September, 2021
www.us-tech.com
safety and cost. The electronic chips are equally as re-
Page 33
Battery Test and Inspection is Critical to EV Performance Continued from previous page the analysis of hidden, inner structures of the battery cells. Hence, quality issues and damage can be identified before a cell leaves the factory. This way, it can be guaranteed that bat-
teries deliver the capacity and output that is required and that no damaged cell is built into a battery module, which could later cause harm or injury. The structure of the battery has a signif-
icant influence on the inspection method — rolled cells can be inspected in 2D and stacked cells require 3D computer tomogra- phy (CT) because layers are a challenge to in- terpret with a single transmissive X-ray image.
Using 2D inspection, a fully
inline analysis can be per- formed, checking 100 percent of the cells, whereas 3D CT takes slightly longer and is performed at a lower sampling frequency. After every inspection cycle, a measurement result file is gen- erated, stored on the AXI sys- tem, and exported to the produc-
quired in internal combustion vehicles for various aspects of an automobile. New tech- nologies have been driven by autonomous EVs, automatic health monitoring, remote shut down, comprehensive car tracking and night vision driving. As vehicles integrate more electronics,
the need for more advanced batteries and quality equipment increases. Nordson Test & Inspection has the capability and technology to test and inspect the battery packs used in electric cars safely and comprehensively. Contact: Nordson DAGE, 2370 Oakridge
Typical Ni cathode Li-ion rechargeable cell with multiple wirebonds.
Way, Suite B, Vista, CA 92081 % 510-683-3930 E-mail:
sales@nordsondage.com Web:
www.nordson.com r
2D slice image of a stacked battery cell.
tion line’s datacenter. The analysis always has the
following two goals: measure- ment of the overhang (distance) between the endpoints of the electrodes to reduce risk of inter- nal shorts and thermal runaway and to determine the number of layers to ensure the cell capacity and construction is per specifica- tion.
Nordson Test & Inspection
offers solutions for the inspec- tion of both battery types, using fully autonomous X-ray systems, that are optimized for 24/7 pro- duction environments to run without operator interaction. In addition to catching de-
fects, the AXI equipment can also be used as a process control tool. By analyzing the defect types, problems in the battery production line can be identified and solved early on. Hence, the X-ray equipment helps avoid to human injuries, reduce risks, and eliminate financial losses. The recent year of electron-
ics shortage in the automotive industry has increased competi- tion in the EV industry. The ve- hicle market focuses not just on new electric car models and bat- teries, but also on the features included in the cars and their re- sulting overall performance,
See at The Battery Show, Booth 1924
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