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Title: Alternator control for battery charging

Patent ·
OSTI ID:1193295
; ; ;

In accordance with an aspect of the present disclosure, an electrical system for an automotive vehicle has an electrical generating machine and a battery. A set point voltage, which sets an output voltage of the electrical generating machine, is set by an electronic control unit (ECU). The ECU selects one of a plurality of control modes for controlling the alternator based on an operating state of the vehicle as determined from vehicle operating parameters. The ECU selects a range for the set point voltage based on the selected control mode and then sets the set point voltage within the range based on feedback parameters for that control mode. In an aspect, the control modes include a trickle charge mode and battery charge current is the feedback parameter and the ECU controls the set point voltage within the range to maintain a predetermined battery charge current.

Research Organization:
FCA US LLC, Auburn Hills, MI (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
EE0003347
Assignee:
FCA US LLC (Auburn Hills, MI)
Patent Number(s):
9,083,202
Application Number:
13/718,650
OSTI ID:
1193295
Resource Relation:
Patent File Date: 2012 Dec 18
Country of Publication:
United States
Language:
English

References (23)

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Method and apparatus for charging a secondary battery patent December 1996
Vehicle-use alternating current generator control system patent March 1997
Low power magnetometer circuits requiring a single switching cycle patent June 1997
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Brake system for a motor vehicle patent October 1999
Fast battery charging system and method patent June 2000
Battery charge optimizing system patent February 2001
Battery pack having memory patent June 2001
Battery pack having memory patent August 2001
Battery pack having memory patent October 2001
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Output voltage controller for AC vehicle generator patent May 2011
System for electrically connecting and disconnecting a vehicle generator from a vehicle storage unit patent February 2012
Regenerative braking system patent June 2013
Vehicle power-generation control apparatus patent October 2013
Voltage monitoring circuit, test method therefor, and voltage monitoring system patent October 2014

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Related Subjects

25 ENERGY STORAGE
33 ADVANCED PROPULSION SYSTEMS
42 ENGINEERING