Positive temperature coefficient manufacturing process

The crimping process applied pressure to the top part of the battery containing the current break assembly, the positive temperature coefficient (PTC) and cap-up. After sealing the current break, the PTC, and the cap-up either soldered shut by a laser beam or into a heat-sealed soft pouch, the crimped ceU is pressed to maintain a constant height. The cell is ready for inspection by X-rays to check for any defect and verify the internal assembly of all these elements. After washing with water to remove electrolyte and any impurity at the surface, the ceU is dried to eliminate moisture. FinaUy, the battery in imprinted with the manufacturing factory, line number and date. 

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