US 12,469,888 B1
Battery control system that automatically electrically isolates battery voltage from battery output connector
Brandon Bascetta, Lynn Haven, FL (US); Jason Scott, Chipley, FL (US); Michael Kirke, Panama City, FL (US); James Mcginley, Lynn Haven, FL (US); Jonathan Outlaw, Lynn Haven, FL (US); and Mike Hodges, Panama City, FL (US)
Assigned to The United States of America as represented by the Secretary of the Navy
Filed by United States of America as represented by the Secretary of the Navy, Arlington, VA (US)
Filed on Sep. 30, 2022, as Appl. No. 17/956,926.
Int. Cl. H01M 10/46 (2006.01); G01R 33/07 (2006.01); H01M 10/42 (2006.01); H01M 10/44 (2006.01); H02J 7/00 (2006.01)
CPC H01M 10/425 (2013.01) [G01R 33/07 (2013.01); H01M 10/441 (2013.01); H02J 7/0063 (2013.01); H02J 7/007 (2013.01); H01M 2010/4271 (2013.01)] 18 Claims
OG exemplary drawing
 
11. A battery control system for a battery having at least one battery cell that provides a battery voltage and a battery output connector for providing the battery voltage to a load, comprising:
a battery management circuit comprising:
battery cell switch circuitry comprising at least one switch circuit coupled between the at least one battery cell and configurable to a first state in which the switch circuit couples the battery cell to the battery output connector and to a second state in which the switch circuit electrically isolates the battery cell from the battery output connector, and
an interface circuit configured to receive a control signal and in response, generate a signal that configures the switch circuit to either the first state or the second state;
a magnetic field generating device configured to be attached to an external electrical connector that is configured to be connected to the battery output connector;
a sensor for providing a detection signal that indicates whether or not a magnetic field is present;
a synchronous serial communication bus in electronic signal communication with the interface circuit of the battery management circuit; and
a processing element in electronic signal communication with the synchronous serial communication bus and the sensor and configured to receive the detection signal from the sensor and, in response, output the control signal to the interface circuit via the synchronous serial communication bus to prompt the interface circuit to output a signal that configures the switch circuit to the first state if the detection signal indicates the presence of a magnetic field and to the second state if the detection signal indicates no magnetic field is present;
whereby, when the external electrical connector with the magnetic field generating device attached thereto is connected to the battery output connector, the sensor detects a magnetic field generated by the magnetic field generating device and outputs the detection signal indicating the presence of the magnetic field, and whereby when the external electrical connector with the magnetic field generating device attached thereto is disconnected from the battery output connector, the sensor outputs a detection signal indicating the magnetic field is no longer present.