Photovoltaic inversion and energy storage integrated system

Abstract

The invention relates to the technical field of inverters, and particularly discloses a photovoltaic inversion and energy storage integrated system comprising a sealing plate which is rotatably installed on the inner wall of an integrated box. The driving mechanism is used for controlling the sealing plate to turn over; a plurality of air chambers are formed in the side wall of the integrated box, and a plurality of air outlet holes are formed between the integrated box and the air chambers; and the blowing mechanism is mounted in the side wall of the integrated box. When fire occurs in the integrated box, the driving mechanism drives the sealing plate to turn upwards to seal the heat dissipation opening, meanwhile, the sealing plate drives the air blowing mechanism to blow gaseous carbon dioxide in the air chamber into the integrated box, and fire extinguishing treatment is conducted through the closed space and the carbon dioxide. Therefore, electrical elements on the inversion equipment and the energy storage equipment are effectively prevented from encountering low temperature after encountering high temperature, the temperature is slowly reduced from the beginning high temperature, the internal temperature does not change quickly, and the electrical elements are effectively prevented from being damaged due to quick change of the temperature.

Description

Technical Field

[0001] The present invention belongs to the technical field of inverters, and in particular relates to a photovoltaic inverter and energy storage integrated system. Background Art

[0002] Photovoltaic inverters, also known as power regulators, are inverters that can convert the variable DC voltage generated by photovoltaic solar panels into AC power at the mains frequency. The integration of photovoltaic inverters and energy storage is to add an energy storage device to the photovoltaic inverter, and its working principle is based on the technology of power conversion and storage. The photovoltaic inverter first converts DC power into AC power, part of which is used by external devices, and the other part is stored in the energy storage device. When there is insufficient sunlight or the power demand is at a peak, the energy storage device will release the stored energy for the equipment to use.

[0003] During the use of inverters and energy storage devices, especially when operating in an external high-temperature environment, the inverters and energy storage devices will generate a lot of heat. Although the existing ones are equipped with heat sinks, the inverters or energy storage devices may still catch fire due to the continuous high temperature, which will cause significant losses to the inverters and energy storage devices. At present, fire extinguishers are generally used for fire extinguishing.

[0004] For example, the document of domestic patent application CN202410758232.7 records a protective device for an integrated photovoltaic inverter. By setting up protective components, a closed space can be automatically formed when a fire occurs in the transformer to prevent the oxygen supply from spreading the fire. At the same time, it can also prevent the flames from falling and causing safety accidents. By setting up fire extinguishing components, the fire can be automatically extinguished when the closed space is formed. There is no need to manually use a fire extinguisher to extinguish the fire, which is more convenient to use. This solves the problem that when the transformer wires or parts are on fire, although the fire can be extinguished by a fire extinguisher, the burning range cannot be immediately closed, which makes the fire easy to spread and cause safety accidents. The effect of preventing the spread of fire and automatically extinguishing the fire is achieved.

[0005] However, there is a technical problem that needs to be solved: when the fire extinguisher sprays out fire extinguishing materials, the temperature of the sprayed fire extinguishing materials is relatively low. Therefore, the electrical components on the inverter and the energy storage device are exposed to high temperature and then low temperature. Such rapid temperature changes make the originally good electrical components on the inverter and the energy storage device easily damaged. For example, the electrical component material expands under high temperature conditions and shrinks rapidly under low temperature conditions. This will cause stress inside the electrical component material, causing the electrical component to crack or deform; components such as wires and cables are easily affected by their physical flexibility under rapid temperature changes, increasing their risk of breakage or failure, etc. In addition, such damage to electrical components also increases the subsequent maintenance costs and difficulty. Summary of the invention

[0006] The present invention aims at the problem that the electrical components in the inverter and the energy storage device in the prior art are easily damaged when they are exposed to high temperature and then low temperature, and proposes the following technical solution:

[0007] A photovoltaic inverter and energy storage integrated system includes an integrated box, an inverter device and an energy storage device, and a box door and a plurality of heat dissipation ports on the integrated box. The system also includes:

[0008] A sealing plate, which is rotatably mounted on the inner wall of the integrated box, and the sealing plate is turned upward to seal the heat dissipation opening at a position corresponding to the sealing plate;

[0009] A driving mechanism, wherein the driving mechanism is used to control the sealing plate to flip;

[0010] Air chambers, a plurality of air chambers are provided in the side wall of the integrated box, gaseous carbon dioxide is stored in the air chambers, and a plurality of air outlets are provided between the integrated box and the air chambers;

[0011] A blowing mechanism is installed in the side wall of the integrated box, the sealing plate is drivingly connected to the blowing mechanism, the blowing mechanism is connected to the air chamber, and the blowing mechanism is used to blow the gaseous carbon dioxide in the air chamber into the integrated box.

[0012] As a preferred embodiment of the above technical solution, a baffle is provided in the air chamber, and the baffle is used to block the air outlet, wherein the baffle is attached to one side of the air chamber and slides relatively.

[0013] As a preferred embodiment of the above technical solution, the diameter of the air outlet gradually increases from the direction of the air chamber toward the inside of the integrated box.

[0014] As a preferred embodiment of the above technical solution, the blowing mechanism includes:

[0015] An air-blowing airbag, wherein an active cavity is provided in the side wall of the integrated box, the air-blowing airbag is installed in the active cavity, and the output end of the air-blowing airbag extends into the air chamber;

[0016] An extrusion rod is passed through the movable cavity, an extrusion plate is fixed at one end of the extrusion rod, and the extrusion plate abuts against the surface of the inflatable airbag; wherein, after the sealing plate contacts the extrusion rod and continues to flip, the extrusion rod slowly slides and extends into the movable cavity.

[0017] As a preferred embodiment of the above technical solution, a wedge-shaped notch is provided on the extrusion rod, and a wedge-shaped socket is fixed to the bottom of the baffle, the wedge-shaped socket passes through the air chamber, and the wedge-shaped socket is used in conjunction with the wedge-shaped notch. After the wedge-shaped socket is inserted into the wedge-shaped notch, the baffle slides downward and allows the air outlet to leak out.

[0018] As a preferred embodiment of the above technical solution, the driving mechanism includes an empty box, a high-temperature resistant expansion airbag is placed in the empty box, a driving component is installed on the empty box, the driving component includes a limit plate, the limit plate passes through the top of the empty box, a push plate is fixed at one end of the limit plate located in the empty box, the push plate is against the high-temperature resistant expansion airbag, and a movable block is hinged at the other end of the limit plate, and the movable block is against the side of the closest sealing plate.

[0019] As a preferred embodiment of the above technical solution, a partition is provided in the integrated box, and the partition separates the inverter device and the energy storage device.

[0020] As a preferred embodiment of the above technical solution, a cooling and fire extinguishing mechanism is installed on the integrated box, and the cooling and fire extinguishing mechanism includes:

[0021] Smoke alarm, a plurality of smoke alarms are installed in the integrated box;

[0022] A cryogenic storage tank, wherein the cryogenic storage tank is installed on the integrated box, wherein liquid carbon dioxide in a cryogenic state is stored in the cryogenic storage tank, and a plurality of feed pipes are connected to the cryogenic storage tank;

[0023] Wherein, the smoke alarm and the solenoid valve on the cryogenic storage tank are both connected to an external processor.

[0024] As a preferred embodiment of the above technical solution, the partition and the bottom of the inner cavity of the integrated box are both provided with a plurality of storage tanks, the discharge pipe extends into the storage tanks, and a plurality of discharge valves are arranged on the discharge pipe, and the discharge valves are arranged to be tilted downward.

[0025] As a preferred embodiment of the above technical solution, a linkage rod is connected between two adjacent sealing plates, both ends of the linkage rod are rotatably connected to the two sealing plates, and the linkage rod always remains parallel to the inner wall of the integrated box.

[0026] The beneficial effects of the present invention are:

[0027] 1. The present invention is provided with a sealing mechanism, a driving mechanism and an air chamber storing gaseous carbon dioxide. When a fire occurs in the integrated box, the driving mechanism drives the sealing plate to flip upward to seal the heat dissipation port, and at the same time, the sealing plate drives the blowing mechanism to blow the gaseous carbon dioxide in the air chamber into the integrated box, and the fire is extinguished by using a closed space and carbon dioxide, which effectively avoids the electrical components on the inverter device and the energy storage device from encountering a high temperature and then a low temperature, but slowly cools down from the initial high temperature, and the internal temperature does not change rapidly, effectively avoiding the electrical components from being damaged by the rapid temperature change; at the same time, compared with the existing fire extinguisher for extinguishing the fire, the electrical components will not be buried by the fire extinguishing materials, reducing the later maintenance cost and difficulty;

[0028] 2. The diameter of the air outlet in the present invention gradually increases from the air chamber direction toward the inside of the integrated box. In this way, when the gaseous carbon dioxide is ejected from the air outlet, the outermost diameter of the air outlet is larger, so that the ejected gaseous carbon dioxide is more diffused and covers a wider area, thereby improving the fire extinguishing effect of the gaseous carbon dioxide;

[0029] 3. In the present invention, before the wedge-shaped socket is inserted into the wedge-shaped notch, the extrusion plate continuously squeezes the blowing airbag. Since the baffle blocks the air outlet, the pressure in the air chamber increases. Thus, at the moment when the air outlet leaks, the speed at which the gaseous carbon dioxide is ejected is accelerated. Combined with the conical shape of the air outlet, the gaseous carbon dioxide ejected at this time is fast and diffuses, further improving the fire extinguishing effect of the gaseous carbon dioxide.

[0030] 4. The present invention is provided with a cryogenic storage tank for storing liquid carbon dioxide, a smoke alarm and a processor. Through the cooperation of the three, when a fire occurs inside the integrated box, the liquid carbon dioxide in the cryogenic storage tank enters the integrated box through the feed pipe. The liquid carbon dioxide will quickly turn into gas after encountering high temperature, and absorb a large amount of surrounding heat, thereby cooling the inside of the integrated box, effectively avoiding damage to electrical components caused by continuous high temperature. At the same time, the generated gaseous carbon dioxide cooperates with the gaseous carbon dioxide discharged from the gas chamber to extinguish the fire source in the integrated box;

[0031] 5. The present invention is provided with a downwardly inclined discharge valve, a partition and a plurality of storage tanks in an integrated box. Liquid carbon dioxide flows out of the discharge valve through a discharge pipe and is located in the storage tank. At the same time, the downward inclination of the discharge valve can effectively prevent the outflowing liquid carbon dioxide from splashing onto the inverter device and the energy storage device, thereby effectively preventing the liquid carbon dioxide from directly contacting the inverter device and the energy storage device, and effectively preventing the electrical components on the inverter device and the energy storage device from being damaged by high temperature and then low temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0034] Figure 3 It is a schematic diagram of the sealing plate and the driving mechanism structure;

[0035] Figure 4 It is a schematic diagram of the blowing mechanism structure;

[0036] Figure 5 It is a schematic diagram of the enlarged structure at A;

[0037] Figure 6 It is a schematic diagram of the internal structure of the air chamber;

[0038] Figure 7 Schematic diagram of the internal structure of the driving mechanism;

[0039] Figure 8 It is a schematic diagram of the structure of the cooling and fire extinguishing mechanism;

[0040] Fig. 9 Schematic diagram of the feeding pipe structure.

[0041] In the figure:

[0042] 1. Integrated box; 11. Box door; 12. Partition; 13. Heat dissipation port; 131. Filter; 14. Air chamber; 141. Air outlet; 142. Baffle; 1421. Wedge-shaped socket; 143. Gas filling pipe; 15. Active cavity; 16. Storage tank; 2. Inverter; 3. Energy storage device; 4. Sealing plate; 5. Driving mechanism; 51. Empty box; 52. High temperature resistant expansion airbag; 53. Driving member; 531. Push plate; 532. Limiting plate; 533. Active block; 6. Blowing mechanism; 61. Extrusion rod; 611. Extrusion plate; 612. Wedge-shaped notch; 62. Blowing airbag; 7. Linkage rod; 8. Cooling and fire extinguishing mechanism; 81. Smoke alarm; 82. Processor; 83. Low temperature storage tank; 831. Feeding pipe; 8311. Feeding valve. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0044] Example

[0045] like Figure 1-Figure 7 As shown; a photovoltaic inverter and energy storage integrated system, including an integrated box 1, an inverter device 2 and an energy storage device 3, and a box door 11 and a plurality of heat dissipation ports 13 on the integrated box 1, the system also includes:

[0046] The sealing plate 4 is rotatably mounted on the inner wall of the integrated box 1, and the sealing plate 4 is turned upward to seal the heat dissipation opening 13 at a position corresponding to the sealing plate 4;

[0047] A driving mechanism 5, the driving mechanism 5 is used to control the sealing plate 4 to flip;

[0048] Air chamber 14: a plurality of air chambers 14 are provided in the side wall of the integrated box 1, gaseous carbon dioxide is stored in the air chambers 14, and a plurality of air outlet holes 141 are provided between the integrated box 1 and the air chambers 14;

[0049] The blowing mechanism 6 is installed in the side wall of the integrated box 1 , the sealing plate 4 is drivingly connected to the blowing mechanism 6 , and the blowing mechanism 6 is connected to the air chamber 14 . The blowing mechanism 6 is used to blow the gaseous carbon dioxide in the air chamber 14 into the integrated box 1 .

[0050] Among them, a plurality of gas filling pipes 143 are arranged on the outside of the integrated box 1 , and the gas filling pipes 143 are connected with the air chamber 14 , and gaseous carbon dioxide is added into the air chamber 14 through the gas filling pipes 143 .

[0051] In addition, a filter 131 is installed at the heat dissipation port 13; on the one hand, the filter 131 can filter the flowing air when the system is in normal use to prevent impurities from entering the integrated box 1 and damaging the electrical components; when the fire in the integrated box 1 is extinguished and the sealing plate 4 is opened, a large amount of toxic gas will be in the integrated box 1. The filter 131 is used to filter the toxic gas to make the exhausted gas as non-toxic as possible, thereby improving the safety of nearby staff.

[0052] In actual application of this embodiment, when the inverter device 2 or the energy storage device 3 inside the integrated box 1 catches fire due to high temperature or other factors, the driving mechanism 5 drives the sealing plate 4 to seal the heat dissipation port 13, and the sealing plate 4 drives the blowing mechanism 6 to blow air into the air chamber 14, thereby blowing the gaseous carbon dioxide in the air chamber 14 into the integrated box 1 through the air outlet 141. Since the integrated box 1 is in a sealed state at this time and there is still carbon dioxide inside, the fire source in the integrated box 1 can be extinguished.

[0053] The advantages of the present invention are: using a confined space and carbon dioxide to extinguish a fire, the confined space can quickly consume the oxygen in the integrated box 1, so that the flame is extinguished due to lack of oxygen, and a large amount of gas will be generated during the ignition process. These gases accumulate in the confined space, which can further reduce the oxygen content and inhibit combustion; gaseous carbon dioxide can reduce the oxygen content around the burning object, thereby preventing the flame from contacting oxygen and achieving the purpose of extinguishing the fire. At the same time, the specific gravity of gaseous carbon dioxide is greater than that of air, and it can quickly cover the surface of the burning object, replacing the oxygen in the air, effectively isolating the exchange of the fire source with the external oxygen, and playing a role in extinguishing the fire; this fire extinguishing method effectively prevents the electrical components on the inverter device 2 and the energy storage device 3 from encountering high temperature and then low temperature, but slowly cools down from the initial high temperature, and the internal temperature does not change rapidly, effectively preventing the electrical components from being damaged by rapid temperature changes.

[0054] Furthermore, a baffle 142 is provided in the air chamber 14 , and the baffle 142 is used to block the air outlet 141 , wherein the baffle 142 is attached to one side of the air chamber 14 and slides relatively.

[0055] In actual application of this embodiment, the baffle 142 is slid downward by the blowing mechanism 6, so that the air outlet 141 leaks out, and the gaseous carbon dioxide in the air chamber 14 enters the integrated box 1 through the air outlet 141, thereby performing fire extinguishing.

[0056] Furthermore, the diameter of the air outlet 141 gradually increases from the direction of the air chamber 14 toward the inside of the integrated box 1 .

[0057] In actual application of this embodiment, when gaseous carbon dioxide is ejected from the gas outlet 141, the gaseous carbon dioxide is more diffused and covers a wider area due to the larger diameter of the outermost side of the gas outlet 141, thereby improving the fire extinguishing effect of the gaseous carbon dioxide.

[0058] Further, the blowing mechanism 6 comprises:

[0059] The blowing airbag 62 is provided with an active cavity 15 in the side wall of the integrated box 1, the blowing airbag 62 is installed in the active cavity 15, and the output end of the blowing airbag 62 extends into the air chamber 14;

[0060] The extrusion rod 61 penetrates the active cavity 15, and an extrusion plate 611 is fixed to one end of the extrusion rod 61, and the extrusion plate 611 abuts against the surface of the blowing airbag 62; wherein, after the sealing plate 4 contacts the extrusion rod 61 and continues to flip, the extrusion rod 61 slowly slides and extends into the active cavity 15.

[0061] The inflatable airbag 62 is made of elastic material, so that the inflatable airbag 62 can rebound to reset the extrusion rod 61 .

[0062] During actual application of this embodiment, the driving mechanism 5 causes the sealing plate 4 to slowly flip upwards, so that the sealing plate 4 slowly contacts the extrusion rod 61, and the extrusion rod 61 slowly slides into the movable cavity 15, thereby driving the extrusion plate 611 to squeeze the blowing airbag 62, and the blowing airbag 62 blows air into the air chamber 14, thereby blowing gaseous carbon dioxide into the integrated box 1 through the air outlet 141 for fire extinguishing; when the sealing plate 4 driving mechanism 5 is restrained, the extrusion rod 61 slowly returns to its original position through the rebound ability of the blowing airbag 62.

[0063] Furthermore, a wedge-shaped notch 612 is provided on the extrusion rod 61, and a wedge-shaped socket 1421 is fixed to the bottom of the baffle 142. The wedge-shaped socket 1421 penetrates the air chamber 14, and the wedge-shaped socket 1421 is used in conjunction with the wedge-shaped notch 612. After the wedge-shaped socket 1421 is inserted into the wedge-shaped notch 612, the baffle 142 slides downward and allows the air outlet 141 to leak out.

[0064] In actual application of this embodiment, when the extrusion rod 61 slowly slides toward the active chamber 15, the wedge-shaped notch 612 slowly approaches the wedge-shaped socket 1421 until the wedge-shaped socket 1421 is inserted into the wedge-shaped notch 612, so that the baffle plate 142 will slide downward to allow the air outlet 141 to leak out, making it convenient for gaseous carbon dioxide to enter the integrated box 1; before the wedge-shaped socket 1421 is inserted into the wedge-shaped notch 612, the extrusion plate 611 continues to squeeze the blowing airbag 62, and because the baffle plate 142 blocks the air outlet 141, the pressure in the air chamber 14 increases, so that The moment the air outlet 141 leaks, the speed of the gaseous carbon dioxide being ejected is accelerated. Combined with the conical shape of the air outlet 141, the gaseous carbon dioxide ejected at this time is fast and diffused, further improving the fire extinguishing effect of the gaseous carbon dioxide. In addition, when the blowing airbag 62 rebounds, the extrusion rod 61 slides into the integrated box 1. At this time, since the contact surface between the wedge-shaped socket 1421 and the wedge-shaped notch 612 is in an inclined state, it is convenient for the wedge-shaped socket 1421 to slowly move away from the wedge-shaped notch 612, allowing the baffle 142 to slide up and block the air outlet 141.

[0065] In addition, when the wedge-shaped socket 1421 is inserted into the wedge-shaped notch 612, the extrusion rod 61 is flush with the inner wall of the integrated box 1. At this time, the sealing plate 4 can completely fit with the inner wall of the integrated box 1, thereby completely sealing the heat dissipation port 13, improving the sealing effect, and thus improving the fire extinguishing effect.

[0066] Furthermore, the driving mechanism 5 includes an empty box 51, in which a high-temperature resistant expansion airbag 52 is placed, and a driving member 53 is installed on the empty box 51. The driving member 53 includes a limiting plate 532, and the limiting plate 532 passes through the top of the empty box 51. The limiting plate 532 is located in the empty box 51, and one end thereof is fixed with a push plate 531, and the push plate 531 is against the high-temperature resistant expansion airbag 52. The other end of the limiting plate 532 is hinged with a movable block 533, and the movable block 533 is against the side of the closest sealing plate 4.

[0067] There is a large gap between the high temperature resistant expansion airbag 52 and the inner wall of the empty box 51 in the initial state, so that the high temperature resistant expansion airbag 52 has enough expansion space.

[0068] In actual application of this embodiment, when the inverter device 2 or the energy storage device 3 catches fire, the internal temperature of the integrated box 1 gradually increases. At this time, the high-temperature resistant expansion airbag 52 will slowly expand, thereby pushing the push plate 531 to move upward, thereby driving the movable block 533 to move vertically upward through the limit plate 532. The movable block 533 will push the sealing plate 4 during the upward displacement process, and the sealing plate 4 will slowly flip upward. At the same time, the movable block 533 will also flip with the sealing plate 4. The movable block 533 is always attached to the side of the sealing plate 4 until the sealing plate 4 is completely attached to the inner wall of the integrated box 1. The high-temperature resistant expansion airbag 52 continues to expand during this process, so that the movable block 533 has enough force to squeeze the sealing plate 4, thereby making the sealing effect of the sealing plate 4 better.

[0069] Furthermore, a partition 12 is provided in the integrated box 1 , and the partition 12 separates the inverter device 2 and the energy storage device 3 .

[0070] In actual application of this embodiment, the partition 12 can ensure that when the inverter device 2 or the energy storage device 3 catches fire, the two do not interfere with each other, thereby effectively reducing the degree of damage to the inverter device 2 or the energy storage device 3.

[0071] like Figure 1 , Figure 8 and Fig. 9 As shown; a cooling and fire extinguishing mechanism 8 is installed on the integrated box 1, and the cooling and fire extinguishing mechanism 8 includes:

[0072] Smoke alarm 81, a plurality of smoke alarms 81 are installed in the integrated box 1;

[0073] A low-temperature storage tank 83, which is installed on the integrated box 1. The low-temperature storage tank 83 stores liquid carbon dioxide in a low-temperature state. The low-temperature storage tank 83 is connected to a plurality of feed pipes 831;

[0074] The smoke alarm 81 and the solenoid valve on the low-temperature storage tank 83 are both connected to the external processor 82 .

[0075] In actual application of this embodiment, when a fire occurs inside the integrated box 1, smoke will be generated. At this time, the smoke alarm 81 will sound an alarm, on the one hand to alert the staff, and on the other hand to transmit a signal to the processor 82. The processor 82 will control the solenoid valve on the low-temperature storage tank 83 to open, and the liquid carbon dioxide in the low-temperature storage tank 83 will enter the integrated box 1 through the discharge pipe 831. The liquid carbon dioxide will quickly turn into gas when encountering high temperature and absorb a large amount of surrounding heat, thereby cooling the inside of the integrated box 1, effectively preventing the electrical components from being damaged by continuous high temperature. At the same time, the gaseous carbon dioxide generated cooperates with the gaseous carbon dioxide discharged from the air chamber 14 to extinguish the fire source in the integrated box 1.

[0076] In addition, in this embodiment, a pressure regulator can be installed on the integrated box 1 to adjust the pressure inside the integrated box 1, effectively avoiding the generation of a large amount of smoke in the integrated box 1, which causes the pressure inside the integrated box 1 to be too high, thereby affecting the normal spraying of gaseous carbon dioxide, and also avoiding damage to electrical components due to excessive pressure; wherein, the pressure regulator is a prior art and will not be elaborated on herein.

[0077] Furthermore, a plurality of storage tanks 16 are provided at the bottom of the inner cavity of the partition 12 and the integrated box 1, and a discharge pipe 831 extends into the storage tank 16. A plurality of discharge valves 8311 are provided on the discharge pipe 831, and the discharge valves 8311 are arranged to be tilted downward.

[0078] In actual application of this embodiment, liquid carbon dioxide flows out from the discharge valve 8311 through the discharge pipe 831 and is located in the storage tank 16, which can effectively prevent the liquid carbon dioxide from directly contacting the inverter device 2 and the energy storage device 3, thereby preventing the electrical components on the inverter device 2 and the energy storage device 3 from being damaged by encountering high temperature and then low temperature; in addition, the downward inclination of the discharge valve 8311 can effectively prevent the outflowing liquid carbon dioxide from splashing onto the inverter device 2 and the energy storage device 3.

[0079] like Figure 3 and Figure 8 As shown, a linkage rod 7 is connected between two adjacent sealing plates 4 , both ends of the linkage rod 7 are rotatably connected to the two sealing plates 4 , and the linkage rod 7 always remains parallel to the inner wall of the integrated box 1 .

[0080] In actual application of this embodiment, the linkage rod 7 can be used to rotate multiple sealing plates 4 upward, thereby sealing the heat dissipation ports 13 at different positions and sealing the integrated box 1. In addition, since the linkage rod 7 always remains parallel to the inner wall of the integrated box 1, a parallelogram is formed between two adjacent sealing plates 4, the linkage rod 7 and the inner wall of the integrated box 1, so that two adjacent sealing plates 4 can be rotated synchronously, and multiple heat dissipation ports 13 can be sealed synchronously, thereby improving the sealing effect.

[0081] Working principle: When the inverter device 2 or the energy storage device 3 in the integrated box 1 catches fire due to high temperature or other factors, the temperature in the integrated box 1 will slowly rise. At this time, the high-temperature resistant expansion airbag 52 will slowly expand, thereby pushing the push plate 531 to move upward, and driving the movable block 533 to move upward through the limit plate 532. The movable block 533 will push the sealing plate 4 during the upward displacement process. The sealing plate 4 will slowly flip upward and fit the inner wall of the integrated box 1, so that the heat dissipation port 13 is sealed. The sealing plate 4 will slowly contact the extrusion rod 61 during the flipping process, and the extrusion rod 61 will slowly slide toward the active cavity 15, so that the extrusion plate 611 squeezes the blowing airbag 62. At the same time, the wedge-shaped notch 612 will slowly approach the wedge-shaped socket 1421 until the wedge-shaped socket 1421 is inserted into the wedge-shaped notch 612, so that the baffle 142 will slide downward to make the air outlet 1 41 leaks out, the blowing airbag 62 will blow the gaseous carbon dioxide in the air chamber 14 into the interior of the integrated box 1 through the air outlet 141, and use the enclosed space and carbon dioxide to extinguish the fire; smoke will be generated during the fire process, and the smoke alarm 81 will alarm, on the one hand to warn the staff, on the other hand to transmit a signal to the processor 82, the processor 82 will control the solenoid valve on the low-temperature storage tank 83 to open, and the liquid carbon dioxide in the low-temperature storage tank 83 will enter the interior of the integrated box 1 through the discharge pipe 831. The liquid carbon dioxide will quickly turn into gas when it encounters high temperature, and absorb a large amount of surrounding heat, thereby cooling the interior of the integrated box 1, effectively preventing the continuous high temperature from damaging the electrical components, and at the same time, the gaseous carbon dioxide generated cooperates with the gaseous carbon dioxide discharged from the air chamber 14 to extinguish the fire source in the integrated box 1.

[0082] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A photovoltaic inverter and energy storage integrated system, comprising an integrated box (1), an inverter device (2) and an energy storage device (3), and a box door (11) and a plurality of heat dissipation ports (13) on the integrated box (1), characterized in that: The system further comprises: A sealing plate (4), wherein the sealing plate (4) is rotatably mounted on the inner wall of the integrated box (1), and the sealing plate (4) is turned upward to seal the heat dissipation opening (13) at a position corresponding to the sealing plate (4); A driving mechanism (5), wherein the driving mechanism (5) is used to control the sealing plate (4) to flip; Air chambers (14), a plurality of air chambers (14) are provided in the side wall of the integrated box (1), gaseous carbon dioxide is stored in the air chambers (14), and a plurality of air outlet holes (141) are provided between the integrated box (1) and the air chambers (14); A blowing mechanism (6) is installed in the side wall of the integrated box (1), the sealing plate (4) is drivingly connected to the blowing mechanism (6), the blowing mechanism (6) is connected to the air chamber (14), and the blowing mechanism (6) is used to blow the gaseous carbon dioxide in the air chamber (14) into the integrated box (1).

2. The photovoltaic inverter and energy storage integrated system according to claim 1, characterized in that: A baffle (142) is provided in the air chamber (14), and the baffle (142) is used to block the air outlet hole (141), wherein the baffle (142) is attached to one side of the air chamber (14) and slides relatively thereto.

3. The photovoltaic inverter and energy storage integrated system according to claim 2, characterized in that: The diameter of the air outlet hole (141) gradually increases from the direction of the air chamber (14) toward the inside of the integrated box (1).

4. The photovoltaic inverter and energy storage integrated system according to claim 2, characterized in that: The blowing mechanism (6) comprises: An air blowing bag (62), wherein an active cavity (15) is provided in the side wall of the integrated box (1), the air blowing bag (62) is installed in the active cavity (15), and the output end of the air blowing bag (62) extends into the air chamber (14); An extrusion rod (61), the movable cavity (15) is penetrated by the extrusion rod (61), one end of the extrusion rod (61) is fixed with an extrusion plate (611), and the extrusion plate (611) abuts against the surface of the blowing airbag (62); wherein, after the sealing plate (4) contacts the extrusion rod (61) and continues to flip, the extrusion rod (61) slowly slides and extends into the movable cavity (15).

5. The photovoltaic inverter and energy storage integrated system according to claim 4, characterized in that: The extrusion rod (61) is provided with a wedge-shaped notch (612), and a wedge-shaped socket (1421) is fixed at the bottom of the baffle (142). The wedge-shaped socket (1421) penetrates the air chamber (14), and the wedge-shaped socket (1421) is used in conjunction with the wedge-shaped notch (612). After the wedge-shaped socket (1421) is inserted into the wedge-shaped notch (612), the baffle (142) slides downward to allow the air outlet (141) to leak out.

6. The photovoltaic inverter and energy storage integrated system according to claim 5, characterized in that: The driving mechanism (5) comprises an empty box (51), a high temperature resistant expansion airbag (52) is placed in the empty box (51), a driving member (53) is installed on the empty box (51), and the driving member (53) comprises a limiting plate (532), the limiting plate (532) passes through the top of the empty box (51), one end of the limiting plate (532) located in the empty box (51) is fixed with a push plate (531), the push plate (531) abuts against the high temperature resistant expansion airbag (52), and the other end of the limiting plate (532) is hinged with a movable block (533), and the movable block (533) abuts against one side of the closest sealing plate (4).

7. The photovoltaic inverter and energy storage integrated system according to claim 6, characterized in that: A partition (12) is provided in the integrated box (1), and the partition (12) separates the inverter device (2) and the energy storage device (3).

8. The photovoltaic inverter and energy storage integrated system according to claim 7, characterized in that: The integrated box (1) is provided with a cooling and fire-extinguishing mechanism (8), and the cooling and fire-extinguishing mechanism (8) comprises: Smoke alarm (81), a plurality of smoke alarms (81) are installed in the integrated box (1); A low-temperature storage tank (83), wherein the low-temperature storage tank (83) is installed on the integrated box (1), wherein liquid carbon dioxide in a low-temperature state is stored in the low-temperature storage tank (83), and a plurality of feed pipes (831) are connected to the low-temperature storage tank (83); Wherein, the smoke alarm (81) and the solenoid valve on the low-temperature storage tank (83) are both connected to an external processor (82).

9. The photovoltaic inverter and energy storage integrated system according to claim 8, characterized in that: The partition plate (12) and the bottom of the inner cavity of the integrated box (1) are both provided with a plurality of storage tanks (16), the discharge pipe (831) extends into the storage tank (16), and the discharge pipe (831) is provided with a plurality of discharge valves (8311), and the discharge valves (8311) are arranged to be tilted downward.

10. The photovoltaic inverter and energy storage integrated system according to claim 1, characterized in that: A linkage rod (7) is connected between two adjacent sealing plates (4), and both ends of the linkage rod (7) are rotatably connected to the two sealing plates (4), and the linkage rod (7) always remains parallel to the inner wall of the integrated box (1).

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