Main components of electric bicycle
The charger is a device for replenishing the battery, and is generally divided into a two-stage charging mode and a three-stage mode. 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 will be converted to trickle charging. Three-stage charging mode: When charging starts, the constant current is charged first, 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 portable folding electric vehicles.
Usage Tip: The main control board of the controller is the main circuit of the electric vehicle, which has a large working current and will generate a large amount of heat. Therefore, do not park the electric vehicle in the sun, and do not expose it to rain for a long time to avoid malfunction of the controller.
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.
4. Turning, brake
The handle, the brake lever, etc. are the signal input components of the controller. The turn signal is a drive signal for the rotation of the electric vehicle motor. The brake lever signal is an electrical signal that the internal electronic circuit of the brake lever outputs to the controller when the electric vehicle brakes; after receiving the signal, the controller cuts off the power supply to the motor, thereby implementing the brake power-off function.
5. Power sensor
When the electric power is a vehicle sensor in a boosting state detecting means back to riding the pedal force of the pedal velocity signal. The controller is based on the electric drive power,
Bicycle torque sensors
Bicycle torque sensors
It achieves automatic matching between manpower and power, and drives the electric car to rotate together. At present, the most powerful 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.
A motor is a component that converts battery power into mechanical energy and drives the electric wheel to rotate. There are many types of motors used in electric vehicles, such as the mechanical structure, the range of speeds, and the form of energization. Common ones are: brushed gear hub motor, brushless gearless hub motor, brushless gearless hub motor, brushless gear hub motor, high disk motor, side-mounted motor, etc.
7. Lamps and meters
The luminaire and instrument section are a combination of components that provide illumination and display the status of the electric vehicle. The meter generally provides battery voltage display, vehicle speed display, riding status display, and lamp status display. Intelligent meters can also display fault conditions in the electrical components of the vehicle.
8. Common construction
Most electric bicycles use a hub-type motor to directly drive the front or rear wheels. These hub-type motors are matched with wheels of different wheel diameters according to different output speeds to drive the whole vehicle at a speed of up to 20km/h. Although the shape of these electric vehicles is not the same as the installation position of the battery, the driving and control principles are common. This type of electric bicycle is the mainstream in electric vehicle products.
9. Specially constructed electric bicycle
A small number of electric vehicles are driven by non-wheel hub motors. These electric vehicles use side-mounted or columnar motors, center-mounted motors, and friction tire motors. Generally, such an electric motor driven by the motor has a reduced overall weight, and the motor efficiency is lower than that of the hub. In the case of the same battery energy, the vehicle using these motors will generally be reduced by 5%-10% compared to the wheel-type vehicle.