Electrified vehicle power conversion for low voltage bus
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.
- Research Organization:
- Ford Global Technologies, LLC, Dearborn, MI (United States)
- Sponsoring Organization:
- USDOE Advanced Research Projects Agency - Energy (ARPA-E)
- DOE Contract Number:
- AR0000271
- Assignee:
- Ford Global Technologies, LLC (Dearborn, MI)
- Patent Number(s):
- 10,214,111
- Application Number:
- 15/237,994
- OSTI ID:
- 1525006
- Resource Relation:
- Patent File Date: 2016-08-16
- Country of Publication:
- United States
- Language:
- English
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