WO2018088722A1 - 전극 조립체 및 그 제조방법 - Google Patents
전극 조립체 및 그 제조방법 Download PDFInfo
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- WO2018088722A1 WO2018088722A1 PCT/KR2017/011780 KR2017011780W WO2018088722A1 WO 2018088722 A1 WO2018088722 A1 WO 2018088722A1 KR 2017011780 W KR2017011780 W KR 2017011780W WO 2018088722 A1 WO2018088722 A1 WO 2018088722A1
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- folding
- unit cell
- separation film
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- electrode assembly
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
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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
- 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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- 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
- H01M10/0583—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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- 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
- H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
- H01M50/474—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by their position inside the cells
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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
- H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
- H01M50/477—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by their shape
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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
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/42—Grouping of primary cells into batteries
- H01M6/46—Grouping of primary cells into batteries of flat cells
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
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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
- H01M50/46—Separators, membranes or diaphragms characterised by their combination with electrodes
- H01M50/461—Separators, membranes or diaphragms characterised by their combination with electrodes with adhesive layers between electrodes and separators
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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
- 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 an electrode assembly and a method of manufacturing the same.
- Secondary batteries unlike primary batteries, can be recharged and have been researched and developed in recent years due to the possibility of miniaturization and large capacity. As technology development and demand for mobile devices increase, the demand for secondary batteries as an energy source is rapidly increasing.
- Secondary batteries are classified into coin-type batteries, cylindrical batteries, square batteries, and pouch-type batteries according to the shape of the battery case.
- the electrode assembly mounted inside the battery case is a power generator capable of charging and discharging having a stacked structure of electrodes and separators.
- the electrode assembly is a jelly-roll type wound by separating a separator between a sheet-shaped anode and a cathode coated with an active material, and a stack type in which a plurality of anodes and cathodes are sequentially stacked with a separator therebetween. , And stacked unit cells can be roughly classified into a stack / fold type wound with a long length of separation film.
- the double jelly roll type electrode assembly is widely used because it has the advantage of being easy to manufacture and having a high energy density per weight.
- One aspect of the present invention is to provide an electrode assembly and a method of manufacturing the same, which prevents the release of the separation film when the plurality of unit cells are formed by folding the separation film and the electrode is not exposed.
- An electrode assembly according to an embodiment of the present invention is folded to be positioned between a plurality of unit cells each including at least one anode, at least one cathode, at least one separator and a plurality of unit cells.
- the separation film may include a separation film, and the separation film may be provided in a folded form two or more times so as to surround and contact the first unit cell located at the beginning of the separation film among the plurality of unit cells.
- the electrode assembly manufacturing method at least one positive electrode, at least one negative electrode, a plurality of unit cells and a separation film each comprising at least one separator and the preparation process for preparing a plurality of And a seating process of seating the unit cells on one surface of the separation film, and a folding process of sequentially folding the separation film on which the plurality of unit cells are seated so that the separation film is positioned between a plurality of unit cells.
- the separation film may be folded two or more times so as to surround the first unit cell positioned at the beginning of the separation film among the plurality of unit cells.
- the separation of the separation film surrounding the unit cell located at the beginning of the separation film is prevented, and the electrode is formed in a shape that does not expose
- the stability of the electrode laminate can be improved.
- FIG. 1 is a cross-sectional view schematically showing an embodiment of an electrode assembly according to a first embodiment of the present invention.
- FIG. 2 is a cross-sectional view schematically showing another embodiment of the electrode assembly according to the first embodiment of the present invention.
- FIG 3 is a schematic cross-sectional view of an electrode assembly according to a second exemplary embodiment of the present invention.
- FIG. 4 is a cross-sectional view schematically showing a method of manufacturing an electrode assembly according to a third exemplary embodiment of the present invention.
- FIG. 5 is a schematic cross-sectional view of a method of manufacturing an electrode assembly according to a fourth exemplary embodiment of the present invention.
- FIG. 6 is a schematic cross-sectional view of a method of manufacturing an electrode assembly according to a fifth exemplary embodiment of the present invention.
- FIG. 1 is a cross-sectional view schematically showing an embodiment of an electrode assembly according to a first embodiment of the present invention
- Figure 2 is a schematic cross-sectional view showing another embodiment of the electrode assembly according to a first embodiment of the present invention.
- the electrode assembly 100 may have a separation film that is folded to be positioned between a plurality of unit cells 110, 120, 130, 140, and 150 and a plurality of unit cells 110, 120, 130, 140, and 150. 160).
- FIGS. 1 and 2 an electrode assembly as a first embodiment of the present invention will be described in detail.
- the unit cells 110, 120, 130, 140, and 150 are power generators capable of charging and discharging, and form a structure in which at least one electrode 113 and at least one separator 114 are alternately stacked.
- the electrode 113 may include an anode 111 and a cathode 112.
- the separator 114 separates the positive electrode 111 and the negative electrode 112 and electrically insulates it.
- one unit cell 110, 120, 130, 140, or 150 of the plurality of unit cells 110, 120, 130, 140, and 150 may include at least one anode 111, at least one cathode 112, and at least one separator 114.
- the separator 114 is made of an insulating material and alternately stacked with the positive electrode 111 and the negative electrode 112.
- the separator 114 may be positioned between the anode 111 and the cathode 112, for example.
- the separator 114 may be positioned between the anode 111 and the cathode 112 as another example, and may be disposed on the outer surfaces of the anode 111 and the cathode 112.
- the separator 114 is a multilayer film made of, for example, polystyrene, polypropylene, or a combination thereof having microporosity, or polyvinylidene fluoride, polyethylene oxide, polyacrylonitrile, or polyvinylidene fluoride hexa. It may be a polymer film for a solid polymer electrolyte or a gel polymer electrolyte such as a fluoropropylene copolymer.
- the separation film 160 may be folded to be positioned between the plurality of unit cells 110, 120, 130, 140, and 150.
- the separation film 160 may be folded two or more times so that the separation film 160 is wrapped in contact with the first unit cell 110 positioned at the beginning of the separation film 160 among the plurality of unit cells 110, 120, 130, 140, and 150. Can be. Accordingly, the separation film 160 completely surrounds the exposed portion of the electrode 113 of the first unit cell 110 to prevent damage to the electrode 113. In addition, it is possible to prevent the separation of the separation film 160 surrounded by the first unit cell 110.
- the separation film 160 folds the first unit cell 110 once and surrounds the first folding unit 161 and the second fold unit surrounding the first unit cell 110 by further folding. 162 may be included.
- first folding unit 161 surrounds one surface and one side of the first unit cell 110, and the second folding unit 162 is provided to surround the other surface and the other side of the second unit cell 120. Can be. At this time, for example, the first folding unit 161 surrounds the upper side and the left side of the first unit cell 110 shown in FIG. 1, and the second folding unit 162 is provided to surround the lower side and the right side. Can be.
- first folding part 161 may be adhered to a part of the separation film 160 facing the folding when the adhesive layer 161a is applied to the outer surface around the folding direction. Accordingly, the release of the separation film 160 surrounded by the first unit cell 110 may be prevented more effectively.
- first folding part 161 and the second folding part 162 may be provided to completely surround the outer circumference of the first unit cell 110.
- first folding part 161 and the second folding part 162 are shown as being separated in FIG. 1, the first folding part 161 and the second folding part 162 are long separated films connected to one. It means a part portion of (160).
- the electrode assembly 100 may further include a fixing tape 170 to prevent the folding of the separation film 160.
- the fixing tape 170 may be attached over the end portion of the separation film 160 and the portion of the separation film 160 adjacent thereto after the folding of the separation film 160.
- the separation film 160 may be provided in a form in which the separation film 160 wraps the plurality of unit cells 110, 120, 130, 140, and 150 in the same direction. That is, the plurality of unit cells 110, 120, 130, 140, and 150 may be sequentially provided on one side of the separation film 160 to be folded in one direction.
- the separation film 160 may surround the plurality of unit cells 110, 120, 130, 140, and 150, and the direction in which the plurality of unit cells 110, 120, 130, 140, and 150 are folded may be clockwise or counterclockwise.
- the separation film 260 may be provided in a form in which the separation film 260 alternately wraps the plurality of unit cells 110, 120, 130, 140, and 150 in different directions. That is, the separation film 260 may be provided to sequentially wrap the plurality of unit cells 110, 120, 130, 140, and 150 arranged in one direction in the clockwise and counterclockwise directions, respectively.
- the separation film 260 wraps the first unit cell 110 arranged in the counterclockwise direction, and surrounds the second unit cell 120 arranged in the clockwise direction, and the third unit cell arranged in the third
- the 130 may be wrapped in the counterclockwise direction again, and may be provided to sequentially wrap the plurality of unit cells 110, 120, 130, 140, and 150.
- a portion including the first folding part 261 and the second folding part 262 in the separation film 260 may surround the first unit cell 110.
- the separation film 260 may form the electrode assembly 200 by surrounding the entire circumference of the plurality of unit cells 110, 120, 130, 140, and 150.
- FIG 3 is a schematic cross-sectional view of an electrode assembly according to a second exemplary embodiment of the present invention.
- the electrode assembly 300 includes a plurality of unit cells 110, 120, 130, 140, and 150 and a separation film 360 folded to be located between the plurality of unit cells 110, 120, 130, 140, and 150. Include.
- the first folding part 361 of the separation film 360 when compared with the electrode assembly 100 according to the first embodiment, has a first unit cell. There is a difference in the shape of wrapping 110.
- the present embodiment briefly describes the contents overlapping with the first embodiment, and focuses on the differences.
- the separation film 360 may be a portion of the first unit cell 110 positioned at the beginning of the separation film 360 among the plurality of unit cells 110, 120, 130, 140, and 150.
- the first folding part 361 and the second folding part 362 are included.
- the first folding part 361 may be provided to surround one side end (or part of the upper surface) and one side of the first unit cell 110. That is, for example, based on the drawing shown in FIG. 3, the first folding part 361 may be provided to surround one side end of the upper surface of the first unit cell 110 and the left side.
- the adhesive layer 361b may be formed by applying an adhesive to an inner surface of the first folding part 361 in the folding direction. Accordingly, the first folding part 361 may be attached to the first unit cell 110 through the adhesive layer 361b. Therefore, the first folding part 361 may be prevented from being released from the first unit cell 110, and the separation of the separation film 360 surrounding the electrode assembly 300 may be prevented.
- the second folding unit 362 may be provided to surround the other side and the other side of the second unit cell 120. That is, for example, the second folding unit 362 may be provided to surround the lower surface and the right side of the first unit cell 110 based on the drawing illustrated in FIG. 3.
- FIG. 4 is a cross-sectional view schematically showing a method of manufacturing an electrode assembly according to a third exemplary embodiment of the present invention.
- an electrode assembly manufacturing method includes a preparation process of preparing a plurality of unit cells 110, 120, 130, 140, and 150 and a separation film 160, and separating the plurality of unit cells 110, 120, 130, 140, and 150. It includes a seating process and a folding process to be seated on the film 160.
- FIGS. 1 and 4 a method of manufacturing an electrode assembly according to a third exemplary embodiment of the present invention will be described in detail.
- the preparation process includes a plurality of unit cells 110, 120, 130, 140, and 150 including at least one anode 111, at least one cathode 112, and at least one separator 114, respectively.
- the separator 114 may be made of an insulating material and alternately stacked with the anode 111 and the cathode 112.
- the seating process sequentially seats the plurality of unit cells 110, 120, 130, 140, and 150 on the separation film 160 in one direction.
- the seating process may sequentially arrange the plurality of unit cells 110, 120, 130, 140, and 150 on the separation film 160.
- the interval between the first unit cell 110 and the second unit cell 120 adjacent to the first unit cell 110 is a1 and the width of the first unit cell 110.
- the unit cells 110, 120, 130, 140, and 150 may be positioned to satisfy a conditional expression of 2 * w1 + 4 * h1 ⁇ a1.
- the folding process may be formed so that the first unit cell 110 is rotated 360 degrees or more and the separation film 160 surrounds the circumference of the first unit cell 110.
- the folding process sequentially folds the separation film 160 in which the plurality of unit cells 110, 120, 130, 140, and 150 are seated so that the separation film 160 is positioned between the plurality of unit cells 110, 120, 130, 140, and 150.
- the separation film 160 may be folded two or more times so as to surround the first unit cell 110 positioned at the beginning of the separation film 160 among the plurality of unit cells 110, 120, 130, 140, and 150.
- the separation film 160 is folded once and includes a first folding part 161 surrounding the first unit cell 110 and an additional folding and surrounding the first unit cell 110. It may include two folding unit 162.
- the folding process is performed by folding the end of the first separation film 160 to face the first unit cell 110 so that the first folding part 161 of the separation film 160 is connected to the first unit cell 110.
- the first folding process of folding one side and one side and then rotating the first unit cell 110 by 180 degrees and the second folding part 162 of the separation film 160 is the circumference of the first unit cell 110 It may include a second folding step of folding to further wrap.
- the first folding unit 161 and the first unit cell 110 may be rotated together and folded. In this case, the first folding unit 161 may be folded to surround the first unit cell 110.
- the folding process is the adhesive layer coating process for applying the adhesive layer 161a to the outer surface around the folding direction of the first folding unit 161 and the first folding unit 161 when folding to the adhesive layer 161a It may further include an adhesive process for adhering the portion of the separation film 160 facing each other. Accordingly, the release of the first folding part 161 surrounding the first unit cell 110 can be effectively prevented.
- the electrode assembly manufacturing method is the first of the separation film 160 when folding the separation film 160 and a plurality of unit cells (110,120,130,140,150)
- the first unit cell 110 which is located in the second unit of the folding process by folding the outer peripheral of the first unit cell 110 with the film 160 is provided twice, the first of the separation film 160 occurs most frequently It is possible to prevent the separation of the separation film 160 surrounding the first unit cell 110 positioned in the, and to prevent the exposure of the electrode 113 of the first unit cell 110 easily occurs.
- the strong folding coupling structure can improve the stability of the electrode assembly 100 and the secondary battery on which the electrode assembly 100 is mounted.
- FIG. 5 is a schematic cross-sectional view of a method of manufacturing an electrode assembly according to a fourth exemplary embodiment of the present invention.
- an electrode assembly manufacturing method includes a preparation process of preparing a plurality of unit cells 110, 120, 130, 140, and 150 and a separation film 160, a seating process, and a folding process.
- the first folding part 161 of the separation film 160 may include a first unit cell when compared with the method of manufacturing the electrode assembly according to the third embodiment. Before 110 rotates, there is a difference in that the first unit cell 110 is wrapped first.
- the present embodiment briefly describes the contents overlapping with the third embodiment and focuses on the differences.
- the mounting process seats a plurality of unit cells 110, 120, 130, 140, and 150 on one surface of the separation film 160.
- the separation film 160 is folded once and the first folding unit 161 surrounding the first unit cell 110 and a second folding further folded once and surrounding the first unit cell 110. Section 162.
- the separation film between the end of the first unit cell 110 and the separation film 160 positioned at the beginning of the separation film 160
- the first unit cell 110 may be seated at a distance spaced from the end of the separation film 160 by a predetermined distance such that the first folding part 161 of the 160 is positioned.
- the seating process may sequentially arrange the plurality of unit cells 110, 120, 130, 140, and 150 on the separation film 160.
- the separation between the first unit cell 110 and the second unit cell 120 adjacent to the first unit cell 110 of the plurality of unit cells (110,120,130,140,150) a2 the separation film 160
- the width of the first unit cell 110 is w1
- the height of the first unit cell 110 is h1, 1 * w1 +
- the unit cells 110, 120, 130, 140, and 150 may be positioned to satisfy a conditional expression of 3 * h1 ⁇ a2 and 1 * w1 + 1 * h1 ⁇ a3.
- the first folding process of folding the first folding unit 161 to the first unit cell 110 and the first unit cell 110 are rotated by 180 degrees, and the second folding unit 162 makes the first unit cell.
- a second folding process surrounding the circumference of the 110 is included.
- the first folding part 161 of the separation film 160 is folded to surround the first unit cell 110.
- the first folding unit 161 may be folded to surround the side and one surface of the first unit cell 110, for example. That is, for example, the first folding unit 161 may be folded to surround the right side and the top side of the first unit cell 110 shown in FIG. 5.
- FIG. 6 is a schematic cross-sectional view of a method of manufacturing an electrode assembly according to a fifth exemplary embodiment of the present invention.
- an electrode assembly manufacturing method includes a preparation process of preparing a plurality of unit cells 110, 120, 130, 140, and 150 and a separation film 360, a seating process, and a folding process.
- the folding process includes a first folding process of folding once and a second folding process of folding twice.
- the electrode assembly manufacturing method according to the fifth embodiment of the present invention is compared with the electrode assembly manufacturing method according to the third embodiment and the electrode assembly manufacturing method according to the fourth embodiment described above, the first folding of the separation film 360 There is a difference in that the portion 361 is folded at one end and side surface of the first unit cell 110.
- the present embodiment briefly describes the contents overlapping with the third and fourth embodiments and focuses on the differences.
- the first folding process includes the first folding unit 361 of the separation film 360 as the first unit cell 110. It may be folded to surround one side end (or part of the upper surface) and one side of the side. Accordingly, exposure of the electrode 113 of the first unit cell 110, which is weak in the past, may be prevented and release of the separation film 360 may be prevented after folding.
- an adhesive is applied to form an adhesive layer 361b by applying an adhesive to an inner surface of the first folding unit 361 in the folding direction, and the first folding unit 361 includes the adhesive layer 361b.
- the method may further include an adhesive process of adhering to the first unit cell 110 through). Accordingly, the first folding part 361 may be prevented from being released from the first unit cell 110, and the release of the separation film 360 surrounding the electrode assembly 300 may be prevented.
- the first folding part 361 may be folded into the first unit cell 110. have. At this time, air may be injected through an air compressor or the like.
- the first folding unit 361 may be folded into the first unit cell 110 through a jig.
- the first folding part 361 may be folded into the first unit cell 110 through an insertion mechanism part.
- the first folding process may fold the first folding unit 361 with the force of gravity as another example.
- the first folding part 361 when the first folding part 361 is positioned in the horizontal direction and the part except for the first folding part is fixed, the first folding part 361 may be folded by the force of gravity. That is, the part except the folding part may be fixed, and the folding part may be horizontally positioned and folded under the force of gravity.
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Abstract
Description
Claims (16)
- 적어도 하나의 양극, 적어도 하나의 음극, 적어도 하나의 분리막을 각각 포함하는 복수개의 단위셀들 및 분리필름을 준비하는 준비과정;복수개의 상기 단위셀들을 상기 분리필름의 일면에 안착시키는 안착과정; 및복수개의 상기 단위셀들 사이에 상기 분리필름이 위치되도록 복수개의 상기 단위셀들이 안착된 상기 분리필름을 순차적으로 폴딩하는 폴딩과정을 포함하고,상기 폴딩과정은 복수개의 상기 단위셀들 중에서 상기 분리필름의 초도에 위치되는 제1 단위셀을 접하면서 감싸도록 상기 분리필름을 2회 이상 폴딩하는 전극 조립체 제조방법.
- 청구항 1에 있어서,상기 안착과정은상기 분리필름 상에 복수개의 상기 단위셀들을 순차적으로 배열하고,복수개의 상기 단위셀들 중에서 상기 제1 단위셀과 상기 제1 단위셀에 인접한 제2 단위셀 사이의 간격을 a1, 상기 제1 단위셀의 폭을 w1, 상기 제1 단위셀의 높이를 h1라고 할 때, 2*w1 + 4*h1 < a1 의 조건식을 만족하도록 상기 단위셀들을 위치시키는 전극 조립체 제조방법.
- 청구항 1에 있어서,상기 폴딩과정은상기 제1 단위셀을 360도 이상 회전시키며 상기 분리필름이 상기 제1 단위셀의 둘레를 감싸도록 형성시키는 전극 조립체 제조방법.
- 청구항 1에 있어서,상기 안착과정은상기 분리필름 상에 복수개의 상기 단위셀들을 순차적으로 배열하고,복수개의 상기 단위셀들 중에서 상기 제1 단위셀과 상기 제1 단위셀에 인접한 제2 단위셀 사이의 간격을 a2, 상기 분리필름의 단부와 상기 제1 단위셀 과의 거리를 a3, 상기 제1 단위셀의 폭을 w1, 상기 제1 단위셀의 높이를 h1라고 할 때, 1*w1 + 3*h1 < a2 및 1*w1 + 1*h1 < a3의 조건식을 만족하도록 상기 단위셀들을 위치시키는 전극 조립체 제조방법.
- 청구항 1에 있어서,상기 폴딩과정은상기 제1 분리필름의 단부가 상기 제1 단위셀 방향을 향하도록 폴딩하여 상기 분리필름의 제1 폴딩부가 상기 제1 단위셀의 일면 및 일측면을 감싸도록 폴딩하는 제1 폴딩과정; 및이후 상기 제1 단위셀을 180도 회전시키며 상기 분리필름의 제2 폴딩부가 상기 제1 단위셀의 둘레를 추가로 감싸도록 폴딩시키는 제2 폴딩과정을 포함하는 전극 조립체 제조방법.
- 청구항 5에 있어서,상기 제1 폴딩과정은상기 제1 폴딩부가 상기 제1 단위셀의 일면 단부 및 일측면을 감싸게하는 전극 조립체 제조방법.
- 청구항 6에 있어서,상기 제1 폴딩과정은상기 분리필름의 상기 제1 폴딩부에 에어를 분사하여,상기 제1 폴딩부를 상기 제1 단위셀에 폴딩시키는 전극 조립체 제조방법.
- 청구항 6에 있어서,상기 제1 폴딩과정은상기 제1 폴딩부를 지그를 통해 상기 제1 단위셀에 폴딩시키는 전극 조립체 제조방법.
- 청구항 1에 있어서,상기 분리필름은 1회 폴딩되며 상기 제1 단위셀을 둘러싸는 제1 폴딩부; 및 추가로 1회 더 폴딩되며 상기 제1 단위셀을 둘러싸는 제2 폴딩부를 포함하고,상기 폴딩과정은상기 제1 폴딩부의 폴딩방향을 중심으로 외측면에 점착층을 도포하는 점착층 도포과정; 및상기 점착층에 폴딩시 상기 제1 폴딩부와 마주보는 상기 분리필름 부분을 접착하는 접착과정을 더 포함하는 전극 조립체 제조방법.
- 청구항 5 내지 청구항 9 중 어느 한 항에 있어서,상기 제1 폴딩과정은상기 제1 폴딩부의 폴딩방향을 중심으로 내측면에 접착제를 도포하여 접착층을 형성하는 접착제 도포과정; 및상기 제1 폴딩부를 상기 접착층을 통해 상기 제1 단위셀에 접착하는 접착과정을 더 포함하는 전극 조립체 제조방법.
- 적어도 하나의 양극, 적어도 하나의 음극, 적어도 하나의 분리막을 각각 포함하는 복수개의 단위셀들; 및복수개의 상기 단위셀들 사이에 위치되도록 폴딩되어 있는 분리필름을 포함하고,상기 복수개의 단위셀 중에서 상기 분리필름의 초도에 위치되는 제1 단위셀을 접하면서 감싸도록 상기 분리필름이 2회 이상 폴딩된 형태로 구비되는 전극 조립체.
- 청구항 11에 있어서,상기 분리필름은 상기 제1 단위셀을 1회 폴딩하며 둘러싸는 제1 폴딩부 및 상기 제1 단위셀을 추가로 1회 폴딩하며 둘러싸는 제2 폴딩부를 포함하는 전극 조립체.
- 청구항 12에 있어서,상기 제1 폴딩부는 폴딩방향을 중심으로 외측면에 점착층이 도포되어, 폴딩시 마주보는 상기 분리필름 부분과 접착되는 전극 조립체.
- 청구항 12에 있어서,상기 제1 폴딩부 및 상기 제2 폴딩부는 상기 제1 단위셀의 외측 둘레를 전부 감싸는 전극 조립체.
- 청구항 12에 있어서,상기 제1 폴딩부는 상기 제1 단위셀의 일면 단부 및 일측면을 감싸고,상기 제2 폴딩부는 상기 제1 단위셀의 타면 및 타측면을 감싸는 전극 조립체.
- 청구항 12에 있어서,상기 제1 폴딩부는 폴딩방향을 중심으로 내측면에 접착층이 형성되어, 상기 제1 폴딩부가 상기 접착층을 통해 상기 제1 단위셀에 접착된 전극 조립체.
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010008205A (ko) * | 2000-11-15 | 2001-02-05 | 유성림 | 컴퓨터 네트워크를 이용한 의료 서비스 방법과 시스템 및이 방법을 기록한 컴퓨터로 읽을 수 있는 기록 매체 |
KR20090008075A (ko) * | 2007-07-16 | 2009-01-21 | 주식회사 엘지화학 | 신규한 구조의 스택/폴딩형 전극조립체 및 그것의 제조방법 |
KR20100051353A (ko) * | 2008-11-07 | 2010-05-17 | 주식회사 엘지화학 | 중첩 전기화학소자 |
KR20150045624A (ko) * | 2013-10-21 | 2015-04-29 | 주식회사 엘지화학 | 스택 폴딩형 전극조립체 및 그 제조방법 |
KR20150051498A (ko) * | 2013-11-04 | 2015-05-13 | 주식회사 엘지화학 | 전극 조립체 및 이를 제조하는 장치 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100515572B1 (ko) * | 2000-02-08 | 2005-09-20 | 주식회사 엘지화학 | 중첩 전기화학 셀 및 그의 제조 방법 |
KR100388648B1 (ko) * | 2001-05-23 | 2003-06-25 | 주식회사 코캄엔지니어링 | 자동화된 리튬 2차전지 제조 시스템 |
KR100646535B1 (ko) * | 2005-03-23 | 2006-11-23 | 삼성에스디아이 주식회사 | 리튬 이온 전지용 전극조립체와 이를 이용한 리튬 이온이차전지 |
KR100948972B1 (ko) * | 2005-11-03 | 2010-03-23 | 주식회사 엘지화학 | 폴딩부가 형성되어 있는 분리막으로 구성된 이차전지 |
KR100861705B1 (ko) * | 2006-05-29 | 2008-10-06 | 주식회사 엘지화학 | 구조적 안정성과 전해액의 젖음성이 우수한 전극조립체 및이를 포함하는 이차전지 |
KR100987300B1 (ko) * | 2007-07-04 | 2010-10-12 | 주식회사 엘지화학 | 스택-폴딩형 전극조립체 및 그것의 제조방법 |
KR101014817B1 (ko) * | 2007-12-14 | 2011-02-14 | 주식회사 엘지화학 | 안전 부재를 포함하고 있는 스택/폴딩형 전극조립체 및그것의 제조방법 |
KR101367754B1 (ko) * | 2011-07-07 | 2014-02-27 | 주식회사 엘지화학 | 전기화학소자용 전극 조립체 및 이를 구비한 전기화학소자 |
KR101332282B1 (ko) * | 2012-03-14 | 2013-11-22 | 주식회사 엘지화학 | 신규한 구조의 전극조립체 및 이를 포함하는 전지셀 |
JP6027228B2 (ja) * | 2012-05-07 | 2016-11-16 | エルジー・ケム・リミテッド | 電極積層体及びそれを含むリチウム二次電池 |
KR20130135017A (ko) * | 2012-05-31 | 2013-12-10 | 주식회사 엘지화학 | 단차를 갖는 전극 조립체 및 이를 포함하는 전지셀, 전지팩 및 디바이스 |
DE102012019975B3 (de) | 2012-10-04 | 2013-11-14 | Jonas & Redmann Automationstechnik Gmbh | Vorrichtung zur Herstellung von Elektrodenstapeln |
KR101668356B1 (ko) * | 2013-10-08 | 2016-10-21 | 주식회사 엘지화학 | 스택-폴딩형 전극 조립체 및 그 제조 방법 |
KR101676406B1 (ko) * | 2013-10-31 | 2016-11-15 | 주식회사 엘지화학 | 스택-폴딩형 전극 조립체 |
KR101692776B1 (ko) * | 2014-05-15 | 2017-01-17 | 주식회사 엘지화학 | 테트라 셀을 포함하고 있는 전지셀 |
KR101706319B1 (ko) * | 2014-05-22 | 2017-02-13 | 주식회사 엘지화학 | 계단 구조의 복합 전극 조립체 |
KR101684283B1 (ko) | 2014-07-18 | 2016-12-08 | 주식회사 엘지화학 | 젤리롤형 전극 조립체 |
KR101710060B1 (ko) * | 2014-08-13 | 2017-02-24 | 주식회사 엘지화학 | 스택-폴딩형 전극조립체 및 그 제조방법 |
JP6490190B2 (ja) * | 2014-08-13 | 2019-03-27 | エルジー・ケム・リミテッド | 積層/折畳み型電極組立体及びその製造方法 |
-
2016
- 2016-11-08 KR KR1020160147929A patent/KR102068710B1/ko active IP Right Grant
-
2017
- 2017-10-24 EP EP17869470.9A patent/EP3416225B1/en active Active
- 2017-10-24 CN CN202210519479.4A patent/CN115020627B/zh active Active
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- 2017-10-24 CN CN201780058990.6A patent/CN110178257B/zh active Active
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010008205A (ko) * | 2000-11-15 | 2001-02-05 | 유성림 | 컴퓨터 네트워크를 이용한 의료 서비스 방법과 시스템 및이 방법을 기록한 컴퓨터로 읽을 수 있는 기록 매체 |
KR20090008075A (ko) * | 2007-07-16 | 2009-01-21 | 주식회사 엘지화학 | 신규한 구조의 스택/폴딩형 전극조립체 및 그것의 제조방법 |
KR20100051353A (ko) * | 2008-11-07 | 2010-05-17 | 주식회사 엘지화학 | 중첩 전기화학소자 |
KR20150045624A (ko) * | 2013-10-21 | 2015-04-29 | 주식회사 엘지화학 | 스택 폴딩형 전극조립체 및 그 제조방법 |
KR20150051498A (ko) * | 2013-11-04 | 2015-05-13 | 주식회사 엘지화학 | 전극 조립체 및 이를 제조하는 장치 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3416225A4 * |
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CN115020627B (zh) | 2024-03-08 |
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