Patent ID: 7807288

Claim:
A battery cartridge-connecting system for battery modules, comprising: bus bars, which are members for electrically connecting battery cartridges, each of the bus bars including a plate-shaped bar body constructed to be in surface contact with electrode terminals of a battery, a coupling part formed by bending at least a portion of each end of the plate-shaped bar body, and an electrical connection part formed by bending at least a portion of each end of the plate-shaped bar body, wherein each of the coupling parts is provided with a coupling groove, in which a corresponding coupling member formed at a base plate is engaged, and the electrical connection parts are formed in the shape of a protrusion, which can be securely inserted into a corresponding part of a printed circuit board (PCB); the base plate, which is a member for allowing the plurality of bus bars to be attached thereto, the base plate including a plurality of openings, into which the bus bars are securely inserted, the coupling members being formed at the openings such that the coupling members are engaged in the coupling grooves of the bus bars; and the printed circuit board (PCB), which is a member electrically connected to the plurality of bus bars, the printed circuit board (PCB) having connection holes, through which the protruding electrical connection parts of the bus bars are securely inserted, wherein the connection holes of the printed circuit board (PCB) are formed through protrusions formed at sides of the printed circuit board (PCB).