Electric Bike refers to the use of batteries as an auxiliary energy on the basis of ordinary bicycles, the installation of motors, controllers, batteries, steering handles and other control components and display instrumentation system of mechatronics personal transport.
The main components
The charger is a device that replenishes the battery, and is generally divided into a two-stage charging mode and a three-stage mode. The two-stage charging mode: first constant voltage charging, the charging current gradually decreases with the rise of the battery voltage. After the battery power is replenished to a certain extent, the battery voltage will rise to the set value of the charger, and at this time, it is converted into trickle charging. Three-stage charging mode: When charging starts, the first constant current is charged, and the battery is quickly replenished; when the battery voltage rises, it is converted to constant voltage charging. At this time, the battery energy is slowly replenished, and the battery voltage continues to rise; the charging end voltage of the charger is reached. When the value is changed, it is switched to trickle charge to maintain the self-discharge current of the battery and the supply battery.
The battery is the on-board energy that provides the energy of the electric vehicle, and the electric vehicle mainly uses the lead-acid battery combination. In addition, nickel-metal hydride batteries and lithium-ion batteries have also been used on some lightweight folding electric vehicles.
The controller is the component that controls the speed of the motor and is the core of the electric system of the electric vehicle. It has undervoltage, current limiting or overcurrent protection. The intelligent controller also has a variety of riding modes and self-checking functions for vehicle electrical components. The controller is the core component of electric vehicle energy management and various control signal processing.
The booster sensor is a device that detects the riding pedal force back to the pedal speed signal when the electric vehicle is in the assist state. The controller automatically matches the manpower and power according to the electric drive power to jointly drive the electric vehicle to rotate. At present, the most popular power-assisted sensor is a mid-axis bilateral torque sensor. Its product features are capable of collecting the pedaling forces on both sides, and adopts a non-contact electromagnetic signal acquisition method, thereby improving the accuracy and reliability of signal acquisition.
The most important accessory for an electric bicycle is the electric motor. The electric motor of an electric bicycle basically determines the performance and grade of the electric bicycle. The electric motors used in electric bicycles are mostly high-efficiency rare earth permanent magnet motors, among which there are three types of high-speed brushed teeth + wheel reducer motors, low-speed brush motors and low-speed brushless motors.
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