Johnson Controls Technology LLC

Cps Technology Holdings LLC

Matthew D Elberson

Zhihong H Jin

Steven J Wood

Mark R Johnson

David R Boone

Michael E Iverson

Renate Witt

Uday S Kasavajjila

Kogatam Shreevani

Nicholas H Norppa

Disclosed is a battery system comprising a battery pack having a plurality of cells, each of the plurality of cells each having a cell temperature; a battery management system coupled to the battery pack and designed to obtain temperature plurality of temperatures from the battery pack wherein the battery management system is configured to output a single battery pack temperature value. Further disclosed is a battery system comprising a battery pack having a plurality of cells, each of the plurality of cells each having a cell state of charge; a battery management system coupled to the battery pack and designed to obtain a plurality of state of charges from the battery pack, wherein the battery management system is configured to output a single battery pack state of charge value.

Method for determining battery pack temperature and state of charge

In an embodiment, a system includes a battery management unit (BMU) coupled to a battery pack of an xEV. Further, the BMU is configured to determine an energy remaining value for the battery pack based, at least in part, on a minimum cell temperature and a minimum cell state of charge percentage (SOC %) determined by the BMU for the battery pack.

System and method for energy prediction in battery packs

Systems and methods for pre-charging a bus capacitance in vehicles that receive at least a portion of their motive power from electricity generated from a battery are provided. By way of example, an embodiment includes a vehicle control unit (VCU) that receives battery pack data from a battery management unit (BMU) of each of a plurality of battery packs and determines, based on the battery pack data, which battery packs may be used to pre-charge the bus capacitance in parallel. The VCU issues commands to each of the BMUs to connect pre-charge circuits between each of the plurality of battery packs and the bus capacitance and receives status information from each of the BMUs to determine whether or not the bus capacitance was successfully pre-charged by the battery packs.

Pre-charging vehicle bus using parallel battery packs

Growing community of inventors

Menomonee Falls, WI, United States of America

Matthew D Elberson