Wet Atomizer Sealing and Inert Gas Handling for Battery Slurries
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Solution Overview
Problem
The production of all-solid-state battery raw materials faces challenges in achieving uniformity, sealing, operability, and maintenance due to the high hardness of oxide-based materials and the reactivity of sulfide-based materials, which complicates mass production and poses safety risks.
Innovation Solution
A wet atomizer system comprising a liquid supply pump, pressure intensifier, high-pressure filter, chamber, sealing member, and inert gas supply unit ensures sealing, operability, and maintenance by processing all-solid-state battery raw materials under inert gas conditions, using a high-pressure filter to achieve uniform particle sizes and minimize contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If oxide-based solid electrolyte material is used, then high hardness and structural stability are achieved, but difficulty in crimping into integral solid state and downsizing occurs
Solution Approach 1:
The patent changes the physical state parameter of the oxide-based solid electrolyte material from solid particles to slurry form by mixing with liquid binder, enabling it to be crimped into integral solid state and downsized while maintaining high hardness characteristics after drying
2Ease of manufacture
If sulfide-based solid electrolyte material is used, then softness and ease of crimping are achieved, but difficulty in maintaining uniformity and reactivity with water generating toxic gas occurs
Solution Approach 1:
The patent employs an inert atmosphere (nitrogen or argon gas) in the processing chamber to prevent sulfide-based solid electrolyte material from reacting with water vapor in the air, thereby eliminating toxic gas generation while maintaining ease of crimping into integral solid state
Solution Approach 2:
The patent introduces liquid binder as an intermediary substance to mix with sulfide-based solid electrolyte particles, forming a slurry that maintains uniformity during processing and prevents direct exposure to moisture, thereby preventing toxic gas generation
3Productivity
If jet mill device is used for atomization, then processing capability is achieved, but sealing property and maintenance property become difficult to ensure
Solution Approach 1:
The patent replaces the conventional jet mill mechanical atomization system with a wet atomization system using liquid supply pumps and pressure intensifiers, which operates in a sealed chamber with inert gas atmosphere, thereby achieving high processing capability while ensuring sealing property and ease of maintenance
4Manufacturing precision
If uniformity of all materials is improved, then battery performance is enhanced, but processing complexity increases
Solution Approach 1:
The patent combines multiple processing functions (mixing, atomization, drying, and uniformity control) into a single integrated wet atomization system operating in inert atmosphere, achieving uniform distribution of all materials while simplifying the overall processing 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 system effectively processes all-solid-state battery raw materials with ensured sealing, operability, and maintenance, achieving uniform particle sizes and safety by minimizing toxic gas release and oxidation, facilitating mass production.
Implementation Method 1
a liquid supply pump configured to supply all-solid-state battery raw materials
Implementation Method 2
a pressure intensifier configured to pressurize the all-solid-state battery raw materials supplied from the liquid supply pump
Implementation Method 3
a high-pressure filter configured to filter the all-solid-state battery raw materials pressurized by the pressure intensifier
Implementation Method 4
a sealing member configured to seal a space for processing the all-solid-state battery raw materials
Implementation Method 5
an inert gas supply unit configured to supply inert gas to the sealing member
Data Source
AI summary
Provided is a wet atomizer for processing all-solid-state battery raw materials while ensuring sealing property, operability after completion of processing, and maintenance property. The wet atomizer includes a liquid supply pump for supplying the all-solid-state battery raw materials, a pressure intensifier for pressurizing the all-solid-state battery raw materials supplied from the liquid supply pump, a high-pressure filter for filtering the all-solid-state battery raw materials pressurized by the pressure intensifier, a chamber for injecting the all-solid-state battery raw materials filtered by the high-pressure filter, a sealing member for sealing the space for processing the all-solid-state battery raw materials, and an inert gas supply unit for supplying an inert gas to the sealing member.