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1. (WO2016061034) COOLING STRATEGY FOR BATTERY SYSTEMS

Pub. No.:    WO/2016/061034    International Application No.:    PCT/US2015/055219
Publication Date: Fri Apr 22 01:59:59 CEST 2016 International Filing Date: Wed Oct 14 01:59:59 CEST 2015
IPC: B60L 11/18
B60L 7/10
G01R 31/36
H02J 7/00
Applicants: JOHNSON CONTROLS TECHNOLOGY COMPANY
Inventors: JIN, Zhihong
SISK, Brian C.
OBASIH, Kem M.
JOHNSON, Mark R.
WYATT, Perry M.
ALIYEV, Timur L.
ZHANG, Zhenli
Title: COOLING STRATEGY FOR BATTERY SYSTEMS
Abstract:
Embodiments describe a battery system that includes a first battery module coupled to a regenerative braking system and a control module that controls operation of the battery system by: determining a predicted driving pattern over a prediction horizon using a driving pattern recognition model based in part on a battery current and a previous driving pattern; determining a predicted battery resistance of the first battery module over the prediction horizon using a recursive battery model based in part on the predicted driving pattern, the battery current, a present bus voltage, and a previous bus voltage; determining a target trajectory of a battery temperature of the first battery module over a control horizon using an objective function; and controlling magnitude and duration of electrical power supplied from the regenerative such that a predicted trajectory of the battery temperature is guided toward the target trajectory of the battery temperature during the control horizon.