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Delta Achieves Precision Control Laser Welding

By Nicky Callinan on February 11th, 2015
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Delta recently provided a positioning and control solution for the laser welding production line of a major lithium iron phosphate (LiFePO4) or LFP battery manufacturer in China, to increase the quality and safety of the battery production.

Favoured for its high discharge power, fast charging, long cycle life, the lithium iron phosphate (LiFePO4) or LFP battery is increasing in production for use by hybrid and electric vehicles. Central to the manufacture of these LFP batteries is the welding process used to connect the battery cap and case.

The total solution adopted Delta’s human machine interface (HMI), industrial Ethernet solution, programmable logic controller (PLC), and AC servo drives and significantly improved overall production efficiency, completing 60 welding processes completed each hour, saving time and labour costs.

To control 18 axes that carry the batteries in the laser welding process, the system adopted 18 AC Servo Drives ASDA-A2-F Series. Each axis achieves high speed, high precision positioning control in the area of 300 mm x 450 mm.

Users can monitor the production quality of the production line through Delta’s HMI DOP-B10E615 Series with user-defined interface, editable software, and colour touchscreen.

Delta’s industrial Ethernet switch DVS-016W01 Series connects the control system of the laser welding process with 16 communication ports, and supports various communication protocols even in harsh working environments (-40°C~75°C).

The solution also adopted Delta’s mid-range PLC AH500 Series with motion control module AH20MC and RTU module AHRTU-DNET for excellent motion control. The built-in hot-swapping function keeps the AH500 Series PLC running during maintenance, which greatly saves time and cost for the production process.

With Delta’s solution, the LFP battery production line can complete 60 laser welding processes within 1 hour, saving time and labor costs while enhancing production efficiency for the customer. Now and in the future, Delta Industrial Automation will continue to support customers in these highly competitive markets.