The invention discloses a
new energy automobile electronic water pump and a
control system and method. An upper shell, a middle shell and a lower shell which are detachable in a sealed manner are arranged. The upper shell and the middle shell are internally provided with
ceramic rotor center shafts, a fixed cover cap and an upper shaft seat are arranged at the upper end, the lower end is fixed to the middle shell, a rotating
ceramic shaft sleeve is arranged on the periphery, and the
ceramic shaft sleeve, an
impeller body and an
impeller cover are manufactured into a whole; a rotor is formed by a
ferrite magnet and a steel plate which are integrated, and is fixed to the lower plane of the
impeller body; a
stator and a control part are arranged in the middle shell and the lower shell; a motor driver formed by an MOS tube, a single-
chip microcomputer, a fault detection part, a communication module connected with an automobile water pump controller and the like are arranged; and a starting and malfunction interrupt service and
sine wave control method is provided; and the problems that a
brush motor is high in
energy consumption and low in efficiency are solved,
structural water prevention is good, the pump is small and light and convenient to maintain, due to the cover cap, the water
noise is low, and sine
waves are used for driving. During running, no torque pulsation exists, the
noise is low, the control method is simple and accurate, faults of temperature,
voltage, current, idling, rotation blockage and the like are monitored and overcome in real time, and the aim that the water pump can still run at the higher temperature is achieved.