SOFT PACKAGE BATTERY MODULE AND DEVICE OF WHICH BATTERY PACK USES SOFT PACKAGE BATTERY MODULE

This application discloses a soft-pack battery module, a battery pack, and a device using a soft-pack battery module. The soft-pack battery module includes at least two battery stack layers stacked in a thickness direction of battery cells, where each battery stack layer includes a battery cell and a connecting piece connected to a tab of the battery cell, the connecting piece includes a first split body and a second split body, the first split body is connected to the tab, the second split body is connected to the first split body, the second split body is arranged by a side of the first split body, the second split body extends toward a large surface of the battery cell and covers at least a part of the large surface of the battery cell, and an insulating material is provided on a side of the second split body away from the large surface of the battery cell. The second split body of the soft-pack battery module in this application covers at least a part of the large surface of the battery cell so as to enhance overall strength of the soft-pack battery module.