WO2025023671A1 - 배터리 셀 어셈블리 및 이를 포함하는 배터리 팩 - Google Patents
배터리 셀 어셈블리 및 이를 포함하는 배터리 팩 Download PDFInfo
- Publication number
- WO2025023671A1 WO2025023671A1 PCT/KR2024/010529 KR2024010529W WO2025023671A1 WO 2025023671 A1 WO2025023671 A1 WO 2025023671A1 KR 2024010529 W KR2024010529 W KR 2024010529W WO 2025023671 A1 WO2025023671 A1 WO 2025023671A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery cell
- busbar
- battery
- cooling plate
- cell block
- 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
- 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
- H01M50/20—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
- H01M10/61—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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- 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
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
-
- 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 assembly and a battery pack including the battery cell assembly.
- Secondary batteries unlike primary batteries, can be charged and discharged multiple times. Secondary batteries are widely used as energy sources for various wireless devices such as handsets, laptops, and wireless vacuum cleaners. As secondary batteries are applied to mobility fields such as BEVs (battery electric vehicles), research is being conducted to increase the battery capacity and energy density of secondary batteries, as well as to reduce damage caused by heat generation in secondary batteries to increase the reliability of secondary batteries.
- BEVs battery electric vehicles
- the technical problem to be solved by the present invention relates to a battery cell assembly and a battery pack including the battery cell assembly.
- the technical idea of the present invention provides a battery cell assembly including a cell block including a plurality of battery cells; a bus bar connected to electrode leads of the cell block; a bus bar frame having the bus bar mounted thereon and having an accommodation space accommodating a portion of the bus bar; and a thermally conductive filler material at least partially filling the accommodation space of the bus bar frame and in contact with the bus bar.
- the device further comprises a cooling plate disposed on the cell block and in contact with the thermally conductive filler.
- the busbar frame includes a slit at a lower side of the receiving space and an opening at an upper side of the receiving space, the busbar is inserted into the receiving space of the busbar frame through the slit of the busbar frame, and the first portion of the cooling plate is inserted into the receiving space of the busbar frame through the opening of the busbar frame.
- At least a portion of the first portion of the cooling plate is characterized by being embedded in the thermally conductive filler.
- the cooling plate is coupled to an upper surface of the cell block, and the busbar frame is coupled to one side of the cell block.
- the cell block further comprises another busbar connected to another electrode lead, wherein the thermally conductive filler is characterized in that it is in contact with the other busbar.
- the thermally conductive filler is characterized by including: a first material layer including silicon; and a second material layer laminated on the first material layer and including a thermally conductive resin.
- the busbar is characterized as being an inter-busbar connecting different electrode leads of the cell block or a terminal busbar electrically connected to an external electrical device.
- a battery pack including: a pack housing; and a plurality of battery cell assemblies mounted on the pack housing and arranged in a first direction; wherein each of the plurality of battery cell assemblies includes: a cell block including a plurality of battery cells; a cooling plate on the cell block; a plurality of bus bars connected to different electrode leads of the cell block; a bus bar frame including a lower portion on which the plurality of bus bars are mounted and an upper portion having a receiving space for receiving a portion of each of the plurality of bus bars and a first portion of the cooling plate; and a thermally conductive filler that at least partially fills the receiving space of the bus bar frame and is configured to contact the plurality of bus bars and the cooling plate to thermally couple the plurality of bus bars to the cooling plate.
- the busbar frame includes a plurality of slits on a lower side of the receiving space and an opening on an upper side of the receiving space, the plurality of busbars are each inserted into the receiving space of the busbar frame through a corresponding slit among the plurality of slits, and the first portion of the cooling plate is inserted into the receiving space of the busbar frame through the opening of the busbar frame.
- the plurality of bus bars are arranged in a first direction, and the first portion of the cooling plate is characterized in that it extends continuously in the first direction and is in continuous contact with the thermally conductive filler.
- the cooling plate is coupled to an upper surface of the cell block, and the busbar frame is coupled to one side of the cell block.
- the device comprises a lower housing for accommodating the plurality of battery cell assemblies; and a top plate coupled to the lower housing to cover the plurality of battery cell assemblies, wherein the plurality of battery cell assemblies are supported by being suspended from the top plate.
- the plurality of battery cell assemblies are spaced apart from the bottom wall of the lower housing, and a space is formed between each of the plurality of battery cell assemblies and the bottom wall of the lower housing.
- the plurality of battery cell assemblies are each characterized by including a cell block in which pouch-type battery cells are stacked.
- the busbars are thermally coupled to the cooling plate through a thermally conductive filler, thereby improving the cooling efficiency of the busbars. Accordingly, thermal damage to the busbars can be prevented, and the reliability of the battery cell assembly can be improved.
- FIG. 1 is a perspective view illustrating a battery cell assembly according to exemplary embodiments of the present invention.
- FIG. 2 is a side view showing a portion of a configuration of a battery cell assembly according to exemplary embodiments of the present invention.
- FIG. 3 is a cross-sectional view showing a portion of a battery cell assembly according to exemplary embodiments of the present invention.
- FIG. 4 is a plan view showing a portion of a battery cell assembly according to exemplary embodiments of the present invention.
- FIG. 5 is a cross-sectional view showing a portion of a battery cell assembly according to exemplary embodiments of the present invention.
- FIG. 6 is a cross-sectional view showing a battery pack according to exemplary embodiments of the present invention.
- FIG. 7 is a schematic diagram showing an electric vehicle equipped with a battery pack according to exemplary embodiments of the present invention.
- FIGS. 1 to 4 are drawings showing a battery cell assembly (100) according to exemplary embodiments of the present invention, wherein FIG. 1 is a perspective view showing a battery cell assembly (100), FIG. 2 is a side view showing a part of the configuration of the battery cell assembly (100), FIG. 3 is a cross-sectional view showing a part of the configuration of the battery cell assembly (100), and FIG. 4 is a plan view showing a part of the configuration of the battery cell assembly (100).
- a battery cell assembly (100) may include a cell block (110), a case (120) having a cooling plate (121), a bus bar (130), a bus bar frame (140), and a thermally conductive filler (150).
- the cell block (110) may include a plurality of battery cells (111).
- Each battery cell (111) is a basic unit of a lithium ion battery, i.e., a secondary battery.
- Each battery cell (111) may include an electrode assembly, an electrolyte, and a case.
- the electrode assembly built into the case may include a cathode, an anode, and a separator interposed between the cathode and the anode.
- the electrode assembly may be either a jelly-roll type or a stack type depending on the assembly form.
- the jelly-roll type electrode assembly may include a winding structure of the cathode, the anode, and the separator interposed therebetween.
- the stack type electrode assembly may include a plurality of sequentially stacked cathodes, a plurality of cathodes, and a plurality of separators interposed therebetween.
- the cathode may include a cathode current collector and a cathode active material.
- the anode may include a cathode current collector and an anode active material.
- a plurality of battery cells (111) may be connected in series and/or in parallel.
- a plurality of battery cells (111) may be connected in series with each other.
- a plurality of battery cells (111) may also be connected in parallel with each other.
- a set of two or more battery cells (111) connected in parallel with each other is defined as a bank
- one bank composed of two or more battery cells (111) connected in parallel with each other and another bank composed of two or more battery cells (111) connected in parallel with each other may be connected in series.
- An individual battery cell (111) may correspond to a pouch-type battery cell, a cylindrical battery cell, or a square battery cell.
- the electrode assembly of the pouch-type battery cell is housed in a pouch case including an aluminum laminate sheet.
- the electrode assembly of the cylindrical battery cell is housed in a cylindrical metal can.
- the electrode assembly of the square battery cell is housed in a square metal can.
- the battery cell assembly (100) may be a battery module having a module case surrounding the upper, lower, left, and right sides of the cell block (110), or may be a device having a form in which part or all of the module case is removed.
- each battery cell (111) corresponds to a pouch-type battery cell, and a plurality of battery cells (111) in one battery cell assembly (100) may be stacked one on another in a first direction (X direction).
- the plurality of battery cells (111) correspond to pouch-type battery cells, each of which has a length along the first direction (X direction) smaller than a length along the second direction (Y direction), and the plurality of battery cells (111) may be stacked in the first direction (X direction).
- an individual battery cell assembly (100) may include a single cell block (110).
- an individual battery cell assembly (100) may include a plurality of sub-cell blocks arranged in a second direction (Y-direction), and each of the plurality of sub-cell blocks may include a plurality of battery cells (111) stacked in a first direction (X-direction).
- an individual battery cell assembly (100) may include two sub-cell blocks arranged in the second direction (Y-direction).
- the cell block (110) When viewed from a plane, the cell block (110) may have a rectangular shape.
- the cell block (110) may have first and second sides that are opposite to each other in a first direction (X direction), front and back sides that are opposite to each other in a second direction (Y direction), and upper and lower surfaces that are opposite to each other in a third direction (Z direction).
- the busbar frame (140) may be arranged on the front and rear sides of the cell block (110), respectively.
- a plurality of busbars (130) may be mounted on the busbar frame (140) on the front side of the cell block (110), and a plurality of busbars (130) may be mounted on the busbar frame (140) on the rear side of the cell block (110).
- the busbar frame (140) may support electrode leads (119) of the cell block (110).
- the electrode leads (119) may include a positive lead and a negative lead provided on each of a plurality of battery cells (see 111 of FIG. 6).
- the battery cell assembly (100) may include end plates (171) for covering the busbar frame (140) on the front side of the cell block (110) and the busbar frame (140) on the rear side of the cell block (110).
- the busbar frame (140) may include an insulating material.
- the busbar frame (140) may include a foamable refractory paint.
- the foamable refractory paint may include a dry coating layer that foams when exposed to heat.
- An insulating layer e.g., a carbon layer having a volume several tens of times that of the dry coating layer may be formed by foaming the dry coating layer.
- the insulating layer may delay heat transfer to a protected object (e.g., a plurality of battery cells (111)) for a certain period of time.
- the busbar (130) may be connected to the electrode lead (119) of the battery cell (111).
- the busbar (130) may be connected to the electrode lead (119) of the battery cell (111) by welding.
- the individual busbar (130) may be connected to the electrode leads (119) connected to different battery cells (111) belonging to the cell block (110), and may be an inter-busbar for electrically connecting different battery cells (111).
- the individual busbar (130) may be a terminal-busbar for electrically connecting the battery cell assembly (100) with other external electrical devices.
- the case (120) can accommodate the cell block (110).
- the case (120) can surround the first side, the second side, and the top surface of the cell block (110).
- the case (120) can include side walls for covering the first side and the second side of the cell block (110), and a top wall for covering the top surface of the cell block (110).
- the case (120) can be coupled to busbar frames (140) on the front and rear surfaces of the cell block (110).
- the case (120) may include a cooling plate (121) forming an upper wall of the cell block (110).
- the cooling plate (121) may be attached to an upper surface of the cell block (110) and may be thermally coupled to the cell block (110).
- the cooling plate (121) may be attached to an upper surface of the cell block (110) through a thermal interface material (TIM) layer.
- the cooling plate (121) may have a cooling channel (1211) configured to allow a cooling fluid to flow.
- a cooling fluid provided from the outside of the battery cell assembly (100) may flow into the cooling channel (1211) through an inlet of the cooling channel (1211), flow along the cooling channel (1211), and then flow out to the outside through an outlet of the cooling channel (1211). Cooling of the battery cell assembly (100) can be performed while the cooling fluid flows along the cooling channel (1211).
- the cooling plate (121) can be manufactured by bonding two plates, and the cooling channel (1211) can include a space defined between the two plates.
- the busbar frame (140) may include a lower portion (141) on which busbars (130) are mounted, and an upper portion (145) having a receiving space (1451) in which a portion of each of the busbars (130) is received.
- the upper portion (145) of the busbar frame (140) may be closer to the cooling plate (121) than the lower portion (141).
- the upper portion (145) of the busbar frame (140) and the lower portion (141) of the busbar frame (140) may form an integral body.
- Slits (1453) may be provided at the lower side of the receiving space (1451) of the busbar frame (140), and an opening (1452) may be provided at the upper side of the receiving space (1451) of the busbar frame (140).
- the receiving space (1451) of the busbar frame (140) may be in communication with the slits (1453) and the opening (1452).
- Each of the slits (1453) of the busbar frame (140) may provide a passage through which one busbar (130) passes. When viewed in a plan view, one slit (1453) may have a substantially similar dimension to one busbar (130).
- Each busbar (130) is inserted into a corresponding slit (1453), and an upper portion of each busbar (130) may be received within the receiving space (1451) of the busbar frame (140).
- a first portion (1213) of the cooling plate (121) can extend into an accommodation space (1451) of the busbar frame (140) through an opening (1452) of the busbar frame (140).
- the busbars (130) can be arranged in a first direction (X-direction), and the first portion (1213) of the cooling plate (121) can extend linearly and continuously in the first direction (X-direction).
- a part of the first portion (1213) of the cooling plate (121) can be embedded in a thermally conductive filler (150).
- the first portion (1213) of the cooling plate (121) can continuously contact the thermally conductive filler (150) in the first direction (X-direction).
- the first portion (1213) of the cooling plate (121) may extend obliquely from a portion of the cooling plate (121) facing the upper surface of the cell block (110).
- the first portion (1213) of the cooling plate (121) may include a portion that is bent downward from a portion of the cooling plate (121) facing the upper surface of the cell block (110) or a portion of the cooling plate (121) that is in contact with the uppermost end of the busbar frame (140).
- a thermally conductive filler (150) may be provided within the receiving space (1451) of the busbar frame (140).
- the thermally conductive filler (150) may at least partially fill the receiving space (1451) of the busbar frame (140).
- the thermally conductive filler (150) may be thermally conductive but electrically insulator.
- the thermally conductive filler (150) may include a thermally conductive resin.
- the thermally conductive filler (150) may include a single material layer or a plurality of material layers.
- the thermally conductive filler (150) may also be referred to as a thermally conductive material layer.
- the thermally conductive filler (150) can be configured to thermally couple the busbars (130) to the cooling plate (121).
- the thermally conductive filler (150) can contact the busbars (130) inserted into the receiving space (1451) of the busbar frame (140) through the slits (1453) of the busbar frame (140), and can also contact the first portion (1213) of the cooling plate (121) inserted into the receiving space (1451) of the busbar frame (140) through the openings (1452) of the busbar frame (140).
- the thermally conductive filler (150) can provide a thermal conduction path for thermally connecting each of the busbars (130) to the cooling plate (121).
- the busbars (130) are thermally coupled to the cooling plate (121) through the thermally conductive filler (150), thereby improving the cooling efficiency of the busbars (130). Accordingly, thermal damage to the busbars (130) can be prevented, and the reliability of the battery cell assembly (100) can be improved.
- FIG. 5 is a cross-sectional view showing a portion of a battery cell assembly (100A) according to exemplary embodiments of the present invention.
- the battery cell assembly (100A) shown in FIG. 5 will be described with a focus on differences from the battery cell assembly (100) described with reference to FIGS. 1 to 4.
- the thermally conductive filler (150A) may include a first material layer (151) and a second material layer (152) laminated on the first material layer (151).
- the first material layer (151) and the second material layer (152) may include different materials.
- the first material layer (151) may include silicone and may function as a sealing layer for sealing a bottom portion of the receiving space (1451) of the busbar frame (140).
- the second material layer (152) may include a thermally conductive resin and may provide a thermally conductive path for thermally coupling each of the busbars (130) to the cooling plate (121).
- Fig. 6 is a cross-sectional view showing a battery pack (500) according to exemplary embodiments of the present invention.
- a battery pack 500
- a battery pack (500) may include a pack housing (510) and a plurality of battery cell assemblies (100) mounted on the pack housing (510).
- a plurality of battery cell assemblies (100) may be mounted in the pack housing (510) so as to be arranged in a first direction (X direction).
- the battery pack (500) is exemplified as including two battery cell assemblies (100) arranged in the first direction (X direction), but is not limited thereto.
- the battery pack (500) may include three or more battery cell assemblies (100) arranged in the first direction (X direction).
- the pack housing (510) may include a lower housing (511) having an accommodation space in which a plurality of battery cell assemblies (100) are accommodated, and a top plate (515) coupled on the lower housing (511) to cover the lower housing (511) in which the plurality of battery cell assemblies (100) are accommodated.
- the accommodation space of the lower housing (511) may be defined by a bottom wall facing a bottom surface of a cell block (110) of an individual battery cell assembly (100), and a side wall positioned on a periphery of the bottom wall.
- the top plate (515) is a pack lid that covers the plurality of battery cell assemblies (100).
- a plurality of battery cell assemblies (100) may be fastened and supported to corresponding support blocks (5111) among the support blocks (5111) of the lower housing (511), respectively.
- a fastening portion (127) of the case (120) is provided on one side of each battery cell assembly (100), and the fastening portion (127) may be fastened and supported to corresponding support blocks (5111) among the support blocks (5111) of the lower housing (511) through a fastening member such as a bolt (BT).
- a plurality of battery cell assemblies (100) may each be suspended and supported from a top plate (515). Individual battery cell assemblies (100) may be coupled to a lower surface of the top plate (515).
- a free volume may be provided between the lower surface of each battery cell assembly (100) and the bottom wall of the lower housing (511).
- the free volume (FV) may be understood as a space formed by the bottom wall of the lower housing (511) and each battery cell assembly (100) being spaced apart from each other.
- the present invention is an inverted support structure in which individual battery cell assemblies (100) are suspended and supported from a top plate (515).
- a free volume (FV) is provided between the bottom of the battery pack (500) (i.e., the bottom wall of the lower housing (511)) and the individual battery cell assemblies (100).
- FV free volume
- gas and flame generated in a thermal runaway situation can move.
- the free volume (FV) becomes a venting passage through which high-temperature gas and flame can move.
- the free volume (FV) has an empty space between each of the plurality of battery cell assemblies (100) and the lower housing (511), and when the lower housing (511) is deformed toward the battery cell assembly (100) due to an impact applied to the lower part of the vehicle, the free volume (FV) can be utilized as a space to freely allow the deformation of the lower housing (511) to a certain extent. Another structure may not be installed in the free volume (FV).
- a structure that supports the battery cell assembly (100), etc. may be installed partially within the free volume (FV).
- a space sufficient to allow deformation of the lower housing (511) must be provided between the battery cell assembly (100) and the lower housing (511).
- the height of the free volume (FV) and the distance between the bottom wall of the lower housing (511) and the battery cell assembly (100) can be set sufficiently to absorb external impact.
- the height of the free volume (FV) can be determined in consideration of the dimensions and rigidity of the vehicle frame, the dimensions and rigidity of the lower housing (511), the dimensions of the battery pack (500), the amount of gas generated and the discharge speed during thermal runaway, etc. For example, when the thickness or rigidity of the bottom wall of the vehicle frame or the lower housing (511) is relatively large, at least one of the size and height of the free volume (FV) can be relatively reduced.
- the thickness or rigidity of the bottom wall of the vehicle frame or the lower housing (511) is relatively small, the possibility of deformation of the bottom wall of the lower housing (511) is large, and therefore, in order to protect the battery cell assembly (100), at least one of the size and height of the free volume (FV) can be relatively increased.
- the size of the battery pack (500) is relatively large in terms of the battery pack (500) specifications, a relatively large free volume (FV) can be secured.
- the height of the free volume (FV) that can be secured may be relatively small, and the thickness and rigidity of the bottom wall of the lower housing (511) may need to be relatively increased.
- the size and height of the free volume (FV) can be determined by considering the amount of gas generated and the discharge speed.
- the maximum height of the free volume (FV) may be determined according to the degree of damage to the battery cell (111) included in the battery cell assembly (100). For example, if the damage tolerance of the battery cell (111) is 1 mm, the free volume (FV) may be determined so that the battery cell (111) is not deformed more than 1 mm when the lower housing (511) is deformed and presses the lower surface of the battery cell (111). In this case, the deformation amount of the lower housing (511) may vary depending on the thickness or rigidity of the lower housing (511). Therefore, the size or height of the free volume (FV) may be determined by considering both the damage tolerance of the battery cell (111) and the thickness and rigidity of the lower housing (511).
- each battery cell assembly (100) may be closely coupled with the lower surface of the top plate (515). If there is a space between the battery cell assembly (100) and the top plate (515), high-temperature gas may be introduced into the space between one battery cell assembly (100) and the top plate (515) during thermal runaway, and heat and flame may be transmitted to another adjacent battery cell assembly (100). In addition, heat and flame may be transmitted to the top plate (515), and there is a concern that the cabin room located above the top plate (515) may be affected. Therefore, by closely coupling the upper surface of each battery cell assembly (100) and the lower surface of the top plate (515), gas or flame generated inside the battery pack (500) may be guided to the free volume (FV).
- FV free volume
- FIG. 7 is a schematic diagram showing an electric vehicle (1000) equipped with a battery pack (1100) according to exemplary embodiments of the present invention.
- the battery pack (1100) may include, for example, the battery pack (500) described with reference to Fig. 6.
- the battery cell assemblies are installed at the bottom of the housing of the battery pack.
- the battery cell assemblies (100) of the battery pack (1100) have a structure in which they are suspended and supported from the top plate (1120) of the housing. That is, since there is no space between the battery cell assembly (100) and the top plate (1120), the gas generated from the battery cell assembly (100) can be prevented from being transmitted to the cabin room on the upper part of the vehicle. The gas is guided to the free volume (see FV of FIG. 6) provided at the lower side of the housing of the battery cell assembly (100) and the battery pack (1100).
- the gas can flow through the free volume (FV) and be discharged to the lower side of the vehicle through the gas exhaust unit installed in the battery pack (1100).
- a free volume (FV) is provided between the battery cell assembly (100) and the housing within the battery pack (1100), the battery cell assembly (100) can be prevented from being damaged even if the housing is deformed.
- the battery pack (1100) and the electric vehicle (1000) equipped therewith can enhance passenger safety.
- the battery cell assembly (100), which is a core component can be protected, and the durability of the battery pack (1100) and the electric vehicle (1000) can be improved.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
Claims (15)
- 복수의 배터리 셀을 포함하는 셀 블록;상기 셀 블록의 전극 리드에 연결된 버스바;상기 버스바가 탑재되고, 상기 버스바의 일부를 수용하는 수용 공간을 가진 버스바 프레임; 및상기 버스바 프레임의 상기 수용 공간을 적어도 부분적으로 채우고, 상기 버스바에 접촉된 열전도성 충전재;를 포함하는 배터리 셀 어셈블리.
- 제 1 항에 있어서,상기 셀 블록 상에 있고 상기 열전도성 충전재에 접촉된 냉각 플레이트를 더 포함하는 것을 특징으로 하는 배터리 셀 어셈블리.
- 제 2 항에 있어서,상기 버스바 프레임은 상기 수용 공간의 하측에 있는 슬릿 및 상기 수용 공간의 상측에 있는 개구를 포함하고,상기 버스바는 상기 버스바 프레임의 상기 슬릿을 통해 상기 버스바 프레임의 상기 수용 공간으로 삽입되고,상기 냉각 플레이트의 제1 부분은 상기 버스바 프레임의 상기 개구를 통해 상기 버스바 프레임의 상기 수용 공간으로 삽입된 것을 특징으로 하는 배터리 셀 어셈블리.
- 제 3 항에 있어서,상기 냉각 플레이트의 상기 제1 부분의 적어도 일부는 상기 열전도성 충전재에 매립된 것을 특징으로 하는 배터리 셀 어셈블리.
- 제 2 항에 있어서,상기 냉각 플레이트는 상기 셀 블록의 상면에 결합되고,상기 버스바 프레임은 상기 셀 블록의 일 측에 결합된 것을 특징으로 하는 배터리 셀 어셈블리.
- 제 1 항에 있어서,상기 셀 블록의 다른 전극 리드에 연결된 다른 버스바를 더 포함하고,상기 열전도성 충전재는 상기 다른 버스바에 접촉된 것을 특징으로 하는 배터리 셀 어셈블리.
- 제 1 항에 있어서,상기 열전도성 충전재는,실리콘을 포함하는 제1 물질층; 및상기 제1 물질층 상에 적층되고 열전도성 수지를 포함하는 제2 물질층;을 포함하는 것을 특징으로 하는 배터리 셀 어셈블리.
- 제 1 항에 있어서,상기 버스바는 상기 셀 블록의 서로 다른 전극 리드들을 연결하는 인터-버스바 또는 외부의 전기디바이스에 전기적으로 연결된 터미널 버스바인 것을 특징으로 하는 배터리 셀 어셈블리.
- 팩 하우징; 및상기 팩 하우징에 탑재되고, 제1 방향으로 배열된 복수의 배터리 셀 어셈블리;를 포함하고,상기 복수의 배터리 셀 어셈블리는 각각,복수의 배터리 셀을 포함하는 셀 블록;상기 셀 블록 상의 냉각 플레이트;상기 셀 블록의 서로 다른 전극 리드들에 연결된 복수의 버스바;상기 복수의 버스바가 탑재되는 하부와, 상기 복수의 버스바 각각의 일부 및 상기 냉각 플레이트의 제1 부분을 수용하는 수용 공간을 가진 상부를 포함하는 버스바 프레임; 및상기 버스바 프레임의 상기 수용 공간을 적어도 부분적으로 채우고, 상기 복수의 버스바 및 상기 냉각 플레이트에 접촉되어 상기 복수의 버스바를 상기 냉각 플레이트에 열적으로 결합시키도록 구성된 열전도성 충전재;를 포함하는 배터리 팩.
- 제 9 항에 있어서,상기 버스바 프레임은 상기 수용 공간의 하측에 있는 복수의 슬릿 및 상기 수용 공간의 상측에 있는 개구를 포함하고,상기 복수의 버스바는 각각 상기 복수의 슬릿 중 대응된 슬릿을 통해 상기 버스바 프레임의 상기 수용 공간으로 삽입되고,상기 냉각 플레이트의 상기 제1 부분은 상기 버스바 프레임의 상기 개구를 통해 상기 버스바 프레임의 수용 공간으로 삽입된 것을 특징으로 하는 배터리 팩.
- 제 9 항에 있어서,상기 복수의 버스바는 제1 방향으로 배열되고,상기 냉각 플레이트의 상기 제1 부분은 상기 제1 방향으로 연속적으로 연장되고 상기 열전도성 충전재에 연속적으로 접촉된 것을 특징으로 하는 배터리 팩.
- 제 9 항에 있어서,상기 냉각 플레이트는 상기 셀 블록의 상면에 결합되고,상기 버스바 프레임은 상기 셀 블록의 일 측에 결합된 것을 특징으로 하는 배터리 팩.
- 제 9 항에 있어서,상기 복수의 배터리 셀 어셈블리를 수용하는 하부 하우징; 및상기 복수의 배터리 셀 어셈블리를 덮도록 상기 하부 하우징 상에 결합된 탑 플레이트를 포함하고,상기 복수의 배터리 셀 어셈블리는 상기 탑 플레이트에 매달려 지지된 것을 특징으로 하는 배터리 팩.
- 제 13 항에 있어서,상기 복수의 배터리 셀 어셈블리는 상기 하부 하우징의 바닥벽으로부터 이격되고, 상기 복수의 배터리 셀 어셈블리 각각과 상기 하부 하우징의 바닥벽 사이에 공간이 형성된 것을 특징으로 하는 배터리 팩.
- 제 9 항에 있어서,상기 복수의 배터리 셀 어셈블리는 각각 파우치 형 배터리 셀이 적층된 셀 블록을 포함하는 것을 특징으로 하는 배터리 팩.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202480004448.2A CN120077508A (zh) | 2023-07-24 | 2024-07-22 | 电池单体组件和包括该电池单体组件的电池组 |
| EP24845973.7A EP4586368A4 (en) | 2023-07-24 | 2024-07-22 | BATTERY COMPONENT AND BATTERY BLOCK ASSEMBLY |
| JP2025522713A JP2025535818A (ja) | 2023-07-24 | 2024-07-22 | バッテリーセルアセンブリーおよびそれを含むバッテリーパック |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020230095852A KR20250014985A (ko) | 2023-07-24 | 2023-07-24 | 배터리 셀 어셈블리 및 이를 포함하는 배터리 팩 |
| KR10-2023-0095852 | 2023-07-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2025023671A1 true WO2025023671A1 (ko) | 2025-01-30 |
Family
ID=94375078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2024/010529 Ceased WO2025023671A1 (ko) | 2023-07-24 | 2024-07-22 | 배터리 셀 어셈블리 및 이를 포함하는 배터리 팩 |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4586368A4 (ko) |
| JP (1) | JP2025535818A (ko) |
| KR (1) | KR20250014985A (ko) |
| CN (1) | CN120077508A (ko) |
| WO (1) | WO2025023671A1 (ko) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170095052A (ko) * | 2016-02-12 | 2017-08-22 | 주식회사 엘지화학 | 배터리 셀 냉각용 버스바 및 이를 이용한 배터리 모듈 |
| US20190334134A1 (en) * | 2016-03-14 | 2019-10-31 | Nordfels Gmbh | Battery |
| KR20200127167A (ko) * | 2018-01-17 | 2020-11-10 | 스퇴클린 로지스틱 아게 | 폭발 위험이 있는 지역에서 사용되는 산업용 트럭용 배터리 전원 공급 장치 |
| KR20230046394A (ko) * | 2021-09-30 | 2023-04-06 | 현대자동차주식회사 | 차량용 배터리 방열유닛 및 이를 포함한 차량용 배터리 케이스 |
| KR20230095852A (ko) | 2021-12-22 | 2023-06-29 | 가즈트랑스포르 에 떼끄니가즈 | 액화 가스 저장 탱크를 적재 및 하역하기 위한 타워 |
| KR20230106219A (ko) * | 2022-01-06 | 2023-07-13 | 주식회사 엘지에너지솔루션 | 차량용 배터리모듈 및 이의 제조 방법 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102301195B1 (ko) * | 2017-12-01 | 2021-09-09 | 주식회사 엘지에너지솔루션 | 배터리 팩 |
| KR102204302B1 (ko) * | 2018-09-13 | 2021-01-15 | 주식회사 엘지화학 | 배터리 모듈, 이러한 배터리 모듈을 포함하는 배터리 팩 및 이러한 배터리 팩을 포함하는 자동차 |
| DE102021115705B3 (de) | 2021-06-17 | 2022-06-30 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Batterie für ein Kraftfahrzeug |
| US12113189B2 (en) * | 2021-08-25 | 2024-10-08 | GM Global Technology Operations LLC | Battery including thermally conductive filler material with thermal runaway containment function |
| KR20230049454A (ko) * | 2021-10-06 | 2023-04-13 | 주식회사 엘지에너지솔루션 | 전지 모듈 및 이를 포함하는 전지 팩 |
| DE102022100745A1 (de) * | 2022-01-13 | 2023-07-13 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Batteriesystem für ein elektrisch oder teilelektrisch angetriebenes Fahrzeug |
-
2023
- 2023-07-24 KR KR1020230095852A patent/KR20250014985A/ko active Pending
-
2024
- 2024-07-22 WO PCT/KR2024/010529 patent/WO2025023671A1/ko not_active Ceased
- 2024-07-22 EP EP24845973.7A patent/EP4586368A4/en active Pending
- 2024-07-22 CN CN202480004448.2A patent/CN120077508A/zh active Pending
- 2024-07-22 JP JP2025522713A patent/JP2025535818A/ja active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170095052A (ko) * | 2016-02-12 | 2017-08-22 | 주식회사 엘지화학 | 배터리 셀 냉각용 버스바 및 이를 이용한 배터리 모듈 |
| US20190334134A1 (en) * | 2016-03-14 | 2019-10-31 | Nordfels Gmbh | Battery |
| KR20200127167A (ko) * | 2018-01-17 | 2020-11-10 | 스퇴클린 로지스틱 아게 | 폭발 위험이 있는 지역에서 사용되는 산업용 트럭용 배터리 전원 공급 장치 |
| KR20230046394A (ko) * | 2021-09-30 | 2023-04-06 | 현대자동차주식회사 | 차량용 배터리 방열유닛 및 이를 포함한 차량용 배터리 케이스 |
| KR20230095852A (ko) | 2021-12-22 | 2023-06-29 | 가즈트랑스포르 에 떼끄니가즈 | 액화 가스 저장 탱크를 적재 및 하역하기 위한 타워 |
| KR20230106219A (ko) * | 2022-01-06 | 2023-07-13 | 주식회사 엘지에너지솔루션 | 차량용 배터리모듈 및 이의 제조 방법 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4586368A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4586368A4 (en) | 2026-04-08 |
| CN120077508A (zh) | 2025-05-30 |
| JP2025535818A (ja) | 2025-10-28 |
| KR20250014985A (ko) | 2025-02-03 |
| EP4586368A1 (en) | 2025-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019203460A1 (ko) | 디개싱 유로를 구비한 배터리 팩 | |
| WO2013168989A1 (en) | Secondary battery module having through type cool channel | |
| WO2017052050A1 (ko) | 배터리 모듈, 이러한 배터리 모듈을 포함하는 배터리 팩 및 이러한 배터리 팩을 포함하는 자동차 | |
| WO2018230819A1 (ko) | 배터리 모듈, 이러한 배터리 모듈을 포함하는 배터리 팩 및 이러한 배터리 팩을 포함하는 자동차 | |
| WO2022158765A1 (ko) | 전지 모듈 이를 포함하는 전지 팩 | |
| WO2024019400A1 (ko) | 배터리 팩 및 이를 포함하는 자동차 | |
| WO2025037908A1 (ko) | 배터리 셀 어셈블리 및 이를 포함하는 배터리 팩 | |
| WO2025028966A1 (ko) | 배터리 모듈 및 이를 포함하는 배터리 팩 | |
| WO2024019390A1 (ko) | 배터리 모듈 및, 이를 포함하는 배터리 팩 및 이를 포함하는 자동차 | |
| WO2025147017A1 (ko) | 배터리 조립체 및 이를 포함하는 배터리 팩 | |
| WO2022124660A1 (ko) | 전지 모듈 및 이를 포함하는 전지팩 | |
| WO2025053663A1 (ko) | 배터리 조립체 및 이를 포함하는 배터리 팩 | |
| WO2025053665A1 (ko) | 배터리 조립체를 포함하는 배터리 팩 및 배터리 팩을 포함하는 전기 자동차 | |
| WO2025042265A1 (en) | Battery cell assembly and battery pack including the same | |
| WO2025053607A1 (ko) | 배터리 셀 어셈블리 및 이를 포함하는 배터리 팩 | |
| WO2022216122A1 (ko) | 전지팩 및 이를 포함하는 디바이스 | |
| WO2025095567A1 (ko) | 배터리 조립체 | |
| KR20250014985A (ko) | 배터리 셀 어셈블리 및 이를 포함하는 배터리 팩 | |
| WO2025063805A1 (ko) | 배터리 팩 | |
| WO2025023624A1 (en) | Battery cell assembly and battery pack including the same | |
| WO2025095552A1 (ko) | 배터리 팩 | |
| WO2025058389A1 (ko) | 배터리 셀 어셈블리 및 이를 포함하는 배터리 팩 | |
| WO2025095568A1 (ko) | 배터리 조립체 및 이를 포함하는 배터리 팩 | |
| WO2025037907A1 (ko) | 배터리 팩 | |
| WO2025095554A1 (ko) | 배터리 팩 |
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: 24845973 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2024845973 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 2024845973 Country of ref document: EP Effective date: 20250410 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202517036341 Country of ref document: IN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202480004448.2 Country of ref document: CN |
|
| ENP | Entry into the national phase |
Ref document number: 2025522713 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2025522713 Country of ref document: JP |
|
| WWP | Wipo information: published in national office |
Ref document number: 202480004448.2 Country of ref document: CN |
|
| WWP | Wipo information: published in national office |
Ref document number: 2024845973 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |