BATTERY DEVICE AND BATTERY MANAGEMENT SYSTEM

A battery device comprises a case, a core pack, a signal unit and a non-volatile memory, wherein the core pack, the signal unit and the non-volatile memory are disposed in the case. The case has a first transmission terminal and a second transmission terminal. The signal unit is electrically connected to the core pack and the first transmission terminal, and is configured to output a voltage signal associated with the state of the core pack through the first transmission terminal. The non-volatile memory is electrically connected to the second transmission terminal, and is configured to receive and store information associate with the core pack through the second transmission terminal.