The difference between voice coil motor and hollow cup motor

The difference between voice coil motor and hollow cup motor lies in the structure and working principle.

Voice coil motor consists of fixed magnetic pole and rotatable coil. When the current passes through the coil, the generated magnetic field interacts with the fixed magnetic pole, thus generating torque and making the motor run. Voice coil motors are usually used for small loads, such as car wipers and toys. Different from voice coil motor, hollow cup motor is hollow inside and consists of two main parts: winding and permanent magnet. When the current passes through the winding, the generated magnetic field interacts with the permanent magnet, thus generating torque and rotating the motor. In contrast, hollow cup motor has higher power density and efficiency, and is widely used in household appliances, automobiles and other fields.

With the development of science and technology and the improvement of application requirements, people have higher and higher requirements for the performance and quality of motors, and motor manufacturers need to innovate and optimize their designs to meet the market demand.