Types of electric bicycle accessories,there are four main types of electric bike accessories: battery, motor, solid frame and spokes, and brake.
Battery
The battery pack of an electric bicycle is very large and is usually mounted on the frame between the wheels.
Electric motor
In the theoretical electric bicycle we considered above, we let the generator/motor directly drive the rear wheel, and simply press the tire. Most electric bicycles work differently. They are equipped with compact motors in the hub of the rear wheel or front wheel (or installed in the center of the bicycle and connected with the pedal sprocket). Look at the wheel hub of an electric bicycle. You may find that it is fatter and heavier than an ordinary bicycle. You can read more about how these motors work in our main article about hub motors.
frame
The electric bicycle accessory- frame must also be slightly different.. The main part of the frame (the electric bicycle accessory that supports your weight) is usually made of light aluminum alloy: the lighter the frame is, the lighter the overall weight of the bike is. Before you need to charge the battery, it can go farther. The spokes on the wheels must also be stronger than the slender spokes on traditional bicycles. This is because the electric motor in the wheel hub rotates the wheel with great rotational force (called torque). If the spokes are ordinary light spokes, they may bend or bend.
brake
Some electric bicycles claim to use a clever method called regenerative braking. If you start riding a bike or going downhill, the spinning wheel will turn the electric motor in the wheel hub in turn and start charging the battery. In practice, regenerative braking is far less useful on electric bicycles than on electric trains or cars. The mass and speed of an electric bicycle are much smaller than those of a train or a car, so when it starts and stops, it will never gain (or lose) the same amount of kinetic energy. You have to climb many mountains to fully charge the battery, which is usually unrealistic.
