WO2022158783A1 - 배터리 팩 - Google Patents
배터리 팩 Download PDFInfo
- Publication number
- WO2022158783A1 WO2022158783A1 PCT/KR2022/000497 KR2022000497W WO2022158783A1 WO 2022158783 A1 WO2022158783 A1 WO 2022158783A1 KR 2022000497 W KR2022000497 W KR 2022000497W WO 2022158783 A1 WO2022158783 A1 WO 2022158783A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery
- battery pack
- module
- duct
- pack
- Prior art date
Links
- 238000013022 venting Methods 0.000 claims description 40
- 230000002265 prevention Effects 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 11
- 239000007772 electrode material Substances 0.000 claims description 10
- 239000010445 mica Substances 0.000 claims description 9
- 229910052618 mica group Inorganic materials 0.000 claims description 9
- 239000002923 metal particle Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 8
- 239000007789 gas Substances 0.000 description 35
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 14
- 239000001301 oxygen Substances 0.000 description 14
- 229910052760 oxygen Inorganic materials 0.000 description 14
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 11
- 229910052744 lithium Inorganic materials 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000011149 active material Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 210000000613 ear canal Anatomy 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
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- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/383—Flame arresting or ignition-preventing means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6566—Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—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
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- 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
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—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
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- 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
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/222—Inorganic material
- H01M50/224—Metals
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- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- 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
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- 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
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/258—Modular batteries; Casings provided with means for assembling
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- 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
- H01M50/271—Lids or covers for the racks or secondary casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
- H01M50/358—External gas exhaust passages located on the battery cover or case
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
- H01M50/367—Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/394—Gas-pervious parts or elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/42—Grouping of primary cells into batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the duct may be spaced apart from module openings formed on one side and the other side in the longitudinal direction of the battery module so that a pack flow path is formed between the battery module and the duct.
- the battery module may include: a cell stack formed by stacking a plurality of battery cells vertically; a module housing for accommodating the cell stack; and a bus bar frame assembly covering the module opening formed on one side in the longitudinal direction of the module housing. may include.
- the pair of side plates may include a spark direction changer formed by bending one end of the side plate in the longitudinal direction toward the cell stack.
- the fire protection sheet may be a mica sheet.
- the battery module may further include a seat cover having a plurality of cover slits through which the electrode leads of the battery cells pass, and covering the fire prevention sheet.
- the cover slit may have a shape in which a width thereof is gradually narrowed in a direction toward the bus bar frame assembly.
- the ESS according to an embodiment of the present invention includes a battery pack according to an embodiment of the present invention.
- a vehicle according to an embodiment of the present invention includes a battery pack according to an embodiment of the present invention.
- the venting gas when an internal event occurs in the battery pack, the venting gas is quickly discharged, and high-temperature sparks can be effectively prevented from leaking to the outside, and also after the venting gas is discharged, the external It is possible to block air from flowing into the battery module.
- FIG. 1 is a perspective view illustrating a battery pack according to an embodiment of the present invention.
- FIG 3 is a view illustrating a pack flow path formed in a battery pack according to an embodiment of the present invention.
- 5 and 6 are views showing a battery module of the present invention.
- FIG. 7 is a view for explaining a movement path of a venting gas and a spark in the battery module of the present invention.
- FIG. 9 is a view showing a state in which the bus bar frame assembly and the fire prevention seat assembly of the present invention are coupled to the module housing.
- FIG. 10 is an exploded perspective view showing a part of the module housing, the bus bar frame assembly, and the fire prevention seat assembly of the present invention.
- a battery pack 1 includes a sub-pack including a plurality of battery modules 10, one side of the sub-pack in the width direction (parallel to the Y-axis) or a duct 30 coupled to both sides and a duct cover 40 covering the duct opening formed in the duct.
- the sub-pack includes a plurality of battery modules 10 disposed adjacent to each other in the longitudinal direction (parallel to the X-axis) of the battery pack 1 .
- the sub-pack may further include a BMS assembly 20 coupled to one side of the module assembly formed by coupling the plurality of battery modules 10 in the longitudinal direction (parallel to the X-axis).
- the battery module 10 includes a cell stack including a plurality of battery cells 100 stacked up and down, and a module housing 200 for accommodating the cell stack.
- the battery cell 100 may be, for example, a pouch type battery cell.
- the module housing 200 includes a base plate 210 supporting the cell stack, side plates 220 covering both sides of the cell stack, and a top plate 230 covering the top of the cell stack. do.
- the battery module 10 includes a module opening 10a formed on one side in the longitudinal direction (parallel to the Y-axis).
- the module opening 10a may also be formed on the other side in the longitudinal direction (parallel to the Y-axis) of the battery module 10 .
- the venting gas generated inside the battery module 10 is discharged along the arrow direction shown in FIG. 4 through the module opening 10a.
- a detailed structure of the battery module 10 will be described later in detail with reference to FIGS. 5 to 11 .
- the BMS assembly 20 may be coupled to one side in the longitudinal direction (parallel to the X-axis) of a module assembly including a plurality of battery modules 10 disposed adjacent to each other.
- the BMS assembly includes at least one battery management system (BMS) that controls charging and discharging of the plurality of battery modules 10 .
- the BMS assembly may further include a BMS frame coupled to the BMS. The BMS frame may be fastened to the module assembly and/or the duct 30 .
- the duct 30 extends along a direction parallel to the coupling direction (parallel to the X-axis) of the battery module 10 .
- the duct 30 may have a length corresponding to the length of the module assembly.
- the duct 30 may be fastened to the module housing 200 by a fastening member such as a bolt B, for example.
- the duct 30 is fastened to the base plate 210 and the top plate 230 of the module housing 200 is illustrated, but the present invention is not limited thereto. That is, the duct 30 may be fastened to the base plate 210 and/or the top plate 230 and/or the side plate 220 of the module housing 200 .
- the duct 30 is a module formed on one side or both sides in the longitudinal direction (parallel to the Y axis) of the battery module 10 so that a pack flow path P is formed between the battery module 10 and the duct 30 . It is spaced apart from the opening 10a.
- the duct 30 is provided with a duct opening formed on one side or both sides of the longitudinal direction (parallel to the X-axis).
- the duct opening communicates with the pack flow path P. Therefore, the venting gas discharged to the outside of the battery module 10 along the module opening 10a formed in the battery module 10 is in the longitudinal direction (parallel to the X-axis) of the duct 30 along the pack flow path P. direction) is discharged to the outside of the battery pack 1 through the duct opening by moving to one side or both sides (refer to the direction of the arrow in FIG. 4 ).
- the duct cover 40 covers the duct opening formed on one side or both sides in the longitudinal direction of the duct 30 .
- the duct cover 40 includes a filter having a mesh structure.
- the filter has a filtration performance in the range of approximately 20 mesh to 100 mesh.
- a mesh which is a unit indicating the performance of a filter, means the number of small squares included in a square of 1 inch in width and 1 inch in length. That is, 20 mesh means that 20 metal wires drawing a square are included in a square of 1 inch in width and 1 inch in length. Accordingly, the performance of the filter expressed in mesh units is more excellent as the numerical value increases.
- the duct cover 40 passes the venting gas among the venting gas and sparks discharged from the battery module 10 when venting occurs, and filters the electrode active material particles and metal particles included in the spark. That is, the numerical range of the filtration performance of the filter of the duct cover 40 corresponds to a numerical range in which rapid discharge of venting gas is possible, but metal particles such as electrode active material particles and aluminum included in the spark can be filtered out.
- the high-temperature venting gas, spark particles, and oxygen may meet inside the battery pack 1 to generate a flame.
- the duct cover 40 rapidly discharges the venting gas to the outside at the initial stage of venting, and when time elapses, it is clogged by the electrode active material particles and metal particles, thereby blocking the inflow of external oxygen to the battery pack ( 1) Block the possibility of internal flames.
- the battery module 10 includes a cell stack formed by stacking a plurality of battery cells 100 in an up-down direction (a direction parallel to the Z-axis), and accommodating the cell stack. and a module housing 200 .
- the battery module 10 includes a bus bar frame assembly 300 covering an opening formed on one side in the longitudinal direction (parallel to the Y axis) of the module housing 200 and a bus bar frame assembly 300 and a cell stack.
- a fire prevention sheet assembly 400 interposed between the sieves and coupled to the bus bar frame assembly 300 may be further included.
- the module housing 200 includes a base plate 210 supporting the cell stack, a pair of side plates 220 covering both sides of the cell stack, and a top plate covering an upper portion of the cell stack ( 230).
- the pair of side plates 220 may include a spark direction changing part 220a formed by bending one end of the side plate in the longitudinal direction toward the cell stack.
- the opening formed on one side in the longitudinal direction of the module housing 200 is formed between a pair of spark direction conversion parts 220a provided on each of the pair of side plates 220 .
- the electrode lead 120 of the battery cell 100 may be exposed to the outside of the module housing 200 through an opening formed between the pair of spark direction changing parts 220a.
- the battery module 10 of the present invention includes the spark direction conversion unit 220a so that the high-temperature spark discharged when the battery cell 100 is vented is generated in the longitudinal direction (Y-axis) of the module housing 200 . direction parallel to) so as not to be ejected to the outside of the module housing 200 . That is, when the battery cells 100 are vented, the high-temperature sparks ejected through both sides in the width direction (parallel to the X-axis) of each battery cell 100 constituting the cell stack are the battery module 10 . In the longitudinal direction (parallel to the Y-axis), it moves toward one end and/or the other end, and the direction of movement is changed to a direction toward the cell stack (refer to the direction of the arrow shown in FIG. 7 ).
- the module housing 200 may further include a fastening frame 225 that connects between the pair of spark direction changing parts 200a and has an empty center.
- the fastening frame 225 is positioned between the bus bar frame assembly 300 and the fire prevention seat assembly 400 .
- the bus bar frame assembly 300 and the fire prevention seat assembly 400 are in close contact with the fastening frame 225 , and may be mutually fastened through the empty central portion of the fastening frame 225 . have.
- the openings provided in the module housing 200 of the present invention may be formed on both sides of the module housing 200 in the longitudinal direction.
- the pair of spark direction changing parts 200a may also be provided on one side and the other side in the longitudinal direction of the module housing 200 .
- the bus bar frame assembly 300 includes a bus bar frame 310 and at least one bus bar 320 .
- a pair of the bus bar frame assemblies 300 may be provided.
- each of the pair of bus bar frame assemblies 300 is formed on one side of the module housing 200 in the longitudinal direction (parallel to the Y axis). The opening and the opening formed on the other side are covered.
- the bus bar frame 310 has a shape corresponding to one end and/or the other end in the longitudinal direction of the module housing 200 and is in close contact with the module housing 200 .
- the bus bar frame 310 is in close contact with the spark direction changing part 220a and the fastening frame 225 .
- the cover slit 420b, the sheet slit 410b, and the frame slit 310b are formed at positions corresponding to each other.
- the fire prevention sheet 410 and the seat cover 420 are positioned corresponding to the frame protrusion 310a for fastening with the bus bar frame 310 . and at least one sheet hole 410a and a cover hole 420a formed in the corresponding shape, respectively.
- the battery pack 1 prevents a fire from occurring inside the battery pack 1 due to the filter provided in the duct cover 40 when an internal event occurs. can do.
- the battery pack 1 according to an embodiment of the present invention can prevent the event from spreading due to the spark direction changing unit 220a and/or the fire prevention sheet assembly 400 provided in the battery module 10 .
- an energy storage system (ESS) includes the battery pack 1 according to an embodiment of the present invention described above.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Aviation & Aerospace Engineering (AREA)
- Inorganic Chemistry (AREA)
- Battery Mounting, Suspending (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
Claims (14)
- 서로 인접하여 배치되는 복수의 배터리 모듈을 포함하는 서브 팩;상기 서브 팩의 폭 방향 일 측에 결합되는 덕트; 및상기 덕트의 길이 방향 일 측에 형성된 덕트 개방부를 커버하며, 메쉬 구조를 갖는 필터를 구비하는 덕트 커버;를 포함하는 배터리 팩.
- 제1항에 있어서,상기 필터는,20메쉬 내지 100 메쉬 범위의 여과 성능을 갖는 필터인 것을 특징으로 하는 배터리 팩.
- 제2항에 있어서,상기 필터는,상기 배터리 모듈로부터 배출되는 벤팅 가스 및 스파크 중 상기 벤팅 가스는 통과시키고 상기 스파크에 포함되는 전극 활물질 입자 및 금속 입자는 걸러내는 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 덕트는,상기 배터리 모듈과 덕트 사이에 팩 유로가 형성되도록, 상기 배터리 모듈의 길이 방향 일 측에 형성된 모듈 개방부와 이격되는 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 배터리 모듈은,복수의 배터리 셀이 상하로 적층되어 형성되는 셀 적층체;상기 셀 적층체를 수용하는 모듈 하우징; 및상기 모듈 하우징의 길이 방향 일 측에 형성되는 모듈 개방부를 커버하는 버스바 프레임 어셈블리;를 포함하는 것을 특징으로 하는 배터리 팩.
- 제5항에 있어서,상기 모듈 하우징은,상기 셀 적층체를 지지하는 베이스 플레이트; 및상기 셀 적층체의 양 측부를 커버하는 한 쌍의 사이드 플레이트;를 포함하는 것을 특징으로 하는 배터리 팩.
- 제6항에 있어서,상기 한 쌍의 사이드 플레이트는,그 길이 방향 일 측 단부가 상기 셀 적층체를 향하도록 절곡되어 형성된 스파크 방향 전환부를 구비하는 것을 특징으로 하는 배터리 팩.
- 제5항에 있어서,상기 배터리 모듈은,상기 버스바 프레임 어셈블리와 셀 적층체 사이에 개재되며, 상기 배터리 셀의 전극 리드가 통과되는 복수의 시트 슬릿을 구비하는 방화 시트를 더 포함하는 것을 특징으로 하는 배터리 팩.
- 제8항에 있어서,상기 방화 시트는,마이카 시트인 것을 특징으로 하는 배터리 팩.
- 제9항에 있어서,상기 배터리 모듈은,상기 배터리 셀의 전극 리드가 통과되는 복수의 커버 슬릿을 구비하며, 상기 방화 시트를 커버하는 시트 커버를 더 포함하는 것을 특징으로 하는 배터리 팩.
- 제10항에 있어서,상기 시트 커버는,상기 마이카 시트가 외기에 노출되지 않도록 상기 마이카 시트를 완전히 감싸는 것을 특징으로 하는 배터리 팩.
- 제10항에 있어서,상기 커버 슬릿은,상기 버스바 프레임 어셈블리를 향하는 방향을 따라 그 폭이 점점 좁아지는 형상을 갖는 것을 특징으로 하는 배터리 팩.
- 제1항 내지 제12항 중 어느 한 항에 따른 배터리 팩을 포함하는 ESS.
- 제1항 내지 제12항 중 어느 한 항에 따른 배터리 팩을 포함하는 자동차.
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EP22742759.8A EP4195394A1 (en) | 2021-01-21 | 2022-01-11 | Battery pack |
US18/270,146 US20240072370A1 (en) | 2021-01-21 | 2022-01-11 | Battery pack |
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KR20220105948A (ko) | 2022-07-28 |
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