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"Electrolyte Tracing as an Effective Leak Testing Method for Battery Cells Quality Control"

Ensuring Battery Integrity Through Electrolyte Tracing

Rechargeable batteries power everything from smartphones to vehicles, but defects can compromise performance and safety. Ensuring top quality requires advanced testing and specialized tools. This paper explores risks tied to sealing defects in Li-ion cells, their potential impact, and detection methods. It also introduces a reliable End-of-Line leak testing solution specifically developed for fully sealed battery cells.

What you will learn:

• Innovative Leak Testing Approach: Electrolyte tracing introduces a new end-of-line leak detection method that uses the battery’s own electrolyte vapors as tracers, eliminating the need for external gases like helium and reducing production complexity and cost.
• By applying quadrupole mass spectrometry, the method provides sensitive, repeatable results across different cell formats (pouch, cylindrical, prismatic, and coin), ensuring accurate identification and quantification of leaks.
• Enhanced Battery Quality and Safety: Electrolyte tracing strengthens overall battery quality control by verifying the final sealing integrity, preventing electrolyte loss and contamination ingress, critical factors for long-term performance, safety, and certification compliance.

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