Patent ID: 11949258
Assignee: MITSUMI ELECTRIC CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 9:
10. An integrated circuit for secondary battery protection, comprising:
a plurality of power paths each electrically coupled in series with a corresponding secondary battery cells among a plurality of secondary battery cells electrically coupled in series;
at least one switching element inserted in a given power path;
one or more control circuits configured to control the at least one switching element such that the plurality of secondary battery cells are protected;
an anomaly detecting circuit configured to detect an anomaly of the secondary battery cells;
one or more monitoring terminals each provided in a path different from the power paths, each monitoring terminal being operable for monitoring a potential at a negative electrode of a given secondary battery cell among the plurality of the secondary battery cells;
one or more internal lines, each internal line being between the negative electrode of the given secondary battery cell and a given monitoring terminal; and
one or more internal switches, each internal switch being provided in a given internal line and configured to be turned on or off based on a result of anomaly detection performed by the anomaly detecting circuit,
wherein the one or more monitoring terminals are configured to output respective monitored potentials, upon occurrence of a condition in which an external device adjusts, based on the potentials monitored by the one or more monitoring terminals, a current flowing into a line path that includes a corresponding internal line among the one or more internal lines, in conjunction with a condition in which the external device controls balance among the cell voltages for the plurality of the secondary battery cells, based on the adjusted current.