Ford Global Technolgoies, LLC

Matthew Roger Dedona

Mark J Ferrel

Christopher W Bell

Bo Wu

Arthur M Rutyna

Hilde Anne Heremans

William David Treharne

Louis Paspal

Joseph Carl Burba

Raymond Anthony Spiteri

Joel Beckerman

Ryan J Skaff

Christopher Adam Ochocinski

Venkateswa Anand Sankaran

Jeffery R Grimes

Debbi Callicoat

Karin Lovett

Yuan Zhang

James A Lathrop

Kevin Vander Laan

Steven F Chorian

Navid Rahbari Asr

Lila Ghannam

Thomas M Gwozdek

Changjian Hu

William Damianov

A vehicle charging system includes a charger configured to adjust an output voltage to achieve a voltage request and output a measured output voltage. The vehicle charging system further includes a controller programmed to measure a terminal voltage of a traction battery being charged and receive the measured output voltage from the charger. The controller is further programmed to output the voltage request as a sum of a full charge voltage and an estimated voltage measurement error between the measured output voltage and the terminal voltage.

Electrified vehicle measurement error compensating charge voltage request

A vehicle connected to electric vehicle supply equipment is configured to wake-up an onboard charger based on a pilot signal. A controller is configured to interrupt the pilot signal to prevent the pilot signal from subsequently waking the charger to reduce power consumed by the charger while the vehicle is connected. The interruption may be triggered by a completion of a charge cycle, an extensive charge wait interval, or a charging system condition that prevents charging. The controller may discontinue interruption of the pilot signal in response to a wake-up source other than the pilot signal.

Control pilot latch-out mechanism to reduce off-board energy consumption

Electric and plug-in hybrid vehicles connect to Electric Vehicle Supply Equipment (EVSE) to recharge a traction battery. Existing standards define the signal interface between the vehicle and EVSE including control pilot and proximity detect signals. The vehicle may use the status of these signals to detect when a connection is established with EVSE. The vehicle may indicate a connection when the signals provide conflicting statuses. The vehicle may prevent driving off and permit charging in the event of a proximity detect signal indicating a state of engagement other than connected as long as a valid control pilot signal is present. The status of the control pilot signal may be utilized to prevent drive-off and permit charging.

Detection of on-board charger connection to electric vehicle supply equipment

A vehicle includes a traction battery, an auxiliary battery, a charger, and two DC-DC converters. A first DC-DC converter is connected between the traction battery and the auxiliary battery through a main contactor. A second DC-DC converter is connected between the charger and the auxiliary battery. The charger is configured to charge the auxiliary battery via the second DC-DC converter when the charger is receiving power. The second DC-DC converter is configured to charge the auxiliary battery when the first DC-DC converter is disconnected from the traction battery. The second DC-DC converter can charge the auxiliary battery independent of the charger charging the traction battery. The second DC-DC converter may be configured to generally maximize power conversion efficiency in a range of power outputs associated with charging the auxiliary battery.

Plug-in vehicle with secondary DC-DC converter

A power management system for a vehicle having wheels and an electric machine operable to provide torque to drive at least one of the wheels includes a first energy storage system capable of supplying power to operate the electric machine. The system also includes a second energy storage system capable of supplying power directly to at least one vehicle load at a lower voltage than the first energy storage system. A voltage conversion device is operable to reduce a voltage of the power supplied by the first energy storage system to the lower voltage to charge the second energy storage system when the vehicle is in a key-off state.

System and method for vehicle power management

An electric or hybrid electric vehicle includes a battery coupled to a traction motor and a DC-DC power converter for managing transient current demands of vehicle accessories such as an electrical power assisted steering (EPAS) motor or antilock braking system (ABS) with a controller coupled to the power converter that generates a first duty cycle signal to supply current at a first level for a first time period to accommodate transient current for an EPAS, ABS, or other short duration event, and a second duty cycle signal that limits the current to a second level lower than the first level for a second time period upon expiry of the first time period to manage temperature of the converter. The controller may also generate a duty cycle signal based on measured or estimated transistor temperature of the DC-DC converter to lower the current limit when transistor temperature exceeds a threshold.

Electric vehicle with transient current management for DC-DC converter

An operation includes disabling a vehicle from moving while connection status of the vehicle with external charging infrastructure is unknown. A message is generated to advise a user to check the connection status. The vehicle is enabled to move upon a user indication that the vehicle is disconnected from the charging infrastructure.

Method and system for providing charging cord reminder and fault override for plug-in electric vehicles

A system and method for managing electrical loads in a vehicle includes a high voltage power source capable of providing electrical power to at least one high voltage load. An electrical converter is operable to receive an input of high voltage power from the high voltage power source and to provide an output of low voltage power to one or more low voltage loads. A control system is in communication with the converter, and it is configured to receive signals from the converter related to the converter output, and cut power to at least one of the low voltage loads when the signals received from the converter indicate that the high voltage power source cannot provide full power to the low voltage loads.

System and method for managing electrical loads in a vehicle

A method performed by a vehicle computing system includes detecting the triggering of a vehicle sensor indicating an abnormal vehicle condition and determining one or more likely abnormal vehicle conditions associated with the triggering of the sensor. The method also includes accessing a vehicle database to determine one or more pieces of information relating to the one or more abnormal vehicle conditions. The method further includes electronically presenting the one or more pieces of information to a vehicle user.

Method and apparatus for driver assistance

The present disclosure relates mounting assemblies for a vehicle DC-to-DC power converter. The mounting assemblies can include a bracket having a first end configured to be fastened to a DC-to-DC power converter housing and a second end configured to be fastened to a vehicle structural member. The mounting assemblies can be utilized in hybrid, fuel cell and/or electric vehicles.

Power converter mounting assemblies

A high-voltage energy regulated conversion circuit (HVERCC) () for coupling to a vehicle bus () includes a battery bus () and a heater bus (). A high-voltage battery pack () is electrically coupled to the battery bus and a resistive load element () is electrically coupled to the heater bus (). A high-voltage energy converter (HVEC) module () is electrically coupled to the vehicle bus (), the high-voltage battery pack (), and the resistive load element (). The HVEC module regulates power on the vehicle bus (), the battery bus (), and the heater bus () and operates in multiple functional modes including a constant voltage mode, a constant current mode, and a constant battery current mode.

High-voltage energy regulated conversion circuit

A high-voltage energy regulated conversion circuit (HVERCC) () for electrically coupling to a vehicle bus () is provided. The HVERCC () includes a high-voltage energy converter (HVEC) module () coupled to the vehicle bus (), a battery-pack high-voltage bus battery bus (), and a WEG heater bus (). The battery bus () is coupled to a high-voltage battery pack () and a WEG heater circuit (). The HVEC module (), the high-voltage battery pack (), and the WEG heater circuit () are coupled to a logic controller () via a network (). The logic controller () regulates the power on the vehicle bus (), the battery bus (), and the WEG heater bus (). An operational method for the HVEC module () is also provided.

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Northville, MI, United States of America

Matthew Roger Dedona