ENERGY STORAGE SYSTEM WITH DUAL-ACTIVE-BRIDGE CONVERTER

摘要

An energy storage device includes: a number of cells; and a dual-active-bridge converter connected to the cells, wherein the cells are floating relative to the system and are galvanically isolated therefrom. The energy storage device can be included in an energy storage system that includes: a grid tie unit comprising at least one DC/AC converter; and multiple pods connected to the grid tie unit, each pod including: a number of cells; and a power electronics unit, wherein the cells are floating relative to the system and are galvanically isolated therefrom.

主权项

1. An energy storage device comprising:
a grid tie unit comprising at least one DC/AC converter, the grid tie unit coupling the energy storage device to an external AC system; a DC bus coupled to the grid tie unit; a plurality of pods connected to the DC bus, each pod including:
plurality of battery cells; and.a dual-active-bridge converter connected to the plurality of battery cells, wherein the plurality of battery cells are floating relative to and galvanically isolated from the DC bus.