Electrolysis device and system for prime mover

The invention discloses an electrolysis device and system for a prime mover. The electrolysis device for the prime mover comprises a rotatable magnetic circuit, an annular electrolytic tank and a transmission part in transmission connection with the prime mover. The annular electrolytic tank is used for storing electrolyte; the rotatable magnetic circuit comprises a cylindrical magnet and one or more pairs of pole shoes which are fixedly connected to the upper end and the lower end of the magnet respectively; the annular electrolytic tank further comprises an electrolytic product output pipeline and an electrolyte supplementing pipeline; the magnet is arranged in an annular hole enclosed by the annular electrolytic tank, and the pair of pole shoes are respectively positioned on the upper surface and the lower surface of the annular electrolytic tank; the transmission part is driven by a prime motor to drive the rotatable magnetic circuit to rotate; rotation of the rotatable magnetic circuit generates an induc