| 摘要 |
A secondary battery capable of ensuring operator safety by checking whether a service plug is opened or closed. The secondary battery includes a battery pack having a plurality of battery cells, a service plug coupled between each of the plurality of battery cells through a pair of plug terminals for controlling interconnection of the plurality of battery cells according to whether the pair of plug terminals contact the battery cells, and a battery management system connected to the battery pack and the service plug for determining whether the service plug is opened or closed by measuring at least one selected from the group consisting of a voltage and a current of the battery pack and voltages of the plurality of battery cells connected to the service plug. |
