A cold source system based on BIPV technology power supply

Abstract

The application relates to a cold source system based on BIPV technology power supply, which comprises a cold source external frame, a BIPV photovoltaic assembly, a hybrid inverter, an energy storage battery and a cold source electric control box; the BIPV photovoltaic assembly is fixedly connected with the cold source external frame; the output end of the BIPV photovoltaic assembly is electrically connected with the direct-current input end of the hybrid inverter; the energy storage end of the hybrid inverter is electrically connected with the energy storage battery; the alternating-current input end of the hybrid inverter is electrically connected with commercial power; the load output end of the hybrid inverter is electrically connected with the input end of the cold source electric control box; the hybrid inverter is provided with a grid-connected and off-grid dual-mode control module; the application has the effects of improving the energy utilization rate of the external cold source system for supplying data center work, reducing operation cost, realizing green power supply and promoting energy saving and emission reduction.

Description

Technical Field

[0001] This application relates to the field of BIPV technology, and in particular to a cold source system powered by BIPV technology. Background Technology

[0002] BIPV, or Building Integrated Photovoltaics, is a technology that integrates solar power generation devices into the building envelope. Its specialized photovoltaic modules can replace traditional building materials, becoming an integral part of the building and combining power generation, building material functionality, and aesthetic appeal. This technology converts solar energy into direct current (DC) through the photovoltaic effect of the photovoltaic modules. After being converted into alternating current (AC) by an inverter, it can meet the building's own electricity needs, and excess electricity can be fed into the power grid. Common applications include photovoltaic roofs, photovoltaic curtain walls, and photovoltaic awnings, enabling buildings to transform from energy consumers into energy producers and effectively reducing dependence on the power grid.

[0003] Currently, the external cooling systems of data centers in my country are mainly powered by dual-path mains power. Automatic switching switches can ensure power supply stability and meet the continuous operation requirements of the cooling system. In addition, some external cooling systems are equipped with diesel generator sets as critical backup power sources, which can start quickly when the mains power is interrupted to power critical loads such as the cooling system. Some cooling systems also adopt an N+1 redundancy method with multiple units connected in parallel to improve reliability. In addition, UPS uninterruptible power supplies are required to avoid interruption of the cooling system's operation during power switching.

[0004] In recent years, with the rapid development of data center cooling technology, diesel generators and UPS have played a crucial role in ensuring the reliability of power supply for external cooling systems in data centers. However, these systems suffer from high power consumption and environmental problems. With the increasing emphasis on renewable energy and environmental protection in China, traditional power generation methods are no longer suitable for the current situation. The pain points of traditional external cooling systems for data centers include: complete reliance on mains power and diesel generators, resulting in high carbon emissions; a chain structure of AC dual power supply → chiller unit → precision air conditioner with an energy conversion efficiency of only 78-82%; high operating costs due to peak-valley electricity price differences (electricity costs account for more than 50% of OPEX in some areas); and high resource waste, indicating room for improvement. Utility Model Content

[0005] The purpose of this utility model is to improve the energy utilization rate of the external cooling system used to power the data center. This application provides a cooling system powered by BIPV technology.

[0006] To achieve the above objectives, the cold source system powered by BIPV technology provided in this application adopts the following technical solution:

[0007] A cooling source system powered by BIPV technology includes a cooling source external frame, BIPV photovoltaic modules, a hybrid inverter, an energy storage battery, and a cooling source electrical control box. The BIPV photovoltaic modules are fixedly connected to the cooling source external frame. The output terminal of the BIPV photovoltaic modules is electrically connected to the DC input terminal of the hybrid inverter. The energy storage terminal of the hybrid inverter is electrically connected to the energy storage battery. The AC input terminal of the hybrid inverter is electrically connected to the mains power. The load output terminal of the hybrid inverter is electrically connected to the input terminal of the cooling source electrical control box. The hybrid inverter is equipped with a grid-connected and off-grid dual-mode control module.

[0008] Preferably, the BIPV photovoltaic module includes several photovoltaic panels, and the external frame of the cold source is provided with several mounting positions in a crisscross pattern, the same number as the number of photovoltaic panels, and the photovoltaic panels are respectively installed in the mounting positions.

[0009] Preferably, the external frame of the cold source is divided into a first installation chamber and a second installation chamber. The hybrid inverter, the energy storage battery, and the cold source control box are sequentially arranged in the first installation chamber. The volume of the first installation chamber is smaller than the volume of the second installation chamber. The external frame of the cold source near the first installation chamber is provided with a plurality of fastening plates, and the plurality of fastening plates are fixedly connected to the external frame of the cold source.

[0010] Preferably, the bottom of the external frame of the cold source is provided with a crossbeam, and the crossbeam is provided with fixing holes.

[0011] Preferably, the external cold source system is located in the second installation chamber, and the coil of the external cold source system extends from the second installation chamber to the first installation chamber. A flow guiding installation part is provided on the top of the external frame of the cold source near the first installation chamber. The flow guiding installation part is inclined from the end near the second installation chamber to the end away from the second installation chamber, and a photovoltaic panel is provided on the flow guiding installation part.

[0012] Preferably, the hybrid inverter is equipped with an energy dispatch module, which is electrically connected to the BIPV photovoltaic module and the mains power.

[0013] Preferably, the cold source electrical control box has a built-in bidirectional switching switch and an overload protector. The bidirectional switching switch is electrically connected to the load output terminal of the hybrid inverter, and the overload protector is electrically connected to the bidirectional switching switch.

[0014] Compared with the prior art, this utility model provides a cold source system based on BIPV technology, which has the following beneficial effects:

[0015] 1. By integrating BIPV photovoltaic modules with the external frame of the cold source, there is no need to build an additional independent photovoltaic support building. At the same time, the unused space outside the cold source can be directly used to realize the photovoltaic power generation function, achieving the space reuse of "cold source function and photovoltaic function";

[0016] 2. Relying on the grid-connected and off-grid dual-mode control module and the supplementary design of energy storage batteries, the grid-connected mode enables photovoltaic and grid power to be supplied in coordination when the grid power is normal. In the event of a sudden grid power outage, it seamlessly switches to off-grid mode, and the cold source control box maintains uninterrupted power supply during the switching process. If the photovoltaic power generation voltage is insufficient, the energy storage battery can also supplement the power supply through the hybrid inverter. It ensures the continuity of power supply from the dual dimensions of "mode switching" and "energy storage backup", which precisely matches the high reliability requirements of data centers for supporting cold source equipment.

[0017] 3. Through the energy dispatch module of the hybrid inverter, the power output of the BIPV photovoltaic modules is prioritized to supply the cold source control box, the remaining power is used to charge the energy storage battery, and the surplus power is fed into the grid, minimizing the dependence on grid power. At the same time, photovoltaic power generation, as a renewable energy source to replace fossil fuel power generation, can also significantly reduce carbon emissions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a cold source system powered by BIPV technology according to an embodiment of this application.

[0019] Figure 2 yes Figure 1 A top view of a cold source system powered by BIPV technology.

[0020] Figure 3 This application describes a system frame for a BIPV photovoltaic module, a hybrid inverter, an energy storage battery, and a cold source control box in a BIPV-powered cold source system.

[0021] Explanation of reference numerals in the attached drawings: 1. External frame of the cold source; 2. BIPV photovoltaic module; 21. Photovoltaic panel; 3. Hybrid inverter; 4. Energy storage battery; 5. Cold source electrical control box; 6. Mounting position; 7. First mounting chamber; 8. Second mounting chamber; 9. Fastening plate; 10. Crossbeam; 101. Fixing hole; 11. Flow guide mounting part; 12. Energy dispatching module; 13. Two-way switching switch; 14. Overload protector. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0023] This application discloses a cooling source system powered by BIPV technology. (Refer to...) Figure 1 , Figure 2 as well as Figure 3A cold source system powered by BIPV technology includes a cold source external frame 1, BIPV photovoltaic modules 2, a hybrid inverter 3, an energy storage battery 4, and a cold source electrical control box 5. The BIPV photovoltaic modules 2 are fixedly connected to the cold source external frame 1. The output terminal of the BIPV photovoltaic modules 2 is electrically connected to the DC input terminal of the hybrid inverter 3. The energy storage terminal of the hybrid inverter 3 is electrically connected to the energy storage battery 4. The AC input terminal of the hybrid inverter 3 is electrically connected to the mains power. The load output terminal of the hybrid inverter 3 is electrically connected to the input terminal of the cold source electrical control box 5. The hybrid inverter 3 is equipped with a grid-connected and off-grid dual-mode control module.

[0024] Specifically, the BIPV photovoltaic module 2 includes several photovoltaic panels 21. The external frame 1 of the cold source is arranged in a crisscross pattern with several mounting positions 6, the same number as the photovoltaic panels 21. The photovoltaic panels 21 are installed in the mounting positions 6 respectively.

[0025] The external frame 1 of the cold source is formed by splicing metal materials together to improve the overall rigidity of the external frame 1. Several photovoltaic panels 21 are fixed in the mounting position 6 by bolts. The use of several photovoltaic panels 21 helps to increase the safety performance of the external frame 1 of the cold source. When a photovoltaic panel 21 malfunctions, it can be easily disassembled and replaced.

[0026] Reference Figure 1 and Figure 3 The external frame 1 of the cold source is divided to form a first installation chamber 7 and a second installation chamber 8. The hybrid inverter 3, the energy storage battery 4 and the cold source electrical control box 5 are sequentially arranged in the first installation chamber 7. The volume of the first installation chamber 7 is smaller than the volume of the second installation chamber 8. Several fastening plates 9 are provided on the external frame 1 of the cold source near the first installation chamber 7. The several fastening plates 9 are fixedly connected to the external frame 1 of the cold source.

[0027] Specifically, the hybrid inverter 3, energy storage battery 4, and cold source control box 5 are installed in an orderly manner in the first installation chamber 7 to reduce the space occupied by the hybrid inverter 3, energy storage battery 4, and cold source control box 5 in the external frame 1 of the cold source. Since the volume of the second installation chamber 8 is larger than that of the first installation chamber 7, the external cold source system is installed in the second installation chamber 8, which is conducive to increasing the heat dissipation area of ​​the cold source system and improving the heat dissipation efficiency of the cold source system.

[0028] The fastening plate 9 can be fixed to the cold source external frame 1 near the first installation chamber 7 by bolts. The fastening plate 9 can be formed by stamping and bending metal sheet to protect the hybrid inverter 3, energy storage battery 4 and cold source electrical control box 5 installed in the first installation chamber 7, and to reduce the probability of damage to the hybrid inverter 3, energy storage battery 4 and cold source electrical control box 5 when the cold source external frame 1 is impacted.

[0029] Reference Figure 1 and Figure 3 The cold source external frame 1 has a crossbeam 10 at its bottom, and the crossbeam 10 has fixing holes 101. The crossbeam 10 is made of I-beam steel, which gives it the characteristics of impact resistance and high load-bearing capacity. The crossbeam 10 supports the cold source external frame 1. At the same time, the cooperation between the fixing holes 101 and the crossbeam 10 makes it easy to fix the cold source external frame 1 at a designated location, improves the stability of the cold source external frame 1 when it is fixed, and facilitates the transportation of the external cold source external frame 1.

[0030] Reference Figure 1 and Figure 3 The coil of the external cold source system extends along the second installation chamber 8 into the first installation chamber 7. A flow guiding installation part 11 is provided on the top of the cold source external frame 1 near the first installation chamber 7. The flow guiding installation part 11 is inclined from one end near the second installation chamber 8 to the end away from the second installation chamber 8. A photovoltaic panel 21 is provided on the flow guiding installation part 11.

[0031] Specifically, when the coil of the external cold source system is installed on the external frame 1 of the cold source, it is simultaneously connected to the first installation chamber 7 and the second installation chamber 8. This allows the coil of the external cold source system to simultaneously dissipate heat from the first installation chamber 7 and the second installation chamber 8 during operation, thereby reducing the temperature inside the first installation chamber 7. This reduces the probability of the high temperature inside the first installation chamber 7 affecting the normal operation of the hybrid inverter 3, the energy storage battery 4, and the cold source electrical control box 5, without the need to install other heat dissipation components inside the first installation chamber 7, resulting in high heat dissipation efficiency.

[0032] Furthermore, since the flow guiding installation part 11 is in an inclined state along the outer frame 1 of the cold source, the heat in the first installation chamber 7 is quickly guided to the coil of the external cold source system through the flow guiding effect of the flow guiding installation part 11, thereby improving the heat dissipation efficiency of the coil of the external cold source system to the first installation chamber 7.

[0033] Reference Figure 1 and Figure 3 The hybrid inverter 3 is equipped with an energy dispatch module 12, which is electrically connected to the BIPV photovoltaic module 2 and the mains power. The cold source control box 5 has a built-in bidirectional switching switch 13 and an overload protector 14. The bidirectional switching switch 13 is electrically connected to the load output terminal of the hybrid inverter 3, and the overload protector 14 is electrically connected to the bidirectional switching switch 13. It is used to cut off the circuit when the bidirectional switching switch 13 or the energy dispatch module 12 malfunctions.

[0034] The external frame 1 of the cold source can be made of aluminum alloy, which gives it a certain rigidity and load-bearing capacity.

[0035] Among them, the BIPV photovoltaic module 2 can be a monocrystalline silicon BIPV module with a single module power of 250W and a size of 1650mm×992mm. The module is fixedly connected to the external frame 1 of the cold source by stainless steel bolts.

[0036] Among them, the hybrid inverter model 3 can be Growatt 15KTL3-X, which integrates an MPPT controller, has a DC input voltage range of 200V DC-1000V DC, an AC output voltage of 380V AC, and a DC-AC conversion efficiency of ≥96.5%.

[0037] Among them, the cold source electrical control box 5 has a built-in Schneider LC1D20000M7C bidirectional switching switch 13, which is linked to the load output terminal of the hybrid inverter 3.

[0038] When sunlight shines on the photovoltaic panel 21, photovoltaic power generation occurs. The generated electricity is then stabilized by the hybrid inverter 3 and controlled by the built-in management system. The grid-connected and off-grid dual-mode control module starts working, which has two modes: one is to charge the energy storage battery 4, and the other is to drive the external cooling system. The external cooling system is driven first to reduce the power consumption of the grid, and then the energy storage is used. If there is a sudden power outage in the grid, the photovoltaic panel 21 and the energy storage battery 4 are used together to supply power to maintain the operation of the external cooling system for a short time. The external cooling system realizes the hybrid power supply of photovoltaic and grid power and operates in both off-grid and grid modes. It can achieve switching without stopping, and the switching time is within 30ms.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cooling source system powered by BIPV technology, characterized in that: The system includes a cold source external frame (1), a BIPV photovoltaic module (2), a hybrid inverter (3), an energy storage battery (4), and a cold source electrical control box (5). The BIPV photovoltaic module (2) is fixedly connected to the cold source external frame (1). The output end of the BIPV photovoltaic module (2) is electrically connected to the DC input end of the hybrid inverter (3). The energy storage end of the hybrid inverter (3) is electrically connected to the energy storage battery (4). The AC input end of the hybrid inverter (3) is electrically connected to the mains power. The load output end of the hybrid inverter (3) is electrically connected to the input end of the cold source electrical control box (5). The hybrid inverter (3) is equipped with a grid-connected and off-grid dual-mode control module.

2. A cold source system powered by BIPV technology according to claim 1, characterized in that: The BIPV photovoltaic module (2) includes several photovoltaic panels (21). The external frame (1) of the cold source is arranged in a crisscross pattern with several mounting positions (6) that are the same number as the photovoltaic panels (21). The photovoltaic panels (21) are respectively installed in the mounting positions (6).

3. A cold source system powered by BIPV technology according to claim 2, characterized in that: The external frame (1) of the cold source is divided into a first installation chamber (7) and a second installation chamber (8). The hybrid inverter (3), the energy storage battery (4) and the cold source electrical control box (5) are sequentially arranged in the first installation chamber (7). The volume of the first installation chamber (7) is smaller than the volume of the second installation chamber (8). The external frame (1) of the cold source near the first installation chamber (7) is provided with several fastening plates (9), and the several fastening plates (9) are fixedly connected to the external frame (1) of the cold source.

4. A cold source system powered by BIPV technology according to claim 3, characterized in that: The bottom of the external frame (1) of the cold source is provided with a crossbeam (10), and the crossbeam (10) is provided with fixing holes (101).

5. A cold source system powered by BIPV technology according to claim 4, characterized in that: An external cold source system is installed in the second installation chamber (8). The coil of the external cold source system extends along the second installation chamber (8) into the first installation chamber (7). A flow guiding installation part (11) is provided on the top of the external frame (1) of the cold source near the first installation chamber (7). The flow guiding installation part (11) is inclined from the end near the second installation chamber (8) to the end away from the second installation chamber (8). A photovoltaic panel (21) is provided on the flow guiding installation part (11).

6. A cold source system powered by BIPV technology according to claim 2, characterized in that: The hybrid inverter (3) is equipped with an energy dispatch module (12), which is electrically connected to the BIPV photovoltaic module (2) and the mains power.

7. A cold source system powered by BIPV technology according to claim 6, characterized in that: The cold source electrical control box (5) has a built-in bidirectional switching switch (13) and an overload protector (14). The bidirectional switching switch (13) is electrically connected to the load output terminal of the hybrid inverter (3), and the overload protector (14) is electrically connected to the bidirectional switching switch (13).

Images