WO2024019529A1 - 배터리 셀 유닛, 이를 포함하는 배터리 팩 및 자동차 - Google Patents
배터리 셀 유닛, 이를 포함하는 배터리 팩 및 자동차 Download PDFInfo
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- WO2024019529A1 WO2024019529A1 PCT/KR2023/010418 KR2023010418W WO2024019529A1 WO 2024019529 A1 WO2024019529 A1 WO 2024019529A1 KR 2023010418 W KR2023010418 W KR 2023010418W WO 2024019529 A1 WO2024019529 A1 WO 2024019529A1
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- Prior art keywords
- battery cell
- cell
- pouch
- cover
- cell cover
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- 238000013022 venting Methods 0.000 claims description 29
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
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Images
Classifications
-
- 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
-
- 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
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
-
- 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
- H01M50/147—Lids or covers
- H01M50/155—Lids or covers characterised by the material
- H01M50/157—Inorganic material
- H01M50/159—Metals
-
- 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
-
- 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
- H01M50/35—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
- H01M50/383—Flame arresting or ignition-preventing means
-
- 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
- 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
-
- 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
-
- 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 cell unit, a battery pack including the same, and a vehicle. More specifically, it relates to a battery cell unit with improved stability, etc., and a battery pack 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. Therefore, it is common for battery packs to be manufactured by first modularizing a number of cells and then storing them inside a pack case.
- thermal propagation between battery cells is not properly suppressed, this may lead to thermal events in other battery cells included in the battery pack, causing larger problems such as ignition or explosion of the battery pack.
- the present invention was created to solve the above-mentioned problem, and when a thermal event occurs in a battery cell, it prevents flames, sparks, venting gas, etc. erupting from the battery cell from spreading to other surrounding battery cells. Furthermore, the purpose of the present invention is to provide a battery cell unit configured to discharge venting gas so that internal pressure is reduced, but venting gas is discharged in a specific direction, a battery pack including the same, and a vehicle.
- a pouch-type battery cell and a cell cover provided to at least partially surround the pouch-type battery cell, wherein the cell cover is configured to be spaced apart from the pouch-type battery cell, and the cell cover includes a cell cover provided to cover the pouch-type battery cell when a thermal event occurs.
- a battery cell unit may be provided, characterized in that a particle pocket portion configured to collect particles is formed.
- the cell cover is configured to surround both sides and the top of the pouch-type battery cell, and the particle pocket portion may be formed on the upper side of the cell cover.
- the particle pocket portion may be configured such that side portions on both sides along the width direction of the cell cover protrude more toward the top than the center portion on the upper side of the cell cover.
- a mesh member may be formed inside the particle pocket portion.
- the mesh member may be formed by overlapping several sheets of porous metal plates.
- a directional venting part may be formed on the cell cover to guide venting gas and discharge it in a preset direction.
- it includes a thermal resin coupled to the cell cover, wherein the cell cover has a portion to which the thermal resin is coupled and a portion to which the thermal resin is not bonded, and the directional venting portion includes the a gas exhaust port formed in a portion of the cell cover to which the thermal region is not coupled; And it may include a moving passage formed between the pouch-type battery cell and the cell cover.
- the gas exhaust port may be formed at the bottom of the cell cover.
- 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.
- a battery pack may be provided including a pack case for storing the battery cell unit in an internal space.
- 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 cell unit can be provided.
- a thermal event occurs in a battery cell
- flames, sparks, venting gas, etc. ejected from the battery cell can be prevented from spreading to other surrounding battery cells, and the venting gas is discharged to reduce sudden pressure.
- the venting gas is discharged to reduce sudden pressure.
- 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.
- FIGS. 1 to 3 are diagrams illustrating a process in which a cell cover is coupled to a pouch-type battery cell and two pouch-type battery cells are connected to a bus bar in a battery cell unit according to an embodiment of the present invention.
- Figure 4 is an exploded perspective view of a pouch-type battery cell and a cell cover provided in a battery cell unit according to an embodiment of the present invention.
- FIG. 5 is a cross-sectional view of the pouch-type battery cell of FIG. 4 combined with the cell cover.
- FIG. 6 is a partial perspective view showing a gas exhaust port in which the pouch-type battery cell of FIG. 4 and the cell cover are combined.
- FIG. 7 is a side cross-sectional view of the pouch-type battery cell of FIG. 4 combined with the cell cover, showing a directional venting portion that is an exhaust path for gas.
- Figure 8 is a schematic exploded perspective view of a battery pack according to an embodiment of the present invention.
- 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 to 3 are diagrams illustrating a process in which a cell cover is coupled to a pouch-type battery cell and two pouch-type battery cells are connected to a bus bar in a battery cell unit according to an embodiment of the present invention
- FIG. It is an exploded perspective view of a pouch-type battery cell and a cell cover provided in a battery cell unit according to an embodiment of the invention.
- FIG. 5 is a combined cross-sectional view of the pouch-type battery cell and cell cover of FIG. 4
- FIG. 6 is a pouch of FIG. 4.
- a partial perspective view of the battery cell and cell cover combined shows the gas exhaust port
- Figure 7 is a side cross-sectional view of the pouch type battery cell of Figure 4 combined with the cell cover, showing the directional venting portion that is the gas exhaust path. .
- a battery cell unit 15 includes a pouch-type battery cell 100 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 a battery module (not shown) or a battery pack 10 (see FIG. 8). And, these plurality of pouch-type battery cells 100 may be stacked in at least one direction.
- 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. However, the cell cover 300 provided in the battery cell unit 15 according to the present invention surrounds one or more pouch-type battery cells 100 and maintains the upright state of the wrapped pouch-type battery cells 100, that is, , may be configured to maintain an upright position.
- 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 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.
- thermal resin 400 (see FIGS. 5 and 6) may be interposed between the pouch-type battery cell 100 and the pack case 200 and between the cell cover 300 and the pack case 200. .
- the battery cell unit 15 may include a bus bar 700 (see FIG. 3).
- 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 cell cover 300 is configured to be spaced apart from the pouch-type battery cell 100, and in addition, the cell cover 300 contains particles ejected from the pouch-type battery cell 100 when a thermal event occurs.
- a particle pocket portion 320 configured to collect may be formed.
- the particle pocket portion 320 may be formed at various locations on the cell cover 300.
- the particle pocket portion 320 may be formed on the upper side of the cell cover 300, but is not limited thereto.
- the particle pocket portion 320 is formed on the upper side of the cell cover 300 so that the side portions 315 and 317 on both sides along the width direction of the cell cover 300 protrude more toward the top than the center portion 316. It can be.
- a preset space above the pouch-type battery cell 100 may be formed inside the cell cover 300.
- the particle pocket unit 320 is configured to collect particles ejected from the pouch-type battery cell 100 when a thermal event occurs.
- the particle pocket portion 320 protrudes both side portions 315 and 317 of the cell cover 300, and a preset space is formed inside the protruding portion, and when a thermal event occurs through that space, the battery cell ( 100) It may be configured to collect high-temperature dust, particles, etc. emitted.
- particles may refer to active materials or molten aluminum particles detached from electrodes inside the battery cell 100.
- High-temperature dust, particles, etc. act as ignition sources among the three elements of fire: combustibles, ignition sources, and oxygen. Therefore, when they encounter combustibles and oxygen on the outside of the cell cover 300, ignition occurs and the pack case ( 200) Flames inside can spread rapidly. Accordingly, it is necessary to prevent high-temperature dust, particles, etc. from escaping to the outside of the cell cover 300.
- the cell cover 300 is provided with a particle pocket portion 320 and can collect high-temperature dust, particles, etc. According to this, even if a thermal event occurs in any pouch-type battery cell 100, it is possible to prevent flames from rapidly spreading to other battery cells 100 or electrical components inside the pack case 200. .
- the particle pocket portion 320 may be formed on the upper side of the cell cover 300. Due to this shape, the upper side of the cell cover 300 is covered with thermal resin 400. ) may increase the contact area. In this case, heat conductivity to the outside of the cell cover 300 can be increased, thereby improving cooling efficiency.
- the upper side of the cell cover 300 may be thermally connected to the pack case 200, which has a large heat capacity, through the thermal resin 400.
- the thermal resin 400 fills the concave central area on the upper side of the cell cover 300, the contact area between the cell cover 300 and the thermal resin 400 can be increased. And, this has the effect of improving heat dissipation performance.
- a mesh member 321 may be formed inside the particle pocket portion 320.
- the mesh member 321 may be provided in the form of overlapping several porous metal plates to function like a flame arrester.
- the movement of flame, high-temperature dust, particles, etc. within the particle pocket portion 320 can be further restricted, thereby preventing the spread of flame to other battery cells 100.
- a directional venting portion 330 may be formed in the cell cover 300.
- the directional venting unit 330 is configured to guide the venting gas and discharge it in a preset direction.
- the cell cover 300 When the thermal resin 400 is coupled to the cell cover 300, as shown in FIG. 6, the cell cover 300 has a portion where the thermal resin 400 is bonded and a portion where the thermal resin 400 is not bonded. exist.
- a gas exhaust port 331 may be formed in a portion of the cell cover 300 to which the thermal resin 400 is not coupled.
- the gas exhaust port 331 may be formed in the lower part of the cell cover 300.
- a moving passage 332 (see FIG. 7) may be formed between the pouch-type battery cell 100 and the cell cover 300.
- the directional venting unit 330 includes the above-described gas exhaust port 331 and the moving passage 332. Referring to the arrow in FIG. 7, the gas generated from the pouch-type battery cell 100 flows through the moving passage ( 332) and can be discharged to the outside through the gas exhaust port 331 toward the lower side of the cell cover 300.
- venting gas when venting gas is generated in the pouch-type battery cell 100, the venting gas may move to the front or rear of the cell cover 300 along the particle pocket portion 320. At this time, particles or flames cannot pass through the mesh member 321 provided in the particle pocket portion 320, and the venting gas passes through the mesh member 321 and includes the movement passage 332 and the gas exhaust port 331. It can be discharged through the directional venting part 330.
- the directional venting portion 330 when gas is generated from any battery cell 100 included in the battery cell unit 15, the gas is transmitted to other adjacent battery cells. Instead of propagating to 100, it may be discharged toward the bottom of the pack case 200 through the directional venting unit 330.
- gas or flame, etc. can be induced and discharged to the outside of the pack case 200 through the directional venting unit 330, so that directional venting can be easily implemented.
- the battery cell unit 15 has the effect of preventing or suppressing thermal runaway propagation of the pouch-type battery cells 100 when a thermal event occurs.
- Figure 8 is a schematic exploded perspective view of a battery pack according to an embodiment of the present invention.
- the battery pack 10 according to an embodiment of the present invention is provided so that the battery cells 100 can be directly stored in the pack case 200 of the battery pack 10 by removing the battery module (not shown).
- the module case of the battery module (not shown) may not be included in the configuration.
- the pouch-type battery cell 100 of each embodiment of the present invention may be accommodated in a module case provided in a battery module (not shown). there is.
- a battery module (not shown) equipped with a pouch-type battery cell 100 combined with a 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.
- the battery pack 10 includes a battery cell unit 15 and a pack case 200.
- the description of the battery cell unit 15 is replaced with the above description.
- the pack case 200 has an empty space inside, and battery cell units 15 including the pouch-type battery cell 100 and the cell cover 300 can be stored in this inner space.
- the battery cell unit 15 can be directly seated on the pack case 200.
- 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 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 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, and together with the battery cell 100 and the cell cover 300, the 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.
- venting gas generated from any battery cell unit can be discharged in a preset direction, making it possible to predict the direction of venting gas movement when a thermal event occurs, thereby providing safer venting without causing thermal damage to other battery cell units. It has the effect of discharging gas to the outside.
- 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 battery cell units, battery packs containing the same, and automobiles, and is particularly applicable to industries related to secondary batteries.
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- Inorganic Chemistry (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims (17)
- 파우치형 배터리 셀; 및상기 파우치형 배터리 셀을 적어도 부분적으로 감싸도록 마련되는 셀 커버를 포함하며,상기 셀 커버는 상기 파우치형 배터리 셀로부터 이격되게 구성되고, 상기 셀 커버에는 열적 이벤트 발생시 상기 파우치형 배터리 셀로부터 분출되는 파티클을 포집하도록 구성된 파티클 포켓부가 형성된 것을 특징으로 하는 배터리 셀 유닛.
- 제1항에 있어서,상기 셀 커버는 상기 파우치형 배터리 셀의 양 측면과 상측을 감싸도록 구성되고, 상기 파티클 포켓부는 상기 셀 커버의 상측에 형성된 것을 특징으로 하는 배터리 셀 유닛.
- 제2항에 있어서,상기 파티클 포켓부는 상기 셀 커버의 상측에서 상기 셀 커버의 폭 방향에 따른 양측 사이드부가 중심부보다 상부 방향으로 더 돌출된 형태로 구성된 것을 특징으로 하는 배터리 셀 유닛.
- 제1항에 있어서,상기 파티클 포켓부 내측에 메쉬부재가 형성된 것을 특징으로 하는 배터리 셀 유닛.
- 제4항에 있어서,상기 메쉬부재는 여러 장의 다공성 금속판을 중첩한 형태로 구성된 것을 특징으로 하는 배터리 셀 유닛.
- 제1항에 있어서,상기 셀 커버에는 벤팅 가스를 유도하여 미리 설정되 방향으로 배출시키는 디렉셔널 벤팅부가 형성된 것을 특징으로 하는 배터리 셀 유닛.
- 제6항에 있어서,상기 셀 커버에 결합되는 써멀 레진을 포함하며,상기 셀 커버에는 상기 써멀 레진이 결합된 부분과, 상기 써멀 레진이 결합되지 않은 부분이 존재하고,상기 디렉셔널 벤팅부는,상기 셀 커버에서 상기 써멀 레전이 결합되지 않은 부분에 형성된 가스 배기구; 및상기 파우치형 배터리 셀과 상기 셀 커버 사이에 형성된 이동통로를 포함하는 것을 특징으로 하는 배터리 셀 유닛.
- 제7항에 있어서,상기 가스 배기구는 상기 셀 커버의 하부에 형성되는 것을 특징으로 하는 배터리 셀 유닛.
- 제1항에 있어서,상기 셀 커버는 상기 복수의 파우치형 배터리 셀들의 적층 상태를 지지하도록 구성되는 것을 특징으로 하는 배터리 셀 유닛.
- 제1항에 있어서,상기 셀 커버는 n자 형상으로 형성되는 것을 특징으로 하는 배터리 셀 유닛.
- 제1항에 있어서,상기 셀 커버는 금속 재질로 구성되는 것을 특징으로 하는 배터리 셀 유닛.
- 제1항에 있어서,다수의 전극 리드를 연결하는 버스바를 더 포함하는 것을 특징으로 하는 배터리 셀 유닛.
- 제1항에 있어서,상기 셀 커버는 감싸진 파우치형 배터리 셀의 적어도 일측이 외부로 노출되도록 파우치형 배터리 셀을 부분적으로 감싸는 형태로 구성되는 것을 특징으로 하는 배터리 셀 유닛.
- 제1항 내지 제13항 중 어느 한 항에 따른 배터리 셀 유닛; 및내부 공간에 상기 배터리 셀 유닛을 수납하는 팩 케이스를 포함하는 배터리 팩.
- 제14항에 있어서,상기 셀 커버는 감싸진 파우치형 배터리 셀의 적어도 일측이 배터리 팩의 바닥면을 향하여 노출되도록 구성되는 것을 특징으로 하는 배터리 팩.
- 제14항에 있어서,상기 셀 커버는 상기 팩 케이스에 직접 안착되는 것을 특징으로 하는 배터리 팩.
- 제1항 내지 제13항 중 어느 한 항에 따른 배터리 셀 유닛을 포함하는 자동차.
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Citations (6)
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KR20170069003A (ko) * | 2015-12-10 | 2017-06-20 | 삼성에스디아이 주식회사 | 배터리 모듈 |
KR20180091301A (ko) * | 2017-02-06 | 2018-08-16 | 삼성에스디아이 주식회사 | 이차 전지 |
KR20200107213A (ko) * | 2019-03-06 | 2020-09-16 | 주식회사 엘지화학 | 화염의 외부 노출을 방지할 수 있는 구조를 갖는 ess 모듈 및 이를 포함하는 배터리 팩 |
KR20210063939A (ko) * | 2019-11-25 | 2021-06-02 | 주식회사 엘지에너지솔루션 | 배터리 모듈 |
KR20220075711A (ko) * | 2020-11-30 | 2022-06-08 | 에스케이온 주식회사 | 배터리 모듈 |
KR20220089572A (ko) | 2020-12-21 | 2022-06-28 | 임청연 | 자동 반려동물 멀티 미용기기 |
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- 2023-07-19 EP EP23843375.9A patent/EP4407774A1/en active Pending
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KR20170069003A (ko) * | 2015-12-10 | 2017-06-20 | 삼성에스디아이 주식회사 | 배터리 모듈 |
KR20180091301A (ko) * | 2017-02-06 | 2018-08-16 | 삼성에스디아이 주식회사 | 이차 전지 |
KR20200107213A (ko) * | 2019-03-06 | 2020-09-16 | 주식회사 엘지화학 | 화염의 외부 노출을 방지할 수 있는 구조를 갖는 ess 모듈 및 이를 포함하는 배터리 팩 |
KR20210063939A (ko) * | 2019-11-25 | 2021-06-02 | 주식회사 엘지에너지솔루션 | 배터리 모듈 |
KR20220075711A (ko) * | 2020-11-30 | 2022-06-08 | 에스케이온 주식회사 | 배터리 모듈 |
KR20220089572A (ko) | 2020-12-21 | 2022-06-28 | 임청연 | 자동 반려동물 멀티 미용기기 |
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