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Title: Electrified vehicle power conversion for low voltage bus

Abstract

An electrified vehicle high voltage battery pack has series-connected battery units or cells combining to provide the high voltage. To power a low voltage bus (e.g., for low voltage accessories or charging a low voltage battery) in a balanced manner, a plurality of DC/DC converters each has an input coupled to a respective battery unit and the converters have respective outputs coupled in parallel to the low voltage bus. A first loop controller receives an actual bus voltage. The first controller generates a target current in response to the bus voltage adapted to regulate the actual bus voltage to a target voltage less than the high voltage. A second controller distributes the target current into a plurality of allocated current commands for respective converters according to respective states of charge of the battery units connected to the converters.

Inventors:
;
Issue Date:
Research Org.:
Ford Global Technologies, LLC, Dearborn, MI (United States)
Sponsoring Org.:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
OSTI Identifier:
1525006
Patent Number(s):
10214111
Application Number:
15/237,994
Assignee:
Ford Global Technologies, LLC (Dearborn, MI)
Patent Classifications (CPCs):
H - ELECTRICITY H02 - GENERATION H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER
B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60L - PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
DOE Contract Number:  
AR0000271
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016-08-16
Country of Publication:
United States
Language:
English

Citation Formats

Hand, III, Michael J., and Anderson, Richard Dyche. Electrified vehicle power conversion for low voltage bus. United States: N. p., 2019. Web.
Hand, III, Michael J., & Anderson, Richard Dyche. Electrified vehicle power conversion for low voltage bus. United States.
Hand, III, Michael J., and Anderson, Richard Dyche. Tue . "Electrified vehicle power conversion for low voltage bus". United States. https://www.osti.gov/servlets/purl/1525006.
@article{osti_1525006,
title = {Electrified vehicle power conversion for low voltage bus},
author = {Hand, III, Michael J. and Anderson, Richard Dyche},
abstractNote = {An electrified vehicle high voltage battery pack has series-connected battery units or cells combining to provide the high voltage. To power a low voltage bus (e.g., for low voltage accessories or charging a low voltage battery) in a balanced manner, a plurality of DC/DC converters each has an input coupled to a respective battery unit and the converters have respective outputs coupled in parallel to the low voltage bus. A first loop controller receives an actual bus voltage. The first controller generates a target current in response to the bus voltage adapted to regulate the actual bus voltage to a target voltage less than the high voltage. A second controller distributes the target current into a plurality of allocated current commands for respective converters according to respective states of charge of the battery units connected to the converters.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {2}
}

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Works referenced in this record:

Converter control device
patent, December 2009


Automotive vehicle power system
patent, February 2012


Power supply system and vehicle
patent, July 2010


Multistage and multiple-output DC-DC converters having coupled inductors
patent, July 2014


Autonomous battery cell balancing system with integrated voltage monitoring
patent, March 2005


Circuit arrangement including a multi-level converter
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Startup power control in a fuel cell system
patent, September 2012


Closed loop control of battery power limits based on voltage
patent, March 2007


Multi-path power factor correction
patent, September 2013


DC converter for a motor vehicle
patent, October 2014


DC-DC converter system of an electric vehicle and control method thereof
patent, December 2014