Nec Energy Solutions, Inc.

American Energy Storage Innovations, Inc.

Bud Collins

C Michael Hoff

David A Colucci

Greg Tremelling

Tom De Lucia

Scott H Reitsma

Erik Nelson

A system architecture for grid electrical energy storage comprising substantial numbers of cells connected in parallel. The lowest level of modularity comprising about eighteen or more individual cells connected in parallel. The disclosed architecture reduces the number of parts, complexity, and variability, while increasing one or more of reliability, service life, and energy capacity of a large-scale grid energy storage system, relative to a conventional multi-parallel string architecture.

Grid energy storage system featuring massively parallel-connected cells

A method of controlling current in a parallel battery systems includes providing at least two parallel connected batteries, each said battery having an internal resistance and dissipating heat while operating; during operation, measuring at least the temperature and current of each individual battery; and providing instructions to a temperature control system having a temperature control module coupled with each said battery for individually cooling each said battery to adjust temperature of at least one battery in order to maintain the current at a target value.

Temperature controlled parallel balancing

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Berlin, MA, United States of America

Bud Collins