CN214068418U - Corrosion-resistant fireproof power cable for new energy automobile - Google Patents
Corrosion-resistant fireproof power cable for new energy automobile Download PDFInfo
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- CN214068418U CN214068418U CN202021561311.2U CN202021561311U CN214068418U CN 214068418 U CN214068418 U CN 214068418U CN 202021561311 U CN202021561311 U CN 202021561311U CN 214068418 U CN214068418 U CN 214068418U
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Abstract
The utility model discloses a corrosion-resistant fire prevention power cable for intelligent new energy automobile, including the cable core, the cable core by three insulation core and an auxiliary detection unit of being convenient for measuring module accurate collection real-time operating temperature transposition form; filling a filler formed by mixing inorganic magnesium oxide crystal powder and fireproof mud in a gap of the cable core, coating non-woven fabric outside the cable core, wrapping a heat-insulating fireproof inner protection pipe outside the non-woven fabric, wrapping an anti-corrosion semi-conductive buffering fireproof belt outside the heat-insulating fireproof inner protection pipe, arranging a braided copper wire shielding layer outside the anti-corrosion semi-conductive buffering fireproof belt, and extruding a pvc outer sheath outside the braided copper wire shielding layer; the utility model discloses it is good to have temperature measurement, fire behavior to thermal stability is good, chemical stability is stable, have higher mechanical strength, has improved the performance of cable.
Description
Technical Field
The utility model relates to a power cable field, concretely relates to corrosion-resistant fire prevention power cable for new energy automobile.
Background
As a new industry, national standards and industrial standards of new energy automobile cables do not exist in China, and no more enterprises for research and development and production of new energy automobile cables exist in China, and at present, part of high-end new energy automobile cables are mainly imported, so that the manufacturing cost is often high and the automobile production cost is directly influenced. The project group already has experience of producing and researching the automobile cable and a plurality of core technical achievements related to special cables, and the technical advantages make products of the company more prominent in performance compared with products of the same type. By means of the leading advantages in the technology and market dominance of products, the requirements of domestic automobile manufacturers are met by means of autonomous production, the gap of new energy automobile cable supply and demand in the domestic market is filled, and the use of most new energy automobile cables is met.
Therefore, the company develops an intelligent corrosion-resistant and fireproof power cable for the new energy automobile from multiple angles of temperature measurement, fire prevention, corrosion resistance and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a corrosion-resistant fire prevention power cable for new energy automobile just aims at solving above-mentioned problem.
The utility model discloses a corrosion-resistant fire prevention power cable for new energy automobile, including the cable core, the cable core by three insulation core and an auxiliary detection unit who is convenient for measuring module accurate collection real-time operating temperature transposition form; the cable comprises a cable core and is characterized in that a filler formed by mixing inorganic magnesium oxide crystal powder and fireproof mud is filled in a gap of the cable core, a non-woven fabric is coated outside the cable core, a heat-insulating fireproof inner protection pipe is wound outside the non-woven fabric, an anti-corrosion semi-conductive buffering fireproof belt is wound outside the heat-insulating fireproof inner protection pipe, a braided copper wire shielding layer is arranged outside the anti-corrosion semi-conductive buffering fireproof belt, and a PVC outer sheath is extruded outside the braided copper wire shielding layer.
In a further improvement, the auxiliary detection unit is arranged at the center of the three electric unit wire cores after being twisted.
The further improvement is that the insulated wire core is composed of a copper conductor, a crosslinked polyethylene insulating layer extruded outside the copper conductor and a shielding layer coated outside the crosslinked polyethylene insulating layer.
The improved structure is characterized in that the non-woven fabric is composed of an upper self-adhesive silica gel layer non-woven fabric, a middle silica gel soft layer and a bottom transparent protective film.
The shielding layer is further improved and is formed by weaving tinned copper wires with the monofilament diameter of 0.1 mm.
In a further improvement, the auxiliary detection unit is a temperature control optical fiber.
The further improvement is that the heat-insulating fireproof inner protection pipe is formed by weaving high-purity alkali-free glass fiber into a pipe, coating organic silica gel on the outer wall of the pipe and vulcanizing.
The anti-corrosion semi-conductive buffer fireproof belt comprises a non-woven fabric substrate layer, a semi-conductive layer, an anti-corrosion layer, aluminum foil glass fiber cloth and a buffer layer; the non-woven fabric substrate layer, the semi-conducting layer, the corrosion-resistant layer, the aluminum foil glass fiber cloth and the buffer layer are sequentially arranged.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. an auxiliary monitoring unit is added to meet the requirement of acquiring a cable temperature signal, a part of filling ropes is replaced by the auxiliary monitoring unit in the middle of a cable core according to the number and the structure of power supply units, the cable cabling wrapping roundness is not influenced, the working temperature of all the power supply units can be directly acquired, an alarm indication is sent out if any phase has a problem, a corresponding temperature acquisition module is added to a travelling computer, the whole-process temperature of a main power cable in a vehicle is monitored, and the life safety of all passengers is ensured;
2. the filling body 5 formed by mixing inorganic magnesium oxide crystal powder and fireproof mud is filled in the gap of the cable core, has no combustion-supporting medium (magnesium oxide melting point 2800 ℃), has high temperature resistance, fire resistance, explosion resistance and no combustion (can continuously operate for a long time at 250 ℃, and can operate for a short time of 30min at the limit state of 1000 ℃), and greatly increases the time for preventing the fire from spreading and better protects the normal work of the cable core when the filling body is combined with the fireproof mud to have good fire resistance, oil resistance, water resistance and corrosion resistance;
3. the heat-insulating fireproof inner protection pipe is formed by weaving high-purity alkali-free glass fibers into a pipe, coating organic silica gel on the outer wall of the pipe and performing vulcanization treatment, has strong chemical stability, does not react to oil, water, acid, alkali and other substances in organic silicon, can be used for a long time and is not aged within 260 ℃, the service life under the natural environment can reach dozens of years, cables in the occasions can be protected to the maximum extent, and the service life of the cables is greatly prolonged; because the surface is coated with the organic silica gel, the main chain is-Si-O-, and no double bonds exist, the organic silica gel is not easy to be decomposed by ultraviolet light and ozone; the insulating material has good electrical insulating property, the dielectric loss, the voltage resistance, the arc resistance, the corona resistance, the volume resistivity, the surface resistivity and the like of the insulating material are listed as the first place in the insulating material, and the electrical properties of the insulating material are slightly influenced by temperature and frequency.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the structure of a nonwoven fabric;
FIG. 3 is a schematic representation of the structure of an anti-corrosion semi-conductive damping fire belt.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1, the corrosion-resistant fireproof power cable for the new energy automobile comprises a cable core, wherein the cable core is formed by twisting three insulating wire cores and an auxiliary detection unit 1 which is convenient for a measurement module to accurately acquire real-time working temperature; the auxiliary detection unit is arranged at the center of the twisted three electric unit wire cores, an auxiliary monitoring unit is added to meet the requirement of acquiring a cable temperature signal, a part of filling ropes are replaced by the auxiliary monitoring units in the middle of the cable core according to the number and the structure of the power supply units, the wrapping roundness of cabling of the cable is not influenced, the working temperature of all the power supply units can be directly acquired, an alarm indication is sent out by a traveling crane computer if any problem occurs, a corresponding temperature acquisition module is added to the traveling crane computer, the whole-process temperature of the main power cable in the vehicle is monitored, and the life safety of all passengers is ensured; the insulated wire core is composed of a copper conductor 2, a crosslinked polyethylene insulating layer 3 extruded outside the copper conductor and a shielding layer 4 coated outside the crosslinked polyethylene insulating layer; the conductor is formed by twisting bare copper wires with the monofilament diameter of 0.20mm, the material can be continuously used for a long time at the temperature of 125 ℃, the resistivity is low, the price is moderate, and the use requirements of the electrical property and the environmental property of the cable are met; the cable is shielded by adopting a tinned copper wire weaving mode with the monofilament diameter of 0.1mm, the weaving density is more than or equal to 85 percent, and the thinner monofilaments and the larger weaving density enable the cable to have better anti-electromagnetic interference characteristic under the condition of not influencing the flexibility of the cable.
The filling body 5 formed by mixing inorganic magnesium oxide crystal powder and fireproof mud is filled in the gap of the cable core, has no combustion-supporting medium (magnesium oxide melting point 2800 ℃), has high temperature resistance, fire resistance, explosion resistance and no combustion (can continuously operate for a long time at 250 ℃, and can operate for a short time of 30min at the limit state of 1000 ℃), and greatly increases the time for preventing the fire from spreading and better protects the normal work of the cable core when the filling body is combined with the fireproof mud to have good fire resistance, oil resistance, water resistance and corrosion resistance; the cable core is coated with the non-woven fabric 6, the non-woven fabric is wrapped with the heat-insulating fireproof inner protection pipe 7, the heat-insulating fireproof inner protection pipe is firstly woven by high-purity alkali-free glass fiber into a pipe, and then the outer wall of the pipe is coated with organic silica gel and is vulcanized, so that the heat-insulating fireproof inner protection pipe has strong chemical stability, does not react to oil, acid, alkali and other substances in the organic silica gel, can be used for a long time within 260 ℃, is not aged, has a service life of dozens of years in a natural environment, can protect cables in the occasions to a large extent, and greatly prolongs the service life of the cables; because the surface is coated with the organic silica gel, the main chain is-Si-O-, and no double bonds exist, the organic silica gel is not easy to be decomposed by ultraviolet light and ozone; the insulating material has good electrical insulating property, the dielectric loss, the voltage resistance, the arc resistance, the corona resistance, the volume resistivity, the surface resistivity and the like of the insulating material are listed as the first place in the insulating material, and the electrical properties of the insulating material are slightly influenced by temperature and frequency; an anti-corrosion semi-conductive buffer fireproof belt 8 is wrapped outside the heat-insulation fireproof inner protection pipe, a braided copper wire shielding layer 9 is arranged outside the anti-corrosion semi-conductive buffer fireproof belt, and a pvc outer sheath 10 is extruded outside the braided copper wire shielding layer.
As shown in fig. 2, the non-woven fabric is formed by sequentially gluing an upper self-adhesive silica gel layer non-woven fabric 11, a middle silica gel soft layer 12 and a bottom transparent protective film 13, and the non-woven fabric has the advantages of good fireproof performance, good thermal stability, stable chemical property, higher mechanical strength and greatly improved cable performance;
as shown in fig. 3, the anti-corrosion semi-conductive buffer fireproof belt comprises a non-woven fabric substrate layer 14, a semi-conductive layer 15, a corrosion-resistant layer 16, an aluminum foil glass fiber cloth 17 and a buffer layer 18; the non-woven fabric substrate layer, the semi-conductive layer, the corrosion-resistant layer, the aluminum foil glass fiber cloth and the buffer layer are sequentially glued and compositely arranged, wherein the semi-conductive layer is made of a semi-conductive adhesive material, and the semi-conductive property of the semi-conductive adhesive material is utilized to play a role in buffering and homogenizing the electric field intensity of a cable core, so that the cable is effectively prevented from being broken down; the cable is also provided with the corrosion-resistant layer, and the corrosion-resistant layer can be a water-based corrosion-resistant adhesive layer and has excellent corrosion resistance and acid and alkali resistance, so that the corrosion-resistant protection effect can be achieved on the inside of the cable, and the service life of the cable can be prolonged; the non-woven fabrics substrate layer combines together with the fine cloth of aluminium foil glass, can be so that the cable has fire prevention fire behavior, and the buffer layer sets up in the outmost of fire prevention area, and the buffer layer can be along with the expend with heat and contract with cold and flexible change of sheath to play the effect of mechanical buffering.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.
Claims (8)
1. The corrosion-resistant fireproof power cable for the new energy automobile comprises a cable core, wherein the cable core is formed by twisting three insulating wire cores and an auxiliary detection unit which is convenient for a measurement module to accurately acquire real-time working temperature; the method is characterized in that: the cable comprises a cable core and is characterized in that a filler is filled in a gap of the cable core, non-woven fabric is coated outside the cable core, a heat-insulation fireproof inner protection pipe is wrapped outside the non-woven fabric, an anti-corrosion semi-conductive buffering fireproof belt is wrapped outside the heat-insulation fireproof inner protection pipe, a braided copper wire shielding layer is arranged outside the anti-corrosion semi-conductive buffering fireproof belt, and a PVC outer sheath is extruded outside the braided copper wire shielding layer.
2. The corrosion-resistant fireproof power cable for the new energy automobile according to claim 1, characterized in that: the auxiliary detection unit is arranged at the center of the three electric unit wire cores after being twisted.
3. The corrosion-resistant fireproof power cable for the new energy automobile according to claim 1, characterized in that: the insulated wire core is composed of a copper conductor, a crosslinked polyethylene insulating layer extruded outside the copper conductor and a shielding layer coated outside the crosslinked polyethylene insulating layer.
4. The corrosion-resistant fireproof power cable for the new energy automobile according to claim 1, characterized in that: the non-woven fabrics comprise an upper self-adhesive silica gel layer non-woven fabric, a middle silica gel soft layer and a bottom transparent protective film.
5. The corrosion-resistant fireproof power cable for the new energy automobile according to claim 3, wherein: the shielding layer is formed by weaving tinned copper wires with the monofilament diameter of 0.1 mm.
6. The corrosion-resistant fireproof power cable for the new energy automobile according to claim 1, characterized in that: the auxiliary detection unit is a temperature control optical fiber.
7. The corrosion-resistant fireproof power cable for the new energy automobile according to claim 1, characterized in that: the heat-insulating fireproof inner protection pipe is formed by weaving high-purity alkali-free glass fibers into a pipe, coating organic silica gel on the outer wall of the pipe and performing vulcanization treatment.
8. The corrosion-resistant fireproof power cable for the new energy automobile according to claim 1, characterized in that: the anti-corrosion semi-conductive buffer fireproof belt comprises a non-woven fabric substrate layer, a semi-conductive layer, an anti-corrosion layer, aluminum foil glass fiber cloth and a buffer layer; the non-woven fabric substrate layer, the semi-conducting layer, the corrosion-resistant layer, the aluminum foil glass fiber cloth and the buffer layer are sequentially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021561311.2U CN214068418U (en) | 2020-07-31 | 2020-07-31 | Corrosion-resistant fireproof power cable for new energy automobile |
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| CN202021561311.2U CN214068418U (en) | 2020-07-31 | 2020-07-31 | Corrosion-resistant fireproof power cable for new energy automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114496372A (en) * | 2022-03-10 | 2022-05-13 | 特变电工(德阳)电缆股份有限公司 | Fire-resistant cable, preparation method thereof and power transmission equipment |
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2020
- 2020-07-31 CN CN202021561311.2U patent/CN214068418U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114496372A (en) * | 2022-03-10 | 2022-05-13 | 特变电工(德阳)电缆股份有限公司 | Fire-resistant cable, preparation method thereof and power transmission equipment |
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