With the development of the economy, rural electricity consumption rises year by year However, due to the load dispersion of rural distribution networks and the long distance of power supply, the voltage quality problems exist at the end of rural distribution networks. Especially for rural distribution networks in remote areas, the inconvenient transportation leads to the difficulty of accessing the large-scale energy storage devices to provide reliable voltage support for the users. A feasible way to solve the voltage quality problems of the distribution networks in such areas is to connect small movable household energy storage devices to the grid. In this paper, a distribution network voltage management method is proposed based on the mobile battery energy storage equipment with bidirectional LLC and single-phase grid-connected inverter. The method first calculates the current power deficit of the distribution grid to obtain the grid voltage and storage battery SOC values. The obtained power deficit and voltage magnitude are used to determine whether the grid is in an over-voltage or under-voltage state. Combined with the grid voltage and the battery SOC value, the charging or discharging of the battery is executed to carry out the bidirectional flow of power, and finally realize the voltage management of the distribution network. At the end, this paper shows the simulation experiment results that verify the effectiveness of the voltage management method.