WO2023080348A1 - Dispositif et procédé de dégazage de batterie secondaire - Google Patents

Dispositif et procédé de dégazage de batterie secondaire Download PDF

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Publication number
WO2023080348A1
WO2023080348A1 PCT/KR2022/002870 KR2022002870W WO2023080348A1 WO 2023080348 A1 WO2023080348 A1 WO 2023080348A1 KR 2022002870 W KR2022002870 W KR 2022002870W WO 2023080348 A1 WO2023080348 A1 WO 2023080348A1
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WO
WIPO (PCT)
Prior art keywords
case
curved
battery cell
plate
contact
Prior art date
Application number
PCT/KR2022/002870
Other languages
English (en)
Korean (ko)
Inventor
이세용
한상복
김동인
박동길
Original Assignee
(주)엔에스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020220019711A external-priority patent/KR20230067446A/ko
Application filed by (주)엔에스 filed Critical (주)엔에스
Publication of WO2023080348A1 publication Critical patent/WO2023080348A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/105—Pouches or flexible bags
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • Secondary batteries include nickel-cadmium (Ni-Cd) batteries, nickel-hydrogen (Ni-MH) batteries, lithium-metal batteries, lithium-ion (NLi-Ion) batteries, and lithium-ion polymer batteries (Li-Ion Polymer Battery, hereinafter referred to as "LIPB”) and the like.
  • the secondary battery undergoes a degassing process for discharging gas generated by battery activation to the outside of the case.
  • the convex surface of the curved pressing plate is pressed so that the convex surface of the curved pressing plate becomes flat, and the convex surface of the curved pressing plate is sequentially moved from the center to the edge of the battery cell seating area of the case. can make contact.
  • 11 and 12 are views for explaining a curved pressure plate according to another embodiment of the present invention.
  • the area of the convex surface of the curved pressing plate 500 facing the case 110 and the area of the battery cell 120 seating area of the case 110 may be equal to each other. may be
  • the thicknesses of the contact plates 512 and 522 may be different from the central portion of the contact plates 512 and 522 and the edge portion of the contact plates 512 and 522 .
  • the support portions 516 and 526 are connected to the pressure cylinder rod 600, and the contact plates 512 and 522 are pressed by the pressure cylinder rod 600 so that the contact plates 512 and 522 press the case 110. can move in either direction.
  • the support plate 700 and the curved pressure plate 500 are transferred to the battery cell seating area of the case 110, and then the support plate 700 is moved to the battery cell of the case 110.
  • the entire surface of the cell seating area may be contacted, and the convex surface of the curved pressure plate 500 may contact only the central surface of the battery cell seating area of the case 110 .
  • the second curved pressure plate 520 is connected to the contact plate 522 whose concave surface having the second surface curvature contacts the case and the convex surface of the contact plate 522 to apply restoring force to the contact plate 522. It may include an elastic body 528 and a support part 526 supporting the elastic body 528 .
  • the thickness of the contact plates 512 and 522 may be greater than the thickness of the central portion of the contact plates 512 and 522 than the thickness of the edge portion of the contact plates 512 and 522 .
  • the thicknesses of the contact plates 512 and 532 may be different from the central portion of the contact plates 512 and 532 and the edge portions of the contact plates 512 and 532 .
  • a degassing device for a secondary battery includes a piercing unit forming a piercing hole in a case accommodating a battery cell, a sealing unit sealing a case area between the battery cell and the piercing hole, and a case A pressurizing unit for discharging residual gas in the case through a piercing hole by applying pressure toward a battery cell seating area, the pressurizing unit including a curved pressurizing plate having a predetermined surface curvature, and a central portion of convex surfaces of the curved pressurizing plate.
  • the pressure unit may press the curved pressure plate in the direction of the battery cell seating area in an atmospheric pressure atmosphere to discharge residual gas from the case through the piercing hole.
  • the curved pressure plate of the present invention includes a contact plate having a convex surface having a predetermined surface curvature in contact with the case, a moving part connected to both ends of the contact plate and moving in a predetermined direction, a support part supporting the moving part, and a contact plate. It may include an elastic body that is connected to the concave surface of and applies a restoring force to the contact plate.
  • the second curved pressure plate 520 is connected to the contact plate 522 whose concave surface having the second surface curvature contacts the case and the convex surface of the contact plate 522 to apply restoring force to the contact plate 522. It may include an elastic body 528 and a support part 526 supporting the elastic body 528 .
  • the moving parts 514 and 524 are connected to one end of the contact plates 512 and 522 and the support parts 516 and 526, so that one side of the contact plates 512 and 522
  • the first cylinder rod 610 pushes the end in the direction of the case 110 or pulls it in the opposite direction to the case 110, and is connected to the other ends of the contact plates 512 and 522 and the support parts 516 and 526 to make contact. It may include a second cylinder rod 620 that pushes the other ends of the plates 512 and 522 toward the case 110 or pulls them toward the opposite direction of the case 110 .
  • the curved pressing plate 500 includes the first curved pressing plate 510 pressing the first side of the case 110 and the first side of the case 110. It includes a support plate 700 that presses the second side facing the first curved pressure plate 510 and the support plate 700, the battery cell 120 of the case 110, the battery cell 120 is placed in between the case 110 ) can be compressed on both sides.
  • the first curved pressing plate 510 includes a contact plate 512 having a convex surface having a first surface curvature in contact with the case, and a moving part 514 connected to both ends of the contact plate 512 and moving in a predetermined direction. ), a support part 516 supporting the moving part 514, and an elastic body 518 connected to the concave surface of the contact plate 512 and applying a restoring force to the contact plate 512.
  • first surface curvature of the first curved pressing plate 510 may be greater than the second surface curvature of the second curved pressing plate 520 .
  • the elastic body 518 of the first curved pressing plate 510 is located in the central region of the first curved pressing plate 510, and the elastic body 538 of the flat pressing plate 530 is located in the edge region of the flat pressing plate 530. can be located
  • the first and second sealing parts may include a heater generating heat, a sealing bar in which the heater is built in, and a sealing tab attached to the sealing bar to contact the sealing area of the case.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)

Abstract

La présente invention concerne un procédé de dégazage de batterie secondaire permettant d'évacuer efficacement un gaz interne contenu dans un boîtier dans une chambre, comprenant les étapes consistant à : (a) préparer un boîtier dans lequel est logée une cellule de batterie ; (b) former un trou de perçage dans le boîtier ; (c) amener une plaque de pression incurvée, ayant une courbure de surface prédéterminée, en contact avec une zone de charge de cellule de batterie du boîtier ; (d) comprimer la plaque de pression incurvée dans la direction de la zone de charge de cellule de batterie du boîtier de manière à évacuer un gaz interne résiduel contenu dans le boîtier par le trou de perçage ; et (e) fermer hermétiquement la zone de boîtier entre la cellule de batterie et le trou de perçage, à l'étape (d), la plaque de pression incurvée étant comprimée de manière à ce que la surface en saillie de la plaque de pression incurvée devienne plate dans un état dans lequel la partie centrale de la surface en saillie de la plaque de pression incurvée est en contact avec le centre de la zone de charge de cellule de batterie du boîtier, et ainsi la mise en contact de la surface en saillie de la plaque de pression incurvée peut séquentiellement se faire du centre au bord de la zone de charge de cellule de batterie du boîtier.
PCT/KR2022/002870 2021-11-08 2022-02-28 Dispositif et procédé de dégazage de batterie secondaire WO2023080348A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20210152555 2021-11-08
KR10-2021-0152555 2021-11-08
KR10-2022-0019711 2022-02-15
KR1020220019711A KR20230067446A (ko) 2021-11-08 2022-02-15 이차전지의 디개싱 장치 및 방법

Publications (1)

Publication Number Publication Date
WO2023080348A1 true WO2023080348A1 (fr) 2023-05-11

Family

ID=86241716

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2022/002870 WO2023080348A1 (fr) 2021-11-08 2022-02-28 Dispositif et procédé de dégazage de batterie secondaire

Country Status (1)

Country Link
WO (1) WO2023080348A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150072019A (ko) * 2013-12-19 2015-06-29 주식회사 엘지화학 배터리 셀의 디가싱 장치 및 이를 이용한 배터리 셀의 디가싱 방법
KR20180091255A (ko) * 2017-02-06 2018-08-16 주식회사 엘지화학 배터리 셀 제조 장치 및 방법
KR20190059675A (ko) * 2017-11-23 2019-05-31 주식회사 엘지화학 이차전지 가압장치 및 이차전지 제조방법
KR20200025100A (ko) * 2018-08-29 2020-03-10 주식회사 엘지화학 이차전지 제조방법 및 이차전지 디개스 장치
KR20210090459A (ko) * 2020-01-10 2021-07-20 주식회사 엘지에너지솔루션 가스 트랩 제거를 위한 가압 지그 및 이를 이용한 이차전지의 제조방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150072019A (ko) * 2013-12-19 2015-06-29 주식회사 엘지화학 배터리 셀의 디가싱 장치 및 이를 이용한 배터리 셀의 디가싱 방법
KR20180091255A (ko) * 2017-02-06 2018-08-16 주식회사 엘지화학 배터리 셀 제조 장치 및 방법
KR20190059675A (ko) * 2017-11-23 2019-05-31 주식회사 엘지화학 이차전지 가압장치 및 이차전지 제조방법
KR20200025100A (ko) * 2018-08-29 2020-03-10 주식회사 엘지화학 이차전지 제조방법 및 이차전지 디개스 장치
KR20210090459A (ko) * 2020-01-10 2021-07-20 주식회사 엘지에너지솔루션 가스 트랩 제거를 위한 가압 지그 및 이를 이용한 이차전지의 제조방법

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