WO2015170852A1 - 홀드다운 브라켓을 포함하는 전지팩 - Google Patents
홀드다운 브라켓을 포함하는 전지팩 Download PDFInfo
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- WO2015170852A1 WO2015170852A1 PCT/KR2015/004380 KR2015004380W WO2015170852A1 WO 2015170852 A1 WO2015170852 A1 WO 2015170852A1 KR 2015004380 W KR2015004380 W KR 2015004380W WO 2015170852 A1 WO2015170852 A1 WO 2015170852A1
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- Prior art keywords
- battery
- battery pack
- base plate
- battery module
- bracket
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
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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
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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
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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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
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
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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
- H01M50/271—Lids or covers for the racks or secondary casings
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
- H01M50/51—Connection only in series
-
- 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
- H01M50/514—Methods for interconnecting adjacent batteries or cells
- H01M50/517—Methods for interconnecting adjacent batteries or cells by fixing means, e.g. screws, rivets or bolts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2270/00—Problem solutions or means not otherwise provided for
- B60L2270/10—Emission reduction
- B60L2270/14—Emission reduction of noise
- B60L2270/142—Emission reduction of noise acoustic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/66—Arrangements of batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/80—Exchanging energy storage elements, e.g. removable batteries
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
-
- 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
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/002—Inorganic electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
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- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
Definitions
- the present invention relates to a battery pack including a hold down bracket.
- the secondary battery In order to use the secondary battery as a power source such as EV and HEV, a high output large capacity is required.
- a plurality of small secondary batteries (unit cells) are connected in series, or in some cases, a battery module connected in series and in parallel. And a battery pack.
- such a battery pack is a structure for protecting battery modules in which secondary batteries are built, and has a variety of forms depending on the type of the target vehicle or the mounting position of the vehicle.
- a structure for effectively fixing a large capacity battery module is a structure based on a supporting bar and an end plate. This structure has an advantage of minimizing the movement of the battery module even when a load is applied in the direction of the supporting bar, but for this purpose, there is a problem that the rigidity of the supporting bar and the end plate must be sufficiently secured.
- Figure 1 is a perspective view of a conventional battery pack consisting of one battery module by way of example.
- the battery pack 100 includes unit modules 10 in which battery cells are built, a base plate 20, a pair of end plates 30, and a supporting bar 40. .
- the unit modules 10 are vertically stacked on the upper part of the base plate 20, and the end plates 30 are outer surfaces of the outermost unit modules 10 with the lower end fixed to the base plate 20. It is in close contact with.
- the supporting bar 40 connects the upper both sides of the end plates 30 to interconnect and support the pair of end plates 30.
- the battery pack having the above structure does not include a structure capable of supporting the battery pack in the front-rear direction when the external force is applied in the front-back direction of the battery pack, and further, each of the battery cells constituting the unit module Since it does not include a structure for stably fixing, there is a problem that can not prevent deformation of the internal structure of the battery pack.
- the present invention aims to solve the problems of the prior art as described above and the technical problems that have been requested from the past.
- An object of the present invention is to include a hold down bracket for fixing each battery module of the battery module assembly to the base plate in position, it is possible to stably fix the battery modules, in particular, against vibration from the external force in the front and rear direction It is to provide a battery pack structure that can minimize the deformation of the battery pack.
- Two or more battery modules including battery cells arranged in an upright state with the electrode terminals facing upwards are arranged in a state adjacent to each other, the battery has an outward protrusion formed on the lower end of one side or both sides of the battery module Module assembly;
- a base plate on which the battery module assembly is mounted
- a holddown bracket having a structure in which one side surrounds the outward protrusion of the battery module and the other side is coupled to the base plate to fix each battery module of the battery module assembly to the base plate in position;
- Consists of a structure comprising a.
- an outward protrusion is formed at one end of the side or both sides of the battery module, and one side part of the structure holds the outward protrusion of the battery module and the other side is coupled to the base plate.
- the battery module in the present invention may be a battery module itself or a small module having two or more battery cells therein.
- the battery cell is preferably a plate-shaped battery cell in order to provide a high lamination rate in a limited space, for example, it may be made of a structure in which the electrode assembly is built in the battery case of the laminate sheet.
- An example of a battery module having two or more battery cells therein may be a module of Korean Patent Application No. 2006-12303.
- the battery module in the above application has a structure mounted on the frame member in which the input / output terminals are formed in close contact with two battery cells facing each other.
- the battery module may be the modules of the applicant's Korean Patent Application Nos. 2006-20772 and 2006-45444.
- the battery module in these applications consists of a structure in which two secondary batteries are covered with a pair of high-strength cell covers while their outer surfaces are in close contact with each other.
- the battery module has a structure in which at least two unit modules in which at least one battery cell is built in the cartridge are arranged in a state adjacent to each other, and the battery cells of the battery module are connected in series. Can be.
- the cartridge is composed of a frame for fixing the outer circumferential surface sealing portion of the battery cells located on both sides, it may be of a structure in which an outward protrusion is formed on the lower end of one side or both sides of the frame.
- the outward protrusion may include a structure in which fasteners into which the fastening member for fixing the battery cell assembly is inserted are punctured, and the fastening member may be configured to connect and fix the battery cells.
- the battery module is formed with an indentation portion is fixed to the hold down bracket of the structure in which one side surrounds the outward protrusion of the battery module and the other side is coupled to the base plate, the hold down bracket is fixed to the indentation shape It may be configured to have a structure in which the additional portion is formed to be capable of stably fixing the battery modules to the base plate against the vibration in the front and rear direction applied to the battery pack.
- the battery pack is mounted in a limited space according to the device to which it is applied, it is important to configure the battery pack so that the maximum capacity can be exerted in a predetermined space. It depends greatly on the configuration method of the.
- the mounting space of the battery pack is limited due to vehicle parts arranged at a high density, and thus the battery pack may be mounted in a narrow space such as between a driver's seat and an auxiliary seat.
- the battery module may have a rectangular parallelepiped structure or a tunnel type structure having a large height in comparison with the width and a large length in front and rear with respect to the height.
- the cartridge is preferably formed in a size and shape corresponding to the mounting position in a device such as a vehicle, for example, a rectangular parallelepiped shape having a height that is relatively larger than a bottom width in a state where it is mounted on a base plate is preferable.
- the outward protrusion formed on the lower end of the battery module assembly is a structure for stably fixed to the base plate, at least a portion of the bottom surface of the outward protrusion may be configured to be inclined upward toward the battery module, the outward protrusion The lowest end of the can be configured to include a structure including a downward extension protruding in the base plate direction, due to this structure can be stably fixed between the hold down bracket and the base plate.
- the outward protrusion of the battery module assembly includes an indentation to be fixed to the hold-down bracket
- the hold-down bracket has a structure that includes a fixing portion of the shape to engage the indentation
- the battery module assembly may be configured to stably fix the battery modules assembly to the base plate against vibration in the front and rear directions applied to the battery pack.
- the hold down bracket may be a structure including a structure for increasing the rigidity against the vibration applied from the outside, for example, it is composed of a structure in which a bead is formed between one side and the other side of the hold down bracket Can increase the rigidity.
- the combination of the hold down bracket and the base plate is composed of a structure in which one or more through grooves for joining the base plate are drilled in the other side of the hold down bracket, and a fastening member is inserted into and coupled to the through groove. Can be.
- the fastening member may vary, but may be, for example, bolts or screws, but is not limited thereto.
- the battery pack may include a top cover coupled to the base plate while surrounding the battery cell assembly while the battery module assembly is mounted on the base plate, and the battery module assembly is attached to the base plate by a hold down bracket. It may be a completed structure by combining the cover in a fixed state.
- the battery cell may be a lithium ion battery or a lithium secondary battery, but is not limited thereto.
- the lithium secondary battery is composed of a positive electrode, a negative electrode, a separator, and a lithium salt-containing nonaqueous electrolyte.
- the positive electrode is prepared by, for example, applying a mixture of a positive electrode active material, a conductive material, and a binder to a positive electrode current collector, followed by drying, and optionally, a filler is further added to the mixture.
- the conductive material is typically added in an amount of 1 to 30 wt% based on the total weight of the mixture including the positive electrode active material.
- a conductive material is not particularly limited as long as it has conductivity without causing chemical change in the battery, and examples thereof include graphite such as natural graphite and artificial graphite; Carbon blacks such as carbon black, acetylene black, Ketjen black, channel black, furnace black, lamp black, and summer black; Conductive fibers such as carbon fibers and metal fibers; Metal powders such as carbon fluoride powder, aluminum powder and nickel powder; Conductive whiskeys such as zinc oxide and potassium titanate; Conductive metal oxides such as titanium oxide; Conductive materials such as polyphenylene derivatives and the like can be used.
- the binder is a component that assists the bonding of the active material and the conductive material to the current collector, and is generally added in an amount of 1 to 30 wt% based on the total weight of the mixture including the positive electrode active material.
- binders include polyvinylidene fluoride, polyvinyl alcohol, carboxymethyl cellulose (CMC), starch, hydroxypropyl cellulose, regenerated cellulose, polyvinylpyrrolidone, tetrafluoroethylene, polyethylene , Polypropylene, ethylene-propylene-diene terpolymer (EPDM), sulfonated EPDM, styrene butylene rubber, fluorine rubber, various copolymers and the like.
- the filler is optionally used as a component for inhibiting expansion of the positive electrode, and is not particularly limited as long as it is a fibrous material without causing chemical change in the battery.
- the filler include olefinic polymers such as polyethylene and polypropylene; Fibrous materials, such as glass fiber and carbon fiber, are used.
- the negative electrode is manufactured by coating and drying a negative electrode active material on a negative electrode current collector, and optionally, the components as described above may optionally be further included.
- carbon such as hardly graphitized carbon and graphite type carbon
- the separator is interposed between the anode and the cathode, and an insulating thin film having high ion permeability and mechanical strength is used.
- the pore diameter of the separator is generally from 0.01 to 10 ⁇ m ⁇ m, thickness is generally 5 ⁇ 300 ⁇ m.
- a separator for example, olefin polymers such as chemical resistance and hydrophobic polypropylene; Sheets or non-woven fabrics made of glass fibers or polyethylene are used.
- a solid electrolyte such as a polymer
- the solid electrolyte may also serve as a separator.
- the lithium salt-containing non-aqueous electrolyte solution consists of a polar organic electrolyte solution and a lithium salt.
- a non-aqueous liquid electrolyte an organic solid electrolyte, an inorganic solid electrolyte, and the like are used.
- N-methyl- 2-pyrrolidinone a propylene carbonate, ethylene carbonate, butylene carbonate, dimethyl carbonate, diethyl carbonate, gamma
- Butyl lactone 1,2-dimethoxy ethane, tetrahydroxy franc, 2-methyl tetrahydrofuran, dimethyl sulfoxide, 1,3-dioxorone, formamide, dimethylformamide, dioxolon , Acetonitrile, nitromethane, methyl formate, methyl acetate, phosphate triester, trimethoxy methane, dioxorone derivatives, sulfolane, methyl sulfolane, 1,3-dimethyl-2-imidazolidinone, propylene carbo Aprotic organic solvents such as nate derivatives, tetrahydrofuran derivatives, ethers, methyl pyroionate and eth
- organic solid electrolyte examples include polyethylene derivatives, polyethylene oxide derivatives, polypropylene oxide derivatives, phosphate ester polymers, polyedgetion lysine, polyester sulfides, polyvinyl alcohols, polyvinylidene fluorides, Polymers containing ionic dissociating groups and the like can be used.
- Examples of the inorganic solid electrolyte include Li 3 N, LiI, Li 5 NI 2 , Li 3 N-LiI-LiOH, LiSiO 4 , LiSiO 4 -LiI-LiOH, Li 2 SiS 3 , Li 4 SiO 4 , Li 4 SiO 4 -LiI-LiOH, Li 3 PO 4 -Li 2 has a nitride, halides, sulfates, such as Li, such as S-SiS 2 can be used.
- the lithium salt is a good material to be dissolved in the non-aqueous electrolyte, for example, LiCl, LiBr, LiI, LiClO 4 , LiBF 4 , LiB 10 Cl 10 , LiPF 6 , LiCF 3 SO 3 , LiCF 3 CO 2 , LiAsF 6, LiSbF 6, LiAlCl 4, CH 3 SO 3 Li, CF 3 SO 3 Li, (CF 3 SO 2) 2 NLi, chloroborane lithium, lower aliphatic carboxylic acid lithium, lithium tetraphenyl borate and imide have.
- the non-aqueous electrolyte solution includes, for example, pyridine, triethyl phosphite, triethanolamine, cyclic ether, ethylene diamine, n-glyme, and hexaphosphate triamide.
- halogen-containing solvents such as carbon tetrachloride and ethylene trifluoride may be further included, and carbon dioxide gas may be further included to improve high temperature storage characteristics.
- the present invention may also provide a device including the battery pack as a power source, wherein the device may be selected from an electric vehicle, a hybrid electric vehicle, or a plug-in hybrid electric vehicle.
- FIG. 1 is a perspective view showing a conventional battery pack
- FIG. 2 is an exploded perspective view of a battery pack according to an embodiment of the present invention.
- FIG. 3 is a perspective view of a battery module and a hold down bracket according to one embodiment of the present invention.
- FIG. 4 is a side perspective view of a battery module to which a hold down bracket is coupled according to one embodiment of the present invention
- 5 and 6 are cross-sectional views taken along line A-A 'and B-B' of FIG. 4.
- FIG. 2 is an exploded perspective view schematically showing a battery pack according to an embodiment of the present invention
- Figure 3 is a perspective view of a battery module and a hold down bracket according to an embodiment of the present application. Is shown.
- the battery pack 200 is arranged in a state where two or more battery modules 211 including battery cells (not shown) arranged in an upright state with their electrode terminals facing upwards.
- the battery module assembly 210 having the outward protrusion 220 formed at the lower ends of both sides of the battery module 211, the base plate 230 and the battery module assembly mounted on the battery module assembly 210, respectively.
- one portion of the structure surrounding the outward protrusion 220 of the battery module and the other portion of the structure coupled to the base plate 230 It is configured to include a hold down bracket 240.
- the battery pack 200 Since the battery pack 200 has a limited mounting space due to vehicle components disposed at a high density, the battery module assembly 210 forming the battery pack 200 may be mounted in a narrow space such as between a driver's seat and an auxiliary seat.
- the height (H) is large compared to the width (W) and the length (L) of the front and rear relative to the height (H) has a large structure, the battery pack 200 has a rectangular parallelepiped structure corresponding thereto.
- Each battery module 211 constituting the battery module assembly 210 is arranged side by side so that the battery cells are adjacent to each other, these battery cells are each fixed to the cartridge 250 is formed in a side stacked structure.
- the battery cells are arranged side by side so that the electrode terminals protrude upward, and the cartridge 250 has a frame structure for fixing the outer circumferential sealing of the battery cell.
- an indentation 260 is formed to which the outward protrusion 220 and the hold-down bracket 240 are fixed, and a fastening member (not shown) for fixing the battery cell assembly 210.
- Fasteners 280 into which are inserted are additionally drilled. Accordingly, the fastening member is inserted into the fasteners 280 to fix the battery cell assembly 210 having the stacked structure arranged on the side of the cartridge 250.
- the hold down bracket 240 has a corresponding shape and number of fixing parts 270 to be engaged with the indentation 260, and between one side and the other side of the hold down bracket 240 is applied to the vibration applied from the outside.
- a bead structure 290 is formed to increase rigidity.
- through-holes 281 and 282 are formed in the hold-down bracket 240 to engage with the base plate 230, and fastening members (not shown) are inserted into the through-holes 281 and 282. It consists of a structure that is fastened.
- Figure 4 is a side perspective view of the battery module is coupled to the hold down bracket according to an embodiment of the present invention schematically, Figures 5 and 6 for AA 'and B-B' of FIG. A cross-sectional view is schematically shown.
- the outward protrusion 220 is a structure for stably fixed to the base plate 230, the bottom surface is formed in a structure inclined upward toward the battery module 211, the outward protrusion 220 Since the downward extension portion 300 protruding in the direction of the base plate 230 is formed at the lower end of the structure, the outward protrusion 220 and the base plate 230 may be stably fixed.
- the fixing part 270 of the hold down bracket 240 has a shape in close contact with the indentation part 260 of the outward protrusion 220, as shown in FIG. 5C, and the fixing part 270 is formed. In the case of not having a portion, as shown in D of FIG. 6, since the portion is formed in a corresponding shape to closely contact the outer surface of the outward protrusion 220, the flow of the battery module 211 can be prevented.
- the battery pack according to the present invention includes a hold down bracket for fixing each battery module of the battery module assembly to the base plate in position, thereby stably fixing the battery modules and from the external force to the front and rear direction There is an effect that can minimize the deformation inside the battery pack for vibration to.
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Battery Mounting, Suspending (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
Claims (21)
- 전극단자들이 상부를 향하도록 직립된 상태로 배열된 전지셀들을 포함하는 전지모듈 둘 이상이 상호 인접한 상태로 배열되어 있고, 상기 전지모듈의 일 측면 또는 양 측면의 하단부에는 외향 돌출부가 형성되어 있는 전지모듈 어셈블리;상기 전지모듈 어셈블리가 상부에 탑재되는 베이스 플레이트(base plate); 및상기 전지모듈 어셈블리의 각각의 전지모듈을 베이스 플레이트에 정위치 고정하기 위하여, 일측 부위가 전지모듈의 외향 돌출부를 감싸고 타측 부위가 베이스 플레이트에 결합되는 구조의 홀드다운 브라켓(holddown bracket);을 포함하는 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 상기 전지셀은 판상형 전지셀인 것을 특징으로 하는 전지팩.
- 제 2 항에 있어서, 상기 전지셀은 라미네이트 전지케이스에 전극조립체가 내장되어 있는 구조로 이루어진 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 상기 전지모듈은 하나 이상의 전지셀이 카트리지에 내장되어 있는 단위모듈 둘 이상이 상호 인접한 상태로 배열되어 있는 구조로 이루어진 것을 특징으로 하는 전지팩.
- 제 4 항에 있어서, 상기 전지모듈의 전지셀들은 직렬 방식으로 연결되어 있는 것을 특징으로 하는 전지팩.
- 제 4 항에 있어서, 상기 카트리지는 양측에 위치하는 전지셀들의 외주면 실링부를 고정하는 프레임으로 구성된 것을 특징으로 하는 전지팩.
- 제 6 항에 있어서, 상기 프레임의 일 측면 또는 양 측면의 하단부에 외향 돌출부가 형성되어 있는 것을 특징으로 하는 전지팩.
- 제 7 항에 있어서, 상기 외향 돌출부에는 전지셀 어셈블리를 고정하기 위한 체결부재가 삽입되는 체결구들이 천공되어 있는 것을 특징으로 하는 전지팩.
- 제 7 항에 있어서, 상기 외향 돌출부들 사이에는 홀드다운 브라켓에 고정되는 만입부가 형성되어 있는 것을 특징으로 하는 전지팩.
- 제 9 항에 있어서, 상기 홀드다운 브라켓에는 만입부에 맞물리는 형상의 고정부가 형성되어 있는 것을 특징으로 하는 전지팩.
- 제 4 항에 있어서, 상기 카트리지는 베이스 플레이트에 탑재된 상태에서 높이가 하단 너비보다 상대적으로 큰 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 상기 외향 돌출부의 하단면 중의 적어도 일부는 전지모듈 방향으로 상향 경사져 있는 구조로 이루어진 것을 특징으로 하는 전지팩.
- 제 12 항에 있어서, 상기 외향 돌출부의 최하단면은 베이스 플레이트 방향으로 돌출된 하향 연장부를 포함하고 있는 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 상기 외향 돌출부는 홀드다운 브라켓에 고정되기 위한 만입부를 포함하고 있고, 상기 홀드다운 브라켓는 상기 만입부에 맞물리는 형상의 고정부를 포함하고 있는 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 상기 홀드다운 브라켓의 일측 부위와 타측 부위 사이에는 비드가 형성되어 있는 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 상기 홀드다운 브라켓의 타측 부위에는 베이스 플레이트와 결합하기 위한 하나 이상의 관통홈이 천공되어 있는 것을 특징으로 하는 전지팩.
- 제 16 항에 있어서, 상기 관통홈에 체결부재가 삽입되어 결합되는 것을 특징으로 하는 전지팩.
- 제 17 항에 있어서, 상기 체결부재는 볼트 또는 나사인 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 상기 전지모듈 어셈블리가 베이스 플레이트에 탑재된 상태에서, 전지셀 어셈블리를 감싸면서 베이스 플레이트에 결합되는 상단 커버(cover)를 추가로 포함하는 것을 특징으로 하는 전지팩.
- 제 1 항 내지 제 19 항 중 어느 하나에 따른 전지팩을 전원으로 포함하는 것을 특징으로 디바이스.
- 제 20 항에 있어서, 상기 디바이스는 전기자동차, 하이브리드 전기자동차, 또는 플러그-인 하이브리드 전기자동차인 것을 특징으로 하는 디바이스.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15789469.2A EP3116048B1 (en) | 2014-05-07 | 2015-04-30 | Battery pack having hold down bracket |
PL15789469T PL3116048T3 (pl) | 2014-05-07 | 2015-04-30 | Pakiet akumulatorowy mający wspornik dociskowy |
JP2016561829A JP6635938B2 (ja) | 2014-05-07 | 2015-04-30 | ホールドダウンブラケットを含む電池パック |
US15/302,909 US10553844B2 (en) | 2014-05-07 | 2015-04-30 | Battery pack having hold down bracket |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2014-0054012 | 2014-05-07 | ||
KR1020140054012A KR101769577B1 (ko) | 2014-05-07 | 2014-05-07 | 홀드다운 브라켓을 포함하는 전지팩 |
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WO2015170852A1 true WO2015170852A1 (ko) | 2015-11-12 |
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PCT/KR2015/004380 WO2015170852A1 (ko) | 2014-05-07 | 2015-04-30 | 홀드다운 브라켓을 포함하는 전지팩 |
Country Status (7)
Country | Link |
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US (1) | US10553844B2 (ko) |
EP (1) | EP3116048B1 (ko) |
JP (1) | JP6635938B2 (ko) |
KR (1) | KR101769577B1 (ko) |
CN (2) | CN204792962U (ko) |
PL (1) | PL3116048T3 (ko) |
WO (1) | WO2015170852A1 (ko) |
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EP3327821A4 (en) * | 2016-01-12 | 2018-06-13 | LG Chem, Ltd. | Battery module assembly having stable fixing means for unit modules |
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Also Published As
Publication number | Publication date |
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CN105098112A (zh) | 2015-11-25 |
CN105098112B (zh) | 2017-10-03 |
CN204792962U (zh) | 2015-11-18 |
US10553844B2 (en) | 2020-02-04 |
KR101769577B1 (ko) | 2017-08-18 |
KR20150127357A (ko) | 2015-11-17 |
PL3116048T3 (pl) | 2020-12-28 |
EP3116048A4 (en) | 2017-07-19 |
US20170047563A1 (en) | 2017-02-16 |
EP3116048A1 (en) | 2017-01-11 |
JP2017515266A (ja) | 2017-06-08 |
EP3116048B1 (en) | 2020-08-19 |
JP6635938B2 (ja) | 2020-01-29 |
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