A light storage integrated box-type substation

Abstract

The application relates to the technical field of box-type substations, and discloses a light-storage integrated box-type substation which comprises a box body and multiple box doors, the box doors are rotationally connected to the box body, a placing groove is formed in the box body, a containing groove is formed in the box body, multiple containing strips are arranged in the containing groove, a flow channel is formed between the multiple containing strips, the flow channel is obliquely arranged, the distance between the flow channel and the ground gradually increases along the direction from the sunny surface to the shady surface, the height of the flow channel in the shady surface is higher than that in the sunny surface, the hot air in the sunny surface automatically flows into the cold air in the shady surface due to the rising of the hot air, the cold air in the shady surface can be mixed into the air in the sunny surface, the temperature difference between the sunny surface and the shady surface of the box body is reduced, the temperature difference between the sunny surface and the shady surface of the box body does not generate an excessively large thermal gradient, and the deformation of the box body is reduced.

Description

Technical Field

[0001] This application relates to the technical field of prefabricated substations, and in particular to a prefabricated substation integrating photovoltaic and energy storage. Background Technology

[0002] A prefabricated box-type substation refers to a unit that integrates photovoltaic power generation devices, energy storage systems (batteries), and traditional box-type substation functional units such as high-voltage switches, transformers, low-voltage power distribution, control and protection devices in a single integrated, prefabricated box. This achieves a "one-stop" power supply solution for photovoltaic-energy storage-power distribution. Box-type substations are usually applied directly near photovoltaic power generation devices to reduce losses caused by the transmission of photovoltaic power generation.

[0003] In related technologies, prefabricated substations include a box body and a door, with the door rotatably connected to the box body, and heat dissipation holes provided on the box body.

[0004] Because prefabricated substations are located directly near photovoltaic power generation devices, they are exposed to direct sunlight for extended periods. The sun-exposed side of the substation is exposed to intense heat while the shady side remains cool, resulting in a significant temperature difference between the sun-exposed and shady sides. This creates a strong thermal gradient, and the long-term uneven thermal field accelerates the deformation of the enclosure, causing gaps to appear between the enclosure and the doors. These gaps become channels for dust and moisture to enter, and can even lead to deformation of the internal support frame, causing some precision equipment to loosen and affecting normal operation. Summary of the Invention

[0005] To address the issue of significant temperature differences between the sun-facing and shaded sides of the enclosure, this application provides an integrated photovoltaic and energy storage prefabricated substation.

[0006] This application provides a photovoltaic-storage integrated prefabricated substation, which adopts the following technical solution: A photovoltaic-storage integrated prefabricated substation includes a prefabricated box and multiple boxes. The boxes are rotatably connected to the box. The box has a placement slot and a receiving slot. Multiple receiving strips are provided in the receiving slots. A flow channel is formed between the multiple receiving strips. The flow channel is inclined. The distance between the flow channel and the ground gradually increases from the sunny side to the shady side.

[0007] By adopting the above technical solution, the distance between the flow channel and the ground gradually increases from the sunny side to the shady side, making the height of the flow channel on the shady side higher than that on the sunny side. Since hot air rises, the hot air on the sunny side will automatically flow into the cold air on the shady side, allowing the cold air on the shady side to mix with the air on the sunny side. This reduces the temperature difference between the sunny and shady sides of the enclosure, preventing an excessive thermal gradient and reducing deformation of the enclosure, thus making the enclosure more stable.

[0008] Optionally, the housing has a heat dissipation hole that connects to the receiving slot. A first bimetallic strip and a second bimetallic strip are provided in the heat dissipation hole. The first bimetallic strip is located on the side of the second bimetallic strip closer to the receiving slot. The first and second bimetallic strips block the opening of the heat dissipation hole. When both the first and second bimetallic strips feel a certain temperature, both the first and second bimetallic strips deform in the direction away from the receiving slot, and the heat dissipation hole opens.

[0009] By adopting the above technical solution, the heat dissipation holes connect to the receiving tank. When the air temperature in the flow channel is high, the first and second bimetallic strips sense a certain temperature. At this time, both the first and second bimetallic strips deform in the direction away from the placement tank, causing the first and second bimetallic strips to open the heat dissipation holes. This allows the hot air in the flow channel to circulate directly with the outside air, thereby reducing the temperature in the flow channel. This prevents the air temperature in the flow channel from becoming too high, and allows the air in the flow channel to stably isolate the direct sunlight temperature from the electrical equipment in the placement tank.

[0010] Optionally, the door is provided with a receiving hole that connects to the receiving groove, the receiving strip is disposed in the receiving hole, and two baffles are slidably connected to the door, allowing air to pass through the flow channel between the two baffles; when the door is closed, the baffles are used to seal the gap between the two doors.

[0011] By adopting the above technical solution, when the staff opens the box door, the two baffles slide towards the receiving hole, so that the baffles do not restrict the opening of the box door; when the staff closes the box door, the two baffles move towards the other box door, so that the baffles can block the gap between the two box doors. In addition, the gap between the two baffles allows air to pass through the flow channel, so that the baffles can restrict the direct flow of outside air into the flow channel, so that the air in the flow channel on the shaded side will not mix with the outside air, so that the air temperature in the flow channel on the shaded side can be kept at a lower temperature. At the same time, it makes it difficult for outside dust and hot air to directly enter the flow channel through the gap between the two box doors. At the same time, the space between the two baffles allows air to flow in the flow channel. At this time, the air in the flow channel at different heights can quickly mix between the two baffles, avoiding the situation where the air in different layers of the flow channel has different heat and produces an excessively large thermal gradient in the vertical direction of the box.

[0012] Optionally, the baffle is provided with a fixed magnet, which is used to attract the fixed magnets of adjacent cabinet doors; when the cabinet door is closed, the fixed magnet drives the baffles of the two adjacent cabinet doors to abut against each other.

[0013] By adopting the above technical solution, when the staff closes the two boxes, the fixed magnet of one box attracts the fixed magnet of the other box, so that the baffle in the box can move towards the other box, so that the two baffles can be smoothly pressed together, and the baffles can stably seal the gap between the two boxes.

[0014] Optionally, a plurality of hydrophilic strips are fixedly connected to the inner wall of the placement groove, and the hydrophilic strips are distributed in a vertical direction.

[0015] By adopting the above technical solution, in desert and other regions where the temperature difference between day and night is large, condensation often occurs on the inner wall of the placement tank. By setting hydrophilic strips on the inner wall of the placement tank, the hydrophilic strips can absorb the condensation, thereby preventing the condensation from flowing along the inner wall of the placement tank and reducing the impact of condensation on electrical equipment.

[0016] Optionally, the housing is provided with a water storage strip, which abuts against multiple hydrophilic strips, and the water storage strip is located in a receiving groove on the shady side.

[0017] By adopting the above technical solution, the water storage strip abuts against multiple hydrophilic strips, allowing the water in the hydrophilic strips to be smoothly collected in the receiving tank on the shaded side. This further reduces the temperature of the air in the flow channel on the shaded side, keeping the air temperature on the shaded side at a low level. At the same time, the water storage strip is set on the shaded side, which reduces the impact of direct sunlight on the evaporation of water in the water storage strip, thus reducing the possibility of direct evaporation of water in the water storage strip.

[0018] Optionally, the baffle is elastic, and a guide strip is fixedly connected to the surface of the baffle away from the other baffle. The guide strip has a guide slope, and the distance between the guide slope and the baffle gradually decreases along the direction in which the baffle is inserted into the receiving hole. When the baffle retracts into the receiving hole, the two baffles abut against each other.

[0019] By adopting the above technical solution, when the staff opens the box door, the baffle moves away from the other box door. As the distance between the guide slope and the baffle gradually decreases along the direction of the baffle insertion hole, the guide slope drives the baffle to deform, allowing the baffle to deform smoothly towards the other baffle in the same side box door. This enables the two baffles to abut against each other, allowing the baffles to block the air in the flow channel and reduce the possibility of air flowing out directly in the flow channel when the staff opens the box door.

[0020] Optionally, a movable spring is provided on the wall of the receiving hole, and the movable spring drives the baffle to retract into the receiving hole; when the box door is opened, the movable spring drives the baffle to retract into the receiving hole.

[0021] By adopting the above technical solution, when the staff opens the box door, the moving spring drives the baffle to move, allowing the baffle to retract into the receiving hole, so that the two baffles on the same side of the box door can smoothly abut against each other. This eliminates the need for the staff to manually move the baffles, reducing the possibility that hot air from the outside air may directly enter the flow channel due to the staff forgetting to move the baffles.

[0022] In summary, this application includes at least one of the following beneficial technical effects: The distance between the flow channel and the ground gradually increases from the sunny side to the shady side, making the height of the flow channel on the shady side higher than that on the sunny side. As hot air rises, the hot air on the sunny side will automatically flow into the cold air on the shady side, allowing the cold air on the shady side to mix with the air on the sunny side. This reduces the temperature difference between the sunny and shady sides of the enclosure, preventing an excessive thermal gradient and reducing deformation of the enclosure, thus making it more stable.

[0023] When the staff opens the cabinet door, the two baffles slide towards the receiving hole, ensuring the door doesn't obstruct opening. When the staff closes the door, the two baffles move towards the other door, sealing the gap between them. The gap between the baffles allows air to pass through the flow channel, preventing outside air from directly entering and thus preventing air from mixing with outside air in the shaded area. This keeps the air temperature in the shaded area lower and prevents dust and hot air from directly entering the flow channel through the gap between the doors. Simultaneously, the space between the baffles allows air to flow through the channel, enabling rapid mixing between the baffles at different heights and preventing excessive vertical thermal gradients in the cabinet caused by temperature differences between different levels of air. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a cross-sectional view highlighting the placement slot in the embodiments of this application; Figure 3 This is a schematic diagram of the structure highlighting the receiving strip in the embodiments of this application; Figure 4 This is a schematic diagram showing the heat dissipation holes in an embodiment of this application; Figure 5 yes Figure 3 An enlarged schematic diagram of part A in the middle; Figure 6 yes Figure 2 Enlarged schematic diagram of part B; Figure 7 yes Figure 2 An enlarged schematic diagram of section C.

[0025] Reference numerals: 1. Box body; 11. Placement slot; 12. Receiving slot; 13. Receiving strip; 131. Flow channel; 132. Fixing slot; 133. PCM board; 14. Heat dissipation hole; 141. First bimetallic strip; 142. Second bimetallic strip; 15. Perforation; 151. Hydrophilic strip; 152. Vertical hole; 153. Water storage strip; 2. Box door; 21. Receiving hole; 22. Moving slot; 221. Moving spring; 222. Baffle; 223. Guide strip; 224. Guide slope; 225. Fixing magnet. Detailed Implementation

[0026] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0027] This embodiment discloses an integrated photovoltaic and energy storage prefabricated substation. (Refer to...) Figure 1 and Figure 2 A photovoltaic-storage integrated prefabricated substation includes a housing 1 and multiple doors 2. The housing 1 has a placement slot 11 for placing electrical equipment. The multiple doors 2 are rotatably connected to the housing 1 and block the opening of the placement slot 11.

[0028] Reference Figure 2 and Figure 3 The housing 1 has a receiving groove 12 extending circumferentially along the housing 1, and the door 2 has a receiving hole 21 communicating with the receiving groove 12. When the door 2 is closed, the receiving hole 21 communicates with the receiving groove 12. Multiple receiving strips 13 are provided within the receiving groove 12, and the receiving strips 13 extend into the receiving hole 21. The multiple receiving strips 13 are spirally wound within the receiving groove 12 in a vertically upward direction. A flow channel 131 is formed between the multiple receiving strips 13, and the flow channel 131 is inclined.

[0029] Reference Figure 2 and Figure 3 The flow channel 131 on the sunny side of the box 1 is lower than the same flow channel 131 on the shady side of the box 1. Since the air temperature in the flow channel 131 on the sunny side is higher than the air temperature in the flow channel 131 on the shady side, the air on the sunny side can flow smoothly to the shady side, allowing the hot air on the sunny side to exchange with the air on the shady side, thereby reducing the temperature difference between the sunny and shady sides.

[0030] Reference Figure 2 and Figure 4The housing 1 on the shaded side has a heat dissipation hole 14 that connects to the receiving groove 12. A first bimetallic strip 141 and a second bimetallic strip 142 are fixedly connected to the wall of the heat dissipation hole 14. The composite material in the first bimetallic strip 141 is grade 5J14110, which is made of manganese-copper-nickel alloy and Invar alloy; the composite material in the second bimetallic strip 142 is grade 5J20110, which is made of iron-nickel-chromium alloy and Invar alloy. When the first bimetallic strip 141 senses a temperature of 20 degrees Celsius, it deforms, causing it to bend away from the placement groove 11. When the second bimetallic strip 142 senses a temperature of 40 degrees Celsius, it deforms, causing it to bend away from the placement groove 11.

[0031] Reference Figure 2 and Figure 4 When the first bimetallic strip 141 senses 20 degrees Celsius, the first bimetallic strip 141 deforms in the direction away from the placement slot 11. At this time, the second bimetallic strip 142 does not deform. The first bimetallic strip 141 only causes the second bimetallic strip 142 to bend slightly through deformation, so that the heat dissipation hole 14 can achieve a small range of air flow.

[0032] Reference Figure 2 , Figure 3 and Figure 4 When both the first bimetallic strip 141 and the second bimetallic strip 142 sense 40 degrees Celsius, both the first bimetallic strip 141 and the second bimetallic strip 142 deform in the direction away from the placement groove 11. At this time, neither the first bimetallic strip 141 nor the second bimetallic strip 142 blocks the heat dissipation hole 14, so that the air in the flow channel 131 can directly exchange with the outside air on the shaded side, and the heat in the flow channel 131 is reduced by the flow of air.

[0033] Reference Figure 5 A fixing groove 132 is provided on the surface of the receiving strip 13 away from the ground. A PCM plate 133 is provided in the fixing groove 132. The PCM plate 133 can absorb and store a certain amount of heat and release heat when the temperature is low. When the temperature drops suddenly at night, the PCM plate 133 can release the heat accumulated during the day, so that the temperature inside the box 1 is not prone to sudden drop too much, which would cause condensation to appear on the inner wall of the placement groove 11.

[0034] Reference Figure 5 and Figure 6Two movable grooves 22 are provided on the side of the door 2, and the movable grooves 22 are connected to the receiving hole 21. Both movable grooves 22 extend vertically. A movable spring 221 is fixedly connected to the bottom wall of the movable groove 22, and an elastic baffle 222 is fixedly connected to the surface of the movable spring 221. The baffle 222 extends vertically, and the movable spring 221 drives the baffle 222 to move towards the bottom wall of the movable groove 22.

[0035] Reference Figure 6 A guide strip 223 is fixedly connected to the surface of the baffle 222 away from the other baffle 222. A guide slope 224 is formed on the surface of the guide strip 223 away from the other baffle 222. The distance between the guide slope 224 and the baffle 222 on the same side gradually decreases along the direction of the baffle 222 away from the other baffle 222. The guide slope 224 can abut against the groove wall of the moving groove 22.

[0036] Reference Figure 5 and Figure 6 When the moving spring 221 drives the baffle 222 to move, the baffle 222 moves toward the bottom wall of the moving groove 22, so that the guide slope 224 abuts against the groove wall of the moving groove 22. The baffle 222 moves toward another baffle 222, so that the two baffles 222 can successfully seal the opening of the receiving hole 21.

[0037] Reference Figure 6 A fixed magnet 225 is fixedly connected to the surface of the baffle 222 facing the other door 2. The fixed magnets 225 on the same side of the two doors 2 can attract each other. When the doors 2 are closed, the fixed magnets 225 attract each other, so that the two baffles 222 can abut against each other, thereby allowing the baffles 222 to automatically seal the gap between the two doors 2.

[0038] Reference Figure 7 The inner wall of the placement tank 11 has multiple through holes 15 for connecting the receiving strips 13. A hydrophilic strip 151 is fixedly connected in the through holes 15. The multiple hydrophilic strips 151 are arranged in an array along the vertical direction. The hydrophilic strips 151 can absorb water droplets flowing down the inner wall of the placement tank 11.

[0039] Reference Figure 7 A vertical hole 152 is formed in the receiving groove 12 on the shady side, and the vertical hole 152 connects multiple perforations 15 and flow channels 131 of different layers. A water storage strip 153 is fixedly connected in the vertical hole 152, and the water storage strip 153 extends in the vertical direction. The water storage strip 153 abuts against multiple hydrophilic strips 151, and the water storage strip 153 can absorb the moisture in the multiple hydrophilic strips 151. The air in the flow channel 131 can carry away heat by flowing through the water storage strip 153.

[0040] The implementation principle of the photovoltaic-storage integrated prefabricated substation in this application embodiment is as follows: when the temperature of the sunny side of the box 1 is higher than the temperature of the shady side of the box 1, the air in the flow channel 131 in the sunny side of the box 1 can be heated and expanded and flow along the inclined flow channel 131 to the shady side. At this time, the air on the sunny side and the air on the shady side can be mixed relatively, avoiding an excessive temperature difference between the sunny side and the shady side of the box 1.

[0041] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "a" or "an," and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," and similar terms mean that the elements or objects preceding "comprising" encompass the elements or objects listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.

Claims

1. A photovoltaic-storage integrated prefabricated substation, comprising a prefabricated enclosure (1) and multiple enclosure doors (2), wherein the enclosure doors (2) are rotatably connected to the prefabricated enclosure (1), and the prefabricated enclosure (1) is provided with a placement slot (11), characterized in that: The box (1) is provided with a receiving groove (12), and a plurality of receiving strips (13) are provided in the receiving groove (12). A flow channel (131) is formed between the plurality of receiving strips (13). The flow channel (131) is inclined and the distance between the flow channel (131) and the ground gradually increases from the sunny side to the shady side.

2. The photovoltaic-storage integrated prefabricated substation according to claim 1, characterized in that: The housing (1) is provided with a heat dissipation hole (14) that connects to the receiving groove (12). The heat dissipation hole (14) is provided with a first bimetallic strip (141) and a second bimetallic strip (142). The first bimetallic strip (141) is located on the side of the second bimetallic strip (142) that is close to the placement groove (11). The first bimetallic strip (141) and the second bimetallic strip (142) block the opening of the heat dissipation hole (14). When the first bimetallic strip (141) and the second bimetallic strip (142) both feel a certain temperature, the first bimetallic strip (141) and the second bimetallic strip (142) both deform in the direction away from the placement groove (11), and the heat dissipation hole (14) opens.

3. The photovoltaic-storage integrated prefabricated substation according to claim 1, characterized in that: The box door (2) is provided with a receiving hole (21) that connects to the receiving groove (12). The receiving strip (13) is disposed in the receiving hole (21). Two baffles (222) are slidably connected to the box door (2). Air in the flow channel (131) can pass through between the two baffles (222). When the box door (2) is closed, the baffles (222) are used to block the gap between the two box doors (2).

4. The photovoltaic-storage integrated prefabricated substation according to claim 3, characterized in that: The baffle (222) is provided with a fixed magnet (225), which is used to attract the fixed magnets (225) of adjacent boxes (2); when the box (2) is closed, the fixed magnet (225) drives the baffles (222) of the two adjacent boxes (2) to abut against each other.

5. The photovoltaic-storage integrated prefabricated substation according to claim 3, characterized in that: Multiple hydrophilic strips (151) are fixedly connected to the inner wall of the placement groove (11), and the hydrophilic strips (151) are distributed in the vertical direction.

6. The photovoltaic-storage integrated prefabricated substation according to claim 5, characterized in that: The box (1) is provided with a water storage strip (153), which abuts against multiple hydrophilic strips (151), and the water storage strip (153) is located in the receiving groove (12) on the shady side.

7. A photovoltaic-storage integrated prefabricated substation according to claim 3, characterized in that: The baffle (222) is elastic, and a guide strip (223) is fixedly connected to the surface of the baffle (222) away from the other baffle (222). The guide strip (223) has a guide slope (224). The distance between the guide slope (224) and the baffle (222) gradually decreases along the direction in which the baffle (222) is inserted into the receiving hole (21). When the baffle (222) retracts into the receiving hole (21), the two baffles (222) abut against each other.

8. The photovoltaic-storage integrated prefabricated substation according to claim 7, characterized in that: The receiving hole (21) is provided with a movable spring (221) on the hole wall. The movable spring (221) drives the baffle (222) to retract into the receiving hole (21). When the box door (2) is opened, the movable spring (221) drives the baffle (222) to retract into the receiving hole (21).

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