WO2017122967A1 - 디바이스에 대한 탑재 공간이 최소화된 전지팩 - Google Patents
디바이스에 대한 탑재 공간이 최소화된 전지팩 Download PDFInfo
- Publication number
- WO2017122967A1 WO2017122967A1 PCT/KR2017/000174 KR2017000174W WO2017122967A1 WO 2017122967 A1 WO2017122967 A1 WO 2017122967A1 KR 2017000174 W KR2017000174 W KR 2017000174W WO 2017122967 A1 WO2017122967 A1 WO 2017122967A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery pack
- battery
- cover member
- base plate
- battery module
- 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
- B60L50/66—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
- 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
- H01M50/204—Racks, modules or packs for multiple batteries or multiple 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
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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
Definitions
- the present invention relates to a battery pack in which the mounting space for the device is minimized.
- the secondary battery is an electric vehicle (EV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle that has been proposed as a solution for air pollution of existing gasoline and diesel vehicles using fossil fuel. It is attracting attention as a power source such as (Plug-In HEV).
- Ni-MH secondary batteries are mainly used as secondary batteries for EV and HEV, but recently, researches using lithium secondary batteries with high energy density, high discharge voltage and output stability have been actively conducted. And is in some stages of commercialization.
- the secondary battery When the secondary battery is used as a power source of an automobile, the secondary battery is used in the form of a battery pack including a plurality of battery modules or battery module assemblies.
- the battery pack maintains structural stability against stimuli such as external shocks in various environments, and is used at various humidity and temperatures in order to be used as a power source of a device or system that is exposed to various environments such as automobiles. It should be possible to secure safety.
- some battery packs used as a power source of an automobile may easily secure a mounting space and reduce stimulation caused by various factors such as external shock and humidity, such as an interior space such as a part of a trunk or a seat of a vehicle. Is mounted on.
- 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.
- the inventors of the present application configure the outer circumferential surface of the cover member to be mounted in a state facing the battery pack mounting portion of the device, as described later.
- the pack may be configured to be mounted, thereby minimizing the space required for mounting the battery pack in the device, thereby overcoming the limitation on the mounting position of the battery pack and maximizing the space utilization of the device. It was confirmed that this can be done, and came to complete this invention.
- a cover member mounted on one surface of the base plate while surrounding the battery module assemblies
- a reinforcing support member positioned at a spaced portion between the battery module assemblies while supporting a mounting state of the cover member to the base plate;
- the battery pack may have a structure in which an outer circumferential surface of the cover member is mounted while facing the battery pack mounting portion of the device.
- the battery pack can be configured to be mounted under the device such as a vehicle, and thus, by minimizing the space required for mounting the battery pack in the device, Overcoming limitations on mounting location can maximize the space utilization of the device.
- the outer peripheral surface of the cover member may have a structure corresponding to the shape of the battery pack mounting portion of the device.
- the outer circumferential surface of the cover member and the battery pack mounting portion of the device may be in close contact with each other in a maximized state. Accordingly, the bonding force of the battery pack to the battery pack mounting portion of the device may be improved. The space required to mount the battery pack can be minimized.
- the cover member may have a structure in which portions corresponding to spaced spaces between the battery module assemblies are indented inwardly such that the battery module assemblies are apparently distinguished from each other.
- each of the battery module assemblies is stably fixed and held by the cover member, thereby suppressing the flow in the battery pack, thereby improving structural stability.
- a portion of the battery pack mounting portion may be coupled to the inner circumferential surface of the portion where the cover member is indented to face and coupled.
- the device on which the battery pack is mounted may be, in detail, an automobile.
- the battery pack mounting portion may be a lower frame of the vehicle including a plurality of linear beams.
- a part of the lower frame of the vehicle formed of the plurality of linear beams may be coupled to face the inner circumferential surface of the cover member portion indented in a shape corresponding to the spaced space between the battery module assemblies, and thus, the battery pack The flow is prevented by the cover member surrounding the battery module assemblies, thereby preventing damage from external impact, and can be safely protected.
- the battery pack mounting portion is composed of a frame constituting the device, it is not necessary to manufacture a separate battery pack mounting portion having a structure corresponding to the shape of the outer peripheral surface of the battery pack, it is possible to save the overall manufacturing cost and time, By reducing the types of components, the battery pack can be mounted in a more simplified structure.
- the battery pack may be a structure that is mounted to the battery pack mounting portion by a fastener that is inserted and coupled from the base plate.
- the battery pack according to the present invention may have a structure in which the outer circumferential surface of the cover member is mounted while facing the battery pack mounting portion of the device.
- the battery pack can be easily mounted to the battery pack mounting portion of the device by inserting and engaging a fastener for mounting the battery pack mounting portion of the device from the base plate opposite to the cover member.
- the fastener may be coupled to the battery pack mounting portion from the base plate via the reinforcing support member and the cover member.
- the battery pack can be mounted to the battery pack mounting portion of the device at the same time, the base plate and the reinforcing support member and the cover member are integrally coupled by one fastener inserted and coupled from the base plate, thereby
- the base plate and the reinforcing support member and the cover member are integrally coupled by one fastener inserted and coupled from the base plate, thereby
- the battery pack can be mounted to the battery pack mounting portion of the device at the same time, the base plate and the reinforcing support member and the cover member are integrally coupled by one fastener inserted and coupled from the base plate, thereby
- the battery pack can be mounted to the battery pack mounting portion of the device at the same time, the base plate and the reinforcing support member and the cover member are integrally coupled by one fastener inserted and coupled from the base plate, thereby
- the overall weight of the battery pack it is possible to improve the operating efficiency of the device.
- the reinforcing support member may have a structure in which a connect beam is connected between at least two support portions.
- the reinforcing support member is relatively light in weight and compact in size, and can stably support the mounting state of the cover member with respect to the base plate.
- the support parts and the connect beam may be formed in an integrated structure to further improve structural stability.
- the length of the connect beam connected between the support portion may be a structure consisting of 10% to 30% of the total length of the reinforcing support member.
- the weight and the strength of the reinforcing support member in comparison with the strength required for exerting the desired supporting force are less than 10% of the total length of the reinforcing support member, the weight and the strength of the reinforcing support member in comparison with the strength required for exerting the desired supporting force. And / or increase in size.
- the reinforcing support member may have a structure in which both surfaces of the support parts facing each other are coupled to face indented inner circumferential portions of the cover member and spaced apart portions of the battery cell assemblies on the base plate.
- the reinforcing support member is located at a spaced portion between the battery module assemblies while supporting the mounting state of the cover member with respect to the base plate, wherein the cover member is a battery so that the battery module assemblies are separated, A portion corresponding to the spaced space between the module assemblies may have a structure indented inward.
- the reinforcing support member is coupled to the opposite inner surface of the support member and the spaced apart portions of the battery cell assemblies on the base plate, respectively, so that both sides of the support portion are opposed to each other, thereby stably mounting the cover member to the base plate. Can support the state.
- the support part may have a structure in which a first fastening hole having a fastener coupled to both surfaces coupled to the cover member and the base plate is formed in a through structure.
- a portion of the cover member and the base plate corresponding to the first fastening hole of the support may have a structure in which a second fastening hole and a third fastening hole are formed, respectively.
- it may have a structure formed at a position corresponding to each other with the first fastening hole formed in the support portion of the reinforcing support member, the second fastening hole of the cover member, and the third fastening hole of the base plate.
- the fastener is coupled to the first fastening hole formed in the support portion of the reinforcing support member and the second fastening hole of the cover member from the third fastening hole of the base plate, so that the base plate and the reinforcing support member and the cover member are Can be coupled at the same time by the same fastener.
- the fastener may have a structure in which one end portion protrudes from the cover member and is coupled to the battery pack mounting part of the device in a state where the fastener is inserted into and coupled to the cover member opposite to the cover member from the base plate.
- the fastener may be coupled to the battery pack mounting portion from the base plate via the reinforcing support member and the cover member, and the battery pack may be mounted to the device with a more simplified structure.
- the height at which the fastener protrudes from the cover member may be between 10% and 90% of the height of the support.
- the fastener protrudes too short, so that the battery pack is stable in a state where the battery pack is mounted on the battery pack mounting part of the device. Can't keep up.
- the support portion may have a structure in which a watertight gasket is interposed on both surfaces coupled to the base plate and the cover member.
- the watertight gasket may have a structure in which a portion corresponding to the fastening hole of the support penetrates.
- the fastener coupling the base plate and the cover member and the support portion can be easily fastened without interference of the watertight gasket, and between the outer circumferential surface of the fastener and the inner circumferential surfaces of the fastening holes of the base plate and the cover member, from the outside. It can effectively prevent the inflow of moisture and dirt.
- the material of the watertight gasket is not particularly limited as long as the material is interposed between the support part, the base plate and the cover member to exert a predetermined sealing force and prevent moisture and dirt penetration.
- Synthetic rubber, natural rubber, silicone resin, and PVC Polyvinyl Chloride
- PVC Polyvinyl Chloride
- the synthetic rubber may be styrene-butadiene rubber, polychloroprene rubber, nitrile rubber, butyl rubber, butadiene rubber, isoprene rubber, ethylene prepropylene rubber, polysulfide rubber, silicone rubber, fluoro rubber, urethane rubber, And it may be one or more selected from the group consisting of acrylic rubber.
- one surface of the base plate may have a structure in which a mounting space for mounting the respective battery module assemblies is indented.
- two or more battery module assemblies are mounted on one surface of the base plate to be spaced apart from each other at a predetermined interval, and the mounting space for mounting the battery module assemblies is formed into an indented structure, thereby separating the spaces. It may be a structure that provides independent mounting space with the interposed portions interposed therebetween.
- the spaced portions between the battery module assemblies are formed in a relatively protruding structure, and thus, each of the battery module assemblies may be spaced apart from each other by adjacent spaced portions of the battery module assemblies. Flow in can be suppressed and more stable mounting state can be maintained.
- the depth in which the battery module assembly mounting space is indented is formed in a size of 10% to 50% based on the height corresponding to the mounting direction of the battery module assembly to prevent the flow of the battery module assembly. It can be a structure.
- each battery module assembly may not maintain a stable mounting state. Can be.
- the depth in which the battery module assembly mounting space is indented is formed to have a size exceeding 50% based on the height corresponding to the mounting direction of the battery module assembly, the battery of the device coupled face-to-face through the spaced apart portion.
- the length from the pack mounting portion to the other surface of the base plate opposite thereto may be excessively large, thereby causing a problem in that a space and a location on which the battery pack can be mounted may be restricted.
- each battery module assembly is formed in a rectangular parallelepiped structure in which the length of one outer periphery is relatively larger than the length of the other outer periphery, the battery module assemblies are in a state in which the outer periphery of the relatively large size facing each other It may be a structure mounted on the base plate.
- each battery module assembly is formed by arranging a plurality of battery cells, in this case, the battery module assembly is easy to form the electrical connection structure of the battery cells, ease of application to the limited mounting space of the vehicle, etc. In consideration of this, it may be formed into a rectangular parallelepiped structure.
- the battery module assemblies are mounted on the base plate in a state in which the outer peripheries having a relatively large size face each other, thereby making the battery pack more compact.
- the mounting structure of the battery module assemblies is not limited thereto, and the battery module assemblies may be mounted and arranged on the base plate in various structures according to the mounting position of the battery pack and the shape of the mounting space. .
- battery cells constituting one battery module assembly may be connected in series, and each battery module assembly constituting the module assembly assembly may be connected in parallel.
- the battery pack according to the present invention may be mounted on a device such as an automobile and serve to supply power. Accordingly, when the supply of power to the vehicle is suddenly cut off, a large accident It is likely to lead to.
- the battery cells constituting one battery module assembly are connected in series to each other, thereby exhibiting desired electrical characteristics, and each battery module assembly constituting the module assembly assembly is connected in parallel.
- the remaining battery module assembly can maintain the power supply state to the device, and thus, the power supply to the device is suddenly cut off, so that the operation of the device is stopped. This can prevent the occurrence of a safety accident, which can effectively prevent the occurrence of a safety accident.
- the type of the battery cell is not particularly limited, but as a specific example, it may be a lithium secondary battery such as a lithium ion battery, a lithium ion polymer battery and the like having advantages such as high energy density, discharge voltage, output stability and the like. .
- a 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
- Me: Mn, Fe, Pb, Ge; Me' Metal complex oxides such as Al, B, P, Si, Group 1, Group 2, Group 3 elements of the periodic table, halogen, 0 ⁇ x ⁇ 1; 1 ⁇ y ⁇ 3; 1 ⁇ z ⁇ 8); Lithium metal; Lithium alloys; Silicon-based alloys; Tin-based alloys; SnO, SnO 2 , PbO, PbO 2 , Pb 2 O 3 , Pb 3 O 4 , Sb 2 O 3 , Sb 2 O 4 , Sb 2 O 5 , GeO, GeO 2 , Bi 2 O 3 , Bi 2 O 4 , and metal oxides such as Bi 2
- the separator and the separator are 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 ⁇ 130 ⁇ 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 is used as the electrolyte, the solid electrolyte may also serve as a separator.
- the separator and / or the separator may be an SRS (Safety-Reinforcing Separators) separator of organic / inorganic composite porous.
- the SRS separator is manufactured using inorganic particles and a binder polymer as an active layer component on a polyolefin-based separator substrate, wherein the pore structure included in the separator substrate itself and the interstitial volume between the inorganic particles as the active layer component are used. It has a uniform pore structure formed.
- the organic / inorganic composite porous separator may exhibit excellent adhesion characteristics by controlling the content of the inorganic particles and the binder polymer, which are the active layer components in the separator, and thus may have an easy battery assembly process.
- the inorganic particles are not particularly limited as long as they are electrochemically stable. That is, the inorganic particles that can be used in the present invention are not particularly limited as long as the oxidation and / or reduction reactions do not occur in the operating voltage range of the battery to be applied (for example, 0 to 5 V on the basis of Li / Li +).
- the inorganic particles having the ion transfer ability since the ion conductivity in the electrochemical device can be improved to improve the performance, it is preferable that the ion conductivity is as high as possible.
- the inorganic particles have a high density, it is not only difficult to disperse during coating, but also has a problem of weight increase during battery manufacturing, and therefore, it is preferable that the density is as small as possible.
- an inorganic material having a high dielectric constant it is possible to contribute to an increase in the degree of dissociation of an electrolyte salt such as lithium salt in the liquid electrolyte, thereby improving the ionic conductivity of the electrolyte solution.
- the lithium salt-containing nonaqueous 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 electrolytes 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 , Nitrides, halides, sulfates and the like of Li, such as Li 4 SiO 4 -LiI-LiOH, Li 3 PO 4 -Li 2 S-SiS 2 , and the like, may 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 also provides a device including the battery pack, wherein the device may be any one selected from the group consisting of an electric vehicle, a hybrid electric vehicle, or a plug-in hybrid electric vehicle.
- the battery pack according to the present invention may be used as a power source of a device such as an automobile.
- the battery pack may be a structure that is mounted to be positioned under the frame of the vehicle, and more specifically, It may be a structure mounted on the lower portion of the frame of the position corresponding to the driver's seat and the auxiliary seat of the vehicle.
- the battery pack since the battery pack is not mounted in an interior space such as a trunk of a vehicle, the battery pack may be utilized more efficiently, and a limitation on a mounting position in a device such as a vehicle may be eliminated or minimized.
- FIG. 1 is an exploded view schematically showing the structure of a battery pack according to an embodiment of the present invention
- FIG. 2 is a plan view schematically showing the structure of a base plate on which the reinforcing support member of FIG. 1 is mounted;
- FIG. 3 is a schematic view schematically showing the structure of the reinforcing support member of FIG. 1;
- FIG. 4 is a vertical cross-sectional view schematically showing the structure of the reinforcing support member mounted to the battery pack of FIG. 1;
- FIG. 5 is a vertical cross-sectional view schematically showing the mounting structure of the battery pack of FIG. 1 with respect to the device.
- FIG. 1 is an exploded view schematically showing the structure of a battery pack according to an embodiment of the present invention.
- the battery pack 100 includes a base plate 110, a cover member 120, and two reinforcing support members 131 and 132.
- the base plate 110 includes mounting spaces 114 and 115 except for the spaced portions 111 and 112 between the battery module assemblies so that the three battery module assemblies may be mounted spaced apart from each other at predetermined intervals.
- , 116 consists of a plate-like structure indented in the lower surface direction.
- the spaced portions 111 and 112 between the battery module assemblies may have a predetermined height in the direction of the cover member 120 from the base plate 110 so that the two reinforcing support members 131 and 132 may be positioned. It is formed of a protruding partition structure.
- the mounting spaces 114, 115, and 116 of the battery module assemblies are distinguished from each other by the spaced portions 111 and 112, whereby the flow of the respective battery module assemblies mounted in the battery pack 100 is suppressed.
- structural stability can be improved.
- the through holes 113 are formed in the spaced portions 111 and 112 so that the fasteners can be inserted into and coupled to the portions corresponding to the supports of the reinforcing support members 131 and 132.
- the cover member 120 has a structure in which the outer circumferential surface corresponds to the shape of the battery pack mounting portion of the device, and the inner circumferential surface corresponds to the outer circumferential surface of the battery module assembly assembly, and in detail, each battery module assembly is distinguished.
- the parts 121 and 122 corresponding to the spaced parts 111 and 112 between the assemblies are formed inwardly.
- the cover member 120 is located at both sides of the battery pack mounting part of the device having various outer shapes, in addition to the portions 121 and 122 corresponding to the separation portions 111 and 112 between the battery module assemblies.
- the parts 123 and 124 are further included in portions corresponding to the upper surface of the battery module assembly.
- the battery pack 100 may be stably mounted and fixed to a battery pack mounting part having various shapes such as a lower surface of a vehicle frame.
- the cover member 120 includes an inclined portion 125 formed in a structure corresponding to the battery pack mounting portion of the device at a portion covering the top surface of the battery module assembly positioned at the center portion.
- the inclined portion 125 of the cover member 120 has a structure corresponding to the battery pack mounting portion of the device, and at the same time, the electrical connection device such as BMS and safety on the upper surface of the battery module assembly located at the center portion It can provide space for devices to be mounted.
- Holes 126 and 127 are formed in the inclined portion 125 of the cover member 120 corresponding to the electrical connection device and the safety devices mounted on the top surface of the battery module assembly.
- the two reinforcing support members 131 and 132 are positioned on the base plates 110 and spaced apart from each other between the battery module assemblies 111 and 112, respectively, and the base plate 110 and the cover member 120. By being coupled face to face, the mounting state of the cover member 120 with respect to the base plate 110 can be stably supported.
- FIG. 2 is a plan view schematically showing the structure of the base plate on which the reinforcing support member of FIG. 1 is mounted.
- three battery module assembly mounting spaces 114, 115, and 116 are formed on an upper surface of the base plate 110, and between each battery module assembly mounting spaces 114, 115, and 116.
- Reinforcing support members 131 and 132 are positioned and mounted on the separation parts 111 and 112.
- the mounting spaces 114, 115, and 116 of the battery module assembly may have a length 211 of one outer periphery at a length 212 of the other outer periphery adjacent thereto so as to mount the battery module assembly having a rectangular parallelepiped structure. Compared to the larger structure.
- a plurality of reinforcement beads 118 protruded convexly in the battery module assembly mounting direction are formed to reinforce rigidity.
- the width 222 of the spaced portions 111 and 112 is about 200% of the width 221 of the reinforcing support members 131 and 132.
- the spaces 111 and 112 between the battery module assembly mounting spaces 114, 115, and 116 electrically connect the battery modules or the battery module assemblies. Electrical connection members can be easily received.
- the outer periphery of the base plate 110 is formed with a plurality of fastening holes 119 for mounting to the device, the two corner portions corresponding to the shape of the battery pack mounting portion of the device, the inclined portions 117a, 117b, respectively Formed.
- FIG. 3 is a schematic diagram schematically showing the structure of the reinforcing support member of FIG.
- the reinforcing support member 131 has a structure in which connect beams 131b are continuously connected between the support portions 131a, and the support portions 131a and the connect beam 131b have an integrated structure. have.
- the support portion 131a has a cylindrical structure in which opposite surfaces of the cover member 131 are joined to the indented inner circumferential portion of the cover member and spaced apart portions between the battery cell assemblies on the base plate, respectively.
- Fastening holes 131d to which fasteners are coupled are formed on both surfaces of the support part 131a coupled to the cover member and the base plate in a through structure.
- Watertight gaskets 131c interposed between the cover member and the base plate are positioned on both surfaces of the support part 131a.
- the watertight gasket 131c has the same circular shape as the horizontal cross-sectional shape of the support 131a, and has a structure in which a portion corresponding to the fastening hole 131d of the support 131a penetrates.
- the length L1 of the connect beam 131b connected between the supporting parts 131a is about 10% of the total length L2 of the reinforcing support member 131.
- FIG. 4 is a vertical cross-sectional view schematically showing the structure of the reinforcing support member mounted to the battery pack of FIG.
- a gasket mounting groove 431 in which a watertight gasket 131c is mounted is provided at both surfaces of the support 131a of the reinforcing support member 131 facing the cover member 120 and the base plate 110. It is formed continuously around the fastening hole of 131a).
- the cover member 120 and the base plate 110 are provided. ), The desired sealing force can be exhibited.
- the first fastening hole 131d of the support portion 131a of the reinforcing support member 131 has a through structure, and a groove 435 having a screw structure is formed on an inner surface thereof.
- the second fastening hole 432 and the third fastening hole ( 433) are formed respectively.
- one fastener 434 is inserted and coupled into the screw structure through the fastening holes 432, 433, 131 d from the base plate 110 in the direction of the cover member 120 opposite thereto, and thus, the base The plate 110, the reinforcing support member 131, and the cover member 120 may be stably coupled and maintained.
- One end 434a of the fastener 434 protrudes from the cover member 120 at a height H2 of about 20% with respect to the height H1 of the support 131a.
- the base plate 110 and the cover member 120 and the reinforcing support member 131 of the battery pack may be coupled to the battery pack mounting portion of the device while being coupled to the same fastener 434 by the same.
- the battery pack can be configured with a simpler and lighter structure.
- FIG. 5 is a vertical cross-sectional view schematically showing the mounting structure of the battery pack of FIG. 1 with respect to the device.
- the mounting spaces 114, 115, and 116 of the base plate 110 for mounting the battery module assemblies 141, 142, and 143 correspond to the battery module assemblies 141, 142, Based on the height H3 of 143, the structure is indented to a depth H4 of about 50% in the direction.
- the spaced apart portions 111 and 112 between the mounting spaces 114, 115, and 116 are relatively protruded in the upward direction, and the cover member 120 is disposed between the reinforcing support members 131 and 132. It is coupled to face the indented inner peripheral surface of.
- the lower frame 510 of the vehicle is positioned as a battery pack mounting portion of the device on the upper surface of the indented portion of the cover member 120.
- the fastener 434 is inserted into and coupled to the cover member 120 from the base plate 110, and one end thereof protrudes from the cover member 120 and is coupled to the lower frame 510 of the vehicle.
- the battery pack 100 may be mounted in close contact with the shape of the lower frame 510 of the vehicle, and in a variety of operating environments of the vehicle, the battery pack 100 may more stably maintain the coupled state of the battery pack 100. .
- the battery pack according to the present invention may be configured such that the battery pack is mounted on a lower part of a device such as an automobile by configuring the outer circumferential surface of the cover member to face the battery pack mounting portion of the device. Accordingly, in the device, by minimizing the space required for mounting the battery pack, it is possible to overcome the limitation on the mounting position of the battery pack and to maximize the space utilization of the device.
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Abstract
Description
Claims (23)
- 전원의 공급을 위해 디바이스의 전지팩 탑재부에 장착되는 전지팩으로서,각각 복수의 전지셀들이 배열되어 있는 둘 이상의 전지모듈 어셈블리들이 소정의 간격을 두고 서로 이격된 상태로 일면에 탑재되는 베이스 플레이트(base plate);상기 전지모듈 어셈블리들을 감싸면서 베이스 플레이트의 일면 상에 장착되는 커버(cover) 부재; 및상기 베이스 플레이트에 대한 커버 부재의 장착 상태를 지지하면서, 전지모듈 어셈블리들 사이의 이격 부위에 위치하는 보강 지지부재;를 포함하고 있고,상기 전지팩은 상기 커버 부재의 외주면이 디바이스의 전지팩 탑재부에 대면한 상태에서 장착되는 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 상기 커버 부재의 외주면은 디바이스의 전지팩 탑재부의 형상에 대응되는 구조로 이루어진 것을 특징으로 하는 전지팩.
- 제 2 항에 있어서, 상기 커버 부재는, 전지모듈 어셈블리들이 외관상으로 상호 구분되도록, 전지모듈 어셈블리들 사이의 이격 공간에 대응하는 부위가 내측으로 만입된 구조로 이루어진 것을 특징으로 하는 전지팩.
- 제 3 항에 있어서, 상기 커버 부재가 내측으로 만입된 부위의 내주면에 전지팩 탑재부의 일부가 대면하여 결합되는 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 상기 전지팩은 베이스 플레이트로부터 삽입 및 결합되는 체결구에 의해 전지팩 탑재부에 장착되는 것을 특징으로 하는 전지팩.
- 제 5 항에 있어서, 상기 체결구는 베이스 플레이트로부터 보강 지지부재 및 커버 부재를 경유하여 전지팩 탑재부에 결합되는 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 상기 보강 지지부재는 적어도 둘 이상의 지지부들 사이에 커넥트 빔(connect beam)이 연결된 구조로 이루어진 것을 특징으로 하는 전지팩.
- 제 7 항에 있어서, 상기 보강 지지부재는, 서로 대향하는 지지부의 양면이, 각각 커버 부재의 만입된 내주면 부위, 및 베이스 플레이트 상의 전지셀 어셈블리들의 이격 부위에 대면하여 결합되는 것을 특징으로 하는 전지팩.
- 제 8 항에 있어서, 상기 지지부는 커버 부재 및 베이스 플레이트에 대면하여 결합되는 양면에 체결구가 결합되는 제 1 체결공이 관통 구조로 형성되어 있는 것을 특징으로 하는 전지팩.
- 제 9 항에 있어서, 상기 지지부의 제 1 체결공에 대응하는 커버 부재의 부위 및 베이스 플레이트의 부위에는 각각 제 2 체결공 및 제 3 체결공이 형성되어 있는 것을 특징으로 하는 전지팩.
- 제 10 항에 있어서, 체결구는, 베이스 플레이트로부터 이에 대향하는 커버 부재 쪽으로 상기 체결공들을 통해 삽입 및 결합된 상태에서, 일측 단부가 커버 부재로부터 돌출되어, 디바이스의 전지팩 탑재부에 결합되는 것을 특징으로 하는 전지팩.
- 제 11 항에 있어서, 상기 체결구가 커버 부재로부터 돌출된 높이는 지지부의 높이에 대해 10% 내지 90%의 크기인 것을 특징으로 하는 전지팩.
- 제 7 항에 있어서, 상기 지지부는 베이스 플레이트 및 커버 부재에 대면하여 결합되는 양면 부위에 수밀용 가스켓이 개재되어 있는 것을 특징으로 하는 전지팩.
- 제 13 항에 있어서, 상기 수밀용 가스켓은 지지부의 체결공에 대응되는 부위가 관통되어 있는 구조로 이루어진 것을 특징으로 하는 전지팩.
- 제 13 항에 있어서, 상기 수밀용 가스켓의 소재는 합성 고무, 천연 고무, 실리콘 수지, 및 PVC(Polyvinyl Chloride)로 이루어진 군으로부터 선택되는 어느 하나 이상인 것을 특징으로 하는 전지팩.
- 제 15 항에 있어서, 상기 합성고무는 스티렌-부타디엔 고무, 폴리클로로프렌 고무, 니트릴 고무, 부틸 고무, 부타디엔 고무, 이소프렌 고무, 에틸렌프리필렌 고무, 다황화물계 고무, 실리콘 고무, 플루오로계 고무, 우레탄 고무, 및 아크릴 고무로 이루어진 군으로부터 선택되는 하나 이상인 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 상기 베이스 플레이트의 일면에는 각각의 전지모듈 어셈블리들이 탑재되기 위한 탑재 공간이 만입된 구조로 형성되어 있는 것을 특징으로 하는 전지팩.
- 제 17 항에 있어서, 상기 전지모듈 어셈블리 탑재 공간이 만입된 깊이는 상기 전지모듈 어셈블리의 유동을 방지할 수 있도록, 전지모듈 어셈블리의 탑재 방향에 대응하는 높이를 기준으로 10% 내지 50%의 크기로 형성되어 있는 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 각각의 전지모듈 어셈블리는 일측 외주변의 길이가 나머지 외주변의 길이에 비해 상대적으로 큰 직육면체 구조로 형성되어 있으며, 상기 전지모듈 어셈블리들은 상대적으로 큰 크기로 이루어진 외주변이 서로 대면하는 상태로 베이스 플레이트 상에 탑재되어 있는 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 하나의 전지모듈 어셈블리를 구성하는 전지셀들은 각각 직렬로 연결되어 있고, 모듈 어셈블리 집합체를 구성하는 각각의 전지모듈 어셈블리들은 병렬로 연결되어 있는 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 상기 전지셀은 리튬 이차전지인 것을 특징으로 하는 전지팩.
- 제 1 항에 따른 전지팩을 포함하는 것을 특징으로 하는 디바이스.
- 제 22 항에 있어서, 상기 디바이스는 전기자동차, 하이브리드 전기자동차, 또는 플러그인 하이브리드 전기자동차로 이루어진 군에서 선택되는 어느 하나인 것을 특징으로 하는 디바이스.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP17738596.0A EP3336927A4 (en) | 2016-01-12 | 2017-01-06 | Battery pack having minimized loading space for device |
US15/752,899 US10707463B2 (en) | 2016-01-12 | 2017-01-06 | Battery pack minimized with mounting space for device |
CN201780003013.6A CN107949931B (zh) | 2016-01-12 | 2017-01-06 | 对于装置最小化安装空间的电池组 |
JP2018531284A JP6633760B2 (ja) | 2016-01-12 | 2017-01-06 | デバイスに対する搭載空間が最小化された電池パック |
Applications Claiming Priority (2)
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KR10-2016-0003598 | 2016-01-12 | ||
KR1020160003598A KR102072220B1 (ko) | 2016-01-12 | 2016-01-12 | 디바이스에 대한 탑재 공간이 최소화된 전지팩 |
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WO2017122967A1 true WO2017122967A1 (ko) | 2017-07-20 |
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US (1) | US10707463B2 (ko) |
EP (1) | EP3336927A4 (ko) |
JP (1) | JP6633760B2 (ko) |
KR (1) | KR102072220B1 (ko) |
CN (1) | CN107949931B (ko) |
WO (1) | WO2017122967A1 (ko) |
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2016
- 2016-01-12 KR KR1020160003598A patent/KR102072220B1/ko active IP Right Grant
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2017
- 2017-01-06 WO PCT/KR2017/000174 patent/WO2017122967A1/ko active Application Filing
- 2017-01-06 CN CN201780003013.6A patent/CN107949931B/zh active Active
- 2017-01-06 US US15/752,899 patent/US10707463B2/en active Active
- 2017-01-06 EP EP17738596.0A patent/EP3336927A4/en active Pending
- 2017-01-06 JP JP2018531284A patent/JP6633760B2/ja active Active
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KR20100003138A (ko) * | 2008-06-30 | 2010-01-07 | 주식회사 엘지화학 | 전지 탑재 시스템 |
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Publication number | Publication date |
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JP6633760B2 (ja) | 2020-01-22 |
US10707463B2 (en) | 2020-07-07 |
JP2018532244A (ja) | 2018-11-01 |
KR20170084501A (ko) | 2017-07-20 |
CN107949931A (zh) | 2018-04-20 |
KR102072220B1 (ko) | 2020-01-31 |
US20180241021A1 (en) | 2018-08-23 |
CN107949931B (zh) | 2020-11-06 |
EP3336927A1 (en) | 2018-06-20 |
EP3336927A4 (en) | 2018-12-05 |
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