WO2024076019A1 - 가스 벤팅패스를 구비한 배터리 팩 - Google Patents
가스 벤팅패스를 구비한 배터리 팩 Download PDFInfo
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- WO2024076019A1 WO2024076019A1 PCT/KR2023/013599 KR2023013599W WO2024076019A1 WO 2024076019 A1 WO2024076019 A1 WO 2024076019A1 KR 2023013599 W KR2023013599 W KR 2023013599W WO 2024076019 A1 WO2024076019 A1 WO 2024076019A1
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- WIPO (PCT)
- Prior art keywords
- pack
- gas
- venting
- battery
- battery pack
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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
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
- H01M50/367—Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
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- 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
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/271—Lids or covers for the racks or secondary casings
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
- H01M50/358—External gas exhaust passages located on the battery cover or case
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/394—Gas-pervious parts or elements
-
- 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 pack, and more specifically, to a gas that prevents the gas emitted from the battery module from spreading to other battery modules when a thermal event occurs in the battery module and can be smoothly discharged to the outside of the pack case. This is about a battery pack with venting pass applied.
- Secondary batteries are attracting attention as a new energy source for improving eco-friendliness and energy efficiency, not only because they have the primary advantage of being able to dramatically reduce the use of fossil fuels, but also because they do not generate any by-products from energy use.
- Lithium secondary batteries which have been widely used recently, have an operating voltage of approximately 2.5V to 4.5V. Therefore, in the case of electric vehicles or power storage devices that require large capacity and high output, a battery module in which multiple lithium secondary batteries are connected in series and/or parallel, and a battery pack in which the battery modules are connected in series and/or parallel are constructed. Use as an energy source.
- the number of lithium secondary batteries contained in one battery module may increase or the number of battery modules contained in one battery pack may increase.
- venting gas may be generated from the lithium secondary batteries, and if deterioration worsens, the electrode active material and aluminum along with the venting gas may be discharged. High-temperature particles (or sparks), including particles, may be ejected. At this time, the venting gas and particles cause thermal damage to adjacent battery modules, which greatly increases the risk of additional events occurring in other battery modules.
- the present invention was created to solve the above technical problems.
- gas or particles emitted from the battery module are prevented from spreading to other adjacent battery modules, and in particular, it prevents the gas from spreading to the pack case.
- the purpose is to provide a battery pack that can be smoothly discharged to the outside.
- a battery pack according to the present invention includes a plurality of battery modules and a pack case for accommodating the plurality of battery modules, wherein the pack case has an internal space for accommodating the battery modules and has an open top.
- a pack tray provided in a shaped form; And it may include a pack cover that covers an upper part of the pack tray, is coupled to the pack tray, and has a built-in gas venting path that communicates with each of the battery modules.
- the gas venting path includes at least one first venting path extending in a first direction; and at least one second venting path extending in a second direction intersecting the first direction and communicating with the at least one first venting path.
- the first venting path is plural, and includes two outer paths located on both edge areas facing each other on the pack cover and extending in the first direction, and at least two outer paths located between the two outer paths and extending in the first direction. It includes one inner path, and the at least one second venting path may be configured to intersect the two outer paths and the inner path.
- the gas venting path may further include a mesh filter at a portion where the first venting path and the second venting path intersect.
- the mesh filter may have mesh holes of a smaller size as the mesh filter approaches the outlet of the gas venting pass.
- Each of the battery modules may be provided with a gas venting hole on its upper surface, and the pack cover may be provided with a connection pipe connecting the gas venting hole and the gas venting path.
- the gas venting hole may be covered with a packing member that is designed to rupture above a certain pressure.
- the pack cover includes a tray connection portion provided to protrude to the outside of the pack cover at one end of the first venting path, and the pack tray includes a gas outlet through which gas is discharged to the outside.
- a connection groove portion provided to be fitable with the tray connection portion; And it may include a duct part provided inside the body of the pack tray so that the connection groove part communicates with the gas outlet.
- the pack tray has at least one first partition wall dividing an internal space
- the pack cover has a second partition wall fitted with the first partition wall, so that the battery modules adjacent to each other are connected to the first partition wall. It may be configured to be spatially blocked by the second partition wall.
- the first partition may have an upper groove recessed from the upper surface to a predetermined depth
- the second partition may have an insertion part that can be inserted into the upper groove
- the insertion portion may have a concave portion provided in a concave inward shape, and the upper groove portion may have a pressing portion provided to fit the shape of the concave portion when the insertion portion is inserted therein.
- the gas venting path may include a plurality of unit gas venting paths in one-to-one communication with the plurality of battery modules.
- a vehicle including the above-described battery pack can be provided.
- a thermal event occurs in a battery module
- gas or particles emitted from the battery module are prevented from spreading to other adjacent battery modules, and a battery is capable of smoothly discharging the gas to the outside of the pack case.
- Packs may be provided.
- the battery pack according to one aspect of the present invention has a gas venting path provided in the pack cover that covers the top of the battery modules, and the gas venting path is divided into several branches. Therefore, even if particles accumulate in a certain gas movement path and block the flow of gas in that gas movement path, the gas can escape through another gas movement path.
- a mesh filter is applied to each area where the gas venting passes intersect, and a mesh filter with a smaller hole size is applied closer to the outlet side of the gas venting pass, thereby preventing particles from easily escaping to the outside of the battery pack.
- FIG. 1 is a combined perspective view of a battery pack according to an embodiment of the present invention.
- FIG. 2 is a perspective view schematically showing the configuration of a battery pack with the pack tray and pack cover of FIG. 1 separated.
- FIG. 3 is a schematic cross-sectional view of the battery pack taken along line A-A' in FIG. 1.
- FIG. 4 is a diagram schematically showing a longitudinal cross-section of the battery pack of FIG. 1.
- Figure 5 is an enlarged view of area B of Figure 4.
- FIG. 6 is a diagram showing a modified example of the first and second partitions of FIG. 5.
- Figure 7 is a diagram schematically showing a cross-section of a battery pack according to another embodiment of the present invention.
- Figure 8 is a partial enlarged view of the gas venting path of Figure 7.
- Figure 1 is a combined perspective view of a battery pack according to an embodiment of the present invention
- Figure 2 is a perspective view schematically showing the configuration of the battery pack with the pack tray and pack cover of Figure 1 separated
- Figure 3 is a perspective view of the battery pack of Figure 1. It is a diagram schematically showing a cross-sectional view of the battery pack taken along A-A'
- FIG. 4 is a diagram schematically showing a longitudinal cross-sectional view of the battery pack of FIG. 1.
- the battery pack 10 includes a plurality of battery modules 100 and a pack case, and the pack case 200 includes each battery module ( It is provided with a gas venting pass (221, 222) that communicates with 100).
- the gas venting paths 221 and 222 refer to passages for discharging venting gas out of the pack case 200 when a thermal event occurs in a battery module 100 included in the battery pack 10.
- the battery pack 10 prevents other battery modules 100 from receiving as much thermal damage as possible during the process of discharging venting gas out of the pack case 200, and also prevents high-temperature particles (electrode plates ejected from the battery cells) from being damaged as much as possible.
- Gas venting paths 221 and 222 are configured to prevent high-temperature particles from acting as an ignition source outside the battery pack 10 by preventing pieces (pieces or pieces of active material, etc.) from easily escaping to the outside of the battery pack 10. It can be.
- the configuration of the pack case 200 equipped with the gas venting paths 221 and 222 will be described in detail.
- the pack case 200 includes a pack tray 210 and a pack cover 220 that can be coupled to each other. As shown in FIGS. 1 and 2, the pack tray 210 has an internal space capable of accommodating a plurality of battery modules 100 and may be provided with an open top.
- the pack tray 210 may include a base portion 211 that supports lower portions of the battery modules 100 and a wall portion that forms a wall along the outer perimeter of the base portion 211.
- the base portion 211 is provided in a substantially square plate shape, and the wall portion may include first to fourth walls forming a wall along the outer perimeter of the square plate-shaped base portion 211.
- the wall portion includes a first wall 212 in the +X direction, a second wall 213 in the -Y direction, a third wall 214 in the -X direction, and a fourth wall in the +Y direction. It may include (215).
- the pack cover 220 covers the top of the pack tray 210 and can be provided to be coupled to the pack tray 210.
- the pack cover 220 has gas venting paths 221 and 222 therein.
- the gas venting paths 221 and 222 may be provided as embedded in a frame forming the pack cover 220, as shown in FIG. 3.
- the space where the battery modules 100 are arranged and the space through which the venting gas moves can be separated inside the pack case 200.
- venting gas discharge paths can be diversified and the volume of the area through which the gas can move or the entire passage can be increased. Therefore, the gas venting pass of the present invention can be effective in smoothly discharging venting gas to the outside of the battery pack even if a large amount of venting gas is generated.
- venting gas generated from any battery module 100 is configured to move along the gas venting path built into the pack cover 220, so it does not flow into the space where the battery modules 100 are arranged. Therefore, since the venting gas does not directly contact other battery modules 100, the other battery modules 100 may not receive significant thermal damage.
- the battery module 100 may include battery cells 110 and a module housing for accommodating the battery cells 110 .
- the battery cell 110 can be applied to any type of secondary battery, such as a prismatic secondary battery, a cylindrical secondary battery, or a pouch-type secondary battery, and the module housing can protect the battery cells 110 from external shock and vibration. It is a material with high mechanical rigidity, and can preferably be made of a metal material.
- Each battery module 100 may be placed on a pack tray 210 and may be provided with a gas venting hole 121 on its upper surface, as shown in FIG. 2 . Additionally, each battery module 100 may be configured such that the gas venting hole 121 is individually connected to the gas venting path of the pack cover 220.
- the top surface of the battery module 100 refers to the top plate of the module housing that covers the top of the battery cells 110, and the gas venting hole 121 may be formed by partially cutting or drilling the top plate of the module housing. there is. For example, when there is an ignition issue due to a short circuit or overcharge of the battery cell 110, flame, high temperature particles, and venting gas may be generated in the battery cell 110. At this time, the venting gas may be discharged from the inside of the battery module 100 to the outside through the gas venting hole 121.
- a packing member 122 may be attached to the gas venting hole 121. The packing member 122 normally seals the gas venting hole 121 to prevent foreign substances from outside from entering the battery module 100 housing.
- the packing member 122 is a material that can rupture or melt by heat above a certain pressure and may be made of, for example, a plastic material. That is, when there is an issue of internal ignition of the battery module 100, the gas venting hole 121 is opened when the packing member 122 made of plastic is lost due to gas pressure or heat.
- the gas venting hole 121 may be configured to communicate with the gas venting path of the pack cover 220.
- the pack cover 220 may further include a connection pipe 225 connecting the gas venting hole 121 and the gas venting path.
- the connection tube 225 may be configured to have flexibility and elasticity, for example, in the form of a bellows.
- connection tubes 225 When coupled to the pack tray 210, the connection tube 225 connects to the corresponding battery module 100. It can be configured to match the gas venting hole 121 in the vertical direction.
- the connection pipe 225 has one end communicating with the gas venting path and its other end protruding from the surface of the pack cover 220 to cover the gas venting hole 121 of the battery module 100. You can.
- the gas venting path of the pack cover 220 includes at least one first venting path 221 extending in a first direction (X direction) and the first direction It extends in a second direction (Y direction) intersecting and includes at least one second venting path 222 communicating with the at least one first venting path 221.
- the first venting path 221 is plural, and is located in both edge areas facing the pack cover 220 and extends in the first direction, including two outer paths 221a and 221b and the two outer paths (221a, 221b). It may include at least one inner path 221c located between 221a and 221b and extending in the first direction.
- the second venting path 222 extends in a second direction (Y direction) intersecting the two outer paths 221a and 221b and the inner path 221c and may be configured to communicate with each other at the intersection portion. .
- the pack cover 220 of this embodiment has three second venting paths 222a, 222b, and 222c at intervals corresponding to the width of the battery module 100 along the first direction (X direction), but according to the present invention The scope of rights is not limited to this. That is, the pack cover 220 may be configured so that, for example, two or four or more second venting paths 222 are built into the pack cover 220.
- the paths through which the venting gas can move toward the gas outlet 219 of the battery pack 10 can be more diverse. That is, the venting gas moves along not only the two outer paths 221a and 221b on both edges of the pack cover 220, but also a plurality of second venting paths 222 that intersect the two outer paths 221a and 221b. You can. For example, if a lot of particles accumulate in a specific part of the gas venting path, the flow of venting gas may be obstructed. However, according to the gas venting path configuration according to this embodiment, the paths through which the venting gas can move are varied, so the area clogged with particles You can avoid it and move through another route.
- the large capacity battery pack 10 includes a large number of battery modules 100.
- venting gas and particles are simultaneously generated from one or more battery modules 100 included in the large-capacity battery pack 10, in order to smoothly and quickly discharge the venting gas, as in the present embodiment,
- a gas venting path that configures various gas movement paths by utilizing the large area of the pack cover 220 can be effective.
- the gas venting path may further include a mesh filter 223 at a portion where the first venting path 221 and the second venting path 222 intersect.
- the mesh filter 223 serves to block the movement of particles and prevent the particles from being discharged to the outside of the battery pack 10.
- the mesh filters 223a, 223b, and 223c according to this embodiment can be applied to the gas venting path, with mesh holes having smaller sizes as they are closer to the outlet of the gas venting path, that is, the gas outlet 219. According to this, when venting gas and particles move together as indicated by the arrow in FIG.
- the particles can be filtered more than n times (n is a natural number).
- the mesh hole sizes of the mesh filters 223a, 223b, and 223c are configured to be sequentially smaller, so that the amount of particles accumulated in the gas venting path between one mesh filter 223 and the other mesh filter 223 can be effectively distributed by size.
- heat exchange occurs with the metal mesh filter, lowering the temperature, and ultimately, only low-temperature, ultra-fine particles can be discharged to the outside of the battery pack 10. there is.
- the pack cover 220 is provided with a tray connection portion 226 provided to protrude to the outside of the pack cover 220 at one end of the first venting path 221.
- the pack tray 210 has a gas outlet 219 through which gas is discharged to the outside, a connection groove 217 provided to be fitable with the tray connection part 226, and the connection groove 217 and the gas outlet. (219) may include a duct portion 218 provided inside the body of the pack tray 210 to communicate with it.
- connection groove 217 may be provided in the central area of the 212
- a tray connection portion 226 may be provided on the surface of the pack cover 220 so that it can be fitted and released into the connection groove 217 in the vertical direction. It may be configured to protrude downward.
- the tray connection unit 226 may be configured to correspond to the number of first venting paths 221 and communicate with the first venting path 221.
- tray connection parts 226 may be provided at one end of two outer paths 221a and 221b and one end of one inner path 221c, respectively.
- the pack cover 220 may be configured with two or three or more inner paths 221c, and one end of each inner path 221c A tray connection portion 226 may be provided for each unit.
- the tray connection portion 226 of the pack cover 220 and the connecting groove portion 217 of the pack tray 210 are connected to each other, as shown in FIG. 4, when the pack cover 220 and the pack tray 210 are coupled to each other. It can be forcibly inserted and connected. And, as shown by the hidden line in FIG. 3, the connection groove portion 217 of the pack tray 210 has a gas outlet ( 219) can be configured to communicate with. With this configuration, the gas venting path of the pack cover 220 communicates with the gas outlet 219 of the pack tray 210, and the venting gas is finally discharged to the outside of the battery pack 10 through the gas outlet 219. It can be done as much as possible.
- the battery pack 10 may be configured to partition the internal space of the pack case 200 to block heat transfer between the battery modules 100 when a thermal event occurs.
- the pack tray 210 is provided with at least one first partition wall 216 that partitions the internal space
- the pack cover 220 has a second partition wall 224 fitted with the first partition wall 216.
- neighboring battery modules 100 are spatially spaced by the first partition 216 and the second partition 224. It can be configured to be blocked.
- the first partition wall 216 of the pack tray 210 has an upper groove portion 216a recessed from the upper surface to a predetermined depth
- the second partition wall 216 of the pack cover 220 The partition wall 224 may include an insertion portion 224a that can be inserted into the upper groove portion 216a. Therefore, when the pack cover 220 and the pack tray 210 are coupled to each other, the first partition 216 and the second partition 224 are connected, so that the internal space of the pack case 200 can be divided into several parts. .
- the first partition 216 and the second partition 224 are fitted in a space between the side part 120A of the module case of one battery module 100 and the side part 120B of the other battery module 100. It can be blocked by . Therefore, when a thermal event occurs in one of the battery modules 100, heat transfer to the other adjacent battery module 100 can be delayed as much as possible.
- Figure 6 shows a modified example of the first partition 216 and the second partition 224 of Figure 5, in which the fastening force of the first partition 216 and the second partition 224 is reinforced.
- the insertion portion 224a of the second partition 224 according to the embodiment of FIG. 6 has a concave part 224b provided in a concave inward shape, and the upper groove portion 216a of the first partition 216 is It is provided with a pressing portion (216b) whose shape matches the concave portion (224b).
- the concave part 224b and the pressing part 216b can be combined. Since the concave part 224b is not easily removed from the pressing part 216b unless the pressing part 216b is opened to create space, this structure is used to form the first partition 216 and the second partition 224. ) can be advantageous in strengthening the fastening force between the two.
- FIG. 7 is a diagram schematically showing a cross-section of the battery pack 10 according to another embodiment of the present invention
- FIG. 8 is a partial enlarged view of the gas venting path of FIG. 7.
- the gas venting path according to another embodiment of the present invention may include a plurality of unit gas venting paths 228a to 228d in one-to-one communication with the plurality of battery modules 100.
- a gas venting path is built into the pack cover 220, and the gas venting path is configured to communicate with each battery module 100. It's like that.
- the gas movement path corresponding to the inner path 221c and the second venting path 222 of the first venting path 221 of the above-described embodiment is omitted.
- the above-described embodiment has a structure in which the outer paths 221a and 221b of the first venting path 221 communicate with a plurality of battery modules 100, but the gas venting path according to another embodiment of the present invention is shown in Figure 7 As shown in FIGS. 8 to 8, one battery module 100 is configured to individually communicate with one of the unit gas venting passes 228a to 228d.
- the venting gas generated from each battery module 100 moves along each unit gas venting path 228a to 228d and enters the battery through the gas outlet 219. It may be discharged to the outside of the pack (10).
- the venting gas generated from one battery module 100 moves along the unit gas venting paths 228a to 228d connected to the one battery module 100, and thus flows into the inside of another battery module 100.
- the possibility of inflow is extremely low.
- the particles ejected from different battery modules 100 are generated through different unit gas venting paths 228a to 228d.
- the venting gas of each battery module 100 moves along each unit gas venting path 228a to 228d, so the flow is smooth, and the moving distance of the venting gas to the gas outlet 219 can be shortened compared to the above-described embodiment. Therefore, the venting gas can be discharged to the outside of the battery pack 10 more quickly.
- the battery pack according to the present invention can be applied to automobiles such as electric vehicles or hybrid vehicles. That is, the vehicle according to the present invention may include the battery pack according to the present invention.
- the battery pack may be installed, for example, in a car body frame under a vehicle seat or in a trunk space.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims (13)
- 복수 개의 배터리 모듈과, 상기 복수 개의 배터리 모듈을 수용하는 팩 케이스;를 포함하는 배터리 팩에 있어서,상기 팩 케이스는,상기 배터리 모듈들을 수용할 수 있는 내부 공간을 구비하고 상부가 개방된 형태로 마련되는 팩 트레이; 및상기 팩 트레이의 상부를 커버하며 상기 팩 트레이와 결합하고, 각 상기 배터리 모듈과 연통하는 가스 벤팅패스를 내장한 팩 커버를 포함하는 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 가스 벤팅패스는,제1 방향으로 연장되는 적어도 하나의 제1 벤팅패스; 및 상기 제1 방향과 교차하는 제2 방향으로 연장되고 상기 적어도 하나의 제1 벤팅패스와 연통하는 적어도 하나의 제2 벤팅패스를 포함하는 것을 특징으로 하는 배터리 팩.
- 제2항에 있어서,상기 제1 벤팅패스는 복수 개로서,상기 팩 커버에서 마주하는 양쪽 가장자리 영역에 위치하고 상기 제1 방향으로 연장되는 2개의 아웃터 패스와, 상기 2개의 아웃터 패스 사이에 위치하고 상기 제1 방향으로 연장되는 적어도 하나의 이너 패스를 포함하고,상기 적어도 하나의 제2 벤팅패스는 상기 2개의 아웃터 패스와 상기 이너 패스와 교차하는 것을 특징으로 하는 배터리 팩.
- 제2항에 있어서,상기 가스 벤팅패스는,상기 제1 벤팅패스와 상기 제2 벤팅패스가 교차하는 부분에 메쉬 필터를 더 포함하는 것을 특징으로 하는 배터리 팩.
- 제4항에 있어서,상기 메쉬 필터는 복수 개이고,상기 가스 벤팅패스의 출구에 가까울 수록 메쉬 구멍의 사이즈가 작게 형성된 것을 특징으로 하는 배터리 팩.
- 제2항에 있어서,각 상기 배터리 모듈은 상면에 가스 벤팅홀을 구비하고,상기 팩 커버는, 상기 가스 벤팅홀과 상기 가스 벤팅패스를 연결하는 커넥션 관을 구비하는 것을 특징으로 하는 배터리 팩.
- 제6항에 있어서,상기 가스 벤팅홀은 일정 압력 이상에서 파열되게 마련된 패킹부재로 커버된 것을 특징으로 하는 배터리 팩.
- 제2항에 있어서,상기 팩 커버는,상기 제1 벤팅패스의 일단부에서 상기 팩 커버의 외측으로 돌출되게 마련된 트레이 접속부를 구비하고,상기 팩 트레이는,가스가 외부로 배출되는 가스 배출구;상기 트레이 접속부와 끼움 결합 가능하게 마련되는 연결홈부; 및상기 연결홈부와 상기 가스 배출구가 연통하도록 상기 팩 트레이의 몸체 내부에 구비되는 덕트부를 포함하는 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 팩 트레이는 내부 공간을 구획하는 적어도 하나의 제1 격벽을 구비하고,상기 팩 커버는 상기 제1 격벽과 끼움 결합되는 제2 격벽을 구비하여,서로 이웃하는 상기 배터리 모듈들이 상기 제1 격벽과 상기 제2 격벽에 의해 공간적으로 차단되게 구성된 것을 특징으로 하는 배터리 팩.
- 제9항에 있어서,상기 제1 격벽은 상단 표면으로부터 소정 깊이 함몰 형성된 상단홈부를 구비하고, 상기 제2 격벽은 상기 상단홈부에 삽입 가능하게 마련된 삽입부를 구비하는 것을 특징으로 하는 배터리 팩.
- 제10항에 있어서,상기 삽입부는 오목하게 내측으로 들어간 형태로 마련된 오목부를 구비하고,상기 상단홈부는 그 속에 상기 삽입부가 끼워진 때, 상기 오목부와 형상 맞춤되게 마련된 압박부를 구비한 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 가스 벤팅패스는,복수 개의 상기 배터리 모듈과 일대일로 연통하는 복수의 단위 가스 벤팅패스를 포함하는 것을 특징으로 하는 배터리 팩.
- 제1항 내지 제12항 중 어느 한 항에 따른 배터리 팩을 포함하는 것을 특징으로 하는 자동차.
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| CN202380015440.1A CN118476106A (zh) | 2022-10-04 | 2023-09-11 | 具有气体排放路径的电池组 |
| JP2024572467A JP2025521234A (ja) | 2022-10-04 | 2023-09-11 | ガスベントパスを備えるバッテリーパック |
| US18/862,920 US20250385383A1 (en) | 2022-10-04 | 2023-09-11 | Battery pack with gas venting path |
| EP23875087.1A EP4468498A4 (en) | 2022-10-04 | 2023-09-11 | Battery pack with gas venting path |
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| KR10-2022-0126569 | 2022-10-04 | ||
| KR1020220126569A KR102926488B1 (ko) | 2022-10-04 | 2022-10-04 | 가스 벤팅패스를 구비한 배터리 팩 |
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| EP (1) | EP4468498A4 (ko) |
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| KR102913229B1 (ko) * | 2022-11-21 | 2026-01-14 | 주식회사 엘지에너지솔루션 | 토출물 분리배출유닛을 갖는 배터리 모듈 및 이를 포함하는 배터리 팩 |
| US20240413474A1 (en) * | 2023-06-08 | 2024-12-12 | GM Global Technology Operations LLC | Battery cell array to pack thermal runaway gas venting system using mid pack channel system |
| CN121312008A (zh) * | 2024-04-16 | 2026-01-09 | 株式会社Lg新能源 | 电池组 |
| KR20250159917A (ko) * | 2024-05-03 | 2025-11-11 | 주식회사 엘지에너지솔루션 | 배터리 팩 및 이를 포함하는 자동차 |
| KR20250159938A (ko) * | 2024-05-03 | 2025-11-11 | 주식회사 엘지에너지솔루션 | 배터리 팩 및 이를 포함하는 자동차 |
| KR20260011962A (ko) * | 2024-07-17 | 2026-01-26 | 주식회사 엘지에너지솔루션 | 배터리 팩 및 이를 포함하는 자동차 |
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- 2022-10-04 KR KR1020220126569A patent/KR102926488B1/ko active Active
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- 2023-09-11 WO PCT/KR2023/013599 patent/WO2024076019A1/ko not_active Ceased
- 2023-09-11 JP JP2024572467A patent/JP2025521234A/ja active Pending
- 2023-09-11 CN CN202380015440.1A patent/CN118476106A/zh active Pending
- 2023-09-11 US US18/862,920 patent/US20250385383A1/en active Pending
- 2023-09-11 EP EP23875087.1A patent/EP4468498A4/en active Pending
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Also Published As
| Publication number | Publication date |
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| US20250385383A1 (en) | 2025-12-18 |
| KR102926488B1 (ko) | 2026-02-10 |
| EP4468498A4 (en) | 2025-04-23 |
| EP4468498A1 (en) | 2024-11-27 |
| JP2025521234A (ja) | 2025-07-08 |
| KR20240047208A (ko) | 2024-04-12 |
| CN118476106A (zh) | 2024-08-09 |
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