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

Claim 4:
5. The battery system as recited in claim 2, wherein the battery pack further comprises a second battery string that includes third and fourth half-strings, the system further comprising:
a third string contactor connected to the positive busbar and to the third half-string;
a fourth string contactor connected to the negative busbar and to the fourth half-string;
a second mid-point disconnect circuit connected to the third and fourth half-strings;
a second mid-point current sensor configured to measure current flowing through the second mid-point disconnect circuit; and
a second smart mid-point disconnect unit configured to open the second mid-point disconnect circuit and the third string contactor in response to receipt of an output from the second mid-point current sensor indicating over-current flowing through the second mid-point disconnect circuit.