WO2015016566A1 - 전지모듈 어셈블리 - Google Patents
전지모듈 어셈블리 Download PDFInfo
- Publication number
- WO2015016566A1 WO2015016566A1 PCT/KR2014/006918 KR2014006918W WO2015016566A1 WO 2015016566 A1 WO2015016566 A1 WO 2015016566A1 KR 2014006918 W KR2014006918 W KR 2014006918W WO 2015016566 A1 WO2015016566 A1 WO 2015016566A1
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- WIPO (PCT)
- Prior art keywords
- battery module
- modules
- sub
- module assembly
- battery
- Prior art date
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- 239000002826 coolant Substances 0.000 claims description 23
- 239000003507 refrigerant Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 239000011230 binding agent Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000011255 nonaqueous electrolyte Substances 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 229910003002 lithium salt Inorganic materials 0.000 description 4
- 159000000002 lithium salts Chemical class 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000007784 solid electrolyte Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000002388 carbon-based active material Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910003480 inorganic solid Inorganic materials 0.000 description 1
- 230000010220 ion permeability Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910021437 lithium-transition metal oxide Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 229920001690 polydopamine Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—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
-
- 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
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/10—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
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- 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
- H01M50/258—Modular batteries; Casings provided with means for assembling
-
- 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
-
- 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 module assembly, and more particularly, a battery module assembly including unit modules mounted on a cartridge in a state in which unit cells are electrically connected by a bus bar, wherein the battery module assembly includes two stacked vertically from the ground.
- Two or more sub-modules including one or more unit modules and arranged in a lateral direction;
- Side cover plates mounted to the sides of the submodules;
- An upper cover plate mounted on an upper surface of the sub modules, the upper cover plate being coupled to the sub modules and the side cover plate;
- a front cover plate mounted on a front surface of the battery module assembly in which the external input / output terminals of the sub modules are positioned and fastened to the sub modules, the base plate, and the side cover plate;
- a main bus bar fixing the front ends of the submodules and connecting external input / output terminals of the submodules;
- Secondary batteries are also attracting attention as energy sources such as electric vehicles and hybrid electric vehicles, which are proposed as a way to solve air pollution of conventional gasoline and diesel vehicles using fossil fuel. It is also being used as a key member of power storage devices. Therefore, the type of applications using the secondary battery has been very diversified due to the advantages of the secondary battery, and it is expected that the secondary battery will be applied to many fields and products in the future.
- small mobile devices such as mobile phones, PDAs, digital cameras, notebook computers, and the like are used with one or two or four small and light battery cells per device according to the miniaturization tendency of the products.
- medium and large devices such as electric vehicles, hybrid electric vehicles, power storage devices, etc.
- medium and large battery modules or battery packs electrically connecting a plurality of battery cells are used. Since the size and weight of the battery module are directly related to the accommodation space and the output of the medium and large devices, manufacturers are trying to manufacture a battery module that is as small and lightweight as possible.
- the conventional medium-large battery module is manufactured by stacking a plurality of unit pieces and applying a plate for fixing up and down to complete fixing between units and then fixing them separately inside the frame. It causes the increase of the total volume.
- the individual plates for fixing the individual units the overall rigidity of the battery module is lowered, which requires an additional reinforcing member.
- a separate cooling flow path or a cooling member is additionally mounted for cooling the battery module, it is disadvantageous that parts increase and efficient work in a narrow space becomes difficult.
- the present invention aims to solve the problems of the prior art and the technical problems that have been requested from the past.
- the inventors of the present application through in-depth research and various experiments, configure the battery module assembly in a structure in which the sub-modules are fixed by the side cover plate of the specific structure, the main bus bar and the bracket, and the like, thereby increasing the volume of the battery module assembly.
- the battery module assembly can be assembled in a compact (compact) structure, so that the configuration of the additional components for improving the stability and cooling efficiency of the battery module is not necessary, the production together with the compact structure It is to provide a battery module assembly having an improved stability to achieve the effect of increasing the efficiency of the process.
- a battery module assembly including unit modules mounted on a cartridge in which unit cells are electrically connected by a bus bar,
- Two or more sub-modules including two or more unit modules stacked in a vertical direction from the ground and arranged in a lateral direction;
- An upper cover plate mounted on an upper surface of the sub modules, the upper cover plate being coupled to the sub modules and the side cover plate;
- a front cover plate mounted on a front surface of the battery module assembly in which the external input / output terminals of the sub modules are positioned and fastened to the sub modules, the base plate, and the side cover plate;
- a main bus bar fixing the front ends of the submodules and connecting external input / output terminals of the submodules
- Consists of a structure that includes.
- the battery module assembly by configuring the battery module assembly in a structure for fixing the sub-modules with the side cover plate, the main bus bar and the bracket of a specific structure, while suppressing the increase in volume of the battery module assembly It is possible to increase the rigidity of the self, and to achieve a uniform cooling effect of the battery module assembly.
- the battery module assembly according to the present invention in the assembly process of the battery module assembly, it is not necessary to configure additional components for improving the stability and cooling efficiency of the battery module, thereby increasing the efficiency of the production process together with the compact structure Effect can be achieved.
- the unit cell may be a plate-shaped battery cell or a structure in which two or more plate-shaped battery cells are mounted on a cell cover with the electrode terminals exposed.
- an electrode Except for the terminal portion it may be a pair of outer member coupled to surround the outer surface of the battery cells.
- the battery cell may be a rectangular secondary battery or a pouch secondary battery.
- the rectangular secondary battery may have a structure in which an electrode assembly is sealed in a rectangular metal case
- the pouch type secondary battery may specifically have a structure in which an electrode assembly is sealed in a laminate sheet including a resin layer and a metal layer.
- the secondary battery may be a lithium secondary battery of high energy density, discharge voltage, and output stability. Other components of the lithium secondary battery will be described in detail below.
- a lithium secondary battery is composed of a positive electrode, a negative electrode, a separator, a lithium salt-containing nonaqueous electrolyte, and the like.
- the positive electrode is produced by, for example, applying a mixture of a positive electrode active material, a conductive material, and a binder onto a positive electrode current collector, followed by drying, and further, a filler may be further added as necessary.
- the negative electrode is also manufactured by coating and drying a mixture of a negative electrode active material and a binder on a negative electrode current collector, and if necessary, the components as described above may be further included.
- the separator is interposed between the cathode and the anode, and an insulating thin film having high ion permeability and mechanical strength is used.
- the lithium salt-containing non-aqueous electrolyte solution consists of a nonaqueous electrolyte solution and a lithium salt, and a liquid nonaqueous electrolyte solution, a solid electrolyte, an inorganic solid electrolyte, and the like are used as the nonaqueous electrolyte solution.
- the current collector the electrode active material, the conductive material, the binder, the filler, the separator, the electrolyte, the lithium salt, and the like are known in the art, a detailed description thereof will be omitted herein.
- Such lithium secondary batteries may be prepared by conventional methods known in the art. That is, it may be prepared by injecting an electrolyte through a porous separator between the anode and the cathode.
- the positive electrode may be manufactured by, for example, applying a slurry containing the lithium transition metal oxide active material, the conductive material, and the binder described above onto a current collector and then drying.
- the negative electrode can be prepared by, for example, applying a slurry containing the above-described carbon active material, a conductive material and a binder onto a thin current collector and then drying it.
- the cell cover may be constituted by a pair of exterior members coupled to surround the outer surface of the battery cells except for the electrode terminal portion.
- this cell cover for example, two battery cells may be mounted, and the two battery cells may form a battery cell assembly in a stacked structure such that electrode terminals of the same polarity contact each other and are connected in parallel.
- the unit cells in the unit module may be a structure that is connected in parallel with each other.
- the unit cells may be mounted on the cartridge so that the electrode terminals face each other, and the electrode terminals may be connected in parallel by battery bar connection bus bars mounted to the cartridge.
- Such a cartridge is an electrically insulating member having predetermined rigidity, which protects the unit cells from external shocks and ensures stable mounting of the unit cells.
- the unit cells are arranged by the cartridge so that the electrode terminals face each other, thereby facilitating electrical parallel connection by the bus bars.
- a fixing member may be additionally mounted between the electrode terminal connecting portions of the unit cells to fix the electrode terminal connecting portions to the cartridge.
- the fixing portion has an outer surface shape corresponding to the shape between the electrode terminal connecting portion is formed in the through groove in the center and is electrically insulating protrusions mounted on the cartridge, and inserted into the through grooves It may be a structure including a fastening portion for coupling to the cartridge.
- the unit cells can be stably mounted to the cartridge.
- both sides of the cartridge may be formed with protrusions having fastening grooves, and the cartridges are coupled to each other by a fastening member penetrating the fastening groove to form a submodule. Accordingly, the unit cells are fixed by the cartridge and at the same time the cartridges can be coupled to each other by the fastening groove, thereby achieving a more robust and stable fixing effect.
- the fastening of the cartridges achieved through the fastening grooves may be, for example, fastening by bolts or rivets passing through the fastening grooves, but is not limited thereto.
- the bus bar for connecting the unit modules is bent up or down one end of the surface to which the electrode terminal is coupled, the bent one end and the connection member is coupled, and electrically connected to the adjacent unit module It may be a structure forming a.
- unit modules in the sub-module may have a structure that is connected in series or in parallel, for example, to achieve the parallel connection structure by the same mounting position of the connection member and different stacking structure of the unit modules. have.
- the side cover plate may be formed with one or more refrigerant inlets through which the refrigerant can be introduced.
- the unit modules may be stacked in such a manner that a coolant flow path is formed at a stacking interface, and the sub modules are arranged to be spaced apart from each other to provide a coolant flow path.
- the side cover plate is a member mounted to the side of the sub-module to be fixed to the base plate and the upper cover plate of the sub-modules, the main body portion surrounding the side of the sub-module; A fixed part bent and formed in an extended structure at both ends of the main body to surround the sub-modules, and fixed to the sub-modules; And a handle formed at one end of the main body, and may have a structure in which coolant inlets are formed in the main body.
- the main bus bar for example, as a member that can be connected to the external input and output terminals formed in the sub-modules and at the same time can be fixed to each other so that a predetermined separation space between the sub-modules, the plate-shaped body portion , A fixing part, and an opening formed through the center of the main body part, and the fixing part may have a structure in which a fastener capable of being fastened and fixed to external input / output terminals of the submodules is formed.
- the bracket may have a refrigerant outlet communicating with the refrigerant passage, and a fan or a discharge duct may be mounted at a position of the refrigerant outlet.
- the bracket is a member that can be fixed to each other so as to maintain a predetermined space between the sub-modules, such as the main bus, plate-shaped body portion, fixed portion, and in the center of the body portion And a coolant outlet formed through the main body, and the main body is formed at both ends of the concave-convex structure corresponding to the rear concave-convex structure of the sub-modules, and the fastening part can be fastened and fixed to the rear of the sub-modules. It consists of a structure that is formed.
- a coolant flow path is formed at a stacking interface of the unit modules, a coolant inlet port for supplying coolant to the coolant flow path is formed at the side cover plate, and the coolant unit modules are cooled. Since the outlet of the is formed in the bracket located on the rear of the sub-module, it is possible to uniformly cool the unit modules constituting the battery module assembly. Therefore, the overall cooling effect of the battery module assembly can be achieved with improved efficiency.
- the upper cover plate and the base plate may be made of, for example, a plate having a predetermined rigidity and elasticity, and may achieve an effect of integrating the submodules into one and at the same time protecting from an external shock.
- the upper cover plate and the base plate are not particularly limited as long as they are manufactured by machining, but as a specific example, they may be manufactured by a press molding method.
- a reinforcing bead of a concave-convex structure may be formed on an outer surface of the upper cover plate and the base plate so as to improve self rigidity.
- the upper cover plate and the base plate may further include a fastening groove for fastening to the sub-modules.
- the sub-modules can be fixed at the same time as being fastened with the upper cover plate and the base plate, it is possible to achieve a more robust and stable fixing effect.
- the fastening of the submodules and the upper cover plate and the base plate achieved through the fasteners may be fastening by bolts or rivets, but is not limited thereto.
- the present invention also provides a device including the battery module assembly as a power source, the device specifically, an electric vehicle, hybrid electric vehicle, plug-in hybrid electric vehicle, power storage device, emergency power supply, computer room power supply It may be a device, a portable power supply, a medical power supply, a fire extinguishing power supply, an alarm power supply, or an evacuation power supply.
- FIG. 1 is a perspective view of a pouch-type battery cell according to the present invention.
- FIG. 2 is a perspective view of a unit cell having a structure in which the battery cells of FIG. 1 are mounted on a cell cover;
- FIG. 3 is a perspective view illustrating a unit cell of FIG. 2 mounted on a cartridge to configure one unit module
- FIG. 4 is a plan view of a unit module according to the present invention.
- FIG. 5 is a side view of a unit module according to the present invention.
- FIG. 6 is a perspective view showing a shape in which unit modules according to the present invention are stacked;
- FIG. 7 is a partially enlarged view of FIG. 6;
- FIG. 8 is a perspective view showing a shape in which a serial connection member and a bus bar for external input / output terminals are mounted on a submodule according to the present invention
- FIG. 9 is a perspective view illustrating a shape in which an external input / output terminal protection member and a series connection protection member are attached to the submodule of FIG. 8;
- FIG. 10 is a side view of FIG. 9;
- FIG. 11 is a perspective view illustrating a side cover plate mounted on the submodule of FIG. 9;
- FIG. 12 is a perspective view showing the shape of fixing the two sub-modules in the side cover plate and the bracket according to the present invention
- FIG. 13 is a top view of FIG. 12;
- FIG. 14 is a perspective view illustrating a shape in which two sub-modules according to the present invention are electrically connected to each other at the same time as the main bus bars, and fixed to each other and a base plate, an upper cover plate and a front cover plate are mounted;
- FIG. 15 is a perspective view of a battery module assembly according to the present invention.
- FIG. 1 is a perspective view of a pouch-type battery cell according to the present invention.
- the battery cell 20 is a plate-shaped battery cell 20 in which electrode terminals (anode terminal 21 and cathode terminal 22) are formed at one end thereof.
- the plate-shaped battery cell 20 includes an electrode assembly (not shown) in the pouch-shaped case 23 of the laminate sheet including a metal layer (not shown) and a resin layer (not shown).
- the sealing portion 24 is formed by thermal fusion, and is commonly referred to as a pouch type battery cell.
- FIG. 2 is a perspective view of a unit cell having a structure in which the battery cells of FIG. 1 are mounted on a cell cover.
- two battery cells 20 are accommodated in and fixed to cell covers 111 and 112 including an upper cell cover 111 and a lower cell cover 112.
- the electrode terminals 21 and 22 of the two battery cells 20 are exposed in one direction from the cell cover so as to be electrically connected in parallel to each other to form the two electrode terminals 110a and 110b. It is.
- FIG. 3 is a perspective view showing a shape in which the unit cell of FIG. 2 is mounted to a cartridge to form one unit module
- FIGS. 4 and 5 are plan and side views of the unit module according to the present invention.
- two unit cells 110 are mounted to the cartridge 120 to form one unit module 100.
- the two unit cells 110 are arranged such that each of the positive electrode terminal 110a and the negative electrode terminal 110b faces each other.
- these electrode terminals 110a and 110b are electrically connected in parallel by bus bars 130, respectively.
- the bus bar 130 is electrically coupled with the electrode terminals 110a and 110b, and a bent portion 131 is bent downward at one end of the bus bar 130 and fastened to the bent portion.
- a sphere 132 is formed.
- the fastener 132 is used as a fastener 132 for electrical connection between the unit modules 100 when a plurality of unit modules 100 are stacked (see FIGS. 6 and 7).
- protrusions 121 having fastening grooves 122 are formed at both sides of the cartridge 120.
- the protrusions 121 may be unit modules 100 may be coupled to each other by a fastening member (123 of FIG. 5) passing through the fastening groove 122.
- the height of the protrusion 121 is 110 to 150% greater than the height of the cartridge 120. Therefore, when the unit modules 100 are stacked, a predetermined gap (170 in FIG. 9) is formed at the stacking interface of the unit module 100, and the gap (170 in FIG. 9) is a refrigerant flow path through which the refrigerant may flow. It can be used as.
- FIG. 6 is a perspective view showing a shape in which unit modules according to the present invention are stacked.
- the unit modules 100 are vertically stacked from the ground to form one sub module 200. Specifically, after the unit modules 100 are vertically stacked, the fastening members 123 are inserted into the protrusions formed at both sides thereof, and are coupled to each other.
- FIG. 7 is a partially enlarged view of FIG. 6, and FIG. 8 shows a shape in which connection members 140 and bus bars 151 and 152 for external input / output terminals are mounted on the submodule 200 according to the present invention. The perspective view shown is shown.
- the unit modules 100 are electrically connected in series by the connection members 140.
- bus bars 151 and 152 for external input / output terminals are mounted to electrically connect the unit modules 100 connected in series to the external input / output terminals 161 and 162.
- FIG. 9 is a perspective view illustrating a shape in which an external input / output terminal protection member and a serial connection protection member are mounted on the submodule of FIG. 8.
- the external input / output terminal 161 of the sub module 200 is protected from the outside by mounting the external input / output terminal protection member 165.
- the serial connection unit in which the unit modules 100 are electrically connected in series is also protected from the outside by mounting the serial connection protection member 145.
- FIG. 10 is a side view of FIG. 9.
- predetermined gaps 170 are formed in the stacking interface of the unit modules 100 constituting the submodule 200. These gaps 170 may be utilized as a coolant flow path through which a coolant may flow.
- FIG. 11 is a perspective view illustrating a shape in which the side cover plate is mounted on the submodule of FIG. 9.
- the side cover plate 300 includes a main body 310 surrounding the side of the sub module 200, and the main body 310 includes inlets through which refrigerant may be introduced from the outside (see FIG. 11). 311) is perforated.
- both ends of the main body 310 are formed with a bent portion 320 having a structure that is bent and extended to surround the submodule 200.
- the body portion 310 and the bent portion 320 of the side cover plate 300 is formed with fixing parts (312, 321) fastened and fixed to the sub-module 200, one side of the body portion 310 A handle 330 is formed at the end.
- FIG. 12 is a perspective view illustrating a shape in which two submodules are fixed by a side cover plate and a bracket.
- two sub-modules 200 are coupled to each other by mounting a bracket 500 on a rear surface thereof.
- the bracket 500 includes a plate-shaped body portion 510, the fixing portion 520, and the refrigerant outlet 530 is formed through the center of the body portion 510. .
- the main body 510 is formed at both ends of the concave-convex portion 511 having a shape corresponding to the rear concave-convex structure of the sub-modules 200, and the fixing portion 520 to the rear of the sub-module 200 Fasteners that can be fastened and fixed are formed.
- FIG. 13 shows the top view of FIG. 12.
- the sub-modules 200 may have a coolant (not shown) flowing in the center by a bracket 500 mounted at a rear side and a main bus bar 400 mounted at the front side.
- a coolant flow path (see arrow) is formed. Therefore, the coolant flows from the side cover plate 300 to cool the battery cells (not shown) built in the sub-modules 200 and then to the coolant outlet 530 formed in the bracket 500 along the central coolant flow path. Can be discharged.
- a cooling fan (not shown) or a discharge duct (not shown) may be installed at the refrigerant outlet 530 to further improve cooling efficiency.
- FIG. 14 is a perspective view illustrating a shape in which two sub-modules are electrically connected to and fixed at the same time as the main bus bars, and a base plate, an upper cover plate, and a front cover plate are mounted.
- the external input / output terminals 162 and 161 of the two sub modules 200 are electrically connected in series by the main bus bar 400.
- the two sub modules 200 are fixed to be spaced apart by a predetermined distance by the main bus bar 400.
- the upper surface is protected by the upper cover plate 700, and the front surface is protected by the front cover plate 800.
- FIG. 15 is a perspective view of a battery module assembly according to the present invention.
- reinforcing beads (750, 650) having concave-convex structures for improving self rigidity are formed on the outer cover plate 700 and the base plate 600.
- FIG. 15 together with FIG. 14, reinforcing beads (750, 650) having concave-convex structures for improving self rigidity are formed on the outer cover plate 700 and the base plate 600.
- the battery module assembly comprises a battery module assembly in a structure for fixing the sub-modules with a side cover plate, a main bus bar, a bracket, etc. of a specific structure, thereby increasing the volume of the battery module assembly.
- a uniform cooling effect of the battery module assembly can be achieved.
- the battery module assembly can be assembled in a compact structure, and additional components for improving the stability and cooling efficiency of the battery module are not required, thereby achieving the effect of increasing the efficiency of the production process together with the compact structure. Can be.
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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims (23)
- 단위셀들이 버스 바에 의해 전기적으로 연결된 상태에서 카트리지에 탑재되어 있는 단위모듈들을 포함하고 있는 전지모듈 어셈블리로서,지면으로부터 수직 방향으로 적층된 둘 이상의 단위모듈들을 포함하고 있고, 측면 방향으로 배열되어 있는 둘 이상의 서브모듈들(sub-modules);상기 서브모듈들이 탑재되는 베이스 플레이트(base plate);상기 서브모듈들의 측부에 장착되는 측부 커버 플레이트들(side cover plates);상기 서브모듈들의 상면에 탑재되고, 서브모듈들 및 측부 커버플레이트와 체결 결합되는 상부 커버 플레이트(upper cover plate);상기 서브모듈들의 외부 입출력 단자들이 위치하는 전지모듈 어셈블리의 전면에 장착되고, 서브모듈들, 베이스 플레이트 및 측부 커버 플레이트에 체결 결합되는 전면 커버 플레이트(front cover plate);상기 서브모듈들의 전면 단부들을 상호 고정하고, 서브모듈들의 외부 입출력 단자들을 연결하는 메인 버스 바(main bus bar); 및상기 서브모듈들의 후면 단부들을 상호 고정하는 브라켓(bracket);을 포함하는 것을 특징으로 하는 전지모듈 어셈블리.
- 제 1 항에 있어서, 상기 단위셀은, 판상형 전지셀이거나, 또는 전극단자들이 노출된 상태로 둘 이상의 판상형 전지셀들이 셀 커버에 장착되어 있는 전지셀 어셈블리인 것을 특징으로 하는 전지모듈 어셈블리.
- 제 2 항에 있어서, 상기 전지셀은 각형 이차전지 또는 파우치형 이차전지인 것을 특징으로 하는 전지모듈 어셈블리.
- 제 3 항에 있어서, 상기 파우치형 이차전지는 수지층과 금속층을 포함하는 라미네이트 시트에 전극조립체가 밀봉되어 있는 구조로 이루어진 것을 특징으로 하는 전지모듈 어셈블리.
- 제 4 항에 있어서, 상기 판상형 전지셀은 리튬 이차전지인 것을 특징으로 하는 전지모듈.
- 제 2 항에 있어서, 상기 셀 커버는 전극단자 부위를 제외하고 전지셀들의 외면을 감싸도록 상호 결합되는 한 쌍의 외장 부재인 것을 특징으로 하는 전지모듈 어셈블리.
- 제 1 항에 있어서, 상기 단위모듈에서 단위셀들은 병렬 연결되어 있는 것을 특징으로 하는 전지모듈 어셈블리.
- 제 7 항에 있어서, 상기 단위셀들은 전극단자들이 대면하도록 카트리지 상에 장착되어 있고, 상기 카트리지에 장착되어 있는 버스 바들에 의해 전극단자들이 병렬로 연결되어 있는 것을 특징으로 하는 전지모듈 어셈블리.
- 제 8 항에 있어서, 상기 단위셀들의 전극단자 연결부들 사이에는 상기 전극단자 연결부들을 카트리지에 정위치 고정하기 위한 고정부재가 장착되어 있는 것을 특징으로 하는 전지모듈 어셈블리.
- 제 9 항에 있어서, 상기 고정부재는, 전극단자 연결부들 사이의 형상에 대응하는 외면 형상을 가지고 중앙에 관통홈에 형성되어 있으며 카트리지 상에 장착되는 전기절연성의 돌출부, 및 상기 관통홈에 삽입되어 돌출부를 카트리지에 결합하는 체결부를 포함하고 있는 것을 특징으로 하는 전지모듈 어셈블리.
- 제 1 항에 있어서, 상기 카트리지의 양 측면에는 체결홈을 구비한 돌출부들이 형성되어 있고, 상기 체결홈을 관통하는 체결부재에 의해 카트리지들이 상호 결합되어 서브모듈을 형성하고 있는 것을 특징으로 하는 전지모듈 어셈블리.
- 제 1 항에 있어서, 상기 서브모듈에서 단위모듈들은 적층 계면에 냉매 유로가 형성되도록 적층되어 있고, 상기 서브모듈들은 냉매 유로를 제공할 수 있도록 상호 이격된 상태로 배열되어 있는 것을 특징으로 하는 전지모듈 어셈블리.
- 제 1 항에 있어서, 상기 서브모듈에서 단위모듈들은 직렬 연결되어 있는 것을 특징으로 하는 전지모듈 어셈블리.
- 제 1 항에 있어서, 상기 버스 바는 전극단자가 결합되어 있는 면의 일측 단부가 상향 또는 하향 절곡되어 있고, 상기 절곡된 일측 단부와 접속부재가 결합되어, 인접한 단위모듈과 연결을 이루고 있는 것을 특징으로 하는 전지모듈 어셈블리.
- 제 1 항에 있어서, 상기 측부 커버 플레이트에는 냉매가 유입될 수 있는 하나 이상의 냉매 유입구들이 형성되어 있는 것을 특징으로 하는 전지모듈 어셈블리.
- 제 1 항에 있어서, 상기 측부 커버 플레이트는,상기 서브모듈들의 측부를 감싸는 본체부;상기 본체부의 양단에 서브모듈들의 감싸는 형태로 절곡되어 연장된 구조로 형성되어 있고, 서브모듈들과 체결 고정되는 고정부; 및상기 본체부의 일측 단부에 형성된 손잡이;를 포함하고 있고, 상기 본체부에 냉매 유입구들이 형성되어 있는 것을 특징으로 하는 전지모듈 어셈블리.
- 제 1 항에 있어서, 상기 메인 버스 바는,판상형 본체부, 고정부, 및 상기 본체부 중앙에 관통되어 형성되어 있는 개구부를 포함하고 있고,상기 고정부에는 서브모듈들의 외부 입출력 단자들과 체결 고정될 수 있는 체결구가 형성되어 있는 것을 특징으로 하는 전지모듈 어셈블리.
- 제 1 항에 있어서, 상기 브라켓에는 상기 냉매 유로에 연통되는 냉매 배출구가 형성되어 있는 것을 특징으로 하는 전지모듈 어셈블리.
- 제 1 항에 있어서, 상기 브라켓은,판상형 본체부, 고정부, 및 상기 본체부 중앙에 관통되어 형성되어 있는 냉매 배출구를 포함하고 있고,상기 본체부는 서브모듈들의 후면 요철구조와 대응하는 형상의 요철부가 양단에 형성되어 있고,상기 고정부에는 서브모듈들의 후면에 체결 고정될 수 있는 체결구가 형성되어 있는 것을 특징으로 하는 전지모듈 어셈블리.
- 제 1 항에 있어서, 상기 상부 커버 플레이트 및 베이스 플레이트는 탄성을 가진 금속 판재로 이루어진 것을 특징으로 하는 전지모듈 어셈블리.
- 제 20 항에 있어서, 상기 상부 커버 플레이트 및 베이스 플레이트에는 요철구조의 보강 비드(bead)가 형성되어 있는 것을 특징으로 하는 전지모듈 어셈블리.
- 제 1 항에 따른 전지모듈 어셈블리를 전원으로 포함하는 것을 특징으로 하는 디바이스.
- 제 22 항에 있어서, 상기 디바이스는 전기자동차, 하이브리드 전기자동차, 플러그-인 하이브리드 전기자동차, 전력저장 장치, 비상용 전원장치, 전산실 전원장치, 휴대용 전원장치, 의료설비 전원장치, 소화설비 전원장치, 경보설비 전원장치 또는 피난설비 전원장치인 것을 특징으로 하는 디바이스.
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US14/779,514 US10062877B2 (en) | 2013-07-31 | 2014-07-29 | Battery module assembly |
JP2016518283A JP6212209B2 (ja) | 2013-07-31 | 2014-07-29 | 電池モジュールアセンブリ |
CN201480031842.1A CN105264687B (zh) | 2013-07-31 | 2014-07-29 | 电池模块组件 |
EP14832294.4A EP2991133B1 (en) | 2013-07-31 | 2014-07-29 | Battery module assembly |
US16/043,676 US10862082B2 (en) | 2013-07-31 | 2018-07-24 | Battery module assembly |
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KR1020130090849A KR101709562B1 (ko) | 2013-07-31 | 2013-07-31 | 전지모듈 어셈블리 |
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US14/779,514 A-371-Of-International US10062877B2 (en) | 2013-07-31 | 2014-07-29 | Battery module assembly |
US16/043,676 Continuation US10862082B2 (en) | 2013-07-31 | 2018-07-24 | Battery module assembly |
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EP (1) | EP2991133B1 (ko) |
JP (1) | JP6212209B2 (ko) |
KR (1) | KR101709562B1 (ko) |
CN (1) | CN105264687B (ko) |
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KR20150015169A (ko) | 2015-02-10 |
US20160133890A1 (en) | 2016-05-12 |
JP2016523431A (ja) | 2016-08-08 |
EP2991133A1 (en) | 2016-03-02 |
CN105264687B (zh) | 2018-01-12 |
US10862082B2 (en) | 2020-12-08 |
KR101709562B1 (ko) | 2017-03-08 |
EP2991133A4 (en) | 2016-03-16 |
US10062877B2 (en) | 2018-08-28 |
JP6212209B2 (ja) | 2017-10-11 |
CN105264687A (zh) | 2016-01-20 |
US20180331334A1 (en) | 2018-11-15 |
EP2991133B1 (en) | 2018-09-05 |
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