Equipment-level process simulation
HAI Simulation Lithium Battery Slurry Preparation Process Simulation Solution
1、Overview
Defects in lithium battery slurry preparation include uneven distribution of mixed materials, unstable slurry viscosity, substandard solid content, particle sedimentation, and "dead zones" during mixing. These defects negatively impact battery performance (e.g., capacity, charge/discharge efficiency, cycle life). Slurry mixing quality directly affects subsequent processes like coating, calendering, and electrolyte wetting. Therefore, controlling slurry preparation quality is critical for ensuring final battery performance and stability.
2、Implementation Approach
- Dry Powder Mixing (Discrete Element Method, DEM): Simulates motion characteristics of dry powder particles during feeding.
- Wetting Simulation (Wet Particle Mixing): Models partial wetting of dry particles and adhesion forces between wet particles.
- Slurry Mixing (DEM + CFD): Analyzes fluid dynamics and fluid-discrete particle interactions during mixing.
3、Objectives
- Investigate impacts of process parameters (e.g., stirring speed, feeding sequence, dosing methods) on mixing efficiency.
- Optimize time allocation for each mixing stage to reduce total mixing duration.
- Establish scaling effects and mixing efficiency relationships to streamline lab-pilot-mass production scale-up processes.
