Electrified vehicle electrical distribution system component protection systems and methods
AssigneeFord Global Technologies, LLC
InventorsShehan Haputhanthri, Seth Anthony Bryan, Joseph Gerald Supina, Shunsuke Okubo
Life of this patent
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Abstract
A vehicle includes an electrified propulsion system powered by a traction battery over an electrical distribution system (EDS) and a controller programmed to monitor at least one of a current flow and a temperature at a plurality of locations throughout the EDS. The controller is also programmed to implement at least one mitigation action over a predetermined time window in response to detecting a filtered current value exceeding a threshold.
Claims20
A vehicle comprising:
- an electrified propulsion system powered by a traction battery over an electrical distribution system (EDS);
- and
- a controller programmed to implement at least one mitigation action over a predetermined time window in response to detecting a filtered current squared value exceeding a threshold, wherein the at least one mitigation action is selected from a set of mitigation actions corresponding to a location of the detected filtered current squared value within the EDS, the at least one mitigation action being implemented in a sequence with a predetermined time dwell between each of the mitigation actions.
A method of controlling power flow in a vehicle electrical distribution system (EDS) comprising:
- in response to a monitored current exceeding a current limit, enabling a set of mitigation actions to maintain current at a component location corresponding to the monitored current to be less than a control percentage threshold of the current limit, wherein the current limit is selected based on a current carrying capability of the EDS and the set of mitigation actions are enabled in a sequence with a predetermined time dwell between each of the mitigation actions.
A vehicle comprising:
- an electric machine powered over an electrical distribution system (EDS) in cooperation with an engine;
- and
- a controller programmed to
- cause propulsion of the vehicle using at least one of the electric machine and the engine, and
- in response to sensing at least one of a squared value of filtered current, a root mean squared (RMS) current value, a direct measurement temperature value, and a non-squared filtered current value greater than a threshold, enable at least one of a set of a plurality of mitigation actions in a sequence with a predetermined time dwell between each of the mitigation actions to reduce a power limit at a location along the EDS corresponding to the sensed value greater than the threshold.
Dependencies are inferred from the claim text.