WO2022186565A1 - 화재 방지 성능이 향상된 배터리 모듈 - Google Patents
화재 방지 성능이 향상된 배터리 모듈 Download PDFInfo
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- WO2022186565A1 WO2022186565A1 PCT/KR2022/002832 KR2022002832W WO2022186565A1 WO 2022186565 A1 WO2022186565 A1 WO 2022186565A1 KR 2022002832 W KR2022002832 W KR 2022002832W WO 2022186565 A1 WO2022186565 A1 WO 2022186565A1
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- WIPO (PCT)
- Prior art keywords
- trap
- battery
- battery module
- present
- module
- Prior art date
Links
- 230000002265 prevention Effects 0.000 title 1
- 238000004146 energy storage Methods 0.000 claims description 17
- 239000007789 gas Substances 0.000 description 34
- 230000000903 blocking effect Effects 0.000 description 18
- 230000000694 effects Effects 0.000 description 14
- 239000011148 porous material Substances 0.000 description 13
- 238000007789 sealing Methods 0.000 description 12
- 238000004880 explosion Methods 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000008279 sol Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000003466 welding 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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/383—Flame arresting or ignition-preventing means
-
- 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
- H01M10/52—Removing gases inside the secondary cell, e.g. by absorption
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/251—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for stationary devices, e.g. power plant buffering or backup power supplies
-
- 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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
-
- 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
Definitions
- the present invention relates to a battery, and more particularly, to a battery module capable of effectively preventing the occurrence or spread of fire, and a battery pack and an energy storage system including the same.
- Currently commercialized secondary batteries include a nickel cadmium battery, a nickel hydrogen battery, a nickel zinc battery, and a lithium secondary battery.
- the lithium secondary battery is attracting attention because of the advantages of free charge/discharge, a very low self-discharge rate, and a high energy density because the memory effect hardly occurs compared to a nickel-based secondary battery.
- the secondary battery may be used alone, but in general, a plurality of secondary batteries are electrically connected to each other in series and/or in parallel in many cases.
- a plurality of secondary batteries may be accommodated in one module case while being electrically connected to each other to constitute one battery module.
- the battery module may be used alone or two or more may be electrically connected to each other in series and/or parallel to constitute a higher level device such as a battery pack.
- an energy storage system for storing the generated power is receiving more attention.
- ESS energy storage system
- a battery pack may typically include a large number of battery modules. And, in order to increase the energy density, a plurality of battery modules are often configured in a dense form in a very narrow space.
- a thermal propagation situation may occur in one battery module, and a situation in which a high-temperature gas is discharged from at least one battery cell (secondary battery) may occur.
- high-temperature sparks may be ejected when the gas is discharged, and the sparks may include active materials or molten aluminum particles that are desorbed from electrodes inside the battery cell.
- a flare or the like may occur in some battery cells. If such sparks or flares leak to the outside of the battery module, a fire may occur in the battery pack.
- the present invention has been devised to solve the above problems, and a battery module configured to effectively suppress fire even if sparks or flares are generated inside due to thermal runaway, etc., a battery pack including the same, and energy storage
- the purpose is to provide a system, etc.
- a battery module comprising: a cell assembly including a plurality of secondary batteries stacked on each other; and a lower plate, a side plate, and an upper plate to accommodate the cell assembly to form an inner space, and a trap portion concave outwardly formed on at least a portion of an inner surface of the side plate, wherein the trap portion is a front or It includes a module case formed biased to the rear.
- the trap part may be formed to protrude outward from the outer surface of the side plate.
- the cell assembly is stacked in a vertical direction in a state in which a plurality of pouch-type secondary batteries are laid down, electrode leads of the pouch-type secondary batteries are located in the front and rear directions of the module case, and the module case is front and rear At least one side may be configured to be open.
- the module case may be configured such that when gas is generated from the cell assembly, the generated gas is discharged to at least one side of a front and a rear side.
- the trap part may be configured to be positioned on only one side with respect to the front-rear center line of the side plate.
- the side plate includes a left plate and a right plate
- the trap part includes a left trap part formed on the left plate and a right trap part formed on the right plate
- the left trap part and the right trap part include the side part It may be configured to be positioned on opposite sides with respect to the front-rear center line of the plate.
- the trap portion may be formed such that the depth of the concave portion becomes deeper as at least a portion of the portion moves forward or rearward.
- the side plate may further include a guide part inclined toward the trap part.
- the module case may further include a protrusion formed to protrude in the central direction at the front end or the rear end of the trap unit.
- the trap part, the front end or the rear end may be formed to be concave in the front or rear.
- a battery pack according to another aspect of the present invention for achieving the above object includes the battery module according to the present invention.
- an energy storage system for achieving the above object includes a battery module according to the present invention.
- the occurrence of fire in the battery module can be effectively prevented.
- the spark, etc. from flowing out while easily discharging the gas to the outside of the battery module. Accordingly, it is possible to prevent explosion of the battery module and fundamentally prevent a fire from occurring outside the battery module.
- the volume can be reduced and the energy density can be increased.
- the present invention may have various other effects, which will be described in each embodiment, or the corresponding description will be omitted for effects that can be easily inferred by those skilled in the art.
- FIG. 1 is a perspective view schematically showing the configuration of a battery module according to an embodiment of the present invention.
- FIG. 2 is an exploded perspective view of a partial configuration of FIG. 1 .
- FIG. 3 is a view of the configuration of a battery module according to an embodiment of the present invention as viewed from above.
- FIG. 4 is a diagram schematically illustrating a spark trap effect when a spark is generated in some secondary batteries in a battery module according to an embodiment of the present invention.
- FIG. 5 is a top view schematically illustrating a configuration in which two battery modules are arranged in a horizontal direction according to an embodiment of the present invention.
- FIG. 6 is a perspective view showing a cell assembly separated from the battery module according to an embodiment of the present invention.
- FIG. 7 is a top view schematically showing the configuration of a battery module according to another embodiment of the present invention.
- FIG. 8 is a top view schematically showing the configuration of a battery module according to another embodiment of the present invention.
- FIG. 9 is an enlarged view of a portion E1 of FIG. 8 .
- FIG. 10 is a top view schematically showing the configuration of a battery module according to another embodiment of the present invention.
- FIG. 11 is a top view showing a configuration in which two battery modules of FIG. 10 are stacked in the left and right lateral directions.
- FIG. 12 is a top view schematically showing the configuration of a battery module according to another embodiment of the present invention.
- FIG. 13 is a top view schematically showing the configuration of a battery module according to another embodiment of the present invention.
- FIG. 14 and 15 are top views schematically illustrating a configuration of a battery module according to still another exemplary embodiment of the present invention.
- 16 is a top view schematically showing the configuration of a battery module according to another embodiment of the present invention.
- 17 is a top view schematically showing the configuration of a battery module according to another embodiment of the present invention.
- FIG. 18 is a top view schematically showing the configuration of a battery module according to another embodiment of the present invention.
- FIG. 19 is an enlarged view of a portion A6 of FIG. 18 .
- FIG. 1 is a perspective view schematically showing a configuration of a battery module according to an embodiment of the present invention
- FIG. 2 is an exploded perspective view of a part of the configuration of FIG. 1 .
- the battery module according to the present invention includes a cell assembly 100 and a module case 200 .
- the cell assembly 100 may include a plurality of secondary batteries 110 (battery cells).
- the secondary battery 110 may include an electrode assembly, an electrolyte, and a battery case.
- the secondary battery 110 provided in the cell assembly 100 may be a pouch-type secondary battery 110 .
- other types of the secondary battery 110 such as a cylindrical battery or a prismatic battery, may also be employed in the cell assembly 100 of the present invention.
- the plurality of secondary batteries 110 may form the cell assembly 100 in a stacked form.
- the plurality of secondary batteries 110 may be stacked in the vertical direction (the Z-axis direction of the drawing).
- Each pouch-type secondary battery 110 may include an electrode lead 111 , and the electrode lead 111 may be located at both ends or at one end of each secondary battery 110 .
- the secondary battery 110 in which the electrode lead 111 protrudes in both directions may be referred to as a bidirectional cell, and the secondary battery in which the electrode lead 111 protrudes in one direction may be referred to as a unidirectional cell.
- the present invention is not limited by the specific type or shape of the secondary battery 110 , and various secondary batteries 110 known at the time of filing of the present invention may be employed in the cell assembly 100 of the present invention.
- the module case 200 may have an empty space formed therein to accommodate the cell assembly 100 . Furthermore, the module case 200 may include a lower plate 210 , a side plate 220 , and an upper plate 230 as shown in the drawings.
- the module case 200 may be manufactured in a form in which at least some plates are integrated, or may be configured in a form coupled to each other by a fastening method such as bolts or welding.
- the lower plate 210 and the side plate 220 may be manufactured integrally with each other to form a lower case.
- the lower plate 210 , the side plate 220 , and the upper plate 230 may define an inner space, and the cell assembly 100 may be accommodated in the inner space.
- the lower plate 210 and the side plate 220 may be formed in a U-shape or a box shape to constitute a lower case.
- the upper plate 230 may be coupled to the upper open end of the lower case to cover the upper end of the cell assembly 100 .
- the upper plate 230 may be configured in a shape in which both ends are bent, but may be formed in various other shapes and configured to be coupled to the side plate 220 .
- the module case 200 may be formed in the form of a mono frame in which the lower plate 210 , the side plate 220 , and the upper plate 230 are integrated.
- the module case 200 may include a trap unit 221 .
- the trap part 221 may be formed on the inner surface of the side plate 220 , in particular, the side plate 220 .
- the trap unit 221 may be configured to be concavely formed in an outward direction from at least a portion of the inner surface of the side plate 220 .
- the trap unit may be formed in a forward or backward biased form. This will be further described with reference to FIG. 3 .
- FIG. 3 is a view of the configuration of a battery module according to an embodiment of the present invention as viewed from above.
- FIG. 3 may be referred to as a view of the battery module of FIGS. 1 and 2 as viewed from the top in a state in which the upper plate 230 is removed.
- the side plate 220 may include a trap part 221 having an inner surface concave outwardly in at least a portion thereof.
- the outward direction may refer to a direction opposite to the direction in which the battery cells are positioned, that is, an outer direction of the battery module.
- the side plate 220 positioned in the +X-axis direction with respect to the secondary battery is formed to be concave in the outward direction (+X-axis direction), as indicated by an arrow on some inner surfaces.
- a trap unit 221 may be provided.
- FIG. 3 the configuration of FIG.
- the side plate 220 positioned in the -X-axis direction with respect to the secondary battery has a trap portion formed concavely in the outward direction (-X-axis direction), as indicated by arrows on some inner surfaces of the side plate 220 . (221) may be provided.
- the +X-axis direction and the -X-axis direction are also indicated as the right direction with respect to the cell assembly 100 , unless otherwise specified.
- the +Y-axis direction is also indicated as the front
- the -X-axis direction is also indicated as the rearward.
- a direction toward the center of the battery module for example, a direction in which the cell assembly 100 is positioned, is indicated in an inner direction
- a direction toward the outside of the battery module is indicated in an outer direction.
- the trap unit 221 formed in the module case 200 it is possible to effectively prevent high-temperature sparks or flares from flowing out to the outside of the module case 200. have. This will be described in more detail with reference to FIG. 4 .
- FIG. 4 is a diagram schematically illustrating a trap effect of a spark when a spark is generated in some secondary batteries 110 in the battery module according to an embodiment of the present invention.
- the ejected spark may be trapped by the trap portion 221 of the side plate 220 . That is, the spark ejected from the secondary battery 110 may be discharged into the inner space of the module case 200 , and the trap unit 221 is present in the inner space of the module case 200 .
- the spark may be introduced into the concave portion of the trap portion 221 and move along the concave shape, and the movement may be blocked at the end of the concave portion.
- the spark in the trap part 221 moves as indicated by an arrow in FIG. 4 , and then at the horizontal ends of the trap part 221 as indicated by A1 and A1', the movement is blocked or moved.
- the direction can be switched.
- the trap unit 221 may allow sparks generated inside the module case 200 to be confined in a concave space therein. Therefore, sparks and the like may not be discharged to the outside of the module case 200 . According to this implementation effect, sparks and the like are prevented from contacting oxygen existing outside the module case 200, thereby reducing the risk of fire.
- the trap portion 221 may be configured to be biased forward or backward from the side plate 220 .
- the trap part 221 of the side plate 220 positioned in the +X-axis direction that is, in the left direction with respect to the cell assembly 100, is rearward (-Y-axis direction).
- the trap part 221 of the side plate 220 positioned in the -X-axis direction that is, the right direction with respect to the cell assembly 100, may be formed to be biased forward (+Y-axis direction). That is, when the front-rear center line of the side plate 220 is referred to as C-C', the trap unit 221 may be positioned to be biased toward the front side or the rear side without a central portion located on the line C-C'. .
- FIG. 5 is a top view schematically illustrating a configuration in which two battery modules are arranged in a horizontal direction according to an embodiment of the present invention.
- two battery modules according to the present invention may be stacked in the lateral direction, that is, in the X-axis direction.
- the trap part 221 may protrude in the outward direction (X-axis direction) from the side plate 220, and the two battery modules M1 and M2 move in the lateral direction (X-axis direction). direction), the volume increase due to the trap part 221 may not be large.
- the trap part ( 221) may be formed in a shape similar to that of the depth.
- the trap portion 221 is formed on each of the side plates 220 facing each other of the two battery modules M1 and M2
- the distance between the main bodies of the two battery modules M1 and M2 is such It can be said that the trap portion 221 is formed close to about 1 time, not about twice the depth of the trap portion 221 . And, it can be said that this is possible because, like the configuration of the present invention, the trap part 221 is biased forward or backward from the side plate 220 .
- the trap part 221 may be formed to protrude outward from the outer surface of the side plate 220 .
- the trap part 221 of the side plate 220 positioned in the +X-axis direction with respect to the cell assembly 100 has an inner surface in an outward direction (+X-axis direction).
- the outer surface may be formed to protrude convexly in the outward direction (+X-axis direction) corresponding to the concave shape.
- the trap part 221 of the side plate 220 positioned in the -X-axis direction with respect to the cell assembly 100 corresponds to a shape in which the inner surface is concave in the outward direction (-X-axis direction), the outer surface is It may be formed in a shape protruding convexly in an outward direction (-X-axis direction). That is, in the side plate 220 , the outer surface of the portion where the trap unit 221 is positioned may be convex, and the outer surface of the portion where the trap unit 221 is not positioned may be concave.
- an increase in volume due to the trap unit 221 can be reduced. That is, when the side plate 220 is viewed from the outer surface, only the portion where the trap portion 221 is located protrudes (convex portion), and the remaining portion is formed in a concave shape (concave portion). Accordingly, when stacking with other battery modules, the trap portion 221 of the other battery module adjacent to the concave portion may be inserted.
- the coupling between the battery modules can be improved by the coupling between the convex part and the concave part formed on the outer surface of the battery module.
- the movement of the two battery modules M1 and M2 in the Y-axis direction may be limited due to the combination of the convex part and the concave part between the side plates 220 .
- the movement of the first battery module M1 in the -Y-axis direction is limited by the second battery module M2, and the second battery module M2 has the +Y-axis direction by the first battery module M1. Movement in the direction may be restricted.
- the cell assembly 100 may be configured in a form in which a plurality of pouch-type secondary batteries 110 are stacked in a vertical direction in a lying state. This will be described in more detail with reference to FIG. 6 .
- FIG. 6 is a perspective view showing the cell assembly 100 separated from the battery module according to an embodiment of the present invention.
- the secondary battery 110 included in the cell assembly 100 is a pouch-type secondary battery 110 and may be disposed in a lying state.
- the pouch-type secondary battery 110 may be formed to have approximately two wide surfaces, and may be disposed in a laid-down form such that the two wide surfaces face upward and downward directions.
- the X-Y plane of FIG. 6 may form the same plane as the lower plate 210 of the module case 200.
- the secondary batteries 110 of the laid-down form may be stacked and disposed in the vertical direction (the Z-axis direction of the drawing) so that the upper surface and the lower surface face each other.
- the sealing parts of all secondary batteries 110 may be configured to face the trap part 221 of the side plate 220 . Therefore, no matter what kind of secondary battery 110 a spark is discharged, the discharged spark may be configured to be confined by the trap unit 221 .
- sparks are formed in any of the secondary batteries 110 stacked in the vertical direction and are discharged in the directions indicated by arrows A2 and A2 ′, but the emitted sparks may be directed toward the trap portion 221 of the side plate 220 . Accordingly, with respect to all the stacked secondary batteries 110 , the trap unit 221 may respond when sparks are ejected.
- the cell assembly 100 may be configured such that the electrode leads 111 of the pouch-type secondary battery 110 are positioned in the front and rear directions of the module case 200 .
- the electrode lead 111 is forward (+Y-axis direction) or rearward (- Y-axis direction) may be configured to face.
- the module case 200 may be configured such that at least one side of the front and rear is opened.
- the module case 200 may include a front plate 240 and a rear plate 250 .
- the front plate 240 may be configured such that a portion thereof is opened, such as the portion indicated by O1.
- the rear plate 250 may be configured such that a portion thereof is open, such as a portion indicated by O2.
- the gas when the spark is ejected from the cell assembly 100 together with the gas, the gas is smoothly discharged to the outside of the module case 200, while the spark is discharged to the outside of the module case 200 can be suppressed
- the gas when gas and sparks are discharged in the A2 and A2' directions, the gas is not greatly restricted by the flow by the trap part 221 as a gas, and the front opening part (O1) or the rear opening (O2). Accordingly, even when gas is generated from the cell assembly 100 , the internal pressure of the module case 200 is prevented from increasing to a certain level or more, so that the explosion of the battery module can be suppressed.
- sparks and the like may contain particles or substances such as solid or liquid, gel or sol state. may impede its movement. Therefore, according to this configuration of the present invention, the effect of preventing both the explosion of the battery module and external leakage such as sparks can be achieved.
- the trap part 221 for blocking the spark in the module case 200 is provided on the side plate 220, and the opening parts O1 and O2 from which the gas is discharged are the module case 200 .
- the trap part 221 may be located anteriorly and/or posteriorly of
- the trap part 221 may be positioned to face a side of the sealing part of the secondary battery 110 on which the electrode lead 111 is not positioned.
- the openings O1 and O2 may be positioned to face the side surface where the electrode lead 111 is positioned among the sealing parts of the secondary battery 110 .
- a portion where the gas is discharged by explosion is mainly a portion where the electrode lead 111 is not located. That is, in the configuration of FIG. 4 , when the secondary battery 110 explodes, the explosion site is highly likely to be a sealing portion at both ends in the ⁇ X-axis direction (left and right ends), and a sealing portion at both ends in the ⁇ Y-axis direction (both front and rear ends). Explosions may not easily occur in
- the pouch-type secondary battery 110 may be formed in a substantially rectangular shape when viewed from the top in a lying state.
- the pouch-type secondary battery 110 may be configured in a form in which four sealing parts surround the periphery of the receiving part, and the left and right sealing parts (wing parts) where the electrode leads 111 are not located are the electrode leads 111 . ) is often formed longer than the front and rear sealing portions (terrace portions) where they are located.
- the trap unit 221 may be present at the gas and spark ejection portion or distribution portion.
- the spark may inevitably pass through the trap portion 221 before heading toward the openings O1 and O2. Therefore, the movement of the spark can be suppressed by the trap portion 221 as shown in FIG. 4 . Accordingly, according to the embodiment, the spark discharge blocking effect of the trap unit 221 may be further improved.
- each pouch-type secondary battery 110 of the cell assembly 100 is shown in a folded upward direction. According to this configuration, the volume of the cell assembly 100 can be reduced.
- this is only an example, and the present invention is not necessarily limited to this form.
- the battery module according to the present invention may further include a bus bar assembly 300 as shown in FIGS. 1 and 2 .
- the bus bar assembly 300 may be located in the openings O1 and O2 of the module case 200 .
- the electrode leads 111 of the cell assembly 100 may be positioned in the openings O1 and O2 of the module case 200 .
- the bus bar assembly 300 may be configured to be coupled to the electrode lead 111 of the cell assembly 100 .
- the electrode leads 111 are positioned at both ends in the Y-axis direction, and the module case 200 may be configured such that both ends in the Y-axis direction are opened in response thereto.
- the bus bar assembly 300 may be coupled to the open portions O1 and O2.
- the module case 200 may be configured to open only in the +Y-axis direction.
- the module case 200 may be configured to be sealed except for an open portion to which the bus bar assembly 300 is coupled. Accordingly, when gas is generated inside the module case 200 , the generated gas may be discharged only to the side where the bus bar assembly 300 is located.
- the bus bar assembly 300 may be configured to be positioned on at least one side of the module case 200 , for example, both front and rear ends of the module case 200 (both ends in the Y-axis direction in FIG. 2 ). have.
- the bus bar assembly 300 may include a module bus bar 310 and a bus bar housing 320 .
- the module bus bar 310 may be made of an electrically conductive material, for example, a metal material such as copper or nickel.
- the module bus bar 310 may be configured to be electrically connected to the electrode lead 111 of the cell assembly 100 .
- the module bus bar 310 may be welded or bolted in direct contact with the electrode lead 111 .
- the module bus bar 310 may electrically connect between the electrode leads 111 or transmit voltage information sensed from the electrode leads 111 to an external control unit, for example, a Battery Management System (BMS). have.
- BMS Battery Management System
- the bus bar housing 320 may be configured such that the module bus bar 310 can be seated therein.
- the bus bar housing 320 may have a shape corresponding to the surface of the module bus bar 310 , for example, a planar portion as a seating part so that the module bus bar 310 is mounted.
- the bus bar housing 320 may support the module bus bar 310 so that the seated module bus bar 310 can stably maintain its position.
- the bus bar housing 320 may be coupled and fixed to the module bus bar 310 using various fastening methods such as bolts, rivets, fusion, insertion, and adhesion.
- the bus bar housing 320 may be made of an electrically insulating material such as plastic (polymer) so as not to be electrically connected to the module bus bar 310 .
- the bus bar housing 320 may be coupled and fixed to the module case 200 , in particular, the front plate 240 or the rear plate 250 .
- the coupling method between the bus bar housing 320 and the module case 200 may be implemented in various forms such as bolts, rivets, fusion, insertion, and adhesion.
- a slot 321 may be formed so that the electrode lead 111 passes therethrough.
- the module bus bar 310 is seated on the outer surface of the bus bar housing 320 , and the electrode lead 111 penetrates the slot 321 from the inside of the bus bar housing 320 . After that, it may be in contact with the outer surface of the module bus bar 310 located outside.
- the slot 321 may be formed in a shape corresponding to the shape of the electrode lead 111 so that the electrode lead 111 can easily pass therethrough.
- the slot 321 as shown in the drawing, may be formed in a form that is elongated in the left-right direction (X-axis direction of the drawing).
- a plurality of such slots 321 may be formed in the bus bar housing 320 .
- a plurality of electrode leads 111 may exist in the vertical direction. Accordingly, as shown in FIG. 2 , a plurality of slots 321 may also be disposed to be spaced apart by a predetermined distance in the vertical direction.
- the slot 321 may serve to penetrate the electrode lead 111 and support the electrode lead 111 , and may additionally serve to discharge the vent gas.
- the other part of the module case 200 may be configured in an almost sealed form.
- the gas may increase the pressure inside the battery module.
- the slot 321 since an empty gap is formed around the periphery through which the electrode lead 111 has passed, the gas inside the battery module may be discharged to the outside through the slot 321 .
- sparks or flares other than gas may be prevented from being discharged to the outside by the trap unit 221 , as described above.
- the module case 200 may be configured such that when gas is generated from the cell assembly 100, the generated gas is discharged to at least one side of the front and the rear. .
- the portion from which the gas is discharged to the outside of the module case 200 may be a slot 321 of the bus bar assembly.
- the trap unit 221 may be formed on the side plate 220 of the module case 200 . That is, the trap unit 221 may be formed on the left plate 220L and the right plate 220R of the module case 200 .
- the gas and sparks discharged from the cell assembly 100 may pass through the trap unit 221 before being discharged to the outside of the module case 200 . Accordingly, while the gas in the gas state is smoothly discharged to the outside of the module case 200 , the spark in the non-gas state may be prevented from being discharged to the outside of the module case 200 by the trap unit 221 .
- the trap part 221 may be configured to be positioned on only one side with respect to the front-rear center line of the side plate 220 . This will be described in more detail with reference to FIG. 7 .
- FIG. 7 is a top view schematically showing the configuration of a battery module according to another embodiment of the present invention.
- the front-rear direction of the side plate 220 may be referred to as a ⁇ Y-axis direction.
- the center line in the front-rear direction with respect to the side plate 220 may be referred to as a line C-C'.
- the trap unit 221 may be configured to be located only in the front (+Y-axis direction) or rear (-Y-axis direction) with respect to the line C-C'.
- the trap unit 221 may be configured to be positioned only in one direction of the front side and the rear side without crossing the line C-C'.
- the side plate may include two side plates positioned in opposite directions to each other, as shown in FIG. 7 .
- the two side plates are respectively positioned at both ends in the X-axis direction with respect to the cell assembly, and may be a left plate 220L and a right plate 220R.
- the trap unit 221 may be formed on the left plate 220L and the right plate 220R, respectively.
- the trap part 221 formed on the left plate 220L may be a left trap part 221L
- the trap part 221 formed on the right plate 220R may be called a right trap part 221R.
- the left trap part 221L and the right trap part 221R may be positioned on opposite sides with respect to the front-rear center line of the side plate 220 .
- the left trap part 221L may be configured to be positioned at the rear (-Y-axis direction) based on a line C-C', which is a center line in the front-rear direction in the left plate 220L.
- the right trap part 221R may be configured to be positioned in the front (+Y-axis direction) based on the line C-C', which is the front-rear center line in the right plate 220R.
- a trap portion is formed on the left plate 220L and the right plate 220R, respectively, and by dividing the arrangement of the trap portion in the front and rear, it is possible to reduce the volume when stacking a plurality of battery modules. .
- the trap part 221 has a form that extends forward (+Y-axis direction) or rearward (-Y-axis direction) from a portion close to the center of the side plate 220, and the terrace part S2 is located It can be formed to extend to the part.
- the pouch-type secondary battery 110 provided in the cell assembly 100 includes a housing R in which the electrode assembly is accommodated, and a sealing in which the upper pouch and the lower pouch are fused. It can be divided into a part (S).
- the sealing part (S) may include a wing part (S1) and a terrace part (S2), and may be configured to surround the receiving part (R).
- the trap unit 221 extends forward or rearward from the central side portion in the front-rear direction of the side plate 220 to the portion where the terrace portion S2 of the pouch-type secondary battery 110 is located, or more. can be extended to
- the left trap portion 221L extends from a portion close to the line C-C' to the rear (-Y-axis direction), and at least the pouch-type secondary battery 110, like the portion indicated by the line A4-A4'. ) may be configured to extend to the rear end of the receiving portion (R) ends.
- the right trap portion 221R extends from a portion close to the line C-C' toward the front (+Y-axis direction), and, like the portion indicated by the line A5-A5', at least the pouch-type secondary battery 110 .
- the receiving portion (R) may be configured to extend to the end of the front end.
- the trap part 221 can be made to cover the wing part S1 of the pouch-type secondary battery 110 as much as possible.
- the left trap portion 221L can cover from the center portion of the wing portion S1 of the secondary battery to the rear end
- the right trap portion 221R can cover from the center portion of the wing portion S1 of the secondary battery to the front end portion.
- the trap portion 221 may be formed such that the depth of the concave portion increases as at least a portion of it moves forward or rearward. This will be described in more detail with reference to FIGS. 8 and 9 .
- FIG. 8 is a top view schematically showing the configuration of a battery module according to another embodiment of the present invention. Also, FIG. 9 is an enlarged view of a portion E1 of FIG. 8 .
- the present embodiment will be mainly described with respect to parts that are different from the previous embodiment, and detailed descriptions of parts to which the description of the previous embodiment can be applied in the same or similar manner will be omitted.
- the right trap part 221R has a concave portion toward the front (+Y-axis direction) from a portion close to the front-rear center line (line C-C') of the side plate 220 . may be configured to be deeper.
- the left trap portion 221L is configured such that the depth of the concave portion increases from the portion close to the front-rear center line (line C-C') of the side plate 220 toward the rear (-Y-axis direction).
- an inclined surface may be formed on the inner surface of the trap unit 221 .
- the right trap portion 221R may have an inclined surface in such a way that the depth thereof increases as it goes forward (+Y-axis direction).
- the left trap portion 221L may have an inclined surface in such a way that the depth thereof increases toward the rear (-Y-axis direction).
- sparks ejected from the wing portion of the secondary battery 110 may move in the front-rear direction ( ⁇ Y-axis direction) along the inclined surfaces I1 and I2 of the trap portion 221 . Then, when the front and rear ends of the trap part 221 are reached, the portions indicated by E1 and E2 may no longer move, and the movement direction may be changed. In this case, the moving direction may be bent at an angle greater than 90°.
- the angle itself near the edges of the front and rear ends E1 and E2 of the left trap part 221L constitutes an acute angle.
- this may be said to be an angle greater than 90°. That is, looking at (a) of FIG. 9 , sparks and the like in the left trap part 221L first move in the direction of the arrow F1 , and then collide with the end of the left trap part 221L and the direction is changed, and the direction is changed by the arrow F2 . can move in the same direction as And, if the center points of the arrows F1 and F2 are the same, it is as shown in (b) of FIG. 9 . In this case, the angle ⁇ formed by the arrows F1 and F2 may be an obtuse angle greater than 90°.
- the outer surface of the trap part 221 when the outer surface of the trap part 221 is formed to be inclined, when the side plate 220 is viewed from the outside, as in the part indicated by J, the central part is concave inward. It can be seen in the entered form.
- the outer concave portion J due to the inclination of the trap part 221 may be used as a space between the battery modules as a flow path through which cooling air or the like flows.
- the side plate 220 may further include a guide part 223 in addition to the trap part 221 . This will be described in more detail with reference to FIG. 10 .
- FIG. 10 is a top view schematically showing the configuration of a battery module according to another embodiment of the present invention.
- the present embodiment will also be mainly described with respect to parts that are different from the previous embodiment.
- the left plate 220L has a left trap part 221L formed on the rear (-Y-axis direction) side with respect to the front-rear center line (C-C' line), and the front (+Y-axis direction) ) side, a left guide part 223L may be formed.
- the left guide part 223L may be formed in a concave shape compared to other portions of the left plate 220L except for the left trap part 221L, and may be configured to extend to the left trap part 221L.
- the left guide part 223L like the portion indicated by I4, may be configured in an inclined shape.
- the left guide part 223L may be configured such that the depth of the concave portion increases toward the rear (-Y-axis direction).
- the depth of the left guide part 223L may be formed to be less than or equal to the depth of the left trap part 221L.
- the right plate 220R has a right trap portion 221R formed on the front (+Y-axis direction) side with respect to the front-rear center line (line C-C'), and a right guide on the rear (-Y-axis direction) side.
- a portion 223R may be formed.
- the right guide part 223R may be formed in a concave shape compared to other portions of the right plate 220R except for the right trap part 221R, and may be configured to extend to the right trap part 221R.
- the right guide portion 223R like the portion indicated by I3, may be configured in an inclined shape. That is, the right guide part 223R may be configured such that the depth of the concave portion increases toward the front (+Y-axis direction). In this case, the depth of the right guide part 223R may be formed to be less than or equal to the depth of the right trap part 221R.
- a trap effect such as sparks can be further improved.
- the guide portion 223 such as the left guide portion 223L and the right guide portion 223R
- a trap effect such as sparks can be further improved.
- the left trap part 221L in the case of the left trap part 221L, it may be located only on the rear side.
- sparks are generated from the left front part of the wing part of the secondary battery, these sparks are disposed on the left guide part. It can move backward along the inclined surface I4 of the 223L and be attracted to the left trap part 221L (arrow A3').
- the right trap part 221R it may be located only on the front side.
- the spark or the like When a spark or the like is generated from the right rear of the wing part of the secondary battery, the spark or the like is disposed on the inclined surface I3 of the right guide part 223R. It can be moved forward along and be attracted to the right trap part 221R (arrow A3). Therefore, in this case, spark trapping of the entire left and right wing portions of the secondary battery may be possible.
- the inclined surface of the guide part 223 may be configured to correspond to the inclined surface of the trap part 221 . This will be described in more detail with reference to FIG. 10 .
- FIG. 11 is a top view showing a configuration in which two battery modules of FIG. 10 are stacked in the left and right lateral directions.
- the present embodiment will also be mainly described with respect to parts that are different from the previous embodiments.
- the inclined surface I3 of the right guide part 223R of the third battery module M3 has a shape, It may be configured to correspond to the shape of the inclined surface I1 of the left trap part 221L of the fourth battery module M4.
- the angle of the inclined surface I3 of the right guide part 223R of the third battery module M3 is the same or similar to the angle of the inclined surface I1 of the left trap part 221L of the fourth battery module M4.
- the shape of the inclined surface I4 of the left guide part 223L of the fourth battery module M4 may be configured to correspond to the shape of the inclined surface I2 of the right trap part 221R of the third battery module M3.
- the angle of the inclined surface I4 of the left guide part 223L of the fourth battery module M4 is the same or similar to the angle of the inclined surface I2 of the right trap part 221R of the third battery module M3.
- the inclined shape of the left guide part 223L is configured to correspond to the inclined shape of the right trap part 221R, and the inclined shape of the right guide part 223R is formed.
- the volume can be further minimized when a plurality of battery modules are horizontally stacked.
- the trap unit 221 may be configured such that irregularities are formed on the inner surface. This will be described in more detail with reference to FIG. 12 .
- FIG. 12 is a top view schematically showing the configuration of a battery module according to another embodiment of the present invention. Also with reference to FIG. 12, the parts with differences from the previous embodiment will be mainly described.
- the trap part 221 may be configured in a shape having concavities and convexities by forming a plurality of grooves in an outwardly concave shape on the inner surface.
- the left trap part 221L and the right trap part 221R may be configured in a form in which a plurality of grooves G are formed, respectively.
- the movement of sparks and the like may be prevented by the irregularities formed on the inner surface of the trap unit 221 , that is, the plurality of grooves G. Therefore, it can be further suppressed that sparks are discharged to the outside through the openings O1 and O2 of the module case 200 .
- each of the grooves (G) may be formed such that the depth of the concave portion becomes deeper toward the front or rear from the central portion.
- each inclined surface is formed, and these inclined surfaces D3 are rearward (-Y) in the gas flow direction. axial direction) and may be configured in a form that becomes deeper in depth.
- inclined surfaces may be respectively formed in the plurality of grooves G formed in the right trap part 221R, and these inclined surfaces are formed to become deeper in depth toward the front (+Y-axis direction), which is the gas flow direction.
- the movement direction of the spark or the like for each groove (G) can be converted to an angle (obtuse angle) greater than a right angle. Accordingly, the effect of suppressing movement of sparks by the trap unit 221 may be further improved.
- the present invention is limited to this embodiment it is not
- the plurality of grooves G described in FIG. 12 are inclined surfaces I1 and I2 of each trap part in the embodiment of FIG. 8 , or inclined surfaces of each guide part 223 in the embodiment of FIG. 10 . It may be formed at (I3, I4). In this case, the spark blocking effect due to the inclined surface of the trap unit 221 and the like and the spark blocking effect due to the unevenness are summed, and the effect may be further increased.
- module case 200 may further include a protrusion formed to protrude in the central direction at the front end or the rear end of the trap unit 221 . This will be described in more detail with reference to FIG. 13 .
- 13 is a top view schematically showing the configuration of a battery module according to another embodiment of the present invention. 13 will also be mainly described with respect to parts having differences from the previous embodiment.
- the module case 200 may further include a protrusion 222 at the front end and/or the rear end of the trap unit 221 .
- the protrusion 222 may be configured to protrude from the side plate 220 of the module case 200 toward the inner direction (central direction) of the trap unit 221 .
- the protrusion 222 is configured to protrude in the front lateral direction (+Y-axis direction), and the left trap part 221L ) may be configured to partially cover the rear end.
- the protrusion 222 may be configured to protrude in the rear lateral direction (-Y-axis direction) at the front end.
- the sparks introduced into the trap part 221 may be switched in the opposite direction from the end side of the trap part 221 . Therefore, in this case, sparks and the like can be made to stay in the trap unit 221 , and thus, a trap effect of sparks generated by the trap unit 221 can be further improved.
- the trap part 221 may have a front end or a rear end concave forward or rearward. This will be described in more detail with reference to FIGS. 14 and 15 .
- FIG. 14 and 15 are top views schematically illustrating a configuration of a battery module according to still another exemplary embodiment of the present invention.
- the present embodiments will also be mainly described with respect to parts that are different from the previous embodiments.
- the trap part 221 is formed on the side plate 220 of the module case 200 , and the front-back direction (Y-axis direction) side end of the trap part 221 is further in the front-rear direction. may be concave.
- the front end of the right trap part 221R may be more concave in the forward lateral direction (+Y-axis direction), such as the portion indicated by H1 ′, such that a groove is provided in the front.
- the rear end of the left trap part 221L may be formed to be more concave in the rear lateral direction (-Y-axis direction) as indicated by H1 to provide a rear groove.
- inclined surfaces may be formed on the front and rear ends of the trap portion 221 .
- the front end of the right trap part 221R may be more concave in the forward lateral direction (+Y-axis direction), like the portion indicated by H2 ′, such that a groove is provided in the front.
- the rear end of the left trap part 221L may be formed to be more concave in the rear lateral direction (-Y-axis direction), like the portion indicated by H2 , such that a groove is provided in the rear.
- the trap portion 221 in order to provide grooves (recessed portions) at the front and rear ends of the trap portion 221 , the trap portion 221 may be formed in a more concave shape in the front and rear directions in the front and rear directions. have.
- the effect of preventing sparks or flares by the trap unit 221 can be more stably secured.
- the sparks or flares move in the front-rear direction and are difficult to flow out of the internal space of the trap part 221 by the recesses located on the front and rear ends.
- spark particles and the like may be inserted into the grooves provided on the front and rear ends of the trap unit 221 . Therefore, in this case, the effect of preventing the discharge of sparks and flares by the trap unit 221 may be further improved.
- FIG. 16 is a top view schematically showing the configuration of a battery module according to another embodiment of the present invention.
- the present embodiment will also be mainly described with respect to parts that are different from the previous embodiment.
- the battery module according to the present invention may further include a mesh member 400 .
- the mesh member 400 may be configured in a form in which a plurality of holes are formed.
- the mesh member 400 may be configured in a form in which a plurality of holes are provided in a plate-shaped member.
- the mesh member 400 may be configured in a form such as a mesh in which different wires are orthogonal to each other. In this case, the mesh member 400 may be easily manufactured, and a large number of holes may be formed while reducing the size of the holes.
- the mesh member 400 may be configured to be introduced into the inner space of the trap unit 221 .
- the mesh member 400 may be disposed so that holes are formed in the front and rear directions.
- the mesh member 400 may be disposed at the front or rear end of the trap unit 221 .
- the mesh member may be disposed at the rear end of the left trap part 221L.
- the mesh member may be disposed at the front end of the right trap portion 221R.
- the movement of sparks or flares by the mesh member 400 can be further blocked. That is, when the spark or flare together with the gas moves in the front-rear direction in the inner space of the trap unit 221 and reaches the mesh member 400 , the gas in a gaseous state can easily pass through the mesh, but the spark or flare Included particles and the like may be filtered by the mesh member 400 . Therefore, in this case, the effect of preventing external emission of sparks or flares can be further improved.
- FIG. 17 is a top view schematically showing the configuration of a battery module according to another embodiment of the present invention.
- the present embodiment will also be mainly described with respect to parts that are different from the previous embodiment.
- the battery module according to the present invention may further include a pore member 500 .
- the pore member 500 may be configured in a form in which a plurality of pores are retained. In particular, these internal pores may be configured to communicate with the outside. That is, the pores held in the pore member 500 may be called empty spaces filled with only gas, and these pores may be configured to communicate with the outside, not in a closed form.
- the porous member 500 may be configured in a form in which a plurality of wires, particularly a plurality of wires made of a material such as metal or polymer, are entangled with each other.
- the pore member 500 may be configured to be inserted into the inner space of the left trap part 221L and/or the right trap part 221R.
- FIG. 18 is a top view schematically showing the configuration of a battery module according to another embodiment of the present invention. 19 is an enlarged view of a portion A6 of FIG. 18 .
- the present embodiment will also be mainly described with respect to parts that are different from the previous embodiment.
- a plurality of blocking protrusions P may be formed on the inner surface of the trap part 221 .
- the blocking protrusion P is formed to protrude from the inner surface of the side plate 220 in the direction (X-axis direction) toward the cell assembly 100 .
- the blocking protrusion P has an empty space therein, and the empty space may be configured to be in an open state in the front-rear direction, in particular, in a direction toward the front-rear central portion of the side plate 220 .
- the inner space of the blocking protrusion P may be configured to be in a closed state toward the front end or the rear end of the side plate 220 .
- the blocking protrusion P of the left trap part 221L in the drawing is a front (+Y-axis direction) in a direction toward the front-rear center line (C-C' line). It may be configured to open toward.
- the blocking protrusion P of the left trap part 221L may be configured in a closed shape in a direction toward the rear end (-Y-axis direction).
- the blocking protrusion P of the right trap part 221R may be configured to open toward the rear (-Y-axis direction), which is a direction toward the front-rear center line (line C-C').
- the blocking protrusion P of the right trap part 221R may be configured in a closed shape in a direction toward the front end (+Y-axis direction).
- the plurality of blocking projections (P) formed on the inner surface of the trap portion 221 external discharge such as sparks or flares can be more reliably blocked.
- sparks or flares moving backward along the inner surface of the left trap part 221L are introduced into the inner space of the blocking protrusion P while Its movement is prevented and the direction can be diverted forward. Therefore, in this case, the effect of preventing movement of sparks or flares can be further improved.
- the battery pack according to the present invention may include a plurality of the above-described battery modules according to the present invention.
- the battery pack according to the present invention includes, in addition to the battery module, various other components, such as BMS, bus bar, pack case, relay, current sensor, etc. known at the time of filing of the present invention. may include more.
- the energy storage system according to the present invention may include one or more battery modules according to the present invention.
- a plurality of battery modules according to the present invention may be included in a form electrically connected to each other.
- a plurality of battery modules according to the present invention may constitute one battery pack, and the energy storage system may be configured in such a way that a plurality of such battery packs are included.
- the energy storage system according to the present invention may further include other various components of the energy storage system known at the time of filing of the present invention.
- such an energy storage system can be used in various places or devices, such as a smart grid system or an electric charging station.
- the battery module according to an aspect of the present invention is employed, the energy density of a battery pack or an energy storage system can be improved.
- 220L Left plate
- 220R Right plate
- 223L left guide part
- 223R right guide part
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Abstract
Description
Claims (12)
- 상호 적층된 다수의 이차 전지를 구비하는 셀 어셈블리; 및상기 셀 어셈블리를 수용하도록, 하부 플레이트, 측부 플레이트 및 상부 플레이트를 구비하여 내부 공간을 형성하며, 상기 측부 플레이트의 내면 중 적어도 일부에 외측 방향으로 오목하게 형성된 트랩부를 구비하고, 상기 트랩부는 전방 또는 후방으로 편중되어 형성된 모듈 케이스를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 트랩부는, 상기 측부 플레이트의 외면에서 외측 방향으로 돌출되게 형성된 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 셀 어셈블리는, 다수의 파우치형 이차 전지가 눕혀진 상태에서 상하 방향으로 적층되며,상기 파우치형 이차 전지의 전극 리드는 상기 모듈 케이스의 전후 방향에 위치하고,상기 모듈 케이스는, 전방 및 후방 중 적어도 일측이 개방되도록 구성된 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 모듈 케이스는, 상기 셀 어셈블리로부터 가스 발생 시, 발생된 가스가 전방 및 후방 중 적어도 일측으로 배출되도록 구성된 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 트랩부는, 상기 측부 플레이트의 전후 방향 중심선을 기준으로 일측에만 위치하도록 구성된 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 측부 플레이트는, 좌측 플레이트와 우측 플레이트를 구비하며,상기 트랩부는, 좌측 플레이트에 형성된 좌측 트랩부와 우측 플레이트에 형성된 우측 트랩부를 구비하고,상기 좌측 트랩부와 상기 우측 트랩부는, 상기 측부 플레이트의 전후 방향 중심선을 기준으로 서로 반대되는 측에 위치하도록 구성된 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 트랩부는, 적어도 일부분이 전방 또는 후방으로 갈수록 오목한 부분의 깊이가 더 깊어지도록 형성된 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 측부 플레이트는, 상기 트랩부를 향하여 경사지게 형성된 가이드부를 더 구비하는 것을 특징으로 하는 모듈 케이스.
- 제1항에 있어서,상기 모듈 케이스는, 상기 트랩부의 전방측 단부 또는 후방 측 단부에 중앙 방향으로 돌출되게 형성된 돌출부를 더 구비하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 트랩부는, 전방측 단부 또는 후방 측 단부가 전방 또는 후방으로 오목하게 형성된 것을 특징으로 하는 배터리 모듈.
- 제1항 내지 제10항 중 어느 한 항에 따른 배터리 모듈을 다수 포함하는 배터리 팩.
- 제1항 내지 제10항 중 어느 한 항에 따른 배터리 모듈을 포함하는 에너지 저장 시스템.
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JP2023501309A JP2023533738A (ja) | 2021-03-04 | 2022-02-25 | 火事防止性能が向上したバッテリーモジュール |
EP22763548.9A EP4199229A4 (en) | 2021-03-04 | 2022-02-25 | BATTERY MODULE WITH IMPROVED FIRE PREVENTION PERFORMANCE |
US18/029,608 US20230361405A1 (en) | 2021-03-04 | 2022-02-25 | Battery module with improved fire protection performance |
CN202280006515.5A CN116261807A (zh) | 2021-03-04 | 2022-02-25 | 具有改进的防火性能的电池模块 |
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JP2023533738A (ja) | 2023-08-04 |
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EP4199229A4 (en) | 2024-07-31 |
AU2022229612A1 (en) | 2023-04-06 |
EP4199229A1 (en) | 2023-06-21 |
KR20220125085A (ko) | 2022-09-14 |
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