EPB principle of system operation


EPB refers to the technology that integrates the temporary braking during driving and the long-term braking after parking, and realizes the parking brake by electronic control method. The working principle is the same as that of the mechanical hand brake, and the rear wheels are tightened by cables. Apply the brakes. EPB uses mechanical calipers to generate braking force by chucking the brake pads by the motor. Because of the mechanical caliper, only one button is needed to perform the braking action, which greatly reduces the feeling of gravity caused by the hand brake and becomes easier to manipulate
The realization of the automatic parking system function is not simply accomplished by using an electronic handbrake. People will use the handbrake to park the car when going up and downhill or parking in front of traffic lights. At this time, if you simply use the electronic handbrake, the response speed will be slower. The time for a person to pull and release the handbrake is about 0.3 seconds, and the human control is more flexible than the electronic control. To start the electronic handbrake requires a prerequisite action to step on the brake, and the response time of the button (to avoid misoperation), and The running time of the motor is also too long, about 0.5 seconds. Even when the accelerator is stepped on, the electronic handbrake is automatically released, this action is a bit abrupt, so the realization of the function of the automatic parking system is another principle.

EPB integrates the temporary parking and the time after parking, and uses the parking switch to realize the brake parking technology. The working principle is roughly the same as the machinery, and the brakes are all braked by cables. EPB uses mechanical calipers to generate braking force through the clamping of the brake motor. For control, only a switch can greatly reduce the feeling of gravity and become easy to control.
When driving downhill or parking before traffic lights, the vehicle will be parked with a handbrake. If you use an ordinary handbrake, the corresponding speed will be slow, and the electronic handbrake requires only one brake action, which is convenient and simple.