An electrically powered pump includes a housing having a plurality of coils disposed in a circumferential direction of the housing, and an outer rotor rotatably disposed on an inner circumferential side of the housing and having a plurality of permanent magnets. The pump further includes an inner rotor disposed on an inner circumferential side of the outer rotor so as to be rotatable about a rotation axis eccentric relative to a central axis of the outer rotor. The inner rotor has a plurality of slots extending in a radial direction of the inner rotor, and a plurality of connection plates each having an outer radial end portion pivotably supported on an inner circumferential portion of the outer rotor and an inner radial end portion slidably received in the respective slots. The connection plates divide a space formed between the outer and inner rotors into a plurality of chambers.