POWER STORAGE APPARATUS

摘要

PURPOSE: A power storage system is provided to prevent load to be aggravated to a battery rack due to unevenness of a current and internal resistance by uniformly sharing the load to a plurality of battery racks. CONSTITUTION: A first battery rack(200-1) is connected on a first distance from an output terminal of a main power line. A second battery rack(200-2) is connected on a second distance from the output terminal of the main power line. A load resistance is connected between the second battery rack and the main power line. The load resistance comprises a resistance value controlling the impedance difference of the first battery rack and the second battery rack according to difference of the first distance and the second distance. The first battery rack and the second battery rack are connected to the main power line in a row.