CN215731026U

CN215731026U - New energy automobile charges and discharges and uses high temperature resistant cable

Info

Publication number: CN215731026U
Application number: CN202121980697.5U
Authority: CN
Inventors: 曾旭; 马辽林; 任智颖; 姚文忠
Original assignee: Hunan Valin Wire and Cable Co Ltd
Current assignee: Hunan Valin Wire and Cable Co Ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-02-01
Anticipated expiration: 2031-08-23

Abstract

The utility model discloses a high-temperature-resistant cable for charging and discharging of a new energy automobile, which comprises a cable core, wherein the cable core comprises three power wire cores and a heat dissipation guide pipe, each power wire core comprises a conductor, an insulating layer extruded outside the conductor, an inner shielding layer wound outside the insulating layer and a metal shielding layer woven outside the inner shielding layer, the heat dissipation guide pipe is made of silicon rubber, foamed silicon rubber is filled in the heat dissipation guide pipe, an outer protective layer and a heat insulation layer are arranged outside the cable core, the outer protective layer is extruded outside the cable core, and the heat insulation layer is made of ceramic fiber yarns and woven outside the outer protective layer. The corrosion resistance and high temperature resistance of the cable are improved.

Description

New energy automobile charges and discharges and uses high temperature resistant cable

Technical Field

The utility model relates to the field of special cables, in particular to a high-temperature-resistant cable for charging and discharging of a new energy automobile.

Background

With the rapid development of new energy electric vehicles, the demand for cables for new energy electric vehicles has increased significantly and higher requirements for high temperature resistance and corrosion resistance of the cables have been made. The cable for the new energy automobile needs to cope with a complex working environment in the new energy automobile. In actual use, the working environment of the cable sometimes exceeds 125 ℃, so that the high-temperature tolerance of the cable is insufficient, vehicle faults are easily caused, and the cable is improved to reach 150 ℃; in addition, the new energy automobile cable is charged and discharged by a lithium battery, and may be corroded by a battery electrolyte, so that the surface corrosion and even the corrosion of a copper conductor are caused, and the electrolyte resistance is also required by the new energy automobile cable. In the design process of the new energy electric vehicle cable, the characteristics of heat resistance, cold resistance and the like of the electric vehicle charging cable are mainly guaranteed, and the normal work of the electric vehicle charging cable in various complex environments can be guaranteed only in this way.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-temperature-resistant cable for charging and discharging of a new energy automobile, so as to improve the corrosion resistance and high-temperature resistance of the cable.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a new energy automobile charge-discharge is with high temperature resistant cable, includes the cable core, the cable core includes three power sinle silks and a heat dissipation pipe, the power sinle silk includes conductor, crowded package in the outer insulating layer of conductor and around the internal shield layer of covering outside the insulating layer and weave the metallic shield outside the internal shield layer, the heat dissipation pipe adopts silicon rubber to make, the heat dissipation pipe intussuseption is filled with the foam silicone rubber layer, outer jacket and the insulating layer of being provided with of cable core, the crowded package of outer jacket is outside the cable core, the insulating layer is ceramic fiber silk, and it weaves outside the outer jacket.

As a further improvement of the above technical solution:

the insulating layer is extruded by adopting flame-retardant hydrofluoric acid-resistant high-tear-resistance silicon rubber, and the minimum thickness of the extruded part is 1 mm. Orange in color and 10kV spark test voltage.

The inner shielding layer is wrapped by aluminum-plastic composite film wrapping tapes, the aluminum surface faces outwards, and the wrapping overlapping rate is not less than 20%. The width of the wrapping tape is preferably 20-30 mm.

The metal shielding layer is woven by tinned copper wires, and the weaving density is required to be not lower than 85%.

The cable core is wrapped with a non-woven fabric layer, and the wrapping overlapping rate is 15% -20%.

The outer protective layer is extruded by hydrofluoric acid-resistant high-tear-resistance silicon rubber, and the ovality of the extruded bag is not more than 8%.

The cable core is formed by twisting three power wire cores and a heat dissipation guide pipe, and the cable core is filled with a flame-retardant PP filling rope during twisting.

Compared with the prior art, the utility model has the beneficial effects that:

the insulation layer of the high-temperature-resistant cable for charging and discharging of the new energy automobile adopts the flame-retardant hydrofluoric acid-resistant silicon rubber, and the silicon rubber insulation layer can effectively resist flame and has electrolyte resistance and high-temperature performance, so that the temperature range of safe operation of the cable is-40-200 ℃, and the service life of the cable is longer. The aluminum-plastic composite belt and the copper wire are woven to form composite shielding, and the composite belt wrapping layer can effectively reflect low-frequency electromagnetic waves. The aluminum-plastic belt and the copper wire are in weaving cooperation, so that electromagnetic waves of various frequencies can be effectively shielded, and a good shielding effect is achieved. The heat dissipation conduit is twisted with the power wire core, so that heat generated by the power wire core can be timely discharged, the power wire core is kept at high current-carrying capacity when being electrified, meanwhile, the thermal aging of materials is prevented, and the service life of insulating and sheath materials can be prolonged. The outer jacket adopts special hydrofluoric acid-resistant high-tear-resistance silicon rubber for the automobile wire, provides good mechanical protection effect (wear resistance and tear resistance) for the cable, and has excellent flame retardance and high temperature resistance. The ceramic fiber thermal insulation layer is made of refractory materials and has the advantages of light weight, high temperature resistance, good thermal stability, low thermal conductivity and the like. The ceramic fiber braided heat-insulating layer enables the cable to well maintain the function under the conditions of high external temperature and flame.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Reference numerals: 1. a power wire core; 2. a heat dissipation conduit; 3. an outer jacket; 4. a thermal insulation layer; 5. a PP filling rope; 11. a conductor; 12. an insulating layer; 13. an inner shield layer; 14. a metal shielding layer; 21. a foamed silicone rubber layer.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the high temperature resistant cable for charging and discharging of the new energy automobile of this embodiment, including the cable core, the cable core includes three power sinle silk 1 and a heat dissipation pipe 2, power sinle silk 1 includes conductor 11, crowded package is in insulating layer 12 outside conductor 11 and around package in insulating layer 12 outside internal shield layer 13 and weave in the external metal shielding layer 14 of internal shield layer 13, heat dissipation pipe 2 adopts silicon rubber to make, heat dissipation pipe 2 intussuseption is filled with foaming silicon rubber layer 21, the cable core is provided with outer jacket 3 and insulating layer 4 outward, outer jacket 3 crowded package is outside the cable core, insulating layer 4 is ceramic fiber silk, it weaves outside outer jacket 3. The cable core is added with a heat radiation conduit 2 and a ceramic fiber heat insulation layer 4 is woven outside the silicon rubber outer protective layer 3. The ceramic fiber thermal insulation layer 4 is made of refractory material and has the advantages of light weight, high temperature resistance, good thermal stability, low thermal conductivity and the like. The cable can also well maintain the function under the high external temperature and the flame. The heat dissipation conduit can timely discharge heat generated by the power wire core.

The insulating layer 12 is extruded by adopting flame-retardant hydrofluoric acid-resistant high-tear-resistance silicon rubber, and the minimum thickness of the extruded part is 1 mm.

The inner shielding layer 13 is wrapped by aluminum-plastic composite film wrapping tape, the aluminum surface faces outwards, and the wrapping overlapping rate is not less than 20%.

The metal shielding layer 14 is braided by using tinned copper wires, and the braiding density is required to be not less than 85%.

The non-woven fabric layer is wound and wrapped outside the cable core, and the wrapping overlapping rate is 15% -20%.

The outer protective layer 3 is extruded by hydrofluoric acid resistant high-tear-resistance silicon rubber, and the ovality of the extruded bag is not more than 8%.

The cable core is formed by twisting three power wire cores 1 and a heat dissipation guide pipe 2, and a flame-retardant PP filling rope 5 is filled in the twisting process. The PP filling rope 5 can be rounded by filling, and meanwhile, the cable has good tensile and flame retardant properties.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a new energy automobile charge-discharge is with high temperature resistant cable, includes the cable core, its characterized in that: the cable core includes three power sinle silks (1) and a heat dissipation pipe (2), power sinle silk (1) include conductor (11), crowded package in conductor (11) outer insulating layer (12) and around package in insulating layer (12) outer internal shield layer (13) and weave in external metallic shield (14) of internal shield layer (13), heat dissipation pipe (2) adopt silicon rubber to make, heat dissipation pipe (2) intussuseption is filled with foaming silicon rubber layer (21), the cable core is provided with outer jacket (3) and insulating layer (4) outward, outer jacket (3) are crowded package outside the cable core, insulating layer (4) are ceramic fiber silk, and it weaves outside outer jacket (3).

2. The high-temperature-resistant cable for charging and discharging of the new energy automobile according to claim 1, characterized in that: the insulating layer (12) is extruded by adopting flame-retardant hydrofluoric acid-resistant high-tear-resistance silicon rubber, and the minimum thickness of the extruded part is 1 mm.

3. The high-temperature-resistant cable for charging and discharging of the new energy automobile according to claim 2, characterized in that: the inner shielding layer (13) is wrapped by an aluminum-plastic composite film wrapping tape, the aluminum surface faces outwards, and the wrapping overlapping rate is not less than 20%.

4. The high-temperature-resistant cable for charging and discharging of the new energy automobile according to claim 3, characterized in that: the metal shielding layer (14) is braided by adopting tinned copper wires, and the braiding density is required to be not less than 85%.

5. The high-temperature-resistant cable for charging and discharging of the new energy automobile according to claim 4, characterized in that: the cable core is formed by twisting three power wire cores (1) and a heat dissipation guide pipe (2), and a flame-retardant PP filling rope (5) is filled in the twisted cable core.

6. The high-temperature-resistant cable for charging and discharging of the new energy automobile according to claim 5, characterized in that: the cable core is wrapped with a non-woven fabric layer, and the wrapping overlapping rate is 15% -20%.

7. The high-temperature-resistant cable for charging and discharging of the new energy automobile according to claim 6, characterized in that: the outer protective layer (3) is wrapped by hydrofluoric acid resistant high-tear-resistance silicon rubber in an extruded mode, and the ovality of the wrapped package is not larger than 8%.