WO2025170261A1 - 배터리 모듈, 이를 포함하는 배터리 팩 및 자동차 - Google Patents
배터리 모듈, 이를 포함하는 배터리 팩 및 자동차Info
- Publication number
- WO2025170261A1 WO2025170261A1 PCT/KR2025/001338 KR2025001338W WO2025170261A1 WO 2025170261 A1 WO2025170261 A1 WO 2025170261A1 KR 2025001338 W KR2025001338 W KR 2025001338W WO 2025170261 A1 WO2025170261 A1 WO 2025170261A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery
- overflow prevention
- battery module
- thermally conductive
- conductive adhesive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- H01M50/20—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
-
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
-
- 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/668—Means for preventing spilling of liquid or electrolyte, e.g. when the battery is tilted or turned over
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
-
- 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
-
- 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, a battery pack including the same, and a vehicle.
- Commonly used secondary battery types today include lithium-ion batteries, lithium polymer batteries, nickel-cadmium batteries, nickel-metal hydride batteries, and nickel-zinc batteries.
- lithium-ion batteries lithium polymer batteries
- nickel-cadmium batteries nickel-metal hydride batteries
- nickel-zinc batteries When high output voltage is required, multiple battery cells are connected in series to form a battery module or battery pack. Furthermore, to increase charge/discharge capacity, multiple battery cells are connected in parallel to form a battery module or battery pack.
- a thermally conductive adhesive (e.g., a thermally conductive adhesive) may be applied to one side of the cell assembly in which the battery cells are stacked to cool the battery cells or secure the cell assembly.
- a thermally conductive adhesive e.g., a thermally conductive adhesive
- various problems may arise when the battery cells swell during the charge/discharge cycle.
- the entire battery cell of the cell assembly moves toward the outermost edge, while one side of the cell assembly that is in direct contact with the thermally conductive adhesive remains fixed by the cured thermally conductive adhesive. This can lead to damage in the portion of the cell case with relatively low elongation.
- the thermally conductive adhesive may damage the battery cell when swelling occurs. Furthermore, during this process, the battery cell may detach from the thermally conductive adhesive, which may degrade the heat dissipation performance of the battery cell.
- the present invention has been created to solve the above problems, and its purpose is to provide a battery module having an improved structure so that damage to battery cells can be minimized even when a swelling phenomenon occurs, and a battery pack and automobile including the same.
- a battery module includes: a cell assembly including a plurality of battery cells; a module case configured to accommodate the cell assembly; a thermally conductive adhesive interposed between the cell assembly and the module case and configured to fix the cell assembly; and an overflow prevention member provided between the cell assembly and the module case and configured to form a space in which the thermally conductive adhesive can be accommodated.
- the above overflow prevention member may be configured to accommodate the thermally conductive adhesive in the accommodation space and suppress the flow of the thermally conductive adhesive.
- the above battery cell is provided as a pouch-type battery cell, and is configured to be laminated face to face so that the side surface from which the electrode lead is not drawn faces downward, and the overflow prevention member can be configured to prevent the thermally conductive adhesive from overflowing from the side surface of the battery cell to a part other than the side surface of the battery cell along the interface extending from the side surface of the battery cell.
- the above thermally conductive adhesive may be configured to be interposed only at the bottom of the cell assembly to secure the lower portion of the cell assembly.
- the above-mentioned accommodation space is provided in multiple numbers, and the multiple accommodation spaces can be arranged on the module case along a horizontal direction.
- the above overflow prevention member may include a mesh pad configured in a mesh shape.
- the above overflow prevention member may include a plurality of overflow prevention pads configured to be spaced apart from each other so that the receiving space is formed in a spaced apart space.
- the above overflow prevention pad may be composed of a thermally conductive thermal pad.
- the above overflow prevention pad may be made of an adhesive material.
- the above overflow prevention pad may include a first pad configured to be spaced apart from each other along a first direction.
- the above first pad may be configured to face both longitudinal ends of the cell assembly.
- the above overflow prevention pad may include a second pad provided between the first pads and configured to be spaced apart from each other along a second direction orthogonal to the first direction.
- the above overflow prevention pad may be configured to be at least partially perforated, and the receiving space may be defined by the perforated portion of the overflow prevention pad.
- the above overflow prevention pad may have a guide portion configured to be inclined toward the receiving space.
- the present invention provides a battery pack characterized by including a battery module according to the present invention.
- the present invention provides an automobile characterized by including a battery module according to the present invention.
- a battery device including a battery cell i.e., a battery module or a battery pack
- a battery cell i.e., a battery module or a battery pack
- the cell stacking state in a battery module or battery pack comprising a plurality of battery cells in a stacked form, the cell stacking state can be stably maintained under normal conditions.
- damage to battery module components, such as battery cells can be prevented when swelling occurs.
- the problem of battery cells detaching from the thermally conductive adhesive due to swelling, thereby reducing heat dissipation, can be prevented. Accordingly, the cooling performance of the battery device can be consistently maintained.
- the cycle performance of a battery device can be improved.
- a battery device with an improved lifespan that can be stably used for a long period of time can be provided.
- the present invention may have various other effects, which will be described in each embodiment configuration, or an explanation of effects that can be easily inferred by a person skilled in the art will be omitted.
- Figure 2 is an exploded perspective view of a battery module according to one embodiment of the present invention.
- Fig. 3 is a cross-sectional view of a battery module according to one embodiment of the present invention.
- Fig. 3 may be a drawing illustrating cross-section I-I' of Fig. 2.
- FIG. 4 is a perspective view of an overflow prevention member applied to a battery module according to one embodiment of the present invention.
- FIG. 5 is a cross-sectional view of a battery module to which an overflow prevention member according to one embodiment of the present invention is applied.
- FIG. 6 is a drawing showing a stopper applied to a battery module according to one embodiment of the present invention.
- FIG. 7 is a perspective view of an overflow prevention member applied to a battery module according to another embodiment of the present invention.
- FIG. 8 is a cross-sectional view of a battery module to which an overflow prevention member is applied according to another embodiment of the present invention.
- FIG. 9 is a perspective view of an overflow prevention member applied to a battery module according to another embodiment of the present invention.
- FIG. 10 is a perspective view of an overflow prevention member applied to a battery module according to another embodiment of the present invention.
- FIG. 11 is a cross-sectional view of a battery module to which an overflow prevention member is applied according to another embodiment of the present invention.
- FIG. 13 is a drawing showing a guide portion applied to an overflow prevention pad of a battery module according to another embodiment of the present invention.
- the present invention includes various embodiments. For each embodiment, redundant descriptions of substantially identical or similar components will be omitted, and the differences will be described.
- the X-axis direction shown in the drawing may mean the left-right direction, i.e., the stacking direction of the battery cells
- the Y-axis direction may mean the front-back direction perpendicular to the X-axis direction on a horizontal plane (X-Y plane), i.e., the length direction of the battery cells
- the Z-axis direction may mean the up-down direction (vertical direction) perpendicular to both the X-axis direction and the Y-axis direction, i.e., the height direction of the battery cells.
- FIG. 1 is a perspective view of a battery module according to one embodiment of the present invention
- FIG. 2 is an exploded perspective view of a battery module according to one embodiment of the present invention
- FIG. 3 is a cross-sectional view of a battery module according to one embodiment of the present invention.
- FIG. 3 may be a cross-sectional view taken along line I-I' of FIG. 2.
- a battery module (10) includes a cell assembly (100), a module case (200), a thermally conductive adhesive (300), and an overflow prevention member (400).
- a cell assembly (100) may include one or more battery cells (110), particularly a plurality of battery cells (110).
- each battery cell (110) may refer to a single secondary battery or may refer to a battery group comprising multiple secondary batteries. In this specification, the description will be based on the assumption that a battery cell (110) represents a single secondary battery.
- a plurality of battery cells (100) may include an electrode assembly, a cell case that accommodates the electrode assembly, and an electrode lead (111) that is connected to the electrode assembly and extends outward from the cell case to function as an electrode terminal.
- the shape of the battery case can be configured in various ways, and depending on the shape of the battery case, the battery cell (110) can be classified into a pouch-shaped cell, a cylindrical cell, a square cell, etc. Since the types of these battery cells (110) were widely known at the time of filing of the present invention, a detailed description thereof will be omitted.
- the present invention can be applied to all types of secondary batteries known at the time of filing of the present invention, and is not limited to a specific type of secondary battery.
- a plurality of battery cells (110) may be configured in a form in which they are stacked in at least one direction.
- a plurality of battery cells (110) may be stacked in a form in which they are arranged in a horizontal direction, particularly in the left-right direction (X-axis direction).
- a plurality of battery cells (110) provided in the cell assembly (100) may be electrically connected to each other in series and/or in parallel through a bus bar (not illustrated) or the like.
- the module case (200) may be configured to accommodate a cell assembly (100).
- a receiving space may be formed in the module case (200), and the cell assembly (100) may be configured to be accommodated in the receiving space.
- the module case (200) may have a case body (210), a top plate (220), and an end plate (230) to define a receiving space. Then, the cell assembly (100) may be positioned in this limited receiving space.
- the module case (200) may be at least partially composed of metal and/or plastic materials.
- the module case (200) may include a case body (210) in a U-frame shape in which a lower plate (210a), a left plate, and a right plate (210b) are integrated with each other, and a top plate (220) and an end plate (230) may be configured to cover or seal the upper, front, and rear of the case body (210).
- various fastening methods such as welding, bonding, bolting, and hooking can be used to secure the connection between the top plate (220) and the end plate (230) and the case body (210).
- the module case (200) may be manufactured in a monoframe form in which the top plate (220) and the case body (210) are integrated with each other.
- the module case (200) may be configured in a form in which each plate is manufactured separately and then joined and fixed through welding or the like.
- the present invention is not limited to a specific material or form of the module case (200).
- the thermally conductive adhesive (300) may be interposed between the cell assembly (100) and the module case (200).
- the thermally conductive adhesive (300) may be provided between one side of the cell assembly (100), for example, the lower portion of the cell assembly (100) and the lower surface (210a) of the module case (200).
- the thermally conductive adhesive (300) may be configured to fix the cell assembly (100) to the module case (200).
- the thermally conductive adhesive (300) may include an adhesive component.
- the thermally conductive adhesive (300) may adhesively fix the lower side of the cell assembly (100) to the lower surface (210a) of the module case (200).
- the thermally conductive adhesive (300) may be configured to transfer heat between the cell assembly (100) and the module case (200).
- the battery cell (110) may generate heat during use, and if this heat is not properly discharged, the performance of the battery cell (110) cannot be stably guaranteed, and in severe cases, it may lead to thermal runaway, ignition, explosion, etc. of the battery cell.
- the heat generated in the battery cell (110) needs to be properly discharged to the outside through the module case (200).
- the thermally conductive adhesive (300) may ensure good heat transfer between the battery cell (110) and the module case (200), thereby stably securing cooling performance for the battery module (10).
- the thermally conductive adhesive (300) may include a material capable of transmitting heat.
- the thermally conductive adhesive (300) may be made of a resin material, and in this case, the thermally conductive adhesive (300) may be referred to as a thermal resin.
- the thermally conductive adhesive (300) may include various materials, such as urethane, silicone, and epoxy.
- the thermally conductive adhesive (300) may be expressed by other terms such as TIM (Thermal Interface Material), potting resin, etc., and as the material of the thermally conductive adhesive (300) of the battery module (10) according to the present invention, various thermally conductive adhesives or TIMs known at the time of filing of the present invention may be used.
- the thermally conductive adhesive (300) may be interposed between all battery cells (110) provided in the cell assembly (100) and the module case (200). That is, the thermally conductive adhesive (300) may be configured to be in direct contact with all battery cells (110) included in the cell assembly (100). According to this embodiment of the present invention, heat dissipation through the thermally conductive adhesive (300) can be achieved for all battery cells (110) included in the battery module (10). Therefore, the overall cooling performance of the battery module (10) can be further improved.
- the thermally conductive adhesive (300) may be applied to the lower surface (210a) of the module case (200) and cured before the cell assembly (100) is accommodated in the module case (200). If the cell assembly (100) is placed on the thermally conductive adhesive (300) that is not completely cured, the thermally conductive adhesive (300) may overflow to the side of the cell assembly (100), for example, the part where the electrode lead (111) is provided. If the thermally conductive adhesive (300) is cured in such a state that it overflows to the side of the cell assembly (100), one side of the cell assembly (100) that comes into contact with the overflowed thermally conductive adhesive (300) may be fixed. Accordingly, if a swelling phenomenon occurs in the battery cell (110), damage or breakage of the battery cell (110) may occur.
- the battery module (10) may include an overflow prevention member (400).
- the overflow prevention member (400) may be provided between the cell assembly (100) and the module case (200).
- the overflow prevention member (400) may be provided between the cell assembly (100) and the lower surface (210a) of the module case (200).
- the overflow prevention member (400) may be configured to form a receiving space (S) in which a thermally conductive adhesive (300) can be received.
- the overflow prevention member (400) is configured to have a predetermined thickness, an accommodation space (S) is formed inside, thereby preventing the injection amount of the thermally conductive adhesive (300) from overflowing.
- the overflow prevention member (400) may be configured to accommodate a thermally conductive adhesive (300) in the accommodation space (S) and to suppress the flow of the thermally conductive adhesive (300).
- the thermally conductive adhesive (300) may be configured to suppress the flow of the thermally conductive adhesive (300) to the outside of the cell assembly (100) along the interface of the battery cell (110).
- the battery cell (110) is provided as a pouch-type battery cell, and is configured to be stacked face to face so that the side surface from which the electrode lead (111) is not drawn faces downward, and the overflow prevention member (400) can be configured to prevent the thermally conductive thermally conductive adhesive (300) from overflowing to a part other than the side surface of the battery cell (110) along the interface extending from the side surface of the battery cell (110). That is, the thermally conductive thermally conductive adhesive (300) can be configured to be interposed only in the lower portion of the cell assembly (100) to fix the lower portion of the cell assembly (100).
- the overflow prevention member (400) may be configured to be electrically insulated.
- the overflow prevention member (400) may be made of a material that ensures flame retardant performance.
- the overflow prevention member (400) may be made of a material that satisfies flame retardancy rating UL-94 V0.
- a plurality of receiving spaces (S) may be provided.
- the plurality of receiving spaces (S) may be arranged on the module case (200) along the horizontal direction.
- the plurality of receiving spaces (S) may be arranged to be spaced apart from each other on the lower surface (210a) of the module case (200).
- the thermally conductive adhesive (300) can be accommodated even if the thermally conductive adhesive (300) overflows from any part.
- FIG. 4 is a perspective view of an overflow prevention member applied to a battery module according to one embodiment of the present invention
- FIG. 5 is a cross-sectional view of a battery module to which an overflow prevention member according to one embodiment of the present invention is applied.
- the stopper (500) may be made of any material that can block the thermally conductive adhesive (300) from the outside without limitation.
- the stopper (500) may include a resin material, but is not limited thereto.
- Fig. 7 is a perspective view of an overflow prevention member applied to a battery module according to another embodiment of the present invention
- Fig. 8 is a cross-sectional view of a battery module to which an overflow prevention member according to another embodiment of the present invention is applied
- Fig. 9 is a perspective view of an overflow prevention member applied to a battery module according to yet another embodiment of the present invention.
- the overflow prevention member (400) may include a plurality of overflow prevention pads (420).
- the plurality of overflow prevention pads (420) may be provided spaced apart from each other.
- the receiving space (S) may be defined as a space formed by the plurality of overflow prevention pads (420) being spaced apart from each other. Accordingly, the thermally conductive adhesive (300) may be applied to the receiving space (S) between the overflow prevention pads (420) through the dispenser (600).
- the overflow prevention pad (420) may be configured to transfer heat between the cell assembly (100) and the module case (200).
- the overflow prevention pad (420) may include a material capable of transferring heat.
- the overflow prevention pad (420) may be configured as a thermally conductive thermal pad.
- the thermal pad is a heat dissipation pad that controls heat generated from the battery cell (110) and can transfer the heat generated from the battery cell (110) to the outside.
- the overflow prevention pad (420) may be made of a material such as acrylic or silicone.
- the overflow prevention pad (420) can ensure good heat transfer between the battery cell (110) and the module case (200), thereby stably securing cooling performance for the battery module (10).
- the cell assembly (100) when the cell assembly (100) is placed on the overflow prevention pad (420), it may be helpful for the cell assembly (100) to be fixed to the overflow prevention pad (420), which may lead to an improvement in heat transfer performance through the overflow prevention pad (420).
- the thickness of the thermally conductive adhesive (300) filled in the receiving space (S) can be configured to correspond to the thickness of the overflow prevention pad (420).
- the thermally conductive adhesive (300) and the overflow prevention pad (420) can be configured to form a substantially flat plane.
- the overflow prevention pad (420) may include a first pad (421).
- a plurality of first pads (421) may be provided.
- the plurality of first pads (421) may be configured to be spaced apart from each other along a first direction.
- the first direction may be defined as the longitudinal direction of the battery cell (110) (Y-axis direction in the drawing).
- the first pad (421) may be configured in a plate shape.
- a plurality of first pads (421) may be configured in a plate shape and may be arranged parallel to each other along the first direction.
- two first pads (421) may be arranged in a lying plate shape and parallel to each other in the first direction.
- a receiving space (S) is provided between the two first pads (421), and a thermally conductive adhesive (300) may be applied to the receiving space (S) by a dispenser (600).
- the first pad (421) may be configured in the shape of a rod that extends long along a second direction orthogonal to the first direction.
- the second direction may be defined as the stacking direction of the battery cells (110) (X-axis direction in the drawing).
- five first pads (421) may be arranged in parallel in the first direction in a shape that extends long in the second direction.
- four receiving spaces (S) are provided between the five first pads (421), and the thermally conductive adhesive (300) may be applied to the receiving spaces (S) by a dispenser (600).
- the width (length in the first direction) of the first pad (421) may be designed in consideration of the volume of the receiving space (S) that prevents the thermally conductive adhesive (300) from overflowing.
- the length (length in the second direction) of the first pad (421) may be configured to correspond to the length in the left and right directions of the lower surface (210a) of the module case (200).
- the thermally conductive adhesive (300) can be more effectively suppressed from overflowing to the side portion of the cell assembly (100) where the electrode leads (111) are provided.
- the cell case of the battery cell (110) can be prevented from being damaged at the side portion of the cell assembly (100).
- FIG. 10 is a perspective view of an overflow prevention member applied to a battery module according to another embodiment of the present invention
- FIG. 11 is a cross-sectional view of a battery module to which an overflow prevention member is applied according to another embodiment of the present invention.
- the overflow prevention pad (420) may be configured in a grid shape.
- the overflow prevention pad (420) may include a second pad (422).
- the second pad (422) may be provided between the first pads (421). That is, the second pad (422) may be provided between the first pads (421) that are spaced apart from each other.
- the width (length in the first direction) of the second pad (422) may be configured to correspond to the distance at which the first pads (421) are spaced apart.
- the second pad (422) may be configured such that both sides in the first direction are in contact with the first pad (421).
- a plurality of second pads (422) may be provided.
- the plurality of second pads (422) may be configured to be spaced apart from each other along the second direction.
- An accommodation space (S) may be formed between adjacent second pads (422). Accordingly, the second pads (422) and the accommodation space (S) may be arranged to intersect each other between the first pads (421).
- four second pads (422) arranged along the second direction may be provided between adjacent first pads (421).
- three receiving spaces (S) may be provided between the four second pads (422), and a thermally conductive adhesive (300) may be applied to the receiving spaces (S) by a dispenser (600).
- the receiving space (S) is divided into a plurality of parts by the grid-shaped overflow prevention pad (420), the flowability of the thermally conductive adhesive (300) can be more reliably suppressed. Accordingly, the thermally conductive adhesive (300) can be prevented from overflowing to a part other than the side surface of the battery cell (110) along the interface extending from the side surface of the battery cell (110).
- FIG. 12 is a perspective view of an overflow prevention member applied to a battery module according to another embodiment of the present invention.
- the first pad (421) and the second pad (422) may be configured in an integrated form. More specifically, the overflow prevention pad (420) may be configured to be at least partially perforated. In this case, the receiving space (S) may be defined by the perforated portion of the overflow prevention pad (420).
- the overflow prevention pad (420) is punched to form the receiving space (S) without separately manufacturing the first pad (421) and the second pad (422), thereby reducing costs and time. Accordingly, productivity in manufacturing the battery module (10) can be improved.
- FIG. 13 is a drawing showing a guide portion applied to an overflow prevention pad of a battery module according to another embodiment of the present invention.
- the overflow prevention pad (420) may be provided with a guide portion (420a).
- the guide portion (420a) may be configured to guide the thermally conductive adhesive (300) toward the receiving space (S).
- the guide portion (420a) may be configured to be inclined toward the receiving space (S).
- the guide portion (420a) may be provided on at least one side of the overflow prevention pad (420).
- a plurality of overflow prevention pads (420) may be arranged along the first direction (the Y-axis direction of FIG. 13), and the guide portion (420a) may be provided on the side where the plurality of overflow prevention pads (420) face each other.
- the thermally conductive adhesive (300) when a thermally conductive adhesive (300) is applied, the thermally conductive adhesive (300) can be guided along the guide portion (420a) to the receiving space (S) and stored therein. As a result, the thermally conductive adhesive (300) can be more effectively prevented from leaking out of the receiving space (S) or the overflow prevention pad (420).
- the thermally conductive adhesive (300) and the overflow prevention member (400) may be positioned on other sides, such as the upper side of the battery module (10).
- the thermally conductive adhesive (300) and the overflow prevention member (400) may be positioned on two or more sides of the battery module (10).
- the thermally conductive adhesive (300) and the overflow prevention member (400) may be applied to the upper side and the lower side of the cell assembly (100), respectively.
- Fig. 14 is a perspective view schematically showing the configuration of a battery pack according to one embodiment of the present invention.
- a battery pack (1) according to one embodiment of the present invention may include one or more battery modules (10) according to one embodiment of the present invention as described above.
- the battery pack (1) according to the present invention may further include a pack case (2) for accommodating a BMS (Battery Management System), a current sensor, a fuse, and the like for integrated control of charging and discharging of one or more battery modules, and the above-described components.
- BMS Battery Management System
- the battery pack (1) according to the present invention may include the battery module (10) according to the present invention, but may not include a separate pack case (2), and may be configured such that the module case (200) of the battery module (10) functions as the pack case (2).
- components of the battery pack such as a BMS, a bus bar, and a relay, may be included inside the module case (200).
- a battery pack of this type is also called a cell-to-pack (CTP) in that the battery cells (110) are directly stored in the pack case (2).
- CTP cell-to-pack
- an overflow prevention member (400) is provided on the inner surface, for example, the bottom surface, of the housing, which is a pack case (2) and a module case (200), so that the thermally conductive adhesive (300) can be prevented from overflowing.
- Figure 15 is a schematic perspective view of a vehicle according to one embodiment of the present invention.
- a vehicle (3) according to an embodiment of the present invention may include one or more battery packs (1) according to an embodiment of the present invention or battery modules (10) according to an embodiment of the present invention.
- the vehicle (3) according to the present invention may be, for example, an electric vehicle, a hybrid vehicle, or a plug-in hybrid vehicle.
- the vehicle (3) includes a four-wheel vehicle and a two-wheel vehicle.
- the vehicle (3) may operate by receiving power from a battery pack (1) or a battery module (10) according to an embodiment of the present invention.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Aviation & Aerospace Engineering (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims (17)
- 복수 개의 배터리 셀을 포함하는 셀 어셈블리;상기 셀 어셈블리를 수용하도록 구성되는 모듈 케이스;상기 셀 어셈블리와 상기 모듈 케이스 사이에 개재되어 상기 셀 어셈블리를 고정시키도록 구성되는 열전도성 접착제; 및상기 셀 어셈블리와 상기 모듈 케이스 사이에 구비되어 상기 열전도성 접착제가 수용될 수 있는 공간을 형성하도록 구성되는 넘침 방지 부재를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 넘침 방지 부재는 상기 수용 공간에 상기 열전도성 접착제를 수용하여 상기 열전도성 접착제의 흐름성을 억제하도록 구성되는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 배터리 셀은 파우치형 배터리 셀로 마련되어, 전극 리드가 인출되지 않은 측면부가 하방을 향하도록 면대면 적층되어 구성되고,상기 넘침 방지 부재는 상기 열전도성 접착제가 상기 배터리 셀의 상기 측면부로부터 이어지는 계면을 따라 상기 배터리 셀의 측면부 이외의 부분으로 흘러넘치지 않도록 구성된 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 열전도성 접착제는 상기 셀 어셈블리의 저부에만 개재되어 상기 셀 어셈블리의 하부를 고정시키도록 구성되는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 수용 공간은 복수 개로 구비되고, 복수 개의 상기 수용 공간은 수평 방향을 따라 상기 모듈 케이스 상에 배치되는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 넘침 방지 부재는메쉬 형상으로 구성되는 메쉬 패드를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 넘침 방지 부재의 양측에 구비되는 스토퍼를 더 포함하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 넘침 방지 부재는상호 이격되어 이격된 공간에 상기 수용 공간이 형성되도록 구성되는 복수 개의 넘침 방지 패드를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제8항에 있어서,상기 넘침 방지 패드는 열전도성 써멀 패드로 구성되는 것을 특징으로 하는 배터리 모듈.
- 제8항에 있어서,상기 넘침 방지 패드는 점착성을 가지는 재질로 마련되는 것을 특징으로 하는 배터리 모듈.
- 제8항에 있어서,상기 넘침 방지 패드는제1 방향을 따라 상호 이격되도록 구성되는 제1 패드를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제11항에 있어서,상기 제1 패드는 상기 셀 어셈블리의 길이 방향 양측 말단부와 마주하도록 구성되는 것을 특징으로 하는 배터리 모듈.
- 제12항에 있어서,상기 넘침 방지 패드는상기 제1 패드 사이에 구비되어 상기 제1 방향과 직교하는 제2 방향을 따라 상호 이격되도록 구성되는 제2 패드를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제8항에 있어서,상기 넘침 방지 패드는 적어도 부분적으로 타공되어 구성되고,상기 수용 공간은 상기 넘침 방지 패드의 타공된 부분에 의해 정의되는 것을 특징으로 하는 배터리 모듈.
- 제8항에 있어서,상기 넘침 방지 패드는상기 수용 공간을 향해 경사지게 구성되는 가이드부를 구비하는 것을 특징으로 하는 배터리 모듈.
- 제1항 내지 제15항 중 어느 한 항에 따른 배터리 모듈을 포함하는 배터리 팩.
- 제1항 내지 제15항 중 어느 한 항에 따른 배터리 모듈을 포함하는 자동차.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202580002616.9A CN121128002A (zh) | 2024-02-07 | 2025-01-23 | 电池模块以及包括该电池模块的电池组和车辆 |
| EP25752309.2A EP4726886A1 (en) | 2024-02-07 | 2025-01-23 | Battery module, and battery pack and vehicle including same |
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| KR1020240019193A KR20250122938A (ko) | 2024-02-07 | 2024-02-07 | 배터리 모듈, 이를 포함하는 배터리 팩 및 자동차 |
| KR10-2024-0019193 | 2024-02-07 |
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| KR20170107798A (ko) * | 2016-03-16 | 2017-09-26 | 주식회사 엘지화학 | 배터리 모듈, 이러한 배터리 모듈을 포함하는 배터리 팩 및 이러한 배터리 팩을 포함하는 자동차 |
| KR20200004202A (ko) * | 2018-07-03 | 2020-01-13 | 주식회사 엘지화학 | 배터리 모듈 |
| KR20210064934A (ko) * | 2019-11-26 | 2021-06-03 | 주식회사 엘지에너지솔루션 | 배터리 모듈 |
| KR20210094924A (ko) * | 2020-01-22 | 2021-07-30 | 주식회사 엘지에너지솔루션 | 배터리 모듈 |
| KR20220132374A (ko) * | 2021-03-23 | 2022-09-30 | (주)엔에스 | 이차전지 모듈 및 이를 포함하는 이차전지 팩 |
| KR20240019193A (ko) | 2021-05-14 | 2024-02-14 | 안정근 | 미끄럼 방지용 신발 깔창 |
-
2024
- 2024-02-07 KR KR1020240019193A patent/KR20250122938A/ko active Pending
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2025
- 2025-01-23 WO PCT/KR2025/001338 patent/WO2025170261A1/ko active Pending
- 2025-01-23 CN CN202580002616.9A patent/CN121128002A/zh active Pending
- 2025-01-23 EP EP25752309.2A patent/EP4726886A1/en active Pending
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| KR20170107798A (ko) * | 2016-03-16 | 2017-09-26 | 주식회사 엘지화학 | 배터리 모듈, 이러한 배터리 모듈을 포함하는 배터리 팩 및 이러한 배터리 팩을 포함하는 자동차 |
| KR20200004202A (ko) * | 2018-07-03 | 2020-01-13 | 주식회사 엘지화학 | 배터리 모듈 |
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| KR20240019193A (ko) | 2021-05-14 | 2024-02-14 | 안정근 | 미끄럼 방지용 신발 깔창 |
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| KR20250122938A (ko) | 2025-08-14 |
| EP4726886A1 (en) | 2026-04-15 |
| CN121128002A (zh) | 2025-12-12 |
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