The basic structure of the electric vehicle

Power Supply of the electric vehicles
It provides electric energy for the driving motor of electric vehicle, and the motor converts the electric energy of the power supply into mechanical energy. The most widely used power supply is lead-acid battery, but with the development of electric vehicle technology, lead-acid battery is gradually replaced by other batteries because of its low energy, slow charging speed and short service life. The developing power sources mainly include sodium sulfur battery, nickel cadmium battery, lithium battery, fuel cell, etc. the application of these new power sources has opened up broad prospects for the development of electric vehicles.

Drive motor of the electric vehicles
The function of the driving motor is to convert the electric energy of the power supply into mechanical energy and directly drive the wheel and working device through the transmission device or. However, due to the commutation spark of DC motor, the power is small, the efficiency is low, and the maintenance workload is large; With the development of motor control technology, it is bound to be gradually replaced by brushless DC motor (BLDCM), switched reluctance motor (SRM) and AC asynchronous motor, such as shell less disc axial field DC series excitation motor.