Patents by Inventor Dae-Sik CHUNG
Dae-Sik CHUNG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11956781Abstract: A method and apparatus of accessing a channel in a wireless local area network is provided. A destination station receives a request to send (RTS) frame to allocate a network allocation vector from a source station over a first bandwidth and transmits a clear to send (CTS) frame over a second bandwidth to the source station in response to the RTS frame. The second bandwidth is dynamically determined when a first parameter has a predetermined value.Type: GrantFiled: December 6, 2020Date of Patent: April 9, 2024Assignee: Electronics and Telecommunications Research InstituteInventors: Il-Gu Lee, Sok-Kyu Lee, Hyun-Kyu Chung, Dae-Sik Kim
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Patent number: 11957046Abstract: An electroluminescent device includes a first electrode and a second electrode facing each other; an emission layer disposed between the first electrode and the second electrode and including a plurality of quantum dots and a first hole transporting material having a substituted or unsubstituted C4 to C20 alkyl group attached to a backbone structure; a hole transport layer disposed between the emission layer and the first electrode and including a second hole transporting material; and an electron transport layer disposed between the emission layer and the second electrode.Type: GrantFiled: September 6, 2019Date of Patent: April 9, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Moon Gyu Han, Dae Young Chung, Kwanghee Kim, Eun Joo Jang, Chan Su Kim, Kun Su Park, Won Sik Yoon
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Publication number: 20230341468Abstract: A method for predicting a lifespan of a battery cell of the present invention includes: virtually dividing a capacity of a battery cell, which is a measurement object for lifespan prediction, into two or more capacity parts, and measuring charge and discharge cycle data for each of the capacity parts; correcting the charge and discharge cycle data by reflecting storage degeneration a positive electrode active material; and predicting a lifespan of the battery cell, based on the corrected charge and discharge cycle data.Type: ApplicationFiled: August 17, 2021Publication date: October 26, 2023Applicant: LG ENERGY SOLUTION, LTD.Inventors: Su Han PARK, Sung Hoon BAE, Dae Sik CHUNG, Young Hwan LEE
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Publication number: 20230076153Abstract: The present invention relates to a method for manufacturing a degenerate cell and a method for evaluating a degenerate cell including the same. The method for manufacturing a degenerate cell includes: preparing a battery cell which has a structure where an electrode assembly, which is generated by lamination of a negative electrode, a positive electrode, and a separator, is accommodated in a battery case, and an electrode lead is drawn out to an outside of the battery case; and precipitating lithium metal on a predetermined region between the negative electrode and the separator by performing charge and discharge under predetermined temperature, pressure and charge and discharge pattern conditions.Type: ApplicationFiled: August 5, 2021Publication date: March 9, 2023Applicant: LG ENERGY SOLUTION, LTD.Inventors: Su Han PARK, Jong Hwa LEE, Ki Woong KIM, Dae Sik CHUNG
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Publication number: 20230045364Abstract: The present technology relates to a battery cell jig including film-type pressure sensors, and a method of measuring a swelling of a battery cell using the same. According to the present invention, by using film-type pressure sensors, the volume of the measuring apparatus can be reduced, and abnormal degeneration of the battery cell by the pressure difference for each location of the battery cell can be prevented.Type: ApplicationFiled: July 30, 2021Publication date: February 9, 2023Applicant: LG ENERGY SOLUTION, LTD.Inventors: Jong Hwa LEE, Dae Sik CHUNG, Su Han PARK
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Patent number: 11335941Abstract: The present disclosure relates to an apparatus and a method for manufacturing a battery cell, and more particularly, to an apparatus and a method for manufacturing a battery cell, wherein a pressing jig provided with a semi-elliptical pressing part presses the battery cell to remove air bubbles from the battery cell.Type: GrantFiled: May 8, 2020Date of Patent: May 17, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Sung Hoon Bae, Seok Je Kim, Dae Sik Chung, Su Han Park
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Patent number: 11307263Abstract: An ESS SOH prediction method includes: a capacity virtual division step of virtually dividing a capacity of a measurement target ESS that is to predict an SOH into two or more capacity ranges; each capacity range-dependent charging/discharging cycle data measurement step of measuring charging/discharging cycle data of each capacity range divided in the capacity virtual division step; and a measurement target ESS SOH prediction step of predicting an SOH of a measurement target ESS based on charging/discharging cycle data of each actual ESS measured in the each capacity range-dependent charging/discharging cycle data measurement step.Type: GrantFiled: March 7, 2019Date of Patent: April 19, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Dae Sik Chung, Jee Ho Kim
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Patent number: 11217812Abstract: A cell taping apparatus includes a plate provided with an accommodation space, into which a plurality of unit cells are configured to be stacked and accommodated, on a top surface thereof; a guide which extends upward from the top surface of the plate to define the accommodation space therein and through which at least one pair of first slots are defined to pass downward from an upper end of the guide at opposing left and right sides of the guide that face each other; and a tape, which has a length equal to or greater than a width of the plate, of which opposing ends respectively pass through a pair of the at least one pair of first slots, and which is seated on the top surface of the plate so that an adhesion surface of the tape faces away from the top surface of the plate.Type: GrantFiled: November 4, 2019Date of Patent: January 4, 2022Inventors: Hye Jin Kim, Sung Hoon Bae, Dae Sik Chung
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Publication number: 20200408848Abstract: An ESS SOH prediction method includes: a capacity virtual division step of virtually dividing a capacity of a measurement target ESS that is to predict an SOH into two or more capacity ranges; each capacity range-dependent charging/discharging cycle data measurement step of measuring charging/discharging cycle data of each capacity range divided in the capacity virtual division step; and a measurement target ESS SOH prediction step of predicting an SOH of a measurement target ESS based on charging/discharging cycle data of each actual ESS measured in the each capacity range-dependent charging/discharging cycle data measurement step.Type: ApplicationFiled: March 7, 2019Publication date: December 31, 2020Applicant: LG CHEM, LTD.Inventors: Dae Sik CHUNG, Jee Ho KIM
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Publication number: 20200266474Abstract: The present disclosure relates to an apparatus and a method for manufacturing a battery cell, and more particularly, to an apparatus and a method for manufacturing a battery cell, wherein a pressing jig provided with a semi-elliptical pressing part presses the battery cell to remove air bubbles from the battery cell.Type: ApplicationFiled: May 8, 2020Publication date: August 20, 2020Applicant: LG CHEM, LTD.Inventors: Sung Hoon BAE, Seok Je KIM, Dae Sik CHUNG, Su Han PARK
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Patent number: 10686208Abstract: The present disclosure relates to an apparatus and a method for manufacturing a battery cell, and more particularly, to an apparatus and a method for manufacturing a battery cell, wherein a pressing jig provided with a semi-elliptical pressing part presses the battery cell to remove air bubbles from the battery cell.Type: GrantFiled: February 2, 2018Date of Patent: June 16, 2020Assignee: LG CHEM, LTD.Inventors: Sung Hoon Bae, Seok Je Kim, Dae Sik Chung, Su Han Park
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Patent number: 10680275Abstract: A charge/discharge pressurizing device includes a first pressurizing jig configured to pressurize one surface of an electrode lead of a battery cell, a second pressurizing jig configured to pressurize an other surface of the electrode lead facing the one surface of the electrode lead, a guide configured to be disposed to be spaced apart from the one surface of the first pressurizing jig by a predetermined distance, and a first pressurizing jig controller configured to be connected to the first pressurizing jig and to move the first pressurizing jig toward the one surface of the electrode lead.Type: GrantFiled: November 5, 2019Date of Patent: June 9, 2020Assignee: LG CHEM, LTD.Inventors: Sung Hoon Bae, Seok Je Kim, Dae Sik Chung, Su Han Park, Dae Geun Gu, Seung Cheol Kim
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Publication number: 20200153030Abstract: A charge/discharge pressurizing device includes a first pressurizing jig configured to pressurize one surface of an electrode lead of a battery cell, a second pressurizing jig configured to pressurize an other surface of the electrode lead facing the one surface of the electrode lead, a guide configured to be disposed to be spaced apart from the one surface of the first pressurizing jig by a predetermined distance, and a first pressurizing jig controller configured to be connected to the first pressurizing jig and to move the first pressurizing jig toward the one surface of the electrode lead.Type: ApplicationFiled: November 5, 2019Publication date: May 14, 2020Applicant: LG CHEM, LTD.Inventors: Sung Hoon BAE, Seok Je KIM, Dae Sik CHUNG, Su Han PARK, Dae Geun GU, Seung Cheol KIM
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Publication number: 20200144650Abstract: A cell taping apparatus includes a plate provided with an accommodation space, into which a plurality of unit cells are configured to be stacked and accommodated, on a top surface thereof; a guide which extends upward from the top surface of the plate to define the accommodation space therein and through which at least one pair of first slots are defined to pass downward from an upper end of the guide at opposing left and right sides of the guide that face each other; and a tape, which has a length equal to or greater than a width of the plate, of which opposing ends respectively pass through a pair of the at least one pair of first slots, and which is seated on the top surface of the plate so that an adhesion surface of the tape faces away from the top surface of the plate.Type: ApplicationFiled: November 4, 2019Publication date: May 7, 2020Applicant: LG Chem, Ltd.Inventors: Hye Jin Kim, Sung Hoon Bae, Dae Sik Chung
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Patent number: 10236703Abstract: Disclosed is an apparatus and method for controlling charge and discharge of a secondary battery. The apparatus for controlling charge and discharge of the secondary battery includes the power control unit calculates an amount of discharging power of the secondary battery, and when voltage value of the secondary battery is less than a preset reference voltage value, outputs a compensation charge control signal to charge the secondary battery with an amount of charging power obtained by adding an amount of power compensation to the calculated amount of discharging power. According to the present disclosure, the problem of a charge amount of the secondary battery reducing gradually with increasing charge and discharge cycles of the secondary battery may be prevented by compensating for the charge amount of the secondary battery.Type: GrantFiled: January 9, 2015Date of Patent: March 19, 2019Assignee: LG CHEM, LTD.Inventors: Dae-Sik Chung, Tae-Shin Cho
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Publication number: 20180226673Abstract: The present disclosure relates to an apparatus and a method for manufacturing a battery cell, and more particularly, to an apparatus and a method for manufacturing a battery cell, wherein a pressing jig provided with a semi-elliptical pressing part presses the battery cell to remove air bubbles from the battery cell.Type: ApplicationFiled: February 2, 2018Publication date: August 9, 2018Inventors: Sung Hoon Bae, Seok Je Kim, Dae Sik Chung, Su Han Park
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Patent number: 9716397Abstract: The present disclosure discloses an apparatus and method for maintaining a charge amount of a secondary battery. The present disclosure reduces a charge amount or increases a discharge amount when a larger charge amount than a required proper charge amount is charged in the secondary battery. Also, the present disclosure reduces a discharge amount or increases a charge amount when a smaller charge amount than a required proper charge amount is charged in the secondary battery. Through this, a proper charge amount may be maintained.Type: GrantFiled: January 24, 2014Date of Patent: July 25, 2017Assignee: LG CHEM, LTD.Inventors: Young-Bo Cho, Tae-Shin Cho, Seoung-Mun Baek, Dae-Sik Chung
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Publication number: 20150288198Abstract: The present disclosure discloses an apparatus and method for maintaining a charge amount of a secondary battery. The present disclosure reduces a charge amount or increases a discharge amount when a larger charge amount than a required proper charge amount is charged in the secondary battery. Also, the present disclosure reduces a discharge amount or increases a charge amount when a smaller charge amount than a required proper charge amount is charged in the secondary battery. Through this, a proper charge amount may be maintained.Type: ApplicationFiled: January 24, 2014Publication date: October 8, 2015Applicant: LG CHEM, LTD.Inventors: Young-Bo Cho, Tae-Shin Cho, Seoung-Mun Baek, Dae-Sik Chung
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Publication number: 20150115715Abstract: Disclosed is an apparatus and method for controlling charge and discharge of a secondary battery. The apparatus for controlling charge and discharge of the secondary battery includes the power control unit calculates an amount of discharging power of the secondary battery, and when voltage value of the secondary battery is less than a preset reference voltage value, outputs a compensation charge control signal to charge the secondary battery with an amount of charging power obtained by adding an amount of power compensation to the calculated amount of discharging power. According to the present disclosure, the problem of a charge amount of the secondary battery reducing gradually with increasing charge and discharge cycles of the secondary battery may be prevented by compensating for the charge amount of the secondary battery.Type: ApplicationFiled: January 9, 2015Publication date: April 30, 2015Applicant: LG CHEM, LTD.Inventors: Dae-Sik CHUNG, Tae-Shin CHO
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Publication number: 20130293006Abstract: A battery balancing system for equalizing charge amounts of a plurality of batteries includes a state measuring unit for measuring states of the plurality of batteries, a controller for outputting a switching control signal including a balancing initiation signal and a balancing termination signal with reference to the state information measured by the state measuring unit, and a switch unit for simultaneously connecting the plurality of batteries to a balancing circuit unit in parallel according to the balancing initiation signal and simultaneously releasing the parallel connection according to the balancing termination signal. Therefore, when balancing charge amounts of a plurality of batteries, it is possible to balance all batteries together by using a simple circuit configuration.Type: ApplicationFiled: May 1, 2013Publication date: November 7, 2013Applicant: LG CHEM, LTD.Inventors: Jung-Soo KANG, Dae-Sik CHUNG