, thereby enhancing the manufacturing process.
Implementation Method 1
a filtering portion (50) positioned between the cavity portion (30) and the vent portion (40), the filtering portion being configured to direct gas contained in the coating solution in a direction toward the vent portion (40) and to prevent or reduce liquid of the coating solution from being directed to the vent portion (40)
Data Source
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AI summary
The present disclosure relates to a secondary battery manufacturing device (1), and technical problems to be solved are directed to providing a secondary battery manufacturing device (1) capable of removing gas from a slurry to be applied on a base material (12). To this end, the present disclosure provides a secondary battery manufacturing device (1) including a case portion (20) provided with a nozzle (26) at a position facing a base material (12) moving through a coating roll (10), a cavity portion (30) located inside the case portion (20) and forming a conduit for transferring a coating solution to the nozzle (26), a vent portion (40) whose one side is installed in a shape surrounding an inlet of the cavity portion (30) and the other side extends to the outside of the case portion (20) to form a path for discharging gas, and a filtering portion (50) located between the cavity portion (30) and the vent portion (40) and configured to move only gas contained in the coating solution in a direction toward the vent portion (40).