| 摘要 |
PROBLEM TO BE SOLVED: To prevent improper connection structurally when a plurality of batteries are connected.SOLUTION: The battery pack is configured by electrically connecting the terminals of a plurality of electric cells 2 each having a negative electrode terminal 6 and a positive electrode terminal 5 projecting from the battery housing 4 by using bus bars 3. External shape of the positive electrode terminal 5 is different from that of the negative electrode terminal 6. The bus bar 3 has a positive electrode fitting part 32a corresponding to the external shape of the positive electrode terminal 5, and a negative electrode fitting part 32b corresponding to the external shape of the negative electrode terminal 6. |
