WO2023085706A1 - 전지 모듈 및 이를 포함하는 전지팩 - Google Patents
전지 모듈 및 이를 포함하는 전지팩 Download PDFInfo
- Publication number
- WO2023085706A1 WO2023085706A1 PCT/KR2022/017332 KR2022017332W WO2023085706A1 WO 2023085706 A1 WO2023085706 A1 WO 2023085706A1 KR 2022017332 W KR2022017332 W KR 2022017332W WO 2023085706 A1 WO2023085706 A1 WO 2023085706A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cell frame
- battery module
- battery
- paragraph
- adhesive layer
- Prior art date
Links
- 239000012790 adhesive layer Substances 0.000 claims abstract description 36
- 239000011347 resin Substances 0.000 claims description 21
- 229920005989 resin Polymers 0.000 claims description 21
- 238000000016 photochemical curing Methods 0.000 claims description 6
- 238000002834 transmittance Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 239000003999 initiator Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000001029 thermal curing Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/643—Cylindrical 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- 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
- H01M10/6554—Rods or plates
-
- 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
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/227—Organic material
-
- 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
- H01M50/233—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
-
- 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 and a battery pack including the same, and more particularly, to a battery module having a reduced process time and a battery pack including the same.
- Secondary batteries are attracting much attention as energy sources for power devices such as electric bicycles, electric vehicles, and hybrid electric vehicles as well as mobile devices such as mobile phones, digital cameras, and laptop computers.
- Lithium secondary batteries which are widely used among secondary batteries, can be classified into a can-type secondary battery in which the electrode assembly is housed in a metal can and a pouch-type secondary battery in which the electrode assembly is housed in a pouch of an aluminum laminate sheet, depending on the shape of the exterior material.
- a metal can in which an electrode assembly is accommodated may be manufactured in a cylindrical shape.
- Such a can-type secondary battery may implement a battery module by having a housing accommodating a plurality of secondary batteries.
- a plurality of secondary batteries are accommodated in the inner space of the housing of the battery module without a fixing means, in an environment where vibration and shock caused by falling are frequent when a vehicle equipped with the battery module moves, the accommodation space inside the housing In the secondary battery, the secondary battery is easily moved, and thus, problems such as damage to the secondary battery or disconnection of the connection between the electrode terminal and the bus bar may occur.
- An object to be solved by the present invention is to provide a battery module having a reduced process time and a battery pack including the battery module.
- a battery module includes a bottom plate, a cell frame positioned on the bottom plate, a plurality of battery cells mounted on the cell frame, and an adhesive layer positioned between the bottom plate and the plurality of battery cells. Including, the cell frame has light transmission.
- the adhesive layer may be formed of a photocurable resin.
- the cell frame may have a plurality of holes through which the battery cells are mounted.
- the adhesive layer may be formed in the plurality of holes and may contact at least one of the bottom plate and the bottom portion of the battery cell.
- the cell frame may be formed of an injection molding resin that generates total internal reflection into the cell frame.
- the resin may have a transmittance of 90% or more.
- the battery module may further include a diffuse reflection member formed on a portion of a surface of the cell frame.
- the diffuse reflection member may be formed on an interface between the cell frame and the adhesive layer.
- Light entering the cell frame may pass through the diffuse reflection member and be emitted to the adhesive layer, thereby photocuring the adhesive layer.
- the adhesive layer may include a photocuring initiator.
- the bottom plate may be a cooling plate.
- the battery cell may be cylindrical.
- the bottom plate and the cell frame may be integrally formed.
- a plurality of light paths may be formed inside the cell frame.
- a battery pack according to another embodiment of the present invention includes the battery module described above.
- a process time may be reduced by using a light-transmissive cell frame having a total reflection function and a photocurable resin as an adhesive.
- FIG. 1 is a view showing a battery module according to a comparative example.
- FIG. 2 is a diagram illustrating a method of forming a battery module according to the comparative example of FIG. 1 .
- FIG. 3 is a diagram showing a battery module according to an embodiment of the present invention.
- FIG. 4 is a plan view of the cell frame shown in FIG. 3;
- FIG. 5 is a diagram illustrating a method of forming a battery module according to the embodiment of FIG. 3 .
- FIG. 6 is a view showing a state in which the adhesive layer of FIG. 5 is cured.
- FIG. 7 is an enlarged view of region P of FIG. 6 .
- a part such as a layer, film, region, plate, etc.
- another part is in the middle.
- a part is said to be “directly on” another part, it means that there is no other part in between.
- a reference part means to be located above or below the reference part, and to necessarily be located “above” or "on” in the opposite direction of gravity does not mean no.
- planar image it means when the target part is viewed from above, and when it is referred to as “cross-sectional image”, it means when a cross section of the target part cut vertically is viewed from the side.
- FIG. 1 is a view showing a battery module according to a comparative example.
- FIG. 2 is a diagram illustrating a method of forming a battery module according to the comparative example of FIG. 1 .
- the battery module 50 includes a bottom plate 20, a cell frame 30 positioned on the bottom plate 20, and a plurality of holes 30h formed in the cell frame 30. It includes battery cells 10 mounted on each. At this time, in order to fix the battery cell 10 to the bottom plate 20, the fixing adhesive layer 40 may be formed inside the plurality of holes 30h.
- At least one battery module 50 may be disposed inside the chamber 60 and heat may be applied to the inside of the chamber 60 through a heater 70 or the like.
- An adhesive made of a thermosetting resin is applied to the plurality of holes 30h formed in the cell frame 30 shown in FIG. 1, and the adhesive is thermally cured to form the adhesive layer 40 shown in FIG.
- the battery cell 10 may be fixed to the bottom plate 20 by (40). However, it may take a lot of processing time until the adhesive layer 40 is formed by performing thermal curing in the chamber 60 .
- FIG. 3 is a diagram showing a battery module according to an embodiment of the present invention.
- FIG. 4 is a plan view of the cell frame shown in FIG. 3;
- the battery module 100 includes a bottom plate 120, a cell frame 130 positioned on the bottom plate 120, and a plurality of batteries mounted on the cell frame 130. It includes the cell 110 and the adhesive layer 140 positioned between the bottom plate 120 and the plurality of battery cells 110 . At this time, the adhesive layer 140 may contact at least one of the bottom plate 120 and the bottom of the battery cell 110 .
- the bottom plate 120 may be a cooling plate for cooling the battery cell 110 .
- the bottom plate 120 itself is not a cooling plate, and is used to support the cell frame 130 accommodating the battery cells 110, and a separate heat sink may be formed under the bottom plate 120.
- the cell frame 130 may have light transmittance. As the cell frame 130 has light transmittance, light generated from the light source unit can pass through the cell frame 130 in a manufacturing method of the battery module 100 described below.
- the cell frame 130 may have a transparent property.
- the cell frame 130 is preferably formed of a resin that generates total internal reflection into the cell frame 130 . At this time, the resin may have a transmittance of 90% or more.
- the resin may be an injection molding resin.
- a plurality of holes 130h for mounting the battery cells 110 may be formed in the cell frame 130 .
- the adhesive layer 140 is formed to contact the bottom plate 120 and the cell frame 130, and the battery cells 110 may be disposed on the adhesive layer 140.
- the hole 130h formed in the cell frame 130 according to the present embodiment may be cylindrical, and the battery cell 110 is preferably a cylindrical cell suitable for being mounted in the cylindrical hole 130h.
- the adhesive layer 140 may be formed of a photocurable resin.
- the photocurable resin may be formed of acrylic, silicone, epoxy, or the like, and the adhesive layer 140 preferably includes a photocuring initiator.
- the photocurable resin constituting the adhesive layer receives light, it is cured by the photocuring initiator to form the adhesive layer 140, and the battery cell 110 is connected to the cell frame on the bottom plate 120 by the adhesive layer 140 ( 130) can be fixed.
- the cell frame 130 may include a portion having holes 130h in which the plurality of battery cells 110 are mounted, and side frames 130s. However, it is not limited thereto, and a cell frame 130 having a structure in which a portion having holes 130h in which the plurality of battery cells 110 are mounted and the side frames 130s are integrally formed may be formed.
- the battery module 100 shown in FIG. 3 may be a cross-sectional view taken along the line A-A′ of FIG. 4 .
- FIG. 5 is a diagram illustrating a method of forming a battery module according to the embodiment of FIG. 3 .
- the battery module 100 disposed inside the chamber 160 shows only a portion of the plurality of battery cells 110 mounted on the cell frame 130 for convenience of description and illustration.
- At least one battery module 100 may be placed inside the chamber 160 .
- a light source unit 170 is formed inside the chamber 160 to irradiate at least one battery module 100 with light LIGHT.
- the light source unit 170 is located below the upper end of the chamber 160, and by irradiating light downward, the light can reach the cell frame 130 of the battery module 100 disposed inside the chamber 160. .
- the light source unit 170 may use an ultraviolet lamp or a halogen lamp.
- An adhesive made of a photocurable resin is applied to the plurality of holes 130h formed in the cell frame 130, and the adhesive is photocured to form the adhesive layer 140 shown in FIG.
- the battery cell 110 may be fixed to the bottom plate 120 by the.
- a process of forming the adhesive layer 140 by photocuring will be described in detail with reference to FIGS. 6 and 7 .
- FIG. 6 is a view showing a state in which the adhesive layer of FIG. 5 is cured.
- FIG. 7 is an enlarged view of region P of FIG. 6 .
- Light entering the cell frame 130 may have several paths.
- the battery cell 110 may be a can-type secondary battery, and an electrode assembly included in the battery cell 110 may be wrapped in a case made of metal.
- the light that has entered the cell frame 130 is totally reflected and may be emitted to the outside of the cell frame 130 when it encounters a diffuse reflection member 190 described below. Therefore, according to the present embodiment, light entering the cell frame 130 can be emitted from the target portion.
- the cell frame 130 is formed of a resin that generates total internal reflection into the cell frame 130, light entering the cell frame 130 is prevented from escaping to the outside of the cell frame 130. can do. In other words, after light enters the cell frame 130 having light transmission, it may be totally reflected into the cell frame 130 so that it does not go out of the cell frame 130 . Therefore, since the light entering the cell frame 130 is confined within the cell frame 130, light efficiency can be increased.
- a resin forming the cell frame 130 may have a high refractive index compared to a medium outside the cell frame 130 .
- the resin forming the cell frame 130 may be polymethyl methacrylate (PMMA) or polycarbonate (PC).
- a diffuse reflection member 190 may be formed on a portion of the surface of the cell frame 130 as shown in FIG. 7 .
- the diffuse reflection pattern 190 can be formed in various patterns that cause diffuse reflection, such as intaglios and embossments.
- the diffuse reflection member 190 may be formed on a boundary surface between the cell frame 130 and the adhesive layer 140 . Light entering the cell frame 130 passes through the diffuse reflection pattern 190 and is emitted to the adhesive layer 140 so that the adhesive layer 140 can be photocured.
- the diffuse reflection member 190 has been described as a diffuse reflection pattern, but the diffuse reflection member 190 is not limited thereto, and the diffuse reflection member 190 may also include a case where particles are put inside to cause diffuse reflection.
- the plurality of light paths formed inside the cell frame 130 may be generated by bending paths of light entering from outside the cell frame 130 several times inside the cell frame 130 .
- the cell frame 130 according to the present embodiment may be formed by injection molding, and during the injection molding, the diffuse reflection pattern 190 described above may be simultaneously formed on the surface of the cell frame 130 .
- the curing time of the photocurable resin for fixing the battery cell 110 to the bottom plate 120 can be significantly reduced by the diffuse reflection pattern 190 formed on the surface of the cell frame 130 .
- one or more battery modules according to an embodiment of the present invention may be packaged in a pack case to form a battery pack.
- the battery module described above and the battery pack including the battery module may be applied to various devices.
- Such a device may be applied to means of transportation such as an electric bicycle, an electric vehicle, or a hybrid vehicle, but the present invention is not limited thereto and is applicable to various devices capable of using a battery module and a battery pack including the battery module, which is also applicable to the present invention. It belongs to the scope of the right of invention.
- battery module 10 battery cell
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims (15)
- 바텀 플레이트,상기 바텀 플레이트 상에 위치하는 셀 프레임,상기 셀 프레임에 장착되는 복수의 전지셀, 및상기 바텀 플레이트와 상기 복수의 전지셀 사이에 위치하는 접착층을 포함하고,상기 셀 프레임은 광투과성을 갖는 전지 모듈.
- 제1항에서,상기 접착층은 광경화성 수지(resin)로 형성되는 전지 모듈.
- 제1항에서,상기 셀 프레임은 상기 전지셀들이 장착되기 위한 복수의 홀이 형성되어 있는 전지 모듈.
- 제3항에서,상기 접착층은 상기 복수의 홀에 형성되고, 상기 바텀 플레이트 및 상기 전지셀 바닥부 중 적어도 하나와 접촉하는 전지 모듈.
- 제1항에서,상기 셀 프레임은 상기 셀 프레임 내부로 전반사를 발생시키는 수지(resin)로 형성되는 전지 모듈.
- 제5항에서,상기 수지(resin)는 투과율 90% 이상인 전지 모듈.
- 제1항에서,상기 셀 프레임 표면 일부에 형성되는 난반사 부재를 더 포함하는 전지 모듈.
- 제7항에서,상기 난반사 부재는 상기 셀 프레임과 상기 접착층 경계면에 형성되는 전지 모듈.
- 제8항에서,상기 셀 프레임으로 들어온 광이 상기 난반사 부재를 통과하여 상기 접착층으로 방출되어 상기 접착층이 광경화되는 전지 모듈.
- 제1항에서,상기 접착층은 광경화 개시제를 포함하는 전지 모듈.
- 제1항에서,상기 바텀 플레이트는 냉각 플레이트인 전지 모듈.
- 제1항에서,상기 전지셀은 원통형인 전지 모듈.
- 제1항에서,상기 바텀 플레이트와 상기 셀 프레임이 일체형으로 형성되는 전지 모듈.
- 제1항에서,상기 셀 프레임 내부에서 복수의 광 경로가 형성되는 전지 모듈.
- 제1항에 따른 전지 모듈을 포함하는 전지팩.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22893127.5A EP4369486A1 (en) | 2021-11-15 | 2022-11-07 | Battery module and battery pack including same |
CN202280058770.4A CN117916934A (zh) | 2021-11-15 | 2022-11-07 | 电池模块和包括该电池模块的电池组 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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KR10-2021-0156325 | 2021-11-15 | ||
KR20210156325 | 2021-11-15 | ||
KR10-2022-0145759 | 2022-11-04 | ||
KR1020220145759A KR20230071065A (ko) | 2021-11-15 | 2022-11-04 | 전지 모듈 및 이를 포함하는 전지팩 |
Publications (1)
Publication Number | Publication Date |
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WO2023085706A1 true WO2023085706A1 (ko) | 2023-05-19 |
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PCT/KR2022/017332 WO2023085706A1 (ko) | 2021-11-15 | 2022-11-07 | 전지 모듈 및 이를 포함하는 전지팩 |
Country Status (2)
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EP (1) | EP4369486A1 (ko) |
WO (1) | WO2023085706A1 (ko) |
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2022
- 2022-11-07 WO PCT/KR2022/017332 patent/WO2023085706A1/ko active Application Filing
- 2022-11-07 EP EP22893127.5A patent/EP4369486A1/en active Pending
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KR20100100943A (ko) * | 2007-12-06 | 2010-09-15 | 발레오 에뀝망 엘렉뜨리끄 모떼르 | 초대용량 저장 유닛을 수용하기 위한 트레이를 포함하는 전기 공급 장치 |
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KR20210156325A (ko) | 2019-05-15 | 2021-12-24 | 코닝 인코포레이티드 | 초박형 유리 패널들에서의 실시간 응력 시각화를 통한 에지 강도 테스트를 위한 시스템 및 방법 |
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