Canned motor pump and fuel cell comprising the same

A canned motor pump, comprising:

• a pump housing assembly, the pump housing assembly comprising a volute and a cover plate;
• an impeller;
• and
• a motor, the motor comprising a motor housing assembly, a stator assembly, a rotor assembly, and a rotating shaft;
• wherein:
• the motor housing assembly comprises a front end cover, a casing sleeve, and a rear end cover;
• the front end cover and the rear end cover are respectively mounted at two ends of the casing sleeve;
• the stator assembly is fitted on an inner wall of the casing sleeve;
• the rotor assembly is fitted inside the stator assembly;
• the cover plate is disposed on the front end cover;
• the volute is disposed on the cover plate to form a cavity;
• the volute comprises a water inlet and a water outlet, both communicating with the cavity;
• the impeller is disposed inside the cavity and connected to an extended end of the rotating shaft;
• the casing sleeve comprises a metal material;
• a capacitor box is disposed on an outer sidewall of the casing sleeve near the front end cover;
• the capacitor box defines an accommodating cavity therein;
• a capacitor assembly is disposed in the accommodating cavity;
• an opening is disposed at a top end of the capacitor box, and the opening communicates with the accommodating cavity;
• the front end cover comprises a metal inner cover and a plastic outer cover;
• the plastic outer cover is located between the cover plate and the metal inner cover;
• the plastic outer cover is used to cover the opening of the capacitor box;
• two pins are led out from the capacitor assembly;
• one pin is electrically connected to the casing sleeve, and the other pin is electrically connected to the metal inner cover of the front end cover.