The utility model relates to a two quick systems of filling of electric automobile direct current of power automatic allocation, the power unit who is used for the ACDC conversion including a plurality of to and two at least dc buss, the stake of charging of a correspondence is connected to every dc bus, power unit divide into two sets ofly at least, and in every group, each power unit's direct current side all corresponds and connects a dc bus, and each dc bus is do not connected to each component, article two, be equipped with the direct current contactor who is used for connecting, breaking off two dc buss between the dc bus. Owing to only set up " the female antithetical couplet " contactor between the dc bus to saved a large amount of original contactors that set up between generating line and each power unit, thereby simplified the wiring structure greatly, and make and control also more portably, reached charge efficiency and utilized maximize, the switching frequency is minimum and the complete machine is longe -lived effect.