Patent ID: 9142983
Filing Date: 2015-09-22
Classification: H01M,H02J,Y02E

Abstract:
1. A battery protection IC for monitoring a voltage and a current of a secondary battery to control charge/discharge of the secondary battery, the battery protection IC comprising: a VDD terminal and a VSS terminal to be connected to the secondary battery; an overcurrent detection terminal to be connected to an external terminal; a charge control terminal to be connected to a charge control FET for controlling a charge current of a charger for charging the secondary battery; and a first switch element provided in a current path that exists between the overcurrent detection terminal and the VDD terminal, the first switch comprising a first node and a second node, wherein when the first switch is in an on state, current flows between the first node and the second node, wherein, when the charger is connected with reverse polarity, the first switch element switches to an off state and blocks current flow between the first node and the second node, which thereby blocks current flow into the overcurrent detection terminal and out through the VDD terminal.