WO2024019403A1 - 배터리 팩 및 이를 포함하는 자동차 - Google Patents
배터리 팩 및 이를 포함하는 자동차 Download PDFInfo
- Publication number
- WO2024019403A1 WO2024019403A1 PCT/KR2023/009894 KR2023009894W WO2024019403A1 WO 2024019403 A1 WO2024019403 A1 WO 2024019403A1 KR 2023009894 W KR2023009894 W KR 2023009894W WO 2024019403 A1 WO2024019403 A1 WO 2024019403A1
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- WO
- WIPO (PCT)
- Prior art keywords
- cell
- pouch
- cover
- battery pack
- battery
- 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.)
- Ceased
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—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
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/222—Inorganic material
- H01M50/224—Metals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
- H01M50/358—External gas exhaust passages located on the battery cover or case
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/383—Flame arresting or ignition-preventing means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to a battery pack and a vehicle including the same, and more specifically, to a battery pack having excellent stability against thermal events and a vehicle including the same.
- nickel-cadmium batteries or nickel-hydrogen batteries were widely used as secondary batteries, but recently, lithium secondary batteries have almost no memory effect compared to nickel-based secondary batteries, allowing for free charging and discharging, a very low self-discharge rate, and high energy density. Batteries are widely used.
- a lithium secondary battery mainly use lithium-based oxide and carbon material as positive and negative electrode active materials, respectively.
- a lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate coated with the positive electrode active material and the negative electrode active material are disposed with a separator in between, and an exterior material, that is, a battery case, that seals and stores the electrode assembly together with an electrolyte solution.
- secondary batteries can be classified into can-type batteries in which the electrode assembly is built into a metal can and pouch-type batteries in which the electrode assembly is built in a pouch of an aluminum laminate sheet, depending on the shape of the exterior material.
- battery packs have been widely used for driving or energy storage in medium to large-sized devices such as electric vehicles or energy storage systems.
- a conventional battery pack includes one or more battery modules inside a pack case and a control unit that controls charging and discharging of the battery pack.
- the battery module is configured to include a plurality of battery cells inside a module case.
- a plurality of battery cells are stored inside a module case to form each battery module, and one or more of these battery modules are stored inside the pack case to form a battery pack.
- pouch-type batteries have advantages in many aspects, such as being light in weight and requiring less dead space when stacked, but they are vulnerable to external shocks and have somewhat poor assembly properties.
- battery packs it is common for battery packs to be manufactured by first modularizing a number of cells and then storing them inside a pack case.
- conventional battery packs may be disadvantageous in terms of energy density, assembly, cooling, etc. due to modularization.
- conventional battery packs or battery modules may be vulnerable to thermal events. In particular, if a thermal event occurs inside a battery module or battery pack, thermal runaway may occur, resulting in flames and, in severe cases, explosion.
- the present invention was created to solve the above problems, and its purpose is to provide a battery pack that can ensure excellent safety when a thermal event occurs and a vehicle including the same.
- a plurality of pouch-type battery cells a pack case storing the pouch-type battery cells in an internal space; and a battery pack including a plurality of cell covers, which are provided in an internal space of the pack case to at least partially surround at least some of the pouch-type battery cells among the plurality of pouch-type battery cells and are configured to change length in the width direction.
- an discharge hole is formed on at least one side of the pack case, and the communication area with the discharge hole can be varied by changing the length of the cell cover in the width direction.
- the discharge holes of the pack case may be formed long or formed in multiple numbers along the arrangement direction of the plurality of cell covers.
- the cell cover may be configured to cover both sides and an upper side of at least some of the pouch-type battery cells.
- the cell cover includes an upper cover portion formed on the upper side, and the upper cover portion may be configured in a wrinkled shape.
- a triangle portion folded into a triangle shape may be formed on the upper cover portion.
- the cell cover may be configured to support the stacked state of the plurality of pouch-type battery cells.
- the cell cover may be formed in an n-shape.
- the cell cover may be made of a metal material.
- a bus bar connecting a plurality of electrode leads may be further included.
- the cell cover may be configured to partially surround the pouch-type battery cell so that at least one side of the wrapped pouch-type battery cell is exposed to the outside.
- the cell cover may be configured so that at least one side of the wrapped pouch-type battery cell is exposed toward the bottom of the battery pack.
- the cell cover may be directly mounted on the pack case.
- a vehicle including the above-described battery pack can be provided.
- a plurality of pouch-type battery cells can be stably stored inside a pack case or module case without the need for a stacking frame such as a plastic cartridge or a separate module case.
- a pouch-type battery cell having a case made of a flexible material can be easily made into a sturdy form, so that a configuration in which the battery cells are directly stacked inside the pack case can be more easily implemented. Accordingly, assembly and mechanical stability of the battery pack or battery module can be improved.
- thermal runaway occurs in a specific battery cell, it is possible to effectively respond to a thermal event.
- the accumulation or discharge of heat corresponding to the ignition source can be blocked or appropriately controlled.
- venting gas emission control, directional venting, and flame exposure suppression can be implemented.
- the safety of users located on the upper side can be improved by providing directional venting in the lower direction.
- the module case, etc. can be eliminated, thereby improving cooling performance and energy density.
- the present invention may have various other effects, and these will be described in each implementation configuration, or the description of effects that can be easily inferred by those skilled in the art will be omitted.
- FIG. 1 is a schematic exploded perspective view of a battery pack according to an embodiment of the present invention.
- Figures 2 to 4 are diagrams illustrating a process in which a cell cover is coupled to a pouch-type battery cell stored inside a battery pack and two pouch-type battery cells are connected to a bus bar according to an embodiment of the present invention.
- Figure 5 is a cross-sectional view of a pouch-type battery cell stored inside a battery pack according to an embodiment of the present invention.
- FIG. 6 is a diagram illustrating a process in which the length of the cell cover changes according to expansion and contraction of the pouch-type battery cell of FIG. 5.
- Figure 7 is a diagram schematically showing the pack case configuration of a battery pack according to an embodiment of the present invention.
- Figure 8 is a diagram showing a modified embodiment of Figure 5.
- Figure 9 is a diagram for explaining a vehicle including a battery pack according to each embodiment of the present invention.
- Coupled to refers not only to the case where one member and another member are directly coupled or directly connected, but also when one member is indirectly coupled to another member through a joint member, or indirectly connected to another member. Also includes cases where it is connected to .
- FIG. 1 is a schematic exploded perspective view of a battery pack according to an embodiment of the present invention
- Figures 2 to 4 show a cell cover coupled to a pouch-type battery cell stored inside the battery pack according to an embodiment of the present invention.
- It is a diagram illustrating the process of connecting two pouch-type battery cells to a bus bar.
- FIG. 5 is a cross-sectional view of a pouch-type battery cell stored inside a battery pack according to an embodiment of the present invention
- FIG. 6 is a pouch of FIG. 5.
- This is a diagram showing the process of changing the length of the cell cover according to the expansion and contraction of the battery cell.
- Figure 7 is a diagram schematically showing the pack case configuration of the battery pack according to an embodiment of the present invention
- Figure 8 is This is a diagram showing a modified example of Figure 5.
- the present invention relates to a battery pack 10 in which the battery cells 100 can be directly stored in the pack case 200 of the battery pack 10 by removing the battery module.
- the module case of the battery module may not be included in the configuration.
- the pouch-type battery cell 100 of each embodiment of the present invention may be accommodated in the module case provided in the battery module.
- the battery module provided with the pouch-type battery cell 100 combined with the cell cover 300 in each embodiment of the present invention also falls within the scope of the present invention.
- the battery cell 100 refers to a pouch-type battery cell 100.
- a battery pack 10 includes a pouch-type battery cell 100, a pack case 200, and a cell cover 300.
- the pouch-type battery cell 100 is a pouch-type secondary battery and may include an electrode assembly, an electrolyte, and a pouch exterior material. A plurality of such pouch-type battery cells 100 may be included in the battery pack 10 . And, these plurality of pouch-type battery cells 100 may be stacked in at least one direction.
- the pack case 200 has an empty space inside, and pouch-type battery cells 100 can be stored in this inner space.
- the pouch-type battery cell 100 can be directly seated on the pack case 200.
- the cell cover 300 may be provided to at least partially cover the pouch-type battery cell 100.
- the cell cover 300 may be configured to cover both sides and the top of at least a portion of the pouch-type battery cell 100. However, it is not limited to this.
- the cell cover 300 may be configured to partially surround the pouch-type battery cell 100 so that at least one side of the wrapped pouch-type battery cell 100 is exposed to the outside.
- the cell cover 300 may be configured to support the pouch-type battery cell 100 in an upright state. It is generally not easy to stack the pouch-type battery cells 100 in an upright direction.
- the cell cover 300 surrounds one or more pouch-type battery cells 100, and the wrapped pouch-type battery cells 100 are in an upright state, that is, in a standing state. It can be configured to maintain .
- the cell cover 300 may be configured so that at least one side of the wrapped pouch-type battery cell 100 is exposed toward the bottom surface of the battery pack 10.
- the cell cover 300 configured to surround at least some of the pouch-type battery cells 100 among the plurality of pouch-type battery cells 100 may be stored in the internal space of the pack case 200. .
- the cell cover 300 may be configured to surround a various number of pouch-type battery cells 100 together.
- the cell cover 300 may be configured to cover one pouch-type battery cell 100 together.
- it may be configured to surround two pouch-type battery cells 100 together, or it may be configured to surround three or more pouch-type battery cells 100 together.
- the cell cover 300 includes an upper cover portion 310 formed on the upper side.
- the upper cover portion 310 may be formed in various ways, for example, may have a wrinkled shape, but is not limited thereto.
- an upper cover portion 310 having a wavy or wrinkled shape may be formed on the upper side of the cell cover 300.
- the upper cover portion 310 may be formed in various sizes or shapes.
- the wrinkled structure of the upper cover portion 310 may be formed in a concavo-convex shape.
- the cell cover 300 may have a repeated structure of being concave toward the inner direction where the battery cell 100 is located and convex toward the outer direction.
- the cell cover 300 may be directly seated on the upper surface of the pack case 200.
- the lower end of the cell cover 300 may be seated in direct contact with the upper surface of the pack case 200.
- the cell cover 300 and the pouch-type battery cell 100 can be directly seated in the pack case 200 without being stored in a separate module case.
- the embodiment in which the module is modularized by being seated in a module case is not excluded.
- the cooling performance of the battery pack 10 can be secured more effectively.
- the pouch-type battery cells 100 can be in face-to-face contact with the pack case 200, the heat emitted from each pouch-type battery cell 100 is directly transferred to the pack case 200, improving cooling performance. It can be.
- the cell cover 300 may be configured to support the stacked state of the plurality of pouch-type battery cells 100.
- the plurality of pouch-type battery cells 100 may be stacked in a horizontal direction in an erect state, and the cell cover 300 may be configured to stably support the plurality of pouch-type battery cells 100 in an erect state. .
- the cell cover 300 may be formed in an approximately n-shape. At this time, the front, rear, and bottom of the cell cover 300 may be open.
- the shape of the cell cover 300 is not limited to an approximately n-shape.
- the cell cover 300 may be formed in various shapes.
- the cell cover 300 may be formed in a ' ⁇ ' shape, an 'U' shape, or an 'O' shape.
- the cell cover 300 may be made of a metal material.
- the cell cover 300 may be made of a steel material, for example, stainless steel (SUS).
- the stainless steel material has excellent mechanical strength and rigidity and has a higher melting point than the aluminum material, so even if a flame occurs in any battery cell 100, the cell cover 300 is melted by the flame, etc. more effectively. It can be prevented.
- the material of the cell cover 300 is not limited to this.
- the cell cover 300 may be at least partially adhered to the pouch-type battery cell 100. Additionally, thermal resin (not shown) may be interposed between the pouch-type battery cell 100 and the pack case 200 and/or between the cell cover 300 and the pack case 200.
- the battery pack 10 may further include a bus bar 700 (see FIG. 4).
- the bus bar 700 may be connected to the electrode leads of one or more pouch-type battery cells 100.
- the bus bar 700 can connect a plurality of electrode leads to enable serial or parallel connection between the plurality of battery cells 100.
- electrode leads may be located at the front and rear of each pouch-type battery cell 100.
- the bus bar 700 is located at the front and rear of the battery cell 100 and can connect electrode leads.
- the bus bar 700 is made of an electrically conductive material such as copper or aluminum and can be in direct contact with the electrode leads.
- the battery pack 10 may further include a control module configured to control charging and discharging of the pouch-type battery cells 100.
- this control module may include a battery management system (BMS) 500 and a battery cutoff unit 600, together with a battery cell 100 and a cell cover 300, pack It can be stored inside the case 200.
- BMS battery management system
- the battery pack 10 may further include an end plate (not shown) coupled to the open portion of the cell cover 300.
- the cell cover 300 may have open front and rear sides provided with electrode leads.
- an end plate (not shown) may be coupled to the open portion of the cell cover 300.
- holes or cuts for venting may be formed in the end plate (not shown).
- a separation structure between the battery cells 100 may be further included.
- a discharge hole 210 may be formed on at least one side of the pack case 200.
- one or multiple discharge holes 210 may be formed at the bottom of the pack case 200.
- the discharge hole 210 may be formed to penetrate the pack case 200 in the inner and outer directions so that gas, etc. in the internal space can be discharged to the outside.
- the upper cover portion 310 formed on the cell cover 300 is configured to change length in the width direction.
- the communication area with the discharge hole 210 may be varied by changing the length of the cell cover 300 in the width direction.
- Figure 6 shows a change in the thickness of the pouch-type battery cell 100 accommodated inside the cell cover 300 in the battery pack 10 according to an embodiment of the present invention (thickness according to expansion and contraction of the pouch-type battery cell 100). The process of changing the width direction length of the cell cover 300 according to the change is shown.
- FIG. 6 a cell assembly is shown in which three battery cells 100 are each surrounded by three cell covers 300 and are stacked in the left and right directions.
- Figures 6(a) to 6(c) show a case where three situations occur sequentially in this cell assembly.
- the three battery cells 100 are, from left to right, a first cell 100a, a second cell 100b, and a third cell 100c. do. Additionally, the three cell covers 300 are referred to as a first cover 300a, a second cover 300b, and a third cover 300c from left to right.
- the widths of the plurality of battery cells 100a, 100b, and 100c and the plurality of cell covers 300a, 300b, and 300c surrounding them are uniform. can be formed.
- the battery cell 100 may expand. For example, referring to FIG. 6(b), it can be said that thermal runaway has occurred in the second cell 100b, and in this case, the thickness of the second cell 100b may increase.
- the cell cover 300 surrounding the battery cell 100 that is, the second cover 300b
- the second cover 300b has a width, as shown in FIG. 6(b).
- the direction length increases. That is, the width of the cell cover 300 (here, the second cover 300b) becomes larger.
- any battery cell 100 its thickness or section may be reduced compared to the initial level due to discharge of discharged material. For example, looking at the second cell 100b in FIG. 6(c), it can be seen that the thickness has been reduced compared to the second cell 100b in FIG. 6(b). In this case, it can be said that the thickness of the second cell 100b increased due to thermal runaway, and then decreased in thickness as thermal runaway was completed.
- the width direction length of the second cover 300b surrounding the second cell 100b decreases. That is, when the thickness or size of the battery cell 100 decreases, the width direction length of the cell cover 300 surrounding the battery cell 100 may decrease.
- the width of the first cover 300a surrounding the first cell 100a may be reduced.
- the width of the first cover 300a may decrease as the width of the second cover 300b increases.
- the first cover 300a is pressured from right to left, and the thickness of the first cell 100a decreases through completion of thermal runaway. Since is decreased, space is secured inside the first cover 300a by a decrease in the thickness of the first cell 100a, and accordingly, the width of the first cover 300a can be reduced.
- the length of the cell cover 300 in the width direction can be adaptively changed according to expansion or contraction of the battery cell 100 accommodated therein. Therefore, the shape of the cell cover 300 changes appropriately according to the state of the plurality of battery cells 100, especially thermal runaway situations, so that the overall stacked state of the battery cells 100 and the cell cover 300 is stable without collapsing. can be maintained.
- the thermal runaway state may propagate to adjacent cells.
- the width of the cell cover 300 sequentially changes depending on the propagation situation of thermal runaway. By doing so, there may not be a significant change in the overall shape of the battery pack 10.
- the cell cover 300 may communicate with the discharge hole 210 of the pack case 200. Accordingly, venting gas, etc. inside the cell cover 300 may be discharged to the external space through the discharge hole 210 of the pack case 200.
- the cell cover 300 may be configured so that the communication area with the discharge hole 210 of the pack case 200 is variable by changing the length in the width direction.
- the width of the second cover 300b increases.
- the area of the second cover 300b communicating with the discharge hole 210 formed in the pack case 200 may be expanded.
- the width of the second cover 300b increases, the width of the other cell cover 300, for example, the first cover 300a, may decrease.
- the communication area between the first cover (300a) and the discharge hole 210 is reduced, and the second cover (300b) extends to the portion of the discharge hole 210 that was in communication with the first cover (300a), and the communication area is reduced. Area may increase.
- one cell cover 300 in a normal state, has two discharge holes 210 and a communication pipe (first cover 300a, second cover 300b, and third cover). (300c) are all connected to the two discharge holes 210), but in FIG. 6(b), when the width of the second cover 300b increases due to the expansion of the second cell 100b, the second cover 300b has 3 It may be in communication with two discharge holes 210.
- the second cover (300b) communicates with the two discharge holes (210), but when the second cell (100b) expands, the second cover (300b) communicates with the three discharge holes (210). , the communication area increases.
- the number of discharge holes 210 in communication with the cell cover 300 changes according to the expansion or contraction of the battery cell 100 accommodated inside the cell cover 300, thereby increasing the overall communication. Since the area varies, this has the effect of enabling appropriate internal pressure control.
- the discharge holes 210 can be used in parallel. That is, the cell cover 300 may be configured to use the discharge hole 210 in communication with another cell cover 300 depending on the situation by changing the width.
- the discharge hole 210 of the pack case 200 may be formed long along the direction in which the plurality of cell covers 300 are placed.
- the discharge hole 210 of the pack case 200 is elongated in the left and right directions. can be formed.
- a plurality of discharge holes 210 may be formed along the arrangement direction of the plurality of cell covers 300.
- a plurality of discharge holes 210 of the pack case 200 may be formed in the left and right directions.
- the number, arrangement, and shape of the discharge holes 210 may vary.
- the cell cover 300 may have a wrinkled upper cover portion.
- the cell cover 300 may be formed in a plate shape with two flat sides and a corrugated upper side.
- the upper cover portion 310 is formed on the upper side of the cell cover 300, and a triangle portion 319 folded into a triangle shape is formed on the upper cover portion 310. You can. That is, the upper side of the cell cover 300 may be formed in a folded form to have multiple triangular shapes.
- the top and two sides of the cell cover 300 may have different thicknesses.
- the upper side may be formed to be thinner than the two side sides.
- the cell cover 300 may be configured to discharge venting gas downward.
- the cell cover 300 may be in the form of an n-fin, with the top and left and right sides closed based on the battery cell 100 accommodated therein. At this time, the cell cover 300 may be configured so that the venting gas present inside is discharged downward.
- a discharge hole 210 may be formed in the bottom of the pack case 200.
- the discharge hole 210 of the pack case 200 may communicate with the internal space of the cell cover 300, the venting gas generated from the battery cell 100 inside the cell cover 300 is discharged through the discharge hole 210. ) can be discharged to the outside.
- the cell cover 300 and the battery cell 100 are seated on the bottom of the pack case 200, and the venting gas discharged from the battery cell 100 is directed upward and to the side by the cell cover 300. Exhaust is blocked. Additionally, the venting gas can be discharged only downward through the discharge hole 210 of the pack case 200.
- the battery pack 10 may include a thermal barrier 800.
- the thermal barrier 800 may be configured in the form of a pad made of an insulating material and may be interposed between adjacent cell covers 300.
- the thermal barrier 800 may be formed to have a thickness of approximately 2.0t, but is not limited thereto.
- the battery pack 10 according to the present invention is formed by stacking a plurality of cell covers 300 and a plurality of battery cells 100, and the outermost layer in the stacking direction of the cell assembly is formed of glass fiber reinforced plastic (GFRP). ) may further include an insulating or prevention pad such as.
- GFRP glass fiber reinforced plastic
- glass fiber reinforced plastic may be formed to a thickness of 0.35t, but is not limited thereto.
- the battery pack 10 according to the present invention may further include a heating pad.
- one or more battery modules may be stored in the battery pack 10.
- the configurations described in the various embodiments described above, particularly the contents of the battery cell 100 and the cell cover 300, may be applied to the battery module.
- a battery module according to another aspect of the present invention is a battery module stored in the inner space of the pack case 200, and includes a plurality of pouch-type battery cells 100 and the pouch-type battery cells 100 in the inner space. ) and a module case having an discharge hole 210 formed on at least one side, and at least partially surrounding at least some of the plurality of pouch-type battery cells 100 in the inner space of the module case. and may include a plurality of cell covers 300 configured to change length in the width direction.
- An exhaust hole 210 may be formed at the bottom of the module case to discharge venting gas inside the cell cover 300. Additionally, the discharge hole 210 of the module case may be configured to communicate with the storage space of the cell cover 300 stored inside the module case. In this implementation configuration, when venting gas or the like is generated from the battery cell 100 stored inside the cell cover 300, the generated venting gas may be discharged downward rather than upward or forward or backward.
- the cell cover 300 may be configured so that the communication area with the discharge hole 210 of the module case is variable by changing the length in the width direction.
- the discharge hole 210 of the module case may be configured to communicate with the discharge hole 210 of the pack case 200.
- the above-described description of the battery pack 10 may be applied in the same or similar manner, so detailed description is omitted.
- Figure 9 is a diagram for explaining a vehicle including a battery pack according to each embodiment of the present invention.
- the automobile 20 may include one or more battery packs 10 according to each of the above-described embodiments.
- the vehicle 20 includes various vehicles 20 that are designed to use electricity, such as electric vehicles or hybrid vehicles.
- the present invention relates to a battery pack and a vehicle including the same, and is particularly applicable to industries related to secondary batteries.
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Inorganic Chemistry (AREA)
- Battery Mounting, Suspending (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
Claims (14)
- 복수의 파우치형 배터리 셀들;내부 공간에 상기 파우치형 배터리 셀들을 수납하는 팩 케이스; 및상기 팩 케이스의 내부 공간에서, 상기 복수의 파우치형 배터리 셀들 중 적어도 일부 파우치형 배터리 셀을 적어도 부분적으로 감싸도록 마련되며, 폭 방향으로 길이 변화가 가능하게 구성된 다수의 셀 커버를 포함하는 배터리 팩.
- 제1항에 있어서,상기 팩 케이스에는 적어도 일측에 배출홀이 형성되며,상기 셀 커버의 폭 방향의 길이 변화를 통해 상기 배출홀과의 연통 면적이 가변되도록 구성되는 것을 특징으로 하는 배터리 팩.
- 제2항에 있어서,상기 팩 케이스의 배출홀은, 상기 다수의 셀 커버의 배치 방향을 따라 길게 형성되거나 다수 형성되는 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 셀 커버는 상기 적어도 일부 파우치형 배터리 셀의 양 측면과 상측을 감싸도록 구성되는 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 셀 커버는 상측에 형성된 상측 커버부를 포함하며,상기 상측 커버부는 주름진 형태로 구성되는 것을 특징으로 하는 배터리 팩.
- 제5항에 있어서,상기 상측 커버부에는 트라이앵글 형상으로 접혀진 트라이앵글부가 형성되는 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 셀 커버는 상기 복수의 파우치형 배터리 셀들의 적층 상태를 지지하도록 구성되는 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 셀 커버는 n자 형상으로 형성되는 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 셀 커버는 금속 재질로 구성되는 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,다수의 전극 리드를 연결하는 버스바를 더 포함하는 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 셀 커버는 감싸진 파우치형 배터리 셀의 적어도 일측이 외부로 노출되도록 파우치형 배터리 셀을 부분적으로 감싸는 형태로 구성되는 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 셀 커버는 감싸진 파우치형 배터리 셀의 적어도 일측이 배터리 팩의 바닥면을 향하여 노출되도록 구성되는 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 셀 커버는 상기 팩 케이스에 직접 안착되는 것을 특징으로 하는 배터리 팩.
- 제1항 내지 제13항 중 어느 한 항에 따른 배터리 팩을 포함하는 자동차.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380013150.3A CN117795746A (zh) | 2022-07-20 | 2023-07-11 | 电池组和包括该电池组的车辆 |
| JP2024515665A JP7735553B2 (ja) | 2022-07-20 | 2023-07-11 | バッテリーパック及びこれを含む自動車 |
| CA3237012A CA3237012A1 (en) | 2022-07-20 | 2023-07-11 | Battery pack, and vehicle including the same |
| EP23843254.6A EP4391177A4 (en) | 2022-07-20 | 2023-07-11 | BATTERY PACK AND VEHICLE COMPRISING IT |
| US18/693,085 US20250132433A1 (en) | 2022-07-20 | 2023-07-11 | Battery Pack and Vehicle Including the Same |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2022-0089757 | 2022-07-20 | ||
| KR20220089757 | 2022-07-20 | ||
| KR20220089756 | 2022-07-20 | ||
| KR10-2022-0089756 | 2022-07-20 | ||
| KR1020230090097A KR102640332B1 (ko) | 2022-07-20 | 2023-07-11 | 배터리 팩 및 이를 포함하는 자동차 |
| KR10-2023-0090097 | 2023-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024019403A1 true WO2024019403A1 (ko) | 2024-01-25 |
Family
ID=89618020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2023/009894 Ceased WO2024019403A1 (ko) | 2022-07-20 | 2023-07-11 | 배터리 팩 및 이를 포함하는 자동차 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20250132433A1 (ko) |
| JP (1) | JP7735553B2 (ko) |
| CA (1) | CA3237012A1 (ko) |
| WO (1) | WO2024019403A1 (ko) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160148398A (ko) * | 2015-06-16 | 2016-12-26 | 주식회사 엘지화학 | 이차 전지용 셀 커버 및 이를 포함하는 배터리 모듈 |
| KR20170142446A (ko) * | 2016-06-17 | 2017-12-28 | 에스케이이노베이션 주식회사 | 이차 전지용 다기능 구조체 및 이를 포함하는 이차 전지 팩 |
| KR20180068379A (ko) * | 2016-12-13 | 2018-06-22 | 현대자동차주식회사 | 전기자동차의 배터리 케이스 |
| KR20200033666A (ko) * | 2018-09-20 | 2020-03-30 | 주식회사 엘지화학 | 배터리 모듈, 이러한 배터리 팩을 포함하는 배터리 팩 및 이러한 배터리 팩을 포함하는 자동차 |
| WO2022126841A1 (zh) * | 2020-12-14 | 2022-06-23 | 天津市捷威动力工业有限公司 | 延缓热失控的电池模组及使用其的车辆 |
| KR20220089756A (ko) | 2020-12-21 | 2022-06-29 | 일진하이솔루스 주식회사 | 주름 라이너가 구비된 비정형 수소가스저장탱크 및 이의 제조방법 |
| KR20220089757A (ko) | 2020-12-21 | 2022-06-29 | 한국전자통신연구원 | 양자 진단 회로 및 그것의 양자 특성 진단 방법 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6960271B2 (ja) | 2017-08-10 | 2021-11-05 | 日立造船株式会社 | 全固体電池 |
| CN112331992B (zh) | 2019-11-08 | 2021-12-03 | 宁德时代新能源科技股份有限公司 | 电池包及装置 |
-
2023
- 2023-07-11 US US18/693,085 patent/US20250132433A1/en active Pending
- 2023-07-11 WO PCT/KR2023/009894 patent/WO2024019403A1/ko not_active Ceased
- 2023-07-11 JP JP2024515665A patent/JP7735553B2/ja active Active
- 2023-07-11 CA CA3237012A patent/CA3237012A1/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160148398A (ko) * | 2015-06-16 | 2016-12-26 | 주식회사 엘지화학 | 이차 전지용 셀 커버 및 이를 포함하는 배터리 모듈 |
| KR20170142446A (ko) * | 2016-06-17 | 2017-12-28 | 에스케이이노베이션 주식회사 | 이차 전지용 다기능 구조체 및 이를 포함하는 이차 전지 팩 |
| KR20180068379A (ko) * | 2016-12-13 | 2018-06-22 | 현대자동차주식회사 | 전기자동차의 배터리 케이스 |
| KR20200033666A (ko) * | 2018-09-20 | 2020-03-30 | 주식회사 엘지화학 | 배터리 모듈, 이러한 배터리 팩을 포함하는 배터리 팩 및 이러한 배터리 팩을 포함하는 자동차 |
| WO2022126841A1 (zh) * | 2020-12-14 | 2022-06-23 | 天津市捷威动力工业有限公司 | 延缓热失控的电池模组及使用其的车辆 |
| KR20220089756A (ko) | 2020-12-21 | 2022-06-29 | 일진하이솔루스 주식회사 | 주름 라이너가 구비된 비정형 수소가스저장탱크 및 이의 제조방법 |
| KR20220089757A (ko) | 2020-12-21 | 2022-06-29 | 한국전자통신연구원 | 양자 진단 회로 및 그것의 양자 특성 진단 방법 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2024533443A (ja) | 2024-09-12 |
| CA3237012A1 (en) | 2024-01-25 |
| JP7735553B2 (ja) | 2025-09-08 |
| US20250132433A1 (en) | 2025-04-24 |
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