The difference between disc brake and drum brake

    Disc brake and drum brake are two braking methods for electric vehicles, which differ in structure, working principle, and manufacturing cost. Disc brake is the friction between the brake caliper and the brake disc that rotates with the wheels to achieve the purpose of braking. Drum brake mainly uses hydraulic devices to cause friction between the friction plate and the inner side of the brake drum that rotates with the wheels, thereby braking. The manufacturing cost of drum brakes is lower, but their heat dissipation effect is not very good.
    Drum brakes have excellent self braking effects. Due to the brake, the brake pads are stretched out, causing the wheels to rotate and the externally stretched brake drums to twist at an angle. The greater the tension on the brake pads, the more significant the situation. Therefore, usually large vehicles still use drum brakes. Drum brakes have a lower level of technology and were also the first to be used in braking systems, resulting in lower manufacturing costs compared to disc brakes. The braking system has a slower response, making it difficult to control the stepping force of the brakes, which is not conducive to high-frequency braking actions. There are many complex components in the structure, and the brake clearance needs to be adjusted, making maintenance difficult.
    Disc brakes have better heat dissipation than drum brakes, and are less likely to cause brake failure due to brake decay when continuously stepping on the brakes. Compared to drum brakes, disc brakes have a simple structure and are very easy to maintain. Due to the lack of automatic braking effect of drum brakes, the braking force of disc brakes is lower than that of drum brakes. The wear of brake pads is significant, which may result in a higher frequency of replacement