WO2022080908A1 - 전지 모듈 및 이를 포함하는 전지 팩 - Google Patents
전지 모듈 및 이를 포함하는 전지 팩 Download PDFInfo
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- WO2022080908A1 WO2022080908A1 PCT/KR2021/014272 KR2021014272W WO2022080908A1 WO 2022080908 A1 WO2022080908 A1 WO 2022080908A1 KR 2021014272 W KR2021014272 W KR 2021014272W WO 2022080908 A1 WO2022080908 A1 WO 2022080908A1
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- Prior art keywords
- flame
- battery
- cell stack
- battery cell
- cap sheet
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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
- H01M50/233—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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- 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
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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
- H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
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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
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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
- 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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- H—ELECTRICITY
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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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- 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
- H01M50/242—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 against vibrations, collision impact or swelling
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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
- 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
- H01M50/258—Modular batteries; Casings provided with means for assembling
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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
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
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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
- H01M50/271—Lids or covers for the racks or secondary casings
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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
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
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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
- H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
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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
- H01M50/394—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
- 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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
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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
- 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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
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- 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
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/20—Pressure-sensitive devices
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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 present invention relates to a battery module and a battery pack including the same, and more particularly, to a battery module capable of controlling the discharge direction of a flame even when thermal runaway occurs, and to a battery pack including the same
- a rechargeable battery capable of charging and discharging is a measure to solve air pollution such as conventional gasoline vehicles using fossil fuels, and electric vehicles (EVs), hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles ( P-HEV) is being used as a power source, and the need for the development of secondary batteries is increasing.
- EVs electric vehicles
- HEVs hybrid electric vehicles
- P-HEV plug-in hybrid electric vehicles
- lithium secondary batteries do not have much memory effect compared to nickel-based secondary batteries, so charging and discharging are possible freely. , the self-discharge rate is very low and the energy density is high.
- Such a lithium secondary battery mainly uses a lithium-based oxide and a carbon material as a positive electrode active material and a negative electrode active material, respectively.
- a lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate to which the positive electrode active material and the negative electrode active material are applied, respectively, are disposed with a separator interposed therebetween, and a casing for sealing and housing the electrode assembly together with an electrolyte, that is, a battery case.
- a lithium secondary battery may be classified into a can-type secondary battery in which an electrode assembly is embedded in a metal can and a pouch-type secondary battery in which an electrode assembly is embedded in a pouch of an aluminum laminate sheet, depending on the shape of the exterior material.
- a battery module in which a plurality of battery cells are electrically connected this is used in such a battery module, a plurality of battery cells are connected in series or parallel to each other to form a cell assembly, so that capacity and output are improved.
- one or more battery modules may be mounted together with various control and protection systems, such as a battery management system (BMS) and a cooling system, to form a battery pack.
- BMS battery management system
- a battery module including at least one battery cell is first configured, and other components are added using the at least one battery module to configure the battery pack. How to do it is common
- the number of battery modules included in the battery pack or the number of battery cells included in the battery module may be variously set according to a required output voltage or charge/discharge capacity.
- Embodiments of the present invention are proposed to solve the above problems, and provide a battery module capable of inducing heat and flame in a specific direction when ignition occurs in the battery module, and a battery pack including the same. The purpose.
- a battery module includes a battery cell stack including one or more battery cells each including an electrode lead, a module frame accommodating the battery cell stack, and the battery cell stack and the module frame and a flame-retardant cap sheet disposed therebetween to cover a portion of the battery cell stack, wherein the flame-retardant cap sheet includes a portion of the battery cell stack from either a front or rear surface in a longitudinal direction of the battery cell stack. is placed so as not to cover it.
- the flame-retardant cap sheet may include one or more openings opened to take out the electrode lead to the outside in a portion of the front part and the rear part where the flame-retardant cap sheet is completely covered.
- the flame-retardant cap sheet may include a flame-retardant material including at least one selected from silicone and mica.
- the battery cell stack further includes a pair of end plates disposed at the longitudinal ends of the battery cell stack, wherein the flame-retardant cap sheet in a portion completely covered with the flame-retardant cap sheet among the front part and the rear part is the end plate and the battery cell stack It can be located between the sieves.
- the flame-retardant cap sheet may not be disposed between the end plate and the battery cell stack in a portion not covered by the flame-retardant cap sheet among the front and rear portions.
- At least a portion of the flame-retardant cap sheet may include a plurality of vent holes.
- the plurality of vent holes may be disposed to correspond to an upper surface of the battery cell stack.
- a flame may be induced to a front or rear portion not covered by the flame-retardant cap sheet.
- the method may further include a bus bar frame disposed between the flame retardant cap sheet and an upper surface of the module frame and including a bus bar electrically connected to the electrode lead.
- a battery pack according to another embodiment of the present invention may include the at least one battery module, and a pack case for packaging the at least one battery module.
- a battery module capable of inducing a discharge direction of heat and flame in a specific direction when ignition occurs in the battery module, and a battery pack including the same.
- FIG. 1 is a perspective view of a battery module according to an embodiment of the present invention.
- FIG. 2 is an exploded perspective view of the battery module of FIG. 1 .
- FIG. 3 is a view showing the direction of the flame in a state in which the battery cell stack and the flame-retardant cap sheet are combined in the battery module of FIG. 2 .
- FIG. 4 is a view showing the direction of the flame in the battery module of FIG.
- FIG. 5 is a view illustrating a bonding state of a battery cell stack and a flame-retardant cap sheet in a battery module according to another embodiment of the present invention.
- a part of a layer, film, region, plate, etc. when a part of a layer, film, region, plate, etc. is said to be “on” or “on” another part, it includes not only cases where it is “directly on” another part, but also cases where there is another part in between. . Conversely, when we say that a part is “just above” another part, we mean that there is no other part in the middle.
- the reference part means to be located above or below the reference part, and to necessarily mean to be located “on” or “on” in the direction opposite to gravity not.
- FIG. 1 is a perspective view of a battery module according to an embodiment of the present invention
- FIG. 2 is an exploded perspective view of the battery module of FIG. 1
- FIG. 3 is a combination of a battery cell stack and a flame-retardant cap sheet in the battery module of FIG. It is a view showing the direction of the flame in the state
- FIG. 4 is a view showing the direction of the flame in the battery module of FIG.
- the battery module 100 includes a battery cell stack 110 including one or more battery cells, and a module frame for accommodating the battery cell stack 110 . 200 and a pair of end plates 300 positioned at both ends in the longitudinal direction of the battery cell stack 110 and coupled to the opening of the module frame 200 .
- the battery cell stack 110 is an assembly of secondary batteries including a plurality of battery cells 112 .
- the battery cell stack 110 may include a plurality of battery cells 112 , and each battery cell 112 includes an electrode lead 114 .
- the battery cell 112 may be a pouch-type battery cell having a plate shape, but is not limited thereto.
- the electrode lead 114 is a positive electrode lead or a negative electrode lead, and an end of the electrode lead 114 of each battery cell 112 may be bent in one direction, whereby the electrode lead of the other adjacent battery cell 112 is formed. It may abut against the end.
- the two electrode leads 114 in contact with each other may be fixed to each other through welding or the like, and through this, electrical connection between the battery cells 112 in the battery cell stack 110 may be made.
- a bus bar frame 500 accommodated in the module frame 200 together with the battery cell stack 110 may be provided.
- the bus bar frame 500 includes an upper frame 510 located on the upper portion of the cell assembly 400 , a front frame 520 located on the front of the battery cell stack 110 , and a rear side of the battery cell stack 110 . It may include a rear frame 530 , and a bus bar 540 connected to the electrode leads 114 of the battery cells constituting the battery cell stack 110 is mounted on the front frame 520 and the rear frame 530 .
- the bus bar frame 500 may be coupled to the flame retardant cap sheet 400 , which will be described later, in a state in which it is formed to cover a portion of the battery cell stack 110 .
- the upper frame 510 of the busbar frame 500 is disposed on the flame-retardant cap sheet 400
- the front frame 520 is the battery cell stack 110 covered by the flame-retardant cap sheet 400 .
- the bus bar 540 disposed on the front frame 520 may be coupled to the electrode lead 114 drawn out through the opening 410 of the flame-retardant cap sheet 400 .
- the plurality of battery cells 112 are vertically stacked so that the electrode leads 114 are aligned in one direction to form the battery cell stack 110 .
- the battery cell stack 110 is accommodated in the module frame 200 having at least one opening opened in the longitudinal direction of the battery cell stack 110 .
- the electrode leads 114 are drawn out of the module frame 200 through the opening, and the drawn electrode leads 114 are the front frame 520 and the rear frame 530 of the bus bar frame 500 .
- the bus bar frame 500 may be made of an insulating material, for example, a non-conductive synthetic resin, and the bus bar 540 may be made of a conductive metal material.
- the battery module 100 extends in the longitudinal direction of the module frame 200 from the upper portion of the battery cell stack 110 and is mounted on a flexible printed circuit board configured to sense the battery cell 112 (Flexible Printed Circuit Board, FPCB) (not shown) may be included.
- the battery module 100 may include various electronic components, and may include, for example, an internal circuit board (ICB) and a battery management system (BMS). Electrical components such as the ICB and BMS board may be electrically connected to the plurality of battery cells 112 .
- ICB internal circuit board
- BMS battery management system
- the module frame 200 may be formed to cover four surfaces except for both ends of the battery cell stack 110 . That is, in FIG. 2 , the battery cell stack 110 has an upper surface and a bottom surface respectively on the upper and lower portions in the z-axis direction, and the module frame 200 is positioned corresponding to the upper surface of the battery cell stack 110 . ), the lower surface of the module frame 200 is located at a position corresponding to the bottom surface, and a pair of side surfaces corresponding to the side surface of the battery cell stack may be located between the upper surface and the lower surface. there is. At this time, the module frame 200 may have a rectangular tubular shape as shown in FIG.
- U consisting of a lower surface and a pair of side surfaces vertically coupled to both sides of the lower surface. It may have a structure in which the female frame and the upper plate coupled thereto to form an upper surface are combined. In addition, it may be a combined structure of an inverted U-shaped frame having an upper surface and both sides, and a lower plate forming a lower surface, and is not particularly limited.
- the module frame 200 may be made of a metal material.
- the metal material may be at least one selected from steel and aluminum.
- An end plate 300 is coupled to each of the open both ends of the module frame 200 .
- the end plate 300 may be formed of a metal material to have rigidity to protect components such as the internal battery cell stack 110 and the bus bar frame 500 .
- the end plate 300 formed of a metal material may be coupled to the module frame 200 also formed of a metal material by a method such as welding.
- a flame-retardant cap sheet 400 is included between the battery cell stack 110 and the module frame 200 .
- the flame-retardant cap sheet 400 covers either side in the longitudinal direction of the battery cell stack 110, that is, in the longitudinal direction having the front and rear parts indicated by F and R as a direction parallel to the y-axis direction in FIG. , the other side may be formed so as not to cover it. In this embodiment, as shown in FIG.
- the flame-retardant cap sheet 400 is formed to cover the front part (F), it is not limited thereto, and it is also possible to be formed to cover the rear part (R) And, as will be described later, it may be configured so that the direction in which the generated flame is to be discharged is exposed, that is, not covered by the flame-retardant cap sheet 400 .
- the flame-retardant cap sheet 400 In the portion covered by the flame-retardant cap sheet 400, that is, in the front portion F in FIG. 2, the flame-retardant cap sheet 400 is not only the upper surface, the lower surface and the side surface of the battery cell stack 110, It is formed so as to cover the portion facing the end plate 300 . Accordingly, in the front portion F, the flame-retardant cap sheet 400 may be disposed between the end plate 300 and the battery cell stack 110 . At this time, one or more openings 410 opened corresponding to the position of the electrode lead 114 are provided in the flame-retardant cap sheet 400 so that the electrode lead 114 included in the battery cell 112 can be withdrawn to the outside. can be formed.
- the flame-retardant cap sheet 400 is a portion of the upper surface, the lower surface, and the side of the battery cell stack 110 . It is formed so as not to be covered, and accordingly, the portion facing the end plate 300 is also formed not to be covered. That is, the length (F-R direction) of the flame-retardant cap sheet 400 is formed to be shorter than the length of the battery cell stack 110 , and one side has an open structure, and the battery cell stack 110 is accommodated therein. In this case, as shown in FIG. 2 , a portion of the battery cell stack 110 is exposed along the periphery of the rear portion R. When the battery module 100 is manufactured, such a flame-retardant cap sheet 40 is covered on the magnetic cell stack 110 and then combined with the bus bar frame 500 described above to form an electrode lead 114 and a bus bar 540 . ) is welded.
- the flame-retardant cap sheet 400 may be formed of a thin sheet made of a flame-retardant material.
- the flame-retardant material may include at least one selected from silicon and mica.
- the present invention is not limited thereto, and any commercially available material that has flame retardancy and can be processed into a sheet shape may be appropriately selected and used.
- the portion covered by the flame-retardant cap sheet 400 made of a flame-retardant material may block the flame from spreading to the corresponding portion when a flame occurs inside. That is, as shown in FIGS. 3 and 4 , the flame and venting gas generated in the battery cell stack 110 are discharged to the portion not covered by the flame-retardant cap sheet 400 , that is, the rear portion R side, and the flame and preventing the venting gas from being randomly discharged to the outside, and being guided in one direction to be discharged.
- the discharge direction in the battery pack and device in which the battery module 100 is disposed is directed to a place where there are relatively few modules or parts adjacent to it.
- the discharge direction in the battery pack and device in which the battery module 100 is disposed is directed to a place where there are relatively few modules or parts adjacent to it.
- the damage of the modules and the like disposed in the other portion can be prevented and delayed as much as possible. Therefore, by controlling the flame direction in the battery module 100, it is possible to improve the safety in the battery module 100 and the battery pack including the same.
- FIG. 5 is a view illustrating a bonding state of a battery cell stack and a flame-retardant cap sheet in a battery module according to another embodiment of the present invention.
- FIG. 5 differs only in the shape of the flame-retardant cap sheet 400 compared to the embodiment described above, and the rest are the same, and descriptions of the same parts will be omitted.
- the flame-retardant cap sheet 400 includes a plurality of vent holes 420 . More specifically, the plurality of vent holes 420 may be disposed to correspond to the upper surface of the battery cell stack 110 .
- the shape is not particularly limited. As shown in FIG. 5 , it may be formed to correspond to the entire upper surface of the battery cell stack 110 , but is not limited thereto, and may be formed to correspond to a portion of the upper surface of the battery cell stack 110 . In addition, as shown in FIG. 5 , they may be arranged in regular rows, but are not limited thereto, and may be arranged randomly.
- the vent hole 420 By providing the vent hole 420, the flame and gas that may be additionally accumulated therein can be discharged separately from the flame and gas being discharged to the rear portion R where the flame retardant cap sheet 400 is not formed. do. That is, through this, it is possible to prevent the flame from accumulating inside the flame-retardant cap sheet 400, thereby preventing the explosive heat conduction phenomenon. Therefore, the safety of the battery module 100 can be further improved.
- the direction of the flame and the venting gas can be induced in a predetermined direction, In the battery pack and device in which the battery module 100 is disposed, the discharge direction is directed toward a place where there are relatively few adjacent modules or components, so that even if ignition starts in any one module, diffusion to other adjacent modules or devices is maximized. It is possible to prevent In addition, even if other modules or components exist in the discharge direction, since the discharge of the flame and the venting gas is induced in only one direction, the damage of the modules and the like disposed in the other portion can be prevented and delayed as much as possible.
- the flame direction in the battery module 100 it is possible to improve the safety in the battery module 100 and the battery pack including the same.
- one or more battery modules according to an embodiment of the present invention may be packaged in a pack case to form a battery pack.
- the above-described battery module and battery pack including the same may be applied to various devices.
- a device may be applied to transportation means such as an electric bicycle, an electric vehicle, and a hybrid vehicle, but the present invention is not limited thereto, and is applicable to various devices that can use a battery module and a battery pack including the same. It belongs to the scope of the invention.
Landscapes
- 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)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
Claims (10)
- 각각 전극 리드를 포함하는 하나 이상의 전지 셀을 포함하는 전지 셀 적층체,상기 전지 셀 적층체를 수납하는 모듈 프레임, 및상기 전지 셀 적층체와 상기 모듈 프레임 사이에 배치되어 상기 전지셀 적층체의 일부분을 덮는 난연 캡 시트를 포함하고,상기 난연 캡 시트는, 상기 전지 셀 적층체의 길이 방향의 전면부 및 후면부 중 어느 한 쪽에서 상기 전지 셀 적층체의 일부는 덮지 않도록 배치되는 전지 모듈.
- 제1항에서,상기 전면부 및 후면부 중 상기 난연 캡 시트가 완전히 덮인 부분에서 상기 난연 캡 시트는 상기 전극 리드를 외부로 인출하기 위하여 개구된 하나 이상의 개구부를 포함하는 전지 모듈.
- 제1항에서,상기 난연 캡 시트는 실리콘, 운모로부터 선택되는 적어도 하나를 포함하는 난연 재료를 포함하는 전지 모듈.
- 제1항에서,상기 전지 셀 적층체의 길이 방향 단부에 배치되는 한 쌍의 엔드 플레이트를 더욱 포함하고,상기 전면부 및 후면부 중 상기 난연 캡 시트가 완전히 덮인 부분에서 상기 난연 캡 시트는 상기 엔드 플레이트와 상기 전지 셀 적층체 사이에 위치하는 전지 모듈.
- 제4항에서,상기 전면부 및 후면부 중 상기 난연 캡 시트에 의해 덮이지 않는 부분에서 상기 엔드 플레이트와 상기 전지 셀 적층체 사이에는 상기 난연 캡 시트가 배치되지 않는 전지 모듈.
- 제1항에서,상기 난연 캡 시트는 적어도 일부에 복수의 벤트 홀을 포함하는 전지 모듈.
- 제6항에서,상기 복수의 벤트 홀은 상기 전지 셀 적층체의 상면에 대응하여 배치되는 전지 모듈.
- 제1항에서,상기 전지 셀 적층체에서 발화될 경우, 상기 난연 캡 시트에 의해 덮이지 않은 전면부 또는 후면부로 화염이 유도되는 전지 모듈.
- 제1항에서,상기 난연 캡 시트와 상기 모듈 프레임의 상부면 사이에 배치되고, 상기 전극 리드와 전기적으로 연결되는 버스바를 포함하는 버스바 프레임을 더욱 포함하는 전지 모듈.
- 제1항 내지 제9항 중 어느 한 항에 따른 적어도 하나의 전지 모듈; 및상기 적어도 하나의 전지 모듈을 패키징하는 팩 케이스를 포함하는 전지 팩.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21880555.4A EP4170792A4 (en) | 2020-10-14 | 2021-10-14 | BATTERY MODULE AND BATTERY PACK INCLUDING SAME |
| JP2022560971A JP7625318B2 (ja) | 2020-10-14 | 2021-10-14 | 電池モジュールおよびこれを含む電池パック |
| US17/916,472 US20230155243A1 (en) | 2020-10-14 | 2021-10-14 | Battery module and battery pack including the same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020200132685A KR102851455B1 (ko) | 2020-10-14 | 2020-10-14 | 전지 모듈 및 이를 포함하는 전지 팩 |
| KR10-2020-0132685 | 2020-10-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022080908A1 true WO2022080908A1 (ko) | 2022-04-21 |
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ID=81096201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2021/014272 Ceased WO2022080908A1 (ko) | 2020-10-14 | 2021-10-14 | 전지 모듈 및 이를 포함하는 전지 팩 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20230155243A1 (ko) |
| EP (1) | EP4170792A4 (ko) |
| JP (1) | JP7625318B2 (ko) |
| KR (1) | KR102851455B1 (ko) |
| CN (2) | CN114361677B (ko) |
| WO (1) | WO2022080908A1 (ko) |
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| EP4300662A3 (en) * | 2022-06-07 | 2024-12-04 | SK On Co., Ltd. | Battery module |
| EP4383419A4 (en) * | 2022-07-20 | 2025-03-12 | LG Energy Solution, Ltd. | BATTERY PACK AND VEHICLE COMPRISING IT |
| AU2023266297B2 (en) * | 2023-05-18 | 2026-04-09 | Jinko Energy Storage Technology Co. Ltd. | Battery module and battery pack |
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| KR102851455B1 (ko) * | 2020-10-14 | 2025-08-26 | 주식회사 엘지에너지솔루션 | 전지 모듈 및 이를 포함하는 전지 팩 |
| USD997879S1 (en) * | 2022-04-18 | 2023-09-05 | Antigravity Batteries Llc | Battery with posts |
| KR102946788B1 (ko) * | 2022-07-01 | 2026-03-31 | 주식회사 엘지에너지솔루션 | 배터리 모듈, 배터리 팩 및 이를 포함하는 자동차 |
| JP2025514782A (ja) * | 2022-08-03 | 2025-05-09 | エルジー エナジー ソリューション リミテッド | バッテリーモジュール及びそれを含むバッテリーパック |
| CN119072818A (zh) * | 2022-08-31 | 2024-12-03 | 株式会社 Lg新能源 | 电池组和包括该电池组的车辆 |
| KR20240045453A (ko) * | 2022-09-29 | 2024-04-08 | 주식회사 엘지에너지솔루션 | 전지 셀 및 이를 포함하는 전지 모듈 |
| EP4465431A4 (en) * | 2022-12-08 | 2025-06-04 | LG Energy Solution, Ltd. | Battery module, and battery pack and vehicle comprising same |
| EP4468466A4 (en) * | 2022-12-12 | 2025-08-13 | Lg Energy Solution Ltd | ENHANCED SAFETY BATTERY MODULE |
| KR20240100138A (ko) * | 2022-12-22 | 2024-07-01 | 주식회사 엘지에너지솔루션 | 벤팅 구조가 개선된 전지 모듈 |
| KR20240117391A (ko) * | 2023-01-25 | 2024-08-01 | 주식회사 엘지에너지솔루션 | 난연 플레이트를 포함하는 전지 모듈 |
| KR20240117396A (ko) * | 2023-01-25 | 2024-08-01 | 주식회사 엘지에너지솔루션 | 난연 프레임을 포함하는 전지 모듈 |
| KR20240142947A (ko) * | 2023-03-22 | 2024-10-02 | 주식회사 엘지에너지솔루션 | 배터리 모듈 및 이를 포함하는 배터리 팩 |
| KR20250024337A (ko) * | 2023-08-11 | 2025-02-18 | 주식회사 엘지에너지솔루션 | 전지 모듈 및 이를 포함하는 전지 팩 |
| KR20250026660A (ko) * | 2023-08-17 | 2025-02-25 | 주식회사 엘지에너지솔루션 | 안전성이 강화된 배터리 모듈 및 배터리 팩 |
| KR20250058423A (ko) * | 2023-10-23 | 2025-04-30 | 주식회사 엘지에너지솔루션 | 전지 모듈 및 이를 포함하는 전지팩 |
| KR20250125735A (ko) * | 2024-02-15 | 2025-08-22 | 주식회사 엘지에너지솔루션 | 배터리 모듈, 이를 포함하는 배터리 팩 및 자동차 |
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| US12308405B2 (en) | 2022-06-07 | 2025-05-20 | Sk On Co., Ltd. | Battery module |
| EP4383419A4 (en) * | 2022-07-20 | 2025-03-12 | LG Energy Solution, Ltd. | BATTERY PACK AND VEHICLE COMPRISING IT |
| AU2023266297B2 (en) * | 2023-05-18 | 2026-04-09 | Jinko Energy Storage Technology Co. Ltd. | Battery module and battery pack |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114361677B (zh) | 2025-04-22 |
| CN216698555U (zh) | 2022-06-07 |
| EP4170792A4 (en) | 2024-01-03 |
| KR102851455B1 (ko) | 2025-08-26 |
| JP7625318B2 (ja) | 2025-02-03 |
| JP2023521703A (ja) | 2023-05-25 |
| KR20220049262A (ko) | 2022-04-21 |
| US20230155243A1 (en) | 2023-05-18 |
| EP4170792A1 (en) | 2023-04-26 |
| CN114361677A (zh) | 2022-04-15 |
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