Secondary battery pack having battery cells mounted in cartridge frame

A secondary battery pack comprising:

• a battery cell array configured to have a structure in which two or more battery cells, each of which comprises electrode terminals formed at one side thereof and a thermally bonded surplus portion formed at the side thereof at which the electrode terminals are formed, are arranged side by side;
• a protection circuit module (PCM) configured to have a structure including a protection circuit board (PCB) having a protection circuit formed thereon, an external input and output terminal connected to the protection circuit of the PCB, and a PCM case, in which the PCB is mounted, the PCM being loaded on the thermally bonded surplus portions of the battery cells in a state in which the PCM is electrically connected to the battery cells;
• a cartridge frame comprising two or more battery cell location parts for fixing the two battery cells, respectively, each of the battery cell location parts being formed in a frame shape corresponding to an outer circumference of a corresponding one of the battery cells;
• and
• a single sheathing label attached to the cartridge frame such that the sheathing label wraps around ends of the cartridge frame in a state in which the battery cells, to which the PCM is connected, are fixed in the cartridge frame,
• wherein the PCM mounted at the thermally bonded surplus portions of the battery cells is securely fixed to the thermally bonded surplus portions of the battery cells by hot melting to cover a surface of the PCM opposite a surface adjacent to the thermally bonded surplus portion.