The composition of electric scooter

Taking a domestic electric scooter as an example, there are more than 20 parts and components in the whole e-scooter, and there is a motor control system motherboard inside the e-scooter body.

The motor of the electric scooter generally uses hundreds of watts of brushless DC motor or permanent magnet synchronous motor and cooperates with a special controller, and the brake control generally adopts cast iron or composite steel; lithium batteries have various capacities, which can be customized according to their actual needs. Choose, if there is a certain requirement for speed, try to choose a battery with a capacity of more than 48V; if there is a requirement for the cruising range, you can choose a battery with a capacity of more than 10Ah.

The body structure of the electric scooter must have a bearing capacity of at least 100 kilograms to ensure that the scooter is strong enough to withstand the test on the bumpy road. At present, the most commonly used material for electric scooters is aluminum alloy, which is not only relatively light in weight, but also excellent in firmness.

The instrument panel can display the current speed and mileage and other information, generally choose a capacitive touch screen; tires generally have two types of tubeless tires and air tires, tubeless tires are relatively expensive; the frame is generally made of aluminum alloy.

Electric scooters also have some attention to their structural design. In the hardware part, the interface used is generally a multi-interface gold finger plug, which is convenient for the stability and reliability of the electrical connection.

In the control system board, the MCU is arranged in the middle of the circuit board, and the gate drive circuit is arranged a little farther away from the MCU. When designing, it is necessary to pay attention to the heat dissipation of the gate drive circuit. Screw terminal power connectors are provided on the power strip for high current interconnection via copper terminal strips. For each phase output, two copper strips form the DC bus connection, connecting all parallel half bridges for that phase to the capacitor bank and DC power supply. Another copper strip connects the output of the half bridge in parallel.