How can electric vehicle brake pads effectively reduce the harsh noise generated during braking and improve driving comfort through structural design or material selection?
Publish Time: 2025-05-07
With the increasing popularity of electric vehicles, driving comfort has become one of the focuses of consumers. The harsh noise generated during braking not only affects the driving experience, but may also cause discomfort to passengers. Electric vehicle brake pads can effectively reduce this noise and improve driving comfort through clever structural design and reasonable material selection.From the perspective of structural design, the edge treatment of brake pads is crucial. Traditional brake pads have sharp edges, which are prone to uneven friction with the brake disc during braking, causing harsh noise. Today, many advanced brake pads use a beveled edge design. This design can make the contact between the brake pad and the brake disc smoother, reduce grabbing and jumping, and thus reduce noise. In addition, the groove design on the surface of the brake pad also plays an important role. The groove divides the surface of the brake pad into multiple smaller areas, reducing the impact of thermal deformation on the braking process. At the same time, the groove can also divide the friction material into separate units, change the vibration frequency and amplitude of the brake part, and achieve the effect of noise reduction. Moreover, the grooves provide a release path for the gas generated during braking, avoiding the accumulation of gas between the brake pad and the brake disc, further reducing the generation of noise.In terms of material selection, the new low-noise formula brake pad has become an effective means to reduce noise. Ceramic brake pads are a typical representative of them. They are made of ceramic fibers and high-temperature resistant materials and have excellent noise reduction performance. When braking, the unique material of ceramic brake pads can make the friction process smoother and reduce the noise caused by uneven friction. At the same time, ceramic brake pads have their own lubrication properties, which can form a lubricating film between the brake pad and the brake disc, reducing the friction coefficient between the two, thereby effectively reducing the generation of noise. In addition to ceramic materials, PEEK brake pads also perform well in noise reduction. PEEK material has good mechanical strength and physical and chemical properties, and its stable friction coefficient makes the braking process smoother. Moreover, PEEK brake pads have their own lubrication properties, which can avoid noise caused by friction and provide a quieter environment for drivers and passengers.In addition, the design and material selection of the brake pad backing also play a key role in noise reduction. Applying high-temperature silencing paste on the back of the brake pad is a common noise reduction method. High-temperature silencing paste can form a heat-insulating and shock-absorbing barrier between the brake pad and the brake caliper, reducing the transmission of vibration force and thus reducing the generation of noise. At the same time, choosing the right backing material can also effectively reduce noise. Some high-performance brake pad backings use materials with shock-absorbing functions, which can absorb the vibration energy generated during braking and further reduce the spread of noise.Electric vehicle brake pads reduce the harsh noise generated during braking from multiple aspects by optimizing structural design and carefully selecting materials. These improvements not only improve driving comfort, but also inject new vitality into the development of electric vehicles, allowing consumers to enjoy the convenience and environmental protection brought by electric vehicles while also having a quieter and more comfortable driving experience.
