Abstract: An electric energy storage device includes a plurality of electrical energy cells. Each of the cells has an anode plate, a cathode plate, and electrolyte material. Current collectors are provided between the cells to conduct electrical current between the cells. The current collectors optionally include a seal that prevents electrolyte flow between the cells while permitting flow of vapor between the cells. The cells and current collectors may be contained in a common pressure vessel without separate pressure vessels being provided for each of the cells.

Abstract: An electric energy storage device, comprises a casing and a coiled winding disposed within the casing. The winding includes a cathode plate including a strip having a pair of elongated side edges, an anode plate including a strip having a pair of elongated side edges, and a separator located between the cathode and anode plates. The cathode and anode plates are wound in an offset relationship so that one elongated side edge of the cathode plate extends beyond one elongated side edge of the anode plate at a first side of the winding, and the other elongated side edge of the anode plate extends beyond the other elongated side edge of the cathode plate at a second side of the winding opposite the first side. An electrolyte material is located within the winding.

Abstract: An electric energy storage device comprises a casing and a coiled winding disposed within the casing. The winding includes a cathode plate, an anode plate, and a separator located between the cathode and anode plates. The cathode and anode plates are wound in an offset relationship. Two current collectors are secured to the casing, one current collector being pressed against the first side of the winding to contact the cathode plate, and the other current collector being pressed against the second side of the winding to contact the anode plate. A pressure vessel is provided to hold at least one of the casings having at least one of the windings therein. An electric vehicle is provided including a plurality of the energy storage devices.