Battery module and manufacturing method therefor

A battery module, comprising:

• a pair of cylindrical battery cells, each battery cell comprising a positive electrode terminal and a negative electrode terminal which face different directions, and the battery cells being arranged to be in close contact with or adjacent to each other;
• a pair of PTC elements provided at one end of the pair of battery cells, a first PTC element of the pair of PTC elements being provided to the positive electrode terminal at the one end of the pair of cylindrical battery cells and a second PTC element of the pair of PTC elements being provided to the negative electrode terminal at the one end of the pair of cylindrical battery cells;
• a connection member configured to electrically connect the positive electrode terminal and the negative electrode terminal which are at an opposite end of the pair of cylindrical battery cells from the one end of the pair of cylindrical battery cells;
• a connector having a structure in which four wires are connected to a single connection terminal and is configured to electrically connect an external system and the pair of cylindrical battery cells via the connection terminal, the connector including a thermistor;
• and
• a coupling valley provided in a region in which the pair of cylindrical battery cells are arranged to be in close contact with or adjacent to each other,
• wherein the pair of PTC elements and the four wires extend in the coupling valley.