Incoming inspection of energy storage batteries

What is the purpose of a battery inspection?

In summary, the receiving inspection served to evaluate the general battery condition. Mechanical faults were detected, rough indications of electrical malfunction became visible and the manufacturer’s specifications were checked. However, a quality analysis and classification of the cells was not possible with this information. 4.2.2.

Why do we need high-performance inspection technology for lithium-ion batteries?

The demand for high-performance inspection technology for lithium-ion batteries is prominent with its increasingly diversified application scenarios. However, traditional detection techniques based on the external output response cannot accurately reflect the evolutionary trends within the cell, such as structural changes and product distribution.

What should be a starting point for a battery research?

A starting point could be an evaluation of different batches of the same cell type because in the scope of this work only the cells from a single batch were considered. Furthermore, the applicability to other battery systems should be the subject of future research activities.

Can ultrasonic detection be used for pouch-type lithium-ion batteries?

This review focuses on advances in ultrasonic detection techniques for individual pouch-type lithium-ion batteries, including inspection theory and monitoring applications, as well as the current shortcomings and challenges.

How many incoming inspections are carried out on commercial cells?

To summarize, in the current research landscape, no quick incoming inspection is available and the information about the design of test procedures is scarce. For this reason, in the scope of this work two different test routines in the incoming inspection are carried out on almost 230 commercial cells.

Why is identifying deviations in the electrical behavior of battery cells important?

Depending on the area of application, identifying deviations in the electrical behavior of the battery cells under test can be essential for downstream assembly processes like cell matching and algorithm adaptations of the battery management software.