Abstract: A storage device comprising two pole storage elements for electrical charges; inverter groups including full bridges connected in series, wherein exactly one of the full bridges of each of the inverter groups is connected with poles of each of the storage elements; a control unit configured to determine storage status and optimize charge and discharge processes of the storage elements through the full bridges based on a respective storage status; and a respective two pole connection at each of the inverter groups. The control unit includes control modules connected in a network, wherein each of the control modules determines the storage status of exactly one of the storage elements and optimizes a charging and discharging process of the exactly one of the storage elements, wherein the control modules are connected by a data bus, further characterized by storage modules respectively including exactly one of the storage elements.

Abstract: The shuttering member of this invention comprises a foamed resin block rabbeted along at least two opposed longitudinal edges of the same major surface of the block and having internal strengthening rods across the width of the block. The invention also comprises a method of producing a foamed shuttering member having strengthening rods.