Photovoltaic light alloy conductor and cable preparation process

Abstract

The invention relates to a photovoltaic light alloy conductor and cable preparation technology, and belongs to the technical field of photovoltaic light alloy conductor cable preparation, and the light alloy conductor comprises the following components by mass: 0.04%-0.06% of silicon Si, 0.3%-0.5% of iron Fe, 0.2%-0.4% of copper Cu, 0.15%-0.3% of zirconium Zr, 0.08%-0.1% of niobium Nb, 0.04%-0.06% of barium Ba, 0.15%-0.5% of germanium Ge, 0.15% of impurity weight, and the balance of light alloy. According to the photovoltaic light alloy conductor and cable preparation process, the tensile strength and wear resistance can be effectively improved by adding silicon Si, the corrosion and oxidation performance of the conductor due to the external environment can be reduced when the conductor works in the external environment for a long time by adding iron Fe, copper Cu, zirconium Zr, niobium Nb and barium Ba, and the corrosion resistance and oxidation resistance of the conductor due to the external environment can be improved by adding germanium Ge. And the use stability of the conductor cable in different temperature environments can be enhanced, so that the corrosion resistance, the oxidation resistance, the temperature stability and the pulling strength of the light alloy conductor cable can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic light alloy conductor cable preparation, and specifically to a photovoltaic light alloy conductor and cable preparation process. Background Art

[0002] Photovoltaic light alloy conductor is a conductive material specially designed for photovoltaic power generation system. It is mainly used to transmit electricity generated by solar panels. In order to reduce the weight of photovoltaic system and reduce installation and maintenance costs, light alloy conductor is usually made of lightweight materials such as aluminum or aluminum alloy. With the rapid development of new energy, solar photovoltaic cables are also developing at a high speed. Photovoltaic cables are mainly used for power transmission and signal transmission between solar energy collection and application equipment. Therefore, photovoltaic cables are in a special environment for a long time. Not only are there high requirements for the external sheath of the cable, but the demand for conductors for photovoltaic cables is also gradually increasing.

[0003] Since photovoltaic equipment is exposed to the outdoors for a long time, the conductor cables used in photovoltaic equipment are also used outdoors for a long time. The conductor cables are easily corroded or oxidized in the external environment, or damaged by external wind pulling. As a result, the working efficiency of the conductor cables decreases as the use time increases, which will affect the transmission of photovoltaic equipment. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a process for preparing light alloy conductors and cables for photovoltaic use, which have the advantages of being less susceptible to oxidation corrosion and solves the problem of easy oxidation corrosion.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a process for preparing a light alloy conductor and cable for photovoltaic use, wherein the light aluminum alloy conductor comprises the following components in mass percentage: silicon Si: 0.04%-0.06%, iron Fe: 0.3%-0.5%, copper Cu: 0.2%-0.4%, zirconium Zr: 0.15%-0.3%, niobium Nb: 0.08%-0.1%, barium Ba: 0.04%-0.06%, germanium Ge: 0.15%-0.5%, the weight of impurities is 0.15%, and the balance is light alloy.

[0006] Furthermore, the light aluminum alloy conductor comprises the following components in percentage by mass: silicon Si: 0.04%, iron Fe: 0.3%, copper Cu: 0.2%, zirconium Zr: 0.15%, niobium Nb: 0.08%, barium Ba: 0.04%, germanium Ge: 0.15%, impurities weigh 0.15%, and the remainder is light alloy.

[0007] Furthermore, the light aluminum alloy conductor comprises the following components in mass percentage: silicon Si: 0.05%, iron Fe: 0.4%, copper Cu: 0.3%, zirconium Zr: 0.2%, niobium Nb: 0.09%, barium Ba: 0.05%, germanium Ge: 0.35%, impurities weigh 0.15%, and the balance is light alloy.

[0008] Furthermore, the light aluminum alloy conductor comprises the following components in mass percentage: silicon Si: 0.06%, iron Fe: 0.5%, copper Cu: 0.4%, zirconium Zr: 0.3%, niobium Nb: 0.1%, barium Ba: 0.06%, germanium Ge: 0.5%, impurities weigh 0.15%, and the balance is light alloy.

[0009] Furthermore, the light alloy is formed by twisting light alloy wires with a diameter of 0.2-0.5MM.

[0010] Furthermore, the tensile strength of the light alloy monofilament is 140Pa-300Pa, and the yield strength of the light alloy monofilament is 115PA-260PA.

[0011] Furthermore, the elongation is ≥15%, and the resistivity is 0.1 μΩ.m-1 μΩ·m.

[0012] A process for preparing a photovoltaic light alloy conductor and cable comprises the following steps:

[0013] 1) melting the light alloy block in a furnace at a temperature of 700°C-780°C to obtain a light alloy liquid;

[0014] 2) Add silicon Si, iron Fe, copper Cu, zirconium Zr, niobium Nb, barium Ba, and germanium Ge into the light alloy liquid, and use a stirrer to evenly stir them in the light alloy liquid;

[0015] 3) Continue to add sodium-free refining agent into the interior, the ratio of sodium-free refining agent to light aluminum alloy liquid is 0.3:100, and use a stirrer to evenly mix the sodium-free refining agent and the light aluminum alloy liquid, and then put it into a smelting furnace for smelting;

[0016] 4) A light alloy solution is obtained by the operation methods of 1), 2) and 3), which is filtered and poured into a casting machine to be cast into a light aluminum nugget, and then placed in a water tank for cooling;

[0017] 5) The light aluminum nugget obtained by (4) is cooled and subjected to a rolling process, whereby a rolling mill rolls the light aluminum nugget into a light alloy rod;

[0018] 6) The light alloy rod is obtained by the operation method of 5), and the light alloy rod is subjected to wire drawing by a wire drawing machine to be drawn into an aluminum alloy single wire with a diameter of 0.2-0.5MM;

[0019] 7) The plurality of light alloy monofilaments with a diameter of 0.2-0.5 mm obtained by the operation method of step 6 are twisted together to form a circular compact light aluminum alloy conductor by twisting in the same direction;

[0020] 8) A light aluminum alloy conductor is obtained by the operation method of 7), and a layer of rubber insulation sheath is wrapped on the surface of the light aluminum alloy conductor by using an extruder to obtain a light alloy conductor cable.

[0021] Furthermore, during the smelting in step 4), the smelting temperature and smelting time can be controlled and adjusted according to actual conditions.

[0022] Furthermore, during the cooling step 5), the cooling temperature and cooling time can be controlled and adjusted according to the actual situation.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] The process for preparing light alloy conductors and cables for photovoltaic use can enhance the electrical conductivity, thermal conductivity (effectively ensuring thermal stability and heat resistance), hardness and strength (effectively improving tensile strength and wear resistance) of light alloy conductor cables by adding silicon Si, enhance corrosion resistance by adding iron Fe, and effectively prevent corrosion by water, oxygen, chemicals, etc., enhance wear and corrosion resistance while preventing oxidation by adding copper Cu, as well as elongation and toughness, enhance wear and corrosion resistance and heat resistance by adding zirconium Zr, so as to ensure temperature resistance when working at high temperature, enhance tensile and wear and corrosion resistance by adding niobium Nb, and ensure stability in humid or corrosive environments by adding barium Ba, thereby effectively improving the corrosion resistance and oxidation resistance of the light alloy conductor, as well as tensile resistance, and effectively extending its service life. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Embodiment 1: A light alloy conductor for photovoltaics, the light aluminum alloy conductor comprises the following components in mass percentage: silicon Si: 0.04%, iron Fe: 0.3%, copper Cu: 0.2%, zirconium Zr: 0.15%, niobium Nb: 0.08%, barium Ba: 0.04%, germanium Ge: 0.15%, impurity weight is 0.15%, and the balance is light alloy.

[0027] Among them, the light alloy is made of light alloy wires with a diameter of 0.2MM.

[0028] In addition, the tensile strength of the light alloy monofilament is 140pa, and the yield strength of the light alloy monofilament is 115papa, which can effectively enhance the pulling strength of the conductor cable so as to reduce the damage caused by external wind.

[0029] In addition, the elongation is ≥15%, and the resistivity is 0.1μΩ.m, which can enhance the elongation of the conductor cable while ensuring the stability of its resistivity.

[0030] A process for preparing a photovoltaic light alloy conductor cable comprises the following steps:

[0031] 1) placing the light alloy block in a furnace and controlling the temperature at 700° C. to obtain a light alloy liquid;

[0032] 2) Add 0.04% silicon Si, 0.3% iron Fe, 0.2% copper Cu, 0.15% zirconium Zr, 0.08% niobium Nb, 0.04% barium Ba, and 0.15% germanium Ge into the light alloy liquid, and use a stirrer to evenly stir them into the light alloy liquid;

[0033] 3) Continue to add sodium-free refining agent into the interior, the ratio of sodium-free refining agent to light aluminum alloy liquid is 0.3:100, and use a stirrer to evenly mix the sodium-free refining agent and the light aluminum alloy liquid, and then put it into a smelting furnace for smelting;

[0034] 4) A light alloy solution is obtained by the operation methods of 1), 2) and 3), which is filtered and poured into a casting machine to be cast into a light aluminum nugget, and then placed in a water tank for cooling;

[0035] 5) The light aluminum nugget obtained by (4) is cooled and subjected to a rolling process, whereby a rolling mill rolls the light aluminum nugget into a light alloy rod;

[0036] 6) The light alloy rod is obtained by the operation method of 5), and the light alloy rod is subjected to wire drawing by a wire drawing machine to be drawn into an aluminum alloy single wire with a diameter of 0.2 mm;

[0037] 7) The plurality of light alloy monofilaments with a diameter of 0.2 mm obtained by the operation method of step 6 are twisted together to form a circular, compacted light aluminum alloy conductor by twisting in the same direction;

[0038] 8) A light aluminum alloy conductor is obtained by the operation method of 7), and a layer of rubber insulation sheath is wrapped on the surface of the light aluminum alloy conductor by using an extruder to obtain a light alloy conductor cable.

[0039] Secondly, during the smelting in step 4), the smelting temperature and smelting time can be controlled and adjusted according to the actual situation so as to be able to be controlled in time according to the actual situation.

[0040] Furthermore, during cooling in step 5), the cooling temperature and cooling time can be controlled and adjusted according to actual conditions, so as to be able to be controlled in time according to actual conditions.

[0041] Experiments have shown that the addition of silicon Si can effectively improve the tensile strength and wear resistance, and the addition of iron Fe, copper Cu, zirconium Zr, niobium Nb and barium Ba can effectively enhance the corrosion resistance and oxidation performance of light alloy conductor cables, so that when they work for a long time in the external environment, they can reduce the corrosion and oxidation performance caused by the external environment, so as to further improve the service life of the conductor cables. The addition of germanium Ge can enhance the stability of the conductor cables in different temperature environments, so it can effectively improve the corrosion resistance, oxidation and temperature stability and tensile strength of the light alloy conductor cables.

[0042] Embodiment 2: A light alloy conductor for photovoltaics, the light aluminum alloy conductor comprises the following components in mass percentage: the light aluminum alloy conductor comprises the following components in mass percentage: silicon Si: 0.05%, iron Fe: 0.4%, copper Cu: 0.3%, zirconium Zr: 0.2%, niobium Nb: 0.09%, barium Ba: 0.05%, germanium Ge: 0.35%, the impurity weight is 0.15%, and the balance is light alloy.

[0043] Among them, the light alloy is made of light alloy wires with a diameter of 0.35MM.

[0044] In addition, the tensile strength of the light alloy monofilament is 220pa, and the yield strength of the light alloy monofilament is 220PA, which can effectively enhance the pulling strength of the conductor cable so as to reduce the damage caused by external wind force.

[0045] In addition, the elongation is ≥15%, and the resistivity is 0.55μΩ·m, which can enhance the elongation of the conductor cable while ensuring the stability of its resistivity.

[0046] A process for preparing a photovoltaic light alloy conductor cable comprises the following steps:

[0047] 1) melting the light alloy block in a furnace at a temperature of 700°C-780°C to obtain a light alloy liquid;

[0048] 2) Add silicon Si, iron Fe, copper Cu, zirconium Zr, niobium Nb, barium Ba, and germanium Ge into the light alloy liquid, and use a stirrer to evenly stir them in the light alloy liquid;

[0049] 3) Continue to add sodium-free refining agent into the interior, the ratio of sodium-free refining agent to light aluminum alloy liquid is 0.3:100, and use a stirrer to evenly mix the sodium-free refining agent and the light aluminum alloy liquid, and then put it into a smelting furnace for smelting;

[0050] 4) A light alloy solution is obtained by the operation methods of 1), 2) and 3), which is filtered and poured into a casting machine to be cast into a light aluminum nugget, and then placed in a water tank for cooling;

[0051] 5) The light aluminum nugget obtained by (4) is cooled and subjected to a rolling process, whereby a rolling mill rolls the light aluminum nugget into a light alloy rod;

[0052] 6) The light alloy rod is obtained by the operation method of 5), and the light alloy rod is subjected to wire drawing by a wire drawing machine to be drawn into an aluminum alloy single wire with a diameter of 0.35 mm;

[0053] 7) The plurality of light alloy monofilaments with a diameter of 0.35 mm obtained by the operation method of step 6 are twisted together to form a circular compact light aluminum alloy conductor by twisting in the same direction;

[0054] 8) A light aluminum alloy conductor is obtained by the operation method of 7), and a layer of rubber insulation sheath is wrapped on the surface of the light aluminum alloy conductor by using an extruder to obtain a light alloy conductor cable.

[0055] Secondly, during the smelting in step 4), the smelting temperature and smelting time can be controlled and adjusted according to the actual situation so as to be able to be controlled in time according to the actual situation.

[0056] Furthermore, during cooling in step 5), the cooling temperature and cooling time can be controlled and adjusted according to actual conditions, so as to be able to be controlled in time according to actual conditions.

[0057] Experiments have shown that the addition of silicon Si can effectively improve the tensile strength and wear resistance, and the addition of iron Fe, copper Cu, zirconium Zr, niobium Nb and barium Ba can effectively enhance the corrosion resistance and oxidation performance of light alloy conductor cables, so that when they work in the external environment for a long time, they can reduce the corrosion and oxidation performance caused by the external environment, so as to further improve the service life of the conductor cables. The addition of germanium Ge can enhance the stability of the conductor cables in different temperature environments, so that the corrosion resistance, oxidation and temperature stability and tensile strength of the light alloy conductor cables can be effectively improved.

[0058] Embodiment 3: A light alloy conductor for photovoltaics, the light aluminum alloy conductor comprises the following components in mass percentage: the light aluminum alloy conductor comprises the following components in mass percentage: silicon Si: 0.06%, iron Fe: 0.5%, copper Cu: 0.4%, zirconium Zr: 0.3%, niobium Nb: 0.1%, barium Ba: 0.06%, germanium Ge: 0.5%, the impurity weight is 0.15%, and the balance is light alloy.

[0059] Among them, the light alloy is made of light alloy wires with a diameter of 0.5MM.

[0060] In addition, the tensile strength of the light alloy monofilament is 300PA, and the yield strength of the light alloy monofilament is 260PA, which can effectively enhance the pulling strength of the conductor cable so as to reduce the damage caused by external wind.

[0061] In addition, the elongation is ≥15%, and the resistivity is 1μΩ·m, which can enhance the elongation of the conductor cable while ensuring the stability of its resistivity.

[0062] A process for preparing a photovoltaic light alloy conductor cable comprises the following steps:

[0063] 1) melting the light alloy block in a furnace at a temperature of 700°C-780°C to obtain a light alloy liquid;

[0064] 2) Add silicon Si, iron Fe, copper Cu, zirconium Zr, niobium Nb, barium Ba, and germanium Ge into the light alloy liquid, and use a stirrer to evenly stir them in the light alloy liquid;

[0065] 3) Continue to add sodium-free refining agent into the interior, the ratio of sodium-free refining agent to light aluminum alloy liquid is 0.3:100, and use a stirrer to evenly mix the sodium-free refining agent and the light aluminum alloy liquid, and then put it into a smelting furnace for smelting;

[0066] 4) A light alloy solution is obtained by the operation methods of 1), 2) and 3), which is filtered and poured into a casting machine to be cast into a light aluminum nugget, and then placed in a water tank for cooling;

[0067] 5) The light aluminum nugget obtained by (4) is cooled and subjected to a rolling process, whereby a rolling mill rolls the light aluminum nugget into a light alloy rod;

[0068] 6) The light alloy rod is obtained by the operation method of 5), and the light alloy rod is subjected to wire drawing by a wire drawing machine to be drawn into an aluminum alloy single wire with a diameter of 0.5 mm;

[0069] 7) The plurality of light alloy monofilaments with a diameter of 0.5 mm obtained by the operation method of step 6 are twisted together to form a circular light aluminum alloy conductor that is compacted by twisting in the same direction;

[0070] 8) A light aluminum alloy conductor is obtained by the operation method of 7), and a layer of rubber insulation sheath is wrapped on the surface of the light aluminum alloy conductor by using an extruder to obtain a light alloy conductor cable.

[0071] Secondly, during the smelting in step 4), the smelting temperature and smelting time can be controlled and adjusted according to the actual situation so as to be able to be controlled in time according to the actual situation.

[0072] Furthermore, during cooling in step 5), the cooling temperature and cooling time can be controlled and adjusted according to actual conditions, so as to be able to be controlled in time according to actual conditions.

[0073] Experiments have shown that the addition of silicon Si can effectively improve the tensile strength and wear resistance, and the addition of iron Fe, copper Cu, zirconium Zr, niobium Nb and barium Ba can effectively enhance the corrosion resistance and oxidation performance of light alloy conductor cables, so that when they work in the external environment for a long time, they can reduce the corrosion and oxidation performance caused by the external environment, so as to further improve the service life of the conductor cables. The addition of germanium Ge can enhance the stability of the conductor cables in different temperature environments, so that the corrosion resistance, oxidation and temperature stability and tensile strength of the light alloy conductor cables can be effectively improved.

[0074] The beneficial effects of the present invention are that, by adding silicon Si, the electrical conductivity, thermal conductivity (which can effectively ensure thermal stability and heat resistance), and hardness and strength (which can effectively improve its tensile strength and wear resistance) of the light alloy conductor cable can be enhanced; by adding iron Fe, the corrosion resistance can be enhanced, and it can be effectively prevented from being corroded by water, oxygen, chemicals, etc.; by adding copper Cu, the wear and corrosion resistance can be enhanced while preventing oxidation, as well as elongation and toughness; by adding zirconium Zr, the wear and corrosion resistance and heat resistance can be improved so as to ensure the temperature resistance when working at high temperature; by adding niobium Nb, the tensile and wear and corrosion resistance can be enhanced; and by adding barium Ba, it can be ensured that it can be stable in a humid or corrosive environment, thereby effectively improving the corrosion resistance and oxidation resistance of the light alloy conductor, as well as the tensile resistance, and effectively extending its service life.

[0075] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0076] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A light alloy conductor for photovoltaic use, characterized in that: The light aluminum alloy conductor includes the following components in mass percentage: silicon Si: 0.04%-0.06%, iron Fe: 0.3%-0.5%, copper Cu: 0.2%-0.4%, zirconium Zr: 0.15%-0.3%, niobium Nb: 0.08%-0.1%, barium Ba: 0.04%-0.06%, germanium Ge: 0.15%-0.5%, impurities weigh 0.15%, and the balance is light alloy.

2. A photovoltaic light alloy conductor according to claim 1, characterized in that: The light aluminum alloy conductor comprises the following components in percentage by mass: silicon Si: 0.04%, iron Fe: 0.3%, copper Cu: 0.2%, zirconium Zr: 0.15%, niobium Nb: 0.08%, barium Ba: 0.04%, germanium Ge: 0.15%, impurities weigh 0.15%, and the balance is light alloy.

3. The photovoltaic light alloy conductor according to claim 1, characterized in that: The light aluminum alloy conductor comprises the following components in percentage by mass: 0.05% silicon Si, 0.4% iron Fe, 0.3% copper Cu, 0.2% zirconium Zr, 0.09% niobium Nb, 0.05% barium Ba, 0.35% germanium Ge, 0.15% by weight of impurities, and the remainder being light alloy.

4. The photovoltaic light alloy conductor according to claim 1, characterized in that: The light aluminum alloy conductor comprises the following components in percentage by mass: 0.06% silicon Si, 0.5% iron Fe, 0.4% copper Cu, 0.3% zirconium Zr, 0.1% niobium Nb, 0.06% barium Ba, 0.5% germanium Ge, 0.15% by weight of impurities, and the remainder being light alloy.

5. The photovoltaic light alloy conductor according to claim 1, characterized in that: The light alloy is formed by twisting light alloy wires with a diameter of 0.2-0.5MM.

6. The photovoltaic light alloy conductor according to claim 1, characterized in that: The tensile strength of the light alloy monofilament is 140PA-300PA, and the yield strength of the light alloy monofilament is 115PA-260PA.

7. The photovoltaic light alloy conductor according to claim 1, characterized in that: The elongation is ≥15%, and the resistivity is 0.1 μΩ.m-1 μΩ·m.

8. A process for preparing a photovoltaic light alloy conductor cable according to any one of claims 1 to 7, characterized in that: The following steps are involved: 1) melting the light alloy block in a furnace at a temperature of 700°C-780°C to obtain a light alloy liquid; 2) Add silicon Si, iron Fe, copper Cu, zirconium Zr, niobium Nb, barium Ba, and germanium Ge into the light alloy liquid, and use a stirrer to evenly stir them in the light alloy liquid; 3) Continue to add sodium-free refining agent into the interior, the ratio of sodium-free refining agent to light aluminum alloy liquid is 0.3:100, and use a stirrer to evenly mix the sodium-free refining agent and the light aluminum alloy liquid, and then put it into a smelting furnace for smelting; 4) A light alloy solution is obtained by the operation methods of 1), 2) and 3), which is filtered and poured into a casting machine to be cast into a light aluminum nugget, and then placed in a water tank for cooling; 5) The light aluminum nugget obtained by (4) is cooled and subjected to a rolling process, whereby a rolling mill rolls the light aluminum nugget into a light alloy rod; 6) The light alloy rod is obtained by the operation method of 5), and the light alloy rod is subjected to wire drawing by a wire drawing machine to be drawn into an aluminum alloy single wire with a diameter of 0.2-0.5MM; 7) The plurality of light alloy monofilaments with a diameter of 0.2-0.5 mm obtained by the operation method of step 6 are twisted together to form a circular compact light aluminum alloy conductor by twisting in the same direction; 8) A light aluminum alloy conductor is obtained by the operation method of 7), and a layer of rubber insulation sheath is wrapped on the surface of the light aluminum alloy conductor by using an extruder to obtain a light alloy conductor cable.

9. A process for preparing a photovoltaic light alloy conductor and cable according to claim 8, characterized in that: During the smelting in step 4), the smelting temperature and smelting time can be controlled and adjusted according to the actual situation.

10. A process for preparing a photovoltaic light alloy conductor and cable according to claim 8, characterized in that: During the cooling in step 5), the cooling temperature and cooling time can be controlled and adjusted according to actual conditions.