KR20170050445A - Pouch type secondary battery - Google Patents
Pouch type secondary battery Download PDFInfo
- Publication number
- KR20170050445A KR20170050445A KR1020150151977A KR20150151977A KR20170050445A KR 20170050445 A KR20170050445 A KR 20170050445A KR 1020150151977 A KR1020150151977 A KR 1020150151977A KR 20150151977 A KR20150151977 A KR 20150151977A KR 20170050445 A KR20170050445 A KR 20170050445A
- Authority
- KR
- South Korea
- Prior art keywords
- pouch
- cooling member
- secondary battery
- electrode
- pouch type
- Prior art date
Links
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive Effects 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 4
- 230000020169 heat generation Effects 0.000 abstract description 4
- 239000010949 copper Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0nMS4wJyBlbmNvZGluZz0naXNvLTg4NTktMSc/Pgo8c3ZnIHZlcnNpb249JzEuMScgYmFzZVByb2ZpbGU9J2Z1bGwnCiAgICAgICAgICAgICAgeG1sbnM9J2h0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnJwogICAgICAgICAgICAgICAgICAgICAgeG1sbnM6cmRraXQ9J2h0dHA6Ly93d3cucmRraXQub3JnL3htbCcKICAgICAgICAgICAgICAgICAgICAgIHhtbG5zOnhsaW5rPSdodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rJwogICAgICAgICAgICAgICAgICB4bWw6c3BhY2U9J3ByZXNlcnZlJwp3aWR0aD0nMzAwcHgnIGhlaWdodD0nMzAwcHgnIHZpZXdCb3g9JzAgMCAzMDAgMzAwJz4KPCEtLSBFTkQgT0YgSEVBREVSIC0tPgo8cmVjdCBzdHlsZT0nb3BhY2l0eToxLjA7ZmlsbDojRkZGRkZGO3N0cm9rZTpub25lJyB3aWR0aD0nMzAwLjAnIGhlaWdodD0nMzAwLjAnIHg9JzAuMCcgeT0nMC4wJz4gPC9yZWN0Pgo8dGV4dCB4PScxMzguMCcgeT0nMTcwLjAnIGNsYXNzPSdhdG9tLTAnIHN0eWxlPSdmb250LXNpemU6NDBweDtmb250LXN0eWxlOm5vcm1hbDtmb250LXdlaWdodDpub3JtYWw7ZmlsbC1vcGFjaXR5OjE7c3Ryb2tlOm5vbmU7Zm9udC1mYW1pbHk6c2Fucy1zZXJpZjt0ZXh0LWFuY2hvcjpzdGFydDtmaWxsOiMzQjQxNDMnID5OPC90ZXh0Pgo8dGV4dCB4PScxNjUuNicgeT0nMTcwLjAnIGNsYXNzPSdhdG9tLTAnIHN0eWxlPSdmb250LXNpemU6NDBweDtmb250LXN0eWxlOm5vcm1hbDtmb250LXdlaWdodDpub3JtYWw7ZmlsbC1vcGFjaXR5OjE7c3Ryb2tlOm5vbmU7Zm9udC1mYW1pbHk6c2Fucy1zZXJpZjt0ZXh0LWFuY2hvcjpzdGFydDtmaWxsOiMzQjQxNDMnID5pPC90ZXh0Pgo8L3N2Zz4K data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0nMS4wJyBlbmNvZGluZz0naXNvLTg4NTktMSc/Pgo8c3ZnIHZlcnNpb249JzEuMScgYmFzZVByb2ZpbGU9J2Z1bGwnCiAgICAgICAgICAgICAgeG1sbnM9J2h0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnJwogICAgICAgICAgICAgICAgICAgICAgeG1sbnM6cmRraXQ9J2h0dHA6Ly93d3cucmRraXQub3JnL3htbCcKICAgICAgICAgICAgICAgICAgICAgIHhtbG5zOnhsaW5rPSdodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rJwogICAgICAgICAgICAgICAgICB4bWw6c3BhY2U9J3ByZXNlcnZlJwp3aWR0aD0nODVweCcgaGVpZ2h0PSc4NXB4JyB2aWV3Qm94PScwIDAgODUgODUnPgo8IS0tIEVORCBPRiBIRUFERVIgLS0+CjxyZWN0IHN0eWxlPSdvcGFjaXR5OjEuMDtmaWxsOiNGRkZGRkY7c3Ryb2tlOm5vbmUnIHdpZHRoPSc4NS4wJyBoZWlnaHQ9Jzg1LjAnIHg9JzAuMCcgeT0nMC4wJz4gPC9yZWN0Pgo8dGV4dCB4PSczNS4wJyB5PSc1My42JyBjbGFzcz0nYXRvbS0wJyBzdHlsZT0nZm9udC1zaXplOjIzcHg7Zm9udC1zdHlsZTpub3JtYWw7Zm9udC13ZWlnaHQ6bm9ybWFsO2ZpbGwtb3BhY2l0eToxO3N0cm9rZTpub25lO2ZvbnQtZmFtaWx5OnNhbnMtc2VyaWY7dGV4dC1hbmNob3I6c3RhcnQ7ZmlsbDojM0I0MTQzJyA+TjwvdGV4dD4KPHRleHQgeD0nNTEuMCcgeT0nNTMuNicgY2xhc3M9J2F0b20tMCcgc3R5bGU9J2ZvbnQtc2l6ZToyM3B4O2ZvbnQtc3R5bGU6bm9ybWFsO2ZvbnQtd2VpZ2h0Om5vcm1hbDtmaWxsLW9wYWNpdHk6MTtzdHJva2U6bm9uZTtmb250LWZhbWlseTpzYW5zLXNlcmlmO3RleHQtYW5jaG9yOnN0YXJ0O2ZpbGw6IzNCNDE0MycgPmk8L3RleHQ+Cjwvc3ZnPgo= [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound 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[Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound 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[Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000011888 foil Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004698 Polyethylene (PE) Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate Chemical compound 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[O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N ethyl urethane Chemical compound 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Images
Classifications
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- H—ELECTRICITY
- H01—BASIC 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
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
-
- H—ELECTRICITY
- H01—BASIC 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—BASIC 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
-
- H01M2/0275—
-
- H01M2/1016—
-
- 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
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- Y02E60/12—
Abstract
Description
본 발명은 파우치형 이차전지에 관한 것으로서, 구체적으로는 저항을 감소시킬 수 있고, 리드부의 발열을 억제할 수 있는 파우치형 이차전지에 관한 것이다.The present invention relates to a pouch type secondary battery, and more particularly, to a pouch type secondary battery capable of reducing a resistance and suppressing heat generation of a lead portion.
모바일 기기에 대한 기술 개발과 수요가 증가함에 따라 에너지원으로서의 전지의 수요가 급격히 증가하고 있고, 그에 따라 다양한 요구에 부응할 수 있는 전지에 대한 많은 연구가 행해지고 있다.As technology development and demand for mobile devices are increasing, the demand for batteries as energy sources is rapidly increasing, and accordingly, a lot of researches on batteries capable of meeting various demands have been conducted.
대표적으로 전지는 얇은 두께로 휴대폰 등과 같은 제품들에 적용될 수 있는 캔형 이차전지와 파우치형 이차전지를 사용한다.Typically, the battery uses a can-type secondary battery and a pouch-type secondary battery which can be applied to products such as mobile phones with a small thickness.
또한, 일반적인 이차전지는 양극판, 음극판 및 분리막 구조의 전극조립체가 어떠한 구조로 이루어져 있는지에 따라 분류되기도 하는 바, 대표적으로는, 긴 시트형의 양극들과 음극들을 분리막이 개재된 상태에서 권취한 구조의 젤리-롤(권취형) 전극조립체, 소정 크기의 단위로 절취한 다수의 양극과 음극들을 분리막을 개재한 상태로 순차적으로 적층한 스택형(적층형) 전극조립체, 소정 단위의 양극과 음극들을 분리막을 개재한 상태로 적층한 바이셀(Bi-cell) 또는 풀셀(Full cell)들을 권취한 구조의 스택/폴딩형 전극조립체 등을 들 수 있다.In addition, a typical secondary battery is classified according to the structure of the positive electrode plate, the negative electrode plate, and the electrode assembly having the separator structure. Typically, a structure in which a long sheet-like positive electrode and negative electrodes are wound with the separator interposed therebetween (Stacked) electrode assembly in which a plurality of positive electrodes and negative electrodes cut in units of a predetermined size are sequentially stacked with a separator interposed therebetween, a stacked (stacked) electrode assembly in which a predetermined unit of positive and negative electrodes are stacked, A stack / folding type electrode assembly having a structure in which a bi-cell or a full cell stacked in an interposed state is wound.
파우치형 이차전지의 경우, 파우치형 케이스, 전극조립체, 전극 탭 및 전극 리드를 포함하며, 전극리드가 형성된 부위에서 발열이 일어나므로, 파우치형 케이스의 접착부위에서 접착력의 열화에 의한 벤트 현상이 발생하는 등의 문제가 있다.In the case of a pouch type secondary battery, a pouch type case, an electrode assembly, an electrode tab, and an electrode lead are included, and heat is generated at a site where the electrode leads are formed. And the like.
따라서, 본 발명은 상기와 같은 문제점을 해결하기 위해 안출된 것으로서, 전극리드의 저항 및 발열을 감소시킬 수 있으며, 구조적 안정성이 우수한 파우치형 이차전지를 제공하는 것이다.SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a pouch type secondary battery which can reduce the resistance and heat generation of the electrode leads and is excellent in structural stability.
상기 과제를 해결하기 위하여, 본 발명의 일 측면에 따르면, 수납부가 형성되고 상기 수납부의 테두리가 실링된 형태로 구성된 파우치형 케이스, 상기 파우치형 케이스의 수납부에 구비되는 전극조립체, 및 일단이 상기 전극조립체와 연결되고 타단이 상기 파우치형 케이스의 외부로 돌출 형성된 전극단자를 포함하고, 상기 파우치형 케이스는, 상기 전극단자가 형성되는 테두리와 상기 수납부 사이에 테라스부를 구비하며, 상기 테라스부의 적어도 일면에 냉각부재를 포함하는 파우치형 이차전지가 제공된다.According to an aspect of the present invention, there is provided a pouch type case having a housing part formed in a shape in which a rim of the housing part is sealed, an electrode assembly provided in the housing part of the pouch type case, And an electrode terminal connected to the electrode assembly and having the other end protruded to the outside of the pouch type case, wherein the pouch type case has a terrace portion between a rim on which the electrode terminal is formed and the receiving portion, There is provided a pouch-type secondary battery including a cooling member on at least one surface thereof.
바람직하게는, 상기 냉각부재는 열전도성 접착제에 의해 상기 테라스부에 부착될 수 있다.Preferably, the cooling member may be attached to the terrace portion by a thermally conductive adhesive.
바람직하게는, 상기 냉각부재는 상기 테라스부의 외측으로 돌출되게 형성될 수 있다.Preferably, the cooling member may be formed to protrude to the outside of the terrace portion.
바람직하게는, 상기 냉각 부재는, 열전도성 소재로 이루어질 수 있다.Preferably, the cooling member may be made of a thermally conductive material.
바람직하게는, 상기 냉각부재는, 1 mm 내지 50 mm의 두께를 가질 수 있다.Preferably, the cooling member may have a thickness of 1 mm to 50 mm.
바람직하게는, 상기 냉각부재는, 복수의 방열핀을 구비할 수 있다.Preferably, the cooling member may include a plurality of radiating fins.
바람직하게는, 상기 냉각부재는 적어도 하나의 개구부가 형성된 것일 수 있다.Preferably, the cooling member may be formed with at least one opening.
또한, 본 발명의 일 측면에 따르면, 상술한 파우치형 이차전지를 단위셀로 포함하는 전지모듈이 제공된다.According to an aspect of the present invention, there is provided a battery module including the above-described pouch-type secondary battery as a unit cell.
본 발명의 일 실시예에 따르면, 전극리드의 저항 및 발열을 감소시킬 수 있으며, 종래의 이차전지와 비교하여, 전극리드가 차지하는 폭을 감소시킬 수 있다.According to an embodiment of the present invention, resistance and heat generation of the electrode leads can be reduced, and the width occupied by the electrode leads can be reduced as compared with the conventional secondary batteries.
또한, 이차전지 간의 연결부의 내구성을 향상시켜, 외부 충격에 대한 연결부의 변형을 최소화시킬 수 있다.Further, the durability of the connection portion between the secondary batteries can be improved, and the deformation of the connection portion against the external impact can be minimized.
본 명세서에 첨부되는 다음의 도면은 본 발명의 바람직한 실시예를 예시하는 것이며, 전술한 발명의 내용과 함께 본 발명의 기술사상을 더욱 이해시키는 역할을 하는 것이므로, 본 발명은 그러한 도면에 기재된 사항에만 한정되어 해석되어서는 아니 된다.
도 1a은 종래의 파우치형 이차전지를 나타내는 상면도이다.
도 1b는 종래의 이차전지의 측면도이다.
도 2a 및 도 2b는 본 발명의 일 실시예에 따른 파우치형 이차전지를 나타내는 상면도이다.
도 3a 및 도 3b는 본 발명의 일 실시예에 따른 파우치형 이차전지의 측면도이다.
도 4 내지 도 6은 본 발명의 다양한 실시예에 따른 파우치형 이차전지의 측면도들이다.BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and together with the description of the invention serve to further the understanding of the technical idea of the invention, It should not be construed as limited.
1A is a top view of a conventional pouch-type secondary battery.
1B is a side view of a conventional secondary battery.
2A and 2B are top views illustrating a pouch type secondary battery according to an embodiment of the present invention.
3A and 3B are side views of a pouch type secondary battery according to an embodiment of the present invention.
4 to 6 are side views of a pouch type secondary battery according to various embodiments of the present invention.
이하, 본 발명을 도면을 참조하여 상세히 설명하기로 한다. 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니 되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.Hereinafter, the present invention will be described in detail with reference to the drawings. The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.
따라서, 본 명세서에 기재된 실시예와 도면에 기재된 구성은 본 발명의 가장 바람직한 일 실시예에 불과할 뿐이고, 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.Therefore, the embodiments described in the present specification and the constitutions described in the drawings are merely the most preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.
도 1a은 종래의 파우치형 이차전지를 나타내는 상면도이며, 도 1b는 종래의 따른 파우치형 이차전지의 측면도이다. 도 1a 및 1b를 참조하면, 종래의 파우치형 이차전지는, 수납부가 형성되고 상기 수납부의 테두리가 실링된 형태로 구성된 파우치형 케이스(200), 상기 파우치형 케이스(200)의 수납부에 구비되는 전극조립체(100), 및 일단이 상기 전극조립체(100)와 연결되고 타단이 상기 파우치형 케이스(200)의 외부로 돌출 형성된 전극리드(110)를 포함한다. 이 경우, 전극리드가 형성된 부위에서 발열이 일어나므로, 파우치형 케이스의 접착부위에서 접착력의 열화에 의한 벤트 현상이 발생하는 등의 문제가 있다.FIG. 1A is a top view showing a conventional pouch type secondary battery, and FIG. 1B is a side view of a conventional pouch type secondary battery. 1A and 1B, a conventional pouch-type secondary battery includes a pouch-type case 200 having a storage part formed in a shape that the rim of the storage part is sealed, And an electrode lead 110 having one end connected to the electrode assembly 100 and the other end protruding to the outside of the pouch case 200. In this case, since heat is generated at the portion where the electrode lead is formed, there is a problem that a vent phenomenon occurs due to deterioration of the adhesive force on the bonding portion of the pouch type case.
따라서, 본 발명에 일 실시예에 따른 파우치형 이차전지는, 수납부가 형성되고 상기 수납부의 테두리가 실링된 형태로 구성된 파우치형 케이스(200), 상기 파우치형 케이스(200)의 수납부에 구비되는 전극조립체(100), 및 일단이 상기 전극조립체(100)와 연결되고 타단이 상기 파우치형 케이스(200)의 외부로 돌출 형성된 전극리드(110)를 포함하고, 상기 파우치형 케이스(200)는, 상기 전극리드(110)가 형성되는 테두리와 상기 수납부 사이에 테라스부(210)를 구비하며, 상기 테라스부(210)의 적어도 일면에 냉각부재를 포함한다.Accordingly, the pouch type secondary battery according to an embodiment of the present invention includes a pouch type case 200 having a storage part formed by sealing a rim of the storage part, And an electrode lead 110 having one end connected to the electrode assembly 100 and the other end protruding to the outside of the pouch case 200. The pouch type case 200 includes an electrode assembly 100, And a terrace part 210 between the rim where the electrode lead 110 is formed and the receiving part. The cooling part is provided on at least one surface of the terrace part 210.
파우치형 케이스(200)는 상부 파우치와 하부 파우치로 형성될 수 있으며, 내부에 빈 공간을 가져, 이러한 내부 공간에 전극조립체를 수납하도록 형성될 수 있다. 이때, 파우치형 케이스(200)는 각각의 테두리에 실링부를 구비하여, 전극조립체, 전극탭 및 전해액 등을 수납한 후, 상부 파우치와 하부 파우치의 실링부가 서로 접착된다. 또한, 파우치 외장재는 육면체 또는 각형 형상으로 형성될 수 있으나, 본 발명에서 파우치 외장재의 형상을 특정 형상으로 한정하는 것은 아니다.The pouch-shaped case 200 may be formed of an upper pouch and a lower pouch, and may have an empty space therein to accommodate the electrode assembly in the inner space. At this time, the pouch-shaped case 200 has a sealing portion at each rim, and after the electrode assembly, the electrode tab, and the electrolyte solution are received, the sealing portions of the upper pouch and the lower pouch are bonded to each other. In addition, although the pouch exterior member may be formed in a hexahedron or angular shape, the shape of the pouch exterior member is not limited to a specific shape in the present invention.
테라스부(210)는 상기 파우치형 케이스(200)에서 전극리드가 형성되는 부분을 의미하며, 도 1b에 도시된 바와 같이, 전극리드가 돌출 형성되는 실링부와 전극탭(120)이 형성되는 경사면을 포함한다.1B, a pair of electrode tabs 120 and a pair of electrode tabs 120 are formed on the upper and lower surfaces of the pouch case 200, .
도 2a 및 도 2b는 본 발명의 일 실시예에 따른 파우치형 이차전지를 나타내는 상면도이다. 도 2a를 참조하면, 테라스부(210)의 일면에 냉각부재(300)를 포함하며, 도 2b를 참조하면 냉각부재(300)는 테라스부(210)의 외측으로 돌출되게 형성될 수 있다.2A and 2B are top views illustrating a pouch type secondary battery according to an embodiment of the present invention. Referring to FIG. 2A, a cooling member 300 is provided on one side of the terrace portion 210, and the cooling member 300 may protrude to the outside of the terrace portion 210 with reference to FIG. 2B.
도 3a 및 도 3b는 본 발명의 일 실시예에 따른 파우치형 이차전지의 측면도이다. 도 3a 및 도 3b를 참조하면, 냉각부재(300)는 파우치형 케이스(200)의 형상에 따라 테라스부(210)의 일면 또는 양면에 형성될 수 있다.3A and 3B are side views of a pouch type secondary battery according to an embodiment of the present invention. 3A and 3B, the cooling member 300 may be formed on one side or both sides of the terrace 210 according to the shape of the pouch-type case 200.
도 4 내지 도 6은 본 발명의 다양한 실시예에 따른 파우치형 이차전지의 측면도들이다.4 to 6 are side views of a pouch type secondary battery according to various embodiments of the present invention.
도 4를 참조하면, 냉각부재(300)는 전극리드(110)가 형성되는 파우치형 케이스(200)의 실링부와, 전극탭이 위치한 경사면에 인접하도록 형성될 수 있다.4, the cooling member 300 may be formed so as to be adjacent to the sealing portion of the pouch-type case 200 in which the electrode leads 110 are formed, and the inclined surface on which the electrode tabs are located.
도 5를 참조하면, 냉각부재(300)는 열전도성 접착제(400)에 의해 상기 테라스부(210)에 부착될 수 있다. 상기 열전도성 접착제(400)는 열을 서로 용이하게 전달할 수 있는 소재라면 특별히 제한되지 않으며, 에폭시, 실리콘, 우레탄, 아크릴레이트 등의 고분자 수지와 상기 고분자 수지에 산화알루미늄, 질화붕소, 산화아연, 질화알루미늄, 탄소계 물질, 은, 구리 등의 입자가 분산된 소재를 사용할 수 있다.Referring to FIG. 5, the cooling member 300 may be attached to the terrace portion 210 by a thermally conductive adhesive 400. The thermally conductive adhesive 400 is not particularly limited as long as it is a material capable of easily transferring heat to each other. The thermally conductive adhesive 400 may be formed of a polymer resin such as epoxy, silicone, urethane, acrylate, Aluminum, carbon-based material, silver, copper, or the like may be used.
도 6을 참조하면, 냉각부재(300)는 복수의 방열핀을 구비할 수 있다. Referring to FIG. 6, the cooling member 300 may include a plurality of radiating fins.
또한, 본 발명의 파우치형 이차전지에 포함되는 냉각부재는 열전도성 소재로 이루어질 수 있으며, 1 mm 내지 50 mm의 두께를 가질 수 있다.In addition, the cooling member included in the pouch type secondary battery of the present invention may be made of a thermally conductive material and may have a thickness of 1 mm to 50 mm.
또한, 상기 냉각부재는 적어도 하나의 개구부가 형성될 수 있다.Also, the cooling member may be formed with at least one opening.
전극조립체(100)는 파우치형 케이스(200)의 내부에 수용되며, 양극, 음극 및 분리막을 포함한다. 전극조립체(100)는 분리막이 개재된 상태에서 양극과 음극이 순차적으로 적층 되어 서로 절연된 상태로 구성될 수 있다. 전극조립체(100)는 실시형태에 따라 권취형, 스택형 또는 스택/폴딩형 등으로 다양한 구조로 형성될 수 있다. The electrode assembly 100 is housed inside the pouch case 200 and includes an anode, a cathode, and a separator. The electrode assembly 100 may be configured such that the anode and the cathode are sequentially stacked and insulated from each other with the separator interposed therebetween. The electrode assembly 100 may have various structures such as a winding type, a stack type, or a stack / folding type according to the embodiment.
상기 양극은 도전성이 우수한 금속 박판, 예를 들면 알루미늄(Al) 호일(foil)로 이루어진 양극 집전체와 그 양면에 코팅된 양극 활물질층을 포함하여 형성된다. 양극은 양 면에 양극 활물질층이 형성되지 않은 양극 집전체 영역, 즉 양극 무지부가 형성될 수 있다. 그리고, 양극은 양극 무지부의 일측단에 금속 재질 이를 테면 알루미늄(Al) 재질로 형성되는 양극탭이 접합될 수 있다.The positive electrode includes a positive electrode current collector made of a thin metal plate having excellent conductivity, for example, aluminum foil, and a positive electrode active material layer coated on both surfaces thereof. The positive electrode may be formed with a positive electrode current collector region, that is, a positive electrode uncoated portion, on both sides of which a positive electrode active material layer is not formed. The positive electrode may be bonded to one end of the positive electrode uncoated portion with a metallic material such as a positive electrode tab made of aluminum (Al).
상기 음극은 전도성 금속 박판, 예를 들면 구리(Cu) 호일로 이루어진 음극 집전체와, 그 양면에 코팅된 음극 활물질층을 포함하고 있다. 음극은 양 측부에 음극 활물질층이 형성되지 않은 음극 집전체 영역, 즉 음극 무지부가 형성된다. 그리고, 음극은 일측단에 금속 재질, 이를테면 니켈(Ni) 재질로 형성되는 음극탭이 접합될 수 있다.The negative electrode includes a negative electrode collector made of a conductive metal thin plate, for example, a copper (Cu) foil, and a negative electrode active material layer coated on both surfaces thereof. The negative electrode is formed with negative electrode current collecting areas, i.e., negative electrode uncoated areas, on both sides of which a negative active material layer is not formed. The negative electrode may be bonded to one end of a negative electrode tab made of a metal material such as nickel (Ni).
상기 분리막은 양극과 음극 사이에 위치하여, 양극과 음극을 서로 전기적으로 절연시키며, 양극과 음극 사이에서 리튬 이온 등이 서로 통과할 수 있도록 다공성막 형태로 형성될 수 있다. 이러한 분리막은, 예를 들어 폴리에틸렌(PE) 또는 폴리프로필렌(PP) 또는 이들의 복합필름을 사용한 다공성막으로 이루어질 수 있다.The separator may be disposed between the anode and the cathode to electrically insulate the anode and the cathode from each other and may be formed in the form of a porous film so that lithium ions can pass between the anode and the cathode. Such a separation membrane may be made of, for example, a porous membrane using polyethylene (PE) or polypropylene (PP) or a composite film thereof.
전극탭(120)은 전극조립체로(100)부터 연장된다. 이러한 전극탭(120)은 외부 단자 또는 장치와의 전기적 연결 등을 위하여, 전극탭의 일부가 전극리드(110)에 연결될 수 있다.The electrode tabs 120 extend from the electrode assembly 100. The electrode tab 120 may be partially connected to the electrode lead 110 for electrical connection with external terminals or devices.
전극리드(110)는 양극 리드 또는 음극 리드일 수 있으며 각각 독립적으로 0.05 내지 1 mm의 두께를 가질 수 있다. 또한, 상기 양극 리드는 알루미늄 재질의 도전성 부재를 사용할 수 있으며, 상기 음극 리드는 구리 재질 또는 니켈이 코팅된 구리 재질의 부재를 사용할 수 있다.The electrode lead 110 may be a positive electrode lead or a negative electrode lead, and may independently have a thickness of 0.05 to 1 mm. The cathode lead may be made of an aluminum conductive material, and the anode lead may be made of a copper material or a nickel-coated copper material.
또한, 본 발명의 일 실시예에 따르면, 상술한 파우치형 이차전지를 단위셀로 포함하는 전지모듈이 제공된다.Also, according to an embodiment of the present invention, there is provided a battery module including the above-described pouch-type secondary battery as a unit cell.
이상 첨부된 도면을 참조하여 본 발명의 실시예들을 설명하였으나, 본 발명은 상기 실시예들에 한정되는 것이 아니라 서로 다른 다양한 형태로 변형될 수 있으며, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자는 본 발명의 기술적 사상이나 필수적인 특징을 변경하지 않고서 다른 구체적인 형태로 실시될 수 있다는 것을 이해할 수 있을 것이다. 그러므로 이상에서 기술한 실시예들은 모든 면에서 예시적인 것이며 한정적이 아닌 것으로 이해해야만 한다.While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is to be understood that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.
100: 전극조립체
110: 전극리드
120: 전극탭
200: 파우치형 케이스
210: 테라스부
300: 냉각부재
400: 열전도성 접착제100: electrode assembly
110: electrode lead
120: Electrode tab
200: Pouch type case
210: Terrace
300: cooling member
400: thermally conductive adhesive
Claims (8)
상기 파우치형 케이스는, 상기 전극단자가 형성되는 테두리와 상기 수납부 사이에 테라스부를 구비하며, 상기 테라스부의 적어도 일면에 냉각부재를 포함하는 파우치형 이차전지.A pouch type case having a housing part formed in a shape that the rim of the housing part is sealed, an electrode assembly provided in the housing part of the pouch type case, one end connected to the electrode assembly and the other end connected to the outside of the pouch- And a protruding electrode terminal,
Wherein the pouch-shaped case has a terrace portion between an edge where the electrode terminal is formed and the receiving portion, and a cooling member is provided on at least one surface of the terrace portion.
상기 냉각부재는 열전도성 접착제에 의해 상기 테라스부에 부착되는 것을 특징으로 하는 파우치형 이차전지.The method according to claim 1,
Wherein the cooling member is attached to the terrace portion by a thermally conductive adhesive.
상기 냉각부재는 상기 테라스부의 외측으로 돌출되게 형성되는 것을 특징으로 하는 파우치형 이차전지.The method according to claim 1,
Wherein the cooling member is formed to protrude to the outside of the terrace portion.
상기 냉각 부재는 열전도성 소재로 이루어진 것을 특징으로 하는 파우치형 이차전지.The method according to claim 1,
Wherein the cooling member is made of a thermally conductive material.
상기 냉각부재는 1 mm 내지 50 mm의 두께를 갖는 것을 특징으로 하는 파우치형 이차전지.The method according to claim 1,
Wherein the cooling member has a thickness of 1 mm to 50 mm.
상기 냉각부재는 복수의 방열핀을 구비하는 것을 특징으로 하는 파우치형 이차전지.The method according to claim 1,
Wherein the cooling member includes a plurality of radiating fins.
상기 냉각부재는 적어도 하나의 개구부가 형성된 것을 특징으로 하는 파우치형 이차전지.The method according to claim 1,
Wherein the cooling member is formed with at least one opening.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150151977A KR20170050445A (en) | 2015-10-30 | 2015-10-30 | Pouch type secondary battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150151977A KR20170050445A (en) | 2015-10-30 | 2015-10-30 | Pouch type secondary battery |
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| Publication Number | Publication Date |
|---|---|
| KR20170050445A true KR20170050445A (en) | 2017-05-11 |
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|---|---|---|---|
| KR1020150151977A KR20170050445A (en) | 2015-10-30 | 2015-10-30 | Pouch type secondary battery |
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| Country | Link |
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| KR (1) | KR20170050445A (en) |
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2015
- 2015-10-30 KR KR1020150151977A patent/KR20170050445A/en unknown
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