Cell & Pack Manufacturing

QA/QC Technologies - High Resolution-High Throughput Ultrasound CALENDARING

Ultrasound has emerged as a promising non-destructive testing approach for battery inspection. Factors such as material properties, density, and porosity influence the interaction of ultrasonic waves with battery materials. In lithium-ion batteries, wave propagation can be described using theories like Biot's theory for fluid-saturated porous media or the slurry model for electrode coatings.

In-line, high voxel count imaging

Thickness & Density Measurement: Measures electrode thickness and uniformity to maintain consistent performance.

Software enabled metrology

Electrolyte Distribution Analysis: Evaluates the uniform distribution of the electrolyte, critical for battery efficiency.

Software enabled electrical test SoC

Quality Control: Ensures proper alignment of components and verifies manufacturing precision. Data Integration: Provides data for process optimization and feedback into manufacturing systems. Defects & Voids: Increases resistance, weakens structure → Reduce efficiency and long-term performance.

Sources: Imperial College London, Liminal Insights, Titan Advanced Energy Solutions

Provider examples:

FORMATION/AGING

Currently deployed at US and EU battery manufacturers

Adaptability to Various Battery Chemistries: Compatible with lithium-ion, solid-state, and other emerging battery technologies.

FILLING

Typically operates on frequencies between 110 MHz

HOW IS IT DONE? - EXAMPLE METHODS

WINDING/STACKING

WHY IS IT IMPORTANT TO CAPTURE THEM?

SLITTING/NOTCHING

WHAT ARE THE FEATURES?

EOL

Extracted from the PDF; charts and images may read imperfectly.