Charge storage devices with overlapping, folded electrodes
AssigneeEnergy Storage Systems PTY LTD
InventorSarkis Minas Keshishian
Life of this patent
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Abstract
A charge storage device includes a layered strip which is folded lengthways along fold lines (14, 15) in the directions indicated by arrows (16, 17) to form a folded layered strip (18). Strip (18) is then cut to a predetermined length (19). After the proportions of activated and conductive carbon, and the thickness of the paste, have been settled the length to which strip (18) is cut is the final determining factor for the capacitance, time constant, power density and energy density of the charge storage device. The cut length (19) is then folded crossways along fold lines (20, 21) in the directions indicated by respective arrows (22, 23) to form a twice folded structure (24).
Claims41
A charge storage device including:
- a first longitudinally extending sheet electrode;
- a second longitudinally extending sheet electrode disposed at least partially overlapping with and adjacent to the first electrode;
- wherein the second electrode is folded together with the first electrode along at least one longitudinal electrode fold line and along at least one transverse electrode fold line;
- a porous separator disposed between the at least partially overlapping and adjacent electrodes;
- and
- a sealed package for containing the electrodes, the separator and an electrolyte, whereby the first electrode is electrically connected to a first terminal and the second electrode is electrically connected to a second terminal, both the first and second terminals extending from the package to allow electrical connection to the respective electrodes.
A method of manufacturing a charge storage device including the steps of:
- providing a first longitudinally extending sheet electrode;
- disposing a second longitudinally extending sheet electrode at least partially overlapping with and adjacent to the first electrode;
- disposing a porous separator between the at least partially overlapping and adjacent electrodes;
- folding the second electrode together with the first electrode along at least one longitudinal electrode fold line and along at least one transverse electrode fold line;
- and
- sealing the electrodes, the separator and an electrolyte in a package such that the first electrode is electrically connected to a first terminal and the second electrode is electrically connected to a second terminal, whereby both the first and second terminals extend from the package to allow electrical connection to the respective electrodes.
A charge storage device including:
- a first longitudinally extending sheet electrode;
- a second longitudinally extending sheet electrode disposed adjacent to the first electrode and being folded together with the first electrode along a longitudinal fold line and a transverse fold line;
- a porous separator disposed between adjacent electrodes;
- and
- a sealed package for containing the electrodes, the separator and an electrolyte, whereby the first electrode is electrically connected to a first terminal and the second electrode is electrically connected to a second terminal, both the first and second terminals extending from the package to allow electrical connection to the respective electrodes.
Dependencies are inferred from the claim text.