WO2025009934A1 - 배터리 모듈 - Google Patents
배터리 모듈 Download PDFInfo
- Publication number
- WO2025009934A1 WO2025009934A1 PCT/KR2024/009598 KR2024009598W WO2025009934A1 WO 2025009934 A1 WO2025009934 A1 WO 2025009934A1 KR 2024009598 W KR2024009598 W KR 2024009598W WO 2025009934 A1 WO2025009934 A1 WO 2025009934A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rupture
- cover member
- battery
- battery module
- venting hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
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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
- 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, and more specifically, to a battery module with enhanced safety, a battery pack including the same, and an automobile.
- lithium secondary batteries are receiving attention due to their advantages such as the fact that they have almost no memory effect compared to nickel-based secondary batteries, are free to charge and discharge, have a very low self-discharge rate, and have high energy density.
- Lithium secondary batteries mainly use lithium oxide and carbon material as positive and negative active materials, respectively.
- Lithium secondary batteries have an electrode assembly in which positive and negative plates, each coated with the positive and negative active materials, are arranged with a separator between them, and an outer case, i.e. a battery case, that seals and stores the electrode assembly together with an electrolyte.
- lithium secondary batteries can be classified into can-type secondary batteries in which the electrode assembly is built into a metal can and pouch-type secondary batteries in which the electrode assembly is built into a pouch of an aluminum laminate sheet, depending on the shape of the outer packaging material.
- can-type secondary batteries can be classified into cylindrical batteries and square batteries, depending on their shape.
- secondary batteries, especially lithium secondary batteries can be said to be of three representative types: pouch-type, square-type, and cylindrical.
- Secondary batteries are widely used for powering or storing energy in not only small devices such as portable electronic devices, but also medium and large devices such as electric vehicles and energy storage systems (ESS). Furthermore, as the electric vehicle-related industry has grown significantly in recent years, interest in batteries, which can be considered a core technology, has grown even more.
- These secondary batteries can be housed together inside a module case while being electrically connected in large numbers to form a single battery module.
- a plurality of these battery modules can be connected to form a single battery pack.
- thermal propagation may occur in which the event is transmitted to an adjacent cell.
- thermal propagation phenomenon may also occur between the battery modules. If such thermal propagation occurs between cells and/or modules, problems such as flame exposure, rupture, or explosion may occur outside the battery pack due to high thermal energy.
- the present invention has been created to solve the above problems, and aims to provide a battery module having an improved structure so as to ensure safety from flames, gases, heat, sparks, etc. (hereinafter, “venting gases”) generated inside or outside the battery module, and a battery pack and automobile including the same.
- venting gases generated inside or outside the battery module, and a battery pack and automobile including the same.
- a battery module comprises: a cell assembly including a plurality of battery cells that are mutually stacked; a module case configured to accommodate the cell assembly in an internal space and having a venting hole formed therein; and an inner cover member configured to cover a side surface of the module case on the inside where the venting hole is formed, and having an inner rupture portion formed at a portion corresponding to the venting hole such that a venting gas emitted from the cell assembly side can be discharged through the inner rupture portion into the venting hole.
- venting hole is formed on the upper side of the module case, and the inner cover member can be positioned on the upper side of the cell assembly.
- the module case may have a U-frame in which a base plate, a left plate, and a right plate are integrally formed, and a top plate coupled to the top of the U-frame.
- the inner rupture portion may be configured in a notch shape.
- the inner rupture portion may be formed multiple times.
- At least some of the multiple inner ruptures may have different rupture conditions.
- the inner rupture part may be configured with different rupture conditions depending on the location in the part corresponding to the venting hole.
- the cell assembly includes a pouch-shaped cell as the battery cell, and the pouch-shaped cell has an adhesive member that maintains the folding structure of the sealing portion partially attached to the sealing portion, and at least a portion of a portion where the adhesive member is not attached can be positioned corresponding to the inner rupture portion.
- the inner cover member may have a protrusion protruding toward the cell assembly.
- the inner cover member may have the inner rupture portion positioned relatively in the outer direction.
- the inner cover member is formed in a shape in which a short end is bent, so that the bent end can be interposed between the cell assembly and the module case.
- the battery module according to the present invention may further include an outer cover member that covers a side surface on the outside of the module case where the venting hole is formed, and has an outer rupture portion provided in a portion corresponding to the venting hole.
- the outer rupture portion can be inserted into the venting hole.
- a battery pack according to another aspect of the present invention for achieving the above-mentioned purpose includes a battery module according to the present invention.
- a vehicle includes a battery module according to the present invention.
- the safety of a battery module or a battery pack, or a device including such a battery module or a battery pack, such as an electric vehicle or an ESS, can be improved.
- thermal runaway propagation between battery cells or between battery modules can be prevented or delayed.
- venting gas including heat, gas, flame, etc.
- the venting gas can be prevented from affecting adjacent cells or adjacent battery modules through convection, radiation, conduction, etc.
- the effect of blocking or suppressing thermal propagation between adjacent battery cells or between adjacent battery modules can be stably secured.
- a cover member in a situation where high-pressure venting gas is discharged from a battery cell due to thermal runaway, a cover member can be stably positioned between the battery cell and the module case. Accordingly, since the cover member protects the module case, the problem of the structure of the module case collapsing due to flame or heat can be prevented. Accordingly, thermal runaway propagation between the battery cell or the battery module due to such structural collapse can be more reliably prevented.
- the present invention may have various other effects, which will be described in each embodiment, or an explanation of effects that can be easily inferred by a person skilled in the art will be omitted.
- FIG. 1 is a schematic perspective view of a battery module according to one embodiment of the present invention.
- FIG. 2 is an exploded perspective view of a portion of a battery module according to one embodiment of the present invention.
- FIG. 3 is a perspective view showing a portion of a battery module according to one embodiment of the present invention.
- Figure 4 is an enlarged view of portion A1 of Figure 3.
- FIGS. 5 and 6 are perspective views schematically showing the configuration of an inner cover member according to different embodiments of the present invention.
- FIG. 7 is an exploded perspective view schematically showing the configuration of an inner cover member and a top plate according to another embodiment of the present invention.
- FIGS. 8 and 9 are enlarged perspective views showing a portion in which one venting hole is formed in a battery module according to different embodiments of the present invention.
- FIG. 10 is an enlarged perspective view of a portion in which one venting hole is formed in a battery module according to another embodiment of the present invention.
- Figure 11 is a drawing showing a cross-sectional configuration along line A3-A3' of Figure 10.
- Figures 12 and 13 are drawings sequentially showing a configuration in which the inner rupture part is deformed and ruptured by the pressure of the venting gas in the configuration of Figure 11.
- Figure 14 is an enlarged view of portion A6 of Figure 12.
- FIG. 15 is a perspective view schematically showing the configuration of a battery cell provided in a cell assembly according to one embodiment of the present invention.
- FIG. 16 is a perspective view of an inner cover member according to another embodiment of the present invention as viewed from the lower side.
- Figure 17 is a partially enlarged cross-sectional view showing the configuration of the inner cover member of Figure 16 mounted on the upper part of the cell assembly.
- FIG. 18 is an enlarged cross-sectional view showing a portion of a battery module according to another embodiment of the present invention.
- FIG. 19 is a cross-sectional view schematically showing a part of the configuration of a battery module according to another embodiment of the present invention.
- FIG. 20 is a perspective view schematically showing the configuration of a battery module according to another embodiment of the present invention.
- Figure 21 is an enlarged view of portion A12 of Figure 20.
- FIG. 22 is an exploded perspective view schematically showing the configuration of a battery module according to another embodiment of the present invention.
- Figure 23 is an enlarged drawing showing the cross-sectional configuration of a portion where a venting hole is formed in the combined state of the battery module of Figure 22.
- FIG. 24 is a drawing schematically showing a part of the configuration of a battery module according to another embodiment of the present invention.
- FIG. 25 is a drawing schematically showing a part of the configuration of a battery module according to another embodiment of the present invention.
- FIG. 26 is a partially enlarged view schematically illustrating a configuration in which an inner cover member and an outer cover member are deformed due to an increase in internal pressure in a battery module according to one embodiment of the present invention.
- Figure 27 is a perspective view schematically showing the configuration of a battery pack according to one embodiment of the present invention.
- FIG. 1 is a schematic perspective view of a battery module according to one embodiment of the present invention
- FIG. 2 is an exploded perspective view of a portion of a battery module according to one embodiment of the present invention.
- a battery module according to the present invention includes a cell assembly (100), a module case (200), and an inner cover member (300).
- the above cell assembly (100) may include one or more battery cells (110), particularly a plurality of battery cells (110).
- each battery cell (110) may mean one secondary battery itself, or may mean a battery group in which several secondary batteries are gathered. In this specification, the description is based on the assumption that the battery cell (110) represents one secondary battery.
- the battery cell (110), i.e., each secondary battery, may be equipped with an electrode assembly, an electrolyte, and a battery case.
- the shape of the battery case may be configured in various ways, and depending on the shape of the battery case, the battery cell (110) may be classified into a pouch-shaped cell, a cylindrical cell, a square cell, etc. Since the types, shapes, structures, etc. of the battery cell (110) were widely known at the time of filing of the present invention, a detailed description thereof will be omitted.
- the present invention may be applied to various types of secondary batteries known at the time of filing of the present invention.
- the battery cell (110) may be a lithium secondary battery, but of course, may be various other types of secondary batteries.
- a plurality of battery cells (110) may be configured in a form in which they are mutually stacked in at least one direction.
- a plurality of battery cells (110) may be stacked in a form in which they are arranged in a horizontal direction, particularly in a left-right direction (X-axis direction).
- a plurality of battery cells (110) provided in the cell assembly (100) may be electrically connected to each other in series and/or in parallel.
- the X-axis direction in which a plurality of battery cells (110) are stacked is referred to as the left-right direction
- the Y-axis direction which is a horizontal direction orthogonal to the cell stacking direction
- the Z-axis direction orthogonal to the X-Y plane is referred to as the up-down direction (vertical direction).
- the Y-axis direction may also be referred to as the length direction of the cell in the case of a pouch-shaped cell.
- the left-right direction, the front-back direction, and the up-down direction may also be expressed as the first direction, the second direction, and the third direction, respectively.
- Each battery cell (110) may be equipped with an electrode terminal (111).
- each pouch-shaped cell equipped in the cell assembly (100) may be equipped with an electrode terminal (111) that is arranged to protrude in the front-back direction.
- the electrode terminal (111) may be referred to as an electrode lead or an electrode tab, etc.
- a plurality of battery cells (110) may be electrically connected to each other in series or in parallel through the electrode terminals (111).
- the battery module may further include a bus bar (120), etc., to facilitate connection between the plurality of electrode terminals (111) or to sense an electrical signal from the electrode terminals (111).
- the above module case (200) may be configured to have an empty space formed inside and to accommodate a plurality of cell assemblies (100) in the internal space.
- the module case (200) may include members for covering the upper, lower, left, right, front, and rear directions centered on the internal space.
- the members for covering each direction may be configured in a plate shape.
- the cell assemblies (100) may be positioned in the internal space of the module case (200) limited in this way.
- the module case (200) may be at least partially configured of a metal and/or plastic material.
- a specific portion of the module case (200) may be configured of an aluminum material.
- another portion of the module case (200) may be configured of a plastic material.
- the above module case (200) may have a venting hole formed therein, as indicated by H1 in FIGS. 1 and 2.
- the venting hole (H1) may be formed on at least one side of the module case (200) and configured to penetrate the module case (200) in an inner and outer direction. Accordingly, the inner space and the outer space of the module case (200) may be communicated through the venting hole (H1).
- the venting hole (H1) may become an outlet through which the venting gas, such as a flame, gas, or spark, is discharged when the venting gas is generated from the cell assembly (100) inside the module case (200).
- the inner cover member (300) may be positioned inside the module case (200). That is, the inner cover member (300) may be accommodated in the internal space of the module case (200) together with the cell assembly (100). Furthermore, the inner cover member (300) may be configured to cover a side surface where the venting hole (H1) is formed. More specifically, the inner cover member (300) may be positioned in a portion where the venting hole (H1) is formed among several spaces between the cell assembly (100) and the module case (200). In other words, the inner cover member (300) may be placed inside the side surface where the venting hole (H1) is formed in the module case (200).
- the inner cover member (300) may be provided with a refractory material.
- the inner cover member (300) may be provided with a material such as mica, ceramic, or an inorganic material, or may be made of such a material.
- the inner cover member (300) may have an inner rupture part (301). Furthermore, the inner rupture part (301) may be provided at a portion corresponding to the venting hole (H1). Therefore, as illustrated in FIG. 1, the inner cover member (300) may be configured such that the inner rupture part (301) is positioned at a portion where the venting hole (H1) is formed when the inner cover member (300) is mounted inside the module case (200). In this case, when the surface of the module case (200) is viewed from the outside of the module case (200), the inner rupture part (301) may be exposed to the outside through the venting hole (H1). When the battery module is in a normal state, the inner rupture part (301) may be configured in a sealed form. Accordingly, even if the inner rupture part (301) is exposed through the venting hole (H1), the cell assembly (100) located inside the inner rupture part (301) may not be exposed to the outside through the venting hole (H1).
- the inner rupture portion (301) may be configured to be ruptured by pressure or heat.
- venting gas may be emitted when a thermal event such as thermal runaway occurs in one or more battery cells (110) provided in the cell assembly (100).
- venting gas may be a broad concept including not only gas emitted from a battery cell due to thermal runaway, but also gas, flame, spark, active material particles, etc. generated from combustion.
- the inner rupture portion (301) may be configured to be ruptured when such a thermal event occurs in the cell assembly (100).
- the inner rupture portion (301) may be configured to be at least partially ruptured by pressure or heat of venting gas emitted from the cell assembly (100).
- the venting gas emitted from the cell assembly (100) side can be discharged through the venting hole (H1) through the ruptured part of the inner rupture part (301).
- the inner cover member (300) closes the venting hole (H1) of the module case (200) in a normal state, but can rupture during thermal runaway to open the venting hole (H1). Therefore, the venting gas emitted from the cell assembly (100) side can be discharged to the outside of the module case (200) through the venting hole (H1).
- thermal propagation between battery modules can be suppressed by the inner cover member (300).
- inner cover members (300) made of a fire-resistant material, thereby suppressing damage to cell assemblies (100) inside other battery modules due to heat of the venting gas or the like.
- the inner cover member (300) closes the venting hole (H1) in a normal state, the cell assembly (100) may not be exposed to the outside through the venting hole (H1). Accordingly, foreign substances outside the battery module may be prevented from flowing into the cell assembly (100) through the venting hole (H1).
- the inner cover member (300) that protects the module case (200) from venting gas or heat is located inside the module case (200), the bonding force between the inner cover member (300) and the module case (200) can be stably secured.
- the inner cover member (300) is positioned on the inner side of the module case (200), so that the problem of the bonding force between the inner cover member (300) and the module case (200) being weakened by the outer side venting gas can be prevented. Accordingly, the inner cover member (300) can stably maintain its position without being detached from the module case (200) to the outside.
- the effect of preventing the inner cover member (300) from detaching can be secured.
- the venting gas is discharged outward through the venting hole (H1)
- the inner cover member (300) can be strongly pressurized outward by the venting gas.
- the inner cover member (300) since the module case (200) is positioned on the outside of the inner cover member (300), the inner cover member (300) can be continuously supported inward without detaching outward.
- the above venting hole (H1) may be formed on the upper side of the module case (200), as shown in FIGS. 1 and 2.
- the inner cover member (300) may be located on the upper side of the cell assembly (100).
- the module case (200) when the module case (200) is formed in a roughly rectangular shape, six side surfaces may be formed in the module case (200). At this time, the venting hole (H1) may be formed on the upper surface of the module case (200). In addition, the inner cover member (300) may be located on the upper surface and the lower surface of the upper surface of the cell assembly (100).
- the inner cover member (300) may be interposed between the cell assembly (100) and the module case (200) in the form of a sheet.
- the inner cover member (300) may be positioned on top of the cell assembly (100) in a horizontally laid down form. In this case, it may be said that the inner cover member (300) is arranged parallel to the plane (X-Y plane) on which the plurality of battery cells (110) are stacked.
- high-temperature venting gas can quickly move toward the venting hole (H1) at the top and be discharged to the outside. Therefore, the venting process of the battery module can be performed more smoothly during thermal runaway.
- the venting gas can be suppressed from moving toward the electrode terminal (111) or the module terminal. Therefore, the module bus bar, etc. provided on the module terminal side can be prevented from being damaged by the venting gas.
- module case (200) may have a U-frame (210) and a top plate (220), as shown in FIG. 2.
- the U-frame (210) may be configured in a form in which three unit sides provided in the module case (200) are integrated with each other.
- the U-frame (210) may be configured such that the base plate (211), the left plate (212), and the right plate (213) are integrally formed in the module case (200). That is, the base plate (211), the left plate (212), and the right plate (213) of the U-frame (210) may be manufactured in the form of one plate from the beginning, but may be distinguished from each other through an additional process such as bending.
- the U-frame (210) may be configured in a form in which the left and right ends of one plate laid down horizontally are vertically bent upward, respectively.
- the U-frame (210) may be open at the top, the front side, and the rear side.
- the top plate (220) can be coupled to the upper opening of the U-frame (210). Furthermore, the top plate (220) can be coupled at both left and right ends to the upper end of the left plate (212) and the upper end of the right plate (213) of the U-frame (210). In particular, in one embodiment of the present invention, a venting hole (H1) can be formed in the top plate (220). At this time, the inner cover member (300) can be positioned at the lower end of the top plate (220).
- the assemblability of the battery module can be improved.
- the assembly process of the battery module can be performed by first inserting the cell assembly (100) into the internal space of the U-frame (210) from the upper side of the U-frame (210), then mounting the inner cover member (300) on the upper side of the cell assembly (100), and then mounting the top plate (220) on the upper side of the inner cover member (300).
- the process of positioning the inner cover member (300) inside the module case (200) can be easily performed.
- the friction or tolerance between the inner surface of the module case (200) and the inner cover member (300) can be largely considered.
- the assembly configuration by closely contacting the inner cover member (300) and the top plate (220) to minimize the space therebetween, it can also be advantageous for reducing the volume of the battery module.
- the module case (200) may further include an end frame (230), as shown in FIG. 2.
- This end frame (230) may be coupled to the open ends of the front and rear sides of the U-frame (210), thereby closing the front and rear sides of the internal space of the module case (200).
- the end frame (230) may be positioned in the direction in which the electrode terminals (111) of each battery cell (110) included in the cell assembly (100) are positioned.
- the end frame (230) may include an electrically insulating material, such as a plastic material.
- Each component constituting the module case (200), such as the U-frame (210), the top plate (220), and the end frame (230), may be mutually connected in various ways, such as welding, insertion, adhesion, or hooking.
- all or part of the components of the module case (200) may be made of or include aluminum material in order to have excellent weldability, be advantageous in weight reduction, and stably secure cooling performance.
- FIG. 3 is a perspective view showing a part of a configuration of a battery module according to one embodiment of the present invention.
- FIG. 3 can be said to be a drawing of the embodiment of FIG. 1 with the top plate (220) removed.
- the inner cover member (300) may be configured to cover the upper portion of the cell assembly (100).
- the inner cover member (300) may be configured to cover the upper portions of all battery cells (110) included in the cell assembly (100).
- the inner cover member (300) may be configured to have a shape and size that entirely covers the upper portion of the internal space defined by the U-frame (210) and the end frame (230).
- the inner cover member (300) may have a rectangular shape corresponding to this shape.
- the inner cover member (300) may be configured to have a shape, size, area, etc. that is the same as or similar to that of the top plate (220).
- the cell assembly (100) or the top plate (220) can be more stably protected from external factors of the battery module as a whole.
- the venting gas does not affect the cell assembly (100) inside the battery module.
- thermal damage to the internal cell assembly (100) or thermal runaway propagation due to heat of the external venting gas, etc. can be more reliably suppressed.
- the cell assembly (100) inside the battery can be more reliably protected from foreign substances such as dust or conductors outside the battery module.
- the inner surface of the top plate (220) can be protected from venting gas or heat, etc. generated inside the module case (200).
- the inner rupture part (301) may be closed when the battery module is in a normal state. In this case, external venting gas or foreign substances may be prevented from flowing into the inside of the normal battery module through the venting hole (H1).
- the inner rupture part (301) may be configured to rupture so that the internal venting gas may be discharged to the outside. That is, the inner rupture part (301) may be transformed from a closed state to an open state by heat or venting gas. At this time, the inner rupture part (301) may be ruptured in various forms so as to be able to penetrate the inner cover member (300) in an inward and outward direction.
- the inner rupture portion (301) may be configured in a notch shape. This embodiment configuration will be described in more detail with additional reference to FIG. 4.
- Figure 4 is an enlarged view of portion A1 of Figure 3.
- an inner rupture portion (301) may be formed on at least one surface of the inner cover member (300).
- the inner rupture portion (301) may be formed in a notch shape that is concavely dug inwardly from the surface of the inner cover member (300), as indicated by N in FIG. 4.
- the notch-shaped inner rupture portion (301) may be provided in a shape that partially thins the thickness of the inner cover member (300).
- the notch (N) of the inner rupture portion (301) may be formed in a lattice shape. That is, a plurality of notch lines are formed in a long, concavely dug shape of the notch (N), and the inner rupture portion (301) may be configured in a shape in which these plurality of notch lines intersect each other.
- the inner rupture portion (301) may be configured in a shape in which one or more notch lines extending in the left-right direction and one or more notch lines extending in the front-back direction are orthogonal to each other.
- a configuration that allows the inner rupture portion (301) to rupture quickly in a situation such as thermal runaway can be more easily achieved.
- the venting hole (H1) in a normal state, the venting hole (H1) is stably covered by the inner rupture portion (301), but the inner rupture portion (301) can rupture quickly due to the pressure of the venting gas, etc.
- the inner cover member (300) when the internal pressure increases, deformation of the inner cover member (300) can occur more easily due to the notch (N). Therefore, rupture of the inner rupture portion (301) due to the increase in internal pressure can occur more easily.
- the process of providing a notch (N) can be performed more easily. Furthermore, according to the above-described embodiment, the process of providing a shape or size corresponding to a venting hole (H1) for the inner rupture portion (301) can be easily implemented.
- the notch (N) for forming the inner rupture portion (301) may be provided on the upper surface of the inner cover member (300).
- the inner rupture portion (301) may be formed in a concave shape in a downward direction on the upper surface of the inner cover member (300).
- the notch (N) is located on the side of the inner cover member (300) facing the venting hole (H1). Accordingly, the notch may be exposed to the outside of the module case (200) through the venting hole (H1).
- the inner rupture part (301) of the inner cover member (300) when a venting gas is emitted from the cell assembly (100) inside the module case (200), the inner rupture part (301) of the inner cover member (300) can be quickly ruptured by the internal pressure of the venting gas.
- the inner cover member (300) when the internal pressure increases due to the venting gas, the inner cover member (300) can be pressurized from the lower side to the upper side.
- the notch (N) is formed on the upper surface of the inner cover member (300), the damage of the inner rupture part (301) due to the pressurization can be quickly and smoothly performed.
- the inner cover member (300) can be pressurized from the upper side to the lower side.
- the notch (N) is not formed on the lower surface of the inner cover member (300), it may not be easily broken by such downward pressure. That is, according to the above-described implementation configuration, it can be said that the inner rupture portion (301) is configured to be easily broken by the inner (lower) pressure of the inner cover member (300) and not easily broken by the outer (upper) pressure.
- the inner rupture portions (301) may be formed in multiple ways in the inner cover member (300). For example, as shown in FIGS. 2 and 3, a plurality of inner rupture portions (301) spaced apart from each other in the horizontal direction may be provided on the surface of the sheet-shaped inner cover member (300). In addition, each inner rupture portion (301) may be formed of multiple notch lines.
- a plurality of venting holes (H1) may be formed.
- the inner rupture part (301) may be formed to correspond to each venting hole (H1).
- the inner rupture part (301) may be provided to correspond one-to-one with the venting hole (H1).
- venting gas can be quickly discharged to the outside through the adjacent inner rupture portion (301) and venting hole (H1).
- the inner cover member (300) may be configured so that at least one inner rupture portion (301) faces all battery cells (110) included in the cell assembly (100).
- the cell assembly (100) may include a plurality of battery cells (110) that are stacked in the left-right direction (X-axis direction).
- the venting holes (H1) may also be arranged in a plurality of directions in the stacking direction (left-right direction) of the battery cells (110). In this case, it can be said that the inner rupture portions (301) are directly arranged on the upper side of all battery cells (110).
- one inner rupture portion (301) may be arranged corresponding to one or more battery cells (110).
- the inner cover member (300) may be configured such that two or more inner rupture parts (301) are arranged correspondingly for one battery cell (110).
- each battery cell (110) may be arranged lengthwise in the front-back direction with the electrode terminal (111) positioned at the front-back direction (Y-axis direction) end.
- two or more inner rupture parts (301) may also be arranged in the front-back direction.
- the inner cover member (300) includes a plurality of inner rupture portions (301)
- at least some of the rupture portions may have different rupture conditions. This will be described in more detail with additional reference to FIGS. 5 and 6.
- FIG. 5 and FIG. 6 are perspective views schematically showing the configuration of an inner cover member (300) according to different embodiments of the present invention.
- rupture conditions for two or more inner rupture portions (301) may be configured differently. That is, when a plurality of inner rupture portions (301) are provided in a horizontal direction, at least some of them may rupture under different conditions.
- the rupture condition of the inner rupture part (301) can be set by considering a factor that can rupture the inner rupture part (301). For example, when the inner rupture part (301) ruptures due to pressure, the rupture condition can be set based on the magnitude of the pressure. That is, two or more inner rupture parts (301) can be configured to have different rupture pressure conditions. In this case, two or more inner rupture parts (301) can rupture at different pressure magnitudes.
- Different configuration of rupture conditions for two or more inner rupture portions (301) can be implemented in various ways.
- the rupture conditions between the inner rupture portions (301) can be configured differently by forming the intervals between the notch lines and/or the number of notch lines differently.
- the inner rupture portions (301) formed with a relatively narrow interval between the notch lines and a large number of notch lines can have a rupture pressure set lower than the other inner rupture portions (301).
- the notch depths for two or more inner rupture portions (301) may be configured differently. In this case, it can be said that the inner rupture portion (301) with the notch depth formed relatively deep has a lower rupture pressure size set compared to other inner rupture portions (301).
- the inner rupture portion (301) may be configured to have different rupture conditions by changing the width (horizontal length) of the notch.
- the inner rupture portion (301) formed with a relatively large notch width may have a lower rupture pressure size than other inner rupture portions (301).
- two or more inner rupture portions (301) may be configured to have different rupture conditions in the longitudinal direction of the battery cell (110) and/or the stacking direction of the battery cell (110).
- the inner cover member (300) illustrated in FIGS. 5 and 6 may be a modified example of the inner cover member (300) illustrated in FIGS. 2 and 3. Accordingly, even in the implementation drawings of FIGS. 5 and 6, the X-axis direction may be the stacking direction of the battery cell (110), and the Y-axis direction may be the longitudinal direction of the battery cell (110).
- a plurality of inner rupture parts (301), such as RY1, RY2, and RY3, may be spaced apart in the longitudinal direction of the battery cell (110) in the front-back direction (Y-axis direction).
- the inner rupture parts (301) arranged in the front-back direction may be configured to rupture under different conditions.
- the inner rupture part (301) indicated as RY1, the inner rupture part (301) indicated as RY2, and the inner rupture part (301) indicated as RY3 may have notches formed so that they rupture under different pressure conditions, respectively.
- the inner rupture part (301) may have a higher rupture condition set for the inner rupture part (301) located relatively toward the outer side in the longitudinal direction of the battery cell (110) than for the inner rupture part (301) located relatively toward the center.
- RY1 may be the inner rupture part (301) located relatively toward the outer side compared to RY2.
- the inner rupture part (301) indicated as RY1 may be configured to rupture under a higher pressure condition than the inner rupture part (301) indicated as RY2.
- the interval between the notch lines of RY1 may be formed wider than the interval between the notch lines of RY2.
- the number of the notch lines of RY1 may be formed less than the number of the notch lines of RY2.
- the rupture condition of RY2 can be formed higher than the rupture condition of RY3.
- the interval between the notch lines of RY2 can be wider than the interval between the notch lines of RY3.
- the number of notch lines of RY2 can be formed less than the number of notch lines of RY3.
- the inner rupture part (301) located at the center side in the longitudinal direction of the battery cell (110) may rupture relatively first. Therefore, in the initial stage of thermal runaway when the amount of venting gas discharged is not large, the venting gas is more likely to be discharged from the central portion rather than the longitudinal outer portion of the battery cell (110). Therefore, according to this embodiment of the present invention, the suppression effect on the propagation of thermal runaway between battery modules can be improved. That is, there is a high possibility that another battery module will be arranged adjacent to the longitudinal outer portion of the battery cell (110), and in the above embodiment, the venting gas can be first discharged from a location as far away as possible from the other battery module.
- a plurality of inner rupture parts (301) may be spaced apart in the left-right direction (X-axis direction) which is the stacking direction of the battery cells (110).
- the inner rupture parts (301) arranged in the left-right direction may be configured to rupture under different conditions.
- the inner rupture part (301) indicated by RX1 and the inner rupture part (301) indicated by RX2 may have notches formed so that they rupture under different pressure conditions, respectively.
- the inner rupture part (301) may be set to have a lower rupture condition for the inner rupture part (301) located relatively toward the center in the stacking direction of the battery cell (110) than for the inner rupture part (301) located relatively toward the outer side.
- RX2 may be the inner rupture part (301) located relatively toward the center compared to RX1.
- the central inner rupture part (301) indicated as RX2 may be configured to rupture under a lower pressure condition than the outer inner rupture part (301) indicated as RX1.
- the spacing between notch lines and the number of notch lines of RX2 may be formed narrower and more numerously than the spacing between notch lines and the number of notch lines of RX1.
- the inner rupture portion (301) located at the center in the stacking direction of the battery cells (110) may rupture relatively first. Accordingly, the problem of thermal runaway propagation to other battery modules arranged on the outside of the battery module in the stacking direction of the battery cells (110) can be more effectively suppressed.
- the inner rupture part (301) located relatively toward the outer side in the longitudinal direction or stacking direction of the battery cell (110) may have a lower rupture condition set than the inner rupture part (301) located relatively toward the center.
- the inner rupture part (301) located toward the outer side in the stacking direction of the battery cell (110) indicated by RX1 may have a lower rupture condition set than the other inner rupture part (301) indicated by RX2, such as by forming a narrower interval between notch lines, forming a deeper notch depth, or forming a wider notch width.
- the central portion of the module case (200), such as the central portion of the top plate (220) may swell the most.
- the inner cover member (300) located on the inner side of the top plate (220) also receives the highest pressure in the central portion, so that regardless of the location where the thermal runaway of the cell assembly (100) occurs, the inner rupture portion (301) located on the central side is likely to rupture first.
- the venting gas is not concentratedly discharged from a specific portion (central portion), but the venting gas can be discharged to the outside as quickly as possible from the location where thermal runaway occurs.
- the inner cover member (300) includes a plurality of inner rupture portions (301)
- at least some of the rupture portions may be configured to have different rupture sizes. This will be described in more detail with additional reference to FIG. 7.
- FIG. 7 is an exploded perspective view schematically showing the configuration of an inner cover member (300) and a top plate (220) according to another embodiment of the present invention.
- two or more inner rupture portions (301) may be configured to have different rupture sizes, i.e., sizes of portions opened in a ruptured state.
- two or more inner rupture portions (301) may be configured to have different sizes in a horizontal direction (X-axis or Y-axis direction).
- the inner rupture part (301) located relatively toward the center may be configured to have a larger rupture size than the inner rupture part (301) located relatively toward the outer side.
- a plurality of inner rupture parts (301) may be arranged in the front-back direction, that is, in the longitudinal direction of the battery cell (110).
- the inner rupture part (301) relatively closer to the center may be formed to have a larger size than the inner rupture part (301) relatively closer to the outer side.
- RY2' located relatively toward the center may be formed to have a larger notch area than RY1'.
- RY3' located relatively toward the center may be formed to have a larger notch area than RY2'. At this time, the notch area may be formed to be larger by increasing the length of the notch line or forming a larger number of notches.
- the amount of venting gas discharged can be formed differently in parts.
- the rupture size of the inner rupture part (301) located in the center is made large, the venting gas can be discharged more from the center than from the outer side of the top plate (220). Accordingly, the influence of the venting gas on other battery modules adjacent in the horizontal direction can be reduced.
- the venting holes (H1) can also be formed with different sizes.
- a plurality of venting holes (H1) can be formed in the top plate (220) arranged on the outer side (upper side) of the inner cover member (300) to correspond to each of the multiple inner rupture portions (301).
- each of the multiple venting holes (H1) can be configured with a different size to correspond to the rupture size of the corresponding inner rupture portion (301).
- the corresponding venting holes (H1) may be H1Y1', H1Y2', and H1Y3'.
- the rupture sizes of RY1', RY2', and RY3' have a relationship such as RY1' ⁇ RY2' ⁇ RY3'
- the hole sizes of H1Y1', H1Y2', and H1Y3' may be formed in a form having a relationship such as H1Y1' ⁇ H1Y2' ⁇ H1Y3'.
- the size of the venting hole (H1) formed on the central side is formed relatively large compared to the size of the venting hole (H1) formed on the outer side.
- the plurality of venting holes (H1) have different open areas corresponding to the rupture sizes of the corresponding inner rupture portions (301), the technical effect according to the difference in the rupture sizes of the inner rupture portions (301) can be stably guaranteed.
- the venting holes (H1) by preventing the venting holes (H1) from being formed unnecessarily large, it is possible to suppress venting gas or foreign substances from flowing in through the venting holes (H1) from the outside of the battery module.
- the above inner rupture part (301) may be configured with different rupture conditions depending on the location. This will be described in more detail with additional reference to FIGS. 8 and 9.
- FIGS. 8 and 9 are enlarged perspective views showing a portion in which one venting hole (H1) is formed in a battery module according to different embodiments of the present invention.
- FIGS. 8 and 9 may be enlarged embodiments of portion A2 of FIG. 1.
- one inner rupture part (301) may be provided at a position corresponding to one venting hole (H1).
- the inner rupture part (301) may be configured with different rupture conditions for each position in a portion corresponding to the venting hole (H1). That is, within one inner rupture part (301), the conditions for rupture may be designed partially differently.
- one inner rupture part (301) may have a plurality of notch lines arranged in the left and right directions as indicated by NY1, NY2, and NY3 at a portion exposed to the venting hole (H1). At this time, two or more notch lines may be configured to have different conditions for rupturing each other, such as rupture pressure conditions.
- the rupture condition can be set differently depending on the depth or width of the notch.
- at least two of the three notch lines NY1, NY2, and NY3 can be configured so that the depth of the notch is different.
- the inner rupture portion (301) may be configured such that the central portion of the venting hole (H1) has a relatively low rupture condition.
- NY2 may be a notch line positioned closer to the central portion than NY1 or NY3.
- the notch line depth or notch line width of NY2 may be formed to be deeper or larger than the notch line depth or notch line width of NY1 and NY3.
- the central portion of the venting hole (H1) in one inner rupture portion (301) can be more easily ruptured. Accordingly, since the ruptured portion of the inner rupture portion (301) is located at the central portion of the venting hole (H1), a wide and stable communication area between the inner rupture portion (301) and the venting hole (H1) can be secured. In this case, the venting gas can be discharged more smoothly through the inner rupture portion (301) and the venting hole (H1).
- one inner rupture portion (301) may have a plurality of notch lines arranged in the front-back direction as indicated by NX1, NX2, and NX3 at a portion exposed to the venting hole (H1). And, at least two or more of these plurality of notch lines (NX1, NX2, NX3) may be configured to have different rupture conditions.
- the inner rupture portion (301) may be configured such that the rupture condition is relatively lowered at the central side of the venting hole (H1).
- NX2 may be formed as a notch line located further toward the central side than NX1, and may have a deeper depth or wider notch line than NX1.
- NX3 may be formed as a notch line located further toward the central side than NX2, and may have a deeper depth or wider notch line than NX2.
- the venting hole (H1) is formed larger in the Y-axis direction than in the X-axis direction, so that the longitudinal direction of the venting hole (H1) can be referred to as the Y-axis direction.
- a greater number of notch lines can be formed along the longitudinal direction of the venting hole (H1). That is, as illustrated in FIG. 9, the number of notch lines exposed to the venting hole (H1) can be formed more in the Y-axis direction, which is the longitudinal direction of the venting hole (H1), than in the X-axis direction.
- a configuration in which rupture conditions are differentiated between a plurality of notch lines arranged along the longitudinal direction of the venting hole (H1) can be more easily and precisely implemented. Furthermore, in such an implementation configuration, a sufficient gap can be secured between a notch line located at the center side of the venting hole (H1) and a notch line located at the outer side of the venting hole (H1). Therefore, for one inner rupture portion (301), a configuration in which a portion corresponding to the center side of the venting hole (H1) is ruptured better can be more easily implemented. Therefore, the ruptured portion of the inner rupture portion (301) and the venting hole (H1) can be better communicated.
- FIG. 10 is an enlarged perspective view of a portion in which one venting hole (H1) is formed in a battery module according to another embodiment of the present invention.
- FIG. 10 may be considered another modified example of FIG. 8 or FIG. 9.
- FIG. 11 is a drawing showing a cross-sectional configuration along line A3-A3' of FIG. 10.
- the inner cover member (300) and the top plate (220) are shown spaced apart from each other in the vertical direction (Z-axis direction), but this is only for convenience of illustration, and they may be in close contact with each other.
- the inner rupture portion (301) may have an outer peripheral notch line, as indicated by NC.
- the outer peripheral notch line (NC) may be configured in a ring shape corresponding to the outer peripheral shape of the venting hole (H1).
- the outer peripheral notch line (NC) may be formed in an oval ring shape along the edge of the venting hole (H1).
- the inner cover member (300) is positioned below the top plate (220)
- the outer peripheral notch line (NC) of the inner rupture portion (301) may be positioned directly below or slightly inside the edge of the venting hole (H1).
- the outer peripheral notch line (NC) may be positioned inside the venting hole (H1) in the horizontal direction (Y-axis direction).
- the outer peripheral notch line (NC) of the inner rupture portion (301) can be formed to a size slightly smaller than the venting hole (H1).
- Figures 12 and 13 are drawings sequentially showing a configuration in which the inner rupture part (301) is deformed and ruptured by the pressure of the venting gas in the configuration of Figure 11.
- the venting gas may pressurize the inner cover member (300).
- the inner cover member (300) may be deformed in a form in which the inner rupture portion (301) swells upward through the venting hole (H1).
- the outer peripheral notch line (NC) of the inner rupture portion (301) is located directly below the venting hole (H1) or further horizontally inside the edge of the venting hole (H1), so that the horizontal inner portion of the outer peripheral notch line (NC) can be entirely exposed upward through the venting hole (H1).
- two outer peripheral notch lines (NC) are illustrated, and it can be seen that the two outer peripheral notch lines (NC) are located horizontally further inward than the venting hole (H1).
- the outer circumferential notch line (NC) may be ruptured.
- the inner ruptured portion (301) located on the inner side of the two outer circumferential notch lines (NC) may be separated from the inner cover member (300) and may be separated and detached to the outside through the venting hole (H1), as indicated by arrow A5. Accordingly, due to the rupture of the inner ruptured portion (301), the space between the two outer circumferential notch lines (NC) may be opened and communicated with the venting hole (H1).
- the inner rupture portion (301) formed between the two outer notch lines (NC) is easily discharged to the outside of the venting hole (H1), so that a communication configuration between the ruptured portion of the inner rupture portion (301) and the venting hole (H1) can be quickly and smoothly achieved.
- the inner rupture part (301) is depicted as being completely separated from the inner cover member (300), but the inner rupture part (301) may also be implemented as being only partially separated from the inner cover member (300).
- the inner rupture portion (301) may have a straight notch line that is elongated in one direction, as indicated by NX and NY in FIGS. 10 and 11, together with the outer notch line (NC).
- the straight notch line may extend in the left-right direction (X-axis direction) as indicated by NX, or may extend in the front-back direction (Y-axis direction) as indicated by NY.
- the straight notch line may include two or more kinds of notch lines that extend in different directions in a form that intersects each other.
- at least a part of the straight notch lines (NX, NY) may be located inside the outer notch line (NC).
- a plurality of straight notch lines (NX) may be located between two outer notch lines (NC) in the horizontal direction.
- the rupture configuration of the inner rupture portion (301) can be achieved more smoothly.
- the straight notch line (NX) can cause the deformation of the inner rupture portion (301) to occur more easily.
- the straight notch line (NX) can be formed on the upper surface of the inner cover member (300).
- the inner rupture portion (301) can be bent more easily in the upward direction. Accordingly, the magnitude or acting speed of the force applied to the two outer notch lines (NC) portions, such as the tensile force, can be increased. Therefore, the outer notch line (NC) portion can be ruptured more quickly, so that the rupture operation of the inner rupture portion (301) and the resulting discharge configuration of the venting gas can be more smoothly achieved.
- the outer notch line (NC) and the notch lines (NX, NY) arranged inside thereof may be formed with notching directions opposite to each other.
- the outer notch line (NC) may be formed on the inner surface of the inner cover member (300) facing the cell assembly (100), and the straight notch line (NX, NY) may be formed on the outer surface of the inner cover member (300) facing the module case (200).
- the straight notch line (NX, NY) may be formed in a concave groove shape in a downward direction on the upper surface of the inner cover member (300), and the outer notch line (NC) may be formed in a concave groove shape in an upward direction on the lower surface of the inner cover member (300).
- the outer peripheral notch line (NC) formed on the lower surface of the inner cover member (300) is indicated in the form of a dotted line, but the outer peripheral notch line (NC) may be formed in the form of a ring that is continuously extended like an ellipse.
- the outer peripheral notch line (NC) may be formed discontinuously, although the overall shape is formed in the form of a ring.
- the outer peripheral notch line (NC) may be formed in a form that penetrates the inner cover member (300).
- Figure 14 is an enlarged view of portion A6 of Figure 12.
- the outer peripheral notch line (NC) may be a point where deformation begins in the inner cover member (300) adjacent to the edge of the venting hole (H1). At this time, the outer peripheral notch line (NC) may receive a force that bends approximately counterclockwise, as indicated by arrow A7.
- the straight notch line (NX) located at the portion of the inner cover member (300) that bends upward may receive a force that bends approximately clockwise, as indicated by arrow A8. That is, in one inner rupture portion (301), the outer peripheral notch line (NC) and the straight notch line (NX) may each receive a force that bends in different directions, that is, in opposite rotational directions.
- the outer circumferential notch line (NC) and the straight notch line (NX) can be formed on opposite surfaces.
- the outer circumferential notch line (NC) and the straight notch line (NX) can be formed on the inner surface and the outer surface of the inner cover member (300), respectively, considering the rotational direction of the tensile force partially applied when the venting gas is pressurized.
- the rupture of the inner rupture part (301) can be made more quickly.
- the rupture shape of the inner rupture part (301) can be more easily controlled.
- the rupture condition of the outer circumferential notch line (NC) can be set lower than that of the straight notch line (NX, NY).
- the inner rupture portion (301) when the pressure of the venting gas is applied toward the inner rupture portion (301), if the magnitude of the pressure is greater than a certain level, the inner rupture portion (301) may be configured so that the outer notch line (NC) ruptures before the straight notch line (NX, NY).
- the outer notch line (NC) may be configured to have a deeper notch depth or a wider notch width than the straight notch line (NX, NY).
- the inner rupture portion (301) can be completely separated from the inner cover member (300) along the outer notch line (NC). Therefore, the rupture shape of the inner rupture portion (301) can be neat, and a wider rupture area can be secured.
- the outer notch line (NC) matches the size and shape of the venting hole (H1)
- the communication area between the outer notch line (NC) and the venting hole (H1) can be maximized. Therefore, it can be more advantageous in increasing the discharge performance of the venting gas passing through the inner rupture portion (301).
- the above cell assembly (100) may include a pouch-shaped cell as a battery cell (110), as shown in FIG. 2. This will be described in more detail with reference to FIG. 15.
- FIG. 15 is a perspective view schematically showing the configuration of a battery cell (110) provided in a cell assembly (100) according to one embodiment of the present invention.
- the pouch-type cell may be a pouch-type battery, and the battery case may be formed of a pouch outer shell.
- the pouch-type battery may include a storage portion (R) and a sealing portion (S).
- the storage portion (R) is a portion that stores an electrode assembly and an electrolyte, etc. inside.
- the sealing portion (S) may be provided on the edge of the storage portion (R) and may be a portion where the pouch outer shell is fused.
- the storage portion (R) of the pouch-type battery may be formed in an approximately rectangular shape, and a battery in which the sealing portion (S) is formed on four sides (corners) of the storage portion (R) is referred to as a four-sided sealing cell, and a battery in which the sealing portion (S) is formed on three sides (corners) of the storage portion (R) is referred to as a three-sided sealing cell.
- a three-sided sealing cell is illustrated in FIG. 14, the present invention is not limited to a specific form of the pouch-type battery.
- At least a part of the sealing portion (S) of such a pouch-shaped cell may be folded in terms of securing space, improving sealing performance, etc.
- the upper sealing portion (S) where the electrode terminal (111) is not located in the pouch-shaped cell may be folded toward the receiving portion (R).
- an adhesive member may be attached to the pouch-shaped cell, as indicated by B, so that the folding structure of the sealing portion (S) may be maintained.
- such an adhesive member (B) may be configured in the form of a tape.
- the adhesive member (B) may be partially attached to the sealing portion (S).
- the adhesive members (B) may be attached in multiple forms spaced apart from each other in the longitudinal direction of the battery cell (110) on one sealing portion.
- a plurality of adhesive members (B) may be attached to the upper sealing portion of the pouch-shaped cell so as to be spaced apart from each other in the Y-axis direction, which is the longitudinal direction of the pouch-shaped cell.
- the unattached portion (A9) may be positioned below the inner rupture portion (301) in the vertical direction (Z-axis direction).
- the inner cover member (300) may be provided with a plurality of inner rupture portions (301), and all of the inner rupture portions (301) may at least partially overlap with the unbonded portion (A9) of the battery cell (110).
- the venting gas when venting gas is emitted from the battery cell (110), the venting gas can move in the vertical direction (Z-axis direction) toward the inner rupture portion (301).
- the venting gas is likely to be emitted first from the unbonded portion (A9).
- the inner rupture portion (301) can be positioned in the ejection direction of the unbonded portion (A9), the pressurizing force of the venting gas to the inner rupture portion (301) can be applied as high as possible. Therefore, the rupture of the inner rupture portion (301) can occur more quickly.
- the venting gas after the inner rupture portion (301) ruptures, the venting gas can be emitted in a straight direction as much as possible through the inner rupture portion (301) and the venting hole (H1), so that the venting gas can be discharged more smoothly.
- the inner cover member (300) may have a protrusion, such as a portion indicated by P.
- the protrusion (P) may have a shape that protrudes in an inward direction toward the cell assembly (100).
- the protrusion (P) may be configured to protrude downward from the lower surface of the inner cover member (300).
- the protrusion (P) may be formed in a shape that extends long in one direction, particularly in the horizontal direction, as illustrated in Fig. 16. At this time, the longitudinal direction of the protrusion (P) may be the same as the longitudinal direction of the battery cell (110). For example, when the battery cell (110) is formed long in the front-back direction (Y-axis direction), the protrusion (P) may also be formed to extend long in the front-back direction.
- the inner rupture portion (301) may be located between a plurality of protrusions (P) arranged in a horizontal direction.
- a plurality of notches (N) constituting the inner rupture portion (301) may be formed between two protrusions arranged spaced apart in the X-axis direction.
- the protrusions (P) may be configured in a form that divides the space between cells or cell groups in the space between the cell assembly (100) and the lower surface of the inner cover member (300). That is, the protrusions (P) may function as a partition that separates the outer space between the battery cells (110).
- an inner rupture portion (301) corresponding to each battery cell (110) or cell group separated by the protrusions (P) may be provided on the inner cover member (300).
- the cell assembly (100) may further include a barrier (120), as illustrated in FIG. 17.
- This barrier (120) may be directly interposed between adjacent battery cells (110) (or cell groups).
- the barrier (120) may be formed in a roughly erected plate shape and may be stacked together with the battery cells (110) to be included in the cell assembly (100).
- the barrier (120) may be a thermal barrier that blocks heat or flames, etc.
- This thermal barrier may be provided with a material having insulation performance or fire resistance performance, etc., and may play a role in blocking heat or flames, etc. between adjacent battery cells (110).
- the thermal barrier may include a material such as mica or silicon.
- the barrier (120) may be a cooling member, such as a cooling fin, interposed between cells to perform cooling. At this time, a cooling path may be formed in the internal space of the barrier (120). Alternatively, a portion or end of the barrier (120) may be configured to be in direct contact with the refrigerant or thermally coupled to another cooling configuration through which the refrigerant flows.
- the protrusion (P) may be configured to be located on the outside of the barrier (120).
- a barrier (120) may be placed between each cell group consisting of two battery cells (110). And, the protrusion (P) may be located on the upper side of the barrier (120).
- the upper space can also be separated by the protrusion (P) for the battery cells (110) (cell group) separated by the barrier (120). Therefore, the thermal runaway propagation between the adjacent battery cells (110) separated by the barrier (120) can be effectively suppressed. Furthermore, when the barrier (120) is a thermal barrier or a cooling member, the adjacent cells can be thermally separated more reliably by the barrier (120) and the protrusion (P).
- the protrusion (P) can be in direct contact with the barrier (120).
- the lower end of the protrusion (P) can be configured to be in contact with the upper end of the barrier (120).
- the space separated by the protrusion (P) and the barrier (120) can be physically separated more reliably. Accordingly, the movement of venting gas or heat between the battery cells (110) is effectively prevented, so that the heat transmission prevention effect between adjacent battery cells (110) can be further improved.
- Fig. 18 is an enlarged cross-sectional view showing a portion of a battery module according to another embodiment of the present invention.
- Fig. 18 can be considered another modified example of portion A11 of Fig. 17.
- FIG. 19 is a cross-sectional view schematically showing a part of the configuration of a battery module according to another embodiment of the present invention.
- the inner cover member (300) may be configured such that the inner rupture portion (301) is positioned relatively further outward than other portions. More specifically, in the embodiment of FIG. 19, the inner cover member (300) may be mounted on the lower portion of the top plate (220). At this time, the inner cover member (300) may be configured such that the inner rupture portion (301) protrudes relatively upwardly than other portions. In particular, such a protruding configuration may be implemented in the interior of a normal battery module in which venting gas, etc., is not generated.
- the inner cover member (300) and the top plate (220) are configured in a form that is in close contact with each other, and the inner rupture part (301) can be arranged to correspond to the venting hole (H1). Therefore, when the inner rupture part (301) is configured to protrude outwardly, the inner rupture part (301) can be inserted into the venting hole (H1). In particular, when the degree of protrusion of the inner rupture part (301) is designed to be above a certain level, the inner rupture part (301) can also protrude outward more than the venting hole (H1).
- the inner cover member (300) may have an inclined portion at or toward the inner rupture portion (301).
- the inner cover member (300) may have an inclined surface that gradually moves away in the outward direction (+Z-axis direction) as it moves toward the inner rupture portion (301).
- the assembly position of the inner cover member (300) is guided, so that the assembly between the inner cover member (300) and the top plate (220) can be improved.
- the bonding between the inner cover member (300) and the top plate (220) can be improved.
- Fig. 20 is a perspective view schematically showing the configuration of a battery module according to another embodiment of the present invention.
- the top plate (220) is shown in a form separated from other components.
- Fig. 21 is an enlarged view of part A12 of Fig. 20.
- the inner cover member (300) may be configured in a form in which an end is bent, as indicated by C.
- the inner cover member (300) may have a left end and a right end bent downward.
- this end-bending configuration that is, the bent portion (C) of the inner cover member (300) may be interposed between the cell assembly (100) and the module case (200).
- the right end of the inner cover member (300) may be bent downward to provide a right-side bent portion (C).
- this right-side bent portion (C) may be interposed between the outermost right side of the cell assembly (100), for example, the rightmost battery cell (110), and the right plate of the U-frame (210).
- a folded portion (C) may also be formed on the left side of the inner cover member (300), and this left folded portion (C) may be interposed between the left outermost part of the cell assembly (100) and the left plate of the U-frame (210).
- the inner cover member (300) can be positioned more stably in the internal space of the module case (200). In particular, even when a pressure is applied by a venting gas or external vibration or impact occurs, the end of the inner cover member (300) is sandwiched between the cell assembly (100) and the module case (200), so that positional displacement or shape deformation may not easily occur.
- the leakage of venting gas through the space between the outermost portion of the cell assembly (100) and the module case (200) can be reduced.
- the venting gas flowing into the upper space of the outermost battery cell (110) on the right can be blocked from moving in the right direction toward the module case (200) due to the right folded portion (C). Therefore, in the case of this embodiment, the effect of suppressing gas leakage between the module case (200) (e.g., the side plate of the U-frame (210)) and the cell assembly (100) can be further improved.
- the cell assembly (100) may further include an insulating pad (130) at the outermost edge of the stacking direction of the battery cell (110), as shown in FIGS. 20 and 21.
- the insulating pad (130) may be interposed between the cell assembly (100) and the module case (200) by including a material having electrical insulation properties, such as a polymer.
- the insulating pad (130) may be configured to absorb swelling when swelling of the battery cell (110) included in the cell assembly (100) occurs by including a material having elasticity.
- the folded portion (C) of the inner cover member (300) may be positioned above the insulation pad (130) in the space between the outermost battery cell (110) of the cell assembly (100) and the side plate of the U-frame (210). That is, when the insulation pad (130) is provided at the outermost portion of the cell assembly (100), an empty space corresponding to the thickness of the insulation pad (130) may be formed between the outermost battery cell (110) and the module case (200). At this time, the folded portion (C) of the inner cover member (300) may be inserted into this empty space.
- the end of the folded portion (C) of the inner cover member (300) may be in contact with the end of the insulating pad (130).
- the lower end of the folded portion (C) may be in contact with the upper end of the insulating pad (130). In this case, it is possible to more effectively prevent the venting gas from leaking toward the folded portion (C) of the inner cover member (300).
- Fig. 22 is an exploded perspective view schematically showing the configuration of a battery module according to another embodiment of the present invention.
- Fig. 23 is an enlarged view showing the cross-sectional configuration of a portion where a venting hole (H1) is formed in the combined state of the battery module of Fig. 22.
- Fig. 23 can be said to show the cross-sectional configuration along line A13-A13' in the combined state of the battery module of Fig. 22.
- the battery module according to the present invention may further include an outer cover member (400).
- the outer cover member (400) may be formed on the outer side of the module case (200).
- the outer cover member (400) may be configured to cover a side of the module case (200) where the venting hole (H1) is formed from the outer side.
- the outer cover member (400) may be configured to be positioned on the upper side of the top plate (220) where the venting hole (H1) is formed, and to cover the upper side of the top plate (220).
- the outer cover member (400) may be formed with an outer rupture portion (401).
- This outer rupture portion (401) may be formed in a shape and configuration identical to or similar to that of the inner rupture portion (301) of the inner cover member (300).
- the outer rupture portion (401) may be formed in a notch shape on the surface of the outer cover member (400).
- the outer rupture portion (401) may be formed in a concave shape on the outer surface of the outer cover member (400), for example, from the upper surface to the lower surface, as indicated by N in FIG. 23.
- various implementation configurations described above with respect to the inner rupture portion (301) may be applied identically or similarly.
- the configuration of the inner rupture part (301) described in the embodiments of FIGS. 3 to 14 may be applied identically or similarly.
- the material of the outer cover member (400) may also be the same as or similar to that of the inner cover member (300).
- the outer cover member (400) may be provided with a material such as mica, ceramic, or an inorganic material, or may be made of such a material.
- the outer rupture part (401) may be formed in a portion corresponding to the venting hole (H1).
- the outer rupture part (401) may be formed on the upper side of the portion where the venting hole (H1) is formed.
- the inner rupture part (301) may be formed on the lower side of the portion where the venting hole (H1) is formed. Accordingly, it may be said that the outer rupture part (401) of the outer cover member (400) and the inner rupture part (301) of the inner cover member (300) are arranged to face each other with the venting hole (H1) interposed therebetween.
- the outer cover member (400) when venting gas flows into the venting hole (H1), the outer cover member (400) can be configured so that the introduced venting gas can be discharged to the outside of the module case (200). That is, the outer cover member (400) blocks the venting hole (H1) in a normal state, but when the venting gas flows into the venting hole (H1) and the pressure increases, the outer rupture part (401) can rupture to open the venting hole (H1) to the outside.
- the inner cover member (300) and the outer cover member (400) may be positioned on both sides with the module case (200) having the venting hole (H1) formed therebetween.
- the inner rupture part (301) of the inner cover member (300) may rupture first, and then the outer rupture part (401) of the outer cover member (400) may rupture.
- the module case (200) can be more effectively protected from venting gas discharged from another venting hole (H1) or another battery module.
- the venting gas may have a very high temperature and may include flames, sparks, high-temperature particles, etc.
- the module case (200) may melt or be damaged due to the external high temperature, or that the cell assembly (100) inside may be thermally damaged or have thermal runaway propagation.
- the portion of the module case (200) where the venting hole (H1) is formed may have weak structural rigidity, and may be reversely inflowed through the venting hole (H1) to damage the inner rupture portion (301).
- the inner cover member (300) can still exist inside the top plate (220). Therefore, the cell assembly inside the top plate (220) can be effectively protected from external venting gas or the like.
- the inner cover member (300) and the outer cover member (400) can be in close contact with the module case (200).
- the outer cover member (400) can be laminated on the upper side and the inner cover member (300) can be laminated on the lower side with the top plate (220) interposed therebetween.
- the venting hole (H1) formed in the top plate (220) can be closed (sealed) on the outside (upper side) by the outside cover member (400) and closed (sealed) on the inside (lower side) by the inside cover member (300).
- air can be received in this venting hole (H1).
- an air insulating layer is formed in the venting hole (H1).
- heat transfer between the inside and the outside of the battery module can be reduced. Therefore, the effect of suppressing thermal runaway propagation between the battery modules can be further improved.
- high-temperature particles may accumulate on the upper surface of the outer cover member (400) of the top plate (220).
- the phenomenon of heat of the external high-temperature particles being transferred to the inside of the top plate (220) can be suppressed due to the air insulation layer formed in the venting hole (H1) of the top plate (220).
- the portion between the top plate (220) and the outer cover member (400), and the portion between the top plate (220) and the inner cover member (300) can be mutually adhered.
- the air accommodated in the venting hole (H1) can be retained only in the venting hole (H1).
- the outer rupture part (401) and the inner rupture part (301) can be stably supported at the venting hole (H1) portion due to the air layer. Therefore, deformation or damage caused by the outer rupture part (401) or the inner rupture part (301) not being properly supported due to gravity, vibration, external impact, etc., such as deformation in the form of gradual bending toward the venting hole (H1), can be reduced.
- the outer rupture part (401) when the inner rupture part (301) is deformed toward the venting hole (H1) in a situation where the venting gas is generated and the internal pressure of the module case (200) increases, the outer rupture part (401) can also be deformed by being pushed outward due to the pressure of the air layer. Therefore, the outer rupture part (401) can be deformed more quickly in a thermal runaway situation. Therefore, the venting performance of the battery module can be further improved.
- Fig. 24 is a drawing schematically showing a part of the configuration of a battery module according to another embodiment of the present invention.
- Fig. 24 may be a modified example of the embodiment of Fig. 23.
- the outer rupture portion (401) can be inserted at least partially into the venting hole (H1). That is, when the battery module is in a normal state, the outer cover member (400) is attached to the outside of the module case (200), and the portion where the outer rupture portion (401) is formed can be inserted into the venting hole (H1). In this case, it can be said that the outer rupture portion (401) is positioned toward the inside of the battery module more than other portions of the outer cover member (400).
- the outer cover member (400) is attached to the upper surface of the top plate (220), and the outer rupture portion (401) is formed to be concave in the downward direction, and can be inserted entirely toward the venting hole (H1). In this case, it can be said that the outer rupture portion (401) is positioned lower than other portions of the outer cover member (400).
- Fig. 25 is a drawing schematically showing a part of the configuration of a battery module according to another embodiment of the present invention.
- Fig. 25 may be another modified example of the embodiment of Fig. 23.
- the outer rupture portion (401) has a shape that is concave inwardly, but unlike the embodiment of Fig. 24, the inner rupture portion (301) may also have a shape that is concave in the downward direction. That is, in a normal battery module state where thermal runaway does not occur, the inner rupture portion (301) may be formed to be concave in the downward direction in a shape that is approximately parallel to the outer rupture portion (401).
- the gap between the inner rupture part (301) and the outer rupture part (401) can be widened. Accordingly, by ensuring that a certain level or higher of air insulation layer is secured between the inner rupture part (301) and the outer rupture part (401), the insulation effect can be secured more sufficiently in the venting hole (H1).
- the inner rupture portion (301) and the outer rupture portion (401) can be inverted from a concave shape to a convex shape when the internal pressure increases. This will be described in more detail with reference to Fig. 26.
- FIG. 26 is a partially enlarged view schematically illustrating a configuration in which an inner cover member (300) and an outer cover member (400) are deformed due to an increase in internal pressure in a battery module according to one embodiment of the present invention.
- FIG. 26 can be said to illustrate a form in which the inner cover member (300) and the outer cover member (400) are deformed due to venting gas in the exemplary configuration of FIG. 25.
- the inner rupture portion (301) of the inner cover member (300) may be reversely deformed from a downwardly curved shape as shown in FIG. 25 to an upwardly curved shape as shown in FIG. 26.
- the inner rupture part (301) can be ruptured more quickly due to this reverse deformation.
- the notch opens more when the inner rupture part (301) is reversed, so that the rupture speed of the inner rupture part (301) can be further improved.
- pressure as indicated by the dotted line in Fig. 26 may be applied to the outer rupture portion (401) by the venting gas or the inner rupture portion (301). And, due to this pressure application, the outer rupture portion (401) may also be reversely deformed from a downwardly curved shape as illustrated in Fig. 25 to an upwardly curved shape as illustrated in Fig. 26. And, due to this reversed deformation, the outer rupture portion (401) may be ruptured more quickly by opening a notch or the like.
- the rupture speed of the outer rupture portion (401) and the inner rupture portion (301) can be further improved. Accordingly, the venting performance of the battery module can be further improved.
- Figure 27 is a perspective view schematically showing the configuration of a battery pack according to one embodiment of the present invention.
- the battery pack according to the present invention may include one or more battery modules according to the present invention described above, as indicated by M.
- the battery pack according to the present invention may further include various other components in addition to the battery module (M) according to the present invention.
- the battery pack according to the present invention may further include components of the battery pack known at the time of filing of the present invention, such as a BMS (Battery Management System), a bus bar, a relay, a current sensor, etc.
- BMS Battery Management System
- the battery pack according to the present invention may further include a pack case, as indicated by PC in FIG. 27.
- the pack case (PC) may provide a space in which a battery module (M) according to the present invention may be stored.
- the pack case (PC) may have a space partitioned by a cross beam or the like for dividing and storing the plurality of battery modules.
- a venting device as indicated by VD, may be provided on at least one side of the pack case (PC) of the battery pack according to the present invention.
- the venting device (VD) may serve to discharge venting gas discharged from the venting hole (H1) of each battery module from the inside of the pack case (PC) to the outside.
- the venting device (VD) may always be maintained in an open state, or may be configured to be switched from a closed state to an open state in a specific situation, such as when the internal pressure increases.
- a battery pack according to the present invention may include a battery module according to the present invention, but may not include a separate pack case, and may be configured such that the module case (200) of the battery module functions as a pack case (PC).
- components of the battery pack such as a BMS, a bus bar, and a relay, may be included inside the module case (200).
- a battery pack of this type is also called a cell-to-pack (CTP) in that the battery cells (110) are directly stored in the pack case (PC).
- CTP cell-to-pack
- a venting hole (H1) is formed in a case member, which is a pack case (PC) and a module case (200), and an inner cover member (300) may be positioned on the inside of this case member.
- an outer cover member (400) may be positioned on the outside of this pack case.
- the battery module or battery pack according to the present invention can be applied to automobiles such as electric automobiles or hybrid automobiles. That is, the automobile according to the present invention can include the battery module according to the present invention or the battery pack according to the present invention. In addition, the automobile according to the present invention can further include various other components included in the automobile in addition to the battery module or battery pack. For example, the automobile according to the present invention can further include a body, a motor, a control device such as an ECU (electronic control unit), etc. in addition to the battery module according to the present invention.
- ECU electronic control unit
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims (15)
- 상호 적층된 다수의 배터리 셀을 구비하는 셀 어셈블리;내부 공간에 상기 셀 어셈블리를 수납하도록 구성되며, 벤팅 홀이 형성된 모듈 케이스; 및상기 모듈 케이스의 내측에서 상기 벤팅 홀이 형성된 측면을 커버하며, 상기 벤팅 홀에 대응되는 부분에 내측 파열부가 구비되어 상기 셀 어셈블리 측에서 분출되는 벤팅 가스가 상기 내측 파열부를 통해 상기 벤팅 홀로 배출 가능하도록 구성된 내측 커버 부재를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 벤팅 홀은 모듈 케이스의 상부 측에 형성되며,상기 내측 커버 부재는 상기 셀 어셈블리의 상부에 위치하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 모듈 케이스는, 베이스 플레이트, 좌측 플레이트 및 우측 플레이트가 일체로 형성된 U-프레임 및 상기 U-프레임의 상단에 결합되는 탑 플레이트를 구비하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 내측 파열부는 노치 형태로 구성된 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 내측 파열부는 복수 형성된 것을 특징으로 하는 배터리 모듈.
- 제5항에 있어서,복수의 내측 파열부 중 적어도 일부는, 파열 조건이 다르게 구성된 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 내측 파열부는, 상기 벤팅 홀에 대응되는 부분에서, 위치 별로 파열 조건이 다르게 구성된 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 셀 어셈블리는, 상기 배터리 셀로서 파우치형 셀을 포함하며,상기 파우치형 셀은 실링부의 폴딩 구조를 유지하는 접착 부재가 실링부에 부분적으로 부착되되, 상기 접착 부재가 부착되지 않은 부분의 적어도 일부가 상기 내측 파열부에 대응하여 위치하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 내측 커버 부재는, 상기 셀 어셈블리를 향해 돌출된 돌출부를 구비하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 내측 커버 부재는, 상기 내측 파열부가 상대적으로 외측 방향에 위치하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 내측 커버 부재는 단부가 절곡된 형태로 형성되어, 절곡부가 상기 셀 어셈블리와 상기 모듈 케이스 사이에 개재된 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 모듈 케이스의 외측에서 상기 벤팅 홀이 형성된 측면을 커버하며, 상기 벤팅 홀에 대응되는 부분에 외측 파열부가 구비된 외측 커버 부재를 더 포함하는 것을 특징으로 하는 배터리 모듈.
- 제12항에 있어서,상기 외측 파열부는, 상기 벤팅 홀에 삽입된 것을 특징으로 하는 배터리 모듈.
- 제1항 내지 제13항 중 어느 한 항에 따른 배터리 모듈을 포함하는 배터리 팩.
- 제1항 내지 제13항 중 어느 한 항에 따른 배터리 모듈을 포함하는 자동차.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2025546733A JP2026506021A (ja) | 2023-07-06 | 2024-07-05 | バッテリーモジュール |
| CN202480004103.7A CN120035905A (zh) | 2023-07-06 | 2024-07-05 | 电池模块 |
| EP24836381.4A EP4576379A4 (en) | 2023-07-06 | 2024-07-05 | BATTERY MODULE |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20230087933 | 2023-07-06 | ||
| KR10-2023-0087933 | 2023-07-06 | ||
| KR1020240066698A KR20250007973A (ko) | 2023-07-06 | 2024-05-22 | 배터리 모듈 |
| KR10-2024-0066698 | 2024-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2025009934A1 true WO2025009934A1 (ko) | 2025-01-09 |
Family
ID=94171993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2024/009598 Pending WO2025009934A1 (ko) | 2023-07-06 | 2024-07-05 | 배터리 모듈 |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4576379A4 (ko) |
| JP (1) | JP2026506021A (ko) |
| CN (1) | CN120035905A (ko) |
| WO (1) | WO2025009934A1 (ko) |
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| KR102776122B1 (ko) * | 2021-06-21 | 2025-03-04 | 주식회사 엘지에너지솔루션 | 가스 배출 경로를 개선한 배터리 팩 |
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- 2024-07-05 CN CN202480004103.7A patent/CN120035905A/zh active Pending
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| KR20230087933A (ko) | 2021-12-10 | 2023-06-19 | 대한민국(농촌진흥청장) | 다면체 블록을 이용한 인지능력 향상 교구 |
| KR20240066698A (ko) | 2022-11-08 | 2024-05-16 | (주)토마토시스템 | 능동적 소셜 이벤트의 ai 감지를 통한, 대학의 기술자산의 수익화 지원을 위한 선택적 기업 매치 메이킹 시스템 |
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| EP4576379A4 (en) | 2026-03-11 |
| EP4576379A1 (en) | 2025-06-25 |
| JP2026506021A (ja) | 2026-02-20 |
| CN120035905A (zh) | 2025-05-23 |
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