Power conditioner for solar power generation
By introducing a ventilation path design within a sealed casing into the power regulator used for solar power generation, heat is concentrated and efficiently exchanged, resolving the contradiction between waterproofing and dustproofing and miniaturization. This achieves miniaturization and efficient cooling of the equipment, extending the lifespan of components.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ASAHI KASEI KOGYO KABUSHIKI KAISHA
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-19
AI Technical Summary
Existing power regulators for solar power generation struggle to balance waterproofing and dustproofing with miniaturization, and the air circulation cooling method inside the sealed casing makes it difficult to miniaturize the equipment.
The design employs a closed-loop ventilation path within the casing. By combining the air source, heating components, and heat exchangers, heat is concentrated and exchanged through an efficient airflow path, reducing the amount of air and space required inside the casing.
It achieves miniaturization and efficient cooling of the power regulator while ensuring waterproof and dustproof performance, reducing the temperature of heat-generating components, extending component life, and facilitating installation in confined spaces.
Smart Images
Figure CN224265329U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a power regulator for solar power generation. Background Technology
[0002] A power conditioner ("PCS") for solar power generation, which converts the generated electricity input from solar panels and other power generation units, contains multiple heat-generating components. Therefore, various cooling methods have been studied. For example, methods that cool the inside of the power conditioner by taking in outside air (here, we call it the ventilation method) and methods that circulate the air inside the sealed power conditioner housing to promote heat dissipation from the heat-generating components (here, we call it the internal air circulation method) are known.
[0003] Outdoor power regulators require waterproofing and dustproofing. When using ventilation systems, it's necessary to ensure waterproofing and dustproofing while simultaneously drawing in outside air, often resulting in complex structures such as double-layered casings. Therefore, depending on the capacity range of the power regulator, most systems employ a sealed casing and internal air recirculation method.
[0004] [Existing technical documents]
[0005] [Patent Literature]
[0006] Patent Document 1: Japanese Patent Application Publication No. 2016-67164
[0007] Patent Document 2: Japanese Patent Application Publication No. 2008-60515 Utility Model Content
[0008] [The problem that the utility model aims to solve]
[0009] Patent document 1 describes a method of circulating air by blowing air from the lower part of the housing upwards using a circulating fan installed inside the housing.
[0010] In addition, Patent Document 2 describes a method in which a cooling body is taken in through a cooling pipe connected to the outside of the housing, the cooling body is thermally connected to the cooling fins, and the internal air is brought into contact with the cooling fins by a circulating fan, thereby cooling the internal air of the housing.
[0011] The methods described in Patent Documents 1 and 2 involve a sealed housing that is waterproof and dustproof. However, in order to circulate air throughout the housing and improve the cooling effect inside the power regulator, it is necessary to increase the amount of air inside the housing and to have space inside the housing for the circulation of a large amount of air, thus making it difficult to miniaturize the power regulator.
[0012] Therefore, the purpose of this utility model is to provide a power regulator for solar power generation that is waterproof, dustproof, and miniaturized.
[0013] [Methods used to solve problems]
[0014] That is, the present invention is as follows. [1]
[0016] A power regulator for solar power generation is characterized in that the power regulator has a sealed housing that houses a wind source, a heating element, and a heat exchanger, and the ventilation path for circulating air flow within the housing includes the wind source, the heating element, and the heat exchanger. [2]
[0018] According to the power regulator for solar power generation described in [1], the portion of the housing located in the ventilation path functions as a heat exchanger. [3]
[0020] According to the power regulator for solar power generation described in [1] or [2], the ventilation path is characterized in that at least a portion of it is located inside a duct, the duct having a thermal conductivity of less than 20 W / m·K. [4]
[0022] According to the power regulator for solar power generation described in [1] or [2], the housing is characterized in that the housing is made of a resin used for heat exchange between the gas inside and outside the housing.
[0023] [Utility Model Effect]
[0024] This invention has the above-described structure, and therefore can provide a power regulator for solar power generation that ensures waterproof and dustproof performance and is miniaturized. Attached Figure Description
[0025] Figure 1A This is a perspective view showing an example of the power regulator of this embodiment, omitting the entire front surface of the housing.
[0026] Figure 1B This is an explanatory diagram of the pipeline.
[0027] Figure 2 yes Figure 1A The top view of the power regulator is a diagram illustrating the ventilation path within the housing.
[0028] Figure 3 This diagram shows a radiator used as a heat exchanger.
[0029] Figure 4A This is a diagram illustrating an example of the internal air temperature inside a casing where there is no ventilation path.
[0030] Figure 4B This is a diagram illustrating an example of the internal air temperature within a housing with ventilation paths.
[0031] Figure 5A This is a diagram of a housing with a ventilation path partially set inside the duct, showing an example of the internal air temperature inside the housing when using a duct with high thermal conductivity.
[0032] Figure 5B This is a diagram of a housing with a ventilation path partially set inside the duct, showing an example of the internal air temperature inside the housing when using a duct with low thermal conductivity.
[0033] Figure 6A This is a diagram illustrating an embodiment.
[0034] Figure 6B This is a diagram illustrating an embodiment.
[0035] Figure 6C This is a diagram illustrating an embodiment.
[0036] Figure 6D This is a diagram illustrating an embodiment.
[0037] Figure 7A These are diagrams illustrating an embodiment.
[0038] Figure 7B These are diagrams illustrating an embodiment.
[0039] Figure 7C This is a diagram illustrating an embodiment.
[0040] Figure 7D These are diagrams illustrating an embodiment.
[0041] Figure 8 These are figures illustrating the embodiments and comparative examples.
[0042] Explanation of reference numerals in the attached figures
[0043] 1 Power Regulator
[0044] 2 shells
[0045] 3 wind sources
[0046] 4 heating components
[0047] 5 heat exchangers
[0048] 6 ventilation paths
[0049] 7 pipes
[0050] 71 air intake
[0051] 72 intake pipe
[0052] 73 exhaust ports
[0053] 74 Exhaust Pipe
[0054] 8 Hot Topics Detailed Implementation
[0055] The following describes a method for implementing this invention (hereinafter referred to as "this embodiment"). This invention is not limited to the following embodiment and can be implemented through various modifications within its scope.
[0056] Power conditioner for solar power generation
[0057] The power regulator for solar power generation in this embodiment includes a sealed housing that houses the air source, the heating element, and the heat exchanger. The ventilation path for the circulating air flow within the housing includes the air source, the heating element, and the heat exchanger. In this specification, the circulating air is sometimes referred to as internal circulating air.
[0058] The aforementioned housing can also accommodate components other than the air source, heating element, and heat exchanger.
[0059] use Figure 1A , Figure 1B , Figure 2 This embodiment describes the power regulator for solar power generation.
[0060] The power regulator 1 has a sealed housing 2, within which are multiple heating elements 4. A ventilation path 6 is formed within the housing 2, allowing air to circulate by activating a fan source 3. The ventilation path 6 can be formed using a duct 7, or it can be formed without using a duct 7.
[0061] (case)
[0062] The power regulator for solar power generation in this embodiment may have one or more housings, but one is preferred.
[0063] There are no particular limitations on the material of the shell; examples include metal, resin, and rubber. Additionally, a surface coating can be applied. Furthermore, the entire shell can be made of the same material, or different materials can be used for different parts.
[0064] In the power regulator for solar power generation in this embodiment, the portion of the housing 2 located in the ventilation path 6 and functioning as a heat exchanger 5 is preferably made of a material with high thermal conductivity.
[0065] The portion of the housing 2 that functions as the heat exchanger 5 preferably satisfies the requirements described in the heat exchanger 5 section below.
[0066] The aforementioned shell 2 is a sealed type. Alternatively, small pores may be present as long as they provide waterproofing and dustproofing. For example, it could be a foam with small pores, a foam with independent air bubbles, etc.
[0067] The shape of the aforementioned housing 2 is not particularly limited and can be approximately a cuboid, etc. From the viewpoint of being installed on an outdoor wall, a planar shape is preferred.
[0068] In addition, for easier observation, Figures 1A to 3 and Figures 6A to 8 The diagram schematically illustrates the shape with the front cover removed. Figures 1A to 3 and Figures 6A to 8 The housing is used as a generally rectangular, sealed housing closed by the front cover. Furthermore, since the power regulator for solar power generation in this embodiment is used vertically, the upper cover is referred to as the front cover in this figure. Also, since the power regulator for solar power generation in this embodiment is used vertically, the cover is positioned on the upper side in the drawings, but in this specification, it is referred to as the front cover.
[0069] (Ventilation path)
[0070] Ventilation path 6 is described below. Recirculated air drawn in from an air inlet 71 near a heat-generating component 4 flows through an air intake duct 72 towards the air source 3. Figure 1A , Figure 1B , Figure 2 Then, through the air source 3, through the exhaust pipe 74, exhaust air is emitted from the exhaust port 73 toward the heating element 4 near the exhaust port. Figure 1A , Figure 1B , Figure 2 The exhausted recirculated air flows from the exhaust port 73 toward the intake port 71 within the housing. A heat exchanger 5 is provided near the exhaust port 73 in the ventilation path 6 through the intake port 71, the air source 3, and the exhaust port 73, returning to the intake port 71. This allows for the efficient release of heat from inside the housing 2 to the outside via the heat exchanger 5. Figure 2 , Figure 3 ).
[0071] in addition, Figure 1B The intake pipe 72 is closed by the front cover.
[0072] Conventional closed-type power regulators rely on the overall airflow within the housing for cooling. This requires increasing the amount of air inside the housing and creating space for the large volume of air to circulate, limiting miniaturization. While conventional methods rely on increasing the amount of air inside the housing for heat dissipation, this invention presents a novel approach: using a smaller amount of air flowing at high speed along a specific path to concentrate heat and effectively release it.
[0073] In this embodiment, the power regulator 1 includes an air source 3, a heating element 4, and a heat exchanger 5 in the ventilation path 6 for circulating internal air flow within the sealed housing 2. Figure 1A , Figure 1B , Figure 2 Here, the distribution of heat inside the shell will be explained. Figure 4A , Figure 4B This is a graph showing the temperature of the air inside the casing. The darker the color, the higher the temperature.
[0074] When air is circulated within the entire casing, the heat generated inside the casing diffuses to the entire casing. Figure 4A On the other hand, if a heating element 4 is provided within the ventilation path 6, the heat generated by the heating element 4 can be concentrated in the ventilation path 6. Figure 4B For example, in the absence of Figure 4A In the case where the ventilation path is such that air circulates throughout the casing, outside the heating components of the casing ( Figure 4A The area indicated by the circle also accumulates heat. On the other hand, in the area where ventilation path 6 is set... Figure 4B In this example, heat is concentrated within the ventilation path 6, and no heat accumulates outside the ventilation path 6. Furthermore, a particularly hot spot 8 is generated near the heating element 4. By placing a heat exchanger 5 near the hot spot 8, heat can be released to the outside of the casing extremely efficiently.
[0075] The power regulator 1 according to this embodiment reduces the amount of air present inside the housing compared to conventional power regulators that allow air to flow throughout the housing, and eliminates the need for space for air to flow inside the housing, thus enabling miniaturization. For example, by converging the heating element 4 in the ventilation path 6 and providing a low-heat-generating element outside the ventilation path 6, further miniaturization is possible.
[0076] In addition, it can reduce the temperature of the heat-generating component 4 within the ventilation path 6, thereby suppressing the thermal degradation of the component and extending the lifespan of the heat-generating component 4.
[0077] Furthermore, the power regulator 1 of this embodiment is small, so even in places with limited space such as outdoor areas of densely populated residential areas, the installation work becomes easy and can be easily installed.
[0078] The ventilation path 6 described above can be a path through which air flows within the housing 2 at a wind speed of 3 m / s or higher (preferably 5 m / s or higher). The ventilation path 6 is a circulation path returning from a specific location within the housing 2 to the same location. The ventilation path 6 in the housing 2 can be a single path or multiple paths, but from the viewpoint of miniaturization, a single path is preferred.
[0079] The ventilation path 6 mentioned above can also be a path where the flow merges after branching midway.
[0080] Regarding the ventilation path 6 described above, the wind speed within the path can be constant or varied. The wind speed within the ventilation path 6 satisfies the aforementioned wind speed at any point. For example, a location with a locally high wind speed that is not part of the circulation path is not considered a part of the ventilation path 6.
[0081] The ventilation path 6 mentioned above refers to a specific path within the housing. For example, the flow of air that moves randomly within the housing is not suitable for the ventilation path 6 mentioned above.
[0082] Within the space of the aforementioned housing 2, there may be areas that are not part of the ventilation path 6 (i.e., areas where the wind speed is less than 3 m / s). The volume of the ventilation path 6 relative to 100% of the total volume of the space within the aforementioned housing 2 may be 30% to 90% of the volume, or 40% to 85% of the volume.
[0083] The ventilation path 6 described above, from the viewpoint of being able to set the path in a specific location, can be at least partly a path through the duct 7. Figure 1A , Figure 1B , Figure 2 Alternatively, the ventilation path 6 can be a path that passes entirely within the duct. From the viewpoint of making heat more easily concentrated within the ventilation path 6 by causing air to flow at high speeds within it, the length ratio of the ventilation path 6 within the duct 7 to 100% of the total length of the ventilation path 6 is preferably 50% or more, more preferably 60% or more, and even more preferably 70% or more. Furthermore, from the viewpoint of miniaturizing the power regulator, it can be less than 100% or less than 90%.
[0084] (Wind Source)
[0085] The number of air sources 3 installed in the ventilation path 6 can be one or more. From the viewpoint of miniaturization, one is preferred.
[0086] As for air source 3, there are no particular limitations as long as it is a device that generates a pressure difference, such as a blower fan, etc. Figure 1A , Figure 1B , Figure 2 ).
[0087] To achieve miniaturization, the configuration of internal equipment is sometimes limited in enclosed housings. For example, in... Figure 1A , Figure 1B , Figure 2 In some examples, the air source 3 is sometimes positioned near the outer periphery of the housing 2 (i.e., Figure 2 (near the upper right corner). According to this embodiment, the power regulator 1 can concentrate air to the heat-generating component 4 through the ventilation path 6 and can collect heat in the ventilation path 6, thus achieving miniaturization and cooling efficiency regardless of the location of the air source 3.
[0088] (Heating component)
[0089] The number of heating elements 4 installed in the ventilation path 6 can be one or more.
[0090] Examples of the aforementioned heat-generating components 4 include a DC reactor that smooths the DC current input from the solar power generation panel, an inverter that converts / adjusts the input DC power to AC power, an AC reactor that smooths the output AC power, a capacitor, a power control unit, and a display.
[0091] The aforementioned heating element 4 is installed within the ventilation path 6.
[0092] You can place only the heating element with the highest heat output in ventilation path 6, or you can place the top 3 heating elements with the highest heat output inside the housing in ventilation path 6. Figure 1A , Figure 1B , Figure 2 , Figure 3 Alternatively, all heating components 4 can be placed in the aforementioned ventilation path 6.
[0093] When at least a portion of the ventilation path 6 is disposed within the duct 7, all of the heating components 4 disposed in the ventilation path are preferably disposed within the duct 7. Figure 1A , Figure 1B , Figure 2 , Figure 3 ).
[0094] When at least a portion of the ventilation path 6 is disposed within the duct 7, the heating element 4 can be located at the inlet or outlet of the duct, or it can be located in the middle of the duct. From the viewpoint that heat can be further accumulated within the ventilation path by concentrating high-velocity circulating air into the heating element 4, it is preferable to arrange the heating element 4 at both the inlet (i.e., air inlet 71) and outlet (i.e., exhaust outlet 73) of the duct. Figure 1A , Figure 1B , Figure 2 , Figure 3 For example, in the case of three heating elements, two air inlets 71 can be provided corresponding to the positions of the two heating elements 4, and the ventilation paths can be merged in the middle of the air intake pipe to discharge the circulating air from the exhaust port 73 corresponding to the position of the remaining heating element.
[0095] (Heat exchanger)
[0096] The heat exchanger 5 described above is a component that releases heat from the inside of the housing to the outside. The number of heat exchangers 5 provided in the ventilation path 6 can be one or more.
[0097] Examples of heat exchangers include radiators, and for instance, the portion of the housing located in ventilation path 6 can also function as a heat exchanger. Figure 3 The hot spot 8 is near the heating element 4. Figure 4B An example of a radiator serving as a heat exchanger 5 located near the ventilation path 6. Instead of... Figure 3 In the example of the radiator, the part of the housing 2 where the radiator is mounted is made into a component with high thermal conductivity, which enables this part to function as a heat exchanger. Figure 2 ).
[0098] As described above, by providing ventilation path 6, a hot spot 8 with a particularly high temperature is generated near the heating element 4. The heat exchanger is preferably located at the hot spot 8.
[0099] The aforementioned hot spots can be, for example, set as areas within ventilation path 6 where the indoor air temperature is 3°C (preferably 5°C) higher than that outside ventilation path 6.
[0100] (pipeline)
[0101] Preferably, part or all of the ventilation path 6 is located inside the duct 7.
[0102] The aforementioned pipe can be a single pipe, or multiple pipes connected together, or multiple pipes can exist at intervals. For example, it can be a pipe with a path from the air inlet 71 to the exhaust outlet 73, or it can be a structure formed by connecting an air inlet pipe 72 with an air inlet 71 and an exhaust pipe 74 with an exhaust outlet 73. Figure 1B ).
[0103] If the aforementioned duct 7 is used, the heat concentrated in the ventilation path 6 is difficult to release outside the path, thus further concentrating the heat within the ventilation path. Furthermore, by installing components within the duct, the number of mounting components within the housing can be reduced, enabling further miniaturization. For example, by installing the air source 3 within the duct, the air source mounting bracket can be reduced.
[0104] The inventors have discovered that by improving the thermal insulation of pipe 7, heat can be further concentrated within the ventilation path. Figure 5A It is shown as Figure 1A , Figure 1B , Figure 2 The diagram shows the internal air temperature of the example of a resin with high thermal conductivity (i.e., low insulation) used in the conduit 7 of the power regulator. Figure 5B This is a graph showing the internal air temperature of an example using a resin foam with low thermal conductivity (i.e., high insulation). Figure 5A In the middle, heat leaks slightly from duct 7 within ventilation path 6. Figure 5A (roughly quadrilateral). On the other hand, in pipes with high thermal insulation... Figure 5B In this system, heat leakage to the outside of the ventilation path 6 can be suppressed to a very low level, and heat can be concentrated around the heat-generating component 4 to form a hot spot 8 with a higher temperature. Figure 5B In this system, a high cooling effect can be achieved by configuring heat exchangers around hotspot 8.
[0105] The thermal conductivity of the aforementioned pipe 7 is preferably 20 W / m·K or less, more preferably more than 0 W / m·K and less than 15 W / m·K, and even more preferably 0.001 to 10 W / m·K. Alternatively, it can be 0.15 W / m·K or less.
[0106] The material of the aforementioned pipe 7 can include metal, resin, rubber, etc., and is preferably composed of a resin foam with a thermal conductivity within the aforementioned range. Examples of such resin foams include polystyrene foam, polyolefin foam, polyurethane foam, polyethylene terephthalate foam, modified polyphenylene ether foam, polyethylene foam, polypropylene foam, polymethacrylamide foam, and polyamide foam. Among these, modified polyphenylene ether foam is preferred from the viewpoint of excellent thermal insulation and flame retardancy.
[0107] The arrangement order of the air source 3, heating element 4, and heat exchanger 5 in the ventilation path 6 is not particularly limited. For example, a heat exchanger can also be installed between the heating element and the air source.
[0108] Here, "installed in the ventilation path" means configured in a manner that at least a portion of it contacts the ventilation path. Examples include the air source 3 within duct 7, and the wall surface of the casing that contacts the ventilation path. Figure 2 ).
[0109] In addition to the housing 2 described above, the power regulator 1 of this embodiment may also have other components such as a heat exchanger or radiator installed on the outside of the housing.
[0110] The power conditioner 1 of this embodiment can be applied to power conditioners used for solar power generation.
[0111] [Use of Resin]
[0112] The resin used in this embodiment is a resin used for heat exchange between the internal and external air of the housing having a heating element. Preferably, the resin used is the resin used in the housing of the power regulator of this embodiment for heat exchange between the inside and outside of the aforementioned pipes in the power regulator of this embodiment.
[0113] Examples of housings having the aforementioned heat-generating components include the housing in the power regulator of this embodiment, the housing containing an electronic board with a component that generates a large amount of heat, and the housing containing a heat source such as a heater.
[0114] Examples of components that collect the aforementioned heat include the aforementioned pipe in the power regulator of this embodiment, and the heat-insulating component that surrounds the aforementioned electronic substrate on which the heat-generating component is mounted.
[0115] Examples of resins mentioned above include polystyrene, polyolefins, polyurethanes, polyethylene terephthalate, modified polyphenylene ether, polypropylene, polymethacrylamide, and polyamide. Among these, modified polyphenylene ether is preferred from the viewpoint of excellent flame retardancy.
[0116] The above-mentioned resin is preferably used as a resin foam.
[0117] In the power regulator of this embodiment described above, by using resin in the pipe, the movement of heat inside and outside the pipe can be suppressed, and heat can be collected inside the pipe.
[0118] In an electronic substrate equipped with the aforementioned heat-generating components, by surrounding the heat-generating components with a heat insulation element, the movement of heat inside and outside the heat insulation element can be suppressed, and the heat can be concentrated inside the heat insulation element.
[0119] [Example]
[0120] The present invention will now be described in more detail based on the embodiments, but the present invention is not limited to these embodiments.
[0121] Through simulation, measurement Figures 6A to 6D , Figures 7A to 7D The internal air temperature of the power regulator, etc. Figure 8 This is the location where the temperature was measured in the above simulation. In addition, (1) the internal air temperature outside the ventilation path refers to the internal air temperature of the part on the back side of the casing that is not part of the ventilation path.
[0122] The analysis conditions are as follows.
[0123] • Analyze the temperature of the heating components and the internal air temperature within the power regulator.
[0124] • Assuming heat is generated from a specific component
[0125] • The heat dissipation path is based on the following pattern.
[0126] (1) Heat conduction from the heating element to the housing via the substrate
[0127] (2) Heat transfer from the heating element to the air inside the box
[0128] (3) Heat conduction from the gas inside the shell to the shell and heat exchanger
[0129] (4) Heat transfer from the shell and heat exchanger to the outside air
[0130] • A circulating fan inside the casing blows air in a controlled manner, thereby maximizing heat transfer efficiency.
[0131] (Example 1)
[0132] Set as Figures 6A to 6D The power regulator of Example 1 uses a modified polyphenylene ether foam with a thermal conductivity of 0.034 W / m·K as the ductwork connecting the intake and exhaust ducts. The housing within the ventilation path in contact with the hot spot serves as the heat exchanger in the power regulator of Example 1. The results are shown in Table 1.
[0133] (Example 2)
[0134] Set as Figures 6A to 6D The power regulator of Example 2 uses a housing within the ventilation path that contacts the hot spot as a heat exchanger. The results are shown in Table 1.
[0135] (Example 3)
[0136] Set as Figures 6A to 6DThe power regulator of Example 3 uses a housing within the ventilation path that contacts the hot spot as a heat exchanger. The results are shown in Table 1.
[0137] (Example 4)
[0138] Set as Figures 7A to 7D The power regulator of Example 4 uses a modified polyphenylene ether foam with a thermal conductivity of 0.034 W / m·K to connect the intake and exhaust pipes. The power regulator of Example 4 uses a radiator located at the hot spot as the heat exchanger. The results are shown in Table 1.
[0139] (Comparative Example 1)
[0140] Except for the absence of ductwork, the analysis was performed in the same manner as in Example 1. No ventilation path was formed within the housing, and air circulated randomly throughout the housing. The results are shown in Table 1.
[0141] [Table 1]
[0142]
[0143] It can be confirmed that if the thermal conductivity of the duct is high, the temperature of the indoor air outside the ventilation path will be higher.
[0144] Based on the results of the internal air temperature around the exhaust port in Table 1 (2), it can be confirmed that by cutting off the heat flow to the outside of the ventilation path through the lower thermal conductivity, heat from the heat-generating components can be efficiently recovered.
[0145] Based on the comparison between Example 1 and Example 4, it can be confirmed that the radiator, as a heat exchanger, is effective for heat exchange between internal and external air that uses efficiently recovered heat as a driving force.
Claims
1. A power regulator for solar power generation, characterized in that, The power regulator has a sealed housing that houses the air source, heating element, and heat exchanger. The ventilation path for circulating airflow within the housing includes the air source, the heating element, and the heat exchanger.
2. The power regulator for solar power generation according to claim 1, characterized in that, The portion of the housing located in the ventilation path functions as a heat exchanger.
3. The power regulator for solar power generation according to claim 1 or 2, characterized in that, At least a portion of the ventilation path is located inside a duct. The thermal conductivity of the pipeline is below 20 W / m·K.
4. The power regulator for solar power generation according to claim 1 or 2, characterized in that, The shell is made using a resin for heat exchange between the air inside and outside the shell.