Charge-discharge control circuit, charge-discharge control device, and battery device

Abstract

When multiple protection ICs are cascade connected, circuit scale is suppressed. A battery device (10) includes a battery (11); a first predetermined state detection part that detects a first predetermined state regarding a first cell; a first logic circuit that performs first control based on a detection result of the first predetermined state detection part; a second predetermined state detection part that detects a second predetermined state regarding a second cell (111B); a charger connection detection part that detects presence or absence of connection between the battery (11) and a charger; and a second logic circuit (62B) that performs second control based on a detection result of the second predetermined state detection part, a detection result of the charger connection detection part, and a first notification from the first logic circuit regarding the first predetermined state. The first predetermined state and the second predetermined state are an over-charge state or an over-discharge state, and the second logic circuit (62B) masks the first notification from the first logic circuit and performs the second control in response to the detection result of the charger connection detection part satisfying a predetermined condition.