WO2014133303A1 - 안정성이 향상된 이차전지용 바이셀 및 그 제조방법 - Google Patents
안정성이 향상된 이차전지용 바이셀 및 그 제조방법 Download PDFInfo
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- WO2014133303A1 WO2014133303A1 PCT/KR2014/001538 KR2014001538W WO2014133303A1 WO 2014133303 A1 WO2014133303 A1 WO 2014133303A1 KR 2014001538 W KR2014001538 W KR 2014001538W WO 2014133303 A1 WO2014133303 A1 WO 2014133303A1
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- Prior art keywords
- separator
- edge
- secondary battery
- bicell
- negative electrode
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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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/46—Separators, membranes or diaphragms characterised by their combination with electrodes
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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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
-
- 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
- H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
-
- 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
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- 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
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
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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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
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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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/463—Separators, membranes or diaphragms characterised by their shape
-
- 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
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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
-
- 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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49108—Electric battery cell making
Definitions
- the present invention relates to a secondary battery bicell with improved stability and a method of manufacturing the same, and more particularly to a secondary battery bicell with improved stability capable of reducing the shrinkage of the separator.
- lithium (ion / polymer) secondary batteries have high energy density, high operating voltage, and excellent storage and life characteristics. It is widely used as an energy source for various electronic products as well as devices.
- a lithium secondary battery typically includes an electrode assembly formed by sequentially stacking electrodes and separators, and a case or pouch for accommodating the electrode assembly and the electrolyte.
- the electrode assembly consists of a main unit (unit cell) or bi-cell (bi-cell).
- a bicell in which a positive electrode, a separator, a negative electrode, a separator, and a positive electrode are sequentially stacked and a bicell in which a negative electrode, a separator, a positive electrode, a separator, and a negative electrode are sequentially stacked are disclosed. .
- Such a bicell is formed by alternately arranging electrodes (anode or cathode) and separators and attaching each layer.
- the binder layer is formed on the surface of the electrode and the surface of the separator, the electrode and the separator are attached to each other when heat and pressure are applied to the electrode and the separator, and the bicell may be formed in this manner.
- the separator is mainly formed of a polymer material and has a property of shrinking by heat. Therefore, when heat is applied from the outside of the secondary battery or heat is generated inside the secondary battery, the separator is contracted. As a result, there is a risk that the positive electrode and the negative electrode contact each other, and a short may occur.
- the separator in order to reliably prevent the short circuit of the electrode, the separator must be manufactured considerably larger than the electrode, which in turn increases the volume of the secondary battery.
- the present invention has been conceived to solve the above problems, and an object of the present invention is to provide a secondary battery bicell and a method of manufacturing the same which have improved stability capable of using a small-sized separator as compared with the prior art.
- Another object of the present invention is to provide a secondary battery bicell and a method of manufacturing the same, which are more stable than the prior art, even if a separator of the same size or somewhat smaller size as the prior art is used.
- a bicell for a secondary battery having improved stability includes: the positive electrode and the negative electrode are alternately arranged in a state where the positive electrode is one more layer than the negative electrode or the negative electrode is one more layer than the positive electrode.
- a separator having a larger size than the positive electrode and the negative electrode and insulating the positive electrode and the negative electrode is interposed between the positive electrode and the negative electrode, and the edge of the upper separator and the lower separator facing each other with the positive or negative electrode interposed therebetween. The edges are attached to each other to form a fusion.
- a binder layer is formed on surfaces of the upper separator and the lower separator, and the fusion unit is formed by heating and pressing the edges of the upper separator and the edge of the lower separator with each other.
- the welding portion is formed by applying a heat of 50 ° C. to 100 ° C. and a pressure of 10 gf / cm 2 to 20 gf / cm 2 at the edge of the upper separator and the edge of the lower separator.
- the welding portion is formed by applying heat and pressure to the edge of the upper separator and the edge of the lower separator for 3 to 5 seconds.
- the pressure applied to the edge of the upper separator and the edge of the lower separator to form the fusion portion is lower than the pressure for attaching the positive electrode and the negative electrode to the separator.
- a method of manufacturing a rechargeable bicell for improved stability includes: a positive electrode and a negative electrode so that the positive electrode is one layer more than the negative electrode or the negative electrode is one layer more than the positive electrode Alternately arranging and interposing a separator having a size larger than that of the positive electrode and the negative electrode between the positive electrode and the negative electrode (S10); And attaching an edge of the upper separator and an edge of the lower separator facing each other with an anode or a cathode interposed therebetween to form a fusion portion (S20).
- a binder layer is formed on surfaces of the upper separator and the lower separator, and the step S20 is performed by heating and pressurizing the edge of the upper separator and the edge of the lower separator while making contact with each other.
- the step S20 is performed by applying a heat of 50 ° C ⁇ 100 ° C, and a pressure of 10gf / cm2 ⁇ 20gf / cm2 to the edge of the upper separator and the edge of the lower separator.
- the step S20 is made by applying heat and pressure to the edge of the upper separator and the edge of the lower separator for 3 to 5 seconds.
- the pressure applied to the edge of the upper separator and the edge of the lower separator to form a fusion portion is lower than the pressure for attaching the positive electrode and the negative electrode to the separator.
- a bicell for a secondary battery having improved stability capable of reducing the volume of a secondary battery and a method of manufacturing the same can be provided.
- FIG. 1 is a cross-sectional view of a bicell for a secondary battery, and illustrates a state in which an edge of a separator is not fixed.
- FIG. 2 is a cross-sectional view of a bicell for a secondary battery, in which edges of separators are attached to each other to form a fusion portion.
- FIG. 3 is a block diagram illustrating a method of manufacturing a bicell for a secondary battery according to a preferred embodiment of the present invention.
- FIG. 1 is a cross-sectional view of a secondary battery bicell, and the edges of the separator are not fixed
- FIG. 2 is a cross-sectional view of the secondary battery bicell, and the edges of the separator are attached to each other to form a fusion portion.
- bicell for a secondary battery having improved stability according to a preferred embodiment of the present invention
- the bicell 1 includes a positive electrode 2, a negative electrode 4, and a separator 10 that insulates the positive electrode 2 and the negative electrode 4.
- anode 2 and the cathode 4 are alternately arranged in a state where the anode 2 is one layer more than the cathode 4 or the cathode 4 is one layer more than the anode 2, and the anode 2 ) And a separator 10 having a size larger than that of the negative electrode 4 is interposed between the positive electrode 2 and the negative electrode 4.
- the separator 10 shown in Figs. 1 and 2 will be referred to as the upper separator 12 and the lower separator 14, respectively, according to their positions.
- the bicell 1 according to the preferred embodiment of the present invention is stacked in the order of the anode 2, the upper separator 12, the cathode 4, the lower separator 14, the anode 2, or the cathode 4 ),
- the upper separator 12, the positive electrode 2, the lower separator 14, and the negative electrode 4 may be stacked in this order.
- edges of the upper separator 12 and the edges of the lower separator 14 face each other with the positive electrode 2 or the negative electrode 4 interposed therebetween.
- a fusion portion 16 is formed as shown in FIG. 2.
- FIG. 3 is a block diagram illustrating a method of manufacturing a bicell for a secondary battery according to a preferred embodiment of the present invention.
- the manufacturing method of the bicell according to a preferred embodiment of the present invention comprises the following steps.
- the anode 2 and the cathode 4 are alternately arranged so that the anode 2 is one layer more than the cathode 4 or the cathode 4 is one layer more than the anode 2, and the anode 2 and
- a separator 10 having a size larger than that of the negative electrode 4 is interposed between the positive electrode 2 and the negative electrode 4.
- the bicell 1 according to the preferred embodiment of the present invention shown in FIG. 2 may be manufactured.
- a binder layer is formed on the surfaces of the upper separator 12 and the lower separator 14.
- step S20 when the edge of the upper separator 12 and the edge of the lower separator 14 are heated and pressurized with each other, the binder layers formed on the surfaces of the upper separator 12 and the lower separator 14 are respectively formed. It is fused with each other, and thus the edge of the upper separator 12 and the edge of the lower separator 14 form a fusion portion 16.
- the upper separator 12 and the lower separator 14 may be generally formed of a polyolefin-based material among polymers, and the separator 10 made of the polyolefin-based material has a melting point of about 120 ° C. to 140 ° C., and thus a temperature close to the melting point.
- the edge of the separator 10 can be easily fused.
- the temperature close to the melting point not only the edge of the separator 10 but also the inside of the separator 10 in contact with the electrodes 2 and 4 may be melted.
- the separator 10 is interposed between the electrodes (2, 4) serves to pass ions, when the separator 10 is melted to the inside of the separator 10 in contact with the electrodes (2, 4)
- the fine pores formed in the c) are clogged, and the area through which ions can pass is reduced, resulting in a smaller effective area of the electrodes 2 and 4 used for charging and discharging.
- the separator 10 is not melted at all.
- the fusion portion 16 cannot be formed.
- the heat applied to the edge of the separator 10 is set not to exceed 100 °C to the separator It is preferable to prevent abnormal excessive melting of (10), and when the heat is applied while pressurizing the separator 10, heat is applied to the separator 10 by 50 ° C or more, which is the minimum temperature at which the melting of the separator 10 can occur. It is desirable to prevent the welded portion 16 from being unmolded.
- the process of finishing the electrode assembly manufactured by using the secondary battery bicell may include a process of finishing the edge of the separator using a tape or the like. It is assumed that the electrodes 2 and 4 are rectangular. At this time, the edges of the separator 10 protrude from all four corners of the electrodes 2 and 4, and in order to finish all four corners of the electrode assembly with a tape, the electrode assembly may be arranged in a direction perpendicular to each other. You may need to surround it.
- the narrow area of the edge of the separator is required. It is advantageous.
- the edge of the separator is too flatly pressed, the area of the edge of the separator may increase greatly. Therefore, applying excessively strong pressure to the edge of the separator may impair the finish quality of the separator.
- the area of the edge of the separator 10 can be greatly increased, thereby making it difficult to finish the electrode assembly.
- the pressure applied to the edge of the separator 10 is 10 gf / cm 2 to 20 gf / cm 2. Is preferably.
- the edge of the separator 10 may be formed as the fusion unit 16 by applying heat and pressure for at least seconds.
- the time for applying heat and pressure to the edges of the separator 12 and the lower separator 10 to form the fusion portion 16 is preferably 3 to 5 seconds.
- the edge of the upper separator 12 to form the fusion portion 16 is sufficient to be a pressure of 10 gf / cm 2 to 20 gf / cm 2, so that the pressure of the anode 2 and the cathode 4 to the separator 10 is much lower than that of the pressure applied to the separator 10.
- the fusion portion 16 can be formed.
- FIG. 1 it corresponds to a case where the edges of the separator 10 do not overlap, and when heated at 150 ° C. for 30 minutes, it was confirmed that the shrinkage was 20 to 24%.
- the edges of the separator 10 are overlapped, but they do not adhere to each other, and when heated at 150 ° C. for 30 minutes, it was confirmed that the shrinkage was 16-18%.
- the edges of the separators 10 are attached to each other to form a fusion unit 16, and when heated at 150 ° C. for 30 minutes, the shrinkage of 9 to 12% is confirmed. .
- Bicell (1) according to the invention corresponds to Experimental Example 2
- the prior art corresponds to the comparative example.
- the separator 10 is laminated between the positive electrode 2 and the negative electrode 4 separately, whereas the separator 10 is in a state in which the separator 10 overlaps in two layers. It can be seen that the shrinkage ratio of.
- the separator 10 is overlapped in two layers compared to the state in which the separator 10 is simply overlapped in two layers, and the separator 10 is attached to each other. It can be seen that the shrinkage is further reduced.
- the shrinkage reduction effect due to the overlapping of the separators 10 and the shrinkage reduction effect due to the attachment of the separators 10 are added to the separator 10 as compared to the prior art. Shrinkage is reduced to less than 1/2 is effective.
- the stability of the bicell 1 is improved as compared with the prior art.
- the separator 10 of the same size or somewhat smaller size than the prior art it is possible to manufacture the bicell 1 with improved stability than the prior art.
- the volume of the secondary battery can be reduced.
- the separator 10 having a smaller area may be applied to the bicell 1 as compared with the prior art, the manufacturing cost of the bicell 1 can be reduced.
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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)
- Cell Separators (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
Claims (10)
- 양극이 음극보다 1개층 많거나 음극이 양극보다 1개층 많은 상태로 상기 양극과 음극이 교대로 배치되고,상기 양극과 음극보다 더 큰 사이즈를 가지며 상기 양극과 상기 음극을 절연하는 세퍼레이터가 상기 양극과 상기 음극 사이에 개재되고,양극 또는 음극을 사이에 두고 서로 마주하는 상부 세퍼레이터의 가장자리와 하부 세퍼레이터의 가장자리는 서로 부착되어 융착부를 이루는 것을 특징으로 하는 안정성이 향상된 이차전지용 바이셀.
- 제1항에 있어서,상기 상부 세퍼레이터와 상기 하부 세퍼레이터의 표면에는 바인더 층이 형성되며,상기 융착부는 상기 상부 세퍼레이터의 가장자리와 상기 하부 세퍼레이터의 가장자리를 서로 맞닿게 한 채로 가열 및 가압하는 것에 의하여 형성되는 것을 특징으로 하는 안정성이 향상된 이차전지용 바이셀.
- 제2항에 있어서,상기 융착부는 상기 상부 세퍼레이터의 가장자리와 상기 하부 세퍼레이터의 가장자리에 50℃~100℃의 열과, 10gf/㎠~20gf/㎠의 압력을 가하는 것에 의하여 형성되는 것을 특징으로 하는 안정성이 향상된 이차전지용 바이셀.
- 제3항에 있어서,상기 융착부는 상기 상부 세퍼레이터의 가장자리와 상기 하부 세퍼레이터의 가장자리에 3~5초간 열과 압력을 가하여 형성되는 것을 특징으로 하는 안정성이 향상된 이차전지용 바이셀.
- 제2항 내지 제4항 중 어느 한 항에 있어서,상기 융착부를 형성하기 위하여 상기 상부 세퍼레이터의 가장자리와 상기 하부 세퍼레이터의 가장자리에 가해지는 압력은, 양극 및 음극을 상기 세퍼레이터에 부착하는 압력보다 낮은 것을 특징으로 하는 안정성이 향상된 이차전지용 바이셀.
- 양극이 음극보다 1개층 많거나 음극이 양극보다 1개층 많도록 양극 및 음극을 교대로 배치하고, 상기 양극과 음극보다 더 큰 사이즈의 세퍼레이터를 상기 양극과 음극 사이에 개재하는 단계(S10); 및양극 또는 음극을 사이에 두고 서로 마주하는 상부 세퍼레이터의 가장자리와 하부 세퍼레이터의 가장자리를 서로 부착하여 융착부를 형성하는 단계(S20);를 포함하는 안정성이 향상된 이차전지용 바이셀의 제조방법.
- 제6항에 있어서,상기 상부 세퍼레이터와 상기 하부 세퍼레이터의 표면에는 바인더 층이 형성되며,상기 S20단계는, 상기 상부 세퍼레이터의 가장자리와 상기 하부 세퍼레이터의 가장자리를 서로 맞닿게 한 채로 가열 및 가압하는 것에 의하여 이루어지는 것을 특징으로 하는 안정성이 향상된 이차전지용 바이셀의 제조방법.
- 제7항에 있어서,상기 S20단계는, 상기 상부 세퍼레이터의 가장자리와 상기 하부 세퍼레이터의 가장자리에 50℃~100℃의 열과, 10gf/㎠~20gf/㎠의 압력을 가하는 것에 의하여 이루어지는 것을 특징으로 하는 안정성이 향상된 이차전지용 바이셀의 제조방법.
- 제8항에 있어서,상기 S20단계는, 상기 상부 세퍼레이터의 가장자리와 상기 하부 세퍼레이터의 가장자리에 3~5초간 열과 압력을 가하는 것에 의하여 이루어지는 것을 특징으로 하는 안정성이 향상된 이차전지용 바이셀의 제조방법.
- 제7항 내지 제9항 중 어느 한 항에 있어서,상기 S20단계에서, 융착부를 형성하기 위하여 상기 상부 세퍼레이터의 가장자리와 상기 하부 세퍼레이터의 가장자리에 가해지는 압력은, 양극 및 음극을 상기 세퍼레이터에 부착하는 압력보다 낮은 것을 특징으로 하는 안정성이 향상된 이차전지용 바이셀의 제조방법.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015503143A JP6213850B2 (ja) | 2013-02-26 | 2014-02-26 | 安定性が向上された二次電池用バイセルの製造方法 |
| CN201480002612.2A CN104685691B (zh) | 2013-02-26 | 2014-02-26 | 提高稳定性的二次电池用双电池及其制造方法 |
| EP14756667.3A EP2882026B1 (en) | 2013-02-26 | 2014-02-26 | Stability-improved bi-cell for secondary battery and method for manufacturing same |
| US14/467,542 US9825275B2 (en) | 2013-02-26 | 2014-08-25 | Bi-cell for secondary battery having improved stability and method of preparing the same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020130020254A KR101578265B1 (ko) | 2013-02-26 | 2013-02-26 | 안정성이 향상된 이차전지용 바이셀 및 그 제조방법 |
| KR10-2013-0020254 | 2013-02-26 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US14/467,542 Continuation US9825275B2 (en) | 2013-02-26 | 2014-08-25 | Bi-cell for secondary battery having improved stability and method of preparing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014133303A1 true WO2014133303A1 (ko) | 2014-09-04 |
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| PCT/KR2014/001538 Ceased WO2014133303A1 (ko) | 2013-02-26 | 2014-02-26 | 안정성이 향상된 이차전지용 바이셀 및 그 제조방법 |
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| EP (1) | EP2882026B1 (ko) |
| JP (1) | JP6213850B2 (ko) |
| KR (1) | KR101578265B1 (ko) |
| CN (1) | CN104685691B (ko) |
| TW (1) | TWI521763B (ko) |
| WO (1) | WO2014133303A1 (ko) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6025958B1 (ja) | 2015-11-30 | 2016-11-16 | 住友化学株式会社 | 非水電解液二次電池用セパレータおよびその利用 |
| KR102111105B1 (ko) | 2016-10-10 | 2020-05-14 | 주식회사 엘지화학 | 젖음성이 향상된 이차전지용 단위 셀 및 그 제조방법 |
| WO2018070701A1 (ko) * | 2016-10-10 | 2018-04-19 | 주식회사 엘지화학 | 젖음성이 향상된 이차전지용 단위 셀 및 그 제조방법 |
| CN109860713B (zh) | 2017-11-30 | 2022-03-29 | 宁德新能源科技有限公司 | 电芯、电化学装置及其制造方法 |
| US12224392B2 (en) | 2018-11-19 | 2025-02-11 | Samsung Sdi Co., Ltd. | Electrode assembly and method of manufacturing the same |
| KR102164003B1 (ko) * | 2018-11-19 | 2020-10-12 | 삼성에스디아이 주식회사 | 전극 조립체 및 그의 제조 방법 |
| KR102749027B1 (ko) * | 2019-11-27 | 2025-01-02 | 주식회사 엘지에너지솔루션 | 전극조립체 및 그 제조방법 |
| KR102921538B1 (ko) * | 2020-03-25 | 2026-02-03 | 주식회사 엘지에너지솔루션 | 단위 셀 제조 장치 및 방법 |
| KR102666729B1 (ko) * | 2021-03-22 | 2024-05-16 | 주식회사 엘지에너지솔루션 | 전극 조립체 및 이를 포함하는 이차전지 |
| WO2022204981A1 (zh) * | 2021-03-30 | 2022-10-06 | 宁德新能源科技有限公司 | 电化学装置及用电设备 |
| CN115642369B (zh) * | 2021-07-19 | 2026-03-31 | 惠州锂威新能源科技有限公司 | 一种叠片电池及其制备方法 |
| JP2024543428A (ja) * | 2021-12-24 | 2024-11-21 | エルジー エナジー ソリューション リミテッド | リチウム二次電池および前記リチウム二次電池の製造方法 |
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2013
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-
2014
- 2014-02-26 EP EP14756667.3A patent/EP2882026B1/en active Active
- 2014-02-26 WO PCT/KR2014/001538 patent/WO2014133303A1/ko not_active Ceased
- 2014-02-26 TW TW103106468A patent/TWI521763B/zh active
- 2014-02-26 CN CN201480002612.2A patent/CN104685691B/zh active Active
- 2014-02-26 JP JP2015503143A patent/JP6213850B2/ja active Active
- 2014-08-25 US US14/467,542 patent/US9825275B2/en active Active
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| JPH0636781A (ja) * | 1992-07-17 | 1994-02-10 | Ishikawajima Harima Heavy Ind Co Ltd | 燃料電池 |
| JPH087859A (ja) * | 1994-06-21 | 1996-01-12 | Matsushita Electric Ind Co Ltd | 偏平形電池およびその製造方法 |
| US6077624A (en) * | 1997-08-14 | 2000-06-20 | Valence Technology, Inc. | Lithium ion cells with improved thermal stability |
| KR20070073169A (ko) * | 2006-01-04 | 2007-07-10 | 주식회사 엘지화학 | 분리막 상단이 밀봉되어 있는 전극조립체 및 이를 포함하는이차전지 |
| KR20080095770A (ko) | 2007-04-24 | 2008-10-29 | 주식회사 엘지화학 | 이종의 세퍼레이터를 구비한 전기화학소자 |
| KR20120046091A (ko) * | 2010-11-01 | 2012-05-09 | 주식회사 아모그린텍 | 전극 조립체 및 이를 이용한 이차 전지와 그의 제조방법 |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2882026A1 (en) | 2015-06-10 |
| CN104685691A (zh) | 2015-06-03 |
| US9825275B2 (en) | 2017-11-21 |
| EP2882026B1 (en) | 2016-08-17 |
| JP2015511764A (ja) | 2015-04-20 |
| KR101578265B1 (ko) | 2015-12-16 |
| JP6213850B2 (ja) | 2017-10-18 |
| CN104685691B (zh) | 2017-05-03 |
| US20140363729A1 (en) | 2014-12-11 |
| KR20140106123A (ko) | 2014-09-03 |
| TWI521763B (zh) | 2016-02-11 |
| TW201505230A (zh) | 2015-02-01 |
| EP2882026A4 (en) | 2015-07-22 |
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