| 摘要 |
PURPOSE: A battery pack and a control method of the same are provided to block a leakage current from a battery cell to a DC/DC converter, thereby preventing battery consumption. CONSTITUTION: A battery pack(200) includes a battery cell(210), a DC/DC converter(220), a control unit(230), an over-discharge switch(240), a voltage sensing unit(250), and an input power switch(260). The voltage sensing unit consists of two resistances such as R1 and R2 and turns on the input power switch in case a voltage applied in the R2 from a battery pack voltage(Vp) is higher than a predetermined voltage. In case the battery pack voltage is lower than the predetermined voltage, the input power switch maintains an off state. Although the battery pack voltage or a charging voltage is applied to charge the battery cell after over-discharge of the battery cell, a leakage current from the battery cell to the DC/DC converter is blocked. In case the charging voltage or the battery pack voltage of the battery pack is higher than the predetermined voltage, power is stably supplied to the control unit of the battery pack by supplying power to the DC/DC converter. [Reference numerals] (220) DC/DC converter; (230) Control unit |
