Energy storage cell, capacitive energy storage module, and capacitive energy storage system

Patent metadata

Field	Value
Publication number	US-2017237271-A1
Application number	US-201615043315-A
Country	US
Kind code	A1
Filing date	Feb 12, 2016
Priority date	Feb 12, 2016
Publication date	Aug 17, 2017
Grant date	—

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.

First claim

What is claimed is:

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 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.

2 . The energy storage cell of claim 1 , wherein the one or more meta-capacitors each include 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.

3 . The energy storage cell of claim 2 , wherein a resistivity of the meta-dielectric material layer is equal to or greater than 10 13 ohm/cm.

4 . The energy storage cell of claim 2 , wherein a relative permittivity of the meta-dielectric material layer is equal to or greater than 100.

5 . The energy storage cell of claim 2 , wherein the meta-dielectric material layer includes one or more types of Sharp polymers and/or one or more types of Furuta polymers.

6 . The energy storage cell of claim 5 , 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.

7 . The energy storage cell of claim 5 , 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.

8 . The energy storage cell of any one of claims 1 - 7 , wherein said one or more meta-capacitors have a breakdown field greater than or equal to about 0.01V/nm.

9 . 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.

10 . The energy storage cell according to claim 9 , wherein the cooling mechanism is a passive cooling mechanism, or wherein air, water or ethylene glycol can be used as a coolant.

11 . The energy storage cell according to claim 9 , 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.

12 . The energy storage cell according to claim 9 , wherein the cooling mechanism includes a reservoir containing a solid to liquid phase change material.

13 . The energy storage cell according to claim 12 , wherein the solid to liquid phase change material is paraffin wax.

14 . 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, (uk converter, single-ended primary inductor converter (SEPIC), inverting buck/boost converter, or four-switch buck/boost converters.

15 . The energy storage cell according to claim 14 , 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).

16 . The energy storage cell according to claim 15 , wherein the constant output voltage of the energy storage cell is programmable by the control board.

17 . The energy storage cell according to claim 15 , 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, (uk converter, single-ended primary inductor converter (SEPIC), inverting buck/boost converter, or four-switch buck/boost converters

18 . The energy storage cell according to claim 15 , 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.

19 . The energy storage cell according to claim 15 , 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.

20 . 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.

21 . The energy storage cell according to claim 20 , wherein the power electronics switches comprise multiple switch elements stacked in series.

22 . 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 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.

23 . The energy storage module of claim 22 , wherein the interconnection system includes a parameter bus connected to the two or more individual energy storage cells by power switches.

24 . The energy storage module of claim 22 , further comprising a power meter coupled to two or more individual energy storage cells.

25 . The energy storage module of claim 22 , further comprising a networked control node coupled to the two or more individual energy storage cells.

26 . 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 mor

Assignees

• Capacitor Sciences Inc

Inventors

• Kelly-Morgan Ian
• Robinson Matthew R
• Furuta Paul
• Membreno Daniel
• Lazarev Pavel Ivan

Classifications

• H02J7/933

  the cycle being controlled or terminated in response to electric parameters · CPC title

• H02J7/751

  concerning the insertion or the connection of the batteries · CPC title

• H02J7/56

  Active balancing, e.g. using capacitor-based, inductor-based or DC-DC converters · CPC title

• H02J7/585 Primary

  Sequential battery discharge in systems with a plurality of batteries · CPC title

• H02J2207/20

  Charging or discharging characterised by the power electronics converter · CPC title