Patent ID: 9401607
Filing Date: 2016-07-26
CPC Classification: H02J

Claim Text:
1. A charge and discharge control circuit for controlling charge and discharge of a secondary battery connected between a first terminal and a second terminal and having a charger reverse connection detection circuit connected to a VM terminal for detecting that a charger is reversely connected, the charge and discharge control circuit comprising: a consumption current increase circuit configured to supply a current (Ids) from the first terminal to the second terminal and comprising a switch circuit configured to turn on in response to a detection signal from the charger reverse connection detection circuit and create a current path between the first and second terminals, wherein a value of the current (Ids) satisfies a relationship: {Vbat+(Ivm−Ids)×R1}<Vmax, where (Vbat) is a voltage of the secondary battery, (Ivm) is a current flowing from the VM terminal toward the first terminal, (R1) is a resistance between the first terminal and the secondary battery, and (Vmax) is a withstand voltage between the first and second terminals.