WO2023075309A1 - Module de batterie cylindrique et bloc-batterie cylindrique le comprenant - Google Patents

Module de batterie cylindrique et bloc-batterie cylindrique le comprenant Download PDF

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Publication number
WO2023075309A1
WO2023075309A1 PCT/KR2022/016151 KR2022016151W WO2023075309A1 WO 2023075309 A1 WO2023075309 A1 WO 2023075309A1 KR 2022016151 W KR2022016151 W KR 2022016151W WO 2023075309 A1 WO2023075309 A1 WO 2023075309A1
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WO
WIPO (PCT)
Prior art keywords
cylindrical battery
frame
paragraph
module
battery cell
Prior art date
Application number
PCT/KR2022/016151
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English (en)
Korean (ko)
Inventor
박지수
손영수
안태선
Original Assignee
주식회사 엘지에너지솔루션
Priority date (The priority date 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 date listed.)
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Publication of WO2023075309A1 publication Critical patent/WO2023075309A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/24—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 from their environment, e.g. from corrosion
    • 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 cylindrical battery module and a battery pack including the same, and more particularly, to a cylindrical battery module that prevents flame propagation and has improved safety, and a battery pack including the same.
  • Secondary batteries are attracting much attention as energy sources for power devices such as electric bicycles, electric vehicles, and hybrid electric vehicles as well as mobile devices such as mobile phones, digital cameras, and laptop computers.
  • lithium secondary batteries such as lithium ion batteries and lithium ion polymer batteries having advantages such as high energy density, discharge voltage, and output stability.
  • secondary batteries are also classified according to the structure of the electrode assembly having a laminated structure of a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode.
  • a jelly roll-type electrode assembly having a structure in which long sheet-type positive and negative electrodes are wound with a separator interposed therebetween, and a plurality of positive and negative electrodes cut in units of a predetermined size are sequentially stacked with a separator interposed therebetween. and stacked electrode assemblies.
  • the secondary battery is a cylindrical battery in which the electrode assembly is embedded in a cylindrical case, a prismatic battery in which the electrode assembly is embedded in a prismatic case, and a pouch in which the electrode assembly is embedded in a pouch-type case of an aluminum laminate sheet can be classified as type batteries.
  • a secondary battery can be suitably used in the market only when it satisfies the performance suitable for the purpose of use and at the same time has safety.
  • design factors are determined by simultaneously considering these performance and safety aspects.
  • safety evaluations such as overcharge, overdischarge, impact, nail test, hot box, etc. are conducted along with performance evaluations such as lifespan, efficiency characteristics, and high/low temperature characteristics.
  • a current interrupt device may be included.
  • An object to be solved by the present invention is to provide a cylindrical battery module with improved safety and a battery pack including the same.
  • a cylindrical battery module includes a cylindrical battery cell stack in which a plurality of cylindrical battery cells are stacked; a module frame accommodating the cylindrical battery cell stack; an upper cover covering an upper portion of the cylindrical battery cell stack; and a potting resin positioned inside the module frame, wherein the potting resin is placed in contact with a portion of the cylindrical battery cell.
  • the potting resin may be located in a region between the plurality of cylindrical battery cells accommodated in the module frame.
  • the potting resin may be located in a region between the cylindrical battery cell and an adjacent cylindrical battery cell, except for a region where the cylindrical battery cell and the module frame come into contact with each other.
  • the potting resin may be made of a flame retardant material.
  • the potting resin may be made of flame retardant silicon.
  • the upper cover may include an injection hole through which the potting resin is injected into the module frame.
  • the injection hole may be a hole passing through a region of the upper cover corresponding to a space between the plurality of cylindrical battery cells accommodated in the module frame.
  • the module frame includes an upper frame and a lower frame, and the upper frame and the lower frame surround side surfaces of the cylindrical battery cell stack, and upper and lower surfaces may be open.
  • the upper frame may include a first wall, and a height of the first wall may correspond to a height difference between the upper cover and an upper surface of the upper frame.
  • the upper frame may include a first support portion that is a pillar extending from the lower surface of the upper frame to an upper surface
  • the lower frame may include a second support portion that is a pillar extending from the lower surface of the lower frame to the upper surface.
  • the first support part and the second support part may be positioned to correspond to a space between the plurality of cylindrical battery cells.
  • the first support part and the second support part may contact each other and be positioned.
  • a support hole may be provided in a region of the upper cover corresponding to the first support portion.
  • the lower frame may include a concave portion, which is an area where a lower surface of the lower frame is partially depressed, and a gasket may be positioned in the concave portion.
  • the gasket may be an O-ring formed of a rubber material.
  • the gasket may be formed by double injection of plastic and rubber.
  • the upper frame may include a protruding portion protruding along an edge of a lower surface of the upper frame
  • the lower frame may include a recessed portion recessed along an edge of an upper surface of the lower frame
  • the protruding part may be inserted into the recessed part, and the protruding part and the recessed part may engage and engage each other.
  • a cylindrical battery pack according to another embodiment of the present invention includes the above-described cylindrical battery module.
  • flame propagation to adjacent cylindrical battery cells can be prevented by applying a potting resin on top of the cylindrical battery module.
  • FIG. 1 is a perspective view showing a cylindrical battery module according to an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view showing a cylindrical battery module according to an embodiment of the present invention.
  • FIG. 3 is an exploded perspective view illustrating a cylindrical battery cell constituting the cylindrical battery module of FIG. 2 .
  • FIG. 4 is an exploded perspective view showing an electrode assembly included in the cylindrical battery cell of FIG. 3 before being wound.
  • FIG. 5 is a cross-sectional view taken along A-A′ of FIG. 1;
  • FIG. 6 is a top view of the cylindrical battery module of FIG. 1 viewed from the z-axis direction to the -z-axis direction.
  • FIG. 7 is a view showing that a potting resin is positioned in the lower frame of FIG. 1 .
  • FIG. 8 is a top view of the lower frame of FIG. 1 viewed from the z-axis direction to the -z-axis direction.
  • FIG. 9 is a cross-sectional view illustrating an area A1 of FIG. 5 .
  • FIG. 10 is a perspective view illustrating an area A1 of FIG. 5 .
  • FIG. 11 is a cross-sectional view illustrating an area A2 of FIG. 5 .
  • a part such as a layer, film, region, plate, etc.
  • another part is in the middle.
  • a part is said to be “directly on” another part, it means that there is no other part in between.
  • a reference part means to be located above or below the reference part, and to necessarily be located “above” or "on” in the opposite direction of gravity does not mean no.
  • planar image it means when the target part is viewed from above, and when it is referred to as “cross-sectional image”, it means when a cross section of the target part cut vertically is viewed from the side.
  • 1 is a perspective view showing a cylindrical battery module according to an embodiment of the present invention.
  • 2 is an exploded perspective view showing a cylindrical battery module according to an embodiment of the present invention.
  • the cylindrical battery module 100 includes a cylindrical battery cell 110, an upper frame 500 and a lower frame 600 in which the cylindrical battery cell 110 is accommodated. ) and an upper cover 530 provided with an injection hole 531 through which the potting resin 700 is injected between the cylindrical battery cell 110 .
  • the cylindrical battery cell 110 is formed in an elongated rod shape, and in this embodiment, the cylindrical battery cell 110 is exemplified.
  • the cylindrical battery cell stack 120 which is a plurality of cylindrical battery cells 110, may be accommodated in a module frame.
  • a module frame accommodating the cylindrical battery cell stack 120 may include an upper frame 500 and a lower frame 600 .
  • the upper frame 500 and the lower frame 600 are combined in a state in which the cylindrical battery cell stack 120 is accommodated, and the corner portions corresponding to each other are in contact, and the side of the cylindrical battery cell stack 200 is formed.
  • a covering structure can be formed.
  • the upper frame 500 and the lower frame 600 each have an upper coupling portion and a lower coupling portion in corresponding regions, and the upper coupling portion and the lower coupling portion may be engaged with each other.
  • the upper frame 500 and the lower frame 600 may be coupled by welding or the like in a state in which corresponding corner portions are in contact with each other.
  • the upper frame 500 and the lower frame 600 may physically protect the cylindrical battery cell stack 200 .
  • the upper frame 500 and the lower frame 600 may include a metal material having a predetermined strength.
  • the upper frame 500 may have a shape in which the side surfaces of the cylindrical battery cell stack 120 are wrapped around, and the upper surface (z-axis direction) and lower surface (-z-axis direction) are open.
  • the upper frame 500 may have a shape corresponding to the side surface of the cylindrical battery cell stack 120 .
  • the lower surface of the upper frame 500 may have a partially open structure.
  • the lower surface of the upper frame 500 may have a structure surrounding each side of the cylindrical battery cell 110 .
  • the lower surface of the upper frame 500 may have a structure in which a plurality of circles with a central hole are connected to each other. In this case, the circumference of the circle constituting the lower surface of the upper frame 500 may correspond to the circumference of the cylindrical battery cell 110 .
  • the upper frame 500 is assembled on one open surface and includes an upper cover 530 covering the top of the cylindrical battery cell stack 120 and a plurality of cylindrical battery cells 110 constituting the cylindrical battery cell stack 120. It includes a first support part 550 for fixing.
  • the upper cover 530 may be assembled and provided on one open surface of the upper frame 500 .
  • the upper cover 530 may be formed in a plate-like structure covering an upper portion of the cylindrical battery cell stack 120 mounted on the upper frame 500 . That is, the upper frame 500 may surround the side surface of the cylindrical battery cell stack 120, and the upper cover 530 may cover the remaining top surface (z-axis direction).
  • the upper cover 530 may have a shape corresponding to that of the upper frame 500 .
  • the upper cover 530 may include an injection hole 531 .
  • the injection hole 531 may be a hole penetrating a region of the upper cover 530 corresponding to a space between the plurality of cylindrical battery cells 110 constituting the cylindrical battery cell stack 120 .
  • the potting resin 700 may be injected between the plurality of cylindrical battery cells 110 constituting the cylindrical battery cell stack 120 through the injection hole 531 .
  • the upper cover 530 may be located lower than the height of one end of the upper frame 500 . Accordingly, a difference in height between the upper cover 530 and one end of the upper frame 500 may occur.
  • the upper frame 500 may include a first wall 540 .
  • the first wall 540 may be formed due to a height difference between the upper surface of the upper cover 530 and the upper frame 500 .
  • the height of the first wall 540 may correspond to a height difference between the upper surface of the upper cover 530 and the upper frame 500 . Due to the first wall 540, even if a large amount of the potting resin 700 is injected through the injection hole 531 and the potting resin 700 overflows to the outside of the upper cover 530, the first wall 540 It does not flow beyond the outer wall of the upper frame 500.
  • the potting resin 700 injected through the injection hole 531 of the upper cover 530 will be described in detail in FIG. 5 to be described later.
  • a first support for fixing the positions of the plurality of cylindrical battery cells 110 accommodated in the upper frame 500 may be provided on the lower surface of the upper frame 500 .
  • the first support part 550 may be a pillar extending from the lower surface (in the -z-axis direction) of the upper frame 500 to the upper surface (in the z-axis direction).
  • the first support part 550 may be located in contact with a part of the lower surface of the upper frame 500 .
  • the first support part 550 is positioned to correspond to the space between the cylindrical battery cells 110 formed when the plurality of cylindrical battery cells 110 are positioned in the module frame, but the injection hole 531 of the upper cover 530 is located in a non-corresponding region.
  • One area of the upper cover 530 corresponding to the first support part 550 may include a support hole 532 .
  • the end of the first support part 550 is positioned while passing through the support hole 532 to improve the fixing power of the battery cell 110 accommodated in the upper frame 500 and to improve the rigidity of the cylindrical battery module 100.
  • the lower frame 600 may have a shape that surrounds the side surfaces of the cylindrical battery cell stack 120 and has an open upper surface (z direction) and lower surface ( ⁇ z direction).
  • the lower frame 600 may have a shape corresponding to the side surface of the cylindrical battery cell stack 120 .
  • the upper surface of the lower frame 600 has a completely open structure
  • the lower surface of the lower frame 600 has a partially open structure, and may have a structure that partially surrounds the lower surface of the cylindrical battery cell stack 120.
  • the lower surface of the lower frame 600 may have a structure surrounding each edge of the cylindrical battery cell 110 .
  • the lower surface of the lower frame 600 may have a structure in which a plurality of circles with a center open are connected to each other. In this case, the circumference of the circle constituting the lower surface of the lower frame 600 may be smaller than the circumference of the cylindrical battery cell 110 .
  • a lower surface of the lower frame 600 may include a second support 650 for fixing positions of the plurality of cylindrical battery cells 110 accommodated in the lower frame 600 .
  • the second support part 650 may be a pillar extending from the lower surface ( ⁇ z-axis direction) of the lower frame 600 to the upper surface (z-axis direction).
  • the second support part 650 may be located in contact with a part of the lower surface of the lower frame 600 .
  • the second support part 650 may be positioned to correspond to the space between the cylindrical battery cells 110 formed when the plurality of cylindrical battery cells 110 are positioned.
  • the second support part 650 may be positioned while corresponding to the first support part 550 in a state in which the upper frame 500 and the lower frame 600 are coupled, and the first support part 550 and the second support part 650 can be positioned while touching.
  • the module frame according to the modified example may be a mono frame having an integrated side surface. That is, it may not be a structure in which the upper frame 500 and the lower frame 600 are coupled to each other, but a structure in which side surfaces are integrated by extrusion molding.
  • FIG. 3 is an exploded perspective view illustrating a cylindrical battery cell constituting the cylindrical battery module of FIG. 2 .
  • FIG. 4 is an exploded perspective view showing an electrode assembly included in the cylindrical battery cell of FIG. 3 before being wound.
  • the cylindrical battery cell 110 according to an embodiment of the present invention, referring to FIGS. 3 and 4, the electrode assembly 200 and the electrode assembly 200 are accommodated and the top is It includes an open cylindrical case 300 and a cap assembly 400 coupled to the open top of the cylindrical case 300 .
  • the electrode assembly 200 may include a first electrode 210, a second electrode 220, and a separator 230.
  • the jelly roll-type electrode assembly 200 may be formed by winding the first electrode 210 , the second electrode 220 , and the separator 230 together.
  • the separator 230 may be interposed between the first electrode 210 and the second electrode 220 .
  • a separator 240 is additionally disposed under the second electrode 220 to prevent the first electrode 210 and the second electrode 220 from contacting each other when rolled in a jelly roll form.
  • the first electrode 210 includes a first electrode current collector 211 and a first active material layer 212 formed by coating an electrode active material on the first electrode current collector 211 .
  • the electrode active material is applied on the first electrode current collector 211 to form the first active material layer 212, and the electrode active material is not applied on the first electrode current collector 211, so the first electrode current collector (
  • the first electrode tab 213 may be joined to a portion where 211 is exposed by welding or the like.
  • the second electrode 220 includes a second electrode current collector 221 and a second active material layer 222 formed by coating an electrode active material on the second electrode current collector 221 .
  • the electrode active material is applied on the second electrode current collector 221 to form the second active material layer 222, and the electrode active material is not applied on the second electrode current collector 221, so the second electrode current collector (
  • the second electrode tab 223 may be joined to a portion where 221 is exposed by welding or the like.
  • the first electrode 210 may be an anode
  • the second electrode 220 may be a cathode
  • the first electrode tab 213 may be a positive electrode tab
  • the second electrode tab 223 may be a negative electrode tab.
  • the first electrode tab 213 and the second electrode tab 223 may protrude in opposite directions. As shown in FIG. 3 , the first electrode tab 213 may protrude in the direction where the cap assembly 400 is located, and the second electrode tab 223 may protrude toward the bottom of the cylindrical case 300. there is.
  • the cylindrical case 300 is a structure for accommodating the electrode assembly 200 impregnated with electrolyte, and may include a metal material.
  • the cap assembly 400 may include a top cap 410, a safety vent 420, and a current interruption member 430 (Current Interrupt Device, CID).
  • the top cap 410 and the safety vent 420 may form a structure in close contact with each other.
  • the safety vent 420 is positioned on the current blocking member 430 and may be electrically connected to the current blocking member 430 .
  • the center of the safety vent 420 and the center of the current blocking member 430 may be physically and electrically connected.
  • a first electrode tab 213 protruding from the first electrode 210 may be connected to a lower end of the current blocking member 430 .
  • the safety vent 420 is a thin film structure through which current passes, and its center may protrude downward, that is, in a direction where the current blocking member 430 is located.
  • the current blocking member 430 is a plate member through which current passes, and may have a plurality of through-holes for discharging gas.
  • the top cap 410, the safety vent 420, the current blocking member 430, and the first electrode tab 213 are sequentially connected to the electrode terminal through which the top cap 410 guides the electrical connection of the electrode assembly 200. can function as
  • the sealing gasket 450 may increase sealing force between the cap assembly 400 and the cylindrical case 300 . That is, the secondary battery 100 may be sealed by placing the gasket 700 between the cylindrical case 300 and the cap assembly 400 . By disposing the gasket 450, leakage of the internal electrolyte solution is prevented.
  • FIG. 5 is a cross-sectional view taken along A-A′ of FIG. 1; 6 is a top view of the cylindrical battery module of FIG. 1 viewed from the z-axis direction to the -z-axis direction.
  • the cylindrical battery cells 110 are accommodated in a module frame in which an upper frame 500 and a lower frame 600 are combined.
  • the potting resin 700 may be positioned in the space between the cylindrical battery cells 110 .
  • the potting resin 700 may be injected through the injection hole 531 of the upper cover 530 positioned on the upper surface of the upper frame 500 .
  • the cylindrical battery cell stack 120 is accommodated in a module frame in which the upper frame 500 and the lower frame 600 are combined, and the upper cover ( 530 is positioned, it may be injected into the space between the cylindrical battery cells 110 through the injection hole 531 located in one region of the upper cover 530 .
  • the potting resin 700 may be formed of a flame retardant material or a phase change material.
  • the potting resin 700 may be made of flame retardant silicon.
  • the potting resin 700 may be located inside the module frame.
  • the potting resin 700 injected through the injection hole 531 may contact a portion of the cylindrical battery cell 110 and be positioned between the cylindrical battery cells 110 .
  • the potting resin 700 is a cylindrical battery cell adjacent to the cylindrical battery cell 110, except for a region where the cylindrical battery cell 110 and the upper frame 500 or the cylindrical battery cell 110 and the lower frame 600 contact each other ( 110) may be located in the region between. Therefore, even if one cylindrical battery cell 110 is ignited, the potting resin 700 located between the adjacent cylindrical battery cells 110 can prevent the flame from propagating to the adjacent cylindrical battery cells 110. .
  • the potting resin 700 is injected only between the cylindrical battery cells 110 instead of the entire inside of the module frame, the weight of the cylindrical battery module 100 can be reduced.
  • the potting resin 700 may be positioned while covering the upper cover 530. As described above in the description of FIGS. 1 and 2, since the upper cover 530 is located lower than the upper surface of the upper frame 500, in this case, the amount of potting resin 700 that can accommodate the module frame is greater Even if the potting resin 700 is injected, the potting resin 700 may not overflow to the outside of the upper frame 500 .
  • FIG. 7 is a view showing that a potting resin is positioned in the lower frame of FIG. 1 .
  • cylindrical battery cells 110 are accommodated in a module frame in which an upper frame 500 and a lower frame 600 are combined, and
  • the potting resin 700 may be positioned in the space between the battery cells 110 .
  • the potting resin 700 may be located in contact with a part of the second support 650 and the cylindrical battery cell 110 located in the space between the cylindrical battery cells 110 accommodated in the lower frame 600. can Due to this, the position of the cylindrical battery cell 110 is fixed more firmly, and stability of the cylindrical battery module 100 can be improved.
  • the potting resin 700 may be positioned in the same shape on the upper frame 500 as well.
  • FIG. 8 is a top view of the lower frame of FIG. 1 viewed from the z-axis direction to the -z-axis direction.
  • FIG. 9 is a cross-sectional view illustrating an area A1 of FIG. 5 .
  • FIG. 10 is a perspective view illustrating an area A1 of FIG. 5 .
  • the lower frame 600 may include a concave portion 660 corresponding to the shape of each cylindrical battery cell 110 .
  • the concave portion 660 may refer to an area where the lower surface of the lower frame 600 is partially depressed.
  • the concave portion 660 may be a circularly depressed area corresponding to the shape of each cylindrical battery cell 110 accommodated in the lower frame 600 .
  • Each cylindrical battery cell 110 may be mounted to correspond to the concave portion 660 .
  • the concave portion 660 may correspond to the number of each cylindrical battery cell 110 accommodated in the lower frame 600 .
  • Each cylindrical battery cell 110 may include a convex portion 111 on a lower surface, and the convex portion 111 may have a shape corresponding to the concave portion 660 .
  • the convex portion 111 may be inserted into the concave portion 660 and mounted, thereby fixing the position of the cylindrical battery cell 110 more firmly, thereby improving the stability of the cylindrical battery module 100.
  • a gasket 661 is positioned in the concave portion 660 to improve waterproof performance and prevent the potting resin 700 from leaking out of the lower frame 600 .
  • the gasket 661 is an O-ring made of rubber and may be fitted into the concave portion 660 .
  • the gasket 661 may be formed by double injection of plastic and rubber.
  • FIG. 11 is a cross-sectional view illustrating an area A2 of FIG. 5 .
  • the upper frame 500 and the lower frame 600 include a protrusion 570 and a depression 670, respectively, and the protrusion 570 and the depression 670 are hooked.
  • the upper frame 500 may include a protrusion 570 protruding in the -z-axis direction.
  • the protruding portion 570 may refer to a protruding area along the edge of the upper frame 500 .
  • the protruding portion 570 may be a protruding area along the edge of the lower surface of the upper frame 500 .
  • the protruding portion 570 may protrude and be located at one end of the upper frame 500 .
  • the lower frame 600 may include a recessed portion 670 recessed in the -z-axis direction.
  • the recessed portion 670 may refer to a recessed area along the edge of the lower frame 600 .
  • the recessed portion 670 may be a recessed area along the edge of the upper surface of the lower frame 600 .
  • the recessed portion 670 may be recessed and located at one end of the lower frame 600 .
  • a width of the protrusion 570 may be smaller than a width of the depression 670 , and the protrusion 570 may be inserted into the depression 670 .
  • the protruding portion 570 and the recessed portion 670 may be engaged while being engaged with each other.
  • the protruding portion 570 and the recessed portion 670 are not limited to engaging, and may be coupled by various methods such as welding.
  • the cylindrical battery module described above and the cylindrical battery pack including the same can be applied to various devices. These devices can be applied to means of transportation such as electric bicycles, electric vehicles, hybrid vehicles, etc., but the present invention is not limited thereto and can be applied to various devices that can use a cylindrical battery module and a battery pack including the same, which is also It belongs to the scope of the present invention.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

La présente invention comprend un module de batterie cylindrique et un bloc-batterie cylindrique le comprenant, le module de batterie cylindrique selon un mode de réalisation de la présente invention comprenant : un empilement d'éléments de batterie cylindrique comprenant une pluralité d'éléments de batterie cylindrique empilés ensemble ; un cadre de module dans lequel est logé l'empilement d'éléments de batterie cylindrique ; un couvercle supérieur qui recouvre la partie supérieure de l'empilement d'éléments de batterie cylindrique ; et une résine d'enrobage qui est disposée à l'intérieur du cadre de module, la résine d'enrobage étant positionnée en contact avec une partie des éléments de batterie cylindrique.
PCT/KR2022/016151 2021-10-27 2022-10-21 Module de batterie cylindrique et bloc-batterie cylindrique le comprenant WO2023075309A1 (fr)

Applications Claiming Priority (2)

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KR1020210144527A KR20230060154A (ko) 2021-10-27 2021-10-27 원통형 전지 모듈 및 이를 포함하는 원통형 전지 팩
KR10-2021-0144527 2021-10-27

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WO2023075309A1 true WO2023075309A1 (fr) 2023-05-04

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CN104993187A (zh) * 2015-07-16 2015-10-21 广东万锦科技股份有限公司 一种圆柱电池的均温方法
CN206236761U (zh) * 2016-10-18 2017-06-09 广东工业大学 一种电池热管理装置
JP2020017385A (ja) * 2018-07-24 2020-01-30 Fdk株式会社 電池ユニット
KR20200123413A (ko) * 2018-02-16 2020-10-29 에이치. 비. 풀러, 컴퍼니 전지 포팅 컴파운드 및 제조 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140377623A1 (en) * 2013-06-21 2014-12-25 Ioxus, Inc. Energy storage device assembly
CN104993187A (zh) * 2015-07-16 2015-10-21 广东万锦科技股份有限公司 一种圆柱电池的均温方法
CN206236761U (zh) * 2016-10-18 2017-06-09 广东工业大学 一种电池热管理装置
KR20200123413A (ko) * 2018-02-16 2020-10-29 에이치. 비. 풀러, 컴퍼니 전지 포팅 컴파운드 및 제조 방법
JP2020017385A (ja) * 2018-07-24 2020-01-30 Fdk株式会社 電池ユニット

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