New energy brake pads

Although the working principle of new-energy vehicle brake pads is essentially the same as that of conventional fuel vehicle brake pads—both convert the vehicle’s kinetic energy into thermal energy by friction with the brake disc to achieve deceleration—new-energy vehicles have unique characteristics, such as energy recovery systems and greater overall vehicle weight. As a result, their brake pad material selection, adaptation performance, and usage and maintenance all have distinctive features. The following is a detailed introduction:

Core adaptation features

Compatible with Energy Recovery Systems: New-energy vehicles are generally equipped with energy recovery systems. During light braking, the motor reverses direction to slow down the vehicle; brake pads only engage heavily in scenarios such as emergency braking or low-speed driving. As a result, brake pad usage frequency in daily driving is 30%–40% lower than in conventional fuel vehicles. However, the battery adds 20%–30% to the vehicle’s overall weight, increasing the instantaneous friction force on the brake pads by 50%. Therefore, brake pads must not only meet anti-rust requirements suited to their lower usage frequency but also withstand the performance challenges posed by high-intensity braking.

Adaptation to High-Temperature Operating Conditions: Due to the energy conversion characteristics during braking in new-energy vehicles, as well as factors such as heat dissipation from the motor controller, brake disc temperatures are 20% to 30% higher than those in fuel-powered vehicles. This necessitates that brake pads exhibit enhanced thermal stability to prevent thermal fade at high temperatures, which could otherwise lead to a reduction in braking performance.