KR102163866B1 - Method for connecting carbon fiber and metal wire - Google Patents

Method for connecting carbon fiber and metal wire Download PDF

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KR102163866B1
KR102163866B1 KR1020180142836A KR20180142836A KR102163866B1 KR 102163866 B1 KR102163866 B1 KR 102163866B1 KR 1020180142836 A KR1020180142836 A KR 1020180142836A KR 20180142836 A KR20180142836 A KR 20180142836A KR 102163866 B1 KR102163866 B1 KR 102163866B1
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South Korea
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metal sleeve
carbon fiber
conductive film
metal
carbon fibers
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KR1020180142836A
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Korean (ko)
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KR20200058167A (en
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김원석
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재단법인 한국탄소융합기술원
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
    • H01B1/12—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances organic substances
    • H01B1/124—Intrinsically conductive polymers
    • H01B1/127—Intrinsically conductive polymers comprising five-membered aromatic rings in the main chain, e.g. polypyrroles, polythiophenes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/16—Non-insulated conductors or conductive bodies characterised by their form comprising conductive material in insulating or poorly conductive material, e.g. conductive rubber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

본 발명에 따른 탄소섬유와 금속전선 간 연결방법은,
전도성 필름을 제작하는 제1단계;
금속슬리브에 삽입될 탄소섬유의 끝단에 상기 전도성 필름을 감싸는 제2단계; 및
상기 전도성 필름이 감싸진 탄소섬유의 끝단을 상기 금속슬리브의 일단에 삽입하고 압착하고, 상기 금속슬리브의 타단에 금속전선의 끝단을 넣고 상기 금속슬리브의 타단을 압착하는 제3단계를 포함하는 것을 특징으로 한다.The connection method between the carbon fiber and the metal wire according to the present invention,
A first step of producing a conductive film;
A second step of wrapping the conductive film around the end of the carbon fiber to be inserted into the metal sleeve; And
And a third step of inserting and compressing the end of the carbon fiber wrapped with the conductive film into one end of the metal sleeve, inserting the end of the metal wire into the other end of the metal sleeve, and compressing the other end of the metal sleeve. To do.

Description

탄소섬유와 금속전선 간 연결방법{METHOD FOR CONNECTING CARBON FIBER AND METAL WIRE}Connection method between carbon fiber and metal wire{METHOD FOR CONNECTING CARBON FIBER AND METAL WIRE}

본 발명은 탄소섬유와 금속전선 간 연결방법에 관한 것이다.The present invention relates to a connection method between a carbon fiber and a metal wire.

일반적으로, 금속슬리브를 써서 금속전선들을 연결한다. 금속슬리브는 구리, 니켈, 알루미늄 등으로 만들어진다. 금속전선으로 구리, 은, 금 등이 있다.In general, a metal sleeve is used to connect the metal wires. Metal sleeves are made of copper, nickel, and aluminum. Metal wires include copper, silver, and gold.

금속슬리브의 양쪽에 금속 전선을 넣고 양 끝을 압착하면, 금속슬리브가 압착 변형되면서 금속전선 주변을 감싼다. 압착된 금속슬리브는 금속전선과 면 접촉한다. 금속슬리브와 금속전선의 마찰력으로 인해, 금속슬리브로부터 금속전선이 쉽게 빠지지 않고, 금속전선은 전기적으로 서로 연결된다.When metal wires are put on both sides of the metal sleeve and both ends are crimped, the metal sleeve is compressed and deformed and wraps around the metal wire. The pressed metal sleeve is in surface contact with the metal wire. Due to the frictional force between the metal sleeve and the metal wire, the metal wire is not easily removed from the metal sleeve, and the metal wires are electrically connected to each other.

한편, 현재까지 금속전선들 간의 연결뿐만 아니라, 탄소섬유와 금속전선의 연결에도 금속슬리브가 사용되고 있다.Meanwhile, metal sleeves have been used not only for connection between metal wires, but also for connection between carbon fiber and metal wires.

탄소섬유는 3,000~24,000가닥의 탄소필라멘트들이 합쳐서 만들어진 고밀도 연성구조를 가지고, 흑연과 유사한 구조를 가지고 있어 쉽게 미끄러지는 성질을 가진다.Carbon fiber has a high-density ductile structure made by combining 3,000-24,000 strands of carbon filaments, and has a structure similar to graphite, so it slides easily.

이로 인해, 기존 금속슬리브 안에 탄소섬유를 넣고 압착하면 금속슬리브가 탄소섬유를 충분히 감싸지 못하고, 단순히 탄소섬유와 점 접촉만을 하게 된다.For this reason, when carbon fibers are put into the existing metal sleeve and pressed, the metal sleeve does not sufficiently cover the carbon fiber, and only point contact with the carbon fiber occurs.

이러한 점 접촉 상태에서는, 금속슬리브가 탄소섬유를 제대로 잡아주지 못해, 탄소섬유를 조금만 당겨도 금속슬리브로부터 쉽게 빠져버린다. 또한, 금속슬리브와 탄소섬유 간 전기적 접촉이 좋지 않아, 전류량이 많으면 금속슬리브가 과열된다.In such a point-contact state, the metal sleeve cannot hold the carbon fiber properly, so even if the carbon fiber is pulled a little, it is easily removed from the metal sleeve. In addition, the electrical contact between the metal sleeve and the carbon fiber is not good, and the metal sleeve is overheated when the amount of current is large.

또한, 금속슬리브가 연성의 탄소섬유를 직접 누름으로 인해, 탄소섬유가 쉽게 손상된다.In addition, because the metal sleeve directly presses the ductile carbon fiber, the carbon fiber is easily damaged.

또한, 한국공개실용신안(20-2011-0000602)에서 밝혔듯이, 밀착되지 않은 탄소섬유와 금속슬리브 사이에서 1000℃ 이상의 아크(arc)가 여러 번 발생하여, 금속슬리브가 용융되어 홀(hole)이 발생하고, 아크가 홀을 통해 외부로 튀어나가 화재를 일으킬 수 있다.In addition, as stated in the Korean Utility Model (20-2011-0000602), arcs of 1000°C or higher occur several times between the non-adherent carbon fiber and the metal sleeve, causing the metal sleeve to melt, resulting in a hole. Occurs, and the arc can jump out through the hole and cause a fire.

한국공개실용신안(20-2011-0000602)Korea Open Utility Model (20-2011-0000602)

본 발명의 목적은 상술한 문제점을 해결할 수 있는, 새로운 개념의 탄소섬유와 금속전선 간 연결방법을 제공하는 데 있다.An object of the present invention is to provide a new concept of a connection method between a carbon fiber and a metal wire capable of solving the above-described problems.

본 발명의 다른 목적은, 금속슬리브와 탄소섬유 사이 접합강도가 향상된 탄소섬유와 금속전선 간 연결방법을 제공하는 데 있다.Another object of the present invention is to provide a connection method between a carbon fiber and a metal wire having improved bonding strength between a metal sleeve and a carbon fiber.

본 발명의 또 다른 목적은, 금속슬리브의 누름으로 인한 탄소섬유의 손상이 방지된 탄소섬유와 금속전선 간 연결방법을 제공하는 데 있다.Another object of the present invention is to provide a connection method between a carbon fiber and a metal wire in which damage to the carbon fiber due to pressing of a metal sleeve is prevented.

본 발명의 또 다른 목적은, 금속슬리브와 탄소섬유 사이 아크 발생이 방지된 탄소섬유와 금속전선 간 연결방법을 제공하는 데 있다.Another object of the present invention is to provide a connection method between a carbon fiber and a metal wire in which an arc is prevented between a metal sleeve and a carbon fiber.

본 발명의 또 다른 목적은, 금속슬리브와 탄소섬유 간 전기전도성이 향상된 탄소섬유와 금속전선 간 연결방법을 제공하는 데 있다.Another object of the present invention is to provide a connection method between a carbon fiber and a metal wire with improved electrical conductivity between a metal sleeve and a carbon fiber.

상기 목적을 달성하기 위한 탄소섬유와 금속전선 간 연결방법은,The connection method between carbon fiber and metal wire to achieve the above object,

전도성 필름을 제작하는 제1단계;A first step of producing a conductive film;

금속슬리브에 삽입될 탄소섬유의 끝단에 상기 전도성 필름을 감싸는 제2단계; 및A second step of wrapping the conductive film around the end of the carbon fiber to be inserted into the metal sleeve; And

상기 전도성 필름이 감싸진 탄소섬유의 끝단을 상기 금속슬리브의 일단에 삽입하고 압착하고, 상기 금속슬리브의 타단에 금속전선의 끝단을 넣고 상기 금속슬리브의 타단을 압착하는 제3단계를 포함하는 것을 특징으로 한다.And a third step of inserting and compressing the end of the carbon fiber wrapped with the conductive film into one end of the metal sleeve, inserting the end of the metal wire into the other end of the metal sleeve, and compressing the other end of the metal sleeve. To do.

또한, 상기 목적은,In addition, the above purpose,

전도성 물질을 제조하는 제1단계;A first step of manufacturing a conductive material;

탄소섬유의 끝단이 삽입될 금속슬리브 일단을 상기 전도성 물질로 코팅하는 제2단계; 및A second step of coating one end of the metal sleeve into which the end of the carbon fiber is to be inserted with the conductive material; And

상기 전도성 물질로 코팅된 금속슬리브 일단에 상기 탄소섬유의 끝단을 삽입하고 상기 금속슬리브 일단을 압착하고, 상기 금속슬리브의 타단에 금속전선의 끝단을 넣고 상기 금속슬리브의 타단을 압착하는 제3단계를 포함하는 것을 특징으로 하는 탄소섬유와 금속전선 간 연결방법에 의해 달성된다.A third step of inserting the end of the carbon fiber into one end of the metal sleeve coated with the conductive material, compressing one end of the metal sleeve, inserting the end of the metal wire into the other end of the metal sleeve, and compressing the other end of the metal sleeve. It is achieved by a connection method between the carbon fiber and the metal wire, characterized in that it comprises.

본 발명은, 전도성 필름 또는 전도성 물질이 탄소섬유와 금속슬리브 사이에 개재되어 탄소섬유와 금속슬리브 사이 공간을 메운다. 이로 인해, 탄소섬유와 금속슬리브 사이 접합강도가 향상되고 탄소섬유와 금속슬리브 사이에서 아크 발생이 방지된다.In the present invention, a conductive film or a conductive material is interposed between the carbon fiber and the metal sleeve to fill the space between the carbon fiber and the metal sleeve. Due to this, the bonding strength between the carbon fiber and the metal sleeve is improved, and arcing between the carbon fiber and the metal sleeve is prevented.

또한, 금속슬리브가 탄소섬유를 직접 누르지 않아 탄소섬유의 손상이 방지된다.In addition, since the metal sleeve does not directly press the carbon fiber, damage to the carbon fiber is prevented.

또한, 금속슬리브와 탄소섬유 간 전기전도성이 향상된다.In addition, the electrical conductivity between the metal sleeve and the carbon fiber is improved.

도 1은 본 발명의 제1실시예에 따른 탄소섬유와 금속전선 간 연결방법을 나타낸 순서도이다.
도 2는 도 1에 도시된 탄소섬유와 금속전선 간 연결방법을 설명하기 위한 도면이다.
도 3은 도 2에 도시된 단면 Ⅲ-Ⅲ을 나타낸 도면이다.
도 4는 본 발명의 제2실시예에 따른 탄소섬유와 금속전선 간 연결방법을 나타낸 순서도이다.
도 5는 도 4에 도시된 탄소섬유와 금속전선 간 연결방법을 설명하기 위한 도면이다.
도 6은 도 5에 도시된 단면 Ⅵ-Ⅵ을 나타낸 도면이다.
도 7은 전도성 필름 및 전도성 물질 사양에 따른 탄소섬유와 금속슬리브 간 접촉저항을 비교한 표이다.1 is a flow chart showing a connection method between a carbon fiber and a metal wire according to a first embodiment of the present invention.
FIG. 2 is a diagram illustrating a connection method between a carbon fiber and a metal wire shown in FIG. 1.
3 is a view showing a cross section III-III shown in FIG. 2.
4 is a flow chart showing a connection method between a carbon fiber and a metal wire according to a second embodiment of the present invention.
5 is a view for explaining a connection method between the carbon fiber and the metal wire shown in FIG. 4.
6 is a view showing cross-sections VI-VI shown in FIG. 5.
7 is a table comparing contact resistance between carbon fibers and metal sleeves according to specifications of a conductive film and a conductive material.

이하, 본 발명의 제1실시예에 따른 탄소섬유와 금속전선 간 연결방법을 자세히 설명한다. 도 2 및 도 3을 기본적으로 참조한다.Hereinafter, a connection method between a carbon fiber and a metal wire according to a first embodiment of the present invention will be described in detail. Reference is basically made to FIGS. 2 and 3.

도 1에 도시된 바와 같이, 본 발명의 제1실시예에 따른 탄소섬유와 금속전선 간 연결방법은,As shown in Figure 1, the connection method between the carbon fiber and the metal wire according to the first embodiment of the present invention,

전도성 필름을 제작하는 제1단계(S11);A first step (S11) of producing a conductive film;

금속슬리브에 삽입될 탄소섬유의 끝단에 상기 전도성 필름을 감싸는 제2단계(S12); 및A second step (S12) of wrapping the conductive film around the end of the carbon fiber to be inserted into the metal sleeve; And

상기 전도성 필름이 감싸진 탄소섬유의 끝단을 상기 금속슬리브의 일단에 삽입하고 압착하고, 상기 금속슬리브의 타단에 금속전선의 끝단을 넣고 상기 금속슬리브의 타단을 압착하는 제3단계(S13)로 구성된다.Consists of a third step (S13) of inserting and compressing the end of the carbon fiber wrapped with the conductive film into one end of the metal sleeve, inserting the end of the metal wire into the other end of the metal sleeve, and compressing the other end of the metal sleeve do.

이하, 제1단계(S11)를 설명한다.Hereinafter, the first step (S11) will be described.

[실시예 1] 메틸에틸케톤(MEK) 50g에 열가소성 폴리우레탄(TPU) 50g을 녹여서 50% 용액을 만들고, 평균 직경 100nm의 은 나노분말 100g을 섞고 이를 80도로 가열된 롤(roll)에 토출하면서 건조하여 전도성 필름(13)을 제작한다. 전도성 필름(13)을 14um 두께로 만들어 탄소섬유(12)를 감싸면, 금속슬리브(11)와 탄소섬유(12) 사이 접촉저항은 0,15Ω이 나온다.[Example 1] A 50% solution was prepared by dissolving 50 g of thermoplastic polyurethane (TPU) in 50 g of methyl ethyl ketone (MEK), mixing 100 g of silver nanopowder with an average diameter of 100 nm, and discharging it on a roll heated to 80 degrees. Dry to prepare a conductive film (13). When the conductive film 13 is made to have a thickness of 14 μm and wraps the carbon fiber 12, the contact resistance between the metal sleeve 11 and the carbon fiber 12 is 0,15Ω.

이 밖에, 에틸렌초산비닐 공중합체(EVA)를 주성분으로 하는 핫멜트(hotmelt)에 은, 구리, 니켈 나노분말을 혼합하고 경화시켜 전도성 필름(13)을 제작한다.In addition, the conductive film 13 is prepared by mixing and curing silver, copper, and nickel nanopowder in a hotmelt containing ethylene vinyl acetate copolymer (EVA) as a main component.

또는, 열가소성 폴리우레탄(TPU)에 은, 구리, 니켈 나노분말을 혼합하고 경화시켜 전도성 필름(13)을 제작한다.Alternatively, a conductive film 13 is prepared by mixing and curing silver, copper, and nickel nanopowder in a thermoplastic polyurethane (TPU).

또는, 폴리 (3,4-에틸렌 디옥 시티 오펜) 폴리스티렌 설포 네이트(PEDOT:PPS) 같은 전도성폴리머로 전도성 필름(13)을 제작한다.Alternatively, the conductive film 13 is made of a conductive polymer such as poly(3,4-ethylene dioxitioffene) polystyrene sulfonate (PEDOT:PPS).

또는, 에틸렌초산비닐 공중합체(EVA), 열가소성 폴리우레탄(TPU) 등 연질 폴리머를 포함하는 바인더에 탄소나노튜브 또는 그래핀을 혼합하고 경화시켜 전도성 필름(13)을 제작한다.Alternatively, a conductive film 13 is prepared by mixing and curing carbon nanotubes or graphene in a binder containing a soft polymer such as ethylene vinyl acetate copolymer (EVA) or thermoplastic polyurethane (TPU).

이하, 제2단계(S12)를 설명한다.Hereinafter, the second step (S12) will be described.

금속슬리브(11)의 일단에 삽입될 탄소섬유(12)의 끝단에 전도성 필름(13)을 감싼다.The conductive film 13 is wrapped around the end of the carbon fiber 12 to be inserted into one end of the metal sleeve 11.

탄소섬유(12)는 여러 가닥으로 구성된다. 본 실시예에서는 24000(24K)가닥으로 구성된다. 다만, 도 2 및 도 3에서는 도면의 복잡해짐을 피하기 위해, 몇 가닥만을 도시하였다.The carbon fiber 12 is composed of several strands. In this embodiment, it is composed of 24000 (24K) strands. However, in FIGS. 2 and 3, only a few strands are shown in order to avoid complicating the drawing.

24K 탄소섬유(12)를 원형으로 모으고 끝단 5mm에 전도성 필름(13)을 한 바퀴 반 정도 감는다.The 24K carbon fibers 12 are collected in a circle, and the conductive film 13 is wound around the end of 5 mm.

탄소섬유(12)에 전도성 필름(13)을 감을 때, 금속슬리브(11)에 탄소섬유(12)를 삽입 후, 도 2에 도시된 바와 같이, 금속슬리브(11) 바깥으로 전도성 필름(13)이 삐져나올 수 있도록 감는다. 이렇게, 전도성 필름(13)이 금속슬리브(11) 바깥으로 나오면, 탄소섬유(12)가 자주 굽어지더라도, 탄소섬유(12)와 금속슬리브(11)의 끝단 간의 마찰이 줄어, 탄소섬유(12)가 손상되지 않는다.When winding the conductive film 13 on the carbon fiber 12, after inserting the carbon fiber 12 into the metal sleeve 11, as shown in Figure 2, the conductive film 13 outside the metal sleeve 11 Wind it so that it sticks out. In this way, when the conductive film 13 comes out of the metal sleeve 11, even if the carbon fiber 12 is frequently bent, the friction between the ends of the carbon fiber 12 and the metal sleeve 11 decreases, and the carbon fiber 12 ) Is not damaged.

이하, 제3단계(S13)를 설명한다.Hereinafter, the third step (S13) will be described.

전도성 필름(13)이 감싸진 탄소섬유(12)의 끝단을 금속슬리브(11)의 일단에 삽입하고 압착한다. 금속슬리브(11) 압착시 금속슬리브(11) 전체를 눌러 도 3에 도시된 바와 같이, 금속슬리브(11)의 단면을 타원형으로 만든다.The end of the carbon fiber 12 wrapped with the conductive film 13 is inserted into one end of the metal sleeve 11 and then compressed. When pressing the metal sleeve 11, the entire metal sleeve 11 is pressed to make the cross section of the metal sleeve 11 elliptical as shown in FIG. 3.

금속슬리브(11)가 압착되면, 도 3에 도시된 바와 같이, 전도성 필름(13)의 일부가 24K 탄소섬유(12) 사이 공간으로 파고 들어가, 금속슬리브(11)와 탄소섬유(12) 사이 공간을 메워 없애고, 금속슬리브(11)와 탄소섬유(12)를 선 접촉 내지 면 접촉하게 만든다. When the metal sleeve 11 is pressed, a part of the conductive film 13 penetrates into the space between the 24K carbon fibers 12, as shown in FIG. 3, and the space between the metal sleeve 11 and the carbon fibers 12 To remove the filling, the metal sleeve 11 and the carbon fiber 12 is made in line or surface contact.

이렇게 금속슬리브(11)와 탄소섬유(12)의 접촉 면적이 넓어지면 미끄러짐에 대한 저항이 커져서 금속슬리브(11)로부터 탄소섬유(12)가 쉽게 빠지지 않는다. 또한, 금속슬리브(11)의 직접적 누름에 의한 탄소섬유(12)의 손상을 없앨 수 있다. 또한, 금속슬리브(11)와 탄소섬유(12) 간 전기전도성을 향상시킬 수 있다.As the contact area between the metal sleeve 11 and the carbon fiber 12 increases, the resistance against slipping increases, so that the carbon fiber 12 does not easily come off from the metal sleeve 11. In addition, damage to the carbon fibers 12 due to direct pressing of the metal sleeve 11 can be eliminated. In addition, electrical conductivity between the metal sleeve 11 and the carbon fiber 12 may be improved.

금속슬리브(11)의 타단에 금속전선(14)의 끝단을 넣고, 금속슬리브(11)의 타단을 압착한다. 금속슬리브(11) 압착시 금속슬리브(11) 전체를 눌러 단면을 타원형으로 만든다. 이때, 금속전선(14)도 타원형으로 변형되어, 금속슬리브(11)과 밀착된다.Insert the end of the metal wire 14 into the other end of the metal sleeve 11, and press the other end of the metal sleeve 11. When pressing the metal sleeve 11, the entire cross-section of the metal sleeve 11 is pressed into an elliptical shape. At this time, the metal wire 14 is also deformed into an elliptical shape, and is in close contact with the metal sleeve 11.

이하, 본 발명의 제2실시예에 따른 탄소섬유와 금속전선 간 연결방법을 자세히 설명한다. 도 5 및 도 6을 기본적으로 참조한다.Hereinafter, a connection method between a carbon fiber and a metal wire according to a second embodiment of the present invention will be described in detail. Reference is made to FIGS. 5 and 6 by default.

도 4에 도시된 바와 같이, 본 발명의 제2실시예에 따른 탄소섬유와 금속전선 간 연결방법은,As shown in Figure 4, the connection method between the carbon fiber and the metal wire according to the second embodiment of the present invention,

전도성 물질을 제조하는 제1단계(S21);A first step (S21) of manufacturing a conductive material;

탄소섬유의 끝단이 삽입될 금속슬리브 일단을 상기 전도성 물질로 코팅하는 제2단계(S22); 및A second step (S22) of coating one end of the metal sleeve into which the end of the carbon fiber is to be inserted with the conductive material; And

상기 전도성 물질로 코팅된 금속슬리브 일단에 상기 탄소섬유의 끝단을 삽입하고 상기 금속슬리브 일단을 압착하고, 상기 금속슬리브의 타단에 금속전선의 끝단을 넣고 상기 금속슬리브의 타단을 압착하는 제3단계(S23)로 구성된다.The third step of inserting the end of the carbon fiber into one end of the metal sleeve coated with the conductive material, compressing one end of the metal sleeve, inserting the end of the metal wire into the other end of the metal sleeve, and compressing the other end of the metal sleeve ( S23).

이하, 제1단계(S21)를 설명한다.Hereinafter, the first step (S21) will be described.

[실시예 2] 메틸에틸케톤(MEK) 50g에 열가소성 폴리우레탄(TPU) 50g을 녹여서 50% 용액을 만들고, 평균 직경 100nm의 은 나노분말 100g을 섞어 전도성 물질(23)을 제조한다. 전도성 물질(23)을 14um 두께로 금속슬리브(11) 일단에 코팅하면, 금속슬리브(11)와 탄소섬유(12) 사이 접촉저항은 0,15Ω이 나온다.[Example 2] A 50% solution was prepared by dissolving 50 g of thermoplastic polyurethane (TPU) in 50 g of methyl ethyl ketone (MEK), and 100 g of silver nanopowder having an average diameter of 100 nm was mixed to prepare a conductive material 23. When the conductive material 23 is coated on one end of the metal sleeve 11 to a thickness of 14 μm, the contact resistance between the metal sleeve 11 and the carbon fiber 12 is 0,15Ω.

이 밖에, 에틸렌초산비닐 공중합체(EVA)를 주성분으로 하는 핫멜트(hotmelt)에 은, 구리, 니켈 나노분말을 혼합하여 전도성 물질(23)을 제조한다.In addition, a conductive material 23 is prepared by mixing silver, copper, and nickel nanopowder in a hotmelt containing ethylene vinyl acetate copolymer (EVA) as a main component.

또는, 열가소성 폴리우레탄(TPU)에 은, 구리, 니켈 나노분말을 혼합하여 전도성 물질(23)을 제조한다.Alternatively, the conductive material 23 is prepared by mixing silver, copper, and nickel nanopowder with thermoplastic polyurethane (TPU).

또는, 폴리 (3,4-에틸렌 디옥 시티 오펜) 폴리스티렌 설포 네이트(PEDOT:PPS) 같은 전도성폴리머로 전도성 물질(23)을 제조한다.Alternatively, the conductive material 23 is prepared from a conductive polymer such as poly(3,4-ethylene dioxitioffene) polystyrene sulfonate (PEDOT:PPS).

또는, 에틸렌초산비닐 공중합체(EVA), 열가소성 폴리우레탄(TPU) 등 연질 폴리머를 포함하는 바인더에 탄소나노튜브 또는 그래핀을 혼합하여 전도성 물질(23)을 제조한다.Alternatively, the conductive material 23 is prepared by mixing carbon nanotubes or graphene in a binder containing a soft polymer such as ethylene vinyl acetate copolymer (EVA) or thermoplastic polyurethane (TPU).

이하, 제2단계(S22)를 설명한다.Hereinafter, the second step (S22) will be described.

탄소섬유(12)의 끝단이 삽입될 금속슬리브(11) 일단을 전도성 물질(23)로 코팅한다.One end of the metal sleeve 11 into which the end of the carbon fiber 12 is to be inserted is coated with a conductive material 23.

이를 위해, 전도성 물질(23)이 담긴 용기에, 금속슬리브(11) 일단을 담그고 빼고 건조하기를 수차례 반복하여, 금속슬리브(11) 일단에 전도성 물질(23)을 14um 정도의 두께로 코팅한다.To this end, in a container containing the conductive material 23, one end of the metal sleeve 11 is immersed, removed, and dried several times, and the conductive material 23 is coated on one end of the metal sleeve 11 to a thickness of about 14 μm. .

이하, 제3단계(S23)를 설명한다.Hereinafter, the third step (S23) will be described.

탄소섬유(12)는 여러 가닥으로 구성된다. 본 실시예에서는 24000(24K)가닥으로 구성된다. 다만, 도 5 및 도 6에서는 도면의 복잡해짐을 피하기 위해, 몇 가닥만을 도시하였다.The carbon fiber 12 is composed of several strands. In this embodiment, it is composed of 24000 (24K) strands. However, in FIGS. 5 and 6, only a few strands are shown in order to avoid complicating the drawing.

24K 탄소섬유(12)를 원형으로 모아서, 전도성 물질(23)로 코팅된 금속슬리브(11) 일단에 삽입한다. 금속슬리브(11)의 일단을 압착한다.The 24K carbon fibers 12 are collected in a circle and inserted into one end of the metal sleeve 11 coated with the conductive material 23. One end of the metal sleeve 11 is pressed.

금속슬리브(11) 압착시 금속슬리브(11) 전체를 눌러 도 5에 도시된 바와 같이, 금속슬리브(11)의 단면을 타원형으로 만든다.When the metal sleeve 11 is pressed, the entire metal sleeve 11 is pressed to make the cross section of the metal sleeve 11 elliptical, as shown in FIG. 5.

금속슬리브(11)가 압착되면, 도 6에 도시된 바와 같이, 전도성 물질(23)의 일부가 24K 탄소섬유(12) 사이 공간으로 파고 들어가, 금속슬리브(11)와 탄소섬유(12) 사이 공간을 메워 없애고, 금속슬리브(11)와 탄소섬유(12)를 선 접촉 내지 면 접촉하게 만든다.When the metal sleeve 11 is pressed, a part of the conductive material 23 penetrates into the space between the 24K carbon fibers 12, as shown in FIG. 6, and the space between the metal sleeve 11 and the carbon fibers 12 To remove the filling, the metal sleeve 11 and the carbon fiber 12 is made in line or surface contact.

이렇게 금속슬리브(11)와 탄소섬유(12)의 접촉 면적이 넓어지면 미끄러짐에 대한 저항이 커져서 금속슬리브(11)로부터 탄소섬유(12)가 쉽게 빠지지 않는다. 또한, 금속슬리브(11)의 직접적 누름에 의한 탄소섬유(12)의 손상을 없앨 수 있다. 또한, 금속슬리브(11)와 탄소섬유(12) 간 전기전도성을 향상시킬 수 있다.As the contact area between the metal sleeve 11 and the carbon fiber 12 increases, the resistance against slipping increases, so that the carbon fiber 12 does not easily come off from the metal sleeve 11. In addition, damage to the carbon fibers 12 due to direct pressing of the metal sleeve 11 can be eliminated. In addition, electrical conductivity between the metal sleeve 11 and the carbon fiber 12 may be improved.

금속슬리브(11)의 타단에 금속전선(14)의 끝단을 넣고, 금속슬리브(11)의 타단을 압착한다. 금속슬리브(11) 압착시 전체를 눌러 단면을 타원형으로 만든다. 이때, 금속전선(14)도 타원형으로 변형되어, 금속슬리브(11)과 밀착된다.Insert the end of the metal wire 14 into the other end of the metal sleeve 11, and press the other end of the metal sleeve 11. When pressing the metal sleeve 11, the entire section is pressed to form an elliptical cross section. At this time, the metal wire 14 is also deformed into an elliptical shape, and is in close contact with the metal sleeve 11.

실험 결과, 도 7에 도시된 바와 같이, 종래처럼, 전도성 필름(13)이나 전도성 물질(23) 없이, 금속슬리브(11)에 탄소섬유(12)를 직접 연결할 경우, 금속슬리브(11)와 탄소섬유(12) 사이 접촉저항은 0.4Ω으로 나타났다.As a result of the experiment, as shown in FIG. 7, when the carbon fiber 12 is directly connected to the metal sleeve 11 without the conductive film 13 or the conductive material 23, as in the prior art, the metal sleeve 11 and carbon The contact resistance between the fibers 12 was found to be 0.4Ω.

그러나, 상술한 바와 같은, 전도성 필름(13)이나 전도성 물질(23)을 매개로, 금속슬리브(11)와 탄소섬유(12)를 간접적으로 연결할 경우, 금속슬리브(11)와 탄소섬유(12) 사이 접촉저항은, 0.1~0.26Ω으로, 종래에 비해 35% 내지 75% 까지 대폭 감소하였다.However, as described above, when indirectly connecting the metal sleeve 11 and the carbon fiber 12 via the conductive film 13 or the conductive material 23, the metal sleeve 11 and the carbon fiber 12 The contact resistance between them is 0.1 to 0.26 Ω, which is significantly reduced by 35% to 75% compared to the prior art.

11: 금속슬리브 12: 탄소섬유
13: 전도성 필름 14: 금속전선
23: 전도성 물질11: metal sleeve 12: carbon fiber
13: conductive film 14: metal wire
23: conductive material

Claims (5)

에틸렌초산비닐 공중합체(EVA)를 주성분으로 하는 핫멜트에 은, 구리, 니켈 나노분말을 혼합하고 경화시켜 전도성 필름을 제작하거나, 열가소성 폴리우레탄(TPU)에 은, 구리, 니켈 나노분말을 혼합하고 경화시켜 전도성 필름을 제작하거나, 폴리 (3,4- 에틸렌 디옥 시티 오펜) 폴리스티렌 설포 네이트(PEDOT:PPS)로 전도성 필름을 제작하는 제1단계;
금속슬리브에 삽입될 탄소섬유들의 끝단에 상기 전도성 필름을 감싸는 제2단계;
상기 전도성 필름이 감싸진 탄소섬유들의 끝단을 상기 금속슬리브의 일단에 삽입하고, 상기 금속슬리브의 타단에 금속전선의 끝단을 삽입하는 제3단계; 및
상기 금속전선의 끝단이 삽입된 상기 금속슬리브의 타단을 압착하고,
상기 전도성 필름이 감싸진 탄소섬유들의 끝단이 삽입된 상기 금속슬리브의 일단을 압착하여, 상기 전도성 필름의 일부가 상기 탄소섬유들 사이 공간으로 파고 들어 상기 금속슬리브와 상기 탄소섬유들 사이 아크가 발생할 수 있는 공간을 메워 없애는 제4단계를 포함하는 것을 특징으로 하는 탄소섬유와 금속전선 간 연결방법.A conductive film is prepared by mixing and curing silver, copper, and nickel nanopowder in a hot melt containing ethylene vinyl acetate copolymer (EVA) as a main component, or mixing and curing silver, copper and nickel nanopowder in a thermoplastic polyurethane (TPU) A first step of producing a conductive film by making a conductive film, or preparing a conductive film with poly (3,4-ethylene dioxitioffene) polystyrene sulfonate (PEDOT:PPS);
A second step of wrapping the conductive film around ends of carbon fibers to be inserted into the metal sleeve;
A third step of inserting the ends of the carbon fibers wrapped with the conductive film into one end of the metal sleeve and inserting the end of the metal wire into the other end of the metal sleeve; And
Pressing the other end of the metal sleeve into which the end of the metal wire is inserted,
By compressing one end of the metal sleeve into which the ends of the carbon fibers wrapped around the conductive film are inserted, a part of the conductive film penetrates into the space between the carbon fibers, so that an arc may occur between the metal sleeve and the carbon fibers. A method for connecting carbon fibers and metal wires, comprising: a fourth step of filling and removing existing spaces. 삭제delete 삭제delete 삭제delete 삭제delete
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