Quality assurance in lithium-ion battery manufacturing using X-ray computed tomography

Battery cell and module development for electric vehicle (EV) applications is experiencing exponential growth. Multiple varieties of battery cell sizes, architectures, and modules are developed, tested, produced, and are already in application within EV battery packs. Battery component manufacturers and cell and automotive OEMs need to ensure that all batteries brought into the market fulfill […]

Further development of non-contact and non-destructive methods for the localization of defects inside battery cells

Reliable non-contact and non-destructive testings are useful for the verification of quality and safety standards of battery cells. The battery cells are commonly electrically characterized. In this case a possible failure is detected but neither identified nor localized. With non-invasive internal visualization of battery cells detailed information about such failures is obtained. Scanning Acoustic Microscopy […]

Microstructural defects in Li-ion batteries and their detection with imaging techniques as a tool for process development and quality evaluation

The increasing demand for batteries for mobile and stationary energy storage applications require further research to increase the energy density and the lifetime of battery cells. The functionality, performance characteristics and quality of the cell are correlated to the microstructural properties of the battery. There are different defects that can occur inside a Li-ion battery. […]

Precise Battery Quality Screening and Selection with Fast Electrochemical Impedance Spectroscopy

Consistent battery cell quality is crucial for the high-volume production of lithium-ion battery systems. A single weak cell can be the limiting factor for the performance, lifetime, and safety of the overall battery system. However, even for mass-produced cell types, quality differences within and between production batches exist due to production process variations and environmental […]

Advances in Direct Electrolyte Leak Testing of Pouch and Hard Case Lithium-Ion Battery Cells

Direct electrolyte leak testing is a key technology for reliable and traceable leak detection for quality control in battery production processes. The interest of quality control is manifold from reduction of maintenance or warranty costs to sustainable battery production with long-living batteries. Most important is to ensure the distribution of only safe and secure batteries. […]