Ford Global Technologies, LLC

Visteon Global Technologies, Inc.

Ford Motor Company Limited

Automotive Components Holdings, LLC

Xiaohong Nina Duan

Yanan Zhao

Ming Lang Kuang

Mark Steven Yamazaki

Richard Dyche Anderson

Angel Fernando Porras

Xu Wang

Sohel Anwar

Robert Taenaka

Clive McKenzie

Dean T Wisniewski

Jeffrey Allen Doering

William David Treharne

Yonghua Li

Yixin Yao

Jordan Mazaira

Norman Szalony

Brian James Andonian

Joseph Palazzolo

Chi Paik

Hyeongcheol Lee

Gary Monkaba

Julia Helen Buckland Seeds

Dawn Bernardi

Todd A Kendall

Hualin Tan

Qi Jiao

Aaron Kleinhans

Zhesheng Li

Loren C Macklem

Matt Rahaim

W Paul Perkins

Jianrong Huang

Stephen Shen

Methods and systems for controlling a temperature of an electric energy storage device of via a cooling device are disclosed. In one example, a temperature of an electric energy storage device may be permitted to increase when a vehicle is within a threshold distance of an expected parking location of the vehicle so that less electrical energy of the electric energy storage device may be consumed.

Methods and system for thermal management of an electric energy storage device

An electrified vehicle includes a traction battery, an engine, and a controller. The controller is configured to generate a request for the engine in response to an input passing a threshold and to adjust the threshold when a state of health (SOH) of the traction battery is at a chance of violating a target, such as a warranty target. The request for the engine may be an engine pull up (EPU) request for starting the engine with the threshold being an EPU threshold in which case the controller lowers the EPU threshold when the battery SOH is at a chance of violating the target. The request for the engine may be an engine pull down (EPD) request for stopping the engine with the threshold being an EPD threshold in which case the controller lowers the EPD threshold when the battery SOH is at a chance of violating the target.

Electrified vehicle configured to adjust engine pull up/down thresholds based on battery state of health

A vehicle includes a battery, a motor, and one or more controllers. The controllers, responsive to data indicative of an internal cell temperature of one or more cells of the battery exceeding a threshold, decrease power output from the battery to the motor. The data is based on a surface temperature of at least one of the cells and a cell heating power parameter derived from a plurality of parameters and via a delay timer and a filter.

Vehicle control based on battery temperature estimation

A system and method for intelligent battery charging management to improve battery life and charging efficiency of high capacity batteries that may not be deeply discharged on a regular basis may learn driving habits automatically and/or with user input and select an ending state-of-charge (SOC) to limit battery charging to less than maximum capacity based on current and/or anticipated ambient temperature and battery health of life (HOL). An expected vehicle travel distance before the next charge may be learned or determined based on vehicle or user inputs. An ending SOC based on battery temperature, a delta SOC to meet propulsive energy for the expected travel distance, cycling effect (depth of discharge) on battery HOL for a given delta SOC, and/or battery working efficiency may be used to control charging of the vehicle battery.

Intelligent vehicle battery charging for high capacity batteries

This disclosure relates to an electrified vehicle configured to selectively deactivate a restricted power mode based on an acceleration request, such as an imminent or current acceleration request. A corresponding method is also disclosed. An example electrified vehicle includes a battery and a controller configured to apply a restricted power mode when a state of health of the battery is below a predefined lower threshold. Further, when in the restricted power mode, the controller is configured to limit an amount of power drawn from the battery. Additionally, the controller is configured to selectively deactivate the restricted power mode in response to a signal indicating a current or imminent request for acceleration of the electrified vehicle requiring power to be drawn from the battery above an upper limit of the restricted power mode.

Electrified vehicle configured to selectively deactivate restricted power mode based on acceleration request

This disclosure relates to an electrified vehicle with a thermal management system for a battery. A corresponding method is also disclosed. An example electrified vehicle includes a battery and a thermal management system configured to thermally condition the battery at one of a plurality of thermal conditioning levels. Each of the thermal conditioning levels corresponds to a respective one of a plurality of battery temperature thresholds. The electrified vehicle further includes a controller. The controller is configured to determine which of the plurality of battery temperature thresholds is met or exceeded based on a temperature of the battery and to command the thermal management system to thermally condition the battery at corresponding one of the plurality of thermal conditioning levels. Further, when a state of health of the battery is outside a predefined range, the controller is configured to adjust each of the plurality of battery temperature thresholds.

Electrified vehicle with battery thermal management system configured to adjust temperature thresholds based on battery state of health

A power system includes a primary bus connected to a traction battery, a secondary bus connected to an auxiliary battery, a power converter between the traction and auxiliary batteries, and a controller. The controller commands the power converter to increase a magnitude of current output to the secondary bus when an amount of charge current received by the traction battery exceeds a first amount threshold and commands the power converter to decrease the magnitude when an amount of charge current received by the auxiliary battery exceeds a second amount threshold.

Battery thermal management via current control

A vehicle includes a battery, an electric machine, and a controller. The battery has a state of charge. The electric machine is configured to draw electrical power from the battery to propel the vehicle in response to an acceleration request and to deliver electrical power to the battery to recharge the battery. The controller is programmed to adjust an estimation of battery state of charge based on a feed forward control that includes a coulomb counting algorithm, a first feedback control that includes a first battery model, and a second feedback control that includes a second battery model. The controller is further programmed to control the electrical power flow between the battery and the electric machine based on the estimation of the state of charge of the battery.

Battery state of charge estimation system for a hybrid/electric vehicle

A vehicle includes an electric machine, a battery, an accelerator pedal, a battery cooling system, and a controller. The electric machine is configured to propel the vehicle. The battery is configured to provide electrical power to the electric machine. The battery cooling system is configured to cool the battery in a plurality of cooling modes. A transition between cooling modes of the battery cooling system corresponds to either an increase or a decrease in battery power being utilized to cool the battery. The controller is programmed to truncate an acceleration request under certain conditions to prevent an increase in battery power output in order to reduce a rate at which the battery temperature increases and to prevent a transition to a cooling mode that requires an increase in battery power output.

Acceleration control system for an electric vehicle

A vehicle includes an electric machine, a traction battery, a low-voltage power system, a DC to DC converter, and a controller. The electric machine is configured to accelerate the vehicle and to slow the vehicle. The traction battery is configured to deliver electrical power to the electric machine and to receive electrical power from the electric machine via a high-voltage bus. The low-voltage power system has vehicle accessories, an accessory battery, and a low-voltage bus. The DC to DC converter is configured to transfer electrical power between the high-voltage bus and the low-voltage bus. The accessory battery is configured to deliver electrical power to the vehicle accessories and to receive or deliver power from or to DC to DC converter via the low-voltage bus. The controller is configured to controller the transfer of electrical power between the high-voltage bus and the low-voltage bus.

Battery power control system for hybrid/electric vehicles

A vehicle includes a traction battery and a controller. The controller, responsive to a command to enter a highway, confirmation the traction battery can output power to accelerate the vehicle to enter the highway via an entrance at a same speed as traffic on the highway in a vicinity of the entrance, and an increase in temperature beyond a threshold of the traction battery predicted to occur on the highway due to expected commands to maintain the same speed on the highway with power from the traction battery, increases cooling of the traction battery prior to entering the highway.

Vehicle maneuver planning based on predicted battery power

A vehicle includes an electric machine, a battery, a cooler, and a controller. The electric machine is configured to propel the vehicle. The battery is configured to power the electric machine. The cooler is configured to cool the battery. The controller is programmed to, responsive to the vehicle traveling from first to second locations on a predetermined route, operate the electric machine such that battery charge is depleted from an initial charge at the first location to a minimum battery charge limit upon arrival at the second location. The controller is also programmed to, responsive to the vehicle traveling from first to second locations on a predetermined route, operate the cooler such that battery temperature increases from an initial temperature at the first location to a battery shutdown temperature limit at the second location.

Hybrid vehicle

A high voltage battery pack comprises series-connected battery units, each separately powering a respective DC/DC converter. The converter outputs are coupled in parallel to supply a low-voltage DC bus. A central module has 1) an outer loop controller generating a target current to regulate the bus voltage and 2) an allocator distributing the target current via allocated current commands for respective converters. Local controllers each regulate an output current of a respective converter. The allocator identifies battery units having a predetermined deviation from a reference metric that characterizes the battery pack, allocates reverse currents to respective converters for the identified battery units, and increases the target current commanded for the DC/DC converters not allocated to have a reverse current by the allocated reverse currents. Battery units with extremely low or high states as compared with the other units are quickly balanced, thereby improving overall performance of the battery pack.

Electrified vehicle DC power conversion with balancing of battery states

A vehicle includes a traction battery and a controller. The controller is programmed to output an age value of the traction battery based on a ratio of a reference capacity value to an initial reference capacity. The reference capacity value is derived from a mean and a standard deviation of a plurality of historical battery capacity values and has a predetermined probability of being less than an actual battery capacity. The controller is programmed to adjust a battery control strategy based on the age value. The vehicle includes an instrument cluster that is configured to display the age value.

Growing community of inventors

Canton, MI, United States of America

Xiaohong Nina Duan