The present disclosure provides a parallel battery module comprising a plurality of battery cells, a first current collection connector, and a second current collection connector. The plurality of battery cells are in parallel connection. Each battery cell comprises a conducting top cover plate, a first terminal, a conducting connector, a second terminal, a bare cell, a fuse, and a conducting deformable piece. The first current collection connector and the second current collection connector are disposed on the top of the plurality of battery cells, and are electrically connected to the first terminal and the second terminal of the plurality of battery cells, respectively. When the conducting deformable piece of a battery cell deforms and becomes electrically connected to the conducting connector, the electrical connection between said battery cell and other battery cells is broken by blowing the first current collection connector and/or the second current collection connector.