WO2024186189A1 - 내화 코팅층이 탈리되어 벤팅홀이 개방되는 배터리 모듈 - Google Patents
내화 코팅층이 탈리되어 벤팅홀이 개방되는 배터리 모듈 Download PDFInfo
- Publication number
- WO2024186189A1 WO2024186189A1 PCT/KR2024/095203 KR2024095203W WO2024186189A1 WO 2024186189 A1 WO2024186189 A1 WO 2024186189A1 KR 2024095203 W KR2024095203 W KR 2024095203W WO 2024186189 A1 WO2024186189 A1 WO 2024186189A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery module
- refractory coating
- battery
- coating layer
- base layer
- 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
Links
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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
-
- 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
- H01M50/20—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
-
- 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
- H01M50/35—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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to a battery module, and more specifically, to a battery module in which a refractory coating layer applied within a mesh plate on the upper part of the module can be partially detached to open a venting hole.
- a semi-permanent battery that converts electrical energy into chemical energy and can be repeatedly charged and discharged is called a secondary battery, in contrast to a primary battery that cannot be reused after a single use.
- Secondary batteries include lithium secondary batteries, nickel-cadmium (Ni-Cd) batteries, lead-acid batteries, nickel-metal hydride (Ni-MH) batteries, air-zinc batteries, and alkaline manganese batteries. Of these, lead-acid batteries and lithium secondary batteries are the most actively commercialized secondary batteries.
- lithium secondary batteries have high energy storage density, can be made lightweight and miniaturized, and have the advantages of excellent safety, low discharge rate, and long lifespan, so they have recently been actively used as electric vehicle batteries.
- lithium secondary batteries are generally classified into cylindrical, square, and pouch types depending on the manufacturing form, and their use also extends to ESS batteries and other electrical devices in addition to electric vehicle batteries.
- a battery module is configured by connecting multiple lithium ion battery cells in series and/or parallel, and a battery pack is configured by connecting the battery modules in series and/or parallel.
- the space between the module case and the pack case can be formed very narrow.
- the present invention has been created in consideration of the above problems, and has as its primary purpose the provision of a battery module having an improved structure capable of relieving internal pressure by discharging venting gas generated inside the battery module, and preventing flames, etc. emitted from other battery modules in the vicinity from entering.
- a battery module may include a cell assembly having a plurality of battery cells that are mutually stacked; a module case that accommodates the cell assembly in an internal space and has a venting hole formed therein; and a cover member that covers the venting hole and is disposed on an outer surface of the module case, and has a refractory coating layer on which a refractory coating material is applied that is detached by the pressure of the venting gas when the venting gas is generated inside the module case.
- the above venting hole can be formed on the upper side of the module case.
- the above cover member may further include a base layer that is joined so as to face the upper surface of the module case and to which the refractory coating layer is joined.
- the above refractory coating layer is provided over the entire surface area of the base layer, and may be bonded to a portion or the entire section along the thickness direction of the base layer.
- the above-mentioned base layer may include at least one mesh plate having a plurality of mesh meshes and gaps; and a support frame disposed at an edge of the mesh plate to support the mesh plate.
- the above refractory coating layer may be provided such that the refractory coating material is combined with the mesh mesh to block the gap.
- the above refractory coating layer may include one or more inorganic materials selected from ceramic, silicon, silica aerogel, and silica-based inorganic fibers.
- the particle size of the above inorganic material may be relatively smaller than the pores.
- the above-mentioned base layer may include a guide recessed portion that is provided to face the venting hole and guides the introduction of the venting gas.
- the above guide depression may form an axial slope that becomes narrower in the thickness direction of the base layer when viewed from the upper side of the venting hole.
- the above refractory coating layer may be partially provided on the surface of the base layer, and may be formed at a position of the base layer facing the venting hole.
- a battery pack including one or more of the above-described battery modules can be provided.
- the venting gas when venting gas is generated in the internal space of a battery module, the venting gas can be discharged to the outside to relieve internal pressure, and a battery module having an improved structure can be provided so that flames, etc. discharged from other battery modules in the vicinity cannot flow into the battery module.
- the venting hole can be opened as the refractory coating layer is detached due to the gas pressure, so that a sufficient path for venting gas to be discharged can be secured. Accordingly, by quickly discharging the venting gas to the outside, heat accumulation and thermal explosion of the battery module can be effectively prevented.
- the energy density of the battery pack can be prevented from decreasing because there is no need to form a gap or space for opening a separate venting hole.
- the venting holes of adjacent modules are kept closed by the refractory coating layer that maintains heat resistance, thereby preventing external foreign substances, venting gas discharged outside the battery module, or flames or sparks contained in such venting gas from flowing into other venting holes. Therefore, a chain ignition or thermal runaway phenomenon caused by venting gas or flames in normal battery cells or battery modules can be delayed as much as possible.
- FIG. 1 is a schematic perspective view of a battery module according to one embodiment of the present invention.
- Figure 2 is an exploded perspective view of the main components of the battery module of Figure 1.
- FIGS. 3 and 4 are cross-sectional views of a cover member according to one embodiment of the present invention.
- FIG. 5 is a drawing schematically illustrating a modified example of a cover member of a battery module according to one embodiment of the present invention, in which a refractory coating layer is bonded to a different section in the thickness direction of the base layer.
- FIG. 6 is a structural cross-sectional view of a battery pack including a battery module according to one embodiment of the present invention.
- Figure 7 is a partially enlarged view of Figure 6.
- FIG. 8 is a cross-sectional view of a cover member in a battery module according to another embodiment of the present invention.
- FIG. 9 is a drawing schematically illustrating a path through which venting gas is discharged through a cover member in a battery module according to another embodiment of the present invention.
- FIG. 10 is a perspective view of a cover member in a battery module according to another embodiment of the present invention.
- FIG. 1 is a schematic perspective view of a battery module according to one embodiment of the present invention
- FIG. 2 is an exploded perspective view of the main components of the battery module of FIG. 1.
- a battery module (10) according to the present invention includes a cell assembly (100), a module case (200), and a cover member (300).
- each battery cell (110) may mean a secondary battery.
- the battery cell (110) includes an electrode assembly, a case that accommodates the electrode assembly, and a pair of electrode leads (112) that are connected to the electrode assembly and extend outward from the case to function as electrode terminals.
- the pair of electrode leads (112) are extended from both ends of the battery cell (110), that is, in the longitudinal direction.
- the battery cell (110) may have a form in which the electrode lead (112) is positioned only at one end of the battery cell (110).
- the present invention is not limited by the specific type or form of the battery cell (110), and various battery cells (110) known at the time of application of the present invention may be employed to configure the cell assembly (100) of the present invention.
- a pouch-type secondary battery having a high energy density and easy stacking is targeted, but it is of course possible for a cylindrical or square secondary battery to be applied as the battery cell (110).
- These battery cells (110) can be stacked in at least one direction.
- the battery cells (110) can be stacked in a horizontal direction (width direction of the battery module (10)) while standing upright in the vertical direction, referring mainly to FIG. 2.
- the above cell assembly (100) is a group of battery cells (110) formed by stacking a plurality of battery cells (110). That is, the cell assembly (100) may be a group of a plurality of pouch-shaped battery cells (110) that are stacked in one direction with their wide surfaces erected, as shown in FIG. 2.
- the above module case (200) may be configured to have an internal space formed and accommodate battery cells (110) in the internal space.
- the module case (200) of the present embodiment may include a case body (210) and end plates (220) arranged on the front and rear sides of the case body (210).
- the case body (210) may be configured as a square tube shape having an open end (O) that is open at both ends in the length direction and a hollow structure with an empty interior.
- the case body (210) may be configured as a tube shape having an upper surface, a lower surface, a left surface, and a right surface, and having openings formed at the front and rear ends, respectively.
- the case body may be arranged so that the battery cells (110) can be inserted into the inside along the length direction. That is, the case body (210) may be configured so that the battery cells (110) can be inserted into the inside thereof in a sliding or force-fit manner. For the force-fit connection, there may be almost no gap between the upper and lower surfaces of the case body (210) and the upper and lower surfaces of the battery cells (110), and there may be almost no gap between both sides of the case body (210) and both sides of the battery cells (110).
- the case body (210) may be configured with a metal material having rigidity and heat resistance in order to physically or chemically protect the accommodated battery cells (110).
- the end plate (220) may be provided to face one side of the cell assembly (100) so that the electrode leads (112) of the battery cells (110) are positioned, i.e., the part where the electrode leads (112) are fixedly connected to the bus bars on the bus bar frame, are not exposed to the outside, and may be coupled to the open end (O) of the case body (210).
- the end plate (220) may be configured to have an inner side made of an insulating material and an outer side made of a metal material, for example, and may be configured to be fixedly coupled to the case body (210) by welding. Meanwhile, although not shown for convenience of illustration, the end plate (220) may be partially provided with holes or slits to expose components that need to be exposed to the outside, such as a positive terminal and a negative terminal of the battery module (10) or a connector.
- the module case (200) having such a configuration may have a venting hole (H1) formed on at least one side.
- the venting holes (H1) may be formed in multiple numbers on the upper side of the module case (200) so as to be offset to the left and right.
- the venting holes (H1) may be configured so that, when a venting gas is generated and emitted from a cell assembly (100) housed in an internal space, the generated venting gas can be discharged to the external space of the module case (200).
- the module case (200) may be configured in a sealed form except for the venting hole (H1).
- the venting hole (H1) may be formed in a completely open form so as to penetrate the module case (200) in the internal and external directions.
- the above cover member (300) may be arranged on the outer surface of the module case (200) and configured to close the venting hole (H1) formed in the module case (200) in a normal state.
- it may be provided on the upper side of the module case (200) as shown in FIGS. 2 and 3. Accordingly, it may be configured to cover the venting hole (H1) formed on the upper surface of the module case (200).
- the cover member (300) may be configured to selectively open the venting hole (H1) when venting gas is generated from at least one battery cell (110) among the cell assemblies (100) housed inside the module case (200).
- FIG. 3 and FIG. 4 are cross-sectional views of a cover member according to one embodiment of the present invention
- FIG. 5 is a drawing schematically illustrating a modified example of a cover member of a battery module (10) according to one embodiment of the present invention, in which a refractory coating layer is bonded to a different section in the thickness direction of the base layer.
- the above cover member (300), referring mainly to FIGS. 3 and 4, includes a base layer (310) coupled to face the upper surface of the module case (200); and a refractory coating layer (320) coated with a refractory coating material (321) that is released by the pressure of the venting gas when the venting gas is generated inside the module case (200).
- the above base layer (310) is coupled to face the upper surface of the module case (200) and can be provided to have a size substantially the same as that of the upper surface of the module case (200).
- the base layer (310) may be at least one mesh plate (311) having a plurality of mesh meshes (312) and gaps (313).
- the base layer (310) may be configured to block high-temperature flames and sparks that may move together with the venting gas.
- the base layer (310) is arranged to completely cover the venting hole (H1) to block the entry and exit of flames or sparks generated from the venting hole (H1). Accordingly, flames or sparks accompanying the discharge of the venting gas may be sufficiently filtered and blocked to prevent their discharge to the outside of the battery pack, thereby minimizing the risk of ignition of structures around the battery pack or other battery packs.
- the base layer (310) may include a support frame (314) that is arranged at the edge of the mesh plate (311) to support the mesh plate (311). Through the support frame (314), the mesh plate (311) can be firmly held even when exposed to high temperatures, thereby preventing warping, deformation, or damage of the plate surface.
- a venting structure needs to be provided so that the venting gas discharged from inside the battery module (10) can be discharged quickly and effectively.
- a selectively openable structure is required in which the venting hole (H1) is normally kept closed, but is opened when a thermal event occurs and venting gas is generated.
- a refractory coating layer (320) may be provided in which a refractory coating material (321) that is released by the pressure of the venting gas when the venting gas is generated inside the module case (200) is applied.
- the above refractory coating layer (320) can be provided over the entire surface area of the base layer (310).
- the refractory coating layer (320) may be provided such that the refractory coating material (321) is bonded to the mesh net (312) to block the pore (313), as shown in FIG. 4.
- the refractory coating layer (320) may include one or more inorganic materials selected from ceramics, silicon, silica aerogel, and silica-based inorganic fibers.
- the particle size of the inorganic material may be relatively smaller than the pore (313).
- the refractory coating layer (320) may further include a binder (322) that binds the refractory coating material (321) to the mesh net (312) and various additives.
- the binder (322) may be a metal-friendly resin, and examples thereof include polyvinyl acetal resin, acrylic resin, polyvinyl chloride resin, polyolefin resin, and epoxy resin.
- the binder (322) includes the refractory coating material (321) and facilitates attachment to the mesh net (312).
- the additives may include an adhesion promoter, a dispersant, a release agent, a heat stabilizer, an antioxidant, and the like.
- the refractory coating layer (320) may be bonded to a portion of the base layer (310) along the thickness direction.
- the refractory coating layer (320) may be provided in an upper portion (by a preset thickness) of the base layer (310) in the thickness direction of the base layer (310).
- the refractory coating layer (320) may be provided over the entire section in the thickness direction of the base layer (310).
- the refractory coating layer (320) may be provided in a thickness equivalent to that of the base layer (310), so that the refractory coating layer (320) may be detached when the venting gas emitted from the venting hole (H1) has a higher pressure.
- the pressure range of the venting gas in which the venting hole (H1) is completely opened may be increased.
- a refractory coating layer (320) may be provided under the base layer (310).
- the refractory coating layer (320) can cover the venting hole (H1) of the module case (200) without any gaps, so that the sealing degree of the venting hole (H1) can be improved compared to FIG. 4, thereby blocking the inflow of foreign substances, flames, or sparks at a higher level.
- the arrangement position of the refractory coating layer (320) on the base layer (310) can be set differently depending on the pressure of the venting gas, the sealing level, or other design factors.
- a process for applying the refractory coating layer (320) to the base layer (310) For example, a process for applying the refractory coating material (321) by dissolving it in an adhesive solvent to prepare a coating solution and then spraying it can be performed. Depending on the viscosity of the coating solution, the number of times it is sprayed can vary, and the time and temperature in the subsequent process, such as drying, can also be variously adjusted.
- a spraying process in this manner, it can be advantageous in the process of applying the refractory coating layer (320) as in (b) of FIG. 4 and FIG. 5.
- the coating process may be performed by impregnating the base layer (310) in a tank of coating liquid.
- it may be efficient to form a refractory coating layer (320) over the entire thickness direction of the base layer (310) as shown in (a) of Fig. 5.
- FIG. 6 is a structural cross-sectional view of a battery pack including a battery module according to one embodiment of the present invention
- FIG. 7 is a partial enlarged view of FIG. 6.
- venting operation configuration is explained based on a state in which a refractory coating layer (320) is provided over the entire thickness direction of the base layer (310) as in (a) of Fig. 5.
- venting hole (H1) is covered with a refractory coating layer (320) and remains closed.
- the refractory coating layer (320) is separated from the mesh (312) and detached upward by the pressure (high pressure state) of the venting gas.
- the mesh plate (311) in which the gap (313) is formed is exposed.
- the venting gas is discharged to the outside of the case body along the gap (313) of the mesh plate (311). Meanwhile, flames or sparks, etc. are blocked from escaping to the outside of the case body by the mesh (312) of the mesh plate (311).
- the venting gas discharged from the battery module where the event occurred may move along the internal space (430) of the pack case as shown in FIG. 6 and pass over the upper portion of another adjacent battery module (10). Since the refractory coating layer (320) of the cover member (300) of the other battery module exists in a state in which it is not detached from the base layer (310), the other battery module may not be subject to thermal damage due to the venting gas. In addition, since the venting gas moving along the internal space (430) passes over the upper portion of the other battery module in a state in which the pressure is relatively lower than when it is discharged from the event battery module, the refractory coating layer (320) of the other battery module is not detached from the base layer (310) by the venting gas. Accordingly, the venting gas may be prevented from entering the battery module (10).
- the refractory coating layer (320) blocking the venting hole (H1) can be removed by the pressure of the venting gas, thereby opening the venting hole (H1), so that a sufficient exhaust path can be secured for discharging the venting gas from the inside to the outside of the battery module. Accordingly, the venting gas can be quickly discharged to the outside, thereby effectively preventing heat accumulation and thermal explosion of the battery module (10).
- the venting hole (H1) of the adjacent battery module is kept closed due to the refractory coating layer (320) that maintains heat resistance, thereby preventing external foreign substances or venting gas discharged to the outside of the battery module (10) where an event occurred, or flames or sparks included in such venting gas, from flowing into another venting hole (H1). Therefore, a chain ignition or thermal runaway phenomenon caused by venting gas or flames, etc. in a normal battery cell (110) or battery module (10) can be delayed as much as possible.
- FIG. 8 is a cross-sectional view of a cover member in a battery module according to another embodiment of the present invention
- FIG. 9 is a drawing schematically illustrating a path through which venting gas is discharged through a cover member in a battery module according to another embodiment of the present invention.
- a battery module according to another embodiment of the present invention has an additional configuration provided on the base layer (310) of the cover member (300A) compared to the above-described embodiment. That is, the base layer (310) may include a guide recessed portion (330) that is provided to face the venting hole (H1) and guides the introduction of the venting gas.
- the above guide recessed portion (330) may be provided on the lower surface of the base layer (310), as shown in FIGS. 8 and 9.
- the above guide recessed portion (330) may be positioned so as to directly face the venting hole (H1).
- the above guide recessed portion (330) may be provided by processing the lower surface of the base layer (310) by partial pressing or by partial cutting.
- an axial tube slope (331) that becomes narrower in the thickness direction of the base layer (310) when viewed from the upper side from the venting hole (H1) can be formed.
- This axial pipe slope (331) can be arranged to be connected to the vent hole (H1) but with a reduced inner diameter. This can easily induce the venting gas to enter the cover member (300). In particular, the venting gas that enters the venting hole (H1) can easily enter upward in the thickness direction of the base layer (310) along the axial pipe slope (331).
- the flow rate of the venting gas can be increased, so that the pressure of the venting gas can be locally increased, and the detachment of the refractory coating layer (320) can be assisted.
- the thickness of the refractory coating layer (320) can be reduced compared to the first embodiment, and the ratio of the refractory coating layer (320) to the base layer (310) can be controlled by controlling the recessed depth of the guide recessed portion (330).
- the refractory coating layer (320) can be configured to be relatively easily detached according to the pressure of the venting gas.
- the venting hole (H1) can be opened as the refractory coating layer (320) is detached due to the gas pressure, so that a sufficient discharge path for the venting gas can be secured. Accordingly, since the venting gas is quickly discharged to the outside, heat accumulation and thermal explosion of the battery module can be effectively prevented.
- the venting hole (H1) of the adjacent module is kept closed due to the refractory coating layer (320) that maintains heat resistance, thereby preventing external foreign substances, venting gas discharged outside the battery module, or flames or sparks contained in the venting gas from flowing into another venting hole (H1). Therefore, a chain ignition or thermal runaway phenomenon caused by venting gas or flames in a normal battery cell (110) or battery module can be delayed as much as possible.
- FIG. 10 is a perspective view of a cover member in a battery module according to another embodiment of the present invention.
- the refractory coating layer (320) of another battery module may be partially provided on the plate surface of the base layer (310), as shown in FIG. 10, and may be formed at a position of the base layer (310) facing the venting hole (H1).
- the cover member (300B) can be manufactured with relatively low cost and labor, while the function of the refractory coating layer (320) that blocks the venting hole (H1), that is, the closing function of the venting hole (H1) is faithfully performed during normal times, while a so-called selective opening/closing configuration that is released when venting gas is generated can be implemented.
- the venting hole (H1) can be opened as the refractory coating layer (320) is detached due to the gas pressure, so that a sufficient discharge path for the venting gas can be secured. Accordingly, since the venting gas is quickly discharged to the outside, heat accumulation and thermal explosion of the battery module can be effectively prevented.
- the venting hole (H1) of the adjacent module is kept closed due to the refractory coating layer (320) that maintains heat resistance, thereby preventing external foreign substances, venting gas discharged outside the battery module, or flames or sparks contained in the venting gas from flowing into another venting hole (H1). Therefore, a chain ignition or thermal runaway phenomenon caused by venting gas or flames in a normal battery cell (110) or battery module can be delayed as much as possible.
- the battery pack according to the present invention may include one or more battery modules according to the present invention described above.
- the battery pack according to the present invention may include a plurality of battery modules according to the present invention.
- each battery module may include a cell assembly (100), a module case (200), and a cover member (300).
- these plurality of battery modules may be accommodated inside the pack case.
- thermal runaway propagation between modules can be effectively prevented.
- the battery pack according to the present invention may further include, in addition to the battery module or pack case, various other components, such as a BMS (Battery Management System), a bus bar, a relay, a current sensor, a fuse, and other battery pack components known at the time of filing of the present invention, in the internal space of the pack case, etc.
- BMS Battery Management System
- the battery module according to the present invention or the battery pack according to the present invention can be applied to automobiles such as electric automobiles or hybrid automobiles. That is, the automobile according to the present invention can include the battery module according to the present invention or the battery pack according to the present invention. In addition, the automobile according to the present invention can further include various other components included in the automobile in addition to the battery module or the battery pack. For example, the automobile according to the present invention can further include a body, a motor, a control device such as an ECU (electronic control unit), in addition to the battery module according to the present invention.
- ECU electronic control unit
- the battery module according to the present invention or the battery pack according to the present invention can be applied to an energy storage system (ESS). That is, the energy storage system according to the present invention can include the battery module according to the present invention or the battery pack according to the present invention.
- ESS energy storage system
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
Description
Claims (12)
- 상호 적층된 다수의 배터리 셀을 구비하는 셀 어셈블리;내부 공간에 상기 셀 어셈블리를 수납하며, 벤팅홀이 형성된 모듈 케이스; 및상기 벤팅홀을 커버하며 상기 모듈 케이스의 외측면에 배치되고, 상기 모듈 케이스의 내부에 벤팅 가스 발생 시, 상기 벤팅 가스의 압력에 의해 탈리되는 내화 코팅물질이 도포된 내화 코팅층을 구비하는 커버 부재를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 벤팅홀은 상기 모듈 케이스의 상부 측에 형성되는 것을 특징으로 하는 배터리 모듈.
- 제2항에 있어서,상기 커버 부재는, 상기 모듈 케이스 상부면에 대면하게 결합되며, 상기 내화 코팅층이 결합되는 기저층을 더 포함하는 것을 특징으로 하는 배터리 모듈.
- 제3항에 있어서,상기 내화 코팅층은, 상기 기저층의 판면 전 영역에 걸쳐 마련되되, 상기 기저층의 두께 방향을 따라 일부 구간 또는 전 구간에 결합되는 것을 특징으로 하는 배터리 모듈.
- 제3항에 있어서,상기 기저층은 복수의 메쉬망살과 공극을 가진 적어도 하나의 메쉬 플레이트; 및상기 메쉬 플레이트 가장자리에 배치되어 상기 메쉬 플레이트를 지지하는 지지 프레임을 포함하는 것을 특징으로 하는 배터리 모듈.
- 제5항에 있어서,상기 내화 코팅층은 상기 메쉬망살에 상기 내화 코팅물질이 결합되어 상기 공극이 차단되게 마련된 것을 특징으로 하는 배터리 모듈.
- 제5항에 있어서,상기 내화 코팅층은 세라믹, 실리콘, 실리카 에어로겔, 실리카계 무기섬유 중 선택된 하나 이상의 무기질 재료를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제7항에 있어서,상기 무기질 재료의 입도는 상기 공극보다 상대적으로 작은 것을 특징으로 하는 배터리 모듈.
- 제4항에 있어서,상기 기저층은, 상기 벤팅홀에 대면하게 마련되어 상기 벤팅 가스의 인입을 가이드하는 가이드 함몰부를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제9항에 있어서,상기 가이드 함몰부는 상기 벤팅홀에서 상부 측으로 바라볼 때 상기 기저층의 두께방향으로 갈수록 축관되는 축관 경사면이 형성된 것을 특징으로 하는 배터리 모듈.
- 제3항에 있어서,상기 내화 코팅층은 상기 기저층의 판면에 부분적으로 마련되되, 상기 벤팅홀에 대면하는 상기 기저층의 위치에 형성되는 것을 특징으로 하는 배터리 모듈.
- 제1항 내지 제11항 중 어느 한 항에 따른 배터리 모듈을 포함하는 것을 특징으로 하는 배터리 팩.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202480003322.3A CN119487684A (zh) | 2023-03-09 | 2024-02-15 | 使耐火涂层脱层以打开排气孔的电池模块 |
| EP24767475.7A EP4579915A4 (en) | 2023-03-09 | 2024-02-15 | BATTERY MODULE HAVING A DELAMINATED FIRE-RETARDANT COATING LAYER TO OPEN A VENTILATION HOLE |
| JP2025530786A JP2025540742A (ja) | 2023-03-09 | 2024-02-15 | 耐火コーティング層が剥離してベントホールが開放されるバッテリーモジュール |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2023-0030912 | 2023-03-09 | ||
| KR1020230030912A KR20240137751A (ko) | 2023-03-09 | 2023-03-09 | 내화 코팅층이 탈리되어 벤팅홀이 개방되는 배터리 모듈 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024186189A1 true WO2024186189A1 (ko) | 2024-09-12 |
Family
ID=92675355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2024/095203 Ceased WO2024186189A1 (ko) | 2023-03-09 | 2024-02-15 | 내화 코팅층이 탈리되어 벤팅홀이 개방되는 배터리 모듈 |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4579915A4 (ko) |
| JP (1) | JP2025540742A (ko) |
| KR (1) | KR20240137751A (ko) |
| CN (1) | CN119487684A (ko) |
| WO (1) | WO2024186189A1 (ko) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190157636A1 (en) * | 2016-07-29 | 2019-05-23 | Apple Inc. | High-density battery pack |
| KR20200071545A (ko) * | 2018-12-11 | 2020-06-19 | 현대자동차주식회사 | 연료전지 시스템의 배기압력조절장치 |
| EP3937300A1 (en) * | 2020-02-28 | 2022-01-12 | Contemporary Amperex Technology Co., Limited | Explosion-proof valve, battery pack, and apparatus |
| KR20220169831A (ko) * | 2021-06-21 | 2022-12-28 | 주식회사 엘지에너지솔루션 | 가스 배출 경로를 개선한 배터리 팩 |
| KR20230024836A (ko) * | 2021-08-12 | 2023-02-21 | 주식회사 엘지에너지솔루션 | 안전성이 강화된 배터리 모듈 |
| KR20230030912A (ko) | 2021-08-26 | 2023-03-07 | 김준영 | 라멘교용 강합성 거더 및 이의 제작방법 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209401710U (zh) * | 2019-03-28 | 2019-09-17 | 宁德时代新能源科技股份有限公司 | 电池模组及电池包 |
| KR20220142279A (ko) * | 2021-04-14 | 2022-10-21 | 주식회사 엘지에너지솔루션 | 전지 모듈 및 이를 포함하는 전지 팩 |
| CN218535893U (zh) * | 2022-06-22 | 2023-02-28 | 巴斯夫欧洲公司 | 复合材料和应用其的壳体、电芯单体、电池模组、电池包 |
| KR20240053258A (ko) * | 2022-10-17 | 2024-04-24 | 주식회사 엘지에너지솔루션 | 전지 모듈 탑 커버 구조 |
-
2023
- 2023-03-09 KR KR1020230030912A patent/KR20240137751A/ko active Pending
-
2024
- 2024-02-15 WO PCT/KR2024/095203 patent/WO2024186189A1/ko not_active Ceased
- 2024-02-15 CN CN202480003322.3A patent/CN119487684A/zh active Pending
- 2024-02-15 JP JP2025530786A patent/JP2025540742A/ja active Pending
- 2024-02-15 EP EP24767475.7A patent/EP4579915A4/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190157636A1 (en) * | 2016-07-29 | 2019-05-23 | Apple Inc. | High-density battery pack |
| KR20200071545A (ko) * | 2018-12-11 | 2020-06-19 | 현대자동차주식회사 | 연료전지 시스템의 배기압력조절장치 |
| EP3937300A1 (en) * | 2020-02-28 | 2022-01-12 | Contemporary Amperex Technology Co., Limited | Explosion-proof valve, battery pack, and apparatus |
| KR20220169831A (ko) * | 2021-06-21 | 2022-12-28 | 주식회사 엘지에너지솔루션 | 가스 배출 경로를 개선한 배터리 팩 |
| KR20230024836A (ko) * | 2021-08-12 | 2023-02-21 | 주식회사 엘지에너지솔루션 | 안전성이 강화된 배터리 모듈 |
| KR20230030912A (ko) | 2021-08-26 | 2023-03-07 | 김준영 | 라멘교용 강합성 거더 및 이의 제작방법 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4579915A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2025540742A (ja) | 2025-12-16 |
| KR20240137751A (ko) | 2024-09-20 |
| EP4579915A1 (en) | 2025-07-02 |
| CN119487684A (zh) | 2025-02-18 |
| EP4579915A4 (en) | 2025-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022080908A1 (ko) | 전지 모듈 및 이를 포함하는 전지 팩 | |
| WO2021125469A1 (ko) | 전지 모듈 및 이를 포함하는 전지팩 | |
| WO2021201421A1 (ko) | 전지 모듈 및 이를 포함하는 전지 팩 | |
| WO2021201409A1 (ko) | 전지 모듈 및 이를 포함하는 전지 팩 | |
| WO2022158765A1 (ko) | 전지 모듈 이를 포함하는 전지 팩 | |
| WO2023239216A1 (ko) | 배터리 팩 및 이를 포함하는 자동차 | |
| WO2023128474A1 (ko) | 배터리 팩, 그리고 이를 포함하는 ess 및 자동차 | |
| WO2024186189A1 (ko) | 내화 코팅층이 탈리되어 벤팅홀이 개방되는 배터리 모듈 | |
| KR20240146998A (ko) | 안전성이 강화된 배터리 모듈 | |
| WO2024143754A1 (ko) | 배터리 모듈 및 이를 포함하는 배터리 팩 및 차량 | |
| WO2024186015A1 (ko) | 안전성이 강화된 배터리 모듈 | |
| WO2024191064A1 (ko) | 안전성이 강화된 배터리 모듈 | |
| WO2025170207A1 (ko) | 배터리 모듈, 이를 포함하는 배터리 팩 및 자동차 | |
| WO2025037786A1 (ko) | 안전성이 강화된 배터리 모듈 및 배터리 팩 | |
| WO2024253290A1 (ko) | 배터리 팩 그리고 이를 포함하는 자동차 | |
| WO2025058223A1 (ko) | 안전성이 강화된 배터리 모듈 및 배터리 팩 | |
| WO2023239218A1 (ko) | 배터리 팩 및 이를 포함하는 자동차 | |
| WO2025198120A1 (ko) | 배터리 모듈, 이를 포함하는 배터리 팩 및 자동차 | |
| WO2025028823A1 (ko) | 배터리 팩 및 이를 포함하는 자동차 | |
| WO2024253291A1 (ko) | 배터리 팩 그리고 이를 포함하는 자동차 | |
| WO2025164985A1 (ko) | 배터리 모듈, 이를 포함하는 배터리 팩 및 자동차 | |
| WO2025263712A1 (ko) | 배터리 모듈 및 배터리 팩 및 자동차 | |
| WO2025164984A1 (ko) | 배터리 모듈, 이를 포함하는 배터리 팩 및 자동차 | |
| WO2025211541A1 (ko) | 배터리 모듈, 이를 포함하는 배터리 팩 및 자동차 | |
| WO2025221097A1 (ko) | 배터리 모듈, 이를 포함하는 배터리 팩 및 자동차 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 24767475 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202480003322.3 Country of ref document: CN |
|
| WWP | Wipo information: published in national office |
Ref document number: 202480003322.3 Country of ref document: CN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2024767475 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 2024767475 Country of ref document: EP Effective date: 20250326 |
|
| ENP | Entry into the national phase |
Ref document number: 2025530786 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2025530786 Country of ref document: JP |
|
| WWP | Wipo information: published in national office |
Ref document number: 2024767475 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |