Full DC inverter solar monoblock refrigeration unit with AC/DC universal performance (AC 220V/50Hz/60Hz or 310V DC input), the unit adopts Shanghai HIGHLY DC inverter compressor, variable frequency drive, and carel control board, carel Electronic expansion valve, carel pressure sensor, carel temperature sensor, carel liquid crystal display controller, Danfoss sight glass and other international famous brand accessories. The unit achieves energy savings of 30%-50% compared to the same power fixed frequency compressor.