In the motor manufacturing sector, Resistance Welding (RW) technologies—including spot welding, seam welding, and projection welding—are widely used to meet strict high-strength and high-precision requirements for welded components. RW’s inherent advantages of high automation, fast cycle times, energy efficiency, minimal distortion, and ease of operation, align well with the production demands of the motor industry. This technique is commonly applied in critical assembly processes for motor rotors, drive motor assemblies, motor stators, and new energy motor systems. The resultant weld quality directly affects electrical conductivity, mechanical integrity, and long-term reliability, all of which are essential for motor performance and safety.