| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery pack and a power supply device equipped with the same capable of stably supplying power to a load.SOLUTION: A power supply device comprises: a power supply circuit 10 configured to receive a first power from an external power source, to receive a battery power, and to output a second power including at least one of the first power and the battery power to an external load; and a battery pack 14 coupled to the power supply circuit 10, the battery pack 14 comprising a plurality of batteries 15 which are arranged into a plurality of battery groups including a first battery group 15-1 and a second battery group 15-2 and being configured to supply the battery power. The battery pack 14 is configured to selectively supply a power of the first battery group 15-1 or a power of the second battery group 15-2 as the battery power to the power supply circuit 10 according to at least one of a status of the external power source, a status of the external load, a status of the first battery group 15-1, and a status of the second battery group 15-2. |
