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):
-
B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60L - PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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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