# US 11,444,487 B2 · Wireless charge/discharge flexible energy storage devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,444,487 B2 - Document ID: US11444487B2 - Status: Granted - Kind: B2 - Application number: 16/765,919 - Filed: 2018-11-21 - Published: 2020-11-19 - Granted: 2022-09-13 - Earliest claimed: 2017-11-21 - Assignees: North Carolina Agricultural and Technical State University - Applicants: North Carolina Agricultural and Technical State University - Inventors: Sungjin Cho; Pankaj Kumar Alaboina - Web page: https://patentgrep.com/patent/US11444487B2 ## CPC - H02J 50/10: using inductive coupling - H01M 10/0436: {Small-sized flat cells or batteries for portable equipment} - H01M 10/0463: {Cells or batteries with horizontal or inclined electrodes} - H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)} - H01M 10/4257: {Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries} - H01M 10/44: Methods for charging or discharging (circuits for charging H02J7/00) - H01M 10/46: Accumulators structurally combined with charging apparatus (circuits for charging H02J7/00) - H02J 7/70: characterised by the mechanical construction - H01M 2220/30: Batteries in portable systems, e.g. mobile phone, laptop - Y02E 60/10: Energy storage using batteries - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract The presently disclosed subject matter relates generally to a wireless charge-discharge (WCD) energy storage device that includes an anode element, a cathode element that is proximately positioned to the anode element, a receiver coil element concentrically encircling each of the anode element and the cathode element, and a transmitter coil element concentrically encircling each of the receiver coil element, the anode element, and the cathode element. The WCD storage device further includes a switch element that i) when set to a first position establishes a connection between the transmitter coil element and the cathode element that permits the transmitter coil to generate a magnetic field and ii) when set to a second position prevents the connection between the transmitter coil element and the cathode element such that the receiver coil element is configured carry an induced current when the receiver coil element is positioned within a magnetic field. ## Claims ### Claim 1 A wireless charge-discharge (WCD) energy storage device, comprising: an anode element; a cathode element that is proximately positioned to the anode element; a receiver coil element concentrically encircling each of the anode element and the cathode element; a transmitter coil element concentrically encircling each of the receiver coil element, the anode element, and the cathode element; and a switch element that i) when set to a first position establishes a connection between the transmitter coil element and the cathode element that permits the transmitter coil element to generate a magnetic field and ii) when set to a second position prevents the connection between the transmitter coil element and the cathode element such that the receiver coil element is configured to carry an induced current when the receiver coil element is positioned within a magnetic field; wherein the anode element, the cathode element, the receiver coil element, the transmitter coil element and the switch element are completely contained within an encapsulating film container. ### Claim 2 (depends on 1) The WCD energy storage device of claim 1, wherein the magnetic field generated by the transmitter coil element is created by an electrical current produced by the anode element and received by the cathode element via the transmitter coil element. ### Claim 3 (depends on 1) The WCD energy storage device of claim 1, wherein a space between the anode element and the cathode element is filled by an electrolyte solution. ### Claim 4 (depends on 1) The WCD energy storage device of claim 1, wherein the magnetic field generated by the transmitter coil element is used to wirelessly induce an electrical current that provides power to charge a battery unit contained within a receiving wireless device. ### Claim 5 (depends on 1) The WCD energy storage device of claim 1, wherein each of the transmitter coil element and the receiver coil element comprises a flexible coil element. ### Claim 6 (depends on 1) The WCD energy storage device of claim 1, wherein the cathode element includes an extended cathode contact and the anode element includes an extended anode contact. ### Claim 7 (depends on 1) The WCD energy storage device of claim 1, wherein the anode element and the cathode element comprise flexible electrode components and the encapsulating film container comprises a flexible packaging material. ### Claim 8 (depends on 7) The WCD energy storage device of claim 7, wherein a connection between the receiver coil element and at least one of an extended cathode contact and an extended anode contact is direct and is established completely within the encapsulating film container. ### Claim 9 (depends on 8) The WCD energy storage device of claim 8, wherein a connection between the transmitter coil element and at least one of the extended cathode contact and the extended anode contact is direct and is established completely within the encapsulating film container. ### Claim 10 A wireless charge-discharge (WCD) energy storage device, comprising: an integrated cathode element that includes a receiver coil element embedded within a planar cathode element, wherein the integrated cathode element includes an extended cathode contact; an integrated anode element that includes a transmitter coil element embedded within a planar anode element, wherein the integrated anode element includes an extended anode contact; and a switch element that i) when set to a first position establishes an electrical connection between the transmitter coil element and the extended cathode contact that permits the transmitter coil element to generate a magnetic field and ii) when set to a second position prevents the electrical connection between the transmitter coil element and the extended cathode contact such that the receiver coil element is configured to carry an induced current when the receiver coil element is positioned within a magnetic field; wherein the integrated anode element and the integrated cathode element, are completely contained within an encapsulating film container. ### Claim 11 (depends on 10) The WCD energy storage device of claim 10, wherein the receiver coil element is coaxially embedded with the planar cathode element. ### Claim 12 (depends on 10) The WCD energy storage device of claim 10, wherein the transmitter coil element is coaxially embedded with the planar anode element. ### Claim 13 (depends on 10) The WCD energy storage device of claim 10, wherein the magnetic field generated by the transmitter coil element is created by an electrical current produced by the planar anode element and received by the planar cathode element via the transmitter coil element. ### Claim 14 (depends on 10) The WCD energy storage device of claim 10, wherein a space between the integrated anode element and the integrated cathode element is filled by an electrolyte solution. ### Claim 15 (depends on 10) The WCD energy storage device of claim 10, wherein the magnetic field generated by the transmitter coil element is used to wirelessly induce an electrical current that provides power to charge a battery unit contained within a receiving wireless device. ### Claim 16 (depends on 10) The WCD energy storage device of claim 10, wherein the integrated anode element and the integrated cathode element comprise flexible electrode components and the encapsulating film container comprises a flexible packaging material. ### Claim 17 (depends on 16) The WCD energy storage device of claim 16, wherein a connection between the receiver coil element and at least one of the extended cathode contact and the extended anode contact is direct and is established completely within the encapsulating film container. ### Claim 18 (depends on 17) The WCD energy storage device of claim 17, wherein a connection between the transmitter coil element and at least one of the extended cathode contact and the extended anode contact is direct and is established completely within the encapsulating film container.