# US 2014/0191728 A1 · High output electrical energy storage device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0191728 A1 - Document ID: US20140191728A1 - Status: Published application - Kind: A1 - Application number: 14/190,011 - Filed: 2014-02-25 - Published: 2014-07-10 - Earliest claimed: 2008-11-26 - Assignees: Kim's Techknowledge Inc. - Applicants: Kim's Techknowledge Inc. - Inventors: Seong Min KIM - Web page: https://patentgrep.com/patent/US20140191728A1 ## CPC - H01G 9/14: Structural combinations {or circuits} for modifying, or compensating for, electric characteristics of electrolytic capacitors - G01R 27/08: Measuring resistance by measuring both voltage and current - G01R 31/382: Arrangements for monitoring battery or accumulator variables, e.g. SoC - H01G 9/008: Terminals - H01G 11/10: Multiple hybrid or EDL capacitors, e.g. arrays or modules (housings, cases, encapsulations or mountings thereof H01G11/78) - H01G 11/14: Arrangements or processes for adjusting or protecting hybrid or EDL capacitors (emergency protective circuit arrangements specially adapted for capacitors, and effecting automatic switching in the event of an undesired change from normal working conditions H02H7/16; emergency protective circuit arrangements for limiting excess current or voltages without disconnection H02H9/00) - H01G 11/74: Terminals, e.g. extensions of current collectors - H01M 10/44: Methods for charging or discharging (circuits for charging H02J7/00) - H01M 10/48: Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) - H02J 7/00: Circuit arrangements for charging or discharging batteries or for supplying loads from batteries - H01G 11/76: specially adapted for integration in multiple or stacked hybrid or EDL capacitors - H01M 50/566: by welding, soldering or brazing - H01M 50/567: by fixing means, e.g. screws, rivets or bolts - Y02E 60/10: Energy storage using batteries - Y02E 60/13: Energy storage using capacitors - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - 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) - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract The present invention relates to an electric energy storage device such as a capacitor, a secondary battery, or the like, and more particularly, to an electric energy storage device capable of improving high output characteristics by using a voltage terminal The electric energy storage device according to an exemplary embodiment of the present invention includes a positive electrode and a negative electrode storing electric energy and a positive current terminal and a negative current terminal connected to the positive electrode and the negative electrode to apply current; and a positive voltage terminal and a negative voltage terminal connected to the positive electrode and the negative electrode to detect voltage across the positive electrode and the negative electrode, wherein the charging or discharging operation is controlled by using the detected voltage across the positive electrode and the negative electrode as control voltage. ## Claims ### Claim 1 An electric energy storage device, comprising: an electrode in which electric energy is stored; a current terminal connected to the electrode and applied with current; and a voltage terminal connected to the electrode and configured to detect a voltage other than a voltage drop component due to a conductor resistance between the electrode and the current terminal ### Claim 2 (depends on 1) The electric energy storage device of claim 1, wherein the voltage terminal is connected to an active material layer of the electrode by using a connection unit ### Claim 3 (depends on 1) The electric energy storage device of claim 1, wherein the voltage terminal is connected to a current collector of the electrode by using a connection unit ### Claim 4 (depends on 1) The electric energy storage device of claim 1, further comprising a connection unit which connects the voltage terminal to the electrode, wherein the connection unit comprises a same material as a material of a current collector of the electrode. ### Claim 5 (depends on 1) The electric energy storage device of claim 1, further comprising a connection unit which connects the voltage terminal to the electrode, wherein the connection unit has a net shape. ### Claim 6 (depends on 1) The electric energy storage device of claim 1, further comprising a connection unit which connects the voltage terminal to the electrode, wherein the connection unit is connected to a portion of the electrode where the voltage terminal and the current terminal are farthest away from each other so that an electric resistance between the voltage terminal and the current terminal has a largest value. ### Claim 7 An electric energy storage device, wherein a plurality of electric energy storage devices each of which includes an electrode in which electric energy is stored; a current terminal connected to the electrode and applied with current; and a voltage terminal connected to the electrode, and the current terminal is connected to another current terminal in series and the voltage terminal is connected to another voltage terminal in series, wherein the detected voltage across the voltage terminal and the another voltage terminal is a voltage other than a voltage drop, wherein the voltage drop comprise: a first voltage drop component due to a conductor resistance between the current terminal and the another current terminal; and a second voltage drop component due to a conductor resistance between the current terminal and the electrode. ### Claim 8 (depends on 7) The electric energy storage device of claim 7, wherein an operation of the electric energy storage device is controlled using voltage detected by the voltage terminals of the electric energy storage devices connected in series.