The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 06, 2020
Filed:
Aug. 16, 2018
Ford Global Technologies, Llc, Dearborn, MI (US);
Xiaohong Duan, Canton, MI (US);
Richard Dyche Anderson, Plymouth, MI (US);
FORD GLOBAL TECHNOLOGIES, LLC, Dearborn, MI (US);
Abstract
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.