The utility model provides an electric pile is filled in energy storage of low -cost electric automobile electric wire netting low ebb, relates to electric vehicle charging technical field. Power module group including main switch, output contactor, group battery, charge interface and the control unit, the input of compatible AC and DC, main switch, power module group, export the contactor and charge the interface and establish ties in proper order, the port that charges of group battery passes through the battery charging switch and connects the output in power module group, and the output of group battery passes through the input that power module group is connected to the battery output switch, the control unit's signal input part connects the group battery, the control unit's signal output part connects main switch, output contactor, battery charging switch, battery output switch respectively. The utility model discloses utilize and fill electric pile idle time night and charge the energy storage for the battery and charge for charging pile for electric automobile's utilization ratio improves by a wide margin, and the resource obtains more effective more reasonable utilization.