WO2015046694A1 - 이차전지의 제조 방법 - Google Patents
이차전지의 제조 방법 Download PDFInfo
- Publication number
- WO2015046694A1 WO2015046694A1 PCT/KR2014/002976 KR2014002976W WO2015046694A1 WO 2015046694 A1 WO2015046694 A1 WO 2015046694A1 KR 2014002976 W KR2014002976 W KR 2014002976W WO 2015046694 A1 WO2015046694 A1 WO 2015046694A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery cell
- dead space
- gas
- tool
- piercing tool
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
-
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/52—Removing gases inside the secondary cell, e.g. by absorption
-
- 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
- H01M50/394—Gas-pervious parts or elements
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a method for manufacturing a secondary battery, and more particularly, to a method for manufacturing a secondary battery capable of preventing contamination of a product due to scattering of an electrolyte by improving a degassing process to prevent scattering of an electrolyte. will be.
- lithium secondary batteries capable of charging and discharging, light weight, high energy density and high output density have been widely used as energy sources of wireless mobile devices.
- hybrid electric vehicles HEVs
- plug-in hybrid electric vehicles PHEVs
- battery electric vehicles BEVs
- EVs battery electric vehicles
- a formation process for activating a positive electrode active material must be preceded essentially during the first cycle.
- a large amount of gas is generated in the battery cell by the formation process. After that, the generated gas is removed through an open or cut opening, and the gas outlet is heat-sealed and sealed again.
- the process of discharging the gas inside the battery cell and heat-sealing the discharge passage is commonly referred to as a degassing process.
- the present invention provides a method for manufacturing a secondary battery that can prevent contamination of a product due to scattering of an electrolyte by preventing scattering of an electrolyte during a degassing process.
- a secondary battery manufacturing method includes generating a gas in a battery cell by performing a formation process on a battery cell including a dead space, and using a piercing tool of a gas removal device. Closing to form a through hole in the dead space and discharging the gas in the battery cell through the piercing tool; closing the sealing tool of the gas removal apparatus after discharging the gas to close the dead space adjacent to the electrode assembly in the battery cell. Fusing the inner side of the opening, opening the piercing tool with the sealing tool closed, and opening the sealing tool after the piercing tool is opened.
- the present invention can prevent the product from being contaminated by the scattering of the electrolyte by preventing the scattering of the electrolyte during the degassing process.
- FIG. 1 is a flow chart for explaining a secondary battery manufacturing method according to an embodiment of the present invention.
- 2 to 7 are schematic views illustrating a secondary battery manufacturing process.
- 8 to 11 are views for explaining the operation of the components of the gas removal apparatus during the degassing process.
- FIG. 12 is a view showing another embodiment of applying a pressure to a battery cell.
- a secondary battery manufacturing method includes generating a gas in a battery cell by performing a formation process on a battery cell including a dead space, and using a piercing tool of a gas removal device. Closing to form a through hole in the dead space and discharging the gas in the battery cell through the piercing tool; closing the sealing tool of the gas removal apparatus after discharging the gas to close the dead space adjacent to the electrode assembly in the battery cell. Fusing the inner side of the opening, opening the piercing tool with the sealing tool closed, and opening the sealing tool after the piercing tool is opened.
- FIG. 1 is a flowchart illustrating a secondary battery manufacturing method according to an embodiment of the present invention.
- 2 to 7 are diagrams schematically illustrating a secondary battery manufacturing process
- FIGS. 8 to 11 are views for explaining operations of components of the gas removing apparatus during the degassing process.
- the electrode assembly 110 to which the electrode terminals 112 and 114 are connected, is mounted on the housing 120 of the battery case 130, and the battery case 130 is folded in half.
- the battery case 130 includes a space (dead space) for collecting and cutting gas generated in a subsequent formation process (formation), one side (the right side in the drawing) is formed much larger than the other sides (S110). ).
- the remaining portions 140 except for one end 150 of the outer circumferential surface of the battery case 130 are provided.
- the electrolyte is injected through the unsealed portion (hereinafter, referred to as a dead space) 150
- the end 152 of one edge of the dead space 150 is thermally fused and charged and discharged as shown in FIG.
- a formation process of activating the battery cell 100 is performed (S120).
- OCV open circuit voltage
- gas is generated inside the battery cell, and the generated gas and surplus electrolyte are collected in the dead space 150 and collected.
- the piercing tool 210 of the gas removing apparatus is closed and perforated on the upper and lower surfaces of the dead space 150 to penetrate the interior of the battery case 130 as shown in FIG. 5.
- a sphere 154 is formed.
- the upper and lower surfaces of the dead space 150 are pulled up and down while the vacuum is applied to the through hole 154 by the piercing tool 210, and the gas and the surplus electrolyte generated in the formation process are passed through the through hole 154. Remove by suction. That is, the gas and the surplus electrolyte are discharged into the vacuum chamber (not shown) through the through hole 154 and the piercing tool 210 by the pressure difference between the inside and the outside of the battery cell 100.
- the cell press 220 is lowered to uniformly press the upper part of the battery cell 100 to apply pressure to the battery cell 100. That is, since the natural discharge of the gas due to the pressure difference alone is limited in discharging the gas, the gas can be discharged more effectively by artificially applying pressure to the battery cell 100.
- the pressure applied to the battery cell 100 is about 5 to 15 kgf /. If necessary, the gas may be discharged by applying only pressure to the battery cell 100 using the cell press 220 without applying a vacuum.
- the sealing tool 230 is closed in a state where the pier room tool 210 is closed (the inside of the battery cell is in a vacuum state) to close the dead space 150 adjacent to the electrode assembly 110. Heat sealing the inner portion 156 of the) to seal the battery cell 110 (S140).
- the piercing tool 210 is first opened in the state in which the sealing tool 230 is closed (S150).
- the electrolyte when the excess electrolyte discharged along with the gas in the degassing process is buried in the piercing tool 230, the electrolyte may be scattered to the surroundings when the piercing tool 230 is opened. In particular, when the electrolyte flies toward the battery cell 100 and is buried in the battery cell 100, it causes contamination of the battery cell 100.
- the electrolyte is scattered by first opening the piercing tool 210 in a state where the sealing tool 230 between the battery cell 100 and the piercing tool 210 is closed as shown in FIG. 10.
- the scattered electrolyte may block the battery cell 100 from being contaminated.
- the cell press 220 since the cell press 220 also covers the battery cell 100 when the piercing tool 210 is opened, the cell press 220 may further block the scattering electrolyte from contaminating the battery cell 100.
- the sealing tool 230 is opened (S160), and the cell press 220 is raised to release the pressure applied to the battery cell 100 (S160). ).
- step S140 the heat-sealed portion 156 is cut in step S140 to remove the remaining dead space 150.
- the pressure is applied to only one side of the battery cell 100 by lowering the cell press 220 after placing the battery cell on the fixed support.
- Pressure may be applied to both sides of the battery cell 100 vertically or horizontally in a state in which a tray 240 having a plate shape is positioned up and down or left and right. Through this, pressure may be applied to the battery cell 100 more uniformly.
- the present invention can prevent the product from being contaminated by the scattering of the electrolyte by preventing the scattering of the electrolyte during the degassing process.
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- 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)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
Description
Claims (9)
- 데드 스페이스를 포함하는 전지셀에 대해 포메이션(formation) 과정을 진행하여 전지셀 내부에 가스를 발생시키는 단계;가스 제거 장치의 피어싱(piercing) 툴을 닫아 상기 데드 스페이스에 관통구를 형성하고 상기 피어싱 툴을 통해 상기 전지셀 내의 가스를 배출시키는 단계;가스 배출 후 가스 제거 장치의 실링(sealing) 툴을 닫아 상기 전지셀 내의 전극 조립체와 인접한 상기 데드 스페이스의 내측부를 융착시키는 단계;상기 실링 툴이 닫혀진 상태에서 상기 피어싱 툴을 개방하는 단계; 및상기 피어싱 툴이 개방된 후 상기 실링 툴을 개방하는 단계를 포함하는 이차전지 제조 방법.
- 제 1항에 있어서,상기 융착된 데드 스페이스 부분을 절단하여 나머지 데드 스페이스 부분을 제거하는 단계를 더 포함하는 것을 특징으로 하는 이차전지 제조 방법.
- 제 1항에 있어서, 상기 가스를 배출시키는 단계는상기 관통구에 진공을 인가하여 상기 전지셀의 내부와 외부의 압력차를 이용하는 것을 특징으로 하는 이차전지 제조 방법.
- 제 3항에 있어서, 상기 가스를 배출시키는 단계는상기 진공을 인가하면서 상기 데드 스페이스의 상면과 하면을 각각 위아래로 잡아당기는 것을 특징으로 하는 이차전지 제조 방법.
- 제 1항에 있어서,상기 가스를 배출시키는 단계는상기 전지셀에 압력을 인가하는 것을 특징으로 하는 이차전지 제조 방법.
- 제 5항에 있어서, 상기 압력을 인가하는 것은상기 전지셀의 일면 또는 양면에 압력을 인가하는 것을 특징으로 하는 이차전지 제조방법.
- 제 1항에 있어서, 상기 전지셀을 실링하는 단계는상기 실링 툴로 상기 데드 스페이스를 열융착시키는 것을 특징으로 하는 이차전지 제조방법.
- 제 1항에 있어서, 상기 데드 스페이스의 내측부를 융착시키는 단계는상기 피어싱 툴이 닫혀진 상태에서 상기 실링 툴을 닫는 것을 특징으로 하는 이차전지 제조방법.
- 제 1항에 있어서, 상기 관통구를 형성하는 단계는상기 피어싱 툴을 이용하여 상기 데드 스페이스의 상면 및 하면에 천공하는 것을 특징으로 하는 이차전지 제조방법.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201480001679.4A CN105453328B (zh) | 2013-09-30 | 2014-04-07 | 二次电池的制造方法 |
| JP2015539519A JP6003007B2 (ja) | 2013-09-30 | 2014-04-07 | 二次電池の製造方法 |
| EP14806157.5A EP2876724B1 (en) | 2013-09-30 | 2014-04-07 | Method of manufacturing secondary battery |
| US14/533,817 US9847547B2 (en) | 2013-09-30 | 2014-11-05 | Method of manufacturing secondary battery |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2013-0116300 | 2013-09-30 | ||
| KR1020130116300A KR101558049B1 (ko) | 2013-09-30 | 2013-09-30 | 이차전지의 제조 방법 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US14/533,817 Continuation US9847547B2 (en) | 2013-09-30 | 2014-11-05 | Method of manufacturing secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015046694A1 true WO2015046694A1 (ko) | 2015-04-02 |
Family
ID=52743789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2014/002976 Ceased WO2015046694A1 (ko) | 2013-09-30 | 2014-04-07 | 이차전지의 제조 방법 |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2876724B1 (ko) |
| JP (1) | JP6003007B2 (ko) |
| KR (1) | KR101558049B1 (ko) |
| CN (1) | CN105453328B (ko) |
| TW (1) | TWI552414B (ko) |
| WO (1) | WO2015046694A1 (ko) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102170026B1 (ko) * | 2015-09-21 | 2020-10-26 | 주식회사 엘지화학 | 저온 특성이 향상된 리튬 이차전지의 제조방법 및 리튬 이차전지 |
| KR102124824B1 (ko) * | 2016-01-07 | 2020-06-19 | 주식회사 엘지화학 | 전지셀 제조방법 및 전지셀의 가스 제거 장치 |
| KR102028082B1 (ko) * | 2016-01-20 | 2019-11-14 | 주식회사 엘지화학 | 전지셀의 가스제거장치 및 방법 |
| KR102177819B1 (ko) * | 2016-02-11 | 2020-11-11 | 주식회사 엘지화학 | 각형 이차전지의 제조 방법 및 제조 장치 |
| KR102244119B1 (ko) * | 2016-02-12 | 2021-04-22 | 주식회사 엘지화학 | 이차 전지 제조 장치 및 이차 전지 제조 방법 |
| KR102181551B1 (ko) * | 2016-07-27 | 2020-11-20 | 주식회사 엘지화학 | 전자기장을 이용하는 전지셀의 제조 방법 |
| KR102092269B1 (ko) * | 2016-12-01 | 2020-03-23 | 주식회사 엘지화학 | 배터리 셀 디가싱 장치 |
| WO2019117558A1 (ko) | 2017-12-15 | 2019-06-20 | 주식회사 엘지화학 | 이차전지의 제조방법 |
| KR102320016B1 (ko) | 2017-12-15 | 2021-11-02 | 주식회사 엘지에너지솔루션 | 이차전지의 제조방법 |
| CN108172921B (zh) * | 2018-01-31 | 2020-11-24 | 河南国能电池有限公司 | 软包电池的抽气方法 |
| CN108808141B (zh) * | 2018-05-31 | 2020-07-07 | 深圳市新浦自动化设备有限公司 | 软包锂电池化成排气的方法 |
| KR102693457B1 (ko) * | 2018-09-20 | 2024-08-07 | 주식회사 엘지에너지솔루션 | 가스배출 탭을 구비한 파우치형 이차전지 및 파우치형 이차전지 디가스 장치 |
| KR101957503B1 (ko) * | 2018-12-26 | 2019-03-12 | 주식회사 티엠프라자 | 진공호퍼 프리챠져 |
| KR102042775B1 (ko) * | 2019-07-02 | 2019-11-08 | (주)하나기술 | 배터리 셀 디가싱 장치 |
| KR102772424B1 (ko) | 2019-08-05 | 2025-02-25 | 주식회사 엘지에너지솔루션 | 이차전지의 가스 제거 장치 및 이를 이용한 가스 제거 방법 |
| KR102851286B1 (ko) * | 2019-12-03 | 2025-08-27 | 주식회사 엘지에너지솔루션 | 이차전지, 이차전지 제조 방법 및 그 이차전지를 포함하는 전지 팩 |
| KR102818592B1 (ko) * | 2020-02-14 | 2025-06-10 | 에스케이온 주식회사 | 배터리 셀의 가스 제거 장치 |
| EP4336635A4 (en) * | 2021-10-06 | 2025-06-04 | LG Energy Solution, Ltd. | METHOD FOR SEALING POCKET-TYPE SECONDARY BATTERY POCKET AND MAIN SEALING TOOL USED IN THIS METHOD |
| KR20240034020A (ko) | 2022-09-06 | 2024-03-13 | 주식회사 엘지에너지솔루션 | 파우치형 전지셀의 포메이션 장치 |
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| KR101334623B1 (ko) * | 2010-12-02 | 2013-11-29 | 주식회사 엘지화학 | 원심력을 이용한 이차전지의 탈기 방법 |
| JP2013149477A (ja) * | 2012-01-19 | 2013-08-01 | Hitachi Maxell Ltd | 非水二次電池の製造方法 |
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2013
- 2013-09-30 KR KR1020130116300A patent/KR101558049B1/ko active Active
-
2014
- 2014-04-07 JP JP2015539519A patent/JP6003007B2/ja active Active
- 2014-04-07 EP EP14806157.5A patent/EP2876724B1/en active Active
- 2014-04-07 WO PCT/KR2014/002976 patent/WO2015046694A1/ko not_active Ceased
- 2014-04-07 CN CN201480001679.4A patent/CN105453328B/zh active Active
- 2014-09-25 TW TW103133292A patent/TWI552414B/zh active
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| See also references of EP2876724A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101558049B1 (ko) | 2015-10-06 |
| EP2876724A1 (en) | 2015-05-27 |
| JP2015536035A (ja) | 2015-12-17 |
| CN105453328B (zh) | 2018-09-14 |
| JP6003007B2 (ja) | 2016-10-05 |
| TW201530844A (zh) | 2015-08-01 |
| KR20150037077A (ko) | 2015-04-08 |
| CN105453328A (zh) | 2016-03-30 |
| EP2876724B1 (en) | 2016-08-24 |
| TWI552414B (zh) | 2016-10-01 |
| EP2876724A4 (en) | 2015-09-16 |
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