This electric welder completes the inter-cell connection weld, short-circuit and weld quality test (internal resistance test).
After the COS and plate insertion, the battery is conveyed to the polarity and short circuit test station, automatically positioned and stopped. If short circuit is detected, the machine will trigger the alarm, and the battery will be rejected; qualified batteries are delivered to the inter-cell welding station. If the welding process works abnormally, unqualified batteries will be rejected. If the welding condition is qualified, the batteries undergo another short test and weld quality (internal resistance) test before being delivered to the next station.