WO2016137142A1 - 스택-폴딩형 전극 조립체 - Google Patents
스택-폴딩형 전극 조립체 Download PDFInfo
- Publication number
- WO2016137142A1 WO2016137142A1 PCT/KR2016/001341 KR2016001341W WO2016137142A1 WO 2016137142 A1 WO2016137142 A1 WO 2016137142A1 KR 2016001341 W KR2016001341 W KR 2016001341W WO 2016137142 A1 WO2016137142 A1 WO 2016137142A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode assembly
- folding
- stack
- organic
- separator
- Prior art date
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Images
Classifications
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0459—Cells or batteries with folded separator between plate-like electrodes
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- H01M10/04—Construction or manufacture in general
- H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
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- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0583—Construction or manufacture of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with "Z"-shaped electrodes or separators
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- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Definitions
- the present invention relates to a stack-foldable electrode assembly. More particularly, the present invention relates to a stack-foldable electrode assembly that prevents unnecessary volume increase of the electrochemical device and facilitates impregnation of the electrolyte.
- the electrochemical device is the field that is attracting the most attention in this respect, in particular, in accordance with the recent trend of miniaturization and weight reduction of electronic devices, the development of secondary batteries as a battery capable of charging and discharging small size and high capacity has been the focus of attention.
- secondary batteries are classified according to what kind of structure the electrode assembly has a positive electrode / separator / cathode structure.
- a long sheet-shaped positive electrode and negative electrode are wound in a state where a separator is interposed.
- -Roll (electrode) electrode assembly a plurality of positive electrode and negative electrode cut in a predetermined size unit is divided into a stacked (stacked) electrode assembly sequentially stacked with a separator.
- the jelly-roll electrode assembly is wound around the long sheet-like anode and cathode in a dense state to form a cylindrical or oval structure in cross section, stress caused by expansion and contraction of the electrode during charge and discharge accumulates inside the electrode assembly. If the stress accumulation exceeds a certain limit, deformation of the electrode assembly occurs. Deformation of the electrode assembly causes a problem that the spacing between the electrodes is uneven, so that the performance of the battery is drastically degraded and the safety of the battery is threatened due to an internal short circuit. In addition, since the long sheet-type positive electrode and the negative electrode must be wound, it is difficult to quickly wind the coil while keeping the distance between the positive electrode and the negative electrode, which also has a problem in that the productivity is lowered.
- the stack type electrode assembly has to stack a plurality of positive and negative electrode units in sequence, a separate electrode plate transfer process is required separately for manufacturing the unit, and a sequential lamination process requires a lot of time and effort, resulting in low productivity. Has a problem.
- an electrode assembly having a further structure of the jelly-roll type and the stacked type, a bi-cell or a full cell in which a predetermined unit of positive and negative electrodes are laminated with a separator interposed therebetween.
- a stack-folding electrode assembly having a structure in which full cells are wound using a long length of continuous separator sheet has been developed, which is disclosed in Korean Patent Application Publication Nos. 2001-0082058A, 2001-0082059, and 2001. -0082060 and the like.
- FIGS. 1 to 3 are cross-sectional views schematically illustrating a structure of a stack-foldable electrode assembly.
- like numerals mean like members.
- the electrode assembly includes the cathodes 3a, 3b and 3c, the cathodes 1a, 1b and 1c and the anodes 5a, 5b and 5c located on both sides of the separators 3a, 3b and 3c.
- the positive electrodes 5a, 5b and 5c have a structure in which positive electrode active material layers are formed on both surfaces of the positive electrode current collector, and the negative electrodes 1a, 1b and 1c have a structure in which negative electrode active material layers are formed on both sides of the negative electrode current collector. As shown in FIGS.
- the unit cell has a structure of full cells 7a and 7b in which one positive electrode 5a and 5b and one negative electrode 1a and 1b are positioned at both sides of the separators 3a and 3b.
- each unit cell 7a, 7b, 7c 1 , 7c 2 is present in a stacked form.
- the folding separators 9a, 9b, and 9c of H are interposed in various forms as shown in FIGS. 1 to 3 to perform a separator function between the unit cells 7a, 7b, 7c 1 , and 7c 2 .
- the prepared stack-folding electrode assembly is accommodated in a battery case and then injected with an electrolyte to manufacture a battery.
- time is required for the electrolyte to sufficiently infiltrate the separator.
- the electrolyte may not penetrate into the separator may be low wettability, and also there is a risk that the electrolyte that does not penetrate the separator leaks in harsh conditions. Therefore, it is time to devise a method for facilitating electrolyte impregnation in such a stack-folding electrode assembly.
- the folding separator inevitably increases the thickness of the electrode assembly. At this point in time to minimize the volume of the secondary battery, a method for reducing the volume of the electrode assembly is required.
- an object of the present invention is to provide a stack-foldable electrode assembly capable of improving the wettability of the battery and reducing the volume of the electrode assembly.
- the present invention is an electrode assembly of a structure in which a plurality of unit cells are superimposed, each overlapping portion is interposed with a continuous folding separator, the continuous folding separator is a continuous porous having pores A polymer substrate; And an organic-inorganic porous coating layer formed of a mixture of inorganic particles and a binder polymer discontinuously provided in the overlapping portion.
- the organic-inorganic porous coating layer may have a width of the same size as the unit cell.
- the unit cell may have a width greater than 0.2 to 10 mm, more preferably 1.5 to 7.5 mm for the anode, and 0.1 to 9 mm for the cathode, more preferably 1 to 6 mm larger.
- the porous substrate is polyolefin, polyethylene terephthalate, polybutylene terephthalate, polyacetal, polyamide, polycarbonate, polyimide, polyetheretherketone, polyethersulfone, poly It may be formed of at least one selected from the group consisting of phenylene oxide, polyphenylene sulfide and polyethylene naphthalene.
- the inorganic particles may be selected from the group consisting of inorganic particles having a dielectric constant of 5 or more, inorganic particles having lithium ion transfer ability, and mixtures thereof.
- the thickness of the continuous porous substrate of the folding separator may be 1 to 100 ⁇ m.
- the thickness of the discontinuous organic-inorganic porous coating layer of the folding separator may be 0.01 to 20 ⁇ m.
- the folding separator has a unit length to wrap the unit cells, it may be bent for each unit length may be continuously wrapped from the central unit cell to the outermost unit cell. .
- an electrode assembly according to the present invention provides an electrochemical device housed in a case.
- the electrochemical device may be a lithium secondary battery.
- the stack-foldable electrode assembly includes an organic-inorganic porous coating layer only in a region where unit cells overlap with a folding separator, so that unit cells are not overlapped, that is, a porous substrate in a thickness direction portion. Only the presence of the electrolyte can be more easily impregnated after the electrolyte injection.
- the stack-folding electrode assembly includes an organic-inorganic porous coating layer only in a region where unit cells overlap the folding separator, thereby reducing the volume of the electrode assembly by the thickness of the organic-inorganic porous coating layer.
- the volume in the thickness direction of the electrode assembly may be reduced by (thickness of the organic-inorganic coating layer of the folding separator) * (number of unit cells + 1).
- FIG. 1 is a schematic cross-sectional view of one embodiment of a stack-foldable electrode assembly.
- FIG. 2 is a schematic cross-sectional view of another embodiment of a stack-foldable electrode assembly.
- FIG 3 is a schematic cross-sectional view of another embodiment of a stack-foldable electrode assembly.
- FIG. 4 is a cross-sectional view of a folding separator of a conventional stack-foldable electrode assembly.
- FIG. 5 is a schematic diagram illustrating a folding process of a conventional stack-folding electrode assembly.
- FIG. 6 is a cross-sectional view of a folding separator of a stack-foldable electrode assembly according to an embodiment of the present invention.
- FIG. 7 is a schematic diagram illustrating a folding process of a stack-foldable electrode assembly according to an exemplary embodiment of the present invention.
- FIG. 8 is an enlarged view of a portion A of FIG. 5.
- FIG. 9 is an enlarged view of a portion B of FIG. 7.
- FIG. 10 is a view schematically showing the appearance of the electrode assembly before folding of the stack-foldable electrode assembly according to an embodiment of the present invention.
- FIG. 11 is a view schematically illustrating an appearance of an electrode assembly before folding of a stack-foldable electrode assembly according to another exemplary embodiment of the present disclosure.
- the present invention is an electrode assembly having a plurality of unit cells are overlapped, each overlapping portion is a continuous folding separator structure, the continuous folding separator is a continuous porous polymer substrate having pores; And an organic-inorganic porous coating layer formed of a mixture of inorganic particles and a binder polymer discontinuously provided in the overlapping portion.
- the folding separator serves to surround the unit cells.
- Such a stack-foldable electrode assembly is provided with a battery by injecting an electrolyte after it is stored in a battery case, and it is necessary to improve the wettability of the electrolyte for performance and safety of the battery.
- FIGS. 6, 7 and 9 illustrate the stack-foldable electrode assembly of the present invention in relation to a conventional stack-foldable electrode assembly, and the stack-foldable electrode assembly according to an embodiment of the present invention. This will be described with reference to FIGS. 6, 7 and 9.
- the figure shows an embodiment of the electrode assembly according to the present invention, but is not limited thereto.
- FIG. 4 is a cross-sectional view of a folding separator of a conventional stack-folding electrode assembly, and a conventional folding separator is an organic-inorganic porous coating layer formed of a mixture of inorganic particles and a binder polymer on both surfaces of a porous substrate 10 as shown in FIG. 4. 20 is provided.
- a conventional folding separator is an organic-inorganic porous coating layer formed of a mixture of inorganic particles and a binder polymer on both surfaces of a porous substrate 10 as shown in FIG. 4. 20 is provided.
- part A in which unit cells do not overlap, also has a porous substrate and the organic-inorganic porous coating layer (the electrode assembly of FIG. 5).
- the part where F is folded is schematically shown by not showing unit cells).
- the conventional folding separator is modified so that an organic-inorganic porous coating layer formed of a mixture of inorganic particles and a binder polymer is discontinuously provided in the overlapping portion of the unit cells.
- the organic-inorganic porous coating layer 30 formed of a mixture of inorganic particles and a binder polymer on the continuous porous polymer substrate 10 is disposed on both sides of the porous polymer substrate discontinuously.
- the discontinuous coating was used to form the organic-inorganic porous coating layer wherever the unit cells are located.
- FIG. 8 is an enlarged cross-sectional view of part A of FIG. 5
- FIG. 9 is an enlarged cross-sectional view of part B of FIG. 7, wherein the electrode assembly according to FIG. 9 is more impregnated with electrolyte 50 than the electrode assembly shown in FIG. 9.
- the impregnation of the electrolyte may be easier.
- the organic-inorganic coating layer may not be formed in a portion which is not necessary, thereby minimizing the increase in thickness of the electrode assembly due to the presence of the organic-inorganic coating layer.
- the length of b is shorter than a. This thickness reduction may vary from model to model but can be reduced by approximately (thickness of the organic-inorganic coating layer of the folding separator) * (number of unit cells + 1).
- the stack-foldable electrode assembly consisting of a folding separator and 21 bicells having a porous coating layer having a thickness of 10 ⁇ m
- 10 ⁇ m X 22 220 ⁇ m in the thickness direction of the electrode assembly. The thickness can be reduced as much.
- the folding separator according to the present invention allows the organic-inorganic porous coating layer formed of a continuous porous polymer substrate and a mixture of inorganic particles and a binder polymer to be discontinuously formed on both sides of the porous substrate only at positions where unit cells overlap. It is done.
- the organic-inorganic porous coating layer may have a width of the same size as the unit cell.
- the organic-inorganic porous coating layer may have a width of a size slightly larger than that of the unit cell within the limit corresponding to the object of the present invention in consideration of convenience of manufacture / assembly.
- the organic-inorganic porous coating layer has a width of 0.2 to 10 mm, more preferably 1.5 to 7.5 mm, larger than the unit cell anode, and a width of 0.1 to 9 mm, more preferably 1 to 6 mm larger than the cathode. It can be designed to have.
- the above description of the width of the organic-inorganic porous coating layer for each of the anode and the cathode of the unit cell has been described assuming such an embodiment because the size of the anode and the cathode may be designed differently.
- the thickness of the continuous porous substrate may be 1 to 100 ⁇ m.
- the thickness of the discontinuous organic-inorganic porous coating layer may be 0.01 to 20 ⁇ m.
- the porous substrate is polyolefin, polyethylene terephthalate, polybutylene terephthalate, polyacetal, polyamide, polycarbonate, polyimide, polyetheretherketone, polyethersulfone, polyphenylene oxide, polyphenylene sulfide and polyethylene naphthalene It may be formed of at least one selected from the group consisting of, the polyolefin may be any one polymer selected from the group consisting of polyethylene, polypropylene, polybutylene and polypentene.
- the porous substrate may be composed of a layer structure composed of the polymers such as polypropylene / polyethylene / polypropylene.
- the organic-inorganic porous coating layer is attached to each other (that is, the binder polymer is connected and fixed between the inorganic particles) so that the binder polymer can remain in the state in which the inorganic particles are bound to each other, and the organic-inorganic porous coating layer is attached to the binder polymer Thereby to remain bound to the porous substrate.
- Inorganic particles of the organic-inorganic porous coating layer are present in the closest packed structure substantially in contact with each other, the interstitial volume generated when the inorganic particles are in contact with the pores of the organic-inorganic porous coating layer.
- the separator on which the organic-inorganic porous coating layer is formed is excellent in heat resistance, but stability is enhanced, but electrical resistance may increase due to the binder polymer.
- the inorganic particles are not particularly limited as long as they are electrochemically stable. That is, the inorganic particles that can be used in the present invention are not particularly limited as long as the oxidation and / or reduction reactions do not occur in the operating voltage range (for example, 0 to 5 V on the basis of Li / Li + ) of the applied electrochemical device. In particular, in the case of using the inorganic particles having the ion transport ability, it is possible to improve the performance by increasing the ion conductivity in the electrochemical device.
- the inorganic particles when inorganic particles having a high dielectric constant are used as the inorganic particles, the ionic conductivity of the electrolyte may be improved by contributing to an increase in the dissociation degree of the electrolyte salt such as lithium salt in the liquid electrolyte.
- the inorganic particles preferably include high dielectric constant inorganic particles having a dielectric constant of 5 or more, preferably 10 or more, inorganic particles having a lithium ion transfer ability, or a mixture thereof.
- the binder polymer usable in the organic-inorganic porous coating layer is not particularly limited, for example, polyvinylidene fluoride-co-hexafluoropropylene, polyvinylidene fluoride-trichloroethylene (polyvinylidene fluoride-co-trichloroethylene), polymethylmethacrylate, polybutylacrylate, polyacrylonitrile, polyvinylpyrrolidone, polyvinylacetate, Polyvinyl alcohol, ethylene vinyl co-vinyl acetate, polyethylene oxide, polyarylate, cellulose acetate, cellulose acetate butylate butyrate), cellulose acetate Cellulose acetate propionate, cyanoethylpullulan, cyanoethylpolyvinylalcohol, cyanoethylcellulose, cyanoethylsucrose, pullulan , Carboxyl methyl cellulose and low molecular weight compounds having a molecular weight
- composition ratio of the inorganic particles to the binder polymer of the organic-inorganic porous coating layer of the present invention is preferably 10:90 to 99: 1 by weight.
- the general unit cell has a structure in which the layer structure of the anode, the cathode, and the separator are cut into regular shapes and sizes, and then stacked. In this case, all electrodes are coated with an electrode active material based on a current collector.
- This structure is treated as one unit cell for constituting a battery by lamination, and for this purpose, the electrode and the separator must adhere to each other. Obviously, the separator in the unit cell and the folding separator for folding the unit cells are distinguished.
- the unit cell is divided into a full cell and a bicell.
- electrodes at both ends such as anode / separator / cathode or anode / separator / cathode / separator / anode / separator / cathode, may form a positive electrode and a negative electrode, respectively. It means a laminated structure so that.
- the bicell has a structure in which electrodes at both ends are stacked to form the same electrode, and a bipolar cell including a cathode / separator / cathode / separator / anode and a cathode / separator / anode / separator / cathode It is divided into bipolar bicell consisting of.
- the plurality of unit cells may be bonded to one side, alternately, or both sides of one side of the folding separator to form a stack-folding separator by bending or winding the folding separator.
- the electrode according to the present invention is not particularly limited and may be prepared by applying an electrode active material slurry to a current collector according to conventional methods known in the art.
- the positive electrode active material and the negative electrode active material used for the electrode conventional electrode active materials that can be used for the positive electrode and the negative electrode of the conventional electrochemical device may be used.
- the positive electrode active material of the electrode active material it is preferable to use lithium manganese oxide, lithium cobalt oxide, lithium nickel oxide, lithium iron oxide or a lithium composite oxide in combination thereof.
- Non-limiting examples of negative electrode active materials include lithium metal or lithium alloys, soft carbon, hard carbon, natural graphite, Kish graphite, pyrolytic carbon, liquid crystal pitch carbon fiber (mesophase pitch based carbon fiber), meso-carbon microbeads, mesophase pitches, petroleum or coal tar pitch derived cokes and the like are preferable.
- the electrode active material may be added to an organic solvent together with additives such as a binder and a conductive material according to a conventional method in the art to prepare an electrode mixture slurry, and then coated on each electrode current collector to prepare an electrode.
- additives such as a binder and a conductive material according to a conventional method in the art to prepare an electrode mixture slurry, and then coated on each electrode current collector to prepare an electrode.
- the positive electrode current collector aluminum, nickel, and the like may be used, and as a non-limiting example of the negative electrode current collector, copper, gold, nickel, or a copper alloy may be used.
- an electrode assembly may be manufactured using a stack-folding method. Specifically, the folding separator is folded in a direction surrounding the unit cell or the bicell, but folded so as to have a structure in which the unit cell or the bicell is aligned to correspond to each other in a stacked form.
- FIG. 10 uses a full cell
- FIG. 11 uses a bicell.
- the organic-inorganic porous coating layer 30 is formed on both surfaces in a region where the unit cell is disposed on the continuous porous substrate 10.
- the full cells 110, 120, 130 or bicells 210, 220, 230 which are all unit cells, are wrapped by the folding separator 100.
- the folding separator 100 is interposed between the full unit cell or the bicell adjacent to each other, and the full cell or bicell of the unit cell has a stacked structure to correspond to each other in a stacked form (stack-folding).
- the full cells 110 and bicells which are the unit cells after the full cell 110 and the bicell 210, which are the first unit cells illustrated in FIGS. 10 and 11.
- the spacing between the electrodes 220 and 230 should be gradually widened since they correspond to the heights of the cells stacked up to the full cell or the bicell before each unit cell. It should be understood by those skilled in the art that they are shown at uniform intervals for
- the lithium salt that may be included as an electrolyte may be used, without limitation, those which are commonly used in a lithium secondary battery electrolyte, such as the lithium salt, the anion is F -, Cl -, Br - , I -, NO 3 -, N (CN) 2-, BF 4 -, ClO 4 -, PF 6 -, (CF 3) 2 PF 4 -, (CF 3) 3 PF 3 -, (CF 3) 4 PF 2 -, (CF 3) 5 PF -, (CF 3) 6 P -, CF 3 SO 3 -, CF 3 CF 2 SO 3 -, (CF 3 SO 2) 2 N -, (FSO 2) 2 N -, CF 3 CF 2 (CF 3) 2 CO -, (CF 3 SO 2) 2 CH -, (SF 5) 3 C -, (CF 3 SO 2) 3 C -, CF 3 (CF 2) 7 SO 3 -, CF 3 CO 2
- organic solvent included in the electrolyte solution those conventionally used in the electrolyte for lithium secondary batteries may be used without limitation, and typically, propylene carbonate (PC), ethylene carbonate (ethylene carbonate, EC), diethyl carbonate (DEC), dimethyl carbonate (DMC), ethylmethyl carbonate (EMC), methylpropyl carbonate, dipropyl carbonate, dimethylsulfuroxide, acetonitrile, dimethoxyethane, diethoxy Ethylene, vinylene carbonate, sulfolane, gamma-butyrolactone, propylene sulfite, tetrahydrofuran, any one selected from the group consisting of, or a mixture of two or more thereof may be representatively used.
- PC propylene carbonate
- EC ethylene carbonate
- DEC diethyl carbonate
- DMC dimethyl carbonate
- EMC ethylmethyl carbonate
- methylpropyl carbonate dipropy
- ethylene carbonate and propylene carbonate which are cyclic carbonates among the carbonate-based organic solvents, are highly viscous organic solvents, and thus may be preferably used because they dissociate lithium salts in electrolytes well.
- a low viscosity, low dielectric constant linear carbonate, such as carbonate is mixed and used in an appropriate ratio, an electrolyte having high electrical conductivity can be prepared, and thus it can be more preferably used.
- the electrolyte solution stored according to the present invention may further include additives such as an overcharge inhibitor included in a conventional electrolyte solution.
- the battery case used in the present invention may be adopted that is commonly used in the art, there is no limitation on the appearance according to the use of the battery, for example, cylindrical, square, pouch type or coin using a can (coin) type and the like.
- the electrochemical device When the electrode assembly is completed, the electrochemical device may be manufactured by accommodating and sealing the case in a conventional manner.
- the electrochemical device is preferably a lithium secondary battery.
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Abstract
Description
Claims (10)
- 다수의 단위셀들이 중첩되어 있고, 각각의 중첩부에는 연속적인 폴딩 세퍼레이터가 개재되는 구조의 전극조립체이며,상기 연속적인 폴딩 세퍼레이터는 기공들을 가지고 있는 연속적인 다공성 고분자 기재; 및 무기물 입자 및 바인더 고분자의 혼합물로 형성된 유기-무기 다공성 코팅층을 불연속적으로 상기 중첩부 부분에 구비하고 있는 것을 특징으로 하는 스택-폴딩형 전극 조립체.
- 제1항에 있어서,상기 유기-무기 다공성 코팅층은 단위셀과 동일한 크기의 폭을 갖는 것을 특징으로 하는 스택-폴딩형 전극 조립체.
- 제1항에 있어서,상기 유기-무기 다공성 코팅층은 양극에서 단위 셀보다 0.2 내지 10 ㎜내지 7.5㎜ 더 큰 폭을 갖고, 음극에서 단위셀보다 0.1 내지 9 ㎜ 더 큰 폭을 갖는 것을 특징으로 하는 스택-폴딩형 전극 조립체.
- 제1항에 있어서,상기 다공성 기재는 폴리올레핀, 폴리에틸렌테레프탈레이트, 폴리부틸렌테레프탈레이트, 폴리아세탈, 폴리아미드, 폴리카보네이트, 폴리이미드, 폴리에테르에테르케톤, 폴리에테르설폰, 폴레페닐렌옥사이드, 폴리페닐렌설파이드 및 폴리에틸렌나프탈렌으로 이루어진 군으로부터 선택된 적어도 어느 하나로 형성된 것을 특징으로 하는 스택-폴딩형 전극 조립체.
- 제 1항에 있어서,상기 무기물 입자들은 유전율 상수가 5 이상인 무기물 입자, 리튬 이온 전달 능력을 갖는 무기물 입자 및 이들의 혼합물로 이루어진 군으로부터 선택된 것을 특징으로 하는 스택-폴딩형 전극 조립체.
- 제1항에 있어서,상기 폴딩 세퍼레이터의 연속적인 다공성 기재의 두께는 1 내지 100 ㎛인 것을 특징으로 한 것을 스택-폴딩형 전극 조립체.
- 제1항에 있어서,상기 폴딩 세페레이터의 불연속적인 유기-무기 다공성 코팅층의 두께는 0.01 내지 20 ㎛인 것을 특징으로 한 것을 스택-폴딩형 전극 조립체.
- 제1항에 있어서,상기 폴딩 세퍼레이터는 상기 단위셀들을 감쌀 수 있는 단위길이를 가지며, 단위길이마다 꺾여서 중앙 단위셀로부터 시작되어 최외곽의 단위셀까지 연속하여 감싸고 있는 것을 특징으로 하는 스택-폴딩형 전극 조립체.
- 제1항 내지 제8항 중 어느 한 항의 스택-폴딩형 전극 조립체가 케이스에 수납된 전기화학소자.
- 제9항에 있어서,상기 전기화학소자는 리튬 이차전지인 것을 특징으로 하는 전기화학소자.
Priority Applications (6)
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EP16755792.5A EP3163663B1 (en) | 2015-02-27 | 2016-02-05 | Stack-folding typed electrode assembly |
PL16755792T PL3163663T3 (pl) | 2015-02-27 | 2016-02-05 | Zespół elektrod typu składających się w stos |
CN201680002192.7A CN107251269B (zh) | 2015-02-27 | 2016-02-05 | 堆叠-折叠型电极组件 |
BR112017001582-0A BR112017001582B1 (pt) | 2015-02-27 | 2016-02-05 | Conjunto de eletrodos do tipo dobrado em pilha e dispositivo eletroquímico |
JP2017520363A JP6898850B2 (ja) | 2015-02-27 | 2016-02-05 | 積層/折畳み型電極組立体 |
US15/326,222 US10374250B2 (en) | 2015-02-27 | 2016-02-15 | Stack-folding type electrode assembly |
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KR1020150028407A KR101850583B1 (ko) | 2015-02-27 | 2015-02-27 | 스택-폴딩형 전극 조립체 |
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EP (1) | EP3163663B1 (ko) |
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KR (1) | KR101850583B1 (ko) |
CN (1) | CN107251269B (ko) |
BR (1) | BR112017001582B1 (ko) |
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JP2019117703A (ja) * | 2017-12-26 | 2019-07-18 | 株式会社Gsユアサ | 蓄電素子 |
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JP7068644B2 (ja) * | 2017-12-26 | 2022-05-17 | 株式会社Gsユアサ | 蓄電素子 |
EP3859821A4 (en) * | 2018-09-25 | 2021-12-01 | Panasonic Intellectual Property Management Co., Ltd. | NON-AQUEOUS ELECTROLYTE SEPARATOR AND RECHARGEABLE BATTERY |
US20230187706A1 (en) | 2020-10-19 | 2023-06-15 | Lg Energy Solution, Ltd. | Method for Manufacturing Electrode Assembly and Electrochemical Device Including Electrode Assembly |
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Also Published As
Publication number | Publication date |
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TW201703334A (zh) | 2017-01-16 |
KR101850583B1 (ko) | 2018-05-31 |
PL3163663T3 (pl) | 2020-05-18 |
EP3163663A4 (en) | 2017-12-20 |
KR20160105125A (ko) | 2016-09-06 |
US20170207480A1 (en) | 2017-07-20 |
EP3163663B1 (en) | 2019-11-06 |
BR112017001582A2 (pt) | 2017-11-21 |
CN107251269A (zh) | 2017-10-13 |
TWI612709B (zh) | 2018-01-21 |
JP2018508093A (ja) | 2018-03-22 |
US10374250B2 (en) | 2019-08-06 |
JP6898850B2 (ja) | 2021-07-07 |
BR112017001582B1 (pt) | 2022-08-09 |
CN107251269B (zh) | 2020-03-10 |
EP3163663A1 (en) | 2017-05-03 |
BR112017001582A8 (pt) | 2022-08-02 |
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