WO2023033448A1 - 전지셀 및 이를 포함하는 전지 모듈 - Google Patents
전지셀 및 이를 포함하는 전지 모듈 Download PDFInfo
- Publication number
- WO2023033448A1 WO2023033448A1 PCT/KR2022/012663 KR2022012663W WO2023033448A1 WO 2023033448 A1 WO2023033448 A1 WO 2023033448A1 KR 2022012663 W KR2022012663 W KR 2022012663W WO 2023033448 A1 WO2023033448 A1 WO 2023033448A1
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- WO
- WIPO (PCT)
- Prior art keywords
- battery cell
- extension
- electrode
- cell
- reinforcing member
- Prior art date
Links
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 76
- 238000007789 sealing Methods 0.000 claims abstract description 51
- 238000005452 bending Methods 0.000 claims description 29
- 238000003860 storage Methods 0.000 claims description 4
- 239000010408 film Substances 0.000 description 15
- 239000007789 gas Substances 0.000 description 12
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
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- 230000001502 supplementing effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/178—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a battery cell and a battery module including the same, and more particularly, to a battery cell having an improved sealing level and a battery module including the same.
- secondary batteries are classified into cylindrical batteries and prismatic batteries in which the electrode assembly is embedded in a cylindrical or prismatic metal can, and pouch-type batteries in which the electrode assembly is embedded in a pouch-type case made of an aluminum laminate sheet. .
- Secondary batteries are also classified according to the structure of an electrode assembly having a laminated structure of a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode.
- a jelly-roll type (wound type) electrode assembly having a structure in which long sheet-type positive and negative electrodes are wound with a separator interposed therebetween, a plurality of positive and negative electrodes cut in units of a predetermined size with a separator interposed therebetween and stacked (stacked) electrode assemblies sequentially stacked.
- a stack/folding type electrode assembly which is a mixture of the jelly-roll type and stack type, has been developed.
- the pouch-type battery having a structure in which a stacked or stacked/folding type electrode assembly is embedded in a pouch-type battery case of a laminate sheet is gradually increasing in use due to low manufacturing cost, small weight, and easily deformable shape.
- FIG. 1 is a perspective view of a conventional pouch-type battery cell.
- a conventional pouch-type battery cell may include a cell case 14 of a laminate sheet accommodating an electrode assembly including a positive electrode, a negative electrode, and a separator.
- the electrode assembly mounted in the accommodating part 15, which is the center area of the cell case 14, is protected from the outside by heat-sealing the sealing part 16, which is the edge area of the cell case 14.
- the electrode leads 11 and 12 connected to the electrode tabs of the electrode assembly inside the cell case 14 are drawn out of the cell case 14 via the sealing part 16, and the upper and lower surfaces of the electrode leads 11 and 12
- a lead film 18 is positioned between the and sealing portion 16 .
- the sealing part 16 of the battery cell 10 is mainly joined by thermal fusion, there may be a large variation in rigidity by position, and accordingly, there is a problem that the battery cell 10 is easily broken when the internal pressure increases.
- a fire may occur in the battery cell 10, and the fire may cause a fire in the adjacent battery cell 10. can be propagated by
- the problem to be solved by the present invention is to provide a battery module including a battery cell and the same in which the rigidity variation of the sealing part is eliminated.
- a battery cell is connected to an electrode assembly including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, a cell case in which the electrode assembly is accommodated, and the electrode assembly, and the cell case
- a reinforcing member is positioned on the outer surface of the cell case.
- the reinforcing member may be located at a position corresponding to the sealing part.
- the reinforcing member may be located at a position corresponding to the electrode lead in the cell case.
- the reinforcing member may have a length and a width.
- the reinforcing member may include a bending part bent to have a curvature, an extension part extending from the bending part, and a connection part in which both ends of the extension part are connected.
- a bent portion may be formed between the bending portion and the extension portion.
- the extension part may include a first extension part and a second extension part extending from both ends of the bending part, and a gap between the first extension part and the second extension part may have a value smaller than a maximum diameter of the bending part.
- connection part may have a shape extending from the first extension part to the second extension part, and a hooking part may be formed at a portion of the connection part in contact with the second extension part.
- connection portion may be formed by twisting portions extending from the first extension portion and the second extension portion.
- a reinforcing tape may be provided on an outer surface of the cell case coupled by the sealing part.
- a battery module according to another embodiment of the present invention includes at least one of the battery cells described above.
- FIG. 1 is a perspective view of a conventional pouch-type battery cell.
- FIG. 2 is a perspective view of a battery cell according to an embodiment of the present invention.
- FIG. 3 is a view showing a weak area in the battery cell of FIG. 2 .
- FIG. 4 is a view showing a cut A-A of FIG. 3 when a gas pocket occurs.
- FIG 5 and 6 are views showing that a reinforcing tape is provided to a battery cell according to an embodiment of the present invention.
- FIG. 7 is a view showing a BB section of FIG. 6 when a gas pocket occurs.
- FIG. 8 is a view showing an example in which a reinforcing member is provided to a battery cell according to another embodiment of the present invention.
- FIG. 9 is a view showing another example in which a reinforcing member is provided to a battery cell according to another embodiment of the present invention.
- FIG. 10 is a view showing an example of a battery cell according to another embodiment of the present invention.
- FIG. 11 is a view showing another example of a battery cell according to another embodiment of the present invention.
- planar it means when the corresponding part is viewed from above, and when it is referred to as “cross-section”, it means when the cross section of the corresponding part cut vertically is viewed from the side.
- FIG. 2 is a perspective view of a battery cell according to an embodiment of the present invention.
- the battery cell 110 may be provided in a pouch type in which the number of stacked cells per unit area can be maximized.
- the battery cell 110 provided in a pouch type may be manufactured by accommodating the electrode assembly in the cell case 114 and heat-sealing the edges of the cell case 114 .
- the electrode assembly includes a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, and may be provided in a jelly-roll type (winding type), stack type (lamination type), or composite type (stack/folding type) structure. there is.
- the cell case 114 may include a storage portion 115 for accommodating the electrode assembly and a sealing portion 116 formed at an edge of the cell case 114 to seal the electrode assembly.
- the cell case 114 may have a laminate structure of a resin layer/metal thin film layer/resin layer.
- the cell case 114 may be provided in a form in which the periphery of the contacting edge is sealed after the laminate sheet is folded. At this time, the inner space formed by folding the sheet may be the accommodating portion 115 accommodating the electrode assembly, and the three open corners of the folded sheet may be sealed to form the sealing portion 116 .
- the sealing part 116 is shown as being formed on both ends 114a and 114b of the cell case 114 and one side part 114c connecting them, but this is not necessarily the case, and all of the cell case 114 It is also possible to form a corner.
- each electrode lead 111 and 112 may protrude outward from the cell case 114 via the sealing portion 116 .
- one end of each electrode lead 111 and 112 is electrically connected to the positive electrode tab or negative electrode tab of the electrode assembly by being located inside the battery cell 110, and the other end of each electrode lead 111 and 112 is connected to the battery cell 110 It can be electrically connected to a separate member, for example, a bus bar, by being led out to the outside.
- the lead film 118 may be positioned on upper or lower surfaces of the electrode leads 111 and 112 corresponding to the sealing portion 116 .
- the lead film 118 may prevent a short circuit from occurring in the electrode leads 111 and 112 when the sealing portion 116 is thermally fused or press-fused. Also, since the lead film 118 is positioned between the sealing portion 116 and the electrode leads 111 and 112 , sealing between the sealing portion 116 and the electrode leads 111 and 112 may be improved.
- the lead film 118 may have a wider width than the electrode leads 111 and 112 .
- the lead film 118 may have a length greater than the length of the sealing portion 116 based on the protruding direction of the electrode leads 111 and 112 and may have a length smaller than the length of the electrode leads 111 and 112 . Accordingly, the lead film 118 can prevent side surfaces of the electrode leads 111 and 112 from being exposed to the outside without interfering with the electrical connection of the electrode leads 111 and 112 .
- FIG. 3 is a view showing a weak area in the battery cell of FIG. 2 .
- FIG. 4 is a view showing a cut A-A of FIG. 3 when a gas pocket occurs.
- the battery cell 110 may include electrode leads 111 and 112 protruding from one end of the cell case 114 via the sealing portion 116 .
- the sealing portion 116 formed at both ends 114a and 114b where the electrode leads 111 and 112 are located is connected to the sealing portion 116 formed at one side portion 114c.
- the stiffness variation may be greater than
- the area around the sealing portion 116 formed at both ends 114a and 114b may be referred to as a weak area 120 that is easily opened according to internal pressure.
- the weak area 120 of the present invention may be described based on one end of the battery cell through the drawings and description, but is not necessarily limited thereto, and the same or similar description is given even in the case of the other end of the battery cell. Make it clear in advance that it can be.
- FIG. 5 and 6 are views showing that a reinforcing tape is provided to a battery cell according to an embodiment of the present invention.
- FIG. 7 is a view showing a BB section of FIG. 6 when a gas pocket occurs.
- a reinforcing tape 210 may be provided to the weak area 120 of the battery cell 110 according to the present embodiment.
- the reinforcing tape 210 may be provided on the outer surface of the cell case 114 to fix the two surfaces of the cell case 114 coupled by the sealing part 116 .
- the reinforcing tape 210 may be provided to correspond to the sealing parts 116 formed at both ends 114a and 114b of the cell case 114 .
- the reinforcing tape 210 may be provided to correspond to a portion of the cell case 114 where the electrode leads 111 and 112 are located or a portion where the lead film 118 is located.
- the reinforcing tape 210 is shown as being provided on one side of the battery cell 110, but it is obvious that the reinforcing tape 210 may also be provided on the other side of the battery cell 110.
- the reinforcing tape 210 may be provided in a form of covering one side and the other side of the weak area.
- the reinforcing tape 210 of FIG. 5 covers the entire area corresponding to the lead film 118, and the reinforcing tape 210 of FIG. 6 partially covers the area corresponding to the lead film 118.
- the reinforcing tape 210 is shown as being provided on a part of the weak area 120, but this is not necessarily the case, and the reinforcing tape 210 is provided on the entire weak area 120, or as shown in the drawings. It is also possible to provide to cover other areas.
- the reinforcing tape 210 may have an adhesive applied to one surface. By including an adhesive, the reinforcing tape 210 can be easily attached to the cell case 114 .
- the reinforcing tape 210 may be easily fabricated. Since the size of the reinforcing tape 210 is easily adjustable by cutting or the like, when applied to the cell case 114, the size of the reinforcing tape 210 can be easily adjusted to fit the intended size of the designer.
- the reinforcing tape 210 may be a material having a certain level of toughness or higher.
- the reinforcing tape 210 may be a PET tape, a silicon tape, or an aluminum (AL) tape.
- the reinforcing tape 210 may supplement the rigidity of the sealing portion 116 .
- the reinforcing tape 210 may minimize shear force applied to the sealing portion 116 .
- the reinforcing tape 210 prevents the sealing portion 116 from being opened, thereby preventing gas inside the battery cell 110 from being discharged to the outside. Therefore, the reinforcing tape 210 is provided at the outermost end of the sealing portion 116, outside the sealing portion 116, or at the outermost end of the cell case 114, specifically, close to the protruding electrode leads 111 and 112 may be desirable.
- the stiffness of the reinforcing tape 210 may not be sufficient to minimize the shear force applied to the sealing portion 116. can Therefore, hereinafter, the reinforcing member 220 having higher rigidity than the reinforcing tape 210 will be described.
- FIG. 8 is a view showing an example in which a reinforcing member is provided to a battery cell according to another embodiment of the present invention.
- 9 is a view showing another example in which a reinforcing member is provided to a battery cell according to another embodiment of the present invention.
- a reinforcing member 220 may be provided in the weak area 120 of the battery cell 110 according to the present embodiment.
- the reinforcing member 220 is provided on the outer surface of the cell case 114 so that the reinforcing member 220 can firmly support the outer surface of the cell case 114 and can minimize the shear force applied to the sealing portion 116. there is.
- the reinforcing member 220 may be formed by forming a long-shaped member so that both ends in the longitudinal direction come into contact with each other, and then connecting both ends thereof.
- the reinforcing member 220 may have a folded shape.
- the reinforcing member 220 may be provided to have a width as shown in FIG. 8 .
- it may be provided in the form of a line having a narrow width or only a length.
- the reinforcing member 220 may be provided with a material having high rigidity and ductility.
- the reinforcing member 220 may be made of metal, plastic, or other materials.
- the reinforcing member 220 may include a bending part 222 , an extension part 224 and a connection part 226 .
- the bending portion 222 refers to a portion bent to form the reinforcing member 220
- the connecting portion 226 refers to a portion where both ends of the member are connected
- the extension portion 224 refers to the bending portion 222 It may mean a part extending from to the connecting portion 226.
- the two parts of the reinforcing member 220 facing each other by being bent by the bending part 222 that is, the two parts of the extension part 224 extending from both ends of the bending part 222 are the first It may be referred to as a first extension part 224a and a second extension part 224b.
- the reinforcing member 220 may sandwich the two surfaces of the cell case 114 between the bending portion 222 and the connecting portion 226 so that the two surfaces are fixed.
- the reinforcing member 220 may be provided to correspond to the sealing portion 116 formed at both ends 114a and 114b of the cell case 114 .
- the reinforcing member 220 may be provided to correspond to a portion of the cell case 114 where the electrode leads 111 and 112 are located or a portion where the lead film 118 is located.
- the reinforcing member 220 may have a gap between the first extension part 224a and the second extension part 224b to insert the two surfaces of the cell case 114, that is, the ends of the battery cell 110. At this time, the size of the gap may be wide enough to allow the end of the battery cell 110 to be inserted, but narrow enough to prevent the end of the inserted battery cell 110 from escaping. At this time, it may be preferable that the gap between the first extension part 224a and the second extension part 224b is constant according to its position. This may be for the reinforcing member 220 to evenly support the two surfaces of the cell case 114 .
- a bent portion 223 may be formed between the bending portion 222 and the extension portion 224 .
- the bent portion 223 may be a portion bent toward the inside of the reinforcing member 220 between the bending portion 222 and the extension portion 224 . Since the bending part 222 mainly has a round shape having a curvature, when the extension part 224 is connected from the bending part 222 without the bending part 223, the maximum diameter of the bending part 222 is the first It may be the size of the gap between the extension part 224a and the second extension part 224b.
- the maximum diameter of the bending part 222 and the first extension part 224a and the second extension part 224b are formed. Gap sizes can be formed differently, allowing more freedom in design.
- the maximum diameter may mean the inner diameter of the bending portion 222 .
- the maximum distance in the direction from the first extension portion 224a to the second extension portion 224b in the bending portion 222 is described above. It can be replaced with the maximum diameter.
- the first extension 224a and the second extension 224b may be widened.
- the bending portion 220 The curvature may be reduced by receiving tension, and accordingly, the connection part 226 located at the end of the extension part 224 may receive excessive pressure by widening the gap between the first extension part 224a and the second extension part 224b.
- the bent portion 223 is formed in the reinforcing member 220, the first extension portion 224a and the second extension portion 224a and the second extension portion are formed by deformation of the bent portion 223 when the curvature value of the bending portion 222 decreases. Since the gap between 224b is widened as a whole, the above problem can be minimized.
- connection part 226 may be a part for connecting one ends of the first extension part 224a and the second extension part 224b to each other. Through the connecting portion 226, the reinforcing member 220 can maintain its shape and stably support the end of the battery cell 110.
- the connecting portion 226 may be provided in various shapes.
- connection part 226 may have a shape extending from one of the first extension part 224a and the second extension part 224b to the other one.
- connection portion 226 may be a portion fixed to the first extension portion 224a and extending toward the second extension portion 224b.
- a hooking part may be formed at a portion of the connecting part 226 that comes into contact with the second extension part 224b, and the hooking part is caught on the second extension part 224b so that the first extension part 224a and the second extension part (224b) can be stably coupled.
- the connecting portion 226 may extend from each of the first extension portion 224a and the second extension portion 224b, as shown in FIG. 9, and may be formed by twisting their ends together. This may be referred to as a twist shape. Since the connection part 226 provided in a twisted shape is formed by twisting the ends of the first extension part 224a and the second extension part 224b, the formation position of the connection part 226 can be free. Specifically, even if the first extension part 224a and the second extension part 224b are formed to be somewhat long, the reinforcing member 220 and the battery cell 110 can be perfectly coupled by adjusting the position of the connection part 226. there is.
- the shape of the connecting portion 226 should not be limited by the above-described examples and drawings, and may be provided in various shapes not mentioned.
- 10 is a view showing an example of a battery cell according to another embodiment of the present invention.
- 11 is a view showing another example of a battery cell according to another embodiment of the present invention.
- a reinforcing tape 210 and a reinforcing member 220 may be provided in the weak area 120 of the battery cell 110 according to the present embodiment.
- the reinforcing tape 210 and the reinforcing member 220 are provided to the battery cell 110, when a gas pocket is formed inside the battery cell 110, the reinforcing member 220 shear force applied to the sealing portion 116 , and the reinforcing tape 210 may prevent the sealing portion 116 from being opened.
- the reinforcing tape 210 is provided at the outermost end of the sealing portion 116, outside the sealing portion 116, or at the outermost end of the cell case 114, specifically, close to the protruding electrode leads 111 and 112 may be desirable. Meanwhile, since detailed descriptions of the reinforcing tape 210 and the reinforcing member 220 have been sufficiently described through the above-described embodiments, detailed descriptions thereof will be omitted in the present embodiment.
- the aforementioned battery cell 110 may be included in a battery module or battery pack.
- the battery pack may be formed by packaging one or more battery modules in a pack case.
- the battery module may be one or more battery cells 110 modularized.
- the battery cells 110 included in the battery pack may not be packaged in a separate frame like a battery module, but may be directly mounted in a pack case of the battery pack.
- the battery pack may further include a battery management system (BMS) that manages the temperature or voltage of the battery, a cooling device, and the like.
- BMS battery management system
- a battery module including the aforementioned battery cell 110 and a battery pack including the same may be applied to various devices.
- a device may be applied to means of transportation such as an electric bicycle, an electric vehicle, or a hybrid vehicle, but the present invention is not limited thereto and is applicable to various devices capable of using a battery module and a battery pack including the battery module, which is also applicable to the present invention. It belongs to the scope of the right of invention.
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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
Claims (11)
- 양극, 음극 및 상기 양극과 음극 사이에 개재되는 분리막을 포함하는 전극 조립체,상기 전극 조립체가 수납되는 셀 케이스, 및상기 전극 조립체와 연결되며, 상기 셀 케이스의 일 단부로부터 돌출되는 전극 리드를 포함하고,상기 셀 케이스는 상기 전극 조립체를 수납하는 수납부 및 상기 셀 케이스의 가장자리에 형성되어 상기 전극 조립체를 밀봉하는 실링부를 포함하며,상기 실링부에 의해 결합된 상기 셀 케이스의 외면에는 보강 부재가 위치하는 전지셀.
- 제1항에 있어서,상기 보강 부재는 상기 실링부와 대응되는 위치에 위치하는 전지셀.
- 제1항에 있어서,상기 보강 부재는 상기 셀 케이스에서 상기 전극 리드와 대응되는 위치에 위치하는 전지셀.
- 제1항에 있어서,상기 보강 부재는 길이와 폭을 가지는 전지셀.
- 제1항에 있어서,상기 보강 부재는 곡률을 가지도록 휘어진 벤딩부, 상기 벤딩부로부터 연장되는 연장부, 상기 연장부의 양단이 연결된 연결부를 포함하는 전지셀.
- 제5항에 있어서,상기 벤딩부와 상기 연장부 사에는 절곡부가 형성된 전지셀.
- 제5항에 있어서,상기 연장부는 상기 벤딩부의 양 말단으로부터 연장되는 제1 연장부 및 제2 연장부를 포함하고,상기 제1 연장부 및 제2 연장부 사이의 갭은 상기 벤딩부의 최대 직경보다 작은 값을 가지는 전지셀.
- 제7항에 있어서,상기 연결부는 제1 연장부로부터 제2 연장부로 연장되는 형상을 가지고, 상기 연결부에서 제2 연장부와 접촉하는 부분에는 걸림부가 형성된 전지셀.
- 제7항에 있어서,상기 연결부는 제1 연장부 및 제2 연장부로부터 연장된 부분이 서로 꼬임으로써 형성되는 전지셀.
- 제1항에 있어서,상기 실링부에 의해 결합된 상기 셀 케이스의 외면에는 보강 테이프가 제공된 전지셀.
- 제1항에 따른 적어도 하나의 전지셀을 포함하는 전지 모듈.
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CN202280054098.1A CN117769782A (zh) | 2021-09-02 | 2022-08-24 | 电池单体和包括该电池单体的电池模块 |
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KR20130065286A (ko) * | 2011-12-09 | 2013-06-19 | 삼성에스디아이 주식회사 | 이차 전지 |
KR20140061153A (ko) * | 2012-11-13 | 2014-05-21 | 주식회사 엘지화학 | 파우치형 이차 전지 및 이를 포함하는 디바이스 |
KR20140130032A (ko) * | 2013-04-30 | 2014-11-07 | 후지모리 고교 가부시키가이샤 | 밀봉구 부재 및 축전 장치용 용기 |
KR20210088172A (ko) * | 2020-01-06 | 2021-07-14 | 주식회사 엘지에너지솔루션 | 밀봉부재를 포함하는 파우치형 이차전지 |
KR20210116869A (ko) | 2020-03-18 | 2021-09-28 | 한국화학연구원 | 라디칼계 메카노크로믹 단량체 및 이를 이용한 자가보고 고분자 |
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- 2022-08-24 CN CN202280054098.1A patent/CN117769782A/zh active Pending
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KR100890160B1 (ko) * | 2008-10-16 | 2009-03-25 | 주식회사 엘지화학 | 케이스 열융착 부위의 밀봉성이 향상된 이차전지 |
KR20130065286A (ko) * | 2011-12-09 | 2013-06-19 | 삼성에스디아이 주식회사 | 이차 전지 |
KR20140061153A (ko) * | 2012-11-13 | 2014-05-21 | 주식회사 엘지화학 | 파우치형 이차 전지 및 이를 포함하는 디바이스 |
KR20140130032A (ko) * | 2013-04-30 | 2014-11-07 | 후지모리 고교 가부시키가이샤 | 밀봉구 부재 및 축전 장치용 용기 |
KR20210088172A (ko) * | 2020-01-06 | 2021-07-14 | 주식회사 엘지에너지솔루션 | 밀봉부재를 포함하는 파우치형 이차전지 |
KR20210116869A (ko) | 2020-03-18 | 2021-09-28 | 한국화학연구원 | 라디칼계 메카노크로믹 단량체 및 이를 이용한 자가보고 고분자 |
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CN117769782A (zh) | 2024-03-26 |
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