# US 10,305,295 B2 · Energy storage cell, capacitive energy storage module, and capacitive energy storage system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,305,295 B2 - Document ID: US10305295B2 - Status: Granted - Kind: B2 - Application number: 15/043,315 - Filed: 2016-02-12 - Published: 2017-08-17 - Granted: 2019-05-28 - Earliest claimed: 2016-02-12 - Assignees: Capacitor Sciences Incorporated - Applicants: Capacitor Sciences Incorporated - Inventors: Ian S. G. Kelly-Morgan; Matthew R. Robinson; Paul Furuta; Daniel Membreno; Pavel Ivan Lazarev - Web page: https://patentgrep.com/patent/US10305295B2 ## CPC - H02J 7/585: {Sequential battery discharge in systems with a plurality of batteries} - H01G 9/00: Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture - H02J 1/102: being switching converters (H02J1/108, H02J1/12 take precedence) - H02J 7/56: Active balancing, e.g. using capacitor-based, inductor-based or DC-DC converters - H02J 7/751: {concerning the insertion or the connection of the batteries} - H01G 4/18: of synthetic material, e.g. derivatives of cellulose (H01G4/16 takes precedence) - H01G 11/56: Solid electrolytes, e.g. gels; Additives therein - H02J 7/345: {using capacitors as storage or buffering devices} - H02J 7/933: {the cycle being controlled or terminated in response to electric parameters} - H02J 2207/20: Charging or discharging characterised by the power electronics converter - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10) ## Abstract The present disclosure provides an energy storage cell comprising at least one capacitive energy storage device and a DC-voltage conversion device. The capacitive energy storage device comprises at least one meta-capacitor. The output voltage of the capacitive energy storage device is the input voltage of the DC-voltage conversion device. The present disclosure also provides a capacitive energy storage module and a capacitive energy storage system. ## Claims ### Claim 1 An energy storage cell comprising: at least one capacitive energy storage device; and a DC-voltage conversion device; wherein the capacitive energy storage device comprises one or more meta-capacitors, wherein the one or more metacapacitors comprise a first and second electrodes and a meta-dielectric material layer disposed between the first and second electrodes, wherein the meta-dielectric material layer is comprised of one or more composite organic compounds characterized by polarizability and resistivity, wherein a relative permittivity of the meta-dielectric material layer is equal to or greater than 100, wherein the output voltage of the capacitive energy storage device is an input voltage of the DC-voltage conversion device during discharging the capacitive energy storage device, wherein the input voltage of the capacitive energy storage device is an output voltage of the DC-voltage conversion device while charging the capacitive energy storage device. ### Claim 2 (depends on 1) The energy storage cell of claim 1, wherein a resistivity of the meta-dielectric material layer is equal to or greater than 1013 ohm/cm. ### Claim 3 (depends on 1) The energy storage cell of claim 1, wherein the meta-dielectric material layer includes one or more types of Sharp polymers and/or one or more types of Furuta polymers. ### Claim 4 (depends on 3) The energy storage cell of claim 3, wherein the meta-dielectric layer includes two or more Furuta polymers, including a Furuta polymer having an immobilized ion liquid group of a cationic type. ### Claim 5 (depends on 3) The energy storage cell of claim 3, wherein the meta-dielectric layer includes two or more Furuta polymers including a Furuta polymer having an immobilized ion liquid group of an anionic type. ### Claim 6 (depends on 1, 2, 3, 4, 5) The energy storage cell of any one of claims 1, 2 and 3-5, wherein said one or more meta-capacitors have a breakdown field greater than or equal to about 0.01V/nm. ### Claim 7 (depends on 1) The energy storage cell according to claim 1, further comprising a cooling mechanism in thermal contact with the capacitive energy storage device and/or the DC-voltage converter. ### Claim 8 (depends on 7) The energy storage cell according to claim 7, wherein the cooling mechanism is a passive cooling mechanism, or wherein air, water or ethylene glycol can be used as a coolant. ### Claim 9 (depends on 7) The energy storage cell according to claim 7, wherein the cooling mechanism is configured to remove heat from the capacitive energy storage device and/or the DC-voltage converter with a phase-change material. ### Claim 10 (depends on 7) The energy storage cell according to claim 7, wherein the cooling mechanism includes a reservoir containing a solid to liquid phase change material. ### Claim 11 (depends on 10) The energy storage cell according to claim 10, wherein the solid to liquid phase change material is paraffin wax. ### Claim 12 (depends on 1) The energy storage cell according to claim 1, wherein the DC-voltage conversion device comprises a control board based on a buck converter, boost converter, buck/boost converter, bi-directional buck/boost (split-pi) converter, Ćuk converter, single-ended primary inductor converter (SEPIC), inverting buck/boost converter, or four-switch buck/boost converters. ### Claim 13 (depends on 12) The energy storage cell according to claim 12, wherein the control board is configured to maintain a constant output voltage of the energy storage cell during a discharge of the one or more meta-capacitors from an initial charge state to a minimum charge state, wherein the minimum charge state is defined by a voltage on the meta-capacitor(s) which corresponds to a residual energy equal to from 0% to 20% of an initial reserved energy stored on the meta-capacitor(s). ### Claim 14 (depends on 13) The energy storage cell according to claim 13, wherein the constant output voltage of the energy storage cell is programmable by the control board. ### Claim 15 (depends on 13) The energy storage cell according to claim 13, wherein the DC-voltage conversion device comprises one or more switch-mode voltage converters wherein a switch-mode voltage converter is configured as a buck converter, boost converter, buck/boost converter, bi-directional buck/boost (split-pi) converter, {tilde over (C)}uk converter, single-ended primary inductor converter (SEPIC), inverting buck/boost converter, or four-switch buck/boost converters. ### Claim 16 (depends on 13) The energy storage cell according to claim 13, further comprising circuitry configured to enable observation of parameters selected from the following list: a voltage on the one or more meta-capacitors, a current going into or out of the one or more meta-capacitors, a current flowing into or out of the DC-voltage conversion device, an output voltage of the DC-voltage conversion device, a temperature at one or more points within the one or more meta-capacitors, a temperature at one or more points within the DC-voltage conversion device. ### Claim 17 (depends on 13) The energy storage cell according to claim 13, further comprising a power inverter configured to receive a direct current (DC) output voltage from the DC-voltage converter and configured to convert the DC output voltage from the DC-voltage converter to an alternating current (AC) output voltage. ### Claim 18 (depends on 1) The energy storage cell according to claim 1, wherein the DC-voltage converter includes power electronics switches based on silicon (Si) insulated-gate bipolar transistors (IGBTs), silicon carbide (SiC) metal oxide semiconductor field effect transistors (MOSFETs), gallium nitride (GaN) MOSFETs, Graphene or organic molecular switches. ### Claim 19 (depends on 18) The energy storage cell according to claim 18, wherein the power electronics switches comprise multiple switch elements stacked in series. ### Claim 20 A capacitive energy storage module comprising two or more individual energy storage cells having anodes and cathodes and an interconnection system, wherein the interconnection system connects the anodes and cathodes of the individual energy storage cells to create a common anode and common cathode of the capacitive energy storage module, wherein each individual energy storage cell includes one or more meta-capacitors coupled to a DC-voltage conversion device, wherein each individual energy storage cell includes at least one capacitive energy storage device and a DC-voltage conversion device; wherein the capacitive energy storage device comprises one or more meta-capacitors, wherein the one or more metacapacitors comprise a first and second electrodes and a meta-dielectric material layer disposed between the first and second electrodes, wherein the meta-dielectric material layer is comprised of one or more composite organic compounds characterized by polarizability and resistivity, wherein a relative permittivity of the meta-dielectric material layer is equal to or greater than 100, wherein the output voltage of the capacitive energy storage device is an input voltage of the DC-voltage conversion device during discharging the capacitive energy storage device, wherein the input voltage of the capacitive energy storage device is an output voltage of the DC-voltage conversion device while charging the capacitive energy storage device. ### Claim 21 (depends on 20) The energy storage module of claim 20, wherein the interconnection system includes a parameter bus connected to the two or more individual energy storage cells by power switches. ### Claim 22 (depends on 20) The energy storage module of claim 20, further comprising a power meter coupled to two or more individual energy storage cells. ### Claim 23 (depends on 20) The energy storage module of claim 20, further comprising a networked control node coupled to the two or more individual energy storage cells. ### Claim 24 A capacitive energy storage system comprising: two or more capacitive energy storage modules, wherein each of the one or more storage modules includes two or more individual energy storage cells having anodes and cathodes and an interconnection system, wherein each of the two or more individual energy storage cells includes at least one capacitive energy storage device and a DC-voltage conversion device, wherein the capacitive energy storage device comprises one or more meta-capacitors, wherein the output voltage of the capacitive energy storage device is an input voltage of the DC-voltage conversion device during discharging the capacitive energy storage device, wherein the input voltage of the capacitive energy storage device is an output voltage of the DC-voltage conversion device while charging the capacitive energy storage device; an interconnection system coupled to the two or more capacitive energy storage modules, wherein the interconnection system connects the anodes and cathodes of the individual energy storage cells to create a common anode and common cathode of the capacitive energy storage module, wherein each individual energy storage cell includes one or more meta-capacitors coupled to a DC-voltage conversion device, wherein the one or more metacapacitors comprise a first and second electrodes and a meta-dielectric material layer disposed between the first and second electrodes, wherein the meta-dielectric material layer is comprised of one or more composite organic compounds characterized by polarizability and resistivity, wherein a relative permittivity of the meta-dielectric material layer is equal to or greater than 100; and a power interconnection system and a system controller coupled to the two or more capacitive energy storage modules. ### Claim 25 (depends on 24) The capacitive energy storage system according to claim 24, wherein system controller includes a deterministic controller, an asynchronous controller, or a controller having distributed clock. ### Claim 26 (depends on 25) The capacitive energy storage system according to claim 25, wherein the distributed clock is used to synchronize several independent DC-voltage conversion devices in one or more of the individual energy storage modules.