Battery module having pressure sensor for detecting thermal propagation

A battery module comprising:

• a cell stack having a plurality of battery cells stacked in a first direction;
• a pressure sensor disposed between a first battery cell of the plurality of battery cells and a second battery cell of the plurality of battery cells facing the first battery cell, and having a plurality of pressure sensing nodes protruding toward the second battery cell;
• a surface pressure transmission plate disposed between the pressure sensor and the second battery cell, and having a flat surface facing the plurality of pressure sensing nodes;
• and
• a sensitivity adjusting plate formed of a compressible material and disposed between the plurality of pressure sensing nodes and the surface pressure transmission plate,
• wherein the sensitivity adjusting plate has a plurality of recesses,
• wherein the plurality of pressure sensing nodes fit into a respective one of the plurality of recesses, and
• wherein the surface pressure transmission plate has a solid interior.