KR20160129555A - High voltage cable and method of Manufacturing the same - Google Patents

High voltage cable and method of Manufacturing the same Download PDF

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Publication number
KR20160129555A
KR20160129555A KR1020150061868A KR20150061868A KR20160129555A KR 20160129555 A KR20160129555 A KR 20160129555A KR 1020150061868 A KR1020150061868 A KR 1020150061868A KR 20150061868 A KR20150061868 A KR 20150061868A KR 20160129555 A KR20160129555 A KR 20160129555A
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KR
South Korea
Prior art keywords
shielding
shield
forming
resin
conductor
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KR1020150061868A
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Korean (ko)
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KR101783861B1 (en
Inventor
유문식
조대철
Original Assignee
주식회사 유라코퍼레이션
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Priority to KR1020150061868A priority Critical patent/KR101783861B1/en
Publication of KR20160129555A publication Critical patent/KR20160129555A/en
Application granted granted Critical
Publication of KR101783861B1 publication Critical patent/KR101783861B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • 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
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/028—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients with screen grounding means, e.g. drain wires

Abstract

The present invention provides a high voltage cable including: a conductive core which a current flows through; a first sheath unit which covers the conductive core and prevents the leakage of the current; a cover shield unit which covers the first sheath unit and is made of shield resins; a conductive line unit which is disposed on the cover shield unit in a longitudinal direction of the conductive core; and a second shield unit which covers the cover shield unit.

Description

TECHNICAL FIELD [0001] The present invention relates to a high voltage cable and a manufacturing method thereof,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a high-voltage cable and a method of manufacturing the same, and more particularly, to a high-voltage cable capable of shielding noise generated when a high-

Recently, automakers are interested in developing energy-efficient, fuel-efficient vehicles. However, since the fuel consumption is proportional to the weight of the allowance, it is important to reduce the weight or weight. Accordingly, weight reduction of the cable in the wiring harness which is a part of the entire length of the automobile can help improve the fuel efficiency. In addition to low-voltage cables, high-voltage cables are used in cars.

The high-voltage cable includes a braid formed by braiding a wire made of a metal such as copper into a fabric or mesh. At this time, the braid can be used as a means for grounding while shielding noise or electromagnetic waves generated in the cable and the outside.

Conventionally, a high-voltage cable uses a metal braid for shielding. However, when a metal material is used, there is a problem in that the weight is increased and the weight is reduced. In addition, the process of covering the high-voltage cable with the braid has a problem of reducing the productivity. In addition, the manufacturing cost of the braid was high, which was uneconomical.

Registration of Korea Utility Model No. 20-0418702 (Registered on June, 2006)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a high-voltage cable and a method of manufacturing the same that can reduce weight and cost by using a shielding resin.

It is another object of the present invention to provide a grounding means which can be press-connected to an additional terminal due to the nature of the shielding resin. In addition, in the method of manufacturing a high-voltage cable, a method of extruding a shielding resin to improve productivity.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a high-voltage cable including a conductor core through which current flows; A first covering portion surrounding the conductor core and preventing a current from leaking; A shielding shield portion surrounding the first shielding portion and formed of a shielding resin; A grounding portion formed at both ends of the shielding shield; And a second covering portion surrounding the shielding portion and the grounding portion.

The shielding resin may be formed by mixing a conductive additive with a plastic resin.

The conductive additive may be either metallic powder or carbon powder or may be used in combination.

The ground portion may be formed of any one selected from a braid and an aluminum wrap which are electrically connected to the shielding portion and are coupled to surround the first cover portion.

The ground portion may be fixedly coupled to surround the first cover portion with an adhesive.

Wherein the grounding portion comprises a conductor wire disposed on both outer circumferential surfaces of the shielding shield portion; And a fixing member for sealing the conductor line so that the conductor line is bonded to the shielding shield portion.

The fixing member is preferably a heat-shrinkable tube.

An embodiment of the present invention includes: providing a conductor core through which current flows; Extruding an insulating resin to form a first covering portion surrounding the conductor core; Forming a shielding portion to surround the first cover portion by extrusion molding a shielding resin; Forming a grounding portion at both ends of the shielding shield; And forming a second covering portion surrounding the shielding portion and the grounding portion by extrusion molding a plastic resin.

The step of forming the grounding portion may electrically connect any one of the braid and the aluminum wrap to the shielding shield portion and surround the first shielding portion.

Another embodiment of the present invention provides a method of manufacturing a semiconductor device, comprising: providing a conductor core through which current flows; Extruding an insulating resin to form a first covering portion surrounding the conductor core; Forming a shielding portion to surround the first cover portion by extrusion molding a shielding resin; Extruding a plastic resin to form a second covering portion surrounding the shielding portion; And forming a grounding portion in the shielding portion exposed after removing both ends of the second covering portion.

In the step of forming the grounding portion, the grounding portion may include a conductor line disposed on the outer circumferential surface of the shielding shield portion; And a heat shrinkable tube for sealing the conductor line so that the conductor line is bonded to the shielding shield portion.

The present invention by the above-mentioned problem solving means has the effect of realizing the weight of the product compared with the conventional high-voltage cable while exhibiting the same level of shielding effect. In addition, since part of the process can be replaced by extrusion, the working time can be reduced and the productivity can be further improved.

1 is a view showing a structure of a high-voltage cable according to a first embodiment of the present invention;
2 is a view showing a structure of a high-voltage cable according to a second embodiment of the present invention;
3 is a block diagram illustrating a method of manufacturing a high-voltage cable according to a first embodiment of the present invention
4 is a block diagram showing a method of manufacturing a high-voltage cable according to a second embodiment of the present invention

It should be understood that the specific details of the invention are set forth in the following description to provide a more thorough understanding of the present invention and that the present invention may be readily practiced without these specific details, It will be clear to those who have knowledge.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 to 3. FIG.

1 is a view showing a structure of a high-voltage cable 100 according to a first embodiment of the present invention. Referring to FIG. 1, a high voltage cable 100 includes a conductor core 10, a first covering portion 20, a shielding shield portion 30, a ground portion 40, and a second covering portion 60.

The conductor core 10 is disposed on the innermost side of the high-voltage cable 100 and is a circular metal wire through which current flows. At this time, the diameter of the conductor core 10 may vary depending on the magnitude of the current. For example, if fine current flows, a thin metal wire can be used. However, since the high voltage cable 100 according to the preferred embodiment of the present invention is manufactured for the purpose of flowing a high current, a metal wire having a relatively large diameter is used.

The first covering portion (20) surrounds the conductor core (10). A method of mainly extruding an insulating resin, and the like. That is, an insulating material is used to prevent the current flowing through the conductor core 10 from leaking to the outside. The first covering portion 20 is also used for protecting the conductor core 10.

The shielding shield portion (30) surrounds the first covering portion (20). The shielding shield portion 30 is formed to surround the first covering portion 20 by extruding the shielding resin. At this time, the shielding shield portion 30 may be formed as a thin film.

On the other hand, the shielding resin is formed by mixing the conductive additive with the plastic resin. In particular, the conductive additive may be either a metal powder or a carbon powder or may be used in combination. That is, the metal powder and the carbon powder may be mixed with each other at a certain ratio.

Therefore, the plastic resin can exhibit the shielding effect due to the conductive additive. As a result, it is possible to replace the conventional braid made of metal. That is, when the shielding resin is used, the high-voltage cable 100 can be reduced in weight.

The grounding portion (40) is formed at both ends of the shielding shield portion (30). That is, the shielding shield portion 30 is shorter than the length of the conductor core 10 due to the grounding portions 40 formed at both ends.

The grounding unit 40 is further disposed for the following reason. As described above, the shielding shield portion 30 is formed of a shielding resin. That is, after the shielding shield 30 is extrusion-molded, the shielding resin is hardened while the temperature of the shielding resin is lowered. As a result, when the pressure is applied, the shielding shield portion 30 can be broken.

Incidentally, the shielding shield portion 30 needs to be grounded. This is because the inner peripheral surface of the shielding shield portion 30 flows along the surface due to noise, electromagnetic waves or the like due to the high voltage current flowing through the conductor core 10. This is because, on the outer circumferential surface of the shielding shield portion 30, electromagnetic waves or the like generated by other electric parts or the like disposed around may flow along the surface.

That is, the shielding shield 30 only blocks noise and electromagnetic waves from passing through the shield shield 30, and can not remove noise or the like remaining on the inner and outer surfaces of the shield shield 30 separately.

In order to connect the conventional high-voltage cable 100 to the connector, the conductor core 10 is first connected to the terminal, and then the braid is further press-fitted using a separate compression ring (not shown).

However, when the shielding portion 30 of the present invention is pressed, breakage such as breakage may occur. Therefore, the grounding portion 40 is disposed at both ends of the shielding shield 30. According to the first preferred embodiment, the grounding portion 40 may be formed of any one selected from a braid and an aluminum wrap which are electrically connected to the shielding shield portion 30 and are coupled to surround the first covering portion 20 have.

That is, a braid used for conventional shielding can be used. As described above, the braid is formed of a metal material. An aluminum wrap may also be used. Aluminum is also excellent in conductivity.

Particularly, when using either the braid or the aluminum wrap, one end should be arranged to be connected to the shield shield 30. For this purpose, the braid or the aluminum wrap may be fixedly coupled to surround the first covering portion 20 by an adhesive means such as an adhesive.

On the other hand, the other end can be press-fitted into a connector (not shown) as in the prior art. As a result, a noise or the like flowing to the inner and outer peripheral surfaces of the shielding shield 30 can be formed to flow toward the ground.

When the grounding portion 40 is formed using any one of the braid and the aluminum wrap, the high-voltage cable 100 may be standardized into several types having a certain length. That is, the high-voltage cable 100 can not be cut and used. This is because the grounding portion 40 must be formed at both ends of the shielding shield 30.

The second covering portion (60) is formed to surround the shielding shield portion (30). In particular, the second covering portion 60 is formed to protect the high-voltage cable 100 from the outside.

2 is a view showing a structure of a high-voltage cable 100 according to a second embodiment of the present invention. Referring to FIG. 2, the high voltage cable 100 includes a conductor core 10, a first covering portion 20, a shielding shield portion 30, a ground portion 50, and a second covering portion 60. However, the conductor core 10, the first covering portion 20, the shielding shield portion 30 and the second covering portion 60 are given the same reference numerals as those described above, and a description thereof will be omitted.

However, the grounding unit 50 having different features will be described in detail. That is, the grounding portion 50 according to the second preferred embodiment of the present invention includes the conductor line 52 and the fixing member 54.

The conductor line 52 is disposed on the outer circumferential surfaces at both ends of the shielding shield 30. That is, a conductor wire 52 connected to both ends of the shielding shield 30 is used for grounding. At this time, at least one conductor line 52 may be used.

The conductor line 52 may be formed by covering the shielding portion 30 with a fixing member 54 for sealing the conductor line 52 so that the conductor line 52 can be joined to the shielding shield portion 30. [ For example, the fixing member 54 may be a heat-shrinkable tube or the like.

3 is a block diagram showing a method of manufacturing the high-voltage cable 100 according to the first embodiment of the present invention. Referring to FIG. 3, the method for manufacturing the high-voltage cable 100 includes the steps of providing the conductor core 10, forming the first covering portion 20, forming the shielding portion 30, (S40) forming a ground (40), and forming a second covering (60) (s50).

The step of providing the conductor core 10 includes preparing the conductor core 10 of a predetermined length and then inserting the conductor core 10 into the extrusion molding apparatus.

Then, the first covering portion 20 is formed by extruding the insulating resin to surround the conductor core 10. Then, a shielding resin is extrusion-molded to form the shielding portion 30 so as to surround the first covering portion 20.

Then, a grounding portion (40) is formed at both ends of the shielding shield portion (30). This step may electrically connect the selected one of the braid and the aluminum wrap to the shielding shield 30 and surround the first cover 20.

Next, a second covering portion 60 surrounding the shielding shield portion 30 and the grounding portion 40 is formed by extrusion molding a plastic resin. In this case, unlike the first covering portion 20, the second covering portion 60 has a purpose of protecting the inside of the high-voltage cable 100, and thus is not necessarily limited to the insulating resin.

4 is a block diagram showing a method of manufacturing a high-voltage cable according to a second embodiment of the present invention. Referring to FIG. 4, a method of manufacturing a high-voltage cable 100 includes a step (s10) of providing a conductor core 10 through which current flows, a step of forming a first covering portion (S30) of forming a shielding portion (30) so as to surround the first covering portion (20) by extrusion molding the shielding resin, a step (s30) of forming a shielding resin A step 40 of forming a second covering portion 60 surrounding the portion 30 and a grounding portion 40 are formed in the shielding shielding portion 30 exposed after removing both ends of the second covering portion 60 (S50).

Steps s10 to s30 are the same as those in the first embodiment described above, and a description thereof will be omitted.

The manufacturing method according to the second embodiment differs from the first embodiment in the order of forming the second covering portion 60 (s40) and forming the grounding portion 50 (s50) There is a difference.

This is because the high-voltage cable 100 according to the second embodiment is manufactured without the grounding portion 50 once. As a result, the high-voltage cable 100 can be manufactured regardless of the wire standard (length).

However, when actually used, the high voltage cable 100 is cut to a required length, and the second covering portions 60 at both ends are removed. Then, the grounding portion 50 can be formed on the shielding shield portion 30 to be exposed.

Specifically, in the step of forming the grounding part 50, the grounding part 50 is formed so that the conductor line 52 and the conductor line 52 disposed on the outer circumferential surface of the shielding shield part 30 are bonded to the shielding shield part 30 And a heat shrink tube 54 that seals the conductor line 52. At this time, the conductor line 52 and the heat-shrinkable tube 54 are as described above.

As described above, the manufacturing method of the high voltage cable 100 according to the preferred embodiment of the present invention can improve the productivity because the process part can be replaced by the extrusion molding, unlike the conventional method.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

10: conductor core 20:
30: shield shield portion 40, 50: ground portion
52: conductor wire 54: fixing member
60: second covering portion 100: high voltage cable

Claims (11)

A conductor core through which current flows;
A first covering portion surrounding the conductor core and preventing a current from leaking;
A shielding shield portion surrounding the first shielding portion and formed of a shielding resin;
A grounding portion formed at both ends of the shielding shield; And
And a second covering portion surrounding the shielding portion and the grounding portion.
The method according to claim 1,
Wherein the shielding resin is formed by mixing a conductive additive with a plastic resin.
3. The method of claim 2,
Wherein the conductive additive is either a metal powder or a carbon powder, or a mixture thereof.
2. The apparatus of claim 1, wherein the ground
A high voltage cable electrically connected to the shielding portion and formed of any one selected from a braid and an aluminum wrap which are coupled to surround the first cover portion.
5. The method of claim 4,
Wherein the ground portion is fixedly coupled to the first cover portion by an adhesive.
2. The apparatus of claim 1, wherein the ground
A conductor wire disposed on both outer peripheral surfaces of the shielding shield; And
And a fixing member for sealing the conductor line so that the conductor line is bonded to the shielding shield portion.
The method according to claim 6,
Wherein the fixing member is a heat shrinkable tube.
Providing a conductor core through which current flows;
Extruding an insulating resin to form a first covering portion surrounding the conductor core;
Forming a shielding portion to surround the first cover portion by extrusion molding a shielding resin;
Forming a grounding portion at both ends of the shielding shield; And
Forming a shielding shield portion and a second cover portion surrounding the grounding portion by extrusion molding a plastic resin.
9. The method of claim 8, wherein forming the ground comprises:
Wherein the first cover is electrically connected to the shielding portion, and the first cover is surrounded by the first cover.
Providing a conductor core through which current flows;
Extruding an insulating resin to form a first covering portion surrounding the conductor core;
Forming a shielding portion to surround the first cover portion by extrusion molding a shielding resin;
Extruding a plastic resin to form a second covering portion surrounding the shielding portion; And
And forming a grounding portion in the shielding portion exposed after removing both ends of the second covering portion.
11. The method of claim 10, wherein forming the ground
The ground
A conductive wire disposed on an outer circumferential surface of the shielding shield; And
And a heat-shrinkable tube for sealing the conductor line so that the conductor line is bonded to the shielding portion.
KR1020150061868A 2015-04-30 2015-04-30 High voltage cable and method of Manufacturing the same KR101783861B1 (en)

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KR1020150061868A KR101783861B1 (en) 2015-04-30 2015-04-30 High voltage cable and method of Manufacturing the same

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Application Number Priority Date Filing Date Title
KR1020150061868A KR101783861B1 (en) 2015-04-30 2015-04-30 High voltage cable and method of Manufacturing the same

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KR20160129555A true KR20160129555A (en) 2016-11-09
KR101783861B1 KR101783861B1 (en) 2017-10-10

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200418702Y1 (en) 2006-03-27 2006-06-14 경신공업 주식회사 a high-voltage cable

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6246006B1 (en) * 1998-05-01 2001-06-12 Commscope Properties, Llc Shielded cable and method of making same
KR100725287B1 (en) * 2005-07-28 2007-06-07 엘에스전선 주식회사 UTP cable for transmitting high frequency signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200418702Y1 (en) 2006-03-27 2006-06-14 경신공업 주식회사 a high-voltage cable

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