Pure-electric digger and control method thereof

The invention provides a pure-electric digger and a control method thereof and belongs to the technical field of control over diggers. The pure-electric digger comprises a hydraulic system, a reversing valve, a motor assembly and a controller. An input end of the hydraulic system is connected with an output end of the motor assembly, an output end of the hydraulic system is connected with an inputend of the controller and an input end of the reversing valve separately, and an output end of the controller is connected with an input end of the reversing valve. An output end of the reserving valve is electrically connected with an input end of the motor assembly. The controller is used for receiving pressure information sent by the hydraulic system and controlling the reversing valve to be switched on or switched off according to the pressure information, and when the reserving valve is switched off, the hydraulic system provides power for an execution mechanism of the digger. When the reserving valve is switche