Battery Overcharge Preventing Device

摘要

Provided is a battery overcharge preventing device. The battery overcharge preventing device may sense an over-voltage using a voltage of a battery cell as input power of a passive element and cut off power supplied to a battery at the time of overcharge of the battery.

主权项

1. An overcharge preventing device comprising:
an input voltage dividing unit connected across at least one battery cell in a battery pack including a plurality of battery cells and dividing a voltage of the battery cell; a voltage sensing unit connected to the input voltage dividing unit and operated when it is sensed that a voltage input through the input voltage dividing unit is a predetermined voltage or more; and a power cut-off unit connected to the voltage sensing unit and turning on or turning off an internal switch by the operation of the voltage sensing unit to cut off power supplied to the battery pack.