Gm Global Technolgoy Operations, Inc.

Yangbing Zeng

Andreas M Lippert

Arun S Solomon

Mei Cai

Xingcheng Xiao

Yue-Yun Wang

Scott E Parrish

Rodney Brewer Rask

Robert J Schoenherr

Andrew C Baughman

Taylor R Garrick

Ronald M Otto

Karl C Dorgan

Nicholas R Bratton

Anil Yadav

Michael C Drake

Ansis Upatnieks

Anandakrishnan S

A thermal barrier component for an electrochemical cell according to various aspects of the present disclosure includes a functional material. The functional material includes at least one of a hydrate of a metal carbonate and a hydrate of a metal phosphate. The functional material is configured to release water vapor at a first temperature of greater than or equal to about 100° C. and decompose to release a gaseous fire retardant at a second temperature of greater than or equal to about 300° C. Another thermal barrier component according to various aspects of the present disclosure includes a hydrate and a fire retardant. The hydrate is configured to release water in an amount greater than or equal to about 1 kg at a first temperature of greater than or equal to about 100° C. The fire retardant is configured to decompose at a second temperature of greater than or equal to about 300° C.

Thermal barrier components including hydrates for mitigating thermal runaway in batteries

An energy storage assembly includes a plurality of battery cells electrically connected to each other to form a battery pack in which the battery cells are grouped together to form a first stack of cells and a second stack of cells. The energy storage assembly also includes a first barrier disposed between the first stack of cells and the second stack of cells to reduce heat transfer between the first stack of cells and the second stack of cells. The energy storage assembly further includes a coolant plate disposed along the battery cells. The coolant plate defines a channel for guiding a fluid therethrough to thermally transfer heat away from the battery cells. The coolant plate defines a slot spaced from the channel, and the slot axially aligns with the first barrier to reduce heat transfer between the first stack of cells and the second stack of cells.

Energy storage assembly

A system for self-discharge prognostics for vehicle battery cells with an internal short circuit includes a plurality of battery cells and a voltage sensor providing open-circuit voltage data over time for each battery cell. The system further includes a computerized prognostic controller operating programming to monitor the open-circuit voltage data over time for each of the plurality of battery cells and evaluate a voltage drop rate through a time window for each of the plurality of battery cells based upon the open-circuit voltage data. The controller further identifies one of the plurality of battery cells to include the internal short circuit based upon the voltage drop rate and signals an alert based upon the one of the plurality of battery cells including the internal short circuit.

Method and system for self-discharge prognostics for vehicle battery cells with an internal short circuit

A fuel injector has a spray nozzle with a plurality of spray discharge orifices, each of which has an elongated cross-section having a major axis orientable to a center electrode of a spark plug in the combustion chamber.

Fuel injector

A method and article of manufacture are provided to operate a spray-guided, spark-ignition, direct fuel injection engine, including injecting a first fuel pulse during a combustion cycle, and initiating spark ignition by energizing a spark igniter. A second fuel pulse is injected during the combustion cycle effective to form an ignitable fuel-air mixture proximal to the spark igniter during a period in time whereat the spark igniter is energized. A preferred elapsed time between an end of the first fuel pulse and start of the spark ignition is determined based upon engine load.

Method and apparatus for operating a spark-ignited direct fuel injection engine

A spark-ignition, direct injection internal combustion engine includes a fuel injector effective to produce a fuel spray pattern which is relatively compact at low loads and relatively large at high loads.

Method and apparatus for a spark-ignited direct injection engine

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Rochester Hills, MI, United States of America

Yangbing Zeng