Advantages of using pure copper coils for motors？

The micro DC motor can provide high speed output to drive the load. The motor is composed of two parts: the stator and the rotor. The rotor core is wound with a pure copper coil. The function of the winding is to generate electromagnetic torque and induced electromotive force. Common coil materials are pure copper coils. Copper coils, and some are made of aluminum coils. The miniature DC of pure copper coils is heavier than the aluminum core motor at the same level, and the volume will be slightly larger. When you disassemble the DC motor, you can find that the coil colors are different, and some are made of copper. It is made of aluminum-clad material. The core of the coating layer is white, which is the aluminum core. The resistance of the aluminum core is larger than that of the copper core. Compared with the aluminum core coil, the pure copper coil has the following characteristics.

1. The use of pure copper coils for miniature DC motors is not easy to generate heat, and the service life will be longer than that of aluminum coils.

2. The noise of the copper coil micro motor will be smaller, and the noise of the aluminum coil micro motor is about 2 times that of the copper coil.

3. The electrical conductivity of pure copper micro motors is better than that of aluminum wires. Aluminum wire micro motors will generate heat after working for a long time, and the overall performance is not as stable as pure copper micro DC motors. The power of aluminum wire DC motors is much smaller than that of pure copper motors. The copper micro DC motor is about 20% smaller.

4. For pure copper coil micromotors, it will save more power. The resistance in the circuit components is proportional to the heat generation. The greater the resistance, the greater the heat, and vice versa.

5. Compared with copper wire motors, aluminum wire micro motors are lighter in weight and cheaper in price, but have poor mechanical strength, and are prone to oxidation at the ends of the connecting wires. After oxidation, the temperature of the motor will rise and the contact will be poor. Lead to failure, the aluminum wire motor is not easy to weld, the strength is small, and the melting point is low, causing the temperature rise to be too high and the loss to increase.