WO2022092566A1 - 이차 전지 - Google Patents
이차 전지 Download PDFInfo
- Publication number
- WO2022092566A1 WO2022092566A1 PCT/KR2021/012690 KR2021012690W WO2022092566A1 WO 2022092566 A1 WO2022092566 A1 WO 2022092566A1 KR 2021012690 W KR2021012690 W KR 2021012690W WO 2022092566 A1 WO2022092566 A1 WO 2022092566A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- notch
- cap
- opening
- diameter
- secondary battery
- 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
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- 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
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
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- 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
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
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- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/20—Pressure-sensitive devices
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- 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
- the present invention relates to a secondary battery.
- a secondary battery is a battery that can be charged and discharged, unlike a primary battery that cannot be charged.
- Low-capacity secondary batteries are used in small portable electronic devices such as smart phones, feature phones, notebook computers, digital cameras and camcorders, and high-capacity secondary batteries are batteries for driving motors such as hybrid and electric vehicles and for power storage. etc. are widely used.
- Such lithium ion secondary batteries may be classified into cylindrical, prismatic, and pouch-type secondary batteries in terms of shape.
- a cylindrical lithium ion secondary battery generally includes a cylindrical electrode assembly, a cylindrical case to which the electrode assembly is coupled, an electrolyte injected inside the case to enable movement of lithium ions, and one side of the case It is combined with a cap assembly to prevent leakage of electrolyte, and to prevent separation of the electrode assembly.
- the present invention provides a secondary battery capable of improving safety by easily discharging internal gas.
- a secondary battery according to the present invention includes an electrode assembly; a case accommodating the electrode assembly; and a cap-up coupled to the upper portion of the case and having an opening, a safety vent installed in the lower portion of the cap-up and having a notch that breaks at a set pressure or higher, and installed in the lower portion of the safety vent and electrically connected to the electrode assembly and a cap assembly including a connected cap down, wherein the notch is exposed through the opening.
- the area of the opening may include an inner area positioned inside the notch and an outer area positioned outside the notch with respect to the line in which the notch is formed, and the inner area may be larger than the outer area.
- the inner area may be set to be 55% or more of the total area of the opening.
- the cap-up may include a terminal part protruding upward, a coupling part positioned on an outer periphery of the terminal part and coupled to the safety vent, and a connection part connecting the terminal part and the coupling part, wherein the opening may be formed in the connection part.
- the inner area of the opening may be determined by the diameter of the terminal part and the diameter of the notch.
- the outer area of the opening may be determined by the diameter of the notch and the diameter of the connection part.
- a diameter of the notch may be greater than a diameter of the terminal part and smaller than a diameter of the connection part.
- a gas discharge hole located below the notch may be formed in the cap down.
- a gasket may be further included between the cap assembly and the case.
- the safety vent notch is exposed through the cap-up opening to rapidly discharge internal gas, thereby improving safety.
- FIG. 1 is a cross-sectional view illustrating a secondary battery according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view illustrating a cap assembly in a secondary battery according to an embodiment of the present invention.
- 3 and 4 are views illustrating an inner area and an outer area of the opening according to the position of the notch.
- Space-related terms such as “beneath”, “below”, “lower”, “above”, and “upper” refer to an element or feature shown in the drawing It may be used to facilitate understanding of other elements or features. These space-related terms are for easy understanding of the present invention according to various process conditions or usage conditions of the present invention, and are not intended to limit the present invention. For example, if an element or feature in a figure is turned over, an element or feature described as “below” or “below” becomes “above” or “above”. Accordingly, “lower” is a concept encompassing “upper” or "below”.
- FIG. 1 is a cross-sectional view illustrating a secondary battery according to an embodiment of the present invention.
- a secondary battery 100 may include an electrode assembly 110 , a case 120 , a cap assembly 130 , and a gasket 190 .
- the electrode assembly 110 includes a first electrode 111 and a second electrode 112 , and a separator 113 interposed between the first electrode 111 and the second electrode 112 .
- the electrode assembly 110 may be formed by winding a laminate of the first electrode 111 , the separator 113 , and the second electrode 112 in the form of a jelly-roll.
- the first electrode 111 may act as an anode
- the second electrode 112 may act as a cathode.
- a first electrode tab 114 is connected to the cap assembly 130 at an upper portion of the electrode assembly 110
- a second electrode tab 115 is connected to the lower surface plate 122 of the case 120 at a lower portion of the electrode assembly 110 .
- the first electrode 111 is formed by coating a first electrode active material such as a transition metal oxide on a first electrode current collector formed of a metal foil such as aluminum. A first electrode uncoated region to which the first electrode active material is not applied is formed on the first electrode 111 , and a first electrode tab 114 is attached to the first electrode uncoated region. One end of the first electrode tab 114 is electrically connected to the first electrode 111 , and the other end protrudes above the electrode assembly 110 to be electrically connected to the cap assembly 130 .
- a first electrode active material such as a transition metal oxide
- a metal foil such as aluminum
- the second electrode 112 is formed by coating a second electrode active material such as graphite or carbon on a second electrode current collector formed of a metal foil such as copper or nickel.
- a second electrode uncoated region to which the second electrode active material is not applied is formed on the second electrode 112 , and a second electrode tab 115 is attached to the second electrode uncoated region.
- One end of the second electrode tab 115 is electrically connected to the second electrode 112 , and the other end protrudes below the electrode assembly 110 to be electrically connected to the lower surface plate 122 of the case 120 .
- the separator 113 is positioned between the first electrode 111 and the second electrode 112 to prevent a short circuit and to enable movement of lithium ions.
- the separator 113 may be made of polyethylene, polypropylene, or a composite film of polyethylene and polypropylene.
- the case 120 includes a side plate 121 that is a cylindrical body having a predetermined diameter to form a space in which the electrode assembly 110 is accommodated, and a lower plate 122 that seals the lower portion of the side plate 121 .
- the upper opening of the case 120 is opened to seal after the electrode assembly 110 is inserted.
- a beading portion 123 for preventing the electrode assembly 110 from flowing is formed on the upper portion of the case 120 .
- a crimping part 124 for fixing the cap assembly 130 and the gasket 190 is formed at the uppermost end of the case 120 .
- the crimping part 124 has a gasket 190 interposed therein and is formed to press the cap assembly 130 , and serves to prevent separation of the cap assembly 130 and leakage of the electrolyte.
- FIG. 2 is a cross-sectional view illustrating a cap assembly in a secondary battery according to an embodiment of the present invention.
- the cap assembly 130 includes a cap-up 140 , a safety vent 150 , an insulator 160 , and a cap-down 170 . can do.
- the cap-up 140 is formed in a circular plate body, and includes a terminal part 141 convexly formed in the center, a coupling part 142 positioned on the outer periphery of the terminal part 141, and a coupling part with the terminal part 141 . and a connecting portion 143 connecting the 142 .
- the terminal part 141 protrudes upward compared to the coupling part 142 , and serves as a terminal electrically connected to an external circuit.
- the terminal part 141 is electrically connected to the first electrode tab 114 and may, for example, act as an anode.
- the coupling part 142 is located on the outer periphery of the terminal part 141 , and the safety vent 150 is coupled to the coupling part 142 .
- the vent extension part 153 of the safety vent 150 is coupled to the upper portion of the coupling part 142 .
- the connection part 143 connects the terminal part 141 and the coupling part 142 , and an opening 143a is formed in the connection part 143 .
- a plurality of openings 143a may be formed in the connection part 143 , and provide a path through which gas generated inside the case 120 may be discharged. Also, a portion of the opening 143a may extend to the terminal portion 141 and the coupling portion 142 . In some examples, when the opening 143a extends to the terminal part 141 , the diameter of the terminal part 141 decreases and the area occupied by the opening 143a increases.
- the safety vent 150 is formed of a circular plate body corresponding to the cap-up 140 , and is coupled to a lower portion of the cap-up 140 .
- a protrusion 151 protruding downward is formed in the center of the safety vent 150 .
- the safety vent 150 is electrically connected to the sub-plate 175 fixed to the lower surface of the cap down 170 using the protrusion 151 penetrating the through hole 171 of the cap down 170 .
- the protrusion 151 of the safety vent 150 and the sub-plate 175 may be welded by laser welding, ultrasonic welding, resistance welding, or an equivalent method thereof.
- a notch 152 guiding the breakage of the safety vent 150 is formed on the outer periphery of the protrusion 151 .
- the safety vent 150 discharges the internal gas while blocking the current when an abnormal internal pressure occurs inside the case 120 .
- the protrusion 151 is formed by the gas discharged through the gas discharge hole 172 of the cap down 170 . As it rises, it is electrically separated from the sub-plate 175 . At this time, the sub-plate 175 is electrically separated from the safety vent 150 while the welded portion of the protrusion 151 is torn.
- the safety vent 150 when the internal pressure of the case 120 is greater than or equal to a breaking pressure higher than the operating pressure of the safety vent 150 , the notch 152 is broken to prevent explosion of the secondary battery 100 .
- the safety vent 150 may be formed of aluminum (Al).
- the notch 152 may be formed in a circular shape along the outer periphery of the safety vent 150 .
- the notch 152 may be positioned at a position corresponding to the opening 143a formed in the cap-up 140 , that is, below the opening 143a and exposed to the outside through the opening 143a . That is, the notch 152 may be visually confirmed through the opening 143a from the outside of the secondary battery 100 .
- the opening 143a is positioned on the upper portion of the notch 152 , when the notch 152 is broken by the internal gas, the gas may be rapidly discharged through the opening 143a.
- the safety vent 150 is installed in close contact with the coupling portion 142 at the lower portion of the cap-up 140 .
- the edge of the safety vent 150 is formed to surround the cap-up 140 and extend to the upper portion of the cap-up 140 .
- a portion extending upwardly of the cap-up 140 is defined as a vent extension portion 153 .
- the safety vent 150 may be fixed to the cap-up 140 by welding the upper portion of the vent extension part 153 .
- the insulator 160 is interposed between the safety vent 150 and the cap down 170 to insulate the safety vent 150 and the cap down 170 .
- the insulator 160 is formed in a ring shape and is interposed between the outer periphery of the safety vent 150 and the outer periphery of the cap down 170 .
- the insulator 160 may be formed of a resin material such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), or the like.
- the cap down 170 is formed in a circular plate body.
- a through hole 171 is formed in the center of the cap down 170 , and the protrusion 151 of the safety vent 150 passes through the through hole 171 .
- a gas discharge hole 172 is formed at one side of the cap down 170 , and a sub-plate 175 is coupled to the lower portion of the cap down 170 .
- the gas discharge hole 172 serves to discharge the internal gas when excessive internal pressure is generated inside the case 120 .
- the protrusion 151 of the safety vent 150 may be raised by the gas discharged through the gas discharge hole 172 , and the protrusion 151 may be separated from the sub-plate 175 .
- the sub-plate 175 is welded between the protrusion 151 of the safety vent 150 passing through the through-hole 171 of the cap down 170 and the first electrode tab 114 . Accordingly, the sub-plate 175 may electrically connect the first electrode tab 114 and the safety vent 150 .
- the gas discharge hole 172 may be formed at a position corresponding to the portion in which the notch 152 of the safety vent 150 is formed. Accordingly, a path through which the gas is discharged can be shortened, and thus the gas can be easily discharged.
- the gasket 190 is installed in the upper opening of the case 120 . That is, the gasket 190 is assembled in close contact between the outer periphery of the cap-up 140 and the safety vent 150 and the upper opening of the case 120 .
- the gasket 190 may be formed of a resin material such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), or the like.
- the gasket 190 may electrically insulate between the case 120 and the cap assembly 130 .
- 3 and 4 are views illustrating an inner area and an outer area of the opening according to the position of the notch.
- the opening ( The area of 143a may be divided into an inner area S1 positioned inside the notch 152 and an outer area S2 positioned outside the notch 152 based on the line on which the notch 152 is formed.
- the area of the opening 143a has no inner area and no outer surface. It is made of only the area S2'. That is, the ratio of the inner area to the area of the opening 143a is 0%, and the ratio of the outer area S2' is 100%.
- the inner area S1 of the opening 143a may be determined by the diameter D1 of the terminal 141 of the cap-up 140 and the diameter D2 of the notch 152 .
- the outer area S2 may be determined by the diameter D2 of the notch 152 and the diameter of the connection part 143 .
- the diameter D2 of the notch 152 is larger than the diameter D1 of the terminal portion 141 and smaller than the diameter of the connection portion 143 .
- the inner area S1 may increase as the difference between the diameter D1 of the terminal part 141 and the diameter D2 of the notch 152 increases. Also, as the inner area S1 of the opening 143a increases, that is, as the diameter D2 of the notch 152 increases, the gas inside the secondary battery 100 may be discharged to the outside more quickly.
- thermal diffusion test Passive Propagation Resistance test
- the thermal diffusion test uses multiple secondary batteries to conduct a thermal runaway event in one cell (secondary battery) in an EV/ESS/E-bike constituting a module or pack, which can cause a chain ignition by propagating thermal diffusion to adjacent cells. It is a thermal safety evaluation method that evaluates the degree of influence.
- Comparative Example 1 when the notch diameter D2 is smaller than the terminal diameter D1 and the ratio of the inner area S1 is 0%, all 10 secondary batteries are ignited and a NG determination is received.
- the notch diameter D2 is located inside the opening 143a, and the gas discharged through the notch 142 collides with the terminal part 141, so it is not easy to release the internal gas, so the side of the secondary battery bursts and ignites do.
- the notch diameter (D2) and the terminal diameter (D1) were the same, and when the ratio of the inner area (S1) was 0%, 6 of the 10 secondary batteries were ignited and received a NG determination.
- the ratio of the inner area S1 of the opening 143a is 55% or more, the gas generated inside the secondary battery 100 is rapidly discharged through the opening 143a, It can be seen that the thermal diffusion propagation to the secondary battery 100 can be prevented.
- the present invention relates to a secondary battery.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
| 구분 | 단자부 지름(mm) | 노치 지름(mm) | 외측면적 | 내측면적 | 전체 면적(mm2) | PPR결과 |
| 비율 | 비율 | |||||
| 비교예1 | 9 | 8 | 8.33 | 0 | 8.33 | NG 10/10 |
| 100% | 0% | |||||
| 비교예2 | 9 | 9 | 8.33 | 0 | 8.33 | NG 6/10 |
| 100% | 0% | |||||
| 비교예3 | 9 | 10 | 5.1 | 3.23 | 8.33 | NG 4/10 |
| 61% | 39% | |||||
| 비교예4 | 8.5 | 10 | 5.1 | 4.75 | 9.85 | NG 2/10 |
| 52% | 48% | |||||
| 실시예1 | 8 | 10 | 5.1 | 6.19 | 11.29 | OK 10/10 |
| 45% | 55% | |||||
| 실시예2 | 7.5 | 10 | 5.1 | 7.38 | 12.48 | OK 10/10 |
| 41% | 59% | |||||
| 실시예3 | 6.5 | 10 | 5.1 | 9.49 | 14.59 | OK 10/10 |
| 35% | 65% | |||||
| 실시예4 | 4.85 | 10 | 5.1 | 11.41 | 16.51 | OK 10/10 |
| 31% | 69% |
Claims (9)
- 전극 조립체;상기 전극 조립체를 수용하는 케이스; 및상기 케이스의 상부에 결합되며, 오프닝이 형성된 캡 업과, 상기 캡 업의 하부에 설치되며 설정 압력이상에서 파단되는 노치가 형성된 안전 벤트와, 상기 안전 벤트의 하부에 설치되며 상기 전극 조립체와 전기적으로 연결된 캡 다운을 포함하는 캡 조립체;를 포함하고,상기 노치는 상기 오프닝을 통해 노출되는 것을 특징으로 하는 이차 전지.
- 제 1 항에 있어서,상기 오프닝의 면적은 상기 노치가 형성된 라인을 기준으로 노치의 내측에 위치하는 내측면적과, 노치의 외측에 위치하는 외측면적을 포함하며,상기 내측면적은 상기 외측면적보다 넓은 것을 특징으로 하는 이차 전지.
- 제 2 항에 있어서,상기 내측면적은 상기 오프닝 전체 면적의 55% 이상으로 설정된 것을 특징으로 하는 이차 전지.
- 제 2 항에 있어서,상기 캡 업은 상부로 돌출된 단자부와, 상기 단자부의 외주연에 위치하며 상기 안전 벤트와 결합되는 결합부 및 상기 단자부와 상기 결합부를 연결하는 연결부를 포함하고,상기 오프닝은 상기 연결부에 형성된 것을 특징으로 하는 이차 전지.
- 제 4 항에 있어서,상기 오프닝의 내측면적은 상기 단자부의 지름과 상기 노치의 지름에 의해 결정된 것을 특징으로 하는 이차 전지.
- 제 4 항에 있어서,상기 오프닝의 외측면적은 상기 노치의 지름과 상기 연결부의 지름에 의해 결정된 것을 특징으로 하는 이차 전지.
- 제 4 항에 있어서,상기 노치의 지름은 상기 단자부의 지름보다 크고 상기 연결부의 지름보다 작은 것을 특징으로 하는 이차 전지.
- 제 1 항에 있어서,상기 캡 다운에는 상기 노치의 하부에 위치한 가스 배출공이 형성된 것을 특징으로 하는 이차 전지.
- 제 1 항에 있어서,상기 캡 조립체와 상기 케이스 사이에 위치한 가스켓을 더 포함하는 것을 특징으로 하는 이차 전지.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21886560.8A EP4235929B1 (en) | 2020-10-26 | 2021-09-16 | Secondary battery |
| CN202180073208.4A CN116529940A (zh) | 2020-10-26 | 2021-09-16 | 二次电池 |
| EP25216470.2A EP4697466A3 (en) | 2020-10-26 | 2021-09-16 | Secondary battery |
| US18/247,734 US20230378595A1 (en) | 2020-10-26 | 2021-09-16 | Secondary battery |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2020-0139612 | 2020-10-26 | ||
| KR1020200139612A KR20220055306A (ko) | 2020-10-26 | 2020-10-26 | 이차 전지 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022092566A1 true WO2022092566A1 (ko) | 2022-05-05 |
Family
ID=81382912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2021/012690 Ceased WO2022092566A1 (ko) | 2020-10-26 | 2021-09-16 | 이차 전지 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20230378595A1 (ko) |
| EP (2) | EP4697466A3 (ko) |
| KR (1) | KR20220055306A (ko) |
| CN (1) | CN116529940A (ko) |
| WO (1) | WO2022092566A1 (ko) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE2251549A1 (en) * | 2022-12-22 | 2024-06-23 | Northvolt Ab | A ventilated terminal part for a cylindrical secondary cell |
| SE2251552A1 (en) * | 2022-12-22 | 2024-06-23 | Northvolt Ab | A ventilated terminal arrangement for a cylindrical secondary cell |
| SE2251550A1 (en) * | 2022-12-22 | 2024-06-23 | Northvolt Ab | An aligned ventilated terminal arrangement for a cylindrical secondary cell |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090297927A1 (en) * | 2008-05-30 | 2009-12-03 | Samsung Sdi Co., Ltd. | Cap assembly and secondary battery having the same |
| KR20100041472A (ko) * | 2008-10-14 | 2010-04-22 | 주식회사 엘지화학 | 안전성이 향상된 캡 어셈블리 및 이를 포함하고 있는 원통형 이차전지 |
| KR20120041511A (ko) * | 2010-10-21 | 2012-05-02 | 주식회사 엘지화학 | 캡 조립체 및 이를 이용한 이차 전지 |
| KR20140106328A (ko) * | 2013-02-26 | 2014-09-03 | 주식회사 엘지화학 | 캡 조립체 및 이를 포함하는 이차 전지 |
| KR20160143589A (ko) * | 2015-06-05 | 2016-12-14 | 주식회사 엘지화학 | 이차 전지용 캡 어셈블리 |
| KR20210006202A (ko) * | 2019-07-08 | 2021-01-18 | 삼성에스디아이 주식회사 | 이차 전지 |
| KR102421803B1 (ko) | 2018-05-03 | 2022-07-15 | 주식회사 엘지에너지솔루션 | 이차전지용 캡 조립체 및 이를 포함하는 이차전지 |
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| US8597809B2 (en) * | 2010-02-18 | 2013-12-03 | Samsung Sdi Co., Ltd. | Rechargeable battery |
| KR102161629B1 (ko) * | 2014-02-20 | 2020-10-05 | 삼성에스디아이 주식회사 | 캡 어셈블리 및 이를 포함하는 이차 전지 |
-
2020
- 2020-10-26 KR KR1020200139612A patent/KR20220055306A/ko active Pending
-
2021
- 2021-09-16 WO PCT/KR2021/012690 patent/WO2022092566A1/ko not_active Ceased
- 2021-09-16 US US18/247,734 patent/US20230378595A1/en active Pending
- 2021-09-16 EP EP25216470.2A patent/EP4697466A3/en active Pending
- 2021-09-16 CN CN202180073208.4A patent/CN116529940A/zh active Pending
- 2021-09-16 EP EP21886560.8A patent/EP4235929B1/en active Active
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|---|---|---|---|---|
| US20090297927A1 (en) * | 2008-05-30 | 2009-12-03 | Samsung Sdi Co., Ltd. | Cap assembly and secondary battery having the same |
| KR20100041472A (ko) * | 2008-10-14 | 2010-04-22 | 주식회사 엘지화학 | 안전성이 향상된 캡 어셈블리 및 이를 포함하고 있는 원통형 이차전지 |
| KR20120041511A (ko) * | 2010-10-21 | 2012-05-02 | 주식회사 엘지화학 | 캡 조립체 및 이를 이용한 이차 전지 |
| KR20140106328A (ko) * | 2013-02-26 | 2014-09-03 | 주식회사 엘지화학 | 캡 조립체 및 이를 포함하는 이차 전지 |
| KR20160143589A (ko) * | 2015-06-05 | 2016-12-14 | 주식회사 엘지화학 | 이차 전지용 캡 어셈블리 |
| KR102421803B1 (ko) | 2018-05-03 | 2022-07-15 | 주식회사 엘지에너지솔루션 | 이차전지용 캡 조립체 및 이를 포함하는 이차전지 |
| KR20210006202A (ko) * | 2019-07-08 | 2021-01-18 | 삼성에스디아이 주식회사 | 이차 전지 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE2251549A1 (en) * | 2022-12-22 | 2024-06-23 | Northvolt Ab | A ventilated terminal part for a cylindrical secondary cell |
| SE2251552A1 (en) * | 2022-12-22 | 2024-06-23 | Northvolt Ab | A ventilated terminal arrangement for a cylindrical secondary cell |
| SE2251550A1 (en) * | 2022-12-22 | 2024-06-23 | Northvolt Ab | An aligned ventilated terminal arrangement for a cylindrical secondary cell |
Also Published As
| Publication number | Publication date |
|---|---|
| US20230378595A1 (en) | 2023-11-23 |
| EP4697466A2 (en) | 2026-02-18 |
| EP4235929A4 (en) | 2025-06-25 |
| EP4697466A3 (en) | 2026-02-25 |
| EP4235929A1 (en) | 2023-08-30 |
| KR20220055306A (ko) | 2022-05-03 |
| EP4235929B1 (en) | 2026-03-18 |
| CN116529940A (zh) | 2023-08-01 |
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