KR101998370B1 - Metal-coated carbon fibers for automotive heating and automotive heating apparatus of including metal-coated carbon fibers - Google Patents

Abstract

The present invention relates to a metal-coated carbon fiber for a heating wire of a vehicle, and a heating wire of a vehicle including the same, which are provided with increased profitability, user convenience, and durability. According to the present invention, the metal-coated carbon fiber comprises: one or more carbon fibers spaced apart from each other; and a plurality of metal layers sequentially coated on the one or more carbon fibers, wherein a predetermined metal layer reduces an electric resistance formed by the one or more carbon fibers. Moreover, the heating wire of a vehicle including the metal-coated carbon fiber comprises a thermal conductive insulating sheet including a pattern of the metal-coated carbon fiber. The metal-coated carbon fiber comprises: one or more carbon fibers spaced apart from each other; and a plurality of metal layers sequentially coated on the one or more carbon fibers wherein a predetermined metal layer reduces an electric resistance formed by the one or more carbon fibers.

Description

TECHNICAL FIELD [0001] The present invention relates to a metal-coated carbon fiber for a vehicle hot wire, and a heat wire for a vehicle including the same. BACKGROUND OF THE INVENTION [0001]

TECHNICAL FIELD The present invention relates to a metal coated carbon fiber and a hot wire for a vehicle including the metal coated carbon fiber. More particularly, the present invention relates to a metal coated carbon fiber in which at least one metal is sequentially coated on a carbon fiber and a hot wire for a vehicle including the same.

Carbon fiber or carbon fiber is a very thin fiber whose main component is carbon. The molecular structure of carbon atoms composing carbon fiber has physical and chemical properties due to its structural specificity. Carbon fibers are produced by spinning and post-treatment of carbon fiber filaments of several thousand or more strands. Carbon fibers can be produced in various thicknesses by means of these spinning processes.

Carbon fibers are also highly conductive and can deliver low currents. It can be used to stably transfer infrared heating in applications where flexible heating elements are required. It can be used relatively safely between most fabrics and materials because of its physical properties and chemical stability that can withstand temperatures exceeding 100 ° C have.

Because of its high tensile strength, light weight and low coefficient of thermal expansion, carbon fiber is widely used for interior materials, functional materials and exterior materials for military equipment, automobile, aerospace industry, civil engineering construction, and various sports fields. Metal-coated carbon fibers that combine the advantages of carbon fibers and the advantages of metals by coating various metals on these carbon fibers have been developed and studied.

Korean Patent Laid-Open No. 10-0033660 relates to a 24v heating mat for a cargo truck using a carbon fiber heating wire, more specifically, a 24v heating mat for a cargo truck, which comprises a carbon yarn 110, A plurality of carbon heating elements 100 composed of a pressure-sensitive adhesive layer 120 surrounding the outer side of the yarn 110; An upper enclosure 200 surrounding the upper portion of the carbon heating body 100 and having a power jack 210 selectively connected to a cigar jack of a cargo truck on one side thereof; A lower enclosure 300 surrounding the lower portion of the carbon heating element 100; A conductor 400 formed on one side of the upper and lower sheaths 200 and 300 to electrically connect the carbon heating elements 100; The carbon heating body 200 is disposed on the other side of the conductor 400 of the upper and lower jackets 200 and 300 and is disposed at an end of the upper and lower jackets 200 and 300 facing each other, Each electrode plate 500 connecting the electrodes in parallel; A high heat-resistant adhesive binder 600 formed on the outer sides of the upper and lower shells 200 and 300; A skin 700 which is pressed and stacked on the outer side of the adhesive binder 600, respectively; And is selectively connected to the cigar jack of the cargo truck as necessary to block the heat of the carbon heating element 100 from moving to the outside, thereby maintaining the intrinsic purpose of the heating mat as it is, It is possible to secure the portability and portability and flexibility, and it is possible to prevent the internal heat from leaking to the outside, by forming the outer surface of the carbon heating element by laminating separate skin layers, , The lower shell and the skin are formed to prevent the spread of fire, have low power and high heat generation ability, and can form a high temperature within a short time.

Korean Patent No. 10-1206413 discloses that a surface of a heating sheet can be printed by mixing a carbon powder with an adhesive component that maintains a gel state that is not completely cured even after application and drying on an adhesive surface, And to provide a thermally conductive carbon ink composition having excellent heat resistance and heat resistance and a heat-generating sheet using the same. For this purpose, in the present invention, 40 to 50 parts by weight of an acrylic copolymer; 20 to 30 parts by weight of ethyl acetate; 10 to 20 parts by weight of acetone; 20 to 25% by weight of a pressure-sensitive adhesive comprising 0.2 to 10 phr of isocyanate and 0.3 to 5 phr of a conductive polymer mixed with 100 phr of a subject containing 20 to 30 parts by weight of toluene; A thermally conductive carbon ink composition comprising 75 to 80% by weight of carbon powder is disclosed.

Korean Patent Publication No. 10-0033660 (Registered on Apr. 4, 2014) Korean Registered Patent No. 10-1206413 (registered May 05, 2012)

One embodiment of the present invention is to provide a metal coated carbon fiber for a hot wire of a vehicle comprising a plurality of metal layers that are sequentially coated on carbon fibers and a specific metal layer reduces electrical resistance formed by the at least one carbon fiber .

One embodiment of the present invention is to provide a hot wire for a vehicle that includes metal coated carbon fibers with increased profitability, ease of use, and durability through metal coated carbon fibers for hot wire.

In embodiments, the metal coated carbon fibers for hot wire of a vehicle comprise at least one carbon fiber spaced apart and at least one metal or alloy selected from the group consisting of Ni and Ag, which is sequentially coated on the at least one carbon fiber A first metal layer, a second metal layer comprising at least one metal or alloy selected from the group consisting of Cu, Al and Ag to reduce electrical resistance formed by the at least one carbon fiber, and at least one selected from the group consisting of Ni and Cr And a plurality of metal layers including a third metal layer including a metal or an alloy.

A first one of the plurality of metal layers is formed through physical vapor deposition (PVD) of the Ni in a spreading state of the at least one carbon fiber. The first metal layer is coated directly on the carbon fibers to a thickness of 20 to 200 nm.

A second one of the plurality of metal layers is formed through physical vapor deposition (PVD) of the Cu in a deposited state of the first metal layer. The second metal layer is sequentially coated on the first metal layer to a thickness of 50 to 800 nm.

A third one of the plurality of metal layers is formed through physical vapor deposition (PVD) of the Ni in a deposited state of the second metal layer. The third metal layer is sequentially coated on the second metal layer to a thickness of 20 to 200 nm.

Wherein the hot wire for the vehicle comprises a thermally conductive insulating sheet comprising a pattern of metal coated carbon fibers for heating the vehicle, wherein the metal coated carbon fibers for the hot wire of the vehicle comprise at least one carbon fiber spaced apart from one another and the at least one carbon fiber Wherein the pattern is disposed along an inner circumference of the thermally conductive insulating sheet, wherein the thermal conductive property of the at least one carbon fiber And is recessed inward of the insulating sheet to be formed relatively closely.

And the metal coated carbon fiber for the hot wire of the vehicle is directly connected to the electric current supply line without a separate connector at both ends thereof. The thermally conductive insulating sheet of the hot wire for a vehicle is formed of a nonwoven fabric which fixes and bonds both surfaces of the metal coated carbon fiber with the inside thereof.

The disclosed technique may have the following effects. It is to be understood, however, that the scope of the disclosed technology is not to be construed as limited thereby, as it is not meant to imply that a particular embodiment should include all of the following effects or only the following effects.

One embodiment of the present invention provides a metal coated carbon fiber for a hot wire of a vehicle comprising a plurality of metal layers that are sequentially coated on carbon fibers and a specific metal layer reduces the electrical resistance formed by the at least one carbon fiber have.

An embodiment of the present invention can provide a hot wire for a vehicle including metal coated carbon fibers with increased profitability, ease of use and durability through metal coated carbon fibers for a hot wire of a vehicle.

1 is a view showing a metal coated carbon fiber for a hot wire of a vehicle according to an embodiment of the present invention.
2A and 2B are cross-sectional views illustrating metal coated carbon fibers for a hot wire of a vehicle according to FIG.
Fig. 3 is a view showing a heat ray for a vehicle including metal coated carbon fibers for a hot wire of a vehicle according to Fig. 1. Fig.
4 is a cross-sectional view showing an AA 'cross-section of a hot wire for a vehicle including metal coated carbon fibers for a hot wire of a vehicle according to 1. Fig.
FIG. 5 is a graph showing the responsiveness of a hot wire for a vehicle including the metal coated carbon fiber for a hot wire of the vehicle according to FIG. 1 in a temperature axis graph along the time axis.
FIG. 6 is a table showing the responsiveness of a hot wire for a vehicle including the metal coated carbon fiber for a hot wire according to FIG. 1, according to heat generation time. FIG.

The description of the present invention is merely an example for structural or functional explanation, and the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, the embodiments are to be construed as being variously embodied and having various forms, so that the scope of the present invention should be understood to include equivalents capable of realizing technical ideas. Also, the purpose or effect of the present invention should not be construed as limiting the scope of the present invention, since it does not mean that a specific embodiment should include all or only such effect.

Meanwhile, the meaning of the terms described in the present application should be understood as follows.

The terms "first "," second ", and the like are intended to distinguish one element from another, and the scope of the right should not be limited by these terms. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It is to be understood that the singular " include " or "have" are to be construed as including the stated feature, number, step, operation, It is to be understood that the combination is intended to specify that it does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used predefined terms should be interpreted to be consistent with the meanings in the context of the related art and can not be interpreted as having ideal or overly formal meaning unless explicitly defined in the present application.

1 is a view showing a metal coated carbon fiber for a hot wire of a vehicle according to an embodiment of the present invention.

Referring to FIG. 1, a metal coated carbon fiber 100 for a hot wire includes a carbon fiber 110 and a metal layer 120.

The carbon fibers 110 include a plurality of strands of carbon fiber filaments (not shown). For example, the carbon fibers 110 may be manufactured through spinning, coagulation, and post-treatment of raw materials, and may be manufactured in various thicknesses by adjusting the amount of spinning discharge and elongation rate during the manufacturing process. The carbon fibers 110 may be made of a pitch-type or PAN (polyacrylonitrile) -based material.

The metal coated carbon fiber 100 for a vehicle hot wire is formed by dividing at least one kind of metal by a physical vapor deposition method (PVD: Physical Vapor Deposition) into strands and spreading the carbon fibers 110 on the metal layer 120 ), And sequentially coating different types of metal with a metal layer 120 of a desired thickness. The metal coated carbon fiber 100 for a hot wire of a vehicle includes a plurality of metal layers 120 made of one or more metals or alloys coated by physical vapor deposition.

In one embodiment, the metal coated carbon fiber 100 for a hot wire of a vehicle may be one of thermal evaporation deposition (PVD), sputtering deposition, and atomic layer deposition (ALD) One or more metals may be directly deposited on the spread carbon fibers 110 to a desired thickness or deposited on the deposited coated metal layer 120 in a desired thickness sequentially. The metal coated carbon fiber 100 for a hot wire of a vehicle may comprise one or more metal layers 120 made of one or more metals or alloys through physical vapor deposition.

The metal coated carbon fiber 100 for a vehicle hot wire has a lower electrical resistance value than the carbon fiber 110 due to a specific metal layer 120 formed of one or more metal or alloy layers coated on the carbon fiber. Metal coated carbon fibers 100 for vehicle hot wire have advantages in their use as heating elements due to their low electrical resistance.

In one embodiment, the metal coated carbon fiber 100 for a hot wire may have a lower electrical resistance than the carbon fibers 110 when it comprises a metal layer 120 coated with a metal or an alloy of low electrical resistance. The metal coated carbon fiber 100 for a hot wire for a vehicle can have both the merits of the carbon fiber 110 heating element and the merit of the metal heating element in use as a heating element because of its low electrical resistance property. The metal coated carbon fiber 100 for a vehicle hot wire is more flexible than a metal heating element and can realize various patterns. It is easy to carry and store in a roll form, has high physical durability and electrical durability, Time increase and cost reduction in the production process.

In one embodiment, the metal-coated carbon fiber 100 heating element for heating the vehicle has a lower electrical resistance than that of the carbon fiber 110 heating element, so that a separate electrode or Ag paste is used in combination with both ends of the heating element and the current supply line. It is possible to directly connect to the electric current supply line 330 without using a connector for connection which reduces the electric resistance of the terminal contact portion.

2A and 2B are cross-sectional views illustrating metal coated carbon fibers for a hot wire of a vehicle according to FIG.

Referring to FIGS. 2A and 2B, the metal coated carbon fiber 100 for a hot wire includes at least one metal layer 120. The metal coated carbon fiber 100 for a hot wire is a single coated metal layer 120 comprising at least one metal or alloy selected from the group consisting of Ni, Ag, Al, Cu, and Cr, or Ni, Ag, Al, Cr and a plurality of metal layers 120 including at least one metal or alloy selected from the group consisting of Cr and Cr.

The plurality of metal layers 120 includes a first metal layer 122, a second metal layer 124, and a third metal layer 126. The first metal layer 122 is coated on the carbon fibers 110 divided by strands by physical vapor deposition. A second metal layer 124 is coated over the deposited first metal layer 122 by physical vapor deposition. A third metal layer 126 is coated over the deposited second metal layer 124 by physical vapor deposition.

In one embodiment, the metal-coated carbon fiber 100 for a hot wire of a vehicle may be formed by thermal evaporation deposition, sputtering, or the like in a physical vapor deposition process, using one or more metals or alloys selected from the group consisting of Ni, Ag, Al, Cu, A single or a plurality of coating metal layers 120 deposited by one method such as sputtering deposition and atomic layer deposition (ALD). The metal coated carbon fibers 100 may comprise a single coated metal layer 120 comprised of one metal or alloy or may comprise a plurality of coated metal layers 120 comprised of one or more metals or alloys. The plurality of coated metal layers 120 may include a first metal layer 122, a second metal layer 124, and a third metal layer 126. The metal coated carbon fiber 100 for a vehicle hot wire includes a plurality of coating layers 120 in which Ni is deposited on the first coating layer 122, Cu is deposited on the second coating layer 124, and Ni is physically deposited on the third coating layer 126 can do.

In one embodiment, the first metal layer 122 may comprise one or more metals or alloys selected from the group consisting of Ni, Ag, Al, and Cr. The first metal layer 122 may be coated to a thickness of 20 to 200 nm through direct contact with the spread carbon fibers 110.

In one embodiment, the second metal layer 124 may comprise one or more metals or alloys selected from the group consisting of Cu, Al and Ag. The second metal layer 124 may be sequentially coated on the deposited first metal layer 122 to a thickness of 50 to 800 nm.

In one embodiment, the third metal layer 126 may comprise one or more metals or alloys selected from the group consisting of Cu, Al, and Ag. The third metal layer 126 may be sequentially coated on the deposited second metal layer 124 to a thickness of 20 to 200 nm.

FIG. 3 is a view showing a heat ray for a vehicle including metal coated carbon fibers for a vehicle hot wire according to FIG. 1, and FIG. 4 is a sectional view showing an AA 'section of a heat ray for a vehicle including metal coated carbon fibers for a hot wire .

3 and 4, a heating wire 300 for a vehicle includes metal-coated carbon fibers 100, one or more heat-conductive insulating sheets 310a and 310b, an adhesive layer 320, and an electric current supply line 330 ).

The thermally conductive insulating sheets 310a and 310b are formed of at least one metal coated carbon fiber 100 for a vehicle hot wire and an adhesive layer 320 for fixing the metal coated carbon fiber 100 for a hot wire . The metal coated carbon fibers 100 for at least one vehicle hot wire form a pattern comprising a curve and a straight line. The current supply line 330 is connected to both ends of the metal coated carbon fiber 100 for the hot wire of the vehicle to supply current. The metal coated carbon fiber 100 for a hot wire of the vehicle generates heat due to the electric current supplied to the electric current supply line 330.

In one embodiment, the thermally conductive insulating sheets 310a and 310b may include an adhesive layer 320. [ The thermally conductive insulating sheets 310a and 310b may include a pattern of metal-coated carbon fibers 100 for one or more heating wires covering both sides. The adhesive layer 320 may fix and bond the pattern of the metal coated carbon fibers 100 for the hot wire to the inside of the thermally conductive insulating sheets 310a and 310b. The thermally conductive insulating sheets 310a and 310b may include a flame retardant nonwoven fabric and a flame retardant fabric material. The thermally conductive insulating sheets 310a and 310b can fix the patterns of the metal coated carbon fibers 100 for the hot wire of the vehicle through the adhesive layer 320 and the staple.

In one embodiment, the metal-coated carbon fibers 100 for one or more hot-wire lines can be arranged and arranged in a pattern that is denser than a hot line for a vehicle using conventional hot-wire, and can be evenly distributed to the thermally-conductive insulating sheets 310a and 310b. The heating wire 300 for a vehicle can have a uniform thermal distribution due to the tightly arranged and even distribution of the metal coated carbon fibers 100 for heating the vehicle. The amount of heat generated by the areas of the thermally conductive insulating sheets 310a and 310b can be uniformly maintained through the pattern of the metal coated carbon fibers 100 for the hot wire of the vehicle.

In one embodiment, the metal coated carbon fibers 100 for one or more heating wires can connect the current supply lines 330 to both ends. The metal coated carbon fiber 100 for a vehicle hot wire has an Ag paste for lowering the electrical resistance due to at least one metal layer 120 coated with a physical layer coating method and lowering the contact resistance between the current supply line 330 and the terminal portion, The current supply line 330 may be directly connected to the power supply line 330 without performing a preprocessing process. The metal-coated carbon fibers 100 for a plurality of vehicle heating wires can be connected in series and in parallel with the electric current supply line 330.

In one embodiment, the heating wire 300 for a vehicle, which includes the metal coated carbon fiber 100 for a hot wire of a vehicle, is electrically connected to the metal coated carbon fiber 100 for vehicle hot wire by a normalized voltage and current supplied by the vehicle battery to the electric current supply line 330 ). The thermally conductive insulating sheets 310a and 310b may include through holes serving as venting holes to exhaust the wind generated by the vehicle ventilation seat. The thermally conductive insulating sheets 310a and 310b may be formed in a shape suitable for each seat frame to be combined with various types of seat frames of the vehicle.

FIG. 5 is a graph showing the temperature responsiveness of a heat ray for a vehicle including the metal coated carbon fiber for a hot wire for a vehicle according to the present invention, and FIG. 6 is a graph showing the temperature response of the metal coated carbon fiber for a hot wire And the response of the heating wire for the vehicle including the heating temperature is shown in the table as the temperature increase with the heating time.

5 and 6, the heat ray 300 for a vehicle including the metal coated carbon fiber 100 for a heat ray of a vehicle shows a higher degree of temperature change for the same time period as compared with a mass produced using a conventional metal wire.

The heating wire 300 shown in FIGS. 5 and 6 includes a plurality of metal layers 120 (see FIG. 5) formed by sequentially depositing Ni on the first coating layer 122, Cu on the second coating layer 124, and Ni on the third coating layer 126 Coated carbon fiber 100 for a vehicle hot wire. The automotive hot wire 300 comprising the metal coated carbon fibers 100 for the hot wire of the vehicle shows a temperature increase of 12 캜 for 4 minutes after operation and shows a temperature of 8 캜 for 4 minutes of the mass produced using conventional metal wires And a 50% increase in temperature over a period of 4 minutes compared to the increase.

Accordingly, the heat ray 300 for a vehicle including the metal coated carbon fiber 100 for a heat ray of a vehicle has a remarkable effect of shortening the preheating time as compared with a mass produced by using a conventional metal wire.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the following claims And changes may be made without departing from the spirit and scope of the invention.

100: Metal coated carbon fiber for hot wire
110: carbon fiber 120: metal layer
122: first metal layer 124: second metal layer
126: third metal layer
300: Hot wire for automobile
310a, 310b: thermally conductive insulating sheet 320: adhesive layer
330: Current supply line

Claims (13)

At least one carbon fiber spaced apart from each other; And
And a plurality of metal layers coating the metal on the at least one carbon fiber by physical vapor deposition (PVD) to reduce the electrical resistance formed by the at least one carbon fiber,
The plurality of metal layers
A first metal layer formed through physical vapor deposition of at least one metal or alloy selected from Ni, Ag, Al and Cr in a spreading state of the at least one carbon fiber;
A second metal layer formed on the first metal layer through physical vapor deposition of at least one metal or alloy selected from Cu, Al and Ag; And
And a third metal layer formed through physical vapor deposition of at least one metal or alloy selected from Ni, Al and Cr in the second metal layer.
delete delete The method of claim 1, wherein the first metal layer
Coated carbon fiber for vehicle hot wire, characterized in that the carbon fiber is directly contact-coated with the carbon fiber to a thickness of 20 to 200 nm.
delete delete The method of claim 1, wherein the second metal layer
Coated carbon fiber for a vehicle hot wire, wherein the first metal layer is sequentially coated with a thickness of 50 to 800 nm.
delete delete The method of claim 1, wherein the third metal layer
Wherein the metal coating layer is sequentially coated on the second metal layer to a thickness of 20 to 200 nm.
And a thermally conductive insulating sheet including a pattern of metal coated carbon fibers for a hot wire of a vehicle,
The metal-coated carbon fiber for the hot wire of the vehicle
At least one carbon fiber spaced apart from each other; And
A first metal layer formed through physical vapor deposition (PVD) of at least one metal or alloy selected from Ni, Al, and Cr in a spreading state of the at least one carbon fiber, and at least one metal selected from Cu and Al A second metal layer formed through physical vapor deposition (PVD) of a metal or alloy and reducing the electrical resistance formed by the at least one carbon fiber, and a second metal layer formed of at least one metal or alloy selected from Ni, Al, and Cr A plurality of metal layers including a third metal layer formed through physical vapor deposition (PVD)
Wherein the pattern is disposed along the inner circumference of the thermally conductive insulating sheet and is recessed toward the inside of the thermally conductive insulating sheet to be relatively closely formed.
12. The method of claim 11, wherein the metal coated carbon fibers
And is directly connected to the electric current supply line without a separate pretreatment for lowering the contact resistance at both ends thereof.
12. The method of claim 11, wherein the thermally conductive sheet
Wherein the metal-coated carbon fiber for vehicle heating wire is formed of a non-woven fabric in which both surfaces of the metal-coated carbon fiber for a vehicle hot wire are fixedly bonded to each other.

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