Ford Global Technolgoies, LLC

Ford Motor Company Limited

Josephine S Lee

Mark Edward Shields

Xu Wang

Chuan He

Xiaoguang Chang

Frank Louis Stellon

William David Treharne

Philip Michael Gonzales

James Brian Keyse

Majed Samhan Mohammed

Matthew Loiselle

Deborah Diane Pittman

Mike Veenstra

Bijal Patel

Rick Amori

Patrick Daniel Maguire

Paul Stephen Bryan

Bhaskara Rao Boddakayala

Bruce Carvell Blakemore

Joseph F Stanek

Mark J Ferrel

Hanyang B Chen

Charles Everett Badger, Ii

Michael Irby

Bo Wu

Sassan Farahmand

Masahiro Kimoto

Brian Keyse

Steven F Chorian

John Sturza

Brandon Michael Dawson

Robert Taenaka

Thomas J Coupar

Jeremy L Russell

Kevin Lloyd Newman

Cathleen Tistle

Jeff Raymond Mohr

William T Moore

Edward Vann Decker

Edward Popyk

George Hart Vrampas

Vineeth Seshadri Kallur

Changjian Hu

Dawn Bernardi

Viet Quoc To

Thomas M Gwozdek

Harold D Wiard

Bastian Hartmann

Joseph Andrew Zamora

James J Gibbons

Sai K Pentapati

Daryl Sitar

Richard Thomas Amori

Jagmohan Singh

Matthew DeDona

Rick Lagerstrom

Mark Polster

A monitoring method includes, among other things, within a vehicle, providing a first electrical system with an auxiliary battery, and a second electrical system with a primary battery. The method further includes electrically coupling the first electrical system to the second electrical system, electrically loading the auxiliary battery and the primary battery, and comparing an electrical parameter of the auxiliary battery to a threshold value to assess a state of the auxiliary battery.

Vehicle battery monitoring method and assembly

This disclosure describes vehicle systems and methods for controlling charging of an auxiliary battery of an electrified vehicle. Exemplary charging methods align the charge management of an auxiliary battery to occur only during low cost charging windows.

Auxiliary battery charging systems and methods for electrified vehicles

A hybrid vehicle includes an isolation switch disposed between a first bus that is electrically coupled to a starter for an engine and a second bus that is electrically coupled to a power converter and accessory loads. The hybrid vehicle includes a controller programmed to normally command the switch closed, and, in response to expiration of a predetermined time interval without starting the engine, command the switch to open for a predetermined duration to perform diagnostics on the isolation switch.

Vehicle power relay startup control and diagnostic

A vehicle includes a starter motor having a dedicated power source, an electric machine, and a controller configured to, responsive to a command for the motor to start an engine, open a switch to isolate the motor and source from a network electrically connected with the machine, and responsive to voltages on both sides of the switch falling within a predetermined range, close the switch to charge the source.

Isolation switch operation

A method according to an exemplary aspect of the present disclosure includes, among other things, detecting a battery fault of a battery of an electrified vehicle, activating a HVAC system ON, commanding the HVAC system to a fresh air mode, communicating fresh air into a passenger cabin, and expelling battery vent byproducts from the passenger cabin through at least one air extractor vent during key-on or key-off states.

Cabin venting system and method for an electrified vehicle

This disclosure describes vehicle systems and methods for controlling charging of an auxiliary (i.e., low voltage) battery of an electrified vehicle. Exemplary charging methods may dynamically adjust a low voltage setpoint of a power converter during the low voltage support. The proposed systems and methods therefore achieve constrained low voltage support by controlling the power drawn by the power converter at an appropriate level during the low voltage support.

Systems and methods for controlling charging of electrified vehicle auxiliary batteries

A vehicle includes main contactors powered via a low voltage bus and disposed electrically between a traction battery and a high voltage bus, and a controller. The controller, responsive to the contactors remaining open following activation of the low voltage bus and reported voltage values associated with the high voltage bus being less than a threshold, operates a horn of the vehicle.

Service disconnect notification strategy

A vehicle includes an engine and a controller. The controller may be configured to, responsive to indication of a temperature of a starter-generator exceeding a de-rated threshold, command the engine to start and disable engine automatic shut-off. And the controller may be configured to, responsive to indication of the temperature exceeding a disabled threshold, or the temperature exceeding the de-rated threshold and a traction battery discharge power being less than a threshold, command the engine to start and shed a load.

Engine operation based on integrated starter-generator temperature

A vehicle charging system includes a controller programmed to, in response to a charger being coupled to a power source and parameters being indicative of a low charge level of an auxiliary battery and a full charge level of a traction battery, decouple the traction battery from the power converter and the charger and charge the auxiliary battery from the charger.

System and method for charging electrified vehicle low-voltage battery

A current sensor fault detection system is disclosed which enables detection of a current sensor fault while the current sensor is operating and providing a current sensor output which is within a normal operating range. The current sensor is monitored by at least one controller which compares a change in battery state of charge error with a predetermined threshold. The change in battery state of charge error is a difference between a first change in battery state of charge calculated by integrating battery current with respect to a time and a second change in battery state of charge calculated based on the battery open circuit voltage during the time.

In-range current sensor fault detection

A system using a computer to be configured to perform particular actions by virtue of having software, firmware, hardware, or a combination installed. One aspect includes a system, programmed to receive a fault signal from an auxiliary battery sensor. The system also determines if a low voltage set point is greater than the main battery voltage, and sends an open switch signal to a battery isolation switch if the low voltage set point is greater than the main battery voltage value. The system will send an auxiliary set point signal to an auxiliary battery charger to maintain a low voltage. The system will receive a current signal from an auxiliary battery sensor to indicate an auxiliary battery current value. The system also determines if the auxiliary battery current is above a maximum current value, and send a disable auxiliary battery maintenance signal to the auxiliary battery charger.

System and method of maintaining high voltage battery charging with detected auxiliary battery fault

A method of detecting a leak in a battery pack according to an exemplary aspect of the present disclosure includes, among other things, calculating a predicted amount of thermal energy at a position, measuring an actual amount of thermal energy at the position, and comparing the predicted amount to the actual amount to identify if a battery pack is leaking.

Battery pack leak detection assembly and method

A method for extending the life cycle of a battery includes receiving a storage mode status signal at a battery controller and incrementally adjusting a state of charge window over a period of time in response to receiving the storage mode status signal.

Method and system for extending battery life

A cooling system may be operable to cool a battery pack or other device through a heat exchange operation supported, at least in part, with cycling of a coolant relative to a coldplate or other thermally conducting surface of the device and/or attached thereto. The system may include a coldplate operable to exchange heat with a battery pack; and a coolant tank operable to exchange heat with the coldplate, the tank having a channel for directing a coolant flow in a direction from an inlet of the tank to at least one outlet of the tank and an inlet accumulator between the inlet and a beginning of the channel, wherein the inlet accumulator is wider along the coolant flow direction than the channel and the inlet and having a sloped side leading towards the channel configured to pool the coolant flow prior to entry into the channel.

Battery pack liquid channel and coldplate cooling system

A vehicle is disclosed that includes a battery and a controller programmed to calculate a battery voltage characteristic from previously measured charge and discharge data. The battery voltage characteristic is based on differences between the previously measured values when state of charge falls in a range in which the differences are approximately equal. Outside of the range, the charge and discharge voltage data are corrected based on a square root of time to obtain the battery voltage characteristic. The characterization may be performed with a high-rate continuous charge and discharge cycle. Also disclosed is an apparatus for generating the battery characteristic that includes a bi-directional power supply. The battery voltage characteristic is obtained based on the differences of the charge and discharge voltage data and corrected data based on the square root of time. A method is also disclosed based on the same.

Method to estimate battery open-circuit voltage based on transient resistive effects

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Novi, MI, United States of America

Josephine S Lee