WO2023059075A1 - 전극 조립체, 원통형 전지 및 이를 포함하는 시스템 - Google Patents
전극 조립체, 원통형 전지 및 이를 포함하는 시스템 Download PDFInfo
- Publication number
- WO2023059075A1 WO2023059075A1 PCT/KR2022/015012 KR2022015012W WO2023059075A1 WO 2023059075 A1 WO2023059075 A1 WO 2023059075A1 KR 2022015012 W KR2022015012 W KR 2022015012W WO 2023059075 A1 WO2023059075 A1 WO 2023059075A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tubular support
- electrode assembly
- wireless
- cavity
- cylindrical battery
- Prior art date
Links
- 238000004804 winding Methods 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims description 10
- 230000005856 abnormality Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 13
- 230000008961 swelling Effects 0.000 description 13
- -1 lithium chalcogenide compounds Chemical class 0.000 description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 9
- 239000010410 layer Substances 0.000 description 9
- 239000011149 active material Substances 0.000 description 7
- 238000013021 overheating Methods 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000002952 polymeric resin Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910000925 Cd alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 229910013063 LiBF 4 Inorganic materials 0.000 description 1
- 229910013684 LiClO 4 Inorganic materials 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 229910015643 LiMn 2 O 4 Inorganic materials 0.000 description 1
- 229910014689 LiMnO Inorganic materials 0.000 description 1
- 229910013290 LiNiO 2 Inorganic materials 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000006182 cathode active material Substances 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000002739 metals Chemical class 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
- 239000005486 organic electrolyte Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
-
- 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
- H01M10/0422—Cells or battery with cylindrical casing
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/46—Accumulators structurally combined with charging apparatus
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—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
-
- 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
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
-
- 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 an electrode assembly, a cylindrical battery, and a system, and more particularly, to an electrode assembly having an improved core structure, a cylindrical battery, and a system including the same.
- cylindrical batteries are widely used in electric vehicles, electric bicycles, and electric two-wheeled vehicles, form factors are increasing to increase output and capacity of cylindrical batteries.
- the form factors of cylindrical cells are represented by 1865, 2170, 4680, etc.
- the first two numbers represent the diameter of the cylindrical battery, and the remaining numbers represent the height of the cylindrical battery.
- the 4680 is the form factor of a cylindrical cell with a diameter of 46 mm and a height of 80 mm.
- a cylindrical battery includes an electrode assembly wound by interposing a separator between two elongated electrode sheets having different polarities.
- a winding means such as a center pin or bobbin is used.
- the winding means may be removed to improve the impregnability of the electrolyte in the center of the electrode assembly and to secure a tab welding path.
- a cavity is formed along the longitudinal direction of the electrode assembly at the site where the winding means is removed.
- Heat generated during charging and discharging is one of the causes of swelling of the electrode assembly. Therefore, as the form factor of the cylindrical battery increases, the swelling phenomenon is more easily caused.
- FIG. 1 is a view showing how the core of the electrode assembly 10 collapses without maintaining its shape when a swelling phenomenon occurs in the prior art.
- reference numeral 11 denotes a first electrode sheet having a first polarity
- reference numeral 12 denotes a second electrode sheet having a second polarity opposite to the first polarity
- reference numeral 13 denotes a first electrode sheet ( 11) and a separator sheet interposed between the second electrode sheet 12.
- the separation membrane sheet 13 is two sheets. One sheet is interposed between the first electrode sheet 11 and the second electrode sheet 12, and the other sheet is used as a film for winding two stacked electrode sheets facing each other with a separator sheet interposed therebetween.
- the stress is concentrated in the portion 14 of the electrode sheet with a small number of turns.
- the portion 14 with a small number of turns of the electrode sheet is because the strength of the portion 14 is relatively weak.
- the cavity 15 of the dotted line portion 14 fails to maintain its shape and begins to collapse.
- the swelling of the electrode assembly 10 further progresses, the collapse of the cavity 15 is further accelerated as the collapse of the cavity 15 propagates to the adjacent region.
- the collapse of the cavity 15 forms a fine gap between the first electrode sheet 11 and the second electrode sheet 12 in the core of the electrode assembly 10 . Since an electrochemical reaction does not occur in the portion where the gap is formed, the performance of the cylindrical battery suddenly deteriorates. This problem becomes more prevalent as the form factor increases. This is because the diameter of the cavity 15 also increases as the diameter of the winding means used when winding the electrode assembly 10 increases. As the diameter of the cavity 15 increases, the area of the electrode assembly 10 near the cavity 15 becomes more susceptible to stress.
- the separator sheet 13 interposed between the first electrode sheet 11 and the second electrode sheet 12 is torn, and the first electrode sheet 11 and the second electrode sheet 12 ) may cause an internal short circuit between them.
- a large current flows and the temperature rises rapidly. Therefore, internal short circuit due to swelling of the electrode assembly 10 is a major cause of ignition of the cylindrical battery.
- An object of the present invention is to provide an electrode assembly having an improved core structure to resist swelling while maintaining the cavity of the core as it is, and a cylindrical battery including the same.
- Another technical problem of the present invention is to provide an electrode assembly equipped with a wireless sensor means capable of detecting in advance that there is a sign of swelling to the extent that a core cavity collapses, and a cylindrical battery including the same.
- Another technical problem of the present invention is to provide an electrode assembly equipped with a wireless sensor means capable of detecting in advance that the temperature of the electrode assembly core is likely to rise rapidly due to an internal short circuit and the like, and a cylindrical battery including the same.
- Another technical problem of the present invention is to provide a system capable of remotely monitoring the pressure and/or temperature of a region near the core of a cylindrical battery.
- An electrode assembly according to the present invention for achieving the above technical problem is an electrode assembly in which a first electrode sheet, a second electrode sheet, and a separator sheet interposed therebetween are wound in one direction, along the central axis of the winding of the electrode assembly. It is characterized in that a cavity is provided and a mesh tubular support is installed along the longitudinal direction of the cavity.
- the separator sheet includes a first separator sheet and a second separator sheet, and the first separator sheet; the second electrode sheet; the second separator sheet; And the first electrode sheet may be wound in one direction in a sequentially stacked state.
- the reticulated tubular support has a structure in which wires and/or straps form a reticulated tube.
- the reticulated tubular support may be a stent support.
- the reticulated tubular support is stretchable in radial and/or longitudinal directions.
- a gap may be formed between the reticulated tubular support and the inner wall of the cavity.
- a wireless sensor may be attached to the reticulated tubular support.
- the wireless sensor is a wireless pressure sensor, and the wireless pressure sensor may be installed on at least one or more points on an outer surface or an inner surface of the mesh tubular support.
- the wireless sensor is a wireless temperature sensor, and the wireless temperature sensor may be installed at one or more points on an outer surface or an inner surface of the mesh tubular support.
- a cylindrical battery according to another aspect of the present invention for achieving the above technical problem is an electrode assembly in which a first electrode sheet, a second electrode sheet, and a separator sheet interposed therebetween are wound in one direction, and An electrode assembly provided with; a mesh tubular support installed along the longitudinal direction of the cavity; a case in which the electrode assembly is accommodated and provided with an opening at one side; It may include; a cap assembly coupled to be insulated to the open portion of the case.
- the separator sheet includes a first separator sheet and a second separator sheet, and the first separator sheet; the second electrode sheet; the second separator sheet; And the first electrode sheet may be wound in one direction in a sequentially stacked state.
- the reticulated tubular support may have a structure in which wires and/or straps form reticulated tubes.
- the reticulated tubular support may be a stent support.
- the reticulated tubular support can be stretchable in radial and/or longitudinal directions.
- a gap may be formed between the reticulated tubular support and the inner wall of the cavity.
- a wireless sensor may be attached to the reticulated tubular support.
- the wireless sensor is a wireless pressure sensor, and the wireless pressure sensor may be installed on at least one or more points on an outer surface or an inner surface of the mesh tubular support.
- the wireless sensor is a wireless temperature sensor, and the wireless temperature sensor may be installed at one or more points on an outer surface or an inner surface of the mesh tubular support.
- one end of the mesh tubular support may be fixed to the cap assembly or the bottom plate of the case through a fixing tab.
- one end of the mesh tubular support may be fixed to the inner wall of the cavity through a fixing sleeve.
- a system for achieving the above technical problem is an electrode assembly in which a first electrode sheet, a second electrode sheet, and a separator sheet interposed therebetween are wound in one direction, and a cavity is provided along the winding central axis.
- An electrode assembly ; a mesh tubular support installed along the longitudinal direction of the cavity; a case in which the electrode assembly is accommodated and provided with an opening at one side; and a cap assembly insulatedly coupled to the open portion of the case; a cylindrical battery including; a wireless sensor attached to the reticulated tubular support to wirelessly transmit a pressure sensing value or a temperature sensing value; and a detection detection device that receives the pressure sensing value or the temperature sensing value from the wireless sensor and monitors the pressure or temperature at the point where the wireless sensor is installed.
- the charging or discharging of the cylindrical battery is stopped by controlling a switch installed on a line through which the charging current or the discharging current of the cylindrical battery flows, or , It may be configured to generate a warning message indicating that there is a sign of abnormality inside the cylindrical battery and output it through a display.
- the rigidity of the core can be reinforced by inserting the mesh tubular support into the cavity of an electrode assembly used in a cylindrical battery. As a result, even if the electrode assembly swells, collapse of the cavity is prevented, and internal resistance increases or internal short-circuiting in the core of the electrode assembly can be prevented.
- the wireless pressure sensor by attaching the wireless pressure sensor to the mesh tubular support, it is possible to detect in advance that there is a tendency for swelling to the extent that the cavity of the electrode assembly collapses. In addition, when the actual cavity starts to collapse, the degree of stress applied to the corresponding point and the location of the corresponding point can be accurately detected.
- the wireless temperature sensor by attaching the wireless temperature sensor to the mesh tubular support, it is possible to sense in advance that there is a sign of overheating in the cavity of the electrode assembly. In addition, when overheating occurs, the temperature and location of the corresponding point can be accurately detected.
- FIG. 1 illustratively shows how a cavity of a core collapses when an electrode assembly according to the prior art is swelled.
- FIG. 2 is a cross-sectional view of an electrode assembly according to an embodiment of the present invention cut in a radial direction.
- FIG. 3 is a process chart showing a process of manufacturing an electrode assembly according to an embodiment of the present invention.
- FIG. 4 is a cross-sectional view of an electrode assembly according to an embodiment of the present invention cut in a longitudinal direction.
- FIG. 5 is a diagram illustrating various structures of a stent supporter according to an embodiment of the present invention.
- FIG. 6A is a cross-sectional view of a cylindrical battery including an electrode assembly according to an embodiment of the present invention
- FIG. 6B is an exploded perspective view of a cap assembly according to an embodiment of the present invention.
- FIG. 7 is a block diagram showing the configuration of a wireless pressure sensor and a detection device according to an embodiment of the present invention.
- FIG. 8 is a block diagram showing the configuration of a wireless temperature sensor and a detection device according to an embodiment of the present invention.
- first and second are used to describe various members, components, regions, layers and/or portions, but these members, components, regions, layers and/or portions are limited by these terms. It is self-evident that These terms are only used to distinguish one element, component, region, layer or section from another region, layer or section. Accordingly, a first member, component, region, layer or section described in detail below may refer to a second member, component, region, layer or section without departing from the teachings of the present invention.
- Space-related terms such as “beneath,” “below,” “lower,” “above,” and “upper” are associated with an element or feature shown in a drawing. Used for easy understanding of other elements or features. Terminology related to this space is for easy understanding of the present invention according to various process conditions or use conditions of the present invention, and is not intended to limit the present invention. For example, if an element or feature in a drawing is flipped over, an element described as “lower” or “below” becomes “above” or “above.” Therefore, “below” is a concept encompassing “upper” or "below”.
- FIG. 2 is a cross-sectional view of an electrode assembly 100 according to an embodiment of the present invention cut in a radial direction
- FIG. 3 is a process diagram illustrating a process of manufacturing the electrode assembly 100 according to an embodiment of the present invention.
- Figure 3 (a) is a cross-sectional view of the components
- Figure 3 (b) is a plan view of the components
- 4 is another cross-sectional view of the electrode assembly 100 according to the embodiment of the present invention in the longitudinal direction.
- the electrode assembly 100 includes a first electrode sheet 110 having a first polarity, a second electrode sheet 120 having a second polarity, and a separator sheet 130. .
- the first polarity and the second polarity are opposite to each other.
- the first polarity is the negative electrode and the second polarity is the positive electrode.
- the first polarity may be an anode and the second polarity may be a cathode.
- the electrode assembly 100 sequentially laminates a first separator sheet 130a, a second electrode sheet 120, a second separator sheet 130b, and a first electrode sheet 110, and It can be produced by continuously winding a laminate of them in one direction.
- the winding state of the sheets may be fixed through a hot press process in which heat and pressure are applied to the electrode assembly 100 .
- the second separator sheet 130b serves to electrically separate the first electrode sheet 110 and the second electrode sheet 120 .
- the first electrode sheet 110, the second separator sheet 130b, and the second electrode sheet 120 constitute a cell capable of electrochemically charging or discharging.
- the first separator sheet 130a is used as a film for winding cells.
- the first and second separator sheets 130a and 130b are made of an insulating porous film.
- the porous film may be a polyolefin-based porous film.
- a coating layer of ceramic particles may be provided on the surface of the porous film.
- the first and second separator sheets 130a and 130b may be made of the same material or different materials.
- the coating of ceramic particles may be formed only on the second separator sheet 130b.
- the first and second separator sheets 130a and 130b may have different melting points even though they are made of the same material.
- the first electrode sheet 110 has a structure in which the active material 110b of the first polarity is coated on one or both surfaces of the current collector 110a.
- the second electrode sheet 120 has a structure in which the active material 120b of the second polarity is coated on one side or both sides of the current collector 120a.
- the current collector for the positive electrode one obtained by surface-treating the surface of stainless steel, nickel, titanium, calcined carbon, aluminum, or stainless steel with carbon, nickel, titanium, silver, or the like may be used.
- lithium-containing transition metal oxides and lithium chalcogenide compounds may be used.
- Representative examples are LiCoO 2 , LiNiO 2 , LiMnO 2 , LiMn 2 O 4 , LiFePO 4 or Li 1+z Ni 1-xy Co x M y O 2 (0 ⁇ x ⁇ 1, 0 ⁇ y ⁇ 1, 0 ⁇ x +y ⁇ 1, 0 ⁇ z ⁇ 1, M is a metal such as Al, Sr, Mg, La, Mn) may be used.
- the current collector for the negative electrode may be stainless steel, aluminum, nickel, titanium, calcined carbon, copper or stainless steel whose surface is treated with carbon, nickel, titanium, silver, etc., and an aluminum-cadmium alloy or the like may be used. .
- carbon materials such as crystalline carbon, amorphous carbon, carbon composites, and carbon fibers, lithium metal, lithium alloys, silicon, and silicon alloys may be used.
- the present invention is characterized by the structure of the electrode assembly 100, it is not limited by the types of materials constituting the cathode/cathode current collector, the cathode/cathode active material, and the separator.
- the first electrode sheet 110 has an uncoated portion 111 in a predetermined area.
- the uncoated portion 111 is a portion that is not coated with an active material.
- the first electrode sheet 110 includes a first tab 112 attached to the uncoated portion 111 .
- the first tab 112 may be ultrasonically welded to the uncoated portion 111 .
- the uncoated portion 111 may be formed at one end of the current collector. In another example, the uncoated portion 111 may be formed in the middle of the active material layer 110b.
- the second electrode sheet 120 has an uncoated portion 121 in a predetermined area.
- the second electrode sheet 120 includes a second tab 122 attached to the uncoated portion 121 .
- the second tab 122 may be ultrasonically welded to the uncoated portion 121 .
- the uncoated portion 121 may be formed in the middle of the active material layer 120b. In another example, the uncoated portion 121 may be formed at one end of the current collector 120a.
- a cavity 140 is formed in the core of the electrode assembly 100 according to the embodiment of the present invention.
- the cavity 140 is formed when the winding means (bobbin) used in the winding process of the electrode assembly 100 is removed.
- the cavity 140 of the electrode assembly 100 is provided with a mesh tubular support 150 inserted along its longitudinal direction.
- the reticulated tubular support 150 has a structure in which wires and/or straps form reticulated tubes.
- the mesh tubular support 150 may be a stent support.
- a stent is a medical member inserted into a narrowed blood vessel or digestive tract.
- a stent has a structure in which wires and/or straps form a mesh tube.
- FIG. 5 is a diagram illustrating various structures of a stent supporter according to an embodiment of the present invention.
- the shape, thickness, width, pitch, etc. of the wire and/or strap may be determined using a finite element analysis tool in consideration of the stiffness required for the mesh tubular support 150.
- the mesh tubular support 150 is elastically stretchable in the radial and/or longitudinal directions. Therefore, the mesh tubular support 150 inserted into the cavity 140 of the electrode assembly 100 absorbs the stress generated around the cavity 140 when the electrode assembly 100 is swelled through elastic deformation, thereby causing the cavity 140 to expand. ) to prevent collapse.
- the mesh tubular support 150 is not only hollow inside, but also has a plurality of openings formed in the wall. Therefore, the mesh tubular support 150 does not hinder the flow of the electrolyte in the process of impregnating the electrode assembly 100 with the electrolyte and does not reduce the energy density of the cylindrical battery.
- the material of the wire and/or strap may be appropriately selected in consideration of the rigidity of the mesh tubular support 150 .
- the material of the wire and/or strap may be selected from single metals, alloys or plastics.
- the material of the wire and/or strap may be stainless steel or a shape memory alloy.
- the mesh tubular support 150 may be manufactured to have a reduced radius and length, and then installed while expanding in the radial and longitudinal directions within the cavity 140 .
- This installation method is well known in the field of stent technology. Even when installing the reticulated tubular support 150, a conventional stent installation method may be employed substantially the same.
- FIG. 6A is a cross-sectional view of a cylindrical battery 200 including an electrode assembly 100 according to an embodiment of the present invention
- FIG. 6B is an exploded perspective view of a cap assembly 220 according to an embodiment of the present invention.
- the cylindrical battery 200 includes an electrode assembly 100, a case 210 in which the electrode assembly 100 is accommodated and provided with an opening on one side, and a case 210 that seals the opening of the case 210.
- a cap assembly 220 is included.
- the case 210 includes a circular bottom portion 211 and a sidewall portion 212 extending a certain length upward from the bottom portion 211 .
- the upper part of the case 210 may be open. Therefore, the electrode assembly 100 may be inserted into the case 210 together with the electrolyte solution during the assembly process.
- the case 210 may be formed of steel, steel alloy, aluminum, aluminum alloy, or an equivalent thereof, but the material is not limited thereto.
- the case 210 has a beading part 213 recessed into the lower portion of the cap assembly 220 so that the electrode assembly 100 does not escape to the outside.
- a crimping part 214 bent to may be formed.
- the electrolyte solution is an organic liquid containing a salt injected so that lithium ions can move between the electrodes constituting the electrode assembly 100, and is a mixture of lithium salts such as LiPF 6 , LiBF 4 , and LiClO 4 and high-purity organic solvents. It may be made including a phosphorus non-aqueous organic electrolyte solution, but is not limited thereto in the present invention.
- the cap assembly 220 includes a cap cover 222 having one or more through holes 221 formed therein, and a safety plate fixed to the lower portion of the cap cover 222 so as to surround an edge of the cap cover 222 and having a vent notch formed on an upper surface thereof. 223, the connection ring 224 installed under the safety plate 223, the connection plate 225 coupled to the connection ring 224, and the cap cover 222, the safety plate 223, the connection ring 224 ) and an insulating gasket 226 insulating the connection plate 225 from the side wall portion 211 of the case 110 .
- Portions where the cap cover 222, the safety plate 223, the connection ring 224, and the connection plate 225 come into contact with each other may be selectively electrically connected to each other using means such as welding or bonding.
- the cap cover 222, the safety plate 223, the connection ring 224 and the connection plate 225 may be formed of steel, steel alloy, aluminum, aluminum alloy or equivalents thereof, but the material is not limited here. .
- An upper insulating plate 230 and a lower insulating plate 240 are respectively coupled to the upper and lower portions of the electrode assembly 100 .
- the upper insulating plate 230 and the lower insulating plate 240 are made of an insulating material.
- the upper insulating plate 230 and the lower insulating plate 240 may be made of a polymer resin such as polyethylene, polypropylene, polyethylene terephthalate (PET), polytetrafluoroethylene (PTFE), or polyimide, but the material is not limited here. no.
- a polymer resin such as polyethylene, polypropylene, polyethylene terephthalate (PET), polytetrafluoroethylene (PTFE), or polyimide, but the material is not limited here. no.
- the first tab 112 of the first electrode sheet 110 extends downward through an opening formed in the lower insulating plate 240 and is parallel to the bottom plate 211 of the case 210. it is extended In addition, the end of the first tab 112 is welded to the bottom plate 211 .
- the second tab 122 of the second electrode sheet 120 extends upward through an opening formed in the upper insulating plate 230 and then connects the connection plate 225 of the cap assembly 220. bent towards In addition, the end of the second tab 122 is fixed to the connection plate 225 through welding.
- the mesh tubular support 150 is inserted into the cavity 140 formed in the core of the electrode assembly 100 .
- the outer diameter of the reticulated tubular support 150 is smaller than the diameter of the cavity 140 of the electrode assembly 100. In this case, a gap may be formed between the surface of the mesh tubular support 150 and the inner wall of the cavity 140 . In another example, the outer diameter of the reticulated tubular support 150 corresponds to the diameter of the cavity 140 of the electrode assembly 100 .
- the upper end of the mesh tubular support 150 may be fixed to the lower surface of the connection plate 225 through the fixing tab 250.
- One end of the fixing tab 250 is welded to the upper inner wall or the upper outer wall of the mesh tubular support 150 .
- the other end of the fixing tab 250 protrudes upward through an opening formed in the upper insulating plate 230 and extends to the connecting plate 225 .
- the other end of the fixing tab 250 may be bent parallel to the connecting plate 225 and then firmly welded to the lower surface of the fixing plate 255 . At this time, the welding position of the fixing tab 250 may be appropriately selected so as not to cause interference with the second tab 122 .
- the fixing tab 250 may be formed of steel, steel alloy, aluminum, aluminum alloy, or an equivalent thereof, but the material is not limited thereto.
- a fixing sleeve 260 may be interposed between the lower end of the mesh tubular support 150 and the inner wall of the cavity 140 of the electrode assembly 100 .
- the fixed sleeve 260 has a tubular shape, and the wall thickness of the fixed sleeve 260 corresponds to the gap between the reticulated tubular support 150 and the cavity 140 .
- the fixed sleeve 260 is made of an insulating material.
- the fixing sleeve 260 may be made of a polymer resin such as polyethylene, polypropylene, polyethylene terephthalate (PET), polytetrafluoroethylene (PTFE), or polyimide, but the material is not limited thereto.
- the lower end of the mesh tubular support 150 may be fixed using a fixing tab (not shown) without using the fixing sleeve 260 .
- one end of the fixing tab is welded to the outer wall or inner wall of the bottom of the mesh tubular support 150 .
- the other end of the fixing tab may extend to the bottom plate 211 through the opening of the lower insulating plate 240 .
- the other end of the fixing tab may be welded and fixed to the bottom plate 211 without causing interference with the first tab 112 .
- the upper end of the mesh tubular support 150 may be fixed using a fixing sleeve (not shown) without using the fixing tab 250.
- the method of fixing the top and bottom of the mesh tubular support 150 may be the same or different.
- the upper and lower ends of the mesh tubular support 150 may be selectively fixed using various known structures other than the fixing tab and the fixing sleeve described above.
- At least one wireless sensor 270 may be attached to the surface of the mesh tubular support 150 .
- the wireless sensor 270 may be installed at a plurality of points along the longitudinal direction of the mesh tubular support 150 .
- the wireless sensor 270 is preferably a subminiature type.
- the wireless sensor 270 is installed in the upper, middle, and lower portions of the mesh tubular support 150, respectively.
- the number of locations where the wireless sensors 270 are installed may be increased or decreased.
- the wireless sensor 270 may be a wireless pressure sensor 300 as shown in FIG. 7 .
- the wireless pressure sensor 300 is an element that senses the contact pressure when an external object is contacted and transmits the pressure sensing value wirelessly.
- the wireless pressure sensor 300 measures the driving voltage generated by the wireless charging unit 310 having a magnetoelectric composite (ME composite) that generates a voltage according to a magnetic field applied from the outside and the wireless charging unit 310. It may include a pressure sensor unit 330 that is driven through and senses the pressure and wirelessly transmits the pressure sensing value to the outside through the antenna 320.
- ME composite magnetoelectric composite
- the wireless charging unit 310 includes a magnetostrictive material that converts magnetic energy according to a magnetic field acting from the outside into strain energy, and a piezoelectric material that is combined with the magnetostrictive material and generates a voltage through the strain energy. It may contain a piezoelectric material.
- the wireless pressure sensor 300 can detect that the inner wall of the cavity 140 is deformed by stress when a swelling phenomenon occurs in the electrode assembly 100, and wirelessly transmit the pressure sensing value to the outside. That is, when the inner wall of the cavity 140 is deformed and the inner wall contacts the wireless pressure sensor 300, the wireless pressure sensor 300 may wirelessly transmit a pressure sensing value corresponding to the strength of the contact.
- a detection device 400 may be provided for receiving the pressure sensing value.
- the pressure sensing value When the pressure sensing value is detected through the detection device 400, it may be detected in advance that there is a tendency for the cavity 140 of the electrode assembly 100 to collapse due to a swelling phenomenon.
- each wireless pressure sensor 300 may further transmit a location ID.
- the detection device 400 can detect the pressure sensing value for each position of the wireless pressure sensor 300, it is possible to accurately identify a position where the cavity 140 is prone to collapse.
- the detection device 400 may periodically apply a magnetic field to the wireless pressure sensor 300 to operate the wireless pressure sensor 300 . Then, a driving voltage is generated in the wireless charging unit 310 of the wireless pressure sensor 300 and applied to the pressure sensor unit 330 . Then, the pressure sensor unit 330 may generate a pressure sensing value according to the contact of an external object and wirelessly transmit the pressure sensing value to the detection device 400 through the antenna 320 .
- the wireless pressure sensor 300 may be installed at a plurality of points along the vertical direction of the mesh tubular support 150 . In this case, it is possible to accurately detect where the cavity has signs of collapse.
- a gap is formed between the mesh tube support 150 and the inner wall of the cavity 140 of the electrode assembly 100. It is preferable. The gap is preferably adjusted to a level where the wireless pressure sensor does not directly contact the inner wall of the cavity 140.
- the wireless pressure sensor 300 When the wireless pressure sensor 300 is attached to the inner wall of the mesh tubular support 150, there may be no gap between the mesh tube support 150 and the inner wall of the cavity 140 of the electrode assembly 100. In this case, the stress generated when the cavity 140 collapses deforms the wire and/or the strap on which the wireless pressure sensor 300 is installed, and in this process, the pressure can be sensed.
- the wireless sensor may be a wireless temperature sensor 500 as shown in FIG. 8 .
- the wireless temperature sensor 500 is an element that senses the temperature of a sensor installation point and wirelessly transmits a temperature sensing value.
- the wireless temperature sensor 500 is provided with a magnetoelectric composite (ME composite) that generates a voltage according to a magnetic field applied from the outside and the wireless charging unit 510 through a driving voltage generated by the wireless charging unit 510 It may include a temperature sensor unit 530 that is driven to sense the temperature and wirelessly transmits the temperature sensing value through the antenna 520 .
- the temperature sensor unit 530 may include a subminiature thermocouple.
- the wireless charging unit 510 includes a magnetostrictive material that converts magnetic energy according to a magnetic field acting from the outside into strain energy, and a piezoelectric material that is combined with the magnetostrictive material and generates a voltage through the strain energy. It may contain a piezoelectric material.
- the detection device 400 detects a temperature sensing value, it is possible to sense in advance that there is a sign that a rapid temperature rise will occur in the cavity 140 of the electrode assembly 100 .
- the detection device 400 may periodically apply a magnetic field to the wireless temperature sensor 500 to operate the wireless temperature sensor 500 . Then, voltage is generated in the wireless charging unit 510 of the wireless temperature sensor 500 and applied to the temperature sensor unit 530 . Then, the temperature sensor unit 530 may sense the temperature of the sensor installation point to generate a temperature sensing value and transmit the temperature sensing value wirelessly to the detection device 400 through the antenna 520 .
- the wireless temperature sensor 500 may be installed at a plurality of points along the vertical direction of the mesh tubular support 150 . When there are a plurality of wireless temperature sensors 500, each wireless temperature sensor 500 may further transmit a location ID. In this case, since the detection device 400 can detect the temperature sensing value for each location of the wireless temperature sensor 500, it is possible to accurately identify a location where there is a sign of overheating inside the cavity 140.
- the aforementioned cylindrical battery 200, the wireless sensors 300 and 500, and the detection device 400 may constitute one system according to the present invention.
- the detection device 400 may be included in the battery management apparatus 600 that controls charging and discharging of the cylindrical battery 200 .
- the battery management device 600 may be included in a load receiving power from the cylindrical battery 200 .
- the battery management apparatus 600 may monitor a pressure sensing value and/or a temperature sensing value detected by the detection device 400 .
- the battery management device 600 may stop charging or discharging the cylindrical battery 200 when the pressure sensing value and/or the temperature sensing value exceeds a preset threshold. To this end, the battery management device 600 may turn off a switch installed on a line through which a charging current or a discharging current flows.
- the battery management device 600 may generate a warning message indicating that there is a sign of abnormality inside the cylindrical battery 200 and output the warning message through a display.
- the display may be provided in a device receiving energy from the cylindrical battery 200 .
- the display may be an integrated display installed on a dashboard or dashboard.
- the present invention can be usefully used to analyze the stress behavior occurring in the core of the electrode assembly and the cause of the internal short circuit in the design stage of the electrode assembly and the cylindrical battery including the same.
- the present invention can be used to detect in advance signs of overheating due to cavity collapse or internal short circuit occurring in the core portion of the electrode assembly when the cylindrical battery is actually used.
- the rigidity of the core can be reinforced by inserting the mesh tubular support into the cavity of an electrode assembly used in a cylindrical battery. As a result, even if the electrode assembly swells, collapse of the cavity is prevented, and internal resistance increases or internal short-circuiting in the core of the electrode assembly can be prevented.
- the wireless pressure sensor by attaching the wireless pressure sensor to the mesh tubular support, it is possible to detect in advance that there is a tendency for swelling to the extent that the cavity of the electrode assembly collapses. In addition, when the actual cavity starts to collapse, the degree of stress applied to the corresponding point and the location of the corresponding point can be accurately detected.
- the wireless temperature sensor by attaching the wireless temperature sensor to the mesh tubular support, it is possible to sense in advance that there is a sign of overheating in the cavity of the electrode assembly. In addition, when an overheating phenomenon occurs, the corresponding point can accurately detect the temperature and location.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
Claims (20)
- 제1전극 시트, 제2전극 시트 및 이들 사이에 개재된 분리막 시트가 일 방향으로 권취된 전극 조립체에 있어서,상기 전극 조립체의 권취 중심축을 따라 공동이 구비되고,상기 공동의 길이 방향을 따라 망상 튜브형 지지체가 설치된 것을 특징으로 하는 전극 조립체.
- 제1항에 있어서,상기 망상 튜브형 지지체는, 와이어 및/또는 스트랩이 망상의 튜브를 형성한 구조를 구비하는 것을 특징으로 하는 전극 조립체.
- 제2항에 있어서,상기 망상 튜브형 지지체는 스탠트(stent) 지지체임을 특징으로 하는 전극 조립체.
- 제1항에 있어서,상기 망상 튜브형 지지체는 반경 방향 및/또는 길이 방향으로 신축 가능한 것을 특징으로 하는 전극 조립체.
- 제1항에 있어서,상기 망상 튜브형 지지체와 상기 공동의 내벽 사이에 갭이 형성되어 있는 것을 특징으로 하는 전극 조립체.
- 제1항에 있어서,상기 망상 튜브형 지지체에 부착된 무선 센서를 더 포함하는 것을 특징으로 하는 전극 조립체.
- 제6항에 있어서,상기 무선 센서는 무선 압력센서이고,상기 무선 압력센서는 상기 망상 튜브형 지지체의 외부면 또는 내부면의 적어도 하나 이상의 지점에 설치되는 것을 특징으로 하는 전극 조립체.
- 제6항에 있어서,상기 무선 센서는 무선 온도센서이고,상기 무선 온도센서는 상기 망상 튜브형 지지체의 외부면 또는 내부면의 적어도 하나 이상의 지점에 설치되는 것을 특징으로 하는 전극 조립체.
- 제1전극 시트, 제2전극 시트 및 이들 사이에 개재된 분리막 시트가 일 방향으로 권취된 전극 조립체로서, 권취 중심축을 따라 공동이 구비된 것인 전극 조립체;상기 공동의 길이 방향을 따라 설치된 망상 튜브형 지지체;상기 전극 조립체가 수납되며 일측에 개방부가 구비된 케이스; 및상기 케이스의 개방부에 절연 가능하게 결합된 캡 조립체;를 포함하는 것을 특징으로 하는 원통형 전지.
- 제9항에 있어서,상기 망상 튜브형 지지체는, 와이어 및/또는 스트랩이 망상의 튜브를 형성한 구조를 구비하는 것을 특징으로 하는 원통형 전지.
- 제10항에 있어서,상기 망상 튜브형 지지체는 스탠트(stent) 지지체임을 특징으로 하는 원통형 전지.
- 제9항에 있어서,상기 망상 튜브형 지지체는 반경 방향 및/또는 길이 방향으로 신축 가능한 것을 특징으로 하는 원통형 전지.
- 제9항에 있어서,상기 망상 튜브형 지지체와 상기 공동의 내벽 사이에 갭이 형성되어 있는 것을 특징으로 하는 원통형 전지.
- 제9항에 있어서,상기 망상 튜브형 지지체에 부착된 무선 센서를 더 포함하는 것을 특징으로 하는 원통형 전지.
- 제14항에 있어서,상기 무선 센서는 무선 압력센서이고,상기 무선 압력센서는 상기 망상 튜브형 지지체의 외부면 또는 내부면의 적어도 하나 이상의 지점에 설치되는 것을 특징으로 하는 원통형 전지.
- 제14항에 있어서,상기 무선 센서는 무선 온도센서이고,상기 무선 온도센서는 상기 망상 튜브형 지지체의 외부면 또는 내부면의 적어도 하나 이상의 지점에 설치되는 것을 특징으로 하는 원통형 전지.
- 제9항에 있어서,상기 망상 튜브형 지지체의 일측 단부를 상기 캡 조립체 또는 상기 케이스의 바닥판에 고정하는 고정 탭을 포함하는 것을 특징으로 하는 원통형 전지.
- 제9항에 있어서,상기 망상 튜브형 지지체의 일측 단부를 상기 공동의 내벽에 고정하는 고정 슬리브를 포함하는 것을 특징으로 하는 원통형 전지.
- 제1전극 시트, 제2전극 시트 및 이들 사이에 개재된 분리막 시트가 일 방향으로 권취된 전극 조립체로서, 권취 중심축을 따라 공동이 구비된 것인 전극 조립체; 상기 공동의 길이 방향을 따라 설치된 망상 튜브형 지지체; 상기 전극 조립체가 수납되며 일측에 개방부가 구비된 케이스; 및 상기 케이스의 개방부에 절연 가능하게 결합된 캡 조립체;를 포함하는 원통형 전지;상기 망상 튜브형 지지체에 부착되어 압력 센싱값 또는 온도 센싱값을 무선으로 전송하는 무선 센서; 및상기 무선 센서로부터 상기 압력 센싱값 또는 상기 온도 센싱값을 수신하여 상기 무선 센서가 설치된 지점의 압력 또는 온도를 모니터하는 검출 검출 디바이스;를 포함하는 시스템.
- 제19항에 있어서,상기 시스템은 상기 압력 센싱값 또는 상기 온도 센싱값이 미리 설정된 임계치를 초과하는 경우 상기 원통형 전지의 충전전류 또는 방전전류가 흐르는 선로에 설치된 스위치를 제어하여 상기 원통형 전지의 충전 또는 방전을 중단시키거나,상기 원통형 전지의 내부에 이상 조짐이 있음을 나타내는 경고 메시지를 생성하여 디스플레이를 통해 출력하도록 구성된, 시스템.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/268,522 US20240039134A1 (en) | 2021-10-05 | 2022-10-05 | Electrode assembly, cylindrical battery and system comprising the same |
JP2023541732A JP2024503020A (ja) | 2021-10-05 | 2022-10-05 | 電極組立体、円筒型電池及びこれを含むシステム |
EP22878896.4A EP4287328A1 (en) | 2021-10-05 | 2022-10-05 | Electrode assembly, cylindrical battery, and system comprising same |
CN202280010140.XA CN116802862A (zh) | 2021-10-05 | 2022-10-05 | 电极组件、包括该电极组件的圆柱形电池以及系统 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2021-0131993 | 2021-10-05 | ||
KR20210131993 | 2021-10-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023059075A1 true WO2023059075A1 (ko) | 2023-04-13 |
Family
ID=85803589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2022/015012 WO2023059075A1 (ko) | 2021-10-05 | 2022-10-05 | 전극 조립체, 원통형 전지 및 이를 포함하는 시스템 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20240039134A1 (ko) |
EP (1) | EP4287328A1 (ko) |
JP (1) | JP2024503020A (ko) |
KR (1) | KR20230049050A (ko) |
CN (1) | CN116802862A (ko) |
WO (1) | WO2023059075A1 (ko) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08273697A (ja) * | 1995-03-28 | 1996-10-18 | Asahi Chem Ind Co Ltd | 捲回型電池 |
JPH0945361A (ja) * | 1995-08-02 | 1997-02-14 | Alps Electric Co Ltd | 2次電池 |
KR20060118959A (ko) * | 2005-05-18 | 2006-11-24 | 삼성에스디아이 주식회사 | 원통형 리튬 이차 전지 |
KR20090081966A (ko) * | 2008-01-25 | 2009-07-29 | 삼성에스디아이 주식회사 | 이차 전지 |
KR20160053535A (ko) * | 2014-11-05 | 2016-05-13 | 주식회사 비츠로셀 | 내구성을 높인 권취형 전지 |
KR20210131993A (ko) | 2018-12-04 | 2021-11-03 | 엘디아이 파이낸시스 | 작업편의 프로파일을 측정하기 위한 시스템 및 방법 |
-
2022
- 2022-10-05 US US18/268,522 patent/US20240039134A1/en active Pending
- 2022-10-05 EP EP22878896.4A patent/EP4287328A1/en active Pending
- 2022-10-05 KR KR1020220127358A patent/KR20230049050A/ko active Search and Examination
- 2022-10-05 JP JP2023541732A patent/JP2024503020A/ja active Pending
- 2022-10-05 CN CN202280010140.XA patent/CN116802862A/zh active Pending
- 2022-10-05 WO PCT/KR2022/015012 patent/WO2023059075A1/ko active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08273697A (ja) * | 1995-03-28 | 1996-10-18 | Asahi Chem Ind Co Ltd | 捲回型電池 |
JPH0945361A (ja) * | 1995-08-02 | 1997-02-14 | Alps Electric Co Ltd | 2次電池 |
KR20060118959A (ko) * | 2005-05-18 | 2006-11-24 | 삼성에스디아이 주식회사 | 원통형 리튬 이차 전지 |
KR20090081966A (ko) * | 2008-01-25 | 2009-07-29 | 삼성에스디아이 주식회사 | 이차 전지 |
KR20160053535A (ko) * | 2014-11-05 | 2016-05-13 | 주식회사 비츠로셀 | 내구성을 높인 권취형 전지 |
KR20210131993A (ko) | 2018-12-04 | 2021-11-03 | 엘디아이 파이낸시스 | 작업편의 프로파일을 측정하기 위한 시스템 및 방법 |
Also Published As
Publication number | Publication date |
---|---|
KR20230049050A (ko) | 2023-04-12 |
CN116802862A (zh) | 2023-09-22 |
JP2024503020A (ja) | 2024-01-24 |
EP4287328A1 (en) | 2023-12-06 |
US20240039134A1 (en) | 2024-02-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2014133275A1 (ko) | 이차 전지 및 그 제조 방법 | |
CA2562960C (en) | Electrochemical cell comprising electrode lead with protector element | |
WO2013009148A2 (ko) | 원통형 이차 전지 | |
WO2014181950A1 (ko) | 이차전지, 이를 포함하는 이차전지 모듈 및 이차전지 팩 | |
JP2006080072A (ja) | 巻取型電極組立体とこれを備えるリチウム二次電池およびその製造方法 | |
WO2010044554A1 (ko) | 안전성이 향상된 캡 어셈블리 및 이를 포함하고 있는 원통형 이차전지 | |
WO2012026705A2 (ko) | 개선된 구조의 젤리-롤 및 이를 포함하는 이차전지 | |
WO2006112639A1 (en) | Secondary battery module having piezo sensor | |
JP4515405B2 (ja) | 円筒状のリチウム二次電池及びその製造方法 | |
WO2013100446A1 (ko) | 제조공정성이 향상된 캡 어셈블리 및 이를 포함하는 원통형 전지 | |
KR101692414B1 (ko) | 이차전지의 내부압력 측정장치, 및 이를 사용하는 이차전지의 내부압력 측정방법 | |
WO2019050177A1 (ko) | 파우치 형 이차 전지 | |
WO2019045310A1 (ko) | 파우치 형 이차 전지 | |
WO2020175773A1 (ko) | 벤팅 장치 | |
WO2021033939A1 (ko) | 이차 전지 | |
WO2020204385A1 (ko) | 이차 전지 | |
KR100635707B1 (ko) | 이차 전지용 전극판 권취장치 | |
WO2020116851A1 (ko) | 원통형 전지셀의 내압측정 지그 | |
KR20190041294A (ko) | 안전 벤트 | |
WO2015190848A1 (ko) | 전기화학 소자 및 이의 제조방법 | |
WO2023059075A1 (ko) | 전극 조립체, 원통형 전지 및 이를 포함하는 시스템 | |
WO2019088524A1 (ko) | 이차 전지 및 이차 전지용 절연판 | |
WO2022196942A1 (ko) | 이차 전지 | |
WO2022092662A1 (ko) | 캡 조립체 및 이를 포함하는 이차 전지 | |
WO2021153922A1 (ko) | 이차전지 및 이차전지의 제조 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22878896 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18268522 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023541732 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280010140.X Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022878896 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2022878896 Country of ref document: EP Effective date: 20230901 |