Ford global technologies, llc (20250085326). VEHICLE KEY-OFF LOAD MONITORING
VEHICLE KEY-OFF LOAD MONITORING
Organization Name
Inventor(s)
Reagan P. Zimmerman of Bloomfield Hills MI (US)
Craig E. Esler of Plymouth MI (US)
Shormin Razzaq Chowdhury of Northville MI (US)
VEHICLE KEY-OFF LOAD MONITORING
This abstract first appeared for US patent application 20250085326 titled 'VEHICLE KEY-OFF LOAD MONITORING
Original Abstract Submitted
current limits are set for detecting anomalous current drain of a battery in an electrical system during a key-off state of a vehicle. a plurality of test vehicles are selected which are operational without any anomalous current drain. a plurality of time intervals are identified according to a plurality of predetermined key-off-load (kol) modes which are activated successively after initiation of the key-off state. key-off interval currents are measured during each of the time intervals in each of the test vehicles. a respective average current of the interval currents is determined in each respective time interval. a respective standard-deviation current of the interval currents is determined in each respective time interval. a respective current limit is set corresponding to each time interval according to the respective average current plus a respective incremental value determined according to the respective standard-deviation current.
