Charge/discharge control circuit, charge/discharge control device, battery device, and battery system

Abstract

A charge/discharge control circuit includes a control circuit configured to transition to a control state corresponding to a detection result of an abnormal state and perform open/close control of a charge/discharge path of one or a plurality of secondary batteries being a control target in accordance with the control state. The charge/discharge control circuit is connected in parallel to an external terminal provided in the charge/discharge path, and is configured to transmit and receive a detection result signal including the detection result to and from another charge/discharge control circuit having, as a control target, one or a plurality of secondary batteries different from the one or the plurality of secondary batteries of an own circuit, to thereby share the control state of the own circuit and the control state of the another charge/discharge control circuit.

Dependencies are inferred from the claim text.