Abstract: The disclosure provides a charging and discharging method for a cleaning device, and a cleaning system. The charging and discharging method for a cleaning device includes: operating in a self-cleaning mode to clean a self-cleaning object of the cleaning device; and supplying at least part of a current from a charging power supply to a workload in the self-cleaning mode. In the solution according to the disclosure, the at least part of the current from the charging power supply is supplied to the workload in the self-cleaning mode, thus reducing the power consumption of a battery in the self-cleaning mode and prolonging the overall battery life of the battery.

Abstract: A cleaning system includes a cleaning device, a tray, a charging assembly, a body and a floor brush assembly. The floor brush assembly has rollers which rotate around an X-axis, and can rotate at least in the X-axis direction relative to the body. The charging assembly has a male charging end and a female charging end, wherein one of the male charging end and the female charging end is provided on the body, and the other is provided on the tray. Opposite sides of the male charging end have first electrode sheets and the female charging end has corresponding second electrode sheets. The body of the cleaning system, the body rotates such that the location of the first electrode sheets of the male charging end avoid a problem of poor contact with second electrode sheets of the female charging end.