Waterproof, rat-proof and termite-proof comprehensive protection long-life photovoltaic cable

Abstract

The invention discloses a waterproof, rat-proof and termite-proof comprehensive protection long-life photovoltaic cable, and relates to the technical field of photovoltaic cables. The waterproof, rat-proof and termite-proof comprehensive protection long-life photovoltaic cable comprises a basic wire core, the basic wire core comprises a wire, the surface of the wire is sleeved with an insulating waterproof sleeve, the surface of the insulating waterproof sleeve is sleeved with a metal shielding net, and the surface of the metal shielding net is sleeved with an electric heating expelling module, a reagent expelling module and an ultrasonic expelling module. According to the waterproof, rat-proof and termite-proof comprehensive protection long-life photovoltaic cable, by arranging the basic wire core, the electric heating expelling module, the reagent expelling module and the ultrasonic expelling module, the waterproofness and thermal conductivity of the wire are improved, the state of rats and termites on the surface of the cable is detected in real time, active expelling and directional expelling of the rats and the termites are achieved, and the service life of the cable is prolonged. And the protection capability of the cable on mice and ants is improved while the adverse effect on the surrounding environment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic cables, and in particular to a photovoltaic cable with comprehensive protection against water, rat and termites and a long service life. Background Art

[0002] Photovoltaic cables are used to connect photovoltaic modules, inverters, distribution boxes and other photovoltaic system equipment. They usually need to be laid on the surface or underground to match the layout of the photovoltaic power generation system. The patent application with publication number CN215183202U discloses a waterproof, rat-proof and termite-proof comprehensive protection high-life photovoltaic cable, comprising a cable conductor, an inner water-blocking tape, an insulating layer, a nylon sheath layer, an outer water-blocking tape, a metal protective layer and an outer sheath layer, a plurality of cable conductors are twisted to form a twisted conductor, water-blocking yarn and water-blocking powder are filled in between, and various layers are sequentially arranged outside the twisted conductor, the cable conductor is an aluminum alloy or copper conductor, the insulating layer is made of cross-linked polyethylene, and the nylon sheath layer is made of nylon; The patent provides a waterproof, rat-proof and termite-proof photovoltaic cable with a long lifespan. Although its nylon sheath layer has rat-proof and termite-proof properties, the protective performance of the nylon sheath layer of the cable buried underground gradually decreases over time as rats and ants adapt to the surrounding environment, causing the cable to be damaged by rats and ants, affecting power transmission. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a photovoltaic cable with comprehensive protection against water, rats, and termites and a long service life to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a waterproof, rat-proof and termite-proof comprehensive protection high-life photovoltaic cable, comprising a basic wire core, the basic wire core comprising a wire, the surface of the wire is sleeved with an insulating waterproof sleeve, the surface of the insulating waterproof sleeve is sleeved with a metal shielding net, the surface of the metal shielding net is sleeved with an electric heat expulsion module, a reagent expulsion module, and an ultrasonic expulsion module; The electric heat expulsion module includes a resistance sensing layer, which is used to sense the pressure of rats and ants on the cable surface. The surface of the resistance sensing layer is sleeved with an electric heat expulsion layer, which is used to energize and generate heat to expel rats and ants: The reagent expelling module includes a reagent expelling layer, which is used to buffer the pressure of rats and ants biting the outer layer of the wire, and release the buffer to drive away the rats and ants after damage. The surface of the reagent expelling layer is fixedly connected with an oblique tooth protective layer, which is used to drive away the rats by contacting the rats' mouths and causing tenderness; The ultrasonic expulsion module comprises a pressure sensing layer, which is sleeved on the outer surface of the metal shielding net to sense the pressure of contact with rats and ants, and the ultrasonic expulsion layer is sleeved on the surface of the pressure sensing layer to emit ultrasonic waves to expel rats and ants.

[0005] Preferably, the inside of the wire is connected by twisting, and a filling layer is filled between the outer surface of the wire and the inner surface of the insulating waterproof sleeve. The filling layer is a mixture of waterproof powder and ceramic powder, and is used to cooperate with the insulating waterproof sleeve to achieve water-blocking and heat conduction. The metal shielding net is used to shield external electromagnetic interference and provide preliminary protection against rat and ant bites.

[0006] Preferably, the resistance sensing layer includes a resistance bottom sleeve, which is sleeved on the surface of the metal shielding mesh, a plastic film is covered between the inner surface of the resistance bottom sleeve and the outer surface of the metal shielding mesh, a wire is buried inside the resistance bottom sleeve, and a resistance kit is fixedly connected to the outer surface of the resistance bottom sleeve for sensing the pressure condition outside the cable, and the resistance kit is electrically connected to the photovoltaic control mechanism on the ground surface through the wire inside the resistance bottom sleeve.

[0007] Preferably, the resistor kit includes a piezoresistor, which is located on the outer surface of the resistor bottom sleeve and is used to sense pressure changes. A thermistor is fixedly connected to the outer surface of the resistor bottom sleeve and is used to sense temperature changes inside the cable. The bottoms of the piezoresistor and thermistor are electrically connected to the wire inside the resistor bottom sleeve.

[0008] Preferably, the electrothermal expulsion layer includes an electrothermal bottom sleeve, which is sleeved on the outer surface of the resistor bottom sleeve. The electrothermal bottom sleeve is made of chloroprene rubber. An electric heating wire is fixedly connected to the outer surface of the electric heating bottom sleeve. A heating wire is buried inside the electric heating wire. The electric heating wire is electrically connected to a photovoltaic control mechanism on the ground surface to generate heat to expel rats and ants.

[0009] Preferably, the reagent expelling layer includes an elastic sleeve, the elastic sleeve is made of polyurethane elastomer, and a plastic film is covered between the inner surface of the elastic sleeve and the outer surface of the metal shielding net to protect the basic wire core. The elastic sleeve is connected to a reagent clamping chamber, and the reagent clamping chamber is filled with a buffer solution containing mint extract to cushion the impact of rats and ants biting, and at the same time, the buffer solution is used to expel rats and ants after the elastic sleeve is damaged.

[0010] Preferably, a beveled tooth protective layer is fixedly connected to the outer surface of the elastic sleeve. The beveled tooth protective layer is made of polyurethane. The front cross-section of the beveled tooth protective layer is triangular. The beveled tooth protective layer is spirally wound on the outer surface of the elastic sleeve to squeeze the rat's mouth when the rat bites and drive away the rat by stinging.

[0011] Preferably, the pressure sensing layer includes a sensor bottom sleeve, which is sleeved on the outer surface of the metal shielding net, with a wire buried inside the sensor bottom sleeve, a thin film pressure sensor fixedly connected to the outer surface of the sensor bottom sleeve, the bottom of the thin film pressure sensor is electrically connected to the wire inside the sensor bottom sleeve, and the thin film pressure sensor is used to sense the pressure of rats and ants on the outer surface of the cable.

[0012] Preferably, the pressure sensing layer includes a sensor bottom sleeve, which is sleeved on the outer surface of the metal shielding net, with a wire buried inside the sensor bottom sleeve, a thin film pressure sensor fixedly connected to the outer surface of the sensor bottom sleeve, the bottom of the thin film pressure sensor is electrically connected to the wire inside the sensor bottom sleeve, and the thin film pressure sensor is used to sense the pressure of rats and ants on the outer surface of the cable.

[0013] Preferably, the ultrasonic repelling layer includes an ultrasonic kit, which is used to emit ultrasonic waves to repel rats and ants. The ultrasonic kit includes an elastic mounting seat, which is used to install and protect an ultrasonic emitting mechanism. The elastic mounting seat is made of polyurethane. An ultrasonic transmitter is embedded in the surface of the elastic mounting seat, which is used to emit ultrasonic waves to repel rats and ants. The number of ultrasonic transmitters is twelve and they are evenly distributed on the outer surface of the elastic mounting seat. A flexible metal mesh is fixedly connected to the back of the elastic mounting seat. The flexible metal mesh is made of flexible metal and is used to protect the pressure sensing layer.

[0014] Preferably, the ultrasonic kit and the flexible metal mesh are connected in sequence in the front-to-back direction, and the ultrasonic kit and the flexible metal mesh are both sleeved on the outer surface of the pressure sensing layer, and the outer surface of the ultrasonic expulsion layer is sleeved with an ultrasonic sheath, and the ultrasonic sheath is made of polyurethane elastomer and is used to protect the ultrasonic transmitter.

[0015] The present invention provides a waterproof, rat-proof and termite-proof photovoltaic cable with a long service life. It has the following beneficial effects: 1. This waterproof, rat-proof and termite-proof comprehensive protection high-life photovoltaic cable, by setting a basic wire core, using a mixture of water-blocking powder and ceramic powder to form a filling layer, while filling the gap between the wire and the waterproof sleeve, improves the waterproofness and thermal conductivity of the wire, and improves the reliability of the wire in the underground environment. The basic wire core is matched with an electric heating expulsion module to reduce the adverse effects of moisture and low temperature environment around the wire on the wire through heating without affecting the conductive performance.

[0016] 2. This waterproof, rat-proof and termite-proof comprehensive protection long-life photovoltaic cable, by setting an electric thermal expulsion module, uses a resistance sensing layer and an electric thermal expulsion layer to perform real-time detection of the status of rats and ants on the cable surface, and drives away rats and ants that invade the cable through high-temperature heating, thereby achieving active expulsion of rats and termites, reducing adverse effects on the surrounding environment, while improving the cable's protection against rats and ants, thereby improving the reliability of the cable.

[0017] 3. This waterproof, rat-proof and termite-proof integrated protection long-life photovoltaic cable, by setting a reagent expulsion module, uses a reagent expulsion layer in conjunction with a beveled tooth protective layer to improve the ability of the beveled tooth protective layer to resist rodent bites, and uses a buffer solution containing plant essences to achieve the expulsion of rodents and termites, thereby improving the cable's ability to protect against rodents and ants, thereby improving the reliability of the cable.

[0018] 4. This waterproof, rat-proof and termite-proof comprehensive protection high-life photovoltaic cable, by setting an ultrasonic repellent module and using an ultrasonic kit in conjunction with a pressure sensor, can achieve accurate detection of the location of rat and ant intrusion on the cable, and achieve directional expulsion of rats and ants using ultrasound, thereby improving the cable's ability to protect against rats and ants, while reducing the impact on the cable's conductivity during the process of expelling rats and ants. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the first solution of the present invention; Figure 2 This is a schematic diagram of the overall structure of the basic wire core of the present invention; Figure 3 This is a schematic diagram of the overall structure of the resistance sensing layer of the present invention; Figure 4 This is a schematic diagram of the overall structure of the second solution of the present invention; Figure 5 This is a schematic diagram of the overall structure of the reagent expelling layer and the bevel tooth protective layer of the present invention; Figure 6 This is a cross-sectional view of the internal structure of the reagent expelling layer of the present invention; Figure 7 This is a schematic diagram of the overall structure of the third solution of the present invention; Figure 8 This is a schematic diagram of the positional relationship between the ultrasonic expulsion layer and the basic wire core of the present invention; Fig. 9 This is a schematic diagram of the overall structure of the ultrasonic expulsion layer of the present invention; Fig.10 It is a schematic diagram of the overall structure of the pressure sensing layer of the present invention.

[0020] In the figure: 1. basic wire core; 11. conductor; 12. insulating waterproof sleeve; 13. filling layer; 14. metal shielding net; 2. resistance sensing layer; 21. resistance bottom sleeve; 22. resistance kit; 221. piezoelectric resistor; 222. thermistor; 3. electric heating expulsion layer; 31. electric heating bottom sleeve; 32. electric heating wire; 4. reagent expulsion layer; 41. elastic sleeve; 42. reagent clamping chamber; 5. bevel tooth protection layer; 6. pressure sensing layer; 61. sensor bottom sleeve; 62. thin film pressure sensor; 7. ultrasonic expulsion layer; 71. ultrasonic kit; 711. elastic mounting seat; 712. ultrasonic transmitter; 72. flexible metal mesh; 8. ultrasonic sheath. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0023] Embodiment 1

[0024] See also Figure 1-3 The present invention provides a technical solution: a waterproof, rat-proof and termite-proof comprehensive protection high-life photovoltaic cable, comprising a basic wire core 1, the basic wire core 1 comprises a conductor 11, the inside of the conductor 11 is connected by twisting, the surface of the conductor 11 is sleeved with an insulating waterproof sleeve 12, and a filling layer 13 is filled between the outer surface of the conductor 11 and the inner surface of the insulating waterproof sleeve 12. The filling layer 13 is a mixture of waterproof powder and ceramic powder, which is used to cooperate with the insulating waterproof sleeve 12 to achieve water blocking and heat conduction. The surface of the insulating waterproof sleeve 12 is sleeved with a metal shielding net 14, which is used to shield external electromagnetic interference and provide preliminary protection against rat and ant biting. The surface of the metal shielding net 14 is sleeved with an electric heat expulsion module; The electric heat expulsion module includes a resistance sensing layer 2, which is used to sense the pressure exerted by rats and ants on the surface of the cable. The resistance sensing layer 2 includes a resistance bottom sleeve 21, which is sleeved on the surface of the metal shielding net 14. A plastic film is covered between the inner surface of the resistance bottom sleeve 21 and the outer surface of the metal shielding net 14. A wire is buried inside the resistance bottom sleeve 21. A resistance kit 22 is fixedly connected to the outer surface of the resistance bottom sleeve 21 for sensing the pressure outside the cable. The resistance kit 22 is electrically connected to the photovoltaic control mechanism on the ground surface through the wire inside the resistance bottom sleeve 21. The resistance kit 22 includes a piezoresistor 221, which is located on the outer surface of the resistance bottom sleeve 21 for sensing pressure changes. A thermistor 222 is fixedly connected to the outer surface of the resistance bottom sleeve 21. The thermistor 222 is a positive temperature coefficient thermistor for sensing temperature changes inside the cable. The bottoms of the piezoresistor 221 and the thermistor 222 are both electrically connected to the wire inside the resistance bottom sleeve 21. The surface of the resistance sensing layer 2 is sleeved with an electric heat expulsion layer 3, which includes an electric heating bottom sleeve 31. The electric heating bottom sleeve 31 is sleeved on the outer surface of the resistance bottom sleeve 21. The material of the electric heating bottom sleeve 31 is chloroprene rubber. The outer surface of the electric heating bottom sleeve 31 is fixedly connected with an electric heating wire 32. A heating wire is buried inside the electric heating wire 32. The electric heating wire 32 is electrically connected to a photovoltaic control mechanism on the ground surface to generate heat to expel rats and ants.

[0025] When in use, after the entire cable is buried underground, the wire leading out of the resistor bottom sleeve 21 is connected to the surface photovoltaic control system. When the photovoltaic power generation system is working, electricity is transmitted through the wire 11. When the underground temperature decreases, the resistance of the thermistor 222 decreases, and then the current flowing through the thermistor 222 increases. When the photovoltaic power generation control system senses that the current of the thermistor 222 increases, the thermistor 222 energizes the heating wire 32. After the heating wire 32 is energized, it generates heat to heat the surrounding cables and soil, thereby preventing the underground temperature from being too low and affecting the transmission effect of the cable. When rats and ants touch the surface of the cable, the contact between the rats and ants and the cable will exert pressure on the surface of the cable. The pressure is applied to the piezoresistor 221 through the electric heating bottom sleeve 31. The piezoresistor 221 receives the mechanical stress change and reduces its resistance. The current flowing through the piezoresistor 221 increases. When the photovoltaic power generation control system on the surface senses the increase in the current flowing through the piezoresistor 221, the electric heating wire 32 is energized and heated under the control of the control system. The heat generates high temperature, which drives away the rats and ants that touch the surface of the cable. Driven by the pain of high temperature burns, the rats and ants stay away from the cable, thereby preventing the cable from being damaged by the rats and ants.

[0026] Embodiment 2

[0027] See also Figure 4-6The present invention provides a second technical solution: the basic wire core 1 includes a wire 11, the wire 11 is connected internally by twisting, an insulating waterproof sleeve 12 is sleeved on the surface of the wire 11, a filling layer 13 is filled between the outer surface of the wire 11 and the inner surface of the insulating waterproof sleeve 12, the filling layer 13 is a mixture of waterproof powder and ceramic powder, and is used to cooperate with the insulating waterproof sleeve 12 to achieve water blocking and heat conduction, a metal shielding net 14 is sleeved on the surface of the insulating waterproof sleeve 12, the metal shielding net 14 is used to shield external electromagnetic interference, and at the same time provide preliminary protection against rat and ant biting, and a reagent expelling module is sleeved on the surface of the metal shielding net 14; The reagent expelling module includes a reagent expelling layer 4, which is used to buffer the pressure of rats and ants gnawing on the outer layer of the wire, and release the buffer to drive away the rats and ants after being damaged. The reagent expelling layer 4 includes an elastic sleeve 41, which is made of polyurethane elastomer. A plastic film is covered between the inner surface of the elastic sleeve 41 and the outer surface of the metal shielding net 14 to protect the basic wire core 1. The elastic sleeve 41 is connected to a reagent clamping chamber 42, and the reagent clamping chamber 42 is filled with a buffer containing mint extract to buffer the impact of rats and ants gnawing. At the same time, the buffer is used to drive away rats and ants after the elastic sleeve 41 is damaged; A beveled tooth protective layer 5 is fixedly connected to the surface of the reagent expelling layer 4. The beveled tooth protective layer 5 is made of polyurethane. The front cross-section of the beveled tooth protective layer 5 is triangular. The beveled tooth protective layer 5 is spirally wound on the outer surface of the elastic sleeve 41. The beveled tooth protective layer 5 is used to expel rats by causing tenderness in the rat's mouth.

[0028] When in use, when a mouse bites the outer surface of the cable, the inner wall of its mouth will contact the outer surface of the beveled tooth protective layer 5. Since the top area of ​​the beveled tooth protective layer 5 is small, when it contacts the inner wall of the mouse's mouth, it will squeeze the inner wall of the mouse's mouth, thereby stinging the mouse. After the mouse feels the pain caused by the top of the beveled tooth protective layer 5, the mouse stops damaging the cable. At the same time, when the mouse bites the outer surface of the cable, the force applied by the mouse to the beveled tooth protective layer 5 will be absorbed by the buffer solution inside the reagent clamp chamber 42. When the beveled tooth protective layer 5 and the reagent repelling layer 4 are torn and damaged by rodents or termites, the buffer solution inside the reagent clamp chamber 42 flows out. Since the buffer solution contains mint extract, it will interfere with the nervous system of termites or rodents, causing discomfort to termites or rodents, thereby keeping termites or rodents away from the cable and stopping damage to the cable.

[0029] Embodiment 3

[0030] See also Figure 7-10The present invention provides a third technical solution: the basic wire core 1 includes a wire 11, the wire 11 is connected internally by twisting, an insulating waterproof sleeve 12 is sleeved on the surface of the wire 11, a filling layer 13 is filled between the outer surface of the wire 11 and the inner surface of the insulating waterproof sleeve 12, the filling layer 13 is a mixture of waterproof powder and ceramic powder, and is used to cooperate with the insulating waterproof sleeve 12 to achieve water blocking and heat conduction, a metal shielding net 14 is sleeved on the surface of the insulating waterproof sleeve 12, the metal shielding net 14 is used to shield external electromagnetic interference, and at the same time provide preliminary protection against rat and ant biting, and an ultrasonic repelling module is sleeved on the surface of the metal shielding net 14; The ultrasonic expulsion module includes a pressure sensing layer 6, which is sleeved on the outer surface of the metal shielding net 14 and is used to sense the pressure of contact between rats and ants. The pressure sensing layer 6 includes a sensor bottom sleeve 61, which is sleeved on the outer surface of the metal shielding net 14. A wire is buried inside the sensor bottom sleeve 61. A thin film pressure sensor 62 is fixedly connected to the outer surface of the sensor bottom sleeve 61. The bottom of the thin film pressure sensor 62 is electrically connected to the wire inside the sensor bottom sleeve 61. The thin film pressure sensor 62 is used to sense the pressure of rats and ants on the outer surface of the cable. The ultrasonic repelling layer 7 is sleeved on the surface of the pressure sensing layer 6 and is used to emit ultrasonic waves to repel rats and ants. The ultrasonic repelling layer 7 includes an ultrasonic kit 71, which is used to emit ultrasonic waves to repel rats and ants. The ultrasonic kit 71 includes an elastic mounting seat 711, which is used to install and protect the ultrasonic emitting mechanism. The elastic mounting seat 711 is made of polyurethane. Ultrasonic emitters 712 are buried on the surface of the elastic mounting seat 711. The ultrasonic emitters 712 are used to emit ultrasonic waves to repel rats and ants. The number of ultrasonic emitters 712 is twelve and they are evenly distributed on the outer surface of the elastic mounting seat 711. A flexible metal mesh 72 is fixedly connected to the back of the elastic mounting seat 711. The flexible metal mesh 72 is made of flexible metal and is used to protect the pressure sensing layer 6. The ultrasonic kit 71 and the flexible metal mesh 72 are sequentially connected in the front-to-back direction, and the ultrasonic kit 71 and the flexible metal mesh 72 are sleeved on the outer surface of the pressure sensing layer 6. The outer surface of the ultrasonic expelling layer 7 is sleeved with an ultrasonic sheath 8 , which is made of polyurethane elastomer and is used to protect the ultrasonic transmitter 712 .

[0031] During use, when rats or termites gnaw and damage the outer surface of the cable, the termites or rats will squeeze the ultrasonic sheath 8. After being squeezed, the ultrasonic sheath 8 undergoes elastic deformation to squeeze the ultrasonic repellent layer 7, and then the elastic deformation of the ultrasonic repellent layer 7 squeezes the film pressure sensor 62 at the bitten and damaged part. After the film pressure sensor 62 is squeezed, the photovoltaic power generation control system senses the change in data sent back by the film pressure sensor 62, and then controls the ultrasonic transmitter 712 corresponding to the bitten and damaged part to start working. The ultrasonic transmitter 712 transmits ultrasonic waves to the rats and ants that damage the cable, and then interferes with the hearing and nervous system of the rats and ants through ultrasonic waves, causing discomfort to the rats and ants, prompting them to stay away from the cable.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A waterproof, rat-proof and termite-proof photovoltaic cable with a long service life, comprising a basic wire core (1), characterized in that: The basic wire core (1) comprises a conductor (11), the surface of the conductor (11) is sleeved with an insulating waterproof sleeve (12), the surface of the insulating waterproof sleeve (12) is sleeved with a metal shielding net (14), and the surface of the metal shielding net (14) is sleeved with an electric heat expulsion module, a reagent expulsion module, and an ultrasonic expulsion module; The electric heat expulsion module comprises a resistance sensing layer (2), the resistance sensing layer (2) is used to sense the pressure exerted by rats and ants on the surface of the cable, the surface of the resistance sensing layer (2) is sleeved with an electric heat expulsion layer (3), the electric heat expulsion layer (3) is used to generate electricity and heat to expel rats and ants: The reagent expelling module comprises a reagent expelling layer (4), the reagent expelling layer (4) is used to buffer the pressure of rats and ants gnawing on the outer layer of the wire, and release the buffer solution to drive away the rats and ants after damage, and the surface of the reagent expelling layer (4) is fixedly connected to a beveled tooth protective layer (5), and the beveled tooth protective layer (5) is used to drive away the rats by contacting the rats' mouths and causing tenderness; The ultrasonic expulsion module comprises a pressure sensing layer (6), the pressure sensing layer (6) being sleeved on the outer surface of the metal shielding net (14) for sensing the pressure of contact with rats and ants, and the surface of the pressure sensing layer (6) being sleeved with an ultrasonic expulsion layer (7) for emitting ultrasonic waves to expel rats and ants.

2. A waterproof, rat-proof and termite-proof photovoltaic cable with a long service life according to claim 1, characterized in that: The wires (11) are connected internally by twisting, and a filling layer (13) is filled between the outer surface of the wires (11) and the inner surface of the insulating waterproof sleeve (12). The filling layer (13) is a mixture of waterproof powder and ceramic powder, and is used to cooperate with the insulating waterproof sleeve (12) to achieve water resistance and heat conduction. The metal shielding net (14) is used to shield external electromagnetic interference and provide preliminary protection against rat and ant bites.

3. A waterproof, rat-proof and termite-proof photovoltaic cable with a long service life according to claim 2, characterized in that: The resistor sensing layer (2) comprises a resistor bottom sleeve (21), the resistor bottom sleeve (21) is sleeved on the surface of the metal shielding net (14), a plastic film is covered between the inner surface of the resistor bottom sleeve (21) and the outer surface of the metal shielding net (14), a conductor is buried inside the resistor bottom sleeve (21), a resistor set (22) is fixedly connected to the outer surface of the resistor bottom sleeve (21) for sensing the pressure condition outside the cable, and the resistor set (22) is electrically connected to a photovoltaic control mechanism on the ground surface via the conductor inside the resistor bottom sleeve (21).

4. The waterproof, rat-proof and termite-proof photovoltaic cable with a long service life according to claim 3, characterized in that: The resistor set (22) comprises a piezoresistance (221), the piezoresistance (221) being located on the outer surface of the resistor base sleeve (21) and used for sensing pressure changes, a thermistor (222) being fixedly connected to the outer surface of the resistor base sleeve (21) and used for sensing temperature changes inside the cable, and the bottoms of the piezoresistance (221) and the thermistor (222) are both electrically connected to a wire inside the resistor base sleeve (21).

5. The waterproof, rat-proof and termite-proof photovoltaic cable with a long service life according to claim 4, characterized in that: The electric heat expulsion layer (3) comprises an electric heat bottom sleeve (31), the electric heat bottom sleeve (31) is sleeved on the outer surface of the resistor bottom sleeve (21), the electric heat bottom sleeve (31) is made of chloroprene rubber, an electric heat wire (32) is fixedly connected to the outer surface of the electric heat bottom sleeve (31), an electric heat wire is buried inside the electric heat wire (32), and the electric heat wire (32) is electrically connected to a photovoltaic control mechanism on the ground surface, and is used to generate heat to expel rats and ants.

6. The waterproof, rat-proof and termite-proof photovoltaic cable with a long service life according to claim 2, characterized in that: The reagent expelling layer (4) comprises an elastic sleeve (41), the elastic sleeve (41) being made of polyurethane elastomer, a plastic film covering the inner surface of the elastic sleeve (41) and the outer surface of the metal shielding net (14) for protecting the base wire core (1), the elastic sleeve (41) being connected to a reagent clamping chamber (42), the reagent clamping chamber (42) being filled with a buffer solution containing a mint extract for buffering the impact of rats and ants biting, and the buffer solution is used to expel rats and ants when the elastic sleeve (41) is damaged.

7. A waterproof, rat-proof and termite-proof photovoltaic cable with a long service life according to claim 6, characterized in that: The outer surface of the elastic sleeve (41) is fixedly connected with a beveled tooth protective layer (5), the beveled tooth protective layer (5) is made of polyurethane, the front cross-section of the beveled tooth protective layer (5) is triangular, and the beveled tooth protective layer (5) is spirally wound on the outer surface of the elastic sleeve (41) to squeeze the oral cavity of the rodent when the rodent bites, thereby driving the rodent away by stinging.

8. The waterproof, rat-proof and termite-proof photovoltaic cable with a long service life according to claim 2, characterized in that: The pressure sensing layer (6) comprises a sensor bottom sleeve (61), the sensor bottom sleeve (61) is sleeved on the outer surface of the metal shielding net (14), a conductive wire is embedded in the sensor bottom sleeve (61), a thin film pressure sensor (62) is fixedly connected to the outer surface of the sensor bottom sleeve (61), the bottom of the thin film pressure sensor (62) is electrically connected to the conductive wire inside the sensor bottom sleeve (61), and the thin film pressure sensor (62) is used to sense the pressure of rats and ants on the outer surface of the cable.

9. The waterproof, rat-proof and termite-proof photovoltaic cable with a long service life according to claim 8, characterized in that: The ultrasonic repelling layer (7) comprises an ultrasonic kit (71), the ultrasonic kit (71) being used to emit ultrasonic waves to repel rats and ants, the ultrasonic kit (71) comprising an elastic mounting seat (711), the elastic mounting seat (711) being used to mount and protect an ultrasonic emitting mechanism, the elastic mounting seat (711) being made of polyurethane, an ultrasonic emitter (712) being embedded in the surface of the elastic mounting seat (711), the ultrasonic emitter (712) being used to emit ultrasonic waves to repel rats and ants, the number of the ultrasonic emitters (712) being twelve and being evenly distributed on the outer surface of the elastic mounting seat (711), the back of the elastic mounting seat (711) being fixedly connected with a flexible metal mesh (72), the flexible metal mesh (72) being made of flexible metal, and the flexible metal mesh (72) being used to protect the pressure sensing layer (6).

10. The waterproof, rat-proof and termite-proof photovoltaic cable with a long service life according to claim 9, characterized in that: The ultrasonic kit (71) and the flexible metal mesh (72) are connected in sequence in the front-to-back direction, and the ultrasonic kit (71) and the flexible metal mesh (72) are both sleeved on the outer surface of the pressure sensing layer (6), and the outer surface of the ultrasonic expulsion layer (7) is sleeved with an ultrasonic sheath (8), the ultrasonic sheath (8) is made of polyurethane elastomer and is used to protect the ultrasonic transmitter (712).

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