COMBINATION ENERGY STORAGE SYSTEM FOR SOLAR, WIND AND OTHER NON-DISPATCHABLE ENERGY SOURCES SERVING VARIABLE LOADS IN VARIOUS CONDITIONS

摘要

A compound energy storage system made up of two energy storage devices of different characteristics. The first device is a deep cycle lithium ion battery (or similar characteristics) and the second device is deep cycle lead-acid battery (or similar). Both devices are connected in parallel with control circuitry that manages the charging/discharging of each device in such a way that maximizes lifetime of the combined energy storage system when powering a load. First device acts as primary power source and is cycled daily under normal conditions. Second device provides additional power for periods of extended power draw and low temperatures, when the first device is unable to deliver sufficient energy or unable to take a charge. Excess power from external energy source or reserved in one of the devices shall be used to power components that will control device temperature and optimize overall performance of the storage system.