Battery Slurry X-Ray Observation for Inert Stirring Control
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Solution Overview
Problem
Existing methods for manufacturing battery slurries struggle to accurately assess the dispersion state of substances like active materials and solid electrolytes during stirring due to the difficulty in observing these substances without exposing them to the atmosphere, leading to suboptimal battery performance and durability.
Innovation Solution
A manufacturing apparatus and method that circulates the slurry between a stirring tank and an observation container without exposure to the atmosphere, using X-ray irradiation to detect the slurry state with high accuracy, and performs three-dimensional analysis to determine the optimal stirring duration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods (torque, viscosity, temperature, visual observation) are used to estimate slurry state during stirring, then the measurement process is simple and does not require complex equipment, but the measurement precision and understanding of slurry state is insufficient
Solution Approach 1:
The patent replaces conventional mechanical and visual estimation methods (torque measurement, viscosity measurement, temperature measurement, visual observation) with X-ray imaging technology. This substitution enables direct visualization of the slurry's internal dispersion state, providing high-precision detection of particle distribution and homogeneity without relying on indirect mechanical parameters.
Solution Approach 2:
The patent introduces an observation container as an intermediary component that allows X-rays to penetrate the slurry while maintaining atmospheric isolation. This intermediary enables the detection system to observe the slurry state without direct contact with the reactive materials, solving both the precision measurement need and the material protection requirement.
2Loss of information
If the slurry is removed from the stirring tank during stirring for observation, then the slurry state can be directly observed, but the sulfur-based solid electrolyte is exposed to the atmosphere causing contamination or degradation
Solution Approach 1:
The patent maintains an inert or controlled atmosphere environment within the stirring tank and observation container system. The observation container is designed to allow X-ray penetration while maintaining atmospheric isolation, enabling continuous observation of the slurry state without exposing the sulfur-based solid electrolyte to harmful atmospheric components during the entire stirring process.
Solution Approach 2:
The observation container serves as an intermediary that transmits X-rays while blocking atmospheric contact. This allows the detection system to obtain slurry state information without removing the slurry from the protected atmosphere, preventing contamination of the sulfur-based solid electrolyte.
3Measurement precision
If X-ray detection is used to observe slurry state, then high-accuracy detection is achieved, but the detection system becomes more complex and requires specialized equipment
Solution Approach 1:
The patent replaces complex mechanical measurement systems (multiple sensors for torque, viscosity, temperature) with a single X-ray imaging system that provides comprehensive visualization of the slurry's internal state. This substitution simplifies the overall detection approach while achieving superior measurement precision through direct imaging of particle distribution and homogeneity.
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
Enables precise detection of the slurry state during stirring, ensuring high-quality battery production by accurately determining when to stop stirring, thereby enhancing initial performance and durability.
Implementation Method 1
a detector configured to detect a state of the slurry by irradiating the slurry in the observation container with X-rays and detecting the X-rays transmitted through the slurry
Data Source
AI summary
To detect the state of a slurry during stirring without exposure to the atmosphere and with high accuracy. A stirring tank stores a slurry for a battery without exposure to the atmosphere. A stirring device stirs the slurry in the stirring tank. An observation container is coupled to the stirring tank. A circulation device circulates the slurry between the stirring tank and the observation container without exposure to the atmosphere. A detection device detects the state of the slurry by irradiating the slurry in the observation container with X-rays and detecting the X-rays transmitted through the slurry.