KR20080042965A - Battery module with compact structure and excellent heat radiation property - Google Patents

Battery module with compact structure and excellent heat radiation property Download PDF

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KR20080042965A
KR20080042965A KR1020060111355A KR20060111355A KR20080042965A KR 20080042965 A KR20080042965 A KR 20080042965A KR 1020060111355 A KR1020060111355 A KR 1020060111355A KR 20060111355 A KR20060111355 A KR 20060111355A KR 20080042965 A KR20080042965 A KR 20080042965A
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battery
heat
battery module
conductive member
battery cell
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KR1020060111355A
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Korean (ko)
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KR101067627B1 (en
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장민철
신용식
김지호
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주식회사 엘지화학
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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
    • H01M10/65—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—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
    • H01M10/653—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
    • 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 of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • 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 of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/121—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
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/124—Primary casings, jackets or wrappings of a single cell or a single battery 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • 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

Abstract

A battery module is provided to prevent a deterioration of battery cells by radiating internal heat generated when battery cells are discharged, thereby improving a life of the battery module. A battery module is a large-capacity battery module obtained by laminating two or more plate-like battery cells(100) in order. In the laminate, the battery cells are bonded to each other by a pair of double-faced adhesive tapes(200) interposed between the battery cells. A thermoconductive member(300) is placed between the double-faced adhesive taps. A thermoconductive member having high thermoconductivity is interposed between at least one pair of battery cells. A heat-radiating member(350) is placed at one side of the battery cell laminate. The thermoconductive member is connected to the heat-radiating member.

Description

콤팩트한 구조와 우수한 방열 특성의 전지모듈 {Battery Module with Compact Structure and Excellent Heat Radiation Property}Battery Module with Compact Structure and Excellent Heat Radiation Property {Battery Module with Compact Structure and Excellent Heat Radiation Property}

도 1은 본 발명의 하나의 실시예에 따른 전지셀 표면에 양면 접착 테이프와 열전도 부재가 위치하고, 열전도 부재와 방열 부재가 연결된 형상에 대한 모식도이다;1 is a schematic diagram of a shape in which a double-sided adhesive tape and a heat conductive member are positioned on a surface of a battery cell according to an embodiment of the present invention, and a heat conductive member and a heat dissipation member are connected to each other;

도 2는 도 1의 측면 모식도이다;FIG. 2 is a schematic side view of FIG. 1; FIG.

도 3은 도 2의 전지모듈 구조에서 다수의 전지셀이 적층되어 있는 구조에 대한 측면 모식도이다; 3 is a schematic side view of a structure in which a plurality of battery cells are stacked in the battery module structure of FIG. 2;

도 4는 본 발명의 또 다른 하나의 실시예에 따른 전지셀 사이의 열전도 부재와 방열 부재의 연결 분해도이다;4 is a connection exploded view of a heat conduction member and a heat dissipation member between battery cells according to another embodiment of the present invention;

도 5는 도 4의 전지셀들을 적층하고 열전도 부재와 방열부재를 전지셀들 사이에 개재한 전지모듈의 구성도이다.FIG. 5 is a configuration diagram of a battery module in which the battery cells of FIG. 4 are stacked and a heat conductive member and a heat radiating member are interposed between the battery cells.

본 발명은 콤팩트한 구조와 우수한 방열 특성의 전지모듈에 관한 것으로, 더욱 상세하게는 둘 또는 그 이상의 판상형 전지셀들이 순차적으로 적층되어 있는 중대형 전지모듈로서, 상기 전지셀의 적층체는 전지셀들 사이에 부가된 1 쌍의 양면 접착 테이프에 의해 결합되어 있고, 상기 양면 접착 테이프들 사이에 열전도 부재가 위치하며, 적어도 한 쌍의 전지셀들 사이에는 높은 열전도성의 부재('열전도 부재')가 개재되어 있고, 전지셀 적층체의 일측에는 방열을 위한 부재('방열 부재')가 위치하며, 상기 열전도 부재는 방열 부재에 연결되어 있는 것으로 구조로 이루어진 전지모듈에 관한 것이다. The present invention relates to a battery module having a compact structure and excellent heat dissipation characteristics, and more particularly to a medium-large battery module in which two or more plate-shaped battery cells are sequentially stacked, wherein the stack of battery cells is disposed between battery cells. It is bonded by a pair of double-sided adhesive tape added to, the heat conductive member is located between the double-sided adhesive tape, a high thermal conductive member ('heat conductive member') is interposed between the at least one pair of battery cells. One side of the battery cell stack includes a member for dissipating heat ('heat dissipation member'), and the heat conductive member is connected to the heat dissipation member, and relates to a battery module having a structure.

최근, 충방전이 가능한 이차전지는 와이어리스 모바일 기기의 에너지원으로 광범위하게 사용되고 있다. 또한, 이차전지는, 화석 연료를 사용하는 기존의 가솔린 차량, 디젤 차량 등의 대기오염 등을 해결하기 위한 방안으로 제시되고 있는 전기자동차, 하이브리드 전기자동차 등의 에너지원으로서도 주목받고 있다. 따라서, 이차전지를 사용하는 에플리케이션의 종류는 이차전지의 장점으로 인해 매우 다양화되어 가고 있으며, 향후에는 지금보다는 많은 분야와 제품들에 이차전지가 적용될 것으로 예상된다.Recently, secondary batteries capable of charging and discharging have been widely used as energy sources of wireless mobile devices. In addition, the secondary battery has attracted attention as an energy source of electric vehicles, hybrid electric vehicles, etc. which are proposed as a solution for air pollution of conventional gasoline and diesel vehicles using fossil fuel. Therefore, the type of applications using the secondary battery is 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.

이와 같이 이차전지의 적용 분야와 제품들이 다양화됨에 따라, 전지의 종류 또한 그에 알맞은 출력과 용량을 제공할 수 있도록 다양화되고 있다. 더불어, 당해 분야 및 제품들에 적용되는 전지들은 소형 경량화가 강력히 요구되고 있다.As the application fields and products of secondary batteries are diversified as described above, the types of batteries are also diversified to provide outputs and capacities suitable for them. In addition, batteries applied to the art and products are strongly required for small size and light weight.

예를 들어, 휴대폰, PDA, 디지털 카메라, 노트북 컴퓨터 등과 같은 소형 모바일 기기들은 해당 제품들의 소형 경박화 경향에 따라 그에 상응하도록 디바이스 1 대당 하나 또는 두서너 개의 소형 경량의 전지 셀들이 사용되고 있다. 반면에, 전기자동차, 하이브리드 전기자동차 등과 같은 중대형 디바이스들은 고출력 대용량의 필요성으로 인해, 다수의 전지 셀을 전기적으로 연결한 전지모듈(또는 "전지팩"으로 칭하기도 함)이 사용되고 있는데, 전지모듈의 크기와 중량은 당해 중대형 디바이스 등의 수용 공간 및 출력 등에 직접적인 관련성이 있으므로, 제조업체들은 가능한 한 소형이면서 경량의 전지모듈을 제조하려고 노력하고 있다. For example, 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. On the other hand, medium and large devices such as electric vehicles and hybrid electric vehicles, due to the need for high output capacity, a battery module (or sometimes referred to as a "battery pack") electrically connecting a plurality of battery cells is used. Since size and weight are directly related to the accommodation space and output of the medium and large devices, manufacturers are trying to manufacture battery modules that are as small and lightweight as possible.

한편, 이차전지와 그것을 다수 개 포함하고 있는 전지모듈에서 가장 문제되고 있는 사항들 중의 하나는 안전성이다. 특히, 고출력 대용량의 전지모듈은 전기자전거, 전기자동차 등과 같은 대형 디바이스에 사용되므로, 외부로부터 충격, 갖은 진동 등 다양하고 큰 외력을 받게 된다. 더욱이, 전지모듈을 구성하는 단위전지로서의 사용 가능성에 대해 최근 많은 관심과 연구의 대상이 되고 있는 리튬 이차전지는 안전성이 낮다는 문제점을 가지고 있다. 따라서, 다수의 단위전지들이 밀집되어 있는 전지모듈의 안전성 문제는 더욱 심각할 수 있다.On the other hand, one of the most problematic items in a secondary battery and a battery module including a plurality thereof is safety. In particular, since the high-output large-capacity battery module is used in large devices such as electric bicycles and electric vehicles, it receives various external forces such as shocks and vibrations from the outside. In addition, the lithium secondary battery, which has recently been the subject of much interest and research on the possibility of being used as a unit cell constituting the battery module, has a problem of low safety. Therefore, the safety problem of a battery module in which a plurality of unit cells are concentrated may be more serious.

전지모듈의 안전성 문제는 발열, 외부 충격 등에 의한 모듈 구성요소들의 열화 및 내부 단락 등으로 유발된다. The safety problem of the battery module is caused by deterioration and internal short circuit of module components due to heat generation, external shock, and the like.

또한, 다양한 범위의 전압 및 전류 범위를 갖는 어플리케이션 또는 디바이스의 등장으로 고전압, 고전류의 전지모듈이 요구가 급격히 증가되고 있으며, 이를 실현하기 위해서는 전지셀들을 전기적으로 연결해야 한다. 일반적으로, 전기적으로 연결한 전지모듈은 동일한 전압의 전지셀들로 구성되는 것이 성능 구현에 유리하고, 전기적 연결의 전지모듈을 조립시 가장 유리한 구조는 전지셀들을 하나씩 적 층하는 적층식 구조이다.In addition, with the advent of applications or devices having a wide range of voltage and current ranges, the demand for battery modules of high voltage and high current is rapidly increasing, and to realize this, the battery cells must be electrically connected. In general, the electrically connected battery module is composed of the battery cells of the same voltage is advantageous to the implementation of the performance, the most advantageous structure when assembling the battery module of the electrical connection is a stacked structure in which the battery cells are laminated one by one.

따라서, 다수의 판상형 전지셀들을 적층하여 전기적 연결을 이루는 전지팩은 높은 충적도로 전지셀들이 적층될 수 있다는 장점을 가지지만, 전지셀 상호간에 많은 부위가 접촉되어 있거나 근접해 있음으로 인해, 충방전시 전지셀에서 발생하는 열을 제거하는 것이 용이하지 않다는 단점이 있다.Therefore, a battery pack that is electrically stacked by stacking a plurality of plate-shaped battery cells has the advantage that the battery cells can be stacked with high charge, but due to the fact that many parts are in contact with or close to each other, There is a disadvantage that it is not easy to remove the heat generated in the battery cell.

또한, 전지셀 적층체 중간에 위치하는 전지셀의 경우, 방열이 제대로 이루어지지 않을 때, 외곽 전지셀에 비해 열화가 빨라지면서 수명이 짧아지므로 안전성 측면에서도 바람직하지 못하며, 이러한, 전지셀들의 균일하지 못한 열화 속도는 전체 전지모듈의 수명 저하를 초래하는 문제점이 있다. In addition, in the case of a battery cell positioned in the middle of the battery cell stack, when heat dissipation is not properly performed, the deterioration is faster and the life is shorter than that of the outer battery cell, which is not preferable in terms of safety. The poor deterioration rate has a problem of reducing the life of the entire battery module.

따라서, 고출력 대용량을 제공하면서도 콤팩트한 구조로 제조될 수 있고, 수명이 길며 안전성이 높은 전지모듈에 대한 필요성이 높은 실정이다.Therefore, there is a high need for a battery module that can be manufactured in a compact structure while providing a high output large capacity, and having a long life and high safety.

본 발명은 상기와 같은 종래기술의 문제점과 과거로부터 요청되어온 기술적 과제를 해결하는 것을 목적으로 한다.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.

본 발명의 목적은 전지셀들을 전기적으로 연결하여 전지모듈을 제조시 전지셀들 사이에 열전도성이 높은 열전도 부재를 삽입하고, 이러한 열전도 부재를 외부 방열 부재에 연결하여 전지셀의 방전시 발생하는 내부 온도를 외부로 발열시켜 전지모듈의 전체온도를 균일하게 하여 전지셀 적층체의 중심부에 있는 전지셀의 열화를 방지하여 전지모듈의 수명을 향상시키는 것이다.An object of the present invention is to insert a high thermal conductivity member between the battery cells during the manufacturing of the battery module by electrically connecting the battery cells, the internal heat generated when the discharge of the battery cells by connecting the heat conductive member to the external heat dissipation member By heating the temperature to the outside to uniformize the overall temperature of the battery module to prevent deterioration of the battery cell in the center of the battery cell stack to improve the life of the battery module.

본 발명의 또 다른 목적은 안전성이 우수한 전지셀들이 적층된 전지모듈과 콤팩트한 구조를 가지는 고출력 대용량의 전지모듈을 제공하는 것이다.Still another object of the present invention is to provide a battery module having a high output capacity having a compact structure with a battery module having excellent safety and stacked battery cells.

콤팩트한 구조와 우수한 방열 특성은 대략 보상 관계에 있다. 즉, 콤팩트한 구조에서는 방열 특성의 저하가 불가피한 바, 이들 모두를 이상적으로 실현할 수 있는 전지모듈은 그것의 적용 분야가 증가함에 따라 필요성이 더욱 높아질 것으로 기대된다.The compact structure and excellent heat dissipation properties are approximately compensating. That is, since the deterioration of the heat dissipation characteristic is inevitable in the compact structure, the battery module capable of ideally realizing all of them is expected to increase in demand as its application field increases.

이러한 목적을 달성하기 위한 본 발명에 따른 전지모듈은, 둘 또는 그 이상의 판상형 전지셀들이 순차적으로 적층되어 있는 중대형 전지모듈로서, 상기 전지셀의 적층체는 전지셀들 사이에 부가된 1 쌍의 양면 접착 테이프에 의해 결합되어 있고, 상기 양면 접착 테이프들 사이에 열전도 부재가 위치하며, 적어도 한 쌍의 전지셀들 사이에는 높은 열전도성의 부재('열전도 부재')가 개재되어 있고, 전지셀 적층체의 일측에는 방열을 위한 부재('방열 부재')가 위치하며, 상기 열전도 부재는 방열 부재에 연결되어 있는 것으로 구성되어 있다.The battery module according to the present invention for achieving this object is a medium-large battery module in which two or more plate-shaped battery cells are sequentially stacked, the stack of battery cells is a pair of two sides added between the battery cells Bonded by an adhesive tape, a thermally conductive member is positioned between the double-sided adhesive tapes, and a high thermally conductive member ('thermally conductive member') is interposed between at least one pair of battery cells, On one side, a member for dissipating heat ('heat dissipation member') is located, the heat conducting member is configured to be connected to the heat dissipation member.

즉, 본 발명의 전지모듈은, 높은 집적도의 전지셀 적층체를 구현하면서 충방전 시에 발생하는 전지셀 적층체의 발열을 방지하기 위해, 전지셀들 사이에 열전도성의 부재와 양면 접착 테이프를 위치시키고, 전지셀 적층체 일측에 열전도 부재와 연결되는 방열 부재를 설치함으로써, 카트리지 등 별도의 부재를 사용하지 않고도 효과적으로 높은 집적도의 전지셀 적층체를 구성할 수 있으며, 전지셀에서 발생한 열이 전지셀들 사이에 접촉되어 있는 열전도 부재를 따라 전도되어 방열 부재를 통과하여 전지모듈 외부로 방출됨으로써, 전지셀 적층체의 중간에 위치한 전지셀이 과도하게 가열되는 것을 막고, 적층체의 외곽에 위치한 전지셀의 열화속도와 대략 균일하게 할 수 있다.That is, in the battery module of the present invention, a heat conductive member and a double-sided adhesive tape are disposed between the battery cells in order to prevent heat generation of the battery cell stack generated during charging and discharging while implementing a battery cell stack having a high degree of integration. By installing a heat dissipation member connected to the heat conducting member on one side of the battery cell stack, a battery cell stack having a high degree of integration can be effectively formed without using a separate member such as a cartridge, and the heat generated from the battery cell By conducting along the heat conduction member in contact with each other and passing through the heat dissipation member to be discharged to the outside of the battery module, the battery cell located in the middle of the battery cell stack is prevented from being excessively heated, and the battery cell located at the outside of the stack Can be made approximately equal to the deterioration rate.

또한, 상기 양면 접착 테이프는 전지셀과 전지셀을 단단히 고정시켜서 전지모듈의 진동 등에 의한 외력으로부터 전지셀 적층체의 구조가 어긋나는 것을 방지하고, 양면 접착 테이프 사이에 위치한 열전도 부재의 위치이탈을 방지하는 효과도 제공한다. In addition, the double-sided adhesive tape securely fixes the battery cell and the battery cell to prevent the structure of the battery cell stack from shifting from external force due to vibration of the battery module, and to prevent the thermal conduction member from being positioned between the double-sided adhesive tape. It also provides an effect.

본 발명에서 상기 판상형 전지셀은 충방전이 가능한 전지셀이라면 특별히 제한되는 것은 아니고, 예를 들어, 리튬 이차 전지셀, 니켈-수소(Ni-MH) 전지셀, 니켈-카드뮴(Ni-Cd) 전지셀 등을 들 수 있으며, 그 중에서도 중량 대비 고출력을 제공하는 리튬 이차전지가 특히 바람직하게 사용될 수 있다. 리튬 이차전지는 형태에 따라 원통형 전지, 각형 전지, 파우치형 전지 등으로 구분되는데, 그 중 높은 집적도로 적층될 수 있는 각형 전지셀과 파우치형 전지셀이 바람직하며, 수지층 및 금속층을 포함하는 라미네이트 시트의 전지케이스에 전극조립체가 내장되어 있는 가벼운 중량의 파우치형 전지셀이 특히 바람직하다.In the present invention, the plate-shaped battery cell is not particularly limited as long as it is a battery cell capable of charging and discharging, for example, a lithium secondary battery cell, a nickel-hydrogen (Ni-MH) battery cell, a nickel-cadmium (Ni-Cd) battery A cell etc. can be mentioned, Especially the lithium secondary battery which provides a high output with respect to a weight can be used especially preferably. The lithium secondary battery is classified into a cylindrical battery, a square battery, a pouch-type battery, etc., depending on the shape. Among them, a square battery cell and a pouch-type battery cell, which can be stacked with high integration, are preferable, and a laminate including a resin layer and a metal layer. Particularly preferred is a light weight pouch type battery cell in which an electrode assembly is incorporated in a battery case of a sheet.

일반적으로, 전지셀은 양극단자와 음극단자가 전지셀의 일측에 돌출되어있는 구조와, 양극 단자가 돌출된 대향측에 음극단자가 돌출되는 구조로 나뉜다. 본 발명에 따른 상기 전지셀 적층체는, 바람직하게는, 전극단자들이 일측을 향하도록 배향되어 있고, 상기 전극단자의 대향측에 방열 부재가 위치하는 구조로 구성됨으로 써, 충방전 과정에서 전극단자에 고열이 전달되는 것을 방지할 수 있다. In general, a battery cell is divided into a structure in which the positive electrode terminal and the negative electrode terminal protrude on one side of the battery cell, and a structure in which the negative electrode terminal protrudes on the opposite side from which the positive electrode terminal protrudes. In the battery cell stack according to the present invention, the electrode terminals are preferably oriented so as to face one side, and the heat dissipation member is disposed on the opposite side of the electrode terminal, so that the electrode terminals are in the charge and discharge process. High heat can be prevented from being transmitted.

본 발명에서, 상기 열전도 부재는 열전도성이 우수한 소재이면 특별히 제한되지는 않으나, 일 예로, 금속 소재, 카본 소재, 또는 세라믹 소재로 형성될 수 있다. In the present invention, the heat conductive member is not particularly limited as long as it is a material having excellent thermal conductivity. For example, the heat conductive member may be formed of a metal material, a carbon material, or a ceramic material.

하나의 바람직한 예에서, 열전도 부재와 연결되어 전지셀 내부의 열을 외부로 방출시키기 위한 상기 방열 부재는, 전지셀의 폭과 전지셀 적층체의 높이에 대응하는 크기를 가진 본체와, 상기 본체의 외측 방향에 단면적을 크게 하여 효과적으로 열을 방출시키기 위해 다수의 방열 핀들이 형성되어 있는 구조로 이루어질 수 있다.In one preferred embodiment, the heat dissipation member connected to the heat conduction member for dissipating heat inside the battery cell to the outside, the main body having a size corresponding to the width of the battery cell and the height of the battery cell stack, and It may be made of a structure in which a plurality of heat dissipation fins are formed to effectively release heat by increasing the cross-sectional area in the outward direction.

상기 열전도 부재와 방열 부재를 연결하는 하나의 바람직한 예로서, 열전도 부재의 일측 단부에는 열전도 부재의 폭에 대응하는 체결부가 형성되어 있고, 상기 방열 부재에는 상기 체결부에 대응하는 체결홈이 형성되어 있어서, 열전도 부재의 체결부가 방열부재의 체결홈에 삽입되어 열전도 부재와 방열 부재를 상호 연결할 수 있다.As a preferred example of connecting the heat conductive member and the heat dissipation member, a fastening portion corresponding to the width of the heat conductive member is formed at one end of the heat conductive member, and the fastening groove corresponding to the fastening portion is formed in the heat dissipation member. The fastening portion of the heat conductive member may be inserted into the fastening groove of the heat dissipation member to interconnect the heat conductive member and the heat dissipation member.

또 다른 하나의 바람직한 예로서, 상기 방열 부재에 대한 열전도 부재의 접촉 계면적을 더욱 크게 하여 더욱 효과적으로 열을 전달할 수 있도록, 바람직하게는 열전도성 접착제 또는 열전도성 테이프를 이용하여 열전도 부재와 방열 부재를 상호 연결할 수 있다. As another preferred example, the heat conductive member and the heat dissipation member may be preferably formed by using a heat conductive adhesive or a heat conductive tape to increase the contact interface area of the heat conductive member with respect to the heat dissipation member so as to transfer heat more effectively. Can be interconnected.

본 발명의 전지모듈에서, 전지셀과 전지셀 사이에 위치하는 열전도 부재와 양면 접착 테이프는 대략 동일한 두께를 가지는 것이 바람직하다. 열전도 부재가 양면 접착 테이프보다 두꺼우면 양면 접착 테이프의 결합력이 떨어지고, 반대로 열전도 부재가 양면 접착 테이프보다 얇으면 열전도 부재가 각각의 전지셀과 안정적인 접촉상태를 유지하지 못하므로 전도열에 의한 전지셀의 방열 효과가 감소할 수 있다.In the battery module of the present invention, the heat conductive member and the double-sided adhesive tape positioned between the battery cell and the battery cell preferably have substantially the same thickness. If the thermally conductive member is thicker than the double-sided adhesive tape, the bonding strength of the double-sided adhesive tape is decreased. On the contrary, if the thermally conductive member is thinner than the double-sided adhesive tape, the heat conductive member does not maintain stable contact with each battery cell. The effect may be reduced.

이하에서는, 본 발명의 실시예에 따른 도면을 참조하여 설명하지만, 이는 본 발명의 더욱 용이한 이해를 위한 것으로, 본 발명의 범주가 그것에 의해 한정되는 것은 아니다.Hereinafter, although described with reference to the drawings according to an embodiment of the present invention, this is for easier understanding of the present invention, the scope of the present invention is not limited thereto.

도 1에는 본 발명의 하나의 실시예에 따른 전지모듈에서, 전지셀 표면에 양면 접착 테이프와 열전도 부재가 위치하고, 열전도 부재와 방열 부재가 연결된 형상이 모식적으로 도시되어 있다.1 illustrates a shape in which a double-sided adhesive tape and a heat conductive member are positioned on a surface of a battery cell, and a heat conductive member and a heat dissipation member are connected to each other in the battery module according to an embodiment of the present invention.

도 1을 참조하면, 전지셀(100)의 전극단자들(102, 104)이 일측을 향하도록 배향되어 있고, 이러한 전극단자들(102, 104)의 대향측에 방열 부재(350)가 위치한다. 전지셀(100)의 표면에는 1 쌍의 양면 접착 테이프(200)와, 양면 접착 테이프(200) 사이에 열전도 부재(300)가 위치한다. Referring to FIG. 1, the electrode terminals 102 and 104 of the battery cell 100 are oriented to one side, and the heat dissipation member 350 is positioned on the opposite side of the electrode terminals 102 and 104. . The heat conductive member 300 is positioned between the pair of double-sided adhesive tape 200 and the double-sided adhesive tape 200 on the surface of the battery cell 100.

열전도 부재(300)의 일측 단부에는 열전도 부재(300)의 폭에 대응하는 체결부가 형성되어 있고, 방열 부재(350)에는 열전도 부재(300)의 체결부에 대응하는 체결홈이 형성되어 있는 구조로 이루어져 있으며, 방열 부재(350)의 체결홈에 열전도 부재(300)의 체결부가 삽입됨으로써 열전도 부재(300)와 방열 부재(350)가 연결된다. At one end of the heat conductive member 300, a fastening portion corresponding to the width of the heat conductive member 300 is formed, and the heat dissipation member 350 has a fastening groove corresponding to the fastening portion of the heat conductive member 300. The fastening part of the heat conductive member 300 is inserted into the fastening groove of the heat dissipation member 350 to connect the heat conductive member 300 and the heat dissipation member 350.

양면 접착 테이프(200)는 전지셀(100) 상부에 또 다른 전지셀(도시하지 않음)이 적층될 때 전지셀들을 상호 고정시키고, 열전도 부재(300)가 정위치를 이탈하는 것을 방지한다. 전지셀(100)에서 발생한 열은 열전도 부재(300)를 따라 전도되어 방열 부재(350)를 통과해 전지모듈 외부로 방출된다. 이러한 방열 부재(350)는 전지셀(100)의 폭과 전지셀(100)의 적층체 높이에 대응하는 크기를 가지며, 효과적인 열 방출을 위해 전지모듈 본체의 외측 방향으로 다수의 방열 핀(352)들이 형성된 구조로 구성된다. The double-sided adhesive tape 200 fixes the battery cells to each other when another battery cell (not shown) is stacked on the battery cell 100, and prevents the thermal conductive member 300 from being in place. Heat generated in the battery cell 100 is conducted along the heat conducting member 300 and passed through the heat dissipation member 350 to be discharged to the outside of the battery module. The heat dissipation member 350 has a size corresponding to the width of the battery cell 100 and the stack height of the battery cell 100, and a plurality of heat dissipation fins 352 toward the outside of the battery module body for effective heat dissipation. It is composed of a structure formed.

도 2에는 도 1의 측면 모식도가 도시되어 있고, 도 3에는 도 2의 전지모듈 구조에서 다수의 전지셀이 적층되어 있는 구조에 대한 모식도가 도시되어 있다. 2 is a schematic side view of FIG. 1, and FIG. 3 is a schematic view of a structure in which a plurality of battery cells are stacked in the battery module structure of FIG. 2.

이들 도면을 참조하면, 전지셀(100)과 전지셀(110) 사이에 양면 접착 테이프(200)와 열전도 부재(300)가 개재되며, 열전도 부재(300)의 일측 단부는 적층체 외부의 방열 부재(350)와 연결된다. 열전도 부재(300)와 양면 접착 테이프(200)는 대략 동일한 두께로 이루어져 있고, 열전도 부재(300)는 1 쌍의 양면 접착 테이프(200) 사이에 위치한다. 양면 접착 테이프(200)가 전지셀(100)의 상부와 전지셀(200)의 하부를 고정함으로써 열전도 부재(300)의 상부와 하부 또한 전지셀들(100, 200)에 사이에 단단히 밀착되어 고정된다. Referring to these drawings, a double-sided adhesive tape 200 and a heat conductive member 300 are interposed between the battery cell 100 and the battery cell 110, and one end of the heat conductive member 300 is a heat dissipation member outside the laminate. Is connected to 350. The thermally conductive member 300 and the double-sided adhesive tape 200 are made of approximately the same thickness, and the thermally conductive member 300 is positioned between the pair of double-sided adhesive tape 200. The double-sided adhesive tape 200 fixes the upper part of the battery cell 100 and the lower part of the battery cell 200 so that the upper and lower parts of the heat conductive member 300 are tightly adhered to the battery cells 100 and 200. do.

도 4 및 도 5는 본 발명의 실시예를 보다 구체적으로 보여주기 위한 도면들로서, 도 4에는 본 발명의 또 다른 실시예에 따른 전지셀 사이의 열전도 부재와 방열 부재의 연결 분해도가 도시되어 있으며, 도면에 대한 상세한 설명은 도 1의 내용과 동일하다.4 and 5 are views for showing an embodiment of the present invention in more detail, Figure 4 is a connection exploded view of the heat conduction member and the heat dissipation member between the battery cell according to another embodiment of the present invention, Detailed description of the drawings is the same as the content of FIG. 1.

도 5에는 도 4의 전지셀들을 적층하고 열전도 부재와 방열부재를 전지셀들 사이에 개재한 전지모듈의 구성도가 도시되어 있으며, 도면에 대한 상세한 설명은 앞서 설명한 도 2 및 도 3에 대한 설명과 동일하다.FIG. 5 is a diagram illustrating a configuration of a battery module in which the battery cells of FIG. 4 are stacked and a heat conductive member and a heat dissipation member are interposed between the battery cells. The detailed description of the drawings is described with reference to FIGS. 2 and 3. Is the same as

이상 본 발명의 실시예에 따른 도면을 참조하여 설명하였지만, 본 발명이 속한 분야에서 통상의 지식을 가진 자라면 상기 내용을 바탕으로 본 발명의 범주내에서 다양한 응용 및 변형을 행하는 것이 가능할 것이다.Although described above with reference to the drawings according to an embodiment of the present invention, those of ordinary skill in the art will be able to perform various applications and modifications within the scope of the present invention based on the above contents.

이상의 설명과 같이, 본 발명에 따른 전지모듈은 전지셀과 전지셀 사이에 양면 접착 테이프와 열전도 부재 및 열전도 부재와 연결된 방열 부재를 위치시키고 전지셀을 차례로 적층한 구조의 전지모듈로서, 양면 접착 테이프에 의해 콤팩트한 구조로 전지셀 적층체가 견고하게 제작될 수 있고, 열전도 부재의 정위치 이탈을 방지하며, 충방전시 전지셀에서 발생한 열은 전지셀들 사이에 접촉되어 있는 열전도 부재를 따라 전도되어 방열 부재를 통해 전지모듈 외부로 방열됨으로써, 전지모듈의 국부적인 고열화를 방지하고, 방전시 전지셀 각각의 온도를 균일화하여 전지셀의 열화를 예방할 수 있으며, 궁극적으로 전지모듈의 수명을 크게 향상시킬 수 있는 효과가 있다.As described above, the battery module according to the present invention is a battery module having a structure in which a double-sided adhesive tape and a heat conducting member and a heat dissipating member connected to the heat conductive member are disposed between the battery cells and the battery cells, and the battery cells are sequentially stacked. Due to the compact structure, the battery cell stack can be manufactured firmly, and prevents the deviation of the heat conductive member from its position. The heat generated from the battery cell during charge and discharge is conducted along the heat conductive member in contact with the battery cells. By dissipating to the outside of the battery module through the heat dissipation member, it is possible to prevent the local high deterioration of the battery module, and to prevent the deterioration of the battery cell by uniformizing the temperature of each battery cell during discharge, and ultimately greatly improve the life of the battery module It can be effected.

Claims (8)

둘 또는 그 이상의 판상형 전지셀들이 순차적으로 적층되어 있는 중대형 전지모듈로서, 상기 전지셀의 적층체는 전지셀들 사이에 부가된 1 쌍의 양면 접착 테이프에 의해 결합되어 있고, 상기 양면 접착 테이프들 사이에 열전도 부재가 위치하며, 적어도 한 쌍의 전지셀들 사이에는 높은 열전도성의 부재('열전도 부재')가 개재되어 있고, 전지셀 적층체의 일측에는 방열을 위한 부재('방열 부재')가 위치하며, 상기 열전도 부재는 방열 부재에 연결되어 있는 것을 특징으로 하는 전지모듈. A medium-large battery module in which two or more plate-shaped battery cells are sequentially stacked, wherein the stack of battery cells is joined by a pair of double-sided adhesive tapes added between the battery cells, and between the double-sided adhesive tapes. The thermally conductive member is located in the battery cell, a high thermally conductive member ('thermally conductive member') is interposed between the at least one pair of battery cells, and a member for heat dissipation ('heat radiating member') is positioned at one side of the battery cell stack. And the heat conducting member is connected to a heat dissipation member. 제 1 항에 있어서, 상기 판상형 전지셀은 수지층 및 금속층을 포함하는 라미네이트 시트의 전지케이스에 전극조립체가 내장되어 있는 것을 특징으로 하는 전지모듈.The battery module according to claim 1, wherein the plate-shaped battery cell has an electrode assembly embedded in a battery case of a laminate sheet including a resin layer and a metal layer. 제 1 항에 있어서, 상기 전지셀 적층체는 전극단자들이 일측을 향하도록 배향되어 있고, 상기 전극단자의 대향측에 방열 부재가 위치하는 것을 특징으로 하는 전지모듈.The battery module according to claim 1, wherein the battery cell stack is oriented so that electrode terminals face one side, and a heat dissipation member is positioned on an opposite side of the electrode terminal. 제 1 항에 있어서, 상기 열전도 부재는 금속 소재, 카본 소재, 또는 세라믹 소재의 판재인 것을 특징으로 하는 전지모듈.The battery module according to claim 1, wherein the heat conducting member is a plate made of a metal material, a carbon material, or a ceramic material. 제 1 항에 있어서, 상기 방열 부재는 전지셀의 폭과 전지셀 적층체의 높이에 대응하는 크기를 가진 본체와, 상기 본체의 외측 방향으로 형성된 다수의 방열 핀들로 이루어진 것을 특징으로 하는 전지모듈.The battery module of claim 1, wherein the heat dissipation member comprises a body having a size corresponding to a width of the battery cell and a height of the battery cell stack, and a plurality of heat dissipation fins formed in an outer direction of the body. 제 1 항에 있어서, 상기 열전도 부재의 일측 단부에는 상기 열전도 부재의 폭에 대응하는 체결부가 형성되어 있고, 상기 방열 부재에는 상기 체결부에 대응하는 체결홈이 형성되어 있는 것을 특징으로 하는 전지모듈.The battery module according to claim 1, wherein a fastening portion corresponding to the width of the heat conductive member is formed at one end of the heat conductive member, and a fastening groove corresponding to the fastening portion is formed in the heat dissipation member. 제 1 항에 있어서, 상기 열전도 부재와 방열 부재는 방열 부재에 대한 열전도 부재의 접촉 계면적을 크게 할 수 있도록 열전도성 접착제 또는 열전도성 테이프를 이용하여 연결되는 구조로 이루어진 것을 특징으로 하는 전지모듈.The battery module according to claim 1, wherein the heat conductive member and the heat radiating member are connected by using a heat conductive adhesive or a heat conductive tape to increase the contact interface area of the heat conductive member with respect to the heat radiating member. 제 1 항에 있어서, 상기 열전도 부재는 양면 접착 테이프와 대략 동일한 두께를 가지는 것을 특징으로 하는 전지모듈.The battery module according to claim 1, wherein the heat conductive member has a thickness substantially equal to that of a double-sided adhesive tape.
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