The ultimate concept of replacing fuel vehicles is driving the fast charging performance of batteries from 2C to 4C and 6C, with some companies even achieving the highest level of 8C.

At present, fast charging technology is mainly achieved through high voltage, and one of its requirements for battery materials and structural systems is to withstand high voltage. In the manufacturing process, multi-layer pole ear welding has become a shortcoming on the road towards the fast charging era.

The number of layers of electrode ear welding is positively correlated with fast charging performance. The more layers there are, the lower the internal resistance of the battery, the better the rate performance, and the better it can withstand high voltage fast charging. At present, the number of layers for pole ear welding is about 60, and battery manufacturers have proposed a next-generation requirement of over 100 layers. There is a gap in key performance indicators between the supply and demand sides.

Not only is there a lot of space in the number of layers, but multi-layer long pole ear welding is also a bottleneck that energy storage/lithium battery industry manufacturers urgently need to break through. Multiple welding not only has low efficiency and high cost, but also needs to be improved in terms of welding yield.

In addition, as the industrialization of new foil composite current collectors accelerates, the insulation properties of the base film in the composite current collectors make it difficult for mainstream welding processes to meet their multi-layer welding requirements.

At present, the process urgently needs to be reformed. After more than two to three years of technological breakthroughs, Shenzhen Shenyuan Ultrasonic has developed a new model of multi-layer roller welding machine that is different from traditional spot welding machines. It has exploded with vitality in the multi-layer pole ear welding process, helping customers reduce costs and increase efficiency!

Ultrasonic multi-layer roller welding machine is a new application for traditional spot welding machines, which can complete welding in one go for ultra long welding. Suitable for welding multi-layer foil materials and weldable materials for long-distance welding.

SFY-GH-2060

✔ No limit on welding length

✔ Accurate welding positioning

✔ The solder joints are uniform, stable, and flat

✔ Stable and reliable welding quality, high efficiency

✔ Real time monitoring of welding feedback data

✔ Adaptive welding length

✔ Operation modification backend records, traceable

✔ Intelligent algorithm integrated welding monitoring system

Deep source ultrasonic multi-layer roller welding machine