WO2023287125A1 - 전지팩 및 이를 포함하는 디바이스 - Google Patents
전지팩 및 이를 포함하는 디바이스 Download PDFInfo
- Publication number
- WO2023287125A1 WO2023287125A1 PCT/KR2022/009995 KR2022009995W WO2023287125A1 WO 2023287125 A1 WO2023287125 A1 WO 2023287125A1 KR 2022009995 W KR2022009995 W KR 2022009995W WO 2023287125 A1 WO2023287125 A1 WO 2023287125A1
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- WO
- WIPO (PCT)
- Prior art keywords
- cooling
- pack
- battery
- tube
- battery pack
- Prior art date
Links
- 238000001816 cooling Methods 0.000 claims abstract description 108
- 238000007789 sealing Methods 0.000 claims abstract description 35
- 239000003507 refrigerant Substances 0.000 claims description 32
- 238000010168 coupling process Methods 0.000 claims description 25
- 230000008878 coupling Effects 0.000 claims description 23
- 238000005859 coupling reaction Methods 0.000 claims description 23
- 239000002826 coolant Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
- F16L5/02—Sealing
- F16L5/08—Sealing by means of axial screws compressing a ring or sleeve
-
- 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
- H01M10/65—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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- 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
- H01M2220/00—Batteries for particular applications
- H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
-
- 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 pack and a device including the same, and more particularly, to a battery pack having a water cooling structure and a device including the same.
- secondary batteries capable of charging and discharging are a solution to air pollution, such as existing gasoline vehicles using fossil fuels, electric vehicles (EVs), hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles ( P-HEV), etc., the need for development of secondary batteries is increasing.
- a lithium secondary battery mainly use lithium-based oxides and carbon materials as positive electrode active materials and negative electrode active materials, respectively.
- a lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate coated with such a positive electrode active material and a negative electrode active material are disposed with a separator therebetween, and a battery case in which the electrode assembly is sealed and housed together with an electrolyte solution.
- lithium secondary batteries can be classified into a can-type secondary battery in which an electrode assembly is embedded in a metal can and a pouch-type secondary battery in which an electrode assembly is embedded in a pouch of an aluminum laminate sheet, depending on the shape of an exterior material.
- a battery module electrically connecting multiple battery cells this is used In this battery module, capacity and output are improved by forming a battery cell stack in which a plurality of battery cells are connected in series or parallel to each other.
- one or more battery modules may be mounted together with various control and protection systems such as a battery management system (BMS) and a cooling system to form a battery pack.
- BMS battery management system
- a plurality of secondary batteries that is, a battery module or a battery pack having battery cells may increase the temperature more quickly and severely due to the sum of heat emitted from the plurality of battery cells in a narrow space.
- a battery module including a plurality of battery cells and a battery pack equipped with such a battery module high output can be obtained, but it is not easy to remove heat generated from the battery cells during charging and discharging. If the heat dissipation of the battery cell is not performed properly, the battery cell deteriorates rapidly, shortens its lifespan, and increases the possibility of explosion or ignition.
- battery modules included in vehicle battery packs are frequently exposed to direct sunlight and may be placed in high temperature conditions such as summer or desert areas.
- the problem to be solved by the present invention is to provide a battery pack with improved sealing for preventing leakage of refrigerant and assembly in the process of implementing the cooling structure in a water-cooled cooling structure, and a device including the same.
- a battery pack includes a battery module; a pack frame accommodating the battery module and having a through-hole formed on one surface thereof; a cooling port inserted into the through hole; a cooling connector located inside the pack frame and connected to the cooling port; a cover member coupled to the cooling port and having an opening; and a pack refrigerant pipe connected to the cooling connector.
- the cooling port includes a plate-shaped base portion and a first tube protruding from the base portion in a first direction and passing through the through hole.
- the base part includes a base protrusion formed on one surface of the base part in the first direction.
- a sealing member is positioned between the opening of the cover member and the base protrusion.
- the cooling connector may be coupled to the first tube.
- An outer peripheral protrusion protruding in an outer circumferential direction may be formed on an outer circumferential surface of the first tube.
- the cooling connector may be engaged with the outer circumferential protrusion.
- the sealing member may be positioned between an inner circumferential surface of the opening and an outer circumferential surface of the base protrusion.
- An inner diameter of the opening may be larger than a diameter of the base protrusion, so that a space in which the sealing member is seated may be formed between the opening and the base protrusion.
- the cover member may be coupled to the one surface of the base portion in the first direction so that the first tube and the base protrusion pass through the opening.
- the cover member may be positioned between the outer surface of the pack frame and the base portion.
- the cover member may be mounted to the base part through hook coupling.
- the cooling port may include a second tube protruding from the base in a second direction opposite to the first direction.
- An interior of the first tube and an interior of the second tube may be connected to each other, and a refrigerant may flow between the interior of the first tube and the interior of the second tube.
- a space in which a sealing member is located can be naturally formed through the coupling of the cooling port and the cover member, so that the airtightness of the refrigerant circulation structure can be improved and structural simplification can be achieved.
- FIG. 1 is an exploded perspective view showing a battery pack according to an embodiment of the present invention.
- FIG. 2 is a perspective view showing one of the battery modules included in the battery pack of FIG. 1;
- FIG. 3 is an exploded perspective view showing a state in which the module frame is removed for the battery module of FIG. 2 .
- Figure 4 is a perspective view showing one of the battery cells included in the battery module of Figure 3;
- FIG 5 and 6 are partial perspective views illustrating a coupling relationship between a cooling port, a cover member, and a cooling connector according to an embodiment of the present invention.
- FIG. 7 is a perspective view showing a cooling port according to an embodiment of the present invention.
- FIG. 8 is a perspective view illustrating a state in which a cooling port and a cover member are coupled according to an embodiment of the present invention.
- FIG. 9 is a perspective view respectively showing a cooling port and a cover member according to an embodiment of the present invention.
- FIG. 10 is a perspective view illustrating a state in which a cooling port, a cover member, and a sealing member are coupled according to an embodiment of the present invention.
- FIG. 11 is a partial perspective view showing a state before coupling the first tube of the cooling port and the cooling connector inside the pack frame.
- Fig. 12 is a cross-sectional view showing a cross section taken along the cutting line A-A' in Fig. 11;
- FIG. 13 is a perspective view showing a cooling port according to a comparative example of the present invention.
- FIG. 14 is a partial perspective view illustrating a cooling port, a coupling bracket, and a sealing member according to another comparative example of the present invention.
- a part such as a layer, film, region, plate, etc.
- a part when 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 “on” or “on” in the opposite direction of gravity does not mean not.
- 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.
- FIG. 1 is an exploded perspective view showing a battery pack according to an embodiment of the present invention.
- 2 is a perspective view showing one of the battery modules included in the battery pack of FIG. 1;
- 3 is an exploded perspective view showing a state in which the module frame is removed for the battery module of FIG. 2 .
- Figure 4 is a perspective view showing one of the battery cells included in the battery module of Figure 3;
- the battery pack 1000 includes a battery module 100 and a pack frame 200 accommodating the battery module 100 .
- the number of battery modules 100 accommodated in the pack frame 200 and one or a plurality of battery modules 100 may be accommodated.
- the battery module 100 may include a plurality of battery cells 110 and a module frame 120 in which the battery cells 110 are accommodated.
- the battery cell 110 may be a pouch type battery cell.
- a pouch-type battery cell may be formed by accommodating an electrode assembly in a pouch case of a laminate sheet including a resin layer and a metal layer, and then fusing the outer periphery of the pouch case.
- These battery cells 110 may be formed in a rectangular sheet structure.
- the battery cell 110 has two electrode leads 111 and 112 facing each other so that one end 114a and the other end 114b of the battery body 113 face each other. ) may have a structure protruding from each.
- the battery cell 110 is manufactured by adhering both ends 114a and 114b of the battery case 114 and one side portion 114c connecting them in a state in which an electrode assembly (not shown) is accommodated in the battery case 114. It can be.
- the battery cell 110 has a total of three sealing parts 114sa, 114sb, and 114sc, and the sealing parts 114sa, 114sb, and 114sc are sealed by a method such as fusion. structure, and the other side may be made of the connecting portion 115.
- a space between both ends 114a and 114b of the battery case 114 is defined in the longitudinal direction of the battery cell 110, and one side portion 114c and a connection portion connecting both ends 114a and 114b of the battery case 114 (115) can be defined in the width direction of the battery cell (110).
- the battery cell 110 described above is an exemplary structure, and a unidirectional battery cell in which two electrode leads protrude in the same direction is of course possible.
- the battery cell 110 may be composed of a plurality, and the plurality of battery cells 110 may be stacked so as to be electrically connected to each other. For example, as shown in FIG. 3 , a plurality of battery cells 110 may be stacked along a direction parallel to the y-axis.
- the battery case 114 generally has a laminate structure of a resin layer/metal thin film layer/resin layer. For example, when the battery case surface is made of an O (oriented)-nylon layer, when a plurality of battery cells 110 are stacked to form a medium or large battery module, they tend to slide easily due to external impact. .
- an adhesive member such as adhesive adhesive such as double-sided tape or chemical adhesive bonded by a chemical reaction during adhesion is attached to the surface of the battery case, and the battery cell 110 ) can be stacked.
- the module frame 120 as a structure for accommodating a plurality of battery cells 110, may be a mono frame in the form of a metal plate material in which the top, bottom and both sides are integrated.
- this is an exemplary structure, and a form in which an upper cover is bonded to a U-shaped frame with an open top or a form in which a U-shaped frame and an inverted U-shaped frame are coupled to each other are all possible.
- the battery module 100 may further include a bus bar frame 130 and a bus bar 140 mounted on the bus bar frame 130 .
- the bus bar frame 130 may be located on one side (x-axis direction) and the other side (-x-axis direction) of the battery cells 110, respectively.
- One side (x-axis direction) and the other side (-x-axis direction) may correspond to directions in which the electrode leads 111 and 112 of the battery cell 110 protrude.
- a lead slit is formed in the bus bar frame 130 , and electrode leads 111 and 112 of the battery cell 110 pass through the lead slit and then are bent and bonded to the bus bar 140 . If physical and electrical connection is possible, there is no particular limitation on the bonding method, and welding bonding may be performed as an example. That is, the battery cells 110 may be electrically connected to each other via the bus bar 140 .
- the battery pack 1000 according to the present embodiment may further include a heat sink 100S located on one side of the battery module 100 .
- a heat sink 100S may be located under each battery module 100 .
- the heat sink 100S is a component through which a refrigerant flows, and serves to cool the battery module 100 generating heat.
- the battery pack 1000 according to the present embodiment includes a pack coolant pipe 700 accommodated in the pack frame 200 .
- the pack refrigerant pipe 700 may be connected to the heat sink 100S, and may supply refrigerant into the heat sink 100S or discharge refrigerant from the heat sink 100S. That is, the pack refrigerant pipe 700 may be provided for the refrigerant circulation structure of the heat sink 100S.
- a pack cover 900 may be positioned above the pack frame 200 .
- Other electrical components including the battery module 100, the heat sink 100S, and the pack refrigerant pipe 700 described above may be accommodated between the pack frame 200 and the pack cover 900.
- FIG. 5 and 6 are partial perspective views illustrating a coupling relationship between a cooling port, a cover member, and a cooling connector according to an embodiment of the present invention.
- FIG. 6 the illustration of the pack refrigerant pipe 700 and the cooling connector 600 of FIG. 5 is omitted.
- a through hole 200H is formed on one side of the pack frame 200.
- the battery pack 1000 according to this embodiment includes a cooling port 300 inserted into the through hole 200H; A cooling connector 600 located inside the pack frame 200 and connected to the cooling port 300; It includes a cover member 400 coupled to the cooling port 300 and having an opening formed therein.
- the pack refrigerant pipe 700 is connected to the cooling connector 600. That is, the pack refrigerant pipe 700 may connect the heat sink 100S and the cooling connector 600 .
- the heat sink 100S of the battery module 100, the pack coolant pipe 700, and the cooling connector 600 may be sequentially connected.
- the cooling port 300 may be connected to a refrigerant supply/discharge system on the outside of the pack frame 200 .
- the cooling port 300 and the cooling connector 600 may be connected to each other through a through hole 200H formed in the pack frame 200 . That is, the cooling port 300, the cooling connector 600, the pack refrigerant pipe 700, and the heat sink 100S are sequentially connected to cool the battery module 100 inside the battery pack 1000. can form
- FIG. 7 is a perspective view showing a cooling port according to an embodiment of the present invention.
- 8 is a perspective view illustrating a state in which a cooling port and a cover member are coupled according to an embodiment of the present invention.
- 9 is a perspective view respectively showing a cooling port and a cover member according to an embodiment of the present invention.
- 10 is a perspective view illustrating a state in which a cooling port, a cover member, and a sealing member are coupled according to an embodiment of the present invention. In FIGS. 8 and 10 , shading is applied to the cover member 400 for convenience of explanation.
- the cooling port 300 protrudes from the plate-shaped base portion 330 and the base portion 330 in the first direction d1.
- a first pipe 310 passing through the through hole 200H of the pack frame 200 is included.
- the first direction d1 may be a direction toward the inside of the pack frame 200 from the through hole 200H.
- the cooling port 300 may further include a second tube 320 protruding from the base portion 330 in a second direction d2 opposite to the first direction d1.
- the second direction may be a direction toward the outside of the pack frame 200 from the through hole 200H.
- the inside of the first pipe 310 and the inside of the second pipe 320 are connected to each other, and the refrigerant may flow between the inside of the first pipe 310 and the inside of the second pipe 320 .
- the base portion 330 includes a base protrusion 330P formed on one surface of the base portion 330 in the first direction d1 .
- the base portion 330 is shown as a plate-shaped member having rounded corners, but if it is a plate-shaped member, the shape is not particularly limited.
- the cover member 400 having the opening 410H is coupled to the cooling port 300 .
- the sealing member 500 is positioned between the opening 410H of the cover member 400 and the base protrusion 330P.
- the sealing member 500 is an O-ring member and prevents leakage of refrigerant between the cooling port 300 and the through hole 200H.
- the cover member 400 may be coupled to one surface of the base portion 330 in the first direction d1 such that the first tube 310 and the base protrusion 330P pass through the opening 410H. . Accordingly, as shown in FIG. 6 , the cover member 400 may be positioned between the outer surface of the pack frame 200 and the base portion 330 of the cooling port 300 .
- the opening 410H may have a circular hole shape, and the base protrusion 330P may also have a cylindrical protrusion corresponding thereto.
- the inner diameter dm1 of the opening 410H is larger than the diameter dm2 of the base protrusion 330P, so that a space in which the sealing member 500 is seated may be formed between the opening 410H and the base protrusion 330P.
- the sealing member 500 according to the present embodiment may be positioned between the inner circumferential surface of the opening 410H and the outer circumferential surface of the base protrusion 330P.
- the sealing member 500 is fixed between the inner circumferential surface of the opening 410H and the outer circumferential surface of the base protrusion 330P to prevent outflow of refrigerant between the cooling port 300 and the outer surface of the pack frame 200. can block
- the refrigerant in this specification is a medium for cooling, and is not particularly limited, but may be, for example, cooling water. That is, the battery pack 1000 according to the present embodiment may have a water-cooled cooling structure.
- the cover member 400 and the base part 330 according to the present embodiment may be fastened by a physical method.
- the cover member 400 according to the present embodiment may be mounted to the base portion 330 through hook coupling.
- a hook protrusion 330HP may be formed on each side of the base portion 330, and a hook groove 420H may be formed in the cover member 400 to correspond to the hook protrusion 330HP.
- the cover member 400 and the base portion 330 may be hook-coupled in such a way that the hook protrusion 330HP is inserted into the hook groove 420H.
- a hook protrusion may be formed in the cover member and a hook groove may be formed in the base portion.
- FIG. 11 is a partial perspective view showing a state before coupling the first tube of the cooling port and the cooling connector inside the pack frame.
- Fig. 12 is a cross-sectional view showing a cross section taken along the cutting line A-A' in Fig. 11; In particular, FIG. 12 is a cross-sectional view assuming that the cooling connector 600 and the first tube 310 of the cooling port 300 in FIG. 11 are coupled to each other.
- the cooling connector 600 in a state where the first tube 310 of the cooling port 300 according to the present embodiment passes through the through hole 200H of the pack frame 200, the cooling connector 600 It may be coupled to the first tube 310. Also, as described above, the cooling connector 600 may be connected to the pack refrigerant pipe 700. Meanwhile, on the outside of the pack frame 200, the sealing member 500 is positioned between the inner circumferential surface of the opening 410H and the outer circumferential surface of the base protrusion 330P.
- An outer circumferential protruding portion 310P protruding in an outer circumferential direction may be formed on an outer circumferential surface of the first tube 310
- an inner circumferential protruding portion 600P may be formed on an inner circumferential surface of the cooling connector 600 .
- FIG. 12 when the first tube 310 is inserted into the cooling connector 600, the inner protrusion 600P of the cooling connector 600 is caught by the outer protrusion 310P of the first tube 310. can be combined In this way, the first tube 310 and the cooling connector 600 may be coupled to each other inside the pack frame 200 .
- a base hole 330H may be formed in the base portion 330 according to the present embodiment, and a bolt portion may be formed on the outer surface of the pack frame 200. 800 may be located. After the bolt unit 800 passes through the base hole 330H, it may be coupled to the nut unit 800N. That is, the base part 330 may be fixed to the pack frame 200 in a bolt/nut coupling method.
- the triangular shape of the base portion 330 is shown, the shape is not particularly limited as long as it has a plate shape so as to be fixed to the pack frame 200. There is no particular limitation on the number of base holes 330H.
- the second tube 320 protrudes from the through hole 200H in the second direction d2 toward the outside of the pack frame 200, and extends outside the battery pack 1000. It can be connected to a refrigerant supply/discharge system. For example, it may be connected to an external cooling pipe or a cooling motor.
- FIG. 13 is a perspective view showing a cooling port according to a comparative example of the present invention.
- a cooling port 30a may include a first tube 31a, a second tube 32a, and a base portion 33a.
- the first tube 31a protrudes in a first direction d1
- the second tube 32a protrudes in a second direction d2 opposite to the first direction d1.
- the interior of the first tube 31a and the interior of the second tube 32a are connected to each other, so that the refrigerant can flow into the interior of the first tube 31a and the interior of the second tube 32a.
- An outer circumferential protruding portion 31aP protruding in an outer circumferential direction may be formed in the first tube 31a to be coupled with the cooling connector.
- a recessed groove 33G may be formed in the base portion 33a so that an O-ring type sealing member (not shown) may be mounted.
- an injection molding method may be used.
- the first direction d1 or the second direction (d2) has no choice but to take out the mold.
- the outer peripheral protrusion 31aP protrudes in directions perpendicular to the first and second directions d1 and d2.
- FIG. 14 is a partial perspective view illustrating a cooling port, a coupling bracket, and a sealing member according to another comparative example of the present invention.
- a cooling port 30b may include a first tube 31b, a second tube 32b, and a base portion 33b.
- the first tube 31b protrudes in the first direction d1
- the second tube 32b protrudes in the second direction d2 opposite to the first direction d1.
- the inside of the first pipe (31b) and the inside of the second pipe (32b) are connected to each other, so that the refrigerant can flow inside the first pipe (31b) and the inside of the second pipe (32b).
- the first tube 31b may pass through the through hole 20H of the pack frame 20 .
- An outer circumferential protrusion 31bp protruding in an outer circumferential direction may be formed in the first tube 31b to be coupled with the cooling connector.
- a separate coupling bracket 40b is added instead of forming a recessed groove in the base portion 33b of the cooling port 30b.
- the coupling bracket 40b is located between the outer surface of the pack frame 20 and the base portion 33b.
- An opening hole 40H is formed in the coupling bracket 40b, and the first tube 31b may pass through the opening hole 40H.
- O-ring shaped sealing members 50b1 and 50b2 may be positioned between the coupling bracket 40b and the base portion 33b and between the coupling bracket 40b and the outer surface of the pack frame 20, respectively.
- Bracket recessed grooves 40G may be formed on both sides of the coupling bracket 40b so that the sealing members 50b1 and 50b2 may be seated.
- the manufacturing process becomes complicated because the assembly positions between the two sealing members 50b1 and 50b2, the coupling bracket 40b, and the base portion 33b must be precisely set in the coupling process between the parts.
- the increase in the area where the sealing members 50b1 and 50b2 are required means, in other words, the increase in the area where the refrigerant can leak out. That is, it can be seen that the airtightness for preventing leakage of the refrigerant is deteriorated.
- the cooling port 300 can naturally provide a space where the sealing member 500 is located through coupling with the cover member 400 . Therefore, defects such as undercuts do not occur in the manufacturing process, and there is no need for additional sealing members to be interposed. This leads to the advantage of reducing the cost by reducing the required configuration and self-control.
- the structure is simplified and the manufacturing process is simple.
- the cooling port 30b of FIG. 14 since an area requiring a sealing member is reduced, the risk of refrigerant leakage is reduced.
- One or more battery modules according to the present embodiment described above may be mounted together with various control and protection systems such as a battery management system (BMS), a battery disconnect unit (BDU), and a cooling system to form a battery pack.
- BMS battery management system
- BDU battery disconnect unit
- the battery pack may be applied to various devices. Specifically, it can be applied to means of transportation such as electric bicycles, electric vehicles, hybrids, or energy storage systems (ESS), but is not limited thereto and can be applied to various devices that can use secondary batteries.
- means of transportation such as electric bicycles, electric vehicles, hybrids, or energy storage systems (ESS), but is not limited thereto and can be applied to various devices that can use secondary batteries.
- ESS energy storage systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims (12)
- 전지 모듈;상기 전지 모듈을 수납하고, 일면에 관통구가 형성된 팩 프레임;상기 관통구에 삽입되는 냉각 포트;상기 팩 프레임의 내부에 위치하고, 상기 냉각 포트와 연결되는 냉각 커넥터;상기 냉각 포트와 결합되고, 개구부가 형성된 커버 부재; 및상기 냉각 커넥터와 연결되는 팩 냉매관을 포함하고,상기 냉각 포트는, 판상형의 베이스부 및 상기 베이스부로부터 제1 방향으로 돌출되어 상기 관통구를 통과하는 제1 관을 포함하며,상기 베이스부는, 상기 베이스부의 상기 제1 방향의 일면에 형성된 베이스 돌출부를 포함하고,상기 커버 부재의 상기 개구부와 상기 베이스 돌출부 사이에 실링 부재가 위치하는 전지팩.
- 제1항에서,상기 제1 관이 상기 관통구를 통과한 상태에서, 상기 냉각 커넥터가 상기 제1 관에 결합되는 전지팩.
- 제2항에서,상기 제1 관의 외주면에 외주 방향으로 돌출된 외주 돌출부가 형성되는 전지팩.
- 제3항에서,상기 냉각 커넥터는 상기 외주 돌출부에 걸림 결합되는 전지팩.
- 제1항에서,상기 개구부의 내주면과 상기 베이스 돌출부의 외주면 사이에 상기 실링 부재가 위치하는 전지팩.
- 제1항에서,상기 개구부의 내경은 상기 베이스 돌출부의 직경보다 크게 구성되어, 상기 개구부와 상기 베이스 돌출부 사이에 상기 실링 부재가 안착되는 공간이 형성되는 전지팩.
- 제1항에서,상기 커버 부재는, 상기 제1 관과 상기 베이스 돌출부가 상기 개구부를 통과하도록, 상기 베이스부의 상기 제1 방향의 상기 일면에 결합되는 전지팩.
- 제1항에서,상기 팩 프레임의 외면과 상기 베이스부 사이에 상기 커버 부재가 위치하는 전지팩.
- 제1항에서,상기 커버 부재는, 상기 베이스부에 후크 결합으로 장착되는 전지팩.
- 제1항에서,상기 냉각 포트는, 상기 베이스부로부터 상기 제1 방향과 반대되는 제2 방향으로 돌출되는 제2 관을 포함하는 전지팩.
- 제10항에서,상기 제1 관의 내부와 상기 제2 관의 내부가 서로 연결되고,상기 제1 관의 내부와 상기 제2 관의 내부에 냉매가 흐르는 전지팩.
- 제1항에 따른 전지팩을 포함하는 디바이스.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP22842387.7A EP4290653A4 (en) | 2021-07-12 | 2022-07-08 | BATTERY PACK AND DEVICE |
JP2023552558A JP2024508504A (ja) | 2021-07-12 | 2022-07-08 | 電池パックおよびそれを含むデバイス |
US18/282,895 US20240170755A1 (en) | 2021-07-12 | 2022-07-08 | Battery pack and device including the same |
CN202280022020.1A CN116998050A (zh) | 2021-07-12 | 2022-07-08 | 电池组和包括该电池组的装置 |
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KR1020210091134A KR20230010501A (ko) | 2021-07-12 | 2021-07-12 | 전지팩 및 이를 포함하는 디바이스 |
KR10-2021-0091134 | 2021-07-12 |
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WO2023287125A1 true WO2023287125A1 (ko) | 2023-01-19 |
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US (1) | US20240170755A1 (ko) |
EP (1) | EP4290653A4 (ko) |
JP (1) | JP2024508504A (ko) |
KR (1) | KR20230010501A (ko) |
CN (1) | CN116998050A (ko) |
WO (1) | WO2023287125A1 (ko) |
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KR20120012648A (ko) * | 2010-08-02 | 2012-02-10 | (주)브이이엔에스 | 전기자동차 |
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KR20220060817A (ko) * | 2020-11-05 | 2022-05-12 | 주식회사 엘지에너지솔루션 | 쿨런트 포트 어셈블리 |
KR20220080621A (ko) * | 2020-12-07 | 2022-06-14 | 주식회사 엘지에너지솔루션 | 배터리 팩 및 이러한 배터리 팩을 포함하는 자동차 |
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- 2021-07-12 KR KR1020210091134A patent/KR20230010501A/ko active Search and Examination
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- 2022-07-08 US US18/282,895 patent/US20240170755A1/en active Pending
- 2022-07-08 CN CN202280022020.1A patent/CN116998050A/zh active Pending
- 2022-07-08 WO PCT/KR2022/009995 patent/WO2023287125A1/ko active Application Filing
- 2022-07-08 JP JP2023552558A patent/JP2024508504A/ja active Pending
- 2022-07-08 EP EP22842387.7A patent/EP4290653A4/en active Pending
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KR20230010501A (ko) | 2023-01-19 |
EP4290653A4 (en) | 2024-07-10 |
EP4290653A1 (en) | 2023-12-13 |
JP2024508504A (ja) | 2024-02-27 |
US20240170755A1 (en) | 2024-05-23 |
CN116998050A (zh) | 2023-11-03 |
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