WO2013183945A1 - 안정성이 향상된 구조 및 높은 냉각 효율성을 갖는 전지모듈 - Google Patents
안정성이 향상된 구조 및 높은 냉각 효율성을 갖는 전지모듈 Download PDFInfo
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- WO2013183945A1 WO2013183945A1 PCT/KR2013/004979 KR2013004979W WO2013183945A1 WO 2013183945 A1 WO2013183945 A1 WO 2013183945A1 KR 2013004979 W KR2013004979 W KR 2013004979W WO 2013183945 A1 WO2013183945 A1 WO 2013183945A1
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- Prior art keywords
- battery
- module
- battery cell
- module case
- electrode terminals
- Prior art date
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Images
Classifications
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- 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
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- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
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- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
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- 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
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- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
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- H01M50/564—Terminals characterised by their manufacturing process
- H01M50/567—Terminals characterised by their manufacturing process by fixing means, e.g. screws, rivets or bolts
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- 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
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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
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Definitions
- the present invention relates to a battery module having improved stability and high cooling efficiency. More specifically, two or more plate-shaped battery cells in which electrode terminals are formed at one end thereof are stacked, and a surface of electrode terminals is located.
- a battery cell stack having a rectangular parallelepiped structure whose width is relatively smaller than the width and height of both sides; Among the six surfaces of the battery cell stack, each of the two surfaces having a relatively large area and the electrode terminals are bent to surround the surface where the electrode is located, and are made of a thermally conductive material releasing heat generated from the battery cell during charging and discharging.
- 1 module case And bent to surround side surfaces adjacent to both surfaces of the battery cell stack and a surface on which electrode terminals are located, and are coupled to the first module case, and through holes through which battery cell electrode terminals protrude outwards.
- a second module case formed of an electrically insulating material.
- 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).
- One or two or four battery cells are used for small mobile devices, whereas medium and large battery modules, which are electrically connected to a plurality of battery cells, are used in medium and large devices such as automobiles due to the necessity of high output capacity.
- medium and large battery modules are preferably manufactured in a small size and weight as possible
- square batteries and pouch-type batteries which can be charged with high integration and have a small weight to capacity, are mainly used as battery cells (unit cells) of medium and large battery modules.
- battery cells unit cells
- a pouch-type battery using an aluminum laminate sheet or the like as an exterior member has attracted much attention in recent years due to advantages such as low weight, low manufacturing cost, and easy form deformation.
- German Industrial Standard (DIN) of lithium secondary battery cells set as standardized by the German Automotive Industry Association (VDA) adopts rectangular battery cells of rectangular parallelepiped shape. Cases are on the rise.
- a pouch-type battery using an aluminum laminate sheet or the like as an exterior member is difficult to maintain a rigid shape of a rectangular parallelepiped structure to fit the standard size.
- FIG. 1 is a perspective view schematically showing a typical representative battery cell.
- the battery cell 10 is a plate-shaped battery cell 10 in which electrode tabs 11 and 12 are formed at one end thereof.
- the plate-shaped battery cell 10 is a structure in which an electrode assembly (not shown) is built in the pouch-type case 13 of the laminate sheet including a metal layer (not shown) and a resin layer (not shown). This is commonly referred to as a pouch type battery cell 10.
- the pouch-type case 13 has a laminate structure including a resin layer and a metal foil layer, and can be attached by applying heat and pressure to the sealing portion 14 to fuse the resin layers with each other. It can also be attached using.
- the exterior material 14 itself is not excellent in mechanical rigidity, in order to manufacture a battery module having a stable structure, in general, battery cells (unit cells) are mounted in a pack case such as a cartridge to manufacture a battery module. have.
- a mounting space is generally limited to a device or a vehicle on which a medium / large battery module is mounted, when the size of the battery module is increased due to the use of a pack case such as a cartridge, there is a problem of low space utilization.
- the low mechanical stiffness of the battery cell results in repeated expansion and contraction of the battery cell during charging and discharging, thereby causing a case where the heat fusion sites are separated.
- a battery module that can overcome the disadvantages of a pouch-type battery cell that is not excellent in mechanical rigidity, and can easily achieve a solid-size standard size square battery cell structure having a rectangular parallelepiped structure.
- the battery cells constituting the medium-large battery module is composed of a secondary battery capable of charging and discharging, such a high output large capacity secondary battery generates a large amount of heat during the charging and discharging process.
- the laminate sheet of the pouch-type battery widely used in the battery module is coated with a low thermal conductivity polymer material, it is difficult to effectively cool the temperature of the entire battery cell.
- a vehicle battery pack that is a high output large capacity battery requires a cooling system for cooling the battery cells embedded therein.
- a battery module mounted in a medium-large battery pack is generally manufactured by stacking a plurality of battery cells with high density, and stacking adjacent battery cells at regular intervals to remove heat generated during charging and discharging.
- the battery cells themselves may be sequentially stacked without a separate member at predetermined intervals, or in the case of battery cells having low mechanical rigidity, one or more combinations may be embedded in a cartridge or the like, and a plurality of such cartridges may be stacked.
- the battery module can be configured.
- a coolant flow path is formed between the battery cells or the battery modules so as to effectively remove heat accumulated between the stacked battery cells or the battery modules.
- this structure has a problem in that the total size of the battery module is increased because a plurality of refrigerant passages must be secured corresponding to the plurality of battery cells.
- 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 provide a battery cell stack having a rectangular parallelepiped structure in which the width of the surface on which the electrode terminals are located is relatively smaller than the width and height of both surfaces, and is made of a thermally conductive material releasing heat generated from the battery cells during charging and discharging.
- the module case and the second module case made of electrically insulating material can be stored and fixed so that no additional parts are required, and thus the production process efficiency can be improved by a simple assembly procedure. It is to provide correspondingly.
- Still another object of the present invention is to provide a rectangular battery module structure using the first module case and the second module case, wherein the first module case is made of a thermally conductive material releasing heat generated from the battery cell. Cooling design is easier than the structure, and it is possible to configure the square battery module structure by using the battery cell stack including the flexible material properties of the pouch, which has improved safety and stability than the conventional rigid can type battery cell structure. It is to provide a battery module.
- Two or more plate-shaped battery cells in which electrode terminals are formed at one end thereof, and a battery cell stack having a rectangular parallelepiped structure in which a width of a surface on which electrode terminals are positioned is smaller than a width and height of both sides;
- each of the two surfaces having a relatively large area and the electrode terminals are bent to surround the surface where the electrode is located, and are made of a thermally conductive material releasing heat generated from the battery cell during charging and discharging. 1 module case; And
- the battery cell stack is bent to surround side surfaces adjacent to the both sides and the electrode terminal, and is coupled to the first module case, and through holes are formed to protrude the battery cell electrode terminals to the outside.
- a second module case made of an electrically insulating material;
- Consists of a structure that includes.
- the plate-shaped battery cell for example, after mounting the positive electrode, the negative electrode, and the electrode assembly of the separator structure interposed between the positive electrode and the negative electrode in the battery case of the laminate sheet comprising a resin layer and a metal layer to the outer peripheral surface of the housing portion It may be a heat-sealed pouch-type battery cell.
- the plate-shaped battery cell preferably, when stacked for the configuration of the battery module, it may be a lithium secondary battery having a thin thickness and relatively wide width and length, preferably to minimize the overall size.
- a pouch-type battery using an aluminum laminate sheet or the like as an exterior member is difficult to maintain a rigid shape of a rectangular parallelepiped structure to fit a standard size.
- the battery module of the present invention includes a first module case and a second module case surrounding the outer surface of the pouch-type battery, a rectangular battery module structure of a standard size can be achieved by a simple assembly process.
- the pouch-type battery cell has a safe structural advantage over the rigid can (can) type battery cell.
- the pouch-type battery cell due to the flexible material properties of the pouch, swelling, gas vent (fire), swelling of the battery cell due to overcharge, over-discharge, high temperature exposure, etc. It has the advantage of showing safer behavior in safety issues of lithium secondary battery such as explosion and explosion.
- the standardized square battery cell-shaped battery module constructed of a pouch-type battery cell including the above advantages includes more advantages than the can-type square cell.
- the battery module of the present invention includes a first module case made of a thermally conductive material that emits heat generated from the battery cell during charging and discharging, thereby achieving a structure of a standardized rectangular battery cell and simultaneously cooling the battery cell. Can be achieved. Therefore, when constructing a battery system including the battery module of the present invention, it is possible to design a cooling structure of further improved cooling efficiency characteristics.
- the battery module of the present invention is a structure that can be assembled by easy coupling of the first module case and the second module case, the production process efficiency by a simple assembly process Can improve.
- the battery cells may have a structure that is connected in parallel. Therefore, the battery module of the present invention including such a structure can be connected in parallel by appropriately changing the number of battery cells stored therein, it is possible to design and manufacture a battery module corresponding to the desired electrical capacity.
- the battery cell laminate may have a structure in which a pad of a soft elastic material is further interposed at an interface between the battery cells.
- the pad is not particularly limited as long as it is a soft elastic material that can absorb a change in thickness of each battery cell of the battery cell stack to maintain a standard size.
- the pad may be a polyurethane material or a silicon material.
- the pad of the soft elastic material can absorb the change in thickness due to the swelling of the pouch-type battery cell, and can always maintain the standard size even when the thickness of the battery cell changes, thereby achieving a more stable and robust battery module structure. have.
- the material of the first module case is not particularly limited as long as the material has excellent thermal conductivity so as to absorb heat generated from the battery cell and radiate heat to the outside, but preferably a structure made of a thermally conductive metal plate. Can be.
- the first module case is manufactured by cutting a thermally conductive metal sheet to a size corresponding to the planar size of the battery cell stack, bending and pressing to form a 'c' shape in a vertical cross section. It may be a structure.
- the first module case made of a metal material directly contacts the side part of the plate-shaped battery cell, it can quickly and efficiently conduct heat generated from the battery cell, and thus spaced apart between battery cells included in at least one unit module. Since it is possible to perform cooling of the battery cell stack with higher efficiency than the conventional system, the heat dissipation efficiency of the battery module can be maximized, and the battery cells can be stacked with high integration.
- a thermally conductive medium may be interposed between the battery cell stack and the first module case.
- the thermally conductive medium is not particularly limited as long as it is a thermally conductive material having excellent thermal conductivity. (thermally conductive grease, thermally conductive epoxy-based bond, thermally conductive silicone pad, thermally conductive adhesive tape and graphite sheet) It may be more than one.
- the second module case is made of an electrically insulating material excellent in mechanical rigidity, preferably a plastic material It can be produced as. This protects the battery cells mounted inside the module case from external mechanical shocks and enables the battery cells to be stably mounted on the battery modules.
- the second module case formed of an electrically insulating material having excellent mechanical rigidity can easily protect the electrode terminal portion of the battery cell stack housed therein from electrical shorts or mechanical damage from the outside. Can be.
- a surface on which the electrode terminals of the battery cell stack are positioned may be a structure in which external input / output terminals to which the electrode terminals are electrically connected are formed.
- the external input / output terminals may be formed on the side, the top or the bottom of the second module case, the formation position is on the surface where the electrode terminals of the battery cell stack accommodated in the second module case is located. It depends.
- the external input / output terminals may be two terminal bolts, specifically, the terminal bolts may be insert injection molding, multiple injection molding, melt core injection soluble. core injection molding, gas-assisted injection molding, injection compression molding, structural foam injection molding, multilayer injection molding, live-feed injection molding On the second module case by one method selected from the group consisting of live-feed injection molding, push-pull injection molding, and injection molding of reactive materials. It may be a structure to be mounted.
- the terminal bolts can be mounted to the second module case by the above method, so that an additional member necessary for fastening the metal material and the insulating material is not necessary.
- an additional member necessary for fastening the metal material and the insulating material is not necessary.
- the additional space by the mounting of the additional member and the additional process for the mounting of the additional member is not necessary, it is possible to achieve an efficient assembly process of the battery module.
- a bus bar for electrically connecting the electrode terminals of the battery cells to the terminal bolts may be additionally mounted on the second module case, and the bus bar may have an 'I' shaped bus bar structure. .
- the bus bar may have a structure including a head having a through hole for mounting to a terminal bolt and a plate-shaped body extending from the head.
- the bus bar may have a structure in which the bus bar is mounted on the terminal bolt and is electrically coupled to the electrode terminals while being seated on the surface of the second module case in which the electrode terminals of the battery cell stack are located.
- the coupling of the bus bar and the electrode terminals is, by bending the upwardly protruding electrode terminals at right angles to contact the plate-shaped body of the bus bar, and then the contacted electrode terminals and the bus bar by laser welding or spot welding ( It can be a structure achieved by electrically coupling by spot welding).
- the external input / output terminals can be easily connected from the electrode terminals of the battery cells stored therein by the above method.
- the bus bar of such a structure is mounted on the upper part of the second module case and coupled to the electrode terminals by welding, thereby achieving a battery module having a more robust and stable structure.
- the welding process of the electrode terminal and the bus bar is very easy, and since no additional space for mounting the additional member and additional space by mounting the additional member is required, an efficient assembly process of the battery module can be achieved. Do it.
- the first module case and the second module case may be a structure that is fastened by an interference fit.
- the interference fitting preferably, the step portion formed on the three corner sides of the four corner sides of each of the two sides of the first module case in contact with the second module case; And protrusions formed inside three corner sides of the second module case contacting the first module case.
- This assembly fastening method does not require an additional fastening connection member, and does not require an additional space for mounting the connection member and additional space by mounting the connection member, thereby achieving a compact structure and an efficient assembly process of the battery module. It allows you to.
- the present invention also provides a battery pack in which the battery module is mounted in at least one pack case, and a device including such a battery pack as a power source, the device is specifically an electric vehicle, a hybrid electric vehicle, a plug- Phosphorus hybrid electric vehicle or power storage device.
- FIG. 1 is a perspective view of a battery cell according to the present invention.
- FIG. 2 is a perspective view of a battery cell stack according to the present invention.
- FIG. 3 is a perspective view of a second module case according to the invention.
- FIG. 4 is a perspective view of a first module case according to the present invention.
- FIG. 5 is an exploded view of a battery module according to the present invention.
- FIG. 6 is a front view of a battery module according to the present invention.
- FIG. 7 is a cutaway view of “A”-“A” of FIG. 6; FIG.
- FIG. 8 is an enlarged view of a portion “B” of FIG. 7;
- FIGS. 9 and 10 are perspective views illustrating a state in which a bus bar is mounted and a state in which the bus bar is mounted in the battery module according to the present invention.
- FIG. 1 and 2 are perspective views of a battery cell and a battery cell stack according to the present invention.
- 3 and 4 show perspective views of the second module case and the first module case according to the present invention.
- the battery cell stack 100 is stacked such that the surface 13 having a relatively large area among the six surfaces of the battery cells 10 contacts each other.
- the battery cell stack 100 has a rectangular parallelepiped structure in which the width b of the surface on which the electrode terminals 11 and 12 are located is relatively smaller than the width w and height h of both surfaces.
- the second module case 200 has a structure including an upper portion 210 and a side portion 220.
- the upper 210 of the second module case 200 has slit-shaped through holes 211 so that the electrode terminals 11 and 12 of the battery cell stack 100 may be exposed to the outside. , 212).
- mounting protrusions formed at both ends of the through holes 211 and 212 for easy coupling and mounting of another battery module (not shown) or a device (not shown) on which the battery module is mounted. 213 is formed.
- the side part 220 of the second module case 200 includes an accommodating part 221 configured to accommodate and fix the sealing part 14 of the battery cell stack 100 to the inside.
- an indentation 230 having a '-' shape is formed. The indentation 230 is formed for easy assembly with the first module case 200, which will be described in detail later.
- the first module case 300 cuts the thermally conductive metal sheet into a size corresponding to the planar size 13 of the battery cell stack 100 and then bends 301 to form a 'c' shape on a vertical cross section. Press-molded.
- the first module case 300 includes a heat dissipation part 310, a lower fixing part 320, side assembly parts 331 and 332, and a battery cell accommodating part 340.
- FIG. 5 is an exploded view of a battery module according to the present invention.
- the battery cell stack 100 is accommodated 701 in the battery cell accommodating part 340 of the first module case 300, and then the second module case 200 is provided. ) And the assembly of the first module case 300 (702) is completed.
- FIG. 6 is a front view of the battery module according to the present invention.
- the battery module according to the present invention accommodates the battery cell stack 100 therein and assembles the first module case 300 and the second module case 200 (701). , 702).
- the assembly 701, 702 is formed on the lower end of the protrusion 321 and the second module case 200 which are formed to extend to both ends 321 of the lower fixing part 320 of the first module case 300. It is easily achieved by the engagement of a 'indentation 230.
- FIG. 7 is a cutaway view taken along line “A”-“A” of FIG. 6, and FIG. 8 is an enlarged view of portion “B” of FIG. 7.
- the first module case 300 and the second module case 200 may include the side assembly part 332 of the first module case 300 and the side part 220 of the second module case 200. It is assembled by the interference fit of the fixing protrusion 223 formed in the accommodating part 221 of this.
- a pad 20 of a soft elastic material is mounted at the interface of the battery cells 10.
- FIG. 9 is a perspective view illustrating a state in which a bus bar is mounted on the battery module according to the present invention.
- terminal bolts 410 and 420 are formed on an upper portion 210 of the second module case 200 by an insert injection molding method.
- the electrode terminals 11 and 12 of the battery cell stack 100 accommodated therein by the first module case 300 and the second module case 200 may be formed on the upper portion of the second module case 200.
- Slit-shaped through holes 211 and 212 formed in 210 are exposed upwardly through the through holes 211 and 212.
- the bus bars 510 and 520 are formed in an 'I' shape so as to be mounted on the upper portion 210 of the second module case 200 by the terminal bolts 410 and 420.
- the bus bars 510 and 520 may include heads 511 and 521 and headways 511 and 521 having through holes 512 and 522 for mounting to the terminal bolts 410 and 420. It is formed in the structure of the plate-shaped main body 513, 523 extended from ().
- FIG. 10 is a perspective view showing a bus bar mounted on the battery module according to the present invention.
- the coupling between the bus bars 510 and 520 and the electrode terminals 11 and 12 may be performed by bending the upwardly protruding electrode terminals 11 and 12 at right angles. After contacting the plate-shaped bodies 513 and 523 of 520, the contacted electrode terminals 11 and 12 and the bus bars 510 and 520 are electrically coupled by laser welding.
- the battery module according to the present invention is capable of easier cooling design than the conventional battery module structure, and constitutes a rectangular battery module structure by utilizing a battery cell stack including a flexible material properties of the pouch. It is possible to achieve improved safety and stability than the conventional rigid can type battery cell structure, and to eliminate the need for additional parts, to improve the production process efficiency by simple assembly procedure, and to adopt the standard size square battery module structure. Can respond quickly to the needs of
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Abstract
Description
Claims (24)
- 일측 단부에 전극 단자들이 형성되어 있는 판상형 전지셀 둘 이상이 적층되어 있고, 전극단자들이 위치하는 면의 폭이 양면들의 너비 및 높이보다 상대적으로 작은 직육면체 구조를 가지는 전지셀 적층체;상기 전지셀 적층체의 6면 중에서 상대적으로 큰 면적의 양면들과 전극단자들이 위치하는 면의 대향면을 감싸도록 절곡되어 있고, 충방전시 전지셀로부터 발생한 열을 방출하는 열전도성 소재로 이루어진 제 1 모듈 케이스; 및상기 전지셀 적층체에서 상기 양면들에 인접한 측면들과 전극단자들이 위치하는 면을 감싸도록 절곡되어 있고, 상기 제 1 모듈 케이스와 체결되며, 전지셀 전극단자들이 외부로 돌출되기 위한 관통홈들이 형성되어 있고, 전기절연성 소재로 이루어진 제 2 모듈 케이스;를 포함하고 있는 것을 특징으로 하는 전지모듈.
- 제 1 항에 있어서, 상기 판상형 전지셀은 수지층과 금속층을 포함하는 라미네이트 시트의 전지케이스에 양극, 음극, 및 상기 양극과 음극 사이에 개재된 분리막 구조의 전극조립체를 장착한 후 수납부의 외주면을 열융착한 파우치형 전지셀인 것을 특징으로 하는 전지모듈.
- 제 1 항에 있어서, 상기 판상형 전지셀은 리튬 이차전지인 것을 특징으로 하는 전지모듈.
- 제 1 항에 있어서, 상기 전지셀들은 병렬 연결되어 있는 것을 특징으로 하는 전지모듈.
- 제 1 항에 있어서, 상기 전지셀 적층체에서 각 전지셀들 사이의 계면에 연질 탄성 재질의 패드가 추가로 개재되어 있는 것을 특징으로 하는 전지모듈.
- 제 5 항에 있어서, 상기 패드는 폴리우레탄 소재 또는 실리콘 소재인 것을 특징으로 하는 전지모듈.
- 제 1 항에 있어서, 상기 제 1 모듈 케이스는 열전도성 금속 판재로 이루어진 것을 특징으로 하는 전지모듈.
- 제 7 항에 있어서, 상기 제 1 모듈 케이스는 열전도성 금속 판재를 전지셀 적층체의 평면상 크기에 대응하는 크기로 절단한 후 절곡하여 수직 단면상으로 'ㄷ'자형으로 프레스 성형(press molding)하여 제작되는 것을 특징으로 하는 전지모듈.
- 제 1 항에 있어서, 상기 제 2 모듈 케이스는 플라스틱 소재로 이루어진 것을 특징으로 하는 전지모듈.
- 제 1 항에 있어서, 상기 제 2 모듈 케이스에서 전지셀 적층체의 전극단자들이 위치하는 면에는 상기 전극단자들이 전기적으로 연결되는 외부 입출력 단자들이 형성되어 있는 것을 특징으로 하는 전지모듈.
- 제 10 항에 있어서, 상기 외부 입출력 단자들은 2개의 터미널 볼트들(terminal bolt)인 것을 특징으로 하는 전지모듈.
- 제 11 항에 있어서, 상기 터미널 볼트들은 인서트 사출성형(insert injection molding), 다중 사출성형(sandwich molding), 용융 코아 사출성형(soluble core injection molding), 가스 사출성형(gas-assisted injection molding), 사출 압축 성형(injection compression molding), 발포 사출성형(structural foam injection molding), 다층 사출성형(microlayer injection molding), 라이브-피드 사출성형(live-feed injection molding), 푸쉬-풀 사출성형(push-pull injection molding), 및 반응 재료의 사출성형(injection molding of reactive materials)으로 이루어진 군에서 선택되는 하나의 방법에 의해 제 2 모듈 케이스 상에 장착되는 것을 특징으로 하는 전지모듈.
- 제 11 항에 있어서, 상기 터미널 볼트들에 대해 전지셀들의 전극단자들을 전기적으로 연결하기 위한 버스 바가 제 2 모듈 케이스 상에 추가로 장착되어 있는 것을 특징으로 하는 전지모듈.
- 제 13 항에 있어서, 상기 버스 바는 'I' 자형 버스 바인 것을 특징으로 하는 전지모듈.
- 제 14 항에 있어서, 상기 버스 바는 터미널 볼트에 장착되기 위한 관통구가 형성되어 있는 헤드와 상기 헤드로부터 연장되어 있는 판상 본체로 이루어진 것을 특징으로 하는 전지모듈.
- 제 15 항에 있어서, 상기 버스 바는 전지셀 적층체의 전극단자들이 위치하는 제 2 모듈 케이스의 면에 안착된 상태로 터미널 볼트에 결속 장착되어 전극단자들과 전기적으로 결합되는 것을 특징으로 하는 전지모듈.
- 제 16 항에 있어서, 상기 버스 바와 전극단자들의 결합은, 상향 돌출된 전극단자들을 직각으로 절곡하여 버스 바의 판상 본체에 접촉시킨 후, 접촉된 전극단자들과 버스 바를 레이저 용접(laser welding) 또는 스팟 용접(spot welding)에 의해 전기적으로 결합시켜 달성되는 것을 특징으로 하는 전지모듈.
- 제 1 항에 있어서, 상기 제 1 모듈 케이스 및 제 2 모듈 케이스는 억지끼워맞춤(interference fit)에 의해 체결되는 것을 특징으로 하는 전지모듈.
- 제 18 항에 있어서,상기 제 1 모듈 케이스의 양면들 각각의 4개의 모서리 변들 중에 제 2 모듈 케이스와 접촉되는 3개의 모서리 변들에 형성된 단차부들; 및상기 제 2 모듈 케이스의 제 1 모듈 케이스와 접촉되는 3개의 모서리 변들의 내부에 형성된 돌기부들;을 포함하고 있는 것을 특징으로 하는 전지모듈.
- 제 1 항에 있어서, 상기 전지셀 적층체와 제 1 모듈 케이스의 계면에는 열전도 매개체가 개재되어 있는 것을 특징으로 하는 전지모듈.
- 제 20 항에 있어서, 상기 열전도 매개체는 방열 그리스(thermally conductive grease), 방열 에폭시계 접착제(thermally conductive epoxy-based bond), 방열 실리콘 패드(thermally conductive silicone pad), 방열 접착테이프(thermally conductive adhesive tape) 및 흑연 시트(graphite sheet)로 이루어진 군에서 선택되는 하나 이상인 것을 특징으로 하는 전지모듈.
- 제 1 항에 따른 전지모듈이 하나 이상 팩 케이스에 장착되어 있는 것을 특징으로 하는 전지팩.
- 제 22 항에 따른 전지팩을 전원으로 포함하는 것을 특징으로 하는 디바이스.
- 제 23 항에 있어서, 상기 디바이스는 전기자동차, 하이브리드 전기자동차, 플러그-인 하이브리드 전기자동차 또는 전력저장 장치인 것을 특징으로 하는 디바이스.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015511385A JP6014752B2 (ja) | 2012-06-07 | 2013-06-05 | 安定性が向上した構造及び高い冷却効率性を有する電池モジュール |
EP13801312.3A EP2838133B1 (en) | 2012-06-07 | 2013-06-05 | Battery module having stability-improved structure and high cooling efficiency |
US14/535,509 US9484592B2 (en) | 2012-06-07 | 2014-11-07 | Battery module having structure of improved stability and high cooling efficiency |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2012-0060757 | 2012-06-07 | ||
KR1020120060757A KR101392799B1 (ko) | 2012-06-07 | 2012-06-07 | 안정성이 향상된 구조 및 높은 냉각 효율성을 갖는 전지모듈 |
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EP2838133A4 (en) | 2015-04-29 |
JP6014752B2 (ja) | 2016-10-25 |
US20150064540A1 (en) | 2015-03-05 |
KR101392799B1 (ko) | 2014-05-14 |
JP2015520922A (ja) | 2015-07-23 |
KR20130137299A (ko) | 2013-12-17 |
EP2838133A1 (en) | 2015-02-18 |
EP2838133B1 (en) | 2016-09-07 |
US9484592B2 (en) | 2016-11-01 |
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