An electric bicycle, also known as an electric power-assisted bicycle or e-bike, is a form of transportation that combines traditional bicycles with electric technology. It is powered by batteries and equipped with an electric drive system to assist riding or completely replace human power. It should be noted that when using electric bicycles, you need to abide by traffic laws and safe operating practices, protect your own safety and respect other road users.

Electric bikes are similar in design to traditional bicycles but have an electric drive system integrated into the rear wheel. Frames, wheels, and other components come in a variety of styles and materials to suit different riding needs.

Electric drive system: The electric drive system of an electric bicycle consists of a battery, an electric motor and a controller. The battery is usually installed on the upper part of the frame or under the rear seat tube and can provide power to the electric motor. The electric motor is connected to the rear wheel via a chain or gears and drives the wheel movement.

Handling and control systems: Electric bikes handle like traditional bikes. The control system includes controls such as throttle, brake and gear on the handlebars. Some models may be equipped with a display to provide driving information and adjust settings.

Power-assisted mode: Electric bicycles usually have two working modes: power-assisted mode and pure electric mode. In the power-assist mode, the electric motor provides auxiliary power according to the rider's pedaling force, making riding easier and less labor-intensive. In pure electric mode, the electric motor completely replaces human power, and the rider can move forward without pedaling.

The performance parameters of an e-bike are affected by factors such as motor power, battery capacity and riding conditions. Maximum speed, cruising range and climbing ability are common performance indicators, which vary among different models and configurations of electric bicycles.

Charging and battery life: The battery of an e-bike needs to be charged regularly. The charging time depends on the battery capacity and the power of the charging device, and generally takes several hours to more than ten hours. Range varies based on battery capacity and riding conditions, but can generally range from 30 to 100 miles (48 to 160 kilometers).

Environmental protection: Electric bicycles are a clean, low-carbon travel tool. Compared with other means of transportation such as cars, they have no exhaust emissions and cause less environmental pollution.

Usage scenarios: Electric bicycles are suitable for urban commuting, short-distance travel and leisure riding. They can reduce the physical burden on riders, reduce reliance on public transportation, and be more flexible and convenient in traffic-congested cities.