Abstract: A performance analysis method of an energy storage system and a related device are disclosed in the present application, the method includes: processing at least one data file of charging and discharging of the energy storage system to obtain target charging and discharging data; and determining a start node and an end node in a charging and discharging cycle of the energy storage system according to the charging and discharging cycle data of the energy storage object(s) in the target charging and discharging data, thereby accurately analyzing the performance of the energy storage system to avoid misreading or omission and increase the efficiency of processing the charging and discharging data.

Abstract: An electric toothbrush (100), comprising a brush handle (10) and a brush head (20), the brush handle (20) comprises an electromotor (21), a transmission assembly (22) and a transmission rod (23), the transmission assembly (22) comprises a main body (221), a gear (222), a connecting arm (223) and a positioning member (224), the electromotor (21) has a rotor engaged with the gear (222), the gear (222) is arranged with a connecting rod (225), which has an end fixed at an eccentric position of the gear (222) and another end arranged on the main body (221), wherein the connecting arm (223) has an end arranged on the connecting rod (225) and another end arranged on the positioning member (224), and the transmission rod (23) has an end running through the positioning member (224) and the main body (221) and extending to the brush head (10).