a wake-up unit configured to generate and send a wake-up signal;

a first power supply path between the battery cell and the wake-up unit, the first power supply path being configured to supply a first operating power from the battery cell to the wake-up unit;

a first regulator on the first power supply path, the first regulator being configured to adjust a voltage magnitude of the first operating power supplied from the battery cell to a voltage magnitude available by the wake-up unit;

a first switching element on the first power supply path, the first switching element being configured to turn on or off the flow of the first operating power on the first power supply path;

a feedback module configured to supply an on/off signal from the first regulator to the first switching element; and

a microcontroller unit configured to convert a sleep mode to a wake-up mode by receiving the wake-up signal from the wake-up unit, the microcontroller unit being connected to the feedback module to turn off the first switching element.