In the drone motor industry, the type, thickness and quantity of copper wires form the core "golden triangle" that affects motor performance. With solid technical accumulation, Dongguan Qiwei Electric Machinery Technology Co., Ltd. has gained outstanding influence in this field.
In terms of copper wire types, high-temperature resistant copper wires deliver outstanding advantages. Ordinary copper wires suffer from accelerated insulation aging under high temperatures, which shortens the overall service life of motors. In contrast, high-temperature resistant copper wires feature a greatly upgraded temperature resistance grade. Even when the temperature of internal motor windings rises during high-load operation, such wires can effectively slow down insulation aging and prolong motor service life. Taking high-end DJI drones as an example, their oxygen-free copper windings reduce resistance by 15% compared with conventional copper materials, raise motor efficiency by 8%, and boost flight endurance by 12%.
The thickness of copper wires is also crucial to motor performance. The current-carrying capacity of a conductor is proportional to its cross-sectional area. Thicker copper wires have lower resistance, generate less heat, and can withstand higher current. For instance, a 35mm² copper wire can continuously conduct over 200A current at 40°C, ensuring the wire temperature stays below 65°C even under full-load operation, and delivering stable and sufficient power for motor operation.
The quantity of copper wires cannot be overlooked either. Under the same cross-sectional area, more stranded wires lead to slightly weaker heat dissipation, but optimized structural design can greatly improve comprehensive motor performance. By optimizing the quantity and layout of copper wires, motors can operate stably in complex electromagnetic environments, lower signal interference and improve control accuracy.
With precise control and adaptive matching for copper wire type, thickness and quantity, Dongguan Qiwei motor winding machines empower mass-produced drone motors with strong performance, leading the industry into a new era of high efficiency and high energy saving.