| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery pack in which a plurality of secondary batteries are connected in parallel with high capacity and with high output characteristics.SOLUTION: Pack batteries 1, 2 are formed by connecting a protection circuit 30 and a connector 31 to a battery group in which a battery group 10 including a plurality of (3) batteries A connected in series and a battery group 20 including a plurality of (3) batteries B connected in series are aligned and connected in parallel. Both of the battery A and the battery B are lithium-ion batteries of the same size, but the battery A has a power-generating body with a high average operation voltage and a low internal resistance, compared to the battery B. |
