Patent ID: 11967842
Assignee: THE BOEING COMPANY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC H

Claim 0:
1. A battery system comprising:
positive and negative busbars;
a battery pack comprising a first battery string that includes first and second half-strings;
a first string contactor connected to the positive busbar and to the first half-string;
a first mid-point disconnect circuit connected to the first and second half-strings;
a first mid-point current sensor configured to measure current flowing through the first mid-point disconnect circuit; and
a first smart mid-point disconnect unit configured to open the first mid-point disconnect circuit following receipt of an output from the first mid-point current sensor indicating over-current flowing through the first mid-point disconnect circuit,
wherein the first smart mid-point disconnect unit is further configured to open the first string contactor after opening the first mid-point disconnect circuit.