Battery module, battery pack, apparatus and failure treatment method

A battery pack, comprising:

• a case;
• and
• a battery module housed in the case, the battery module comprising:
• a plurality of battery cells connected in series and comprising a failed battery cell and at least one non-failed battery cell adjacent to the failed battery cell, wherein each one of the battery cells comprises two electrode terminals and an enclosure;
• and
• a first connecting piece, wherein the first connecting piece comprises a first connecting portion and a conductive portion connected to the first connecting portion, the first connecting portion is electrically connected to the enclosure of the failed battery cell, and the conductive portion of the first connecting pieces is electrically connected to one of the two electrode terminals of the at least one non-failed battery cell, so as to restore the battery module to work,
• wherein the failed battery cell is short-circuited in the plurality of battery cells,
• wherein the plurality of battery cells further comprises two adjacent non-failed battery cells, and the battery module further comprises a second connecting piece connecting the two adjacent non-failed battery cells, and the second connecting piece is not in contact with the enclosures of the two non-failed battery cells;
• and
• the second connecting piece comprises:
• two conductive portions, wherein each one of the two conductive portions is connected to one of the two electrode terminals of each one of the two adjacent non-failed battery cells;
• a connecting portion connecting the two conductive portions,
• a bending guide portion in each one of the two conductive portions, the bending guide portion is configured to guide the second connecting piece to bend and form a connecting portion configured to be electrically connected to the enclosure of one of the two adjacent non-failed battery cells when the one of the two adjacent non-failed battery cells becomes a failed battery cell.