Patents by Inventor Won-Pill HWANG
Won-Pill HWANG 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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Publication number: 20230343984Abstract: An apparatus for manufacturing a secondary battery is provided. The apparatus comprises a separation sheet supply device configured to supply two separation sheets configured to be disposed vertically. An electrode supply device is configured to supply electrodes to be disposed between the two separation sheets and on a top surface of one of the separation sheets. The one of the separation sheets is disposed at an upper side. A lamination device is configured to bond the two separation sheets and the electrodes to each other. An ultrasonic cutting device is configured to bond surfaces of the two separation sheets to each other and simultaneously cut a bonding surface of the two separation sheets.Type: ApplicationFiled: June 10, 2021Publication date: October 26, 2023Applicant: LG Energy Solution, Ltd.Inventors: Sang Ho Bae, Joo Young Chung, Tae Jong Kim, Sang Woo Lee, Su Taek Jung, Won Pill Hwang, Min Cheol Choi, Jin Gon Kim, Yong Jun Lee
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Publication number: 20230318119Abstract: A secondary battery includes: an electrode assembly; an electrode lead; a battery case with an accommodation portion for the electrode assembly and a sealing portion sealing the accommodation portion; and a lead film. The sealing portion includes a connection-sealing region connected to the accommodation portion, a front end-sealing region, and a reinforcement-sealing region therebetween. The reinforcement-sealing region includes a compressed surface, provided in the sealing portion between the connection-sealing region and the front end-sealing region and recessed into the sealing portion, and raised surfaces, provided in the sealing portion between the connection-sealing region and the compressed surface and between the front end-sealing region and the compressed surface and each of which is formed thicker than the compressed surface. The battery case has a resin layer, a metal layer, and an insulating layer.Type: ApplicationFiled: August 23, 2021Publication date: October 5, 2023Applicant: LG Energy Solution, Ltd.Inventors: Won Pill Hwang, Seung Ho Na, Sang Ho Bae, Kwan Bo Lee, Yoon Beom Lee, Shin Chul Kim, Su Taek Jung, Chang Min Han
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Publication number: 20230207855Abstract: A method for manufacturing a secondary battery includes: an accommodating process of accommodating an electrode assembly in a battery case so that an electrode lead connected to the electrode assembly protrudes to both sides of the outside of the battery case; a sealing process of sealing an outer circumferential surface of the battery case after the accommodating process; a coupling process of coupling a coupling clip to the electrode lead after the sealing process; and a transfer process of transferring the cell to a position for a next process after a gripper grips the coupling clip after the coupling process.Type: ApplicationFiled: May 17, 2021Publication date: June 29, 2023Applicant: LG Energy Solution, Ltd.Inventors: Won Pill Hwang, Sang Woo Lee, Su Taek Jung, Sang Ho Bae, Min Cheol Choi, Jin Gon Kim, Yong Jun Lee
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Publication number: 20230173606Abstract: The present invention provides a sealing process for a secondary battery of the present invention, which thermally fuses and seals a sealing portion that extends along an edge surface of a battery case, the sealing process comprising: an arrangement operation of disposing the sealing portion of the battery case between an anvil and a horn; a first region-fixing operation of pressing and fixing a first region of the sealing portion through the anvil and the horn; and a first region-primary sealing operation of applying an ultrasonic wave to the first region of the sealing portion through the horn at a set frequency and a set amplitude for a set time, thereby thermally fusing the first region of the sealing portion.Type: ApplicationFiled: August 11, 2021Publication date: June 8, 2023Applicant: LG Energy Solution, Ltd.Inventors: Joo Young Chung, Won Pill Hwang, Sang Ho Bae, Su Taek Jung
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Publication number: 20230133623Abstract: A method for repairing a secondary battery according to an embodiment of the present invention for solving the above problems includes: a step, in which cracks are formed in an outer surface of a battery case of the pouch-type secondary battery; a step of locally applying a metal solution to the cracks; and a step of drying the metal solution to form a coating part.Type: ApplicationFiled: April 26, 2021Publication date: May 4, 2023Applicant: LG Energy Solution, Ltd.Inventors: Won Pill Hwang, Sang Woo Lee, Su Taek Jung, Sang Ho Bae, Min Cheol Choi, Jin Gon Kim, Yong Jun Lee
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Patent number: 11557810Abstract: The present invention relates to a battery cell. The battery cell comprises: an electrode assembly provided with an electrode tab; a case which accommodates the electrode assembly and of which at least a portion of an edge is sealed to provide a sealing surface; an electrode lead coupled to the electrode tab and led out of the case; a lead film disposed on each of top and bottom surfaces of the lead electrode disposed on the sealing surface of the case and coupled together with the sealing surface; and a main gas discharge tube disposed in the case and having one end buried in the lead film.Type: GrantFiled: May 26, 2020Date of Patent: January 17, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Cho Long Kim, Yong Su Choi, Sang Hun Kim, Sang Suk Jung, Won Pill Hwang, Yong Kim
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Publication number: 20220200038Abstract: Discussed is method for manufacturing a unit cell in which a certain number of separators and electrodes are alternately stacked, the method including: an adhesive applying operation of continuously providing a lower separator at a relatively lower position and an upper separator at a relatively upper position and applying an adhesive to a surface of at least one separator of the lower separator or the upper separator; an electrode inputting operation of inputting an electrode onto the lower separator; and a stacking operation of positioning and stacking the electrode between the lower separator and the upper separator. The adhesive applied on the at least one separator allows the electrode to be bonded to the at least one separator or allows the other separator to be bonded to the at least one separator, thereby preventing the electrode from moving relative to at least one of the upper and lower separators.Type: ApplicationFiled: November 23, 2020Publication date: June 23, 2022Applicant: LG ENERGY SOLUTION, LTD.Inventors: Sang Ho BAE, Su Taek JUNG, Soon Kwan KWON, Seong Won CHOI, Yong Jun LEE, Sang Woo LEE, Won Pill HWANG, Tae Jong KIM
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Patent number: 11189871Abstract: Provided are a lithium secondary battery, which includes an electrode assembly, a battery case accommodating the electrode assembly, a surface layer comprising an engineering plastic located on the outer side of the battery case, and lead terminals connected with the electrode assembly and drawn out of the battery case, and a method of fabricating the same.Type: GrantFiled: March 28, 2017Date of Patent: November 30, 2021Inventors: Won Pill Hwang, Yong Su Choi, Sang Hun Kim, Sang Suk Jung, Cho Long Kim, Yong Kim
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Patent number: 10804507Abstract: The present disclosure relates to a pouch case for a secondary battery, and a secondary battery comprising the same, and in particular, to a pouch case for a secondary battery fabricated by laminating an inner resin layer, a middle resin layer and an outer resin layer, wherein the inner resin layer comprises a polyolefin-based resin and a thermosetting moisture absorber, and a secondary battery comprising the same.Type: GrantFiled: March 30, 2016Date of Patent: October 13, 2020Assignee: LG Chem, Ltd.Inventors: Hyung Kyun Yu, Sang Hun Kim, Won Pill Hwang, Soo Ji Hwang, Sang Suk Jung
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Patent number: 10777840Abstract: The present invention relates to an apparatus for sealing a secondary battery. The apparatus comprises: a sealing member thermally fusing and sealing a sealing surface of a pouch in which an electrode assembly is accommodated; and a cooling member cooling the sealing surface.Type: GrantFiled: August 26, 2016Date of Patent: September 15, 2020Assignee: LG Chem, Ltd.Inventors: Sang Hun Kim, Yong Su Choi, Sang Suk Jung, Won Pill Hwang, Cho Long Kim, Yong Kim
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Publication number: 20200287186Abstract: The present invention relates to a battery cell. The battery cell comprises: an electrode assembly provided with an electrode tab; a case which accommodates the electrode assembly and of which at least a portion of an edge is sealed to provide a sealing surface; an electrode lead coupled to the electrode tab and led out of the case; a lead film disposed on each of top and bottom surfaces of the lead electrode disposed on the sealing surface of the case and coupled together with the sealing surface; and a main gas discharge tube disposed in the case and having one end buried in the lead film.Type: ApplicationFiled: May 26, 2020Publication date: September 10, 2020Applicant: LG CHEM, LTD.Inventors: Cho Long KIM, Yong Su CHOI, Sang Hun KIM, Sang Suk JUNG, Won Pill HWANG, Yong KIM
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Patent number: 10741822Abstract: Provided is a pouch-type secondary battery that includes an electrode assembly equipped with an electrode tab, an electrode lead connected to the electrode tab, a pouch housing accommodating and sealing the electrode assembly such that the electrode lead is partially exposed, and first and second sealants within the pouch housing. The electrode lead includes a joint portion joined to the electrode tab, a terminal portion exposed to an outside of the pouch housing and a fuse portion between the joint portion and the terminal portion. The fuse portion includes a separating groove and a breaking portion connected to the separating groove for separating the terminal portion from the joint portion. The first sealant and the second sealant have shapes that are different from each other such that, when the pressure inside the secondary battery is increased, a stress applied to the pouch housing causes the breaking portion to break.Type: GrantFiled: May 4, 2016Date of Patent: August 11, 2020Assignee: LG Chem, Ltd.Inventors: Seung-Su Cho, Jung-Jin Kim, Jin-Young Kim, Gi-Su Jeong, Won-Seok Jeong, Seung-Don Choi, Won-Pill Hwang
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Patent number: 10700324Abstract: The present invention relates to a battery cell. The battery cell comprises: an electrode assembly provided with an electrode tab; a case which accommodates the electrode assembly and of which at least a portion of an edge is sealed to provide a sealing surface; an electrode lead coupled to the electrode tab and led out of the case; a lead film disposed on each of top and bottom surfaces of the lead electrode disposed on the sealing surface of the case and coupled together with the sealing surface; and a main gas discharge tube disposed in the case and having one end buried in the lead film.Type: GrantFiled: June 14, 2016Date of Patent: June 30, 2020Assignee: LG CHEM, LTD.Inventors: Cho Long Kim, Yong Su Choi, Sang Hun Kim, Sang Suk Jung, Won Pill Hwang, Yong Kim
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Patent number: 10700321Abstract: The present disclosure provides an electrode lead that ensures safety of a secondary battery when gas is generated within the secondary battery. The electrode lead is included in a pouch-type secondary battery in which outer circumferential parts of a pouch casing are sealed and an electrode assembly is accommodated in a center part of the pouch casing.Type: GrantFiled: June 8, 2016Date of Patent: June 30, 2020Assignee: LG CHEM, LTD.Inventors: Seung-Su Cho, Dong-Hyun Kim, Jin-Young Kim, Gi-Su Jeong, Won-Seok Jeong, Seung-Don Choi, Won-Pill Hwang
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Patent number: 10665836Abstract: A pouch-type secondary battery includes an electrode assembly equipped with an electrode tab, an electrode lead connected to the tab, a pouch housing accommodating and sealing the electrode assembly such that the lead is exposed partly and equipped with a sealing zone at the edge thereof, a first sealant interposed between the top surface of the lead and the inner surface of the housing and a second sealant interposed between the lower surface of the lead and the inner surface of the housing. The lead includes a joint portion joined to the tab, a terminal portion exposed to the outside of the housing and a fuse portion therebetween. The fuse portion includes a separating groove separated from the sealing zone toward the joint portion and including at least a horizontal slit and a breaking portion connected to the separating groove for separating the terminal portion from the joint portion.Type: GrantFiled: May 4, 2016Date of Patent: May 26, 2020Assignee: LG Chem, Ltd.Inventors: Seung-Su Cho, Jin-Young Kim, Gi-Su Jeong, Won-Seok Jeong, Seung-Don Choi, Won-Pill Hwang
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Patent number: 10559785Abstract: The present invention relates to a sealing apparatus sealing a sealing part of a battery case at which an electrode lead coupled to an electrode assembly is disposed. The sealing apparatus comprises: a thermal fusion member applying heat and a pressure to the sealing part of the battery case, at which the electrode lead is disposed, to seal the sealing part; and a temperature rising prevention member supported on a front end of the electrode lead to cool the sealing part through the electrode lead, thereby preventing the sealing part from increasing in temperature.Type: GrantFiled: September 29, 2016Date of Patent: February 11, 2020Assignee: LG Chem, Ltd.Inventors: Cho Long Kim, Yong Su Choi, Sang Hun Kim, Sang Suk Jung, Won Pill Hwang, Yong Kim
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Patent number: 10532423Abstract: Provided is a battery pack. The battery pack includes a plurality of battery cells, each of which is provided with an electrode tab, an electrode lead including first and second lead parts respectively connected to the electrode tabs of the adjacent battery cells and a connection part connecting the first and second lead parts to each other, and a bus bar to which the first and second lead parts are coupled and connecting the plurality of battery cells to each other in series or parallel.Type: GrantFiled: November 1, 2016Date of Patent: January 14, 2020Assignee: LG CHEM, LTD.Inventors: Yong Kim, Yong Su Choi, Sang Hun Kim, Sang Suk Jung, Won Pill Hwang, Cho Long Kim
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Patent number: 10319956Abstract: The present invention relates to a pouch case for a secondary battery and a pouch-type secondary battery comprising the same. More particularly, it relates to a pouch case for a secondary battery comprising an inner resin layer, a metal layer and an outer resin layer, wherein the inner resin layer comprises a porous non-woven fabric support having a plurality of pores and a polymer sealant filled in the pores of the non-woven fabric support; and a secondary battery comprising the same.Type: GrantFiled: November 19, 2015Date of Patent: June 11, 2019Assignee: LG CHEM, LTD.Inventors: Hyung Kyun Yu, Sang Hun Kim, Won Pill Hwang, Soo Ji Hwang, Sang Suk Jung
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Patent number: 10224523Abstract: The present disclosure relates to a secondary battery pouch with an enhanced insulation property, and a method for manufacturing the same, and more specifically, to a secondary battery pouch for preventing occurrence of cracks in a sealing portion of a periphery of a pouch in a completed pouch-type secondary battery, particularly at a folded portion of the sealing portion, and a method for manufacturing the same.Type: GrantFiled: July 31, 2015Date of Patent: March 5, 2019Assignee: LG CHEM, LTD.Inventors: Hyung-Kyun Yu, Sang-Hun Kim, Joo-Sung Lee, Soo-Ji Hwang, Won-Pill Hwang
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Patent number: 10141549Abstract: A pouch case of the present disclosure includes an inner layer, a metallic layer, and an outer layer, wherein the inner layer includes a foaming activator containing an isocyanate-based compound which generates a gas by a foaming agent. Accordingly, since the pouch case includes the inner layer including the foaming activator, when moisture or the like is permeated thereto due to an external factor, a protective gas layer is formed between the inner layer and an electrode assembly in a short time, so that the pouch case and the electrode assembly may be protected, moisture which is permeable into the electrode assembly may be blocked, and separator cracking also may be prevented. Accordingly, explosion which may be caused by moisture permeation, separator cracking, or a short circuit by contact between the pouch case and the electrode assembly, or the like, may be prevented.Type: GrantFiled: October 27, 2015Date of Patent: November 27, 2018Assignee: LG CHEM, LTD.Inventors: Soo Ji Hwang, Sang Hun Kim, Won Pill Hwang, Sang Sok Jung, Hyung Kyun Yu