WO2024135973A1 - 배터리 모듈, 이를 포함하는 배터리 팩 및 자동차 - Google Patents
배터리 모듈, 이를 포함하는 배터리 팩 및 자동차 Download PDFInfo
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- WO2024135973A1 WO2024135973A1 PCT/KR2023/010606 KR2023010606W WO2024135973A1 WO 2024135973 A1 WO2024135973 A1 WO 2024135973A1 KR 2023010606 W KR2023010606 W KR 2023010606W WO 2024135973 A1 WO2024135973 A1 WO 2024135973A1
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- Prior art keywords
- battery
- blocking member
- case
- battery cells
- module
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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
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or 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
- 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
- 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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch 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
- H01M10/65—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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
- H01M50/143—Fireproof; Explosion-proof
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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
- 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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- 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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- 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
- H01M50/289—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
- H01M50/291—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 characterised by their shape
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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
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
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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
- H01M50/50—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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- 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
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
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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 present invention relates to a battery module, a battery pack including the same, and a vehicle. More specifically, it relates to a battery module with improved safety, a battery pack including the same, and a vehicle.
- Secondary batteries which are easy to apply depending on the product group and have electrical characteristics such as high energy density, are used not only in portable devices but also in electric vehicles (EV, Electric Vehicle) or hybrid vehicles (HEV, Hybrid Electric Vehicle) that are driven by an electrical drive source. It is universally applied. These secondary batteries are attracting attention as a new energy source for improving eco-friendliness and energy efficiency, not only because they have the primary advantage of being able to dramatically reduce the use of fossil fuels, but also because they do not generate any by-products due to energy use.
- EV Electric Vehicle
- HEV Hybrid Electric Vehicle
- Types of secondary batteries currently widely used include lithium ion batteries, lithium polymer batteries, nickel cadmium batteries, nickel hydrogen batteries, and nickel zinc batteries.
- the operating voltage of these unit secondary battery cells is approximately 2.5V to 4.5V. Therefore, when a higher output voltage is required, a battery pack is formed by connecting a plurality of battery cells in series. Additionally, a battery pack may be constructed by connecting multiple battery cells in parallel depending on the charge/discharge capacity required for the battery pack. Accordingly, the number of battery cells included in the battery pack can be set in various ways depending on the required output voltage or charge/discharge capacity.
- a battery module containing at least one battery cell is first configured, and other components are added using this at least one battery module. This is a common method of constructing a battery pack or battery rack.
- the purpose of the present invention is to provide a battery module that can improve safety against thermal events, a battery pack including the same, and a vehicle.
- the present invention provides a battery module, comprising: a cell assembly including a plurality of battery cells stacked on each other; a module case accommodating the cell assembly; and a bus bar assembly coupled to the module case and electrically connected to the plurality of battery cells, wherein the cell assembly is configured to connect adjacent batteries in the stacking direction of the plurality of battery cells when a thermal event of at least one battery cell occurs.
- a battery module is provided that includes a blocking member configured to cover a portion of the plurality of battery cells to block heat propagation to the cell side.
- the blocking member may guide the ejected water ejected from the at least one battery cell to be ejected in a specific direction during a thermal event of the at least one battery cell.
- At least one venting part for discharging the ejected material is provided at the bottom of the module case, and the blocking member has an open lower part to guide and eject the ejected material toward the venting part of the module case. You can have it.
- the cell assembly may include a thermal barrier member disposed between the plurality of battery cells in the stacking direction of the plurality of battery cells.
- the thermal barrier member may be in contact with the blocking member in the stacking direction of the plurality of battery cells.
- both ends of the blocking member may be disposed close to the bus bar assembly.
- the bus bar assembly covers both sides of the plurality of battery cells, and both ends of the blocking member may be disposed adjacent to the bus bar assembly.
- the blocking member may be made of a flexible material.
- the blocking member may cover upper ends and both edge portions of the plurality of battery cells.
- the blocking member may cover the front and rear portions of both edge portions of the plurality of battery cells in the stacking direction of the plurality of battery cells.
- the plurality of battery cells each include an electrode assembly; a battery case including a case body accommodating the electrode assembly and a case terrace extending stepwise from both sides of the case body; and a pair of electrode leads connected to the electrode assembly, protruding from the case terrace of the battery case and connected to the bus bar assembly, wherein the blocking member includes an upper portion of the case body and a front portion of the case terrace. and can cover the rear part.
- a sealing portion is formed at the upper end of the case body, is connected to the case terrace, and seals the inside of the case body, and the blocking member may cover the sealing portion.
- a guide slit for passing the pair of electrode leads may be formed in the blocking member to prevent interference with the pair of electrode leads.
- the present invention provides a battery pack, including at least one battery module according to the above-described embodiments; and a pack case accommodating the at least one battery module.
- the present invention provides an automobile, characterized in that it includes at least one battery pack according to the above-described embodiment.
- a battery module capable of improving safety against thermal events a battery pack including the same, and a vehicle can be provided.
- the present invention may have various other effects, and these will be described in each implementation configuration, or the description of effects that can be easily inferred by those skilled in the art will be omitted.
- FIG. 1 is a diagram for explaining a battery module according to an embodiment of the present invention.
- Figure 2 is an exploded perspective view of the battery module of Figure 1.
- FIG. 3 is a partial cross-sectional view illustrating a connection portion between the cell assembly and the bus bar assembly of the battery module of FIG. 2.
- FIG. 4 is a diagram for explaining the cell assembly of the battery module of FIG. 1.
- FIG. 5 is a diagram showing a blocking member mounted on a battery cell of the cell assembly of FIG. 4.
- Figure 6 is a diagram for explaining the installation of the blocking member on the battery cell side of Figure 5.
- Figure 7 is a diagram for explaining the blocking member of Figure 6.
- Figure 8 is a side view of the blocking member of Figure 7.
- Figure 9 is a diagram for explaining a blocking member according to another embodiment of the present invention.
- Figure 10 is a side view of the blocking member of Figure 9.
- Figure 11 is a diagram for explaining a blocking member according to another embodiment of the present invention.
- Figure 12 is a side view of the blocking member of Figure 11.
- FIG. 13 is a diagram illustrating a directional venting path of ejections such as flame or gas during a thermal event due to an abnormality of at least one battery cell of the battery module of FIG. 1.
- FIG. 14 is a diagram for explaining the directional venting path of ejections such as flame or gas from a battery cell during the thermal event of FIG. 12.
- FIG. 15 is a diagram illustrating a directional venting guide and blocking heat propagation through a blocking member during a thermal event of a battery cell in which the abnormal situation of FIG. 13 occurs.
- Figure 16 is a diagram for explaining a battery pack according to an embodiment of the present invention.
- Figure 17 is a diagram for explaining a car according to an embodiment of the present invention.
- FIG. 1 is a diagram for explaining the battery module 10 according to an embodiment of the present invention
- FIG. 2 is an exploded perspective view of the battery module 10 of FIG. 1
- FIG. 3 is a diagram of the battery module 10 of FIG. 2. This is a partial cross-sectional view to explain the connection portion of the cell assembly 100 and the bus bar assembly 300.
- the battery module 10 may include a cell assembly 100, a module case 200, and a bus bar assembly 300.
- the cell assembly 100 may include a plurality of battery cells 110 stacked on each other.
- the plurality of battery cells 110 may be electrically connected to each other and may be connected to a bus bar assembly 300, which will be described later.
- These plurality of battery cells 110 are secondary batteries and may be provided as pouch-type secondary batteries.
- the module case 200 forms the exterior of the battery module 10 and can accommodate the cell assembly 100. To this end, the module case 200 may be provided with an accommodating space capable of accommodating the cell assembly 100.
- the bus bar assembly 300 may be combined with the module case 200 to form the exterior of the battery module 10 together with the module case 200.
- the bus bar assembly 300 is electrically connected to the plurality of battery cells 110 of the cell assembly 100 and can sense the voltage of the plurality of battery cells 110.
- the cell assembly 100 may include a blocking member 130.
- the blocking member 130 moves in the stacking direction (Y-axis) of the plurality of battery cells 110 during a thermal event due to an abnormal situation such as overheating of at least one battery cell 110 among the plurality of battery cells 110. direction) and may be configured to cover a portion of the plurality of battery cells 110 to block heat propagation toward the adjacent battery cells 110.
- the battery cell 110 in which an abnormal situation occurs during the thermal event may have a high temperature due to overheating and may generate ejections such as flame or gas. If the heat, flame, or gas ejected from a specific battery cell 110 spreads to the adjacent battery cell 110, it may lead to thermal runaway of the adjacent battery cell 110, resulting in serial ignition or explosion of the battery cells 110. leads to a greater risk of
- the battery cell 110 in which an abnormal situation occurs during the thermal event is provided through the blocking member 130 that covers a portion of the plurality of battery cells 110. It is possible to effectively prevent the propagation of ejections such as heat, flame, or gas generated from to the adjacent battery cell 110.
- the battery module 10 can minimize the risk of secondary damage, such as chain ignition or explosion, that may be caused by the thermal event through the blocking member 130.
- the blocking member 130 may guide the ejected water ejected from the at least one battery cell 110 to be ejected in a specific direction during a thermal event of the at least one battery cell 110.
- the above-described ejections such as flame or gas may be generated within the battery cell 110 or the module case 200 where an abnormal situation occurs. This ejection may increase the internal pressure of the module case 200 of the battery module 10 or ignite surrounding components. Therefore, it is necessary to quickly expel the jet out of the module case 200 during a thermal event.
- the blocking member 130 blocks heat propagation of adjacent battery cells 110 and can guide the ejected material to be ejected in a specific direction. That is, the blocking member 130 can control the ejection path of the ejected material by guiding directional venting in a specific direction so that the ejected material, such as gas or flame, can be expelled more quickly out of the module case 200. there is.
- At least one venting part 215 may be provided at the bottom (-Z-axis direction) of the module case 200 to discharge the ejected water.
- the venting portion 215 may be provided in plural pieces and may be provided on both sides of the bottom of the module case 200.
- the venting unit 215 may expel ejections such as flame or gas inside the module case 200 out of the module case 200 in situations such as the thermal event.
- the venting unit 215 may be provided as a venting hole with a predetermined opening or may be mounted on the module case 200 as a separate venting unit. Meanwhile, the venting portion 215 may be melted or fractured above a predetermined temperature or pressure in a situation such as the thermal event, and may be provided in a structure that opens to communicate the inside and outside of the module case 200. You can.
- the blocking member 130 may have an open lower portion to guide and eject the ejected material toward the venting portion 215 of the module case 200. During the thermal event, the ejected water is guided toward the venting portion 215 provided at the bottom of the module case 200 through the open lower part of the blocking member 130 and can quickly escape out of the venting portion 215. .
- the blocking member 130 guides ejections such as gas or flame generated during the thermal event in a specific direction, specifically, toward the lower side (-Z axis direction) of the battery module 10. Thus, it can be exported out of the battery module 10.
- FIG. 4 is a diagram for explaining the cell assembly 100 of the battery module 10 of FIG. 1.
- the cell assembly 100 may include a thermal barrier member 150.
- the thermal barrier member 150 may be disposed between the plurality of battery cells 110 in the stacking direction (Y-axis direction) of the plurality of battery cells 110.
- the thermal barrier member 150 together with the blocking member 130, prevents heat propagation to the adjacent battery cell 110 caused by heat, gas, or flame of the battery cell 110 in which an abnormal situation occurs during a thermal event. You can block it.
- the thermal barrier member 150 may be provided in plural pieces and may be sized to cover the battery cells 110 in the stacking direction (Y-axis direction) of the battery cells 110 .
- the thermal barrier member 150 may be in contact with the blocking member 130 in the stacking direction (Y-axis direction) of the plurality of battery cells 110. Accordingly, the plurality of battery cells 110 are connected to the blocking member 130 and the thermal barrier member 150 except for the open lower part of the blocking member 130 and the guide slit 135 area, which will be described later. can be surrounded by
- the battery cell 110 adjacent to the battery cell 110 in which an abnormal situation occurs during a thermal event through the blocking member 130 and the thermal barrier member 150 Heat propagation to the (110) side can be more reliably prevented.
- a portion of the blocking member 130 may be disposed close to the bus bar assembly 300. Specifically, both ends of the blocking member 130 may be disposed close to the bus bar assembly 300. More specifically, the bus bar assembly 300 may cover both sides (X-axis direction) of the plurality of battery cells 110. Both ends of the blocking member 130 may be disposed adjacent to the bus bar assembly 300.
- both ends of the blocking member 130 are disposed close to the bus bar assembly 300, so that adjacent battery cells that may occur in the vicinity of the bus bar assembly 300 during the thermal event ( 110) Heat propagation to the side can be blocked more effectively.
- the blocking member 130 may be made of a flexible material. Accordingly, the blocking member 130 can increase the convenience of mounting with the battery cells 110, and can also absorb or offset assembly tolerances with surrounding components when mounted. In addition, the blocking member 130 may have a certain amount of elasticity and may cushion external shocks that may be applied to the battery cells 110.
- the blocking member 130 may include a fireproof material.
- the blocking member 130 may be made of glass fiber, rubber, or silicon.
- the blocking member 130 may include an insulating material. Accordingly, the blocking member 130 can effectively prevent electrical problems such as electricity being passed from the battery cell 110 in which an abnormal situation occurs to the adjacent battery cell 110. Additionally, the blocking member 130 may include a flame retardant material. In this way, the blocking member 130 may be prepared to include fire-resistant, insulating, and flame-retardant materials that can increase the effect of blocking or delaying heat propagation during the thermal event.
- the blocking member 130 may be provided in plural pieces corresponding to the number of battery cells 110.
- the plurality of blocking members 130 may each cover a portion of the plurality of battery cells 110 . Therefore, in one embodiment of the present invention, the blocking member 130 is provided in plural pieces corresponding to the number of the battery cells 110, thereby blocking or delaying heat propagation for each battery cell 110 and the lower
- the directional venting guide can be uniformly implemented in any battery cell 110 among the plurality of battery cells 110 .
- FIG. 5 is a diagram showing the blocking member 130 mounted on the battery cell 110 of the cell assembly 100 of FIG. 4, and FIG. 6 shows the blocking member 130 toward the battery cell 110 of FIG. 5. This is a drawing to explain the installation.
- the blocking member 130 may cover the upper end and both edge portions of the plurality of battery cells 110. Accordingly, the blocking member 130 can effectively block heat propagation from the upper and both edge sides of the plurality of battery cells 110 to the adjacent battery cells 110 during the thermal event. In addition, the blocking member 130 can guide flames or gases generated during the thermal event to the lower direction (-Z axis direction) of the battery cells 110 as well as the movement of ejections through the above-described cover structure.
- the blocking member 130 includes a front portion (+Y-axis direction) and a rear portion (-Y-axis direction) of both edge portions of the plurality of battery cells 110 in the stacking direction (Y-axis direction) of the plurality of battery cells 110. axial direction) can be covered.
- step space In the case of both edge portions of the plurality of battery cells 110, depending on the characteristic shape of the pouch-type secondary battery, one of the front-back direction (Y-axis direction) or the front-back direction (Y-axis direction) (+Y-axis direction or - In the Y-axis direction), there is a predetermined step space.
- ejected matter generated during the above-described thermal event may flow in and remain there due to convection or the like. If the ejecta, such as flame or gas, stagnates or accumulates within the step space, the risk of propagation to adjacent battery cells 110 increases, and the pressure inside the module case 200 rapidly increases, thereby increasing the battery The possibility of greater secondary damage, such as an explosion of the module 10, may increase.
- the blocking member 130 covers both front and rear directions (Y-axis direction) of both edge portions of the battery cells 110, so that in the stacking direction (Y-axis direction) of the battery cells 110,
- the size of the entire step space can be significantly reduced. Therefore, in one embodiment of the present invention, by reducing the volume of the step space through the blocking member 130, the amount of inflow of ejections such as flame or gas into the step space can be significantly reduced or prevented. , the possibility of mooring of ejections such as flame or gas within the step space can be significantly reduced.
- venting portion 215 of the module case 200 may be provided near the step space at the bottom of the module case 200. This is to allow ejections such as flame or gas within the step space to be expelled out of the module case 200 more quickly.
- the plurality of battery cells 110 may each include an electrode assembly 111, a battery case 112, and a pair of electrode leads 117.
- the electrode assembly 111 may be composed of a positive electrode plate, a negative electrode plate, and a separator. Since the electrode assembly 111 is well known, detailed description will be omitted hereinafter.
- the battery case 112 can accommodate the electrode assembly 111. To this end, the battery case 112 may be provided with a receiving space capable of accommodating the electrode assembly 111.
- the battery case 112 may include a case body 113 and a case terrace 115.
- the case body 113 may accommodate a portion of the electrode assembly 111 and a pair of electrode leads 117 to be described later. To this end, an accommodating space capable of accommodating a portion of the electrode assembly 111 and the pair of electrode leads 117 may be provided in the case body 117.
- the case terrace 115 may extend from both sides of the case body 113.
- the case terrace 115 may be sealed through heat fusion or the like to seal the inside of the case body 113.
- the case terrace 115 extends stepwise from both sides of the case body 113 due to the volume of the electrode assembly 111 inside the case body 113 and the sealing, etc., and the case body 113 ) can be formed to have a predetermined step.
- a predetermined step space may be formed both in front (+Y-axis direction) and behind (-Y-axis direction) of the case terrace 115.
- the pair of electrode leads 117 are connected to the electrode assembly 111 and may protrude from the case terrace 115 of the battery case 112 and be connected to the bus bar assembly 300.
- the pair of electrode leads 117 may each protrude from both sides (X-axis direction) of the case terrace 115 of the battery case 112.
- the blocking member 130 can cover the upper part (+Z-axis direction) of the case body 113, the front part (+Y-axis direction) and the rear part (-Y-axis direction) of the case terrace 115. there is. Accordingly, the blocking member 130 can cover the battery cell 110 in a U-shape with the bottom open.
- a sealing portion 114 may be formed that is connected to the case terrace 115 and seals the inside of the case body 113.
- the sealing portion 114 may be folded at least once to slim the battery cell 110.
- the blocking member 130 may cover the sealing portion 114.
- the sealing part 114 may be unintentionally opened, and in this case, ejections such as flame or gas may leak out of the sealing part 114.
- the blocking member 130 covers the sealing portion 114, it can effectively block ejections such as flame or gas that may be caused by opening the sealing portion 114.
- Each of the plurality of battery cells 110 may include a cell venting unit 118.
- the cell venting unit 118 is for expelling gas or flames that may be generated in abnormal situations such as overheating inside the battery cell 110, and may be provided on one side of the battery case 112. Specifically, the cell venting portion 118 may be provided on both sides of the bottom (-Z-axis direction) of the case body 113. The cell venting portion 118 may melt or break at a predetermined temperature or pressure or higher, thereby opening the inside of the battery case 112 to communicate with the outside.
- the cell venting portion 118 is formed integrally with the battery case 112, and may be provided with a relatively thinner thickness than other parts of the battery case 112 for more rapid melting or fracture. This is only an example, and the cell venting part 118 may be provided as a separate member in the battery case 112 and be provided in a structure that can open the inside of the battery case 112 when the thermal event occurs. Of course.
- a guide slit 135 may be formed in the blocking member 130 to allow the pair of electrode leads 117 to pass through to prevent interference with the pair of electrode leads 117.
- the guide slit 135 may be provided to form a predetermined gap at both ends of the blocking member 130.
- the guide slit 135 can guide easier electrical connection between the pair of electrode leads 117 and the bus bar assembly 300.
- FIG. 7 is a diagram for explaining the blocking member 130 of FIG. 6, and FIG. 8 is a side view of the blocking member 130 of FIG. 7.
- the blocking member 130 may include a blocking cover 131 and a blocking leg 136.
- the blocking cover 131 may be formed to a predetermined length to cover the upper part (+Z-axis direction) of the battery cell 110 (see FIG. 6). Additionally, the blocking cover 131 may have a width that is at least the same as the width of the upper end of the case body 113 of the battery case 112 of the battery cell 110 (see FIG. 6).
- the blocking leg 136 may be bent downward (in the -Z-axis direction) and extended from both ends of the blocking cover 131.
- the blocking leg 136 is formed integrally with the blocking cover 131 and can cover both edge portions of the battery cell 110 (see FIG. 6) in the front-back direction (Y-axis direction).
- the blocking leg 136 may include a first leg 137 and a second leg 138.
- the first leg 137 may be formed at a predetermined length in front of both ends of the blocking cover 131 (+Y-axis direction).
- the second leg 138 is spaced a predetermined distance from the first leg 137 in the front-back direction (Y-axis direction) and has a predetermined length behind both ends of the blocking cover 131 (-Y-axis direction). can be formed.
- a leading guide slit 135 may be formed depending on the distance between the first leg 137 and the second leg 138.
- FIG. 9 is a diagram for explaining a blocking member 170 according to another embodiment of the present invention
- FIG. 10 is a side view of the blocking member 170 of FIG. 9.
- the blocking member 170 according to the present embodiment is similar to the blocking member 130 of the previous embodiment, redundant description of components that are substantially the same or similar to the previous embodiment will be omitted, and hereinafter, the previous embodiment will be described. Let's look at the differences between .
- the blocking member 170 may include a blocking cover 171 and a blocking leg 176.
- the blocking leg 176 may include a first leg 177 and a second leg 178.
- the thickness W1 of the first leg 177 is the front (+) of the case terrace 115 (see FIG. 6) of the battery case 112 (see FIG. 6) of the battery cell 110 (see FIG. 6). It may correspond to a step space formed in the Y-axis direction). For example, the thickness W1 of the first leg 177 may be formed to be at least equal to the thickness of the step space formed in front (+Y-axis direction) of the case terrace 115 (see FIG. 6).
- the thickness W2 of the second leg 178 is the rear (- It may correspond to a step space formed in the Y-axis direction).
- the thickness W2 of the second leg 178 may be formed to be at least equal to the thickness of the step space formed at the rear (-Y-axis direction) of the case terrace 115 (see FIG. 6).
- the guide slit 175 formed between the first leg 177 and the second leg 178 is connected to the case terrace 115 of the battery case 112 of the battery cell 110 (see FIG. 6). ) may have a thickness corresponding to the thickness of.
- FIG. 11 is a diagram for explaining a blocking member 180 according to another embodiment of the present invention
- FIG. 12 is a side view of the blocking member 180 of FIG. 11.
- the blocking member 180 according to the present embodiment is similar to the blocking member 130 of the previous embodiment, redundant description of components that are substantially the same or similar to the previous embodiment will be omitted, and hereinafter, the previous embodiment will be described. Let's look at the differences between .
- FIG. 13 is a diagram for explaining the directional venting path of ejections such as flame or gas during a thermal event due to an abnormality of at least one battery cell 110 of the battery module 10 of FIG. 1
- FIG. 14 is a diagram illustrating It is a diagram to explain the directional venting path of ejections such as flame or gas from the battery cell 110 during the thermal event of Figure 12, and Figure 15 shows a blocking member during the thermal event of the battery cell 110 when the abnormal situation of Figure 13 occurs.
- This is a drawing to explain the appearance of a directional venting guide and blocking heat propagation through (130).
- the ejections (G) such as flame or gas
- the ejections (G) such as flame or gas generated inside the battery cell 110 where an abnormal situation occurred are, It can come out of the battery cell 110 through the cell venting portion 118 provided on both sides of the bottom of the case body 113 of the battery case 112.
- the blocking member 130 is disposed on the upper side (+Z-axis direction) of the battery cell 110 and the front side of both edge portions of the battery cell 110 (+Y-axis direction). direction) and the rear portion (-Y-axis direction), it is possible to effectively prevent heat propagation toward adjacent battery cells 110 in the stacking direction (Y-axis direction) of the battery cells 110.
- the bus bar frame 310 may be provided as a pair.
- the pair of bus bar frames 310 may be provided on both sides of the cell assembly 100 along the longitudinal direction (X-axis direction).
- a barrier member receiving portion 315 may be formed in the bus bar frame 310 to accommodate the ends of the thermal barrier members 150.
- the barrier member receiving portion 315 may be formed on one surface of the bus bar frame 310 facing the cell assembly 100.
- the barrier member receiving portion 315 may be provided as a receiving groove into which the end of the thermal barrier member 150 can be inserted.
- the bus bar member 320 is connected to the electrode leads 117 of the battery cells 110 and may be provided in plural numbers.
- the plurality of bus bar members 320 may be mounted on the bus bar frame 310.
- the terminal member 330 is used to connect the battery cells 110 and an external power source, and may be provided on the bus bar frame 310. At least a portion of the terminal member 330 may be exposed to the outside of the battery module 10 for connection to the external power source.
- the bus bar cover 340 may be provided as a pair.
- the pair of bus bar covers 340 may be provided to cover each of the bus bar frames 310.
- the bus bar cover 340 can block the outflow of ejections such as flame or gas out of the bus bar frame 310.
- the battery module 10 may include an end plate 400.
- the end plates 400 may be provided as a pair.
- the pair of end plates 400 cover the bus bar assembly 300 and may be provided at both ends of the battery module 10 in the longitudinal direction (X-axis direction).
- the pair of end plates 400 may be combined with the module case 200 to form the exterior of the battery module 10.
- the battery module 10 may include a heat transfer member 500.
- the heat transfer member 500 may be provided as a pair.
- the pair of heat transfer members 500 are disposed in contact with the upper and lower sides of the cell assembly 100 and may be in contact with the inner surface of the module case 200.
- the heat transfer member 500 disposed on the upper side of the cell assembly 100 is in contact with the inner surface of the case cover 230, and the heat transfer member 500 disposed on the lower side of the cell assembly 100 is connected to the case base. It can be contacted with the inner surface of (210).
- the pair of heat transfer members 500 can increase the cooling performance of the battery module 10 by transferring heat generated in the cell assembly 100 to the module case 200.
- FIG. 16 is a diagram for explaining the battery pack 1 according to an embodiment of the present invention
- FIG. 17 is a diagram for explaining a vehicle V according to an embodiment of the present invention.
- the battery pack 1 according to an embodiment of the present invention includes at least one or more battery modules 10 and the battery module 10 according to the previous embodiment. It may include a pack case 50 that accommodates it.
- the battery pack 1 may further include electrical components such as a BMS that controls the battery module 10 or a cooling unit such as a heat sink for cooling the battery module 10.
- electrical components such as a BMS that controls the battery module 10 or a cooling unit such as a heat sink for cooling the battery module 10.
- the battery pack 1 according to an embodiment of the present invention may further include various other components of the battery pack 1 known at the time of filing the present invention.
- the battery pack 1 according to an embodiment of the present invention may further include components such as a current sensor, a fuse, and a service plug.
- the vehicle V according to an embodiment of the present invention may include one or more battery packs 1 according to the present invention. Additionally, the vehicle V according to an embodiment of the present invention may further include various other components included in the vehicle in addition to the battery pack 1. For example, in addition to the battery pack 1 according to an embodiment of the present invention, the vehicle V according to an embodiment of the present invention further includes a vehicle body, a motor, and a control device such as an ECU (electronic control unit). It can be included.
- ECU electronic control unit
- the battery pack 1 may be installed in other devices, instruments, and facilities, such as an energy storage system using secondary batteries, in addition to the vehicle V.
- an energy storage system using secondary batteries in addition to the vehicle V.
- the battery pack 1 and the vehicle V include the battery module 10 of the previous embodiment, and the battery pack 1 and the vehicle ( Even in units of V), safety against the aforementioned thermal events can be ensured.
- a battery module 10 capable of improving safety against thermal events, a battery pack 1 including the same, and a vehicle V can be provided.
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
Description
Claims (15)
- 배터리 모듈에 있어서,상호 적층되는 복수 개의 배터리 셀들을 포함하는 셀 어셈블리;상기 셀 어셈블리를 수용하는 모듈 케이스; 및상기 모듈 케이스와 결합되며, 상기 복수 개의 배터리 셀들과 전기적으로 연결되는 버스바 어셈블리를 포함하며,상기 셀 어셈블리는,적어도 하나의 배터리 셀의 열적 이벤트 시 상기 복수 개의 배터리 셀들의 적층 방향에서 인접한 배터리 셀 측으로의 열 전파를 차단할 수 있게 상기 복수 개의 배터리 셀들의 일부분을 커버하도록 구성된 차단부재를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 차단부재는,상기 적어도 하나의 배터리 셀의 열적 이벤트 시 상기 적어도 하나의 배터리 셀에서 분출된 분출물을 특정 방향으로 유도 분출되게 가이드하는 것을 특징으로 하는 배터리 모듈.
- 제2항에 있어서,상기 모듈 케이스의 저부에는, 상기 분출물을 내보내기 위한 적어도 하나의 벤팅부가 구비되며,상기 차단부재는,상기 분출물을 상기 모듈 케이스의 상기 벤팅부 측으로 유도 분출할 수 있게 개방된 하부를 갖는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 셀 어셈블리는,상기 복수 개의 배터리 셀들의 적층 방향에서 상기 복수 개의 배터리 셀들 사이에 배치되는 써멀 배리어부재를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제4항에 있어서,상기 써멀 배리어부재는,상기 복수 개의 배터리 셀들의 적층 방향에서 상기 차단부재와 접촉되는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 차단부재의 양단부는,상기 버스바 어셈블리에 가까이 배치되는 것을 특징으로 하는 배터리 모듈.
- 제6항에 있어서,상기 버스바 어셈블리는,상기 복수 개의 배터리 셀들의 양측면을 커버하며,상기 차단부재의 양단부는,상기 버스바 어셈블리에 인접하게 배치되는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 차단부재는,플렉시블한 재질로 마련되는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 차단부재는,상기 복수 개의 배터리 셀들의 상단부 및 양측 테두리부를 커버하는 것을 특징으로 하는 배터리 모듈.
- 제9항에 있어서,상기 차단부재는,상기 복수 개의 배터리 셀들의 적층 방향에서 상기 복수 개의 배터리 셀들의 양측 테두리부의 전면부 및 후면부를 커버하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 복수 개의 배터리 셀들은, 각각,전극 조립체;상기 전극 조립체를 수용하는 케이스 바디와 상기 케이스 바디의 양측부로부터 단차지게 연장되는 케이스 테라스를 포함하는 전지 케이스; 및상기 전극 조립체와 연결되며, 상기 전지 케이스의 케이스 테라스로부터 돌출되어 상기 버스바 어셈블리와 연결되는 한 쌍의 전극 리드를 포함하며,상기 차단부재는,상기 케이스 바디의 상단부, 상기 케이스 테라스의 전면부 및 후면부를 커버하는 것을 특징으로 하는 배터리 모듈.
- 제11항에 있어서,상기 케이스 바디의 상단부에는,상기 케이스 테라스와 연결되며, 상기 케이스 바디 내부를 밀봉하기 위한 실링부가 형성되며,상기 차단부재는,상기 실링부를 커버하는 것을 특징으로 하는 배터리 모듈.
- 제11항에 있어서,상기 차단부재에는,상기 한 쌍의 전극 리드와의 간섭을 방지할 수 있게 상기 한 쌍의 전극 리드를 통과시키기 위한 가이드 슬릿이 형성되는 것을 특징으로 하는 배터리 모듈.
- 배터리 팩에 있어서,제1항 내지 제13항 중 어느 한 항에 따른 적어도 하나의 배터리 모듈; 및상기 적어도 하나의 배터리 모듈을 수용하는 팩 케이스를 포함하는 것을 특징으로 하는 배터리 팩.
- 자동차에 있어서,제14항에 따른 적어도 하나의 배터리 팩을 포함하는 것을 특징으로 하는 자동차.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380025314.4A CN118830130A (zh) | 2022-12-23 | 2023-07-21 | 电池模块、以及包括该电池模块的电池组和车辆 |
| US18/698,309 US20250233262A1 (en) | 2022-12-23 | 2023-07-21 | Battery module, and battery pack and vehicle comprising the same |
| EP23858420.5A EP4411960A4 (en) | 2022-12-23 | 2023-07-21 | BATTERY MODULE AND BATTERY PACK AND VEHICLE THEREWITH |
| JP2024525489A JP2025504737A (ja) | 2022-12-23 | 2023-07-21 | バッテリーモジュール、当該バッテリーモジュールを含むバッテリーパック及び自動車 |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20220183382 | 2022-12-23 | ||
| KR10-2022-0183382 | 2022-12-23 | ||
| KR10-2023-0043171 | 2023-03-31 | ||
| KR1020230043171A KR102933856B1 (ko) | 2022-12-23 | 2023-03-31 | 배터리 모듈, 이를 포함하는 배터리 팩 및 자동차 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024135973A1 true WO2024135973A1 (ko) | 2024-06-27 |
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ID=90366761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2023/010606 Ceased WO2024135973A1 (ko) | 2022-12-23 | 2023-07-21 | 배터리 모듈, 이를 포함하는 배터리 팩 및 자동차 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20250233262A1 (ko) |
| EP (1) | EP4411960A4 (ko) |
| JP (1) | JP2025504737A (ko) |
| WO (1) | WO2024135973A1 (ko) |
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| WO2026034893A1 (ko) * | 2024-08-05 | 2026-02-12 | 주식회사 엘지에너지솔루션 | 배터리 팩 |
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2023
- 2023-07-21 US US18/698,309 patent/US20250233262A1/en active Pending
- 2023-07-21 JP JP2024525489A patent/JP2025504737A/ja active Pending
- 2023-07-21 WO PCT/KR2023/010606 patent/WO2024135973A1/ko not_active Ceased
- 2023-07-21 EP EP23858420.5A patent/EP4411960A4/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109478700A (zh) * | 2016-07-13 | 2019-03-15 | Sk新技术株式会社 | 电池模块 |
| KR20210019158A (ko) * | 2019-08-12 | 2021-02-22 | 주식회사 한국아트라스비엑스 | 플러디드 배터리의 전해액 누출 방지를 위한 벤팅 구조 |
| KR20210133537A (ko) * | 2020-04-29 | 2021-11-08 | 주식회사 엘지에너지솔루션 | 전지팩 및 이를 포함하는 디바이스 |
| KR20220004558A (ko) * | 2020-07-03 | 2022-01-11 | 주식회사 엘지에너지솔루션 | 인접한 배터리 모듈 간의 열 확산 방지 구조를 갖는 배터리 팩, 그리고 이를 포함하는 ess 및 자동차 |
| KR20230043171A (ko) | 2020-07-29 | 2023-03-30 | 이턴 인텔리전트 파워 리미티드 | 인터로크 시스템을 포함하는 커넥터 시스템 |
| KR20220030545A (ko) * | 2020-09-03 | 2022-03-11 | 에스케이온 주식회사 | 배터리 모듈 |
Non-Patent Citations (1)
| Title |
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| See also references of EP4411960A4 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2026034893A1 (ko) * | 2024-08-05 | 2026-02-12 | 주식회사 엘지에너지솔루션 | 배터리 팩 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4411960A1 (en) | 2024-08-07 |
| US20250233262A1 (en) | 2025-07-17 |
| EP4411960A4 (en) | 2025-05-21 |
| JP2025504737A (ja) | 2025-02-19 |
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