The utility model discloses a
battery pack with a charging function, and relates to the technical field of batteries. The
battery pack comprises a shell, a BMS
assembly, a BDU
assembly, battery cells and a charging circuit, the charging circuit comprises a charging main circuit and a plurality of charging
branch circuits, the shell is provided with a charging
external connection end, the charging main circuit is connected to the charging
external connection end, the charging
branch circuits are connected to the charging main circuit in parallel, each charging
branch circuit is connected with the corresponding
battery cell, and the battery cells are connected to the charging main circuit. Each
electricity supplementing
branch line is provided with a branch switch used for controlling on-off of the
branch line. And the selection controller is electrically connected with the plurality of branch switches, and the selection controller is also electrically connected with the BDU
assembly. According to the
battery pack with the charging function, the independent charging circuit is arranged in the battery pack, so that the low-
voltage battery core in the battery pack can be independently charged through the charging circuit, and the
voltage difference of the battery pack during charging and discharging is reduced.