What is the working principle of the brake assembly in new energy vehicles?
2 Answers
The working principle of the brake assembly in new energy vehicles is energy recovery braking. Working principle of the brake assembly: By controlling the system, the entire or partial module of the brake is given the function of reverse energy flow, thereby allowing part of the vehicle's inertial energy to be fed back to the energy storage device, while also serving the purpose of braking the vehicle. Principle of energy recovery: During deceleration or braking, the current supply to the motor rotor is stopped. At the same time, the inertial rotation of the vehicle's wheels drives the rotor to rotate, generating electrical energy. This energy is then stored in the vehicle's power battery pack through the motor controller and high-voltage power distribution system. Methods of energy recovery: Braking energy recovery is achieved by pressing the brake pedal. In new energy vehicles, energy recovery increases the driving range, and the instrument panel displays a negative value (current). Coasting energy recovery involves controlling the accelerator pedal without pressing the brake pedal. The degree of energy recovery is controlled based on the throttle pedal opening below a certain level, thereby achieving energy recovery. This is commonly known as the single-pedal control mode.
I've been driving an electric car for a while and I'm impressed by the clever design of the braking system. When I press the brake pedal, it's not just mechanical friction—thanks to the regenerative braking function, the kinetic energy from the vehicle's movement is converted back into electricity through the motor's reverse operation, recharging the battery. This saves energy and extends the lifespan of the brake pads. The controller adjusts the ratio based on how hard I press: when lightly braking, it mainly recovers energy, operating quietly and smoothly; when braking hard or at high speeds, the hydraulic mechanical system (like disc brakes) kicks in to provide additional stopping power for safety. Throughout the process, sensors monitor wheel speed and pedal position in real time to prevent skidding or delays. I must say, once you get used to it, driving becomes more effortless, saving a lot on electricity and maintenance costs. However, it takes some practice to find the right braking pressure to avoid abrupt stops. Daily maintenance is also simpler since regeneration reduces wear on traditional components.
