New energy power transformer capable of preventing frosting

Abstract

The invention discloses a new energy power transformer capable of preventing frosting, and relates to the technical field of electrical equipment, and the new energy power transformer is technically characterized in that the new energy power transformer comprises a shell, a plurality of containing cavities are formed in the side wall of the shell, and the containing cavities are filled with phase change energy storage materials; the outer surface of the top of the shell is covered with a photovoltaic assembly, a plurality of cooling fins are connected to the shell, thermoelectric power generation pieces are embedded in the outer surfaces of the cooling fins, and the photovoltaic assembly and the thermoelectric power generation pieces are electrically connected with a battery pack through a charging controller. A temperature sensor is arranged in the containing cavity, a heating assembly is embedded in the side wall, close to the outside, of the containing cavity, the temperature sensor is arranged in the containing cavity, the battery pack is electrically connected with the heating assembly through a control unit, and the temperature sensor controls starting or closing of the heating assembly through the control unit according to the preset temperature lower limit. The anti-frosting device has reliable and low-energy-consumption anti-frosting capability.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology, and in particular to a new energy power transformer that can prevent frost. Background Technology

[0002] As a core component of new energy power generation systems, new energy power transformers are based on the law of electromagnetic induction. Through the integrated design of components such as high-voltage load switches and protective fuses, they achieve efficient conversion and transmission of electrical energy. Compared to traditional transformers, new energy transformers employ a fully sealed oil tank structure, using insulating oil as the insulation and heat dissipation medium, offering advantages such as small size, light weight, and convenient installation. Their applications are widely distributed across residential communities, public places, industrial and mining enterprises, and wind and photovoltaic power generation, becoming a key support for new energy grid connection and distributed energy systems. However, with the expansion of new energy power generation, the operational stability of transformers in extreme environments has become a key area for technological breakthroughs.

[0003] In low-temperature environments, new energy transformers face the severe challenge of condensation and frosting. When the ambient temperature drops sharply, condensation easily forms on the surface and internal components of the transformer, leading to accelerated corrosion and electrochemical corrosion of metal parts. Taking terminal boxes as an example, condensation droplets may slide down the box walls to the terminal blocks, causing short circuits or grounding faults in secondary circuits. In severe cases, this can cause circuit breakers to malfunction or fail to operate, endangering power grid safety. Furthermore, the steam generated by condensation can interfere with the normal operation of monitoring equipment, making it difficult for maintenance personnel to monitor equipment status in real time. This problem is particularly prominent in regions with large diurnal temperature variations and high humidity, such as Northwest China, directly leading to increased equipment maintenance costs and decreased power supply reliability.

[0004] To address the problem of low-temperature condensation, existing technologies mostly employ passive protection measures such as anti-condensation heaters and rainproof covers, but these solutions suffer from drawbacks such as high energy consumption and unstable protective effects. Summary of the Invention

[0005] In order to solve the above-mentioned technical problems, the purpose of this invention is to provide a new energy power transformer that can prevent frost, which has reliable and low-energy-consumption anti-frost capability.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A new energy power transformer with anti-frost capability includes a housing, with multiple receiving cavities provided in the side wall of the housing, the receiving cavities being filled with phase change energy storage material; the top outer surface of the housing is covered with photovoltaic modules, multiple heat sinks are connected to the housing, thermoelectric generators are embedded on the outer surface of the heat sinks, and the photovoltaic modules and thermoelectric generators are electrically connected to a battery pack through a charging controller.

[0008] A temperature sensor is installed inside the cavity, and a heating element is embedded in the side wall of the cavity near the outside. The battery pack is electrically connected to the heating element through a control unit. The temperature sensor controls the heating element to start or stop according to a preset lower temperature limit through the control unit.

[0009] Preferably, the area where the receiving cavity is located is close to or covers the frost-prone area of ​​the shell, and the frost-prone area is set at the connection between the shell and the sleeve, the bottom of the shell, the corners, and the gaps in the shell.

[0010] Preferably, the heat sink is disposed on the outer walls of both sides of the housing and is located outside the area where the receiving cavity is located.

[0011] Preferably, the photovoltaic module is a flexible perovskite photovoltaic film.

[0012] Preferably, the heating component is a flexible graphene heating film, and the contact surface between the flexible graphene heating film and the phase change energy storage material is provided with raised or recessed textures.

[0013] Preferably, each of the receiving cavities is connected by a thermally conductive film, both ends of which extend into the phase change energy storage material. The thermally conductive film is tightly clamped inside the housing and connected to the heat sink. A heat-insulating film is bonded to both sides of the thermally conductive film, and a through hole is provided on the heat-insulating film near the heat sink for the heat sink to pass through.

[0014] Preferably, the housing has a ventilation opening, and an adjustable ventilation valve is installed at the opening of the ventilation opening. A dustproof net and a fan are installed inside the ventilation opening, and the number of ventilation openings is at least two. The ventilation valve and the fan are electrically connected to the control unit, and the control unit controls the opening or closing of the ventilation valve and the fan based on the feedback from the temperature sensor inside the cavity and the preset upper temperature limit.

[0015] The present invention has the following beneficial effects:

[0016] I. Precise Temperature Monitoring and Intelligent Heating Control: A temperature sensor is installed inside the housing cavity, and the battery pack is electrically connected to the heating element via a control unit. The temperature sensor, through the control unit, controls the heating element to start or stop based on a preset lower temperature limit. This allows the transformer to monitor the temperature inside the housing cavity in real time. When the temperature falls below the preset lower limit, the heating element is activated promptly to prevent frost formation; when the temperature rises back to the appropriate range, the heating element shuts off, ensuring the accuracy and timeliness of the anti-frost operation and greatly improving the reliability of anti-frost measures.

[0017] II. Targeted Area Protection: The housing area is close to or covers areas of the casing prone to frost, such as the connection between the casing and the bushing, the bottom of the casing, corners, and gaps in the casing. These areas are usually prone to frost formation on transformers. By specifically designing the housing and heating components, these frost-prone areas can be effectively protected, reducing the probability of frost formation and improving the reliability of frost prevention.

[0018] III. Multi-pronged Anti-Frosting Measures: In addition to the heating components, ventilation openings, ventilation valves, and fans are also included. The control unit controls the opening and closing of the ventilation valves and fans based on feedback from the temperature sensor inside the cavity and the preset upper temperature limit. When the temperature is too high, the ventilation valves and fans are opened for ventilation and heat dissipation, preventing other problems caused by localized overheating. This also indirectly helps maintain overall temperature stability and prevent frost. The synergistic effect of these multiple measures ensures the anti-frostting effect from different angles, improving the reliability of the anti-frostting system.

[0019] IV. Application of Phase Change Energy Storage Materials: The cavity inside the sidewall of the shell is filled with phase change energy storage materials. Phase change energy storage materials can absorb or release a large amount of heat when the temperature changes. They absorb and store heat when the temperature is high during the day and release heat when the temperature drops at night, maintaining a relatively stable temperature inside the cavity, reducing the number of times the heating components are started and the running time, thereby reducing energy consumption.

[0020] V. Photovoltaic Module and Thermoelectric Generator Power Supply: The top outer surface of the casing is covered with photovoltaic modules, and thermoelectric generators are embedded in the outer surface of the heat sink. The photovoltaic modules and thermoelectric generators are electrically connected to the battery pack via a charge controller. The photovoltaic modules generate electricity using solar energy, while the thermoelectric generators generate electricity using the temperature difference between the heat sink and the external environment to charge the battery pack. The battery pack then powers heating components, ventilation valves, and fans. This self-powered system reduces dependence on the external power grid and lowers energy costs.

[0021] VI. High-efficiency heating of flexible graphene heating film: The heating component is set as a flexible graphene heating film, which has the characteristics of high heating efficiency and low energy consumption. It can quickly convert electrical energy into heat energy, reducing energy consumption while meeting the anti-condensation requirements, and achieving a low-energy anti-condensation effect.

[0022] VII. Optimized Heat Transfer via Thermal Conductive Film: Each cavity is connected by a thermal conductive film, both ends of which extend into the phase change energy storage material and are connected to the heat sink. This film efficiently transfers heat between the cavities and between the cavities and the heat sink, resulting in more uniform heat distribution, improved heat utilization efficiency, reduced unnecessary energy loss, and contributing to low-energy anti-frost protection. Simultaneously, insulating films are bonded to both sides of the thermal conductive film. The insulating film near the heat sink has through-holes for the heat sink to pass through, further reducing heat loss and improving heat utilization efficiency while lowering energy consumption. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a cross-sectional view of the first embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the connection relationship in the first embodiment of the present invention.

[0026] Figure 3 This is a partial cross-sectional view of the sidewall of the housing according to the second embodiment of the present invention.

[0027] In the diagram: 1. Housing; 101. Receiving cavity; 102. Heat sink; 2. Phase change energy storage material; 301. Photovoltaic module; 302. Thermoelectric generator; 303. Charge controller; 304. Battery pack; 401. Temperature sensor; 402. Heating component; 403. Thermal conductive film; 404. Heat insulation film; 405. Control unit; 501. Ventilation port; 502. Ventilation valve; 503. Dustproof net; 504. Fan. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] First Intelligent Implementation Example

[0030] like Figures 1 to 2As shown, a new energy power transformer with anti-frost capability includes a housing 1. Multiple receiving cavities 101 are provided within the sidewalls of the housing 1, and each receiving cavity 101 is filled with phase change energy storage material 2. A photovoltaic module 301 covers the top outer surface of the housing 1. Multiple heat sinks 102 are connected to the housing 1, and thermoelectric generators 302 are embedded in the outer surface of each heat sink 102. The photovoltaic module 301 and the thermoelectric generators 302 are electrically connected to a battery pack 304 via a charging controller 303. A temperature sensor 401 is installed within each receiving cavity 101. A heating component 402 is embedded in the sidewall of the receiving cavity 101 near the outside. The battery pack 304 is electrically connected to the heating component 402 via a control unit 405. The temperature sensor 401 controls the heating component 402 to start or stop based on a preset lower temperature limit via the control unit 405.

[0031] like Figures 1 to 2 As shown, multiple cavities 101 within the sidewall of the housing 1 are filled with phase change energy storage material 2. The phase change energy storage material 2 possesses unique thermophysical properties. During the day, when temperatures are high, it absorbs heat from the surrounding environment (such as heat generated by the transformer or external heat) and undergoes a phase change, storing the heat as latent heat. At night or when the ambient temperature drops, the phase change energy storage material 2 releases the previously stored heat, maintaining a relatively stable temperature within the cavities 101 and preventing frost formation due to excessively low temperatures. The photovoltaic modules 301 covering the top outer surface of the housing 1 absorb solar energy and convert it into electrical energy under sunlight during the day. This electrical energy is rectified and regulated by the charge controller 303 before being stored in the battery pack 304. Heat sinks 102 connected to the housing 1 dissipate heat generated by the transformer. Thermoelectric generators 302 embedded on the outer surface of the heat sinks 102 generate electrical energy using the temperature difference between the heat sinks 102 and the external environment. The electrical energy generated by the thermoelectric generator 302 is also processed by the charge controller 303 and then stored in the battery pack 304. Energy is harvested through both the photovoltaic module 301 and the thermoelectric generator 302 to provide power support for subsequent anti-frost operations, reducing dependence on the external power grid.

[0032] like Figures 1 to 2As shown, a temperature sensor 401 installed inside the receiving cavity 101 monitors the temperature inside the receiving cavity 101 in real time and transmits the temperature signal to the control unit 405. The control unit 405 analyzes and judges the temperature signal fed back by the temperature sensor 401 according to the preset lower limit. When the temperature inside the receiving cavity 101 is lower than the preset lower limit, the control unit 405 will issue a command to the battery pack 304 to power the heating component 402 and start the heating component 402. The heating component 402 generates heat to heat the receiving cavity 101 and prevent frost from forming due to excessively low temperature. When the temperature inside the receiving cavity 101 rises back to a suitable range (above the preset lower limit), the control unit 405 will issue another command to turn off the heating component 402 and stop heating. This intelligent temperature monitoring and heating control method can ensure the anti-frost effect while avoiding unnecessary heating and saving energy.

[0033] like Figures 1 to 2 As shown, the area where the receiving cavity 101 is located is close to or covers the frost-prone areas of the housing 1. These frost-prone areas are defined as the connection between the housing 1 and the sleeve, the bottom of the housing 1, corners, and gaps in the housing 1. Due to their structural characteristics, these areas are more prone to frost formation in low-temperature environments. When the ambient temperature decreases, the phase change energy storage material 2 inside the receiving cavity 101 releases the stored heat. This heat is conducted through the housing 1 to these frost-prone areas, maintaining a relatively stable temperature in these areas and preventing frost formation. Simultaneously, if the heat released by the phase change energy storage material 2 is insufficient to maintain the temperature, the temperature sensor 401 detects that the temperature is below a preset lower limit, and the control unit 405 activates the heating component 402 (flexible graphene heating film). The heat generated by the heating component 402 is also focused on these frost-prone areas, achieving precise anti-frost protection.

[0034] like Figures 1 to 2 As shown, heat sinks 102 are disposed on both outer walls of the housing 1 and located outside the area of ​​the receiving cavity 101. During operation, the transformer generates heat, and the main function of the heat sinks 102 is to dissipate this heat, preventing the internal temperature of the transformer from becoming too high. By placing the heat sinks 102 outside the area of ​​the receiving cavity 101, thermal interference between the heat sinks 102 and the phase change energy storage material 2 and the heating assembly 402 within the receiving cavity 101 is avoided. On the one hand, the heat sinks 102 can efficiently dissipate heat from inside the transformer to the external environment, ensuring that the transformer operates within its normal operating temperature range; on the other hand, the phase change energy storage material 2 and the heating assembly 402 within the receiving cavity 101 can focus on maintaining the temperature of areas prone to frost, without interfering with each other, ensuring that the entire transformer can work efficiently and collaboratively in terms of temperature control and anti-frost measures.

[0035] like Figures 1 to 2As shown, the photovoltaic module 301 is a flexible perovskite photovoltaic film. It covers the top outer surface of the housing 1. The flexible perovskite photovoltaic film has high photoelectric conversion efficiency and good flexibility, which allows it to better fit the surface of the housing 1 and make full use of the space at the top of the housing 1. Under sunlight during the day, the flexible perovskite photovoltaic film converts solar energy into electrical energy. This electrical energy is rectified and regulated by the charge controller 303 before being stored in the battery pack 304. The battery pack 304 provides power to devices such as the heating module 402, realizing a self-powered anti-frost system, reducing dependence on the external power grid and lowering operating costs.

[0036] like Figures 1 to 2 As shown, the heating component 402 is a flexible graphene heating film, which has advantages such as high heating efficiency, fast response speed, and low energy consumption. When the temperature sensor 401 detects that the temperature inside the receiving cavity 101 is lower than a preset lower limit, the control unit 405 activates the flexible graphene heating film, which can quickly convert electrical energy into heat energy to heat the easily frosted areas and prevent frost formation. The contact surface between the flexible graphene heating film and the phase change energy storage material 2 has raised or recessed textures. This texture design increases the contact area between the heating film and the phase change energy storage material 2, improving the thermal conductivity between them. Heat can be transferred more quickly and evenly from the heating film to the phase change energy storage material 2 and the easily frosted areas, improving heating efficiency, further enhancing the anti-frost effect, and also reducing energy consumption.

[0037] Second embodiment

[0038] like Figure 3As shown, the various accommodating cavities 101 are connected by a thermally conductive film 403, with both ends of the thermally conductive film 403 extending into the phase change energy storage material 2. During transformer operation, the phase change energy storage material 2 in different accommodating cavities 101 may have temperature differences due to varying degrees of heat absorption or release. The thermally conductive film 403 has excellent thermal conductivity, enabling it to quickly transfer heat from the phase change energy storage material 2 in the higher-temperature accommodating cavity 101 to the lower-temperature accommodating cavity 101, thus making the temperature of the phase change energy storage material 2 in each accommodating cavity 101 more uniform, improving heat utilization efficiency, and ensuring the synergy of the entire transformer casing 1 in terms of anti-frost and temperature regulation. The thermally conductive film 403 is connected to the heat sink 102. When the internal temperature of the transformer is too high and the phase change energy storage material 2 absorbs heat to a certain limit, the thermally conductive film 403 can transfer the excess heat in the accommodating cavity 101 to the heat sink 102. The heat sink 102 has a large heat dissipation area, which can dissipate heat to the external environment, thereby reducing the internal temperature of the transformer and preventing damage to the transformer due to excessive temperature. It also indirectly maintains the temperature stability inside the housing cavity 101, which helps to prevent frost. Thermal insulation films 404 are bonded to both sides of the thermal conductive film 403. The thermal insulation film 404 near the heat sink 102 has through holes for the heat sink 102 to pass through. The function of the thermal insulation film 404 is to reduce unnecessary heat loss to the outside and improve the utilization efficiency of heat during the heat transfer process of the thermal conductive film 403. When heat dissipation is not required, the thermal insulation film 404 can effectively prevent heat from being directly lost to the external environment through the thermal conductive film 403, ensuring that more heat can be used to maintain the temperature inside the housing cavity 101 and prevent frost. When heat dissipation is required, heat is transferred through the thermal conductive film 403 to the heat sink 102, and then dissipated by the heat sink 102. The through-hole design of the thermal insulation film 404 ensures that the connection between the heat sink 102 and the thermal conductive film 403 and the heat transfer are unobstructed.

[0039] like Figure 3As shown, the housing 1 has at least two ventilation openings 501. An adjustable ventilation valve 502 is installed at the opening of each ventilation opening 501. A dustproof screen 503 and a fan 504 are installed inside each ventilation opening 501, and the ventilation valve 502 and fan 504 are electrically connected to the control unit 405. A temperature sensor 401 is installed inside the receiving cavity 101. When the temperature sensor 401 detects that the temperature inside the receiving cavity 101 is higher than a preset upper temperature limit, it will send a signal to the control unit 405. After receiving the signal, the control unit 405 will issue a command to open the ventilation valve 502 and the fan 504. After the ventilation valve 502 opens, the fan 504 starts operating, and outside air enters the housing 1 through the ventilation opening 501. At the same time, hot air inside the housing 1 is discharged through the other ventilation opening 501, forming air convection, accelerating the heat dissipation process, and quickly reducing the internal temperature of the transformer. The function of the dustproof screen 503 is to prevent external dust and debris from entering the housing 1, avoiding dust accumulation that could affect the normal operation of the transformer and its heat dissipation effect. When the temperature inside the housing 101 drops to a suitable range (below the preset upper temperature limit), the control unit 405 will close the ventilation valve 502 and the fan 504 to stop ventilation and heat dissipation, so as to save energy and maintain the relative stability of the temperature inside the housing 1.

[0040] In summary, this embodiment achieves efficient heat transfer and coordinated heat dissipation between the accommodating cavities 101 and with the heat sink 102 through the thermal conductive film 403, and achieves intelligent ventilation, heat dissipation and dust prevention through the related structure of the vent 501, jointly ensuring that the transformer operates within a suitable temperature range and achieving a reliable anti-frost function.

[0041] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A new energy power transformer capable of preventing condensation, comprising a shell (1), characterized in that: A plurality of accommodating cavities (101) are arranged in the side wall of the shell (1), and the accommodating cavities (101) are filled with phase change energy storage materials (2); A photovoltaic assembly (301) is arranged on the top outer surface of the shell (1), a plurality of heat dissipation fins (102) are connected to the shell (1), and the outer surface of the heat dissipation fins (102) is embedded with thermoelectric power generation fins (302); the photovoltaic assembly (301) and the thermoelectric power generation fins (302) are electrically connected with a battery pack (304) through a charging controller (303); A temperature sensor (401) is arranged in the accommodating cavity (101), and a heating assembly (402) is embedded in the side wall of the accommodating cavity (101) close to the outside; the battery pack (304) is electrically connected with the heating assembly (402) through a control unit (405), and the temperature sensor (401) controls the start or stop of the heating assembly (402) through the control unit (405) and according to a preset lower limit temperature.

2. The anti-condensation new energy power transformer according to claim 1, characterized in that: The area where the accommodating cavities (101) are located is close to or covers the frost-prone area of the shell (1), and the frost-prone area is arranged at the connection between the shell (1) and the sleeve, the bottom of the shell (1), the corner of the shell (1), and the gap of the shell (1).

3. The anti-condensation new energy power transformer according to claim 2, characterized in that: The heat dissipation fins (102) are arranged on the outer walls of the shell (1) on both sides and outside the area where the accommodating cavities (101) are located.

4. The anti-condensation new energy power transformer according to claim 1, characterized in that: The photovoltaic assembly (301) is a flexible perovskite photovoltaic film.

5. The anti-condensation new energy power transformer according to claim 1, characterized in that: The heating assembly (402) is a flexible graphene heating film, and the contact surface of the flexible graphene heating film and the phase change energy storage material (2) is provided with a convex or concave texture.

6. The anti-condensation new energy power transformer according to claim 1, characterized in that: The heat conduction films (403) are connected between the accommodating cavities (101), the two ends of the heat conduction films (403) extend into the phase change energy storage material (2), the heat conduction films (403) are tightly clamped in the shell (1), the heat conduction films (403) are connected with the heat dissipation fins (102), and the heat insulation films (404) are bonded on the two sides of the heat conduction films (403), and the heat insulation films (404) close to the heat dissipation fins (102) are provided with through holes for the heat dissipation fins (102) to pass through.

7. The anti-condensation new energy power transformer according to claim 1, characterized in that: Ventilation openings (501) are arranged on the shell (1), adjustable-opening ventilation valves (502) are mounted at the openings of the ventilation openings (501), dust screens (503) and fans (504) are arranged in the ventilation openings (501), and the number of the ventilation openings (501) is at least two; the ventilation valves (502) and the fans (504) are electrically connected with the control unit (405), and the control unit (405) controls the opening or closing of the ventilation valves (502) and the fans (504) according to the feedback of the temperature sensors (401) in the accommodating cavities (101) and a preset upper limit temperature.

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