Photovoltaic energy storage cabinet

Abstract

The present application relates to the technical field of energy storage cabinet, and discloses a photovoltaic energy storage cabinet, which comprises a cabinet body; the cabinet body is divided into an I area and an II area by a mounting frame; a plurality of battery cells are arranged on the mounting frame and located in the I area; a trigger type fire extinguishing device is arranged between adjacent battery cells; an energy storage converter and a piercing type fire extinguishing device are arranged in the II area; the trigger type fire extinguishing device and the piercing type fire extinguishing device are filled with inert gas; and a flexible isolation device is arranged in the II area and can move horizontally and stretch and fold. The flexible isolation device is stretched horizontally, the trigger type fire extinguishing device in the I area is triggered synchronously to release inert gas to achieve source fire extinguishing, the I area and the II area are isolated to block the spread of fire, the piercing type fire extinguishing device in the II area is triggered further after the flexible isolation device is stretched to the position, a double protection barrier is formed, the core equipment of the energy storage converter is protected, and rapid response and partition protection of the energy storage cabinet fire are achieved.

Description

Technical Field

[0001] This invention relates to the field of energy storage cabinet technology, and more particularly to a photovoltaic energy storage cabinet. Background Technology

[0002] A photovoltaic energy storage cabinet is a comprehensive energy device that integrates photovoltaic power generation and energy storage functions. Its core structure is equipped with an internal energy storage battery pack to realize the utilization and supply of solar energy. The photovoltaic energy storage cabinet converts the DC power generated by the photovoltaic modules through an inverter. Part of the DC power is directly supplied to the load, while the other part is used to charge and store the internal energy storage battery. When there is insufficient sunlight or peak electricity demand, the energy storage battery releases electrical energy, which is then regulated by the energy management system to output stable power. This effectively solves the problems of intermittency and volatility in photovoltaic power generation, improves the absorption capacity of renewable energy and the reliability of power supply. This photovoltaic energy storage cabinet is widely used in distributed energy systems, industrial and commercial peak shaving and valley filling, microgrid backup power supply and off-grid power supply scenarios. It is a carrier for realizing photovoltaic-energy storage integration and building new power systems.

[0003] Photovoltaic energy storage cabinets typically integrate battery pack units. During actual operation, when the battery packs overheat abnormally due to faults such as internal short circuits, thermal runaway, or management system failure, the relatively enclosed space and limited heat dissipation conditions inside the energy storage cabinet can easily lead to rapid heat accumulation and fire. After the battery packs catch fire, the flames and high-temperature smoke will further spread to the area where the energy storage converter is located, igniting surrounding electrical equipment and causing the fire to expand. However, existing energy storage cabinets generally lack structural designs for effective physical isolation of the battery packs and targeted fire suppression.

[0004] To address the aforementioned issues, this application proposes a photovoltaic energy storage cabinet. Summary of the Invention

[0005] This invention proposes a photovoltaic energy storage cabinet that solves the problems of existing energy storage cabinets in related technologies, such as insufficient heat dissipation due to enclosed space, easy accumulation of heat from battery failure leading to fire, and lack of effective physical isolation and directional fire extinguishing structure for battery packs, which makes it easy for fire to spread to areas such as inverters and cause disaster expansion.

[0006] The present invention proposes a photovoltaic energy storage cabinet, comprising a cabinet body;

[0007] The cabinet is divided into area I and area II by a mounting frame. Multiple battery cells are installed on the mounting frame and located in area I. Trigger-type fire extinguishing devices are installed on the mounting frame between adjacent battery cells.

[0008] The area II is equipped with an energy storage converter and a puncture-type fire extinguishing device located on one side thereon. Both the trigger-type fire extinguishing device and the puncture-type fire extinguishing device are filled with inert gas.

[0009] A flexible isolation element that can move laterally and extend and fold is installed in the II area;

[0010] The flexible isolation component has a first position state and a second position state. In the first position state, it is in a folded form. In the second position state, the flexible isolation component moves laterally to extend and isolate area I and area II. During the extension process, it pushes the trigger-type fire extinguishing component upward to release inert gas in area I, and pushes the puncture-type fire extinguishing component downward to release inert gas in area II.

[0011] As a further optimization of the present invention, the flexible isolation component includes an electric guide rail, a rhombus block, and a fireproof cloth. The electric guide rail is horizontally installed on the inner wall of the back of the cabinet and located in region II. The rhombus block is installed on the drive end of the electric guide rail. The fireproof cloth is connected between the rhombus block and one side inner wall of the cabinet. The upper part of the rhombus block has a symmetrically arranged first inclined surface, and the lower part has a symmetrically arranged second inclined surface.

[0012] As a further optimization of the present invention, the trigger-type fire extinguishing device includes a fire extinguishing tube, and a fire extinguishing tube mounted on a mounting frame is provided between adjacent battery cells. An exhaust hole is opened on the outer periphery of the top of the fire extinguishing tube. A first partition is installed inside the fire extinguishing tube. An elastic sealing part for blocking the exhaust hole is installed on the first partition, and the bottom of the elastic sealing part extends to the bottom of the mounting frame.

[0013] As a further optimization of the present invention, the elastic sealing part includes a movable rod, a vertically arranged movable rod is slidably connected to the first partition plate, a first dome extending from the bottom of the fire extinguishing tube and located below the mounting bracket is fixed at the bottom of the movable rod, a first spring is sleeved on the movable rod, and the two ends of the first spring are respectively connected to the first partition plate and the first dome, the top of the fire extinguishing tube is provided with an opening, and a sealing plug that can enter and exit the opening and seals the exhaust hole is fixed at the top of the movable rod, and inert gas is disposed between the sealing plug and the first partition plate.

[0014] As a further optimization of the present invention, the outer periphery of the fire extinguishing cylinder is connected to a first air inlet for filling gas between the first partition and the sealing plug, and a first valve is installed on the first air inlet.

[0015] As a further optimization of the present invention, the puncture-type fire extinguishing device includes a loading cylinder, a loading frame is installed in the II area, the energy storage converter is installed on the loading frame, the loading cylinder is disposed on one side of the energy storage converter, an exhaust part is detachably connected to the bottom of the loading cylinder, and the exhaust part is detachably installed on the loading frame, a sealing membrane is provided inside the exhaust part, and an elastic puncture part for puncturing the sealing membrane is installed on the loading cylinder.

[0016] As a further optimization of the present invention, the elastic piercing part includes a piercing rod, a second partition is fixed inside the loading cylinder, a vertically arranged piercing rod is slidably connected to the second partition, a second dome extending out of the top of the loading cylinder is fixed at the top of the piercing rod, a second spring is sleeved on the piercing rod, and the two ends of the second spring are respectively connected to the second partition and the second dome, and the bottom end of the piercing rod forms a pointed structure facing the sealing film.

[0017] As a further optimization of the present invention, the exhaust section includes a movable sleeve and an exhaust pipe. The movable sleeve is threadedly connected to the bottom of the loading cylinder, and the exhaust pipe is fixed to the bottom of the movable sleeve. The loading frame has a threaded groove, and the exhaust pipe is threadedly engaged with the threaded groove. The sealing membrane is connected to the top of the exhaust pipe, and the inert gas is disposed between the second partition and the sealing membrane. The outer periphery of the exhaust pipe has a plurality of circumferentially arranged air outlets.

[0018] As a further optimization of the present invention, the outer periphery of the loading cylinder is connected to a second air inlet for filling gas between the second partition and the sealing membrane, and a second valve is installed on the second air inlet.

[0019] As a further optimization of the present invention, a temperature sensor is installed on the top of the I area, and the temperature sensor is used to monitor the temperature of the I area. A door panel is installed on the front side of the cabinet, and a controller is installed on the door panel. The temperature sensor and the electric guide rail are both communicatively connected to the controller.

[0020] The above-described technical solution of the present invention has the following beneficial technical effects:

[0021] 1. This invention divides the cabinet into Zone I and Zone II. Zone I houses multiple battery cells, while Zone II houses an energy storage converter. Trigger-activated fire extinguishing devices are installed between adjacent battery cells. When a fire breaks out inside the cabinet, a flexible isolation device in Zone II extends laterally. During this extension, the trigger-activated fire extinguishing device moves upward, releasing its inert gas into Zone I for rapid fire suppression. Once fully extended, the flexible isolation device isolates Zone I from Zone II. This design enables rapid response and source extinguishing in the initial stages of a battery cell fire. The lateral extension of the flexible isolation device simultaneously releases the extinguishing agent and isolates the area, effectively blocking the spread of heat and smoke to Zone II, where the energy storage converter is located, preventing the fire from spreading and causing cascading damage to electrical equipment, thus enhancing the active safety protection capabilities of the energy storage cabinet.

[0022] 2. Once the flexible isolation component extends into place, it can push the puncture-type fire extinguishing component located in Zone II downwards, releasing the inert gas inside into Zone II to prevent the fire in Zone I from spreading to Zone II, further ensuring the fire extinguishing effect. The above design utilizes the extension action of the flexible isolation component to trigger the secondary fire extinguishing action of the puncture-type fire extinguishing component in Zone II, forming a double inert gas protection barrier between Zone I and Zone II. Even if the fire of the battery pack composed of battery cells breaks through the isolation boundary, a fire extinguishing buffer zone can be established around the energy storage converter, effectively protecting the core electrical equipment from heat radiation and flame attack, and reducing the overall fire loss.

[0023] 3. The above design, through the extension action of the flexible isolation component, can achieve a stepped response of fire extinguishing, isolation, and secondary protection, effectively blocking the fire spread path from the thermal runaway of the battery pack to the energy storage converter and electrical equipment, improving the active safety protection level and fire emergency response efficiency of the photovoltaic energy storage cabinet, and reducing the risk of major fire accidents and economic losses. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a photovoltaic energy storage cabinet proposed in this invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of a photovoltaic energy storage cabinet proposed in this invention;

[0026] Figure 3 This is a front view of a photovoltaic energy storage cabinet proposed in this invention;

[0027] Figure 4 This is a schematic diagram of the flexible isolation component in this invention;

[0028] Figure 5 This is a schematic diagram of the trigger-type fire extinguishing device in this invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the fire extinguishing cylinder in this invention;

[0030] Figure 7 This is a schematic diagram of the puncture-type fire extinguishing device in this invention;

[0031] Figure 8 This is a schematic diagram of the loading cylinder in this invention;

[0032] Figure 9 This is a schematic diagram of the fit between the exhaust section and the sealing membrane in this invention.

[0033] Reference numerals: 1. Cabinet; 101. Mounting bracket; 102. Battery cell; 103. Energy storage converter; 104. Loading rack; 105. Temperature sensor; 106. Door panel; 107. Controller; 2. Trigger-activated fire extinguishing device; 21. Fire extinguishing cylinder; 211. Vent; 212. First partition plate; 22. Elastic sealing part; 221. Movable rod; 222. First dome; 223. First spring; 224. Sealing plug; 23. First air inlet; 2 31. First valve; 3. Piercing extinguishing element; 31. Loading cylinder; 311. Second partition; 32. Elastic piercing part; 321. Piercing rod; 322. Second dome; 323. Second spring; 33. Exhaust part; 331. Movable sleeve; 332. Exhaust pipe; 333. Air outlet; 34. Sealing membrane; 35. Second air inlet; 351. Second valve; 4. Flexible isolation element; 41. Electric guide rail; 42. Diamond block; 43. Fireproof cloth. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0035] like Figure 1-9 As shown, the present invention proposes a photovoltaic energy storage cabinet, which includes a cabinet body 1;

[0036] The cabinet 1 is divided into area I and area II by mounting frame 101. Multiple battery cells 102 are arranged at intervals and located in area I. Trigger-type fire extinguishing device 2 is installed between adjacent battery cells 102 and mounted on mounting frame 101.

[0037] Area II is equipped with an energy storage converter 103 and a puncture-type fire extinguishing device 3 located on one side of it. Both the trigger-type fire extinguishing device 2 and the puncture-type fire extinguishing device 3 are filled with inert gas.

[0038] A flexible isolation element 4 that can move laterally and extend and fold is installed in area II;

[0039] The flexible isolation member 4 has a first position state and a second position state. In the first position state, it is in a folded form. In the second position state, the flexible isolation member 4 moves laterally to extend and isolate area I and area II. During the extension process, it pushes the trigger-type fire extinguishing member 2 to move upward to release inert gas in area I, and pushes the puncture-type fire extinguishing member 3 to move downward to release inert gas in area II.

[0040] When the photovoltaic energy storage cabinet is operating normally, the flexible isolator 4 is in its first position, i.e., folded, which does not occupy extra space and ensures airflow between area I and area II. When the battery cell 102 in area I inside the cabinet 1 overheats and catches fire due to a fault, the flexible isolator 4 activates, moving laterally and extending to its second position. During this extension, the flexible isolator 4 pushes the trigger-type fire extinguishing device 2 upward, triggering it to release inert gas into area I, rapidly reducing the oxygen concentration around the fire source and achieving a rapid fire extinguishing effect. At the same time, after the flexible isolator 4 is fully extended, it effectively isolates area I from area II, preventing the fire and high-temperature smoke from spreading to area II, where the energy storage converter 103 is located. In addition, the flexible isolation element 4 also pushes the puncture-type fire extinguishing element 3 downward, triggering it to release inert gas into area II, forming a double inert gas protection barrier between area I and area II. Even if the fire of the battery pack composed of cells 102 breaks through the isolation boundary, a fire extinguishing buffer zone can be established around the energy storage converter 103, effectively protecting the core electrical equipment from heat radiation and flame attack. The above design, through the extension action of the flexible isolation element 4, can realize a stepped response of fire extinguishing, isolation and secondary protection, effectively blocking the fire spread path from the thermal runaway of the battery pack to the energy storage converter 103 and electrical equipment, and improving the active safety protection level and fire emergency response efficiency of the photovoltaic energy storage cabinet.

[0041] In this embodiment, the flexible isolation component 4 includes an electric guide rail 41, a rhombus block 42, and a fireproof cloth 43. The electric guide rail 41 is horizontally installed on the inner wall of the back of the cabinet 1 and located in region II. The rhombus block 42 is installed on the drive end of the electric guide rail 41. The fireproof cloth 43 is connected between the rhombus block 42 and one side inner wall of the cabinet 1. The upper part of the rhombus block 42 has a symmetrically arranged first inclined surface, and the lower part has a symmetrically arranged second inclined surface.

[0042] When a fire breaks out inside cabinet 1, the electric guide rail 41 drives the rhombus block 42 to move laterally. The special design of the rhombus block 42, with symmetrically arranged inclined surfaces at the top and bottom, allows it to smoothly unfold or fold the fireproof cloth 43 during movement. When the rhombus block 42 moves to one side, the fireproof cloth 43 gradually unfolds, forming an effective isolation barrier to prevent the transfer of heat and smoke. At the same time, the inclined surface design of the rhombus block 42 also ensures that it can push the trigger-type fire extinguishing device 2 and the puncture-type fire extinguishing device 3 during movement, thereby releasing inert gas.

[0043] In this embodiment, the trigger-type fire extinguishing device 2 includes a fire extinguishing tube 21. A fire extinguishing tube 21 is provided between adjacent battery cells 102 and mounted on a mounting bracket 101. An exhaust port 211 is provided on the outer periphery of the top of the fire extinguishing tube 21. A first partition plate 212 is installed inside the fire extinguishing tube 21. An elastic sealing part 22 is installed on the first partition plate 212 to block the exhaust port 211, and the bottom of the elastic sealing part 22 extends to the bottom of the mounting bracket 101.

[0044] The trigger-type fire extinguishing device 2 remains sealed in the initial state, with the elastic sealing part 22 blocking the exhaust port 211 to prevent inert gas leakage. When the flexible isolation part 4 extends and pushes the elastic sealing part 22 upward, the exhaust port 211 is opened, allowing the inert gas in the fire extinguishing tube 21 to be quickly released into area I, achieving rapid fire extinguishing.

[0045] In this embodiment, the elastic sealing part 22 includes a movable rod 221. The movable rod 221 is slidably connected to the first partition plate 212. The bottom end of the movable rod 221 is fixed with a first dome 222 extending out of the bottom of the fire extinguishing tube 21 and located below the mounting bracket 101. A first spring 223 is sleeved on the movable rod 221, and the two ends of the first spring 223 are respectively connected to the first partition plate 212 and the first dome 222. The top of the fire extinguishing tube 21 has an opening. The top end of the movable rod 221 is fixed with a sealing plug 224 that can enter and exit the opening and seals the exhaust hole 211. Inert gas is disposed between the sealing plug 224 and the first partition plate 212.

[0046] Under normal conditions, the first spring 223 is in a naturally extended state, and its elastic force holds the first dome 222 downward. Under the action of the movable rod 221, the sealing plug 224 at the top is inserted into the top opening of the fire extinguishing tube 21 and completely blocks the exhaust port 211. The inert gas is sealed in the space between the sealing plug 224 and the first partition plate 212. When the flexible isolation member 4 is activated, the first inclined surface of the rhomboid block 42 pushes the first dome 222 to overcome the elastic force of the first spring 223 and move upward, driving the movable rod 221 and the sealing plug 224 to move upward synchronously. The sealing plug 224 disengages from the top opening and the exhaust port 211, the sealing state is released, and the inert gas is then released into area I through the exhaust port 211 to achieve rapid fire extinguishing.

[0047] In this embodiment, the outer periphery of the fire extinguishing cylinder 21 is connected to a first air inlet 23 that fills the space between the first partition plate 212 and the sealing plug 224 with gas, and a first valve 231 is installed on the first air inlet 23.

[0048] Under normal conditions, the first valve 231 is closed, sealing the filling channel and ensuring that the inert gas sealed inside the fire extinguishing tube 21 will not leak from the first air inlet 23, maintaining the fire extinguishing preparation state of the trigger-type fire extinguishing device 2. When the photovoltaic energy storage cabinet has completed factory testing, daily maintenance, or fire extinguishing operations, and it is necessary to replenish the inert gas of the trigger-type fire extinguishing device 2, the first valve 231 is opened, and the inert gas is filled into the storage area between the first partition plate 212 and the sealing plug 224 through a dedicated filling device connected to the first air inlet 23. After filling is completed, the first valve 231 is closed, so that the fire extinguishing tube 21 returns to the sealed inert gas storage state.

[0049] In this embodiment, the puncture-type fire extinguishing device 3 includes a loading cylinder 31, a loading frame 104 is installed in area II, an energy storage converter 103 is installed on the loading frame 104, the loading cylinder 31 is located on one side of the energy storage converter 103, an exhaust section 33 is detachably connected to the bottom of the loading cylinder 31, and the exhaust section 33 is detachably installed on the loading frame 104. A sealing membrane 34 is provided inside the exhaust section 33, and an elastic puncture part 32 for puncturing the sealing membrane 34 is installed on the loading cylinder 31.

[0050] Under normal conditions, the elastic puncture part 32 and the sealing membrane 34 remain separated. The sealing membrane 34 forms a seal on the bottom of the loading cylinder 31, so that the inert gas is sealed inside the loading cylinder 31. When the flexible isolation member 4 pushes the elastic puncture part 32, the elastic puncture part 32 moves down in the vertical direction and punctures the sealing membrane 34. The inert gas in the loading cylinder 31 enters the exhaust part 33 through the broken sealing membrane 34 and is released to area II from the exhaust part 33, realizing the fire extinguishing operation, preventing the fire from spreading from area I to area II, and protecting the core electrical equipment such as the energy storage converter 103 from damage.

[0051] In this embodiment, the elastic puncture part 32 includes a puncture rod 321. A second partition 311 is fixed inside the loading cylinder 31. A vertically arranged puncture rod 321 is slidably connected to the second partition 311. A second dome 322 extending out of the top of the loading cylinder 31 is fixed to the top of the puncture rod 321. A second spring 323 is sleeved on the puncture rod 321. The two ends of the second spring 323 are respectively connected to the second partition 311 and the second dome 322. The bottom end of the puncture rod 321 forms a pointed structure facing the sealing film 34.

[0052] When the flexible isolator 4 is working, the second inclined surface of the rhomboid block 42 pushes the second dome 322 to overcome the elastic force of the second spring 323 and move it downward, causing the piercing rod 321 to move downward synchronously. The tip structure at its bottom quickly pierces the sealing membrane 34, releasing the bottom sealing state of the loading cylinder 31 and allowing the inert gas to be released. After the external pressure disappears, the second spring 323 returns to its original state and pushes the piercing rod 321 upward, but its tip structure no longer contacts the sealing membrane 34, keeping the exhaust part 33 open so that the inert gas can be continuously released until it is exhausted.

[0053] In this embodiment, the exhaust section 33 includes a movable sleeve 331 and an exhaust pipe 332. The movable sleeve 331 is threadedly connected to the bottom of the loading cylinder 31. The exhaust pipe 332 is fixed to the bottom of the movable sleeve 331. A threaded groove is provided on the loading frame 104. The exhaust pipe 332 is threadedly engaged with the threaded groove. The sealing membrane 34 is connected to the top of the exhaust pipe 332. Inert gas is disposed between the second partition 311 and the sealing membrane 34. A plurality of circumferentially arranged air outlets 333 are provided on the outer periphery of the exhaust pipe 332.

[0054] The exhaust section 33 is connected to the bottom of the loading cylinder 31 by a movable sleeve 331, which is easy to disassemble and replace. When the sealing membrane 34 is punctured, the inert gas enters the exhaust pipe 332 and is evenly released to Zone II through multiple vent holes 333 on the outer periphery, forming an effective fire extinguishing barrier. This design ensures the rapid and uniform release of inert gas and improves the fire extinguishing efficiency.

[0055] In this embodiment, a second air inlet 35 for filling gas into the space between the second partition 311 and the sealing membrane 34 is connected to the outer periphery of the loading cylinder 31, and a second valve 351 is installed on the second air inlet 35.

[0056] The second air inlet 35 provides an inert gas filling channel for the loading cylinder 31. Under normal conditions, the second valve 351 is closed, forming a seal on the filling channel to ensure that the inert gas sealed inside the loading cylinder 31 does not leak from the second air inlet 35, maintaining the fire-extinguishing readiness state of the puncture-type fire extinguishing device 3. When the photovoltaic energy storage cabinet has completed routine maintenance or fire-extinguishing operations, and it is necessary to replenish the inert gas for the puncture-type fire extinguishing device 3, first disassemble the exhaust section 33 and replace the new sealing membrane 34, then reconnect the exhaust section 33 to the loading cylinder 31, and then open the second valve 351. The inert gas is filled into the storage area between the second partition 311 and the sealing membrane 34 by connecting a dedicated inflation device to the second air inlet 35. After inflation, the second valve 351 is closed, so that the loading cylinder 31 returns to the sealed inert gas storage state. The effect of this design is to realize the refillable inert gas of the puncture-type fire extinguishing device 3, reduce equipment maintenance costs, and ensure the sealing of the inflation channel by the sealing structure of the second valve 351 to prevent inert gas leakage. With the replacement of the new sealing membrane 34, the fire extinguishing function of the puncture-type fire extinguishing device 3 can be quickly restored.

[0057] In this embodiment, a temperature sensor 105 is installed on the top of area I, and the temperature sensor 105 is used to monitor the temperature of area I. A door panel 106 is installed on the front side of cabinet 1, and a controller 107 is installed on the door panel 106. The temperature sensor 105 and the electric guide rail 41 are both connected to the controller 107.

[0058] Temperature sensor 105 at the top of area I continuously monitors the ambient temperature of area 102 in real time and transmits the monitored temperature data to controller 107 on door panel 106. Controller 107 has a preset temperature threshold for normal operation of area 102. When the received temperature data does not exceed the threshold, controller 107 determines that the photovoltaic energy storage cabinet is in normal working condition and does not issue any action command. Flexible isolation component 4 remains in the first folded position, and both trigger-type fire extinguishing component 2 and puncture-type fire extinguishing component 3 remain normally sealed. When temperature sensor 105 detects that the temperature in area I exceeds the preset threshold and determines that area 102 is abnormally overheating or at risk of fire, temperature sensor 105 transmits the hazard signal to controller 107. Controller 107 immediately issues an action command, activating the electric guide rail 41 of flexible isolation component 4, triggering subsequent isolation and fire extinguishing linkage actions. The effect of this design is to achieve automated and real-time monitoring and early warning of fire hazards in photovoltaic energy storage cabinets, realize automatic triggering of fire extinguishing and isolation actions without manual operation, improve the emergency response speed of photovoltaic energy storage cabinets, and eliminate fire hazards in the early stage.

[0059] It should be noted that the inert gases used in this invention include, but are not limited to, carbon dioxide.

[0060] The embodiments of the present invention have been described above. However, the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present embodiments, all of which are within the protection scope of the present embodiments.

Claims

1. A photovoltaic energy storage cabinet, characterized in that, Including the cabinet (1); The cabinet (1) is divided into area I and area II by a mounting frame (101). Multiple battery cells (102) are installed on the mounting frame (101) and located in area I. A trigger-type fire extinguishing device (2) is installed on the mounting frame (101) between adjacent battery cells (102). The area II is equipped with an energy storage converter (103) and a puncture-type fire extinguishing device (3) located on one side therein. Both the trigger-type fire extinguishing device (2) and the puncture-type fire extinguishing device (3) are filled with inert gas. A flexible isolation component (4) that can move laterally and extend and fold is installed in the II area; The flexible isolation member (4) has a first position state and a second position state. In the first position state, it is in a folded form. In the second position state, the flexible isolation member (4) moves laterally to extend and isolate area I and area II. During the extension process, it pushes the trigger-type fire extinguishing member (2) to move upward to release inert gas in area I and pushes the puncture-type fire extinguishing member (3) to move downward to release inert gas in area II.

2. The photovoltaic energy storage cabinet according to claim 1, characterized in that, The flexible isolation component (4) includes an electric guide rail (41), a rhombus block (42), and a fireproof cloth (43). The electric guide rail (41) is horizontally installed on the inner wall of the back of the cabinet (1) and located in area II. The rhombus block (42) is installed at the drive end of the electric guide rail (41). The fireproof cloth (43) is connected between the rhombus block (42) and the inner wall of one side of the cabinet (1). The upper part of the rhombus block (42) has a first inclined surface arranged symmetrically, and the lower part has a second inclined surface arranged symmetrically.

3. A photovoltaic energy storage cabinet according to claim 2, characterized in that, The trigger-type fire extinguishing device (2) includes a fire extinguishing tube (21). Each adjacent cell (102) is provided with a fire extinguishing tube (21) mounted on a mounting frame (101). The top outer periphery of the fire extinguishing tube (21) is provided with an exhaust hole (211). A first partition plate (212) is installed inside the fire extinguishing tube (21). An elastic sealing part (22) is installed on the first partition plate (212) to block the exhaust hole (211), and the bottom of the elastic sealing part (22) extends to the bottom of the mounting frame (101).

4. A photovoltaic energy storage cabinet according to claim 3, characterized in that, The elastic sealing part (22) includes a movable rod (221). The movable rod (221) is slidably connected to the first partition (212). The bottom end of the movable rod (221) is fixed with a first dome (222) extending out of the bottom of the fire extinguishing tube (21) and located below the mounting bracket (101). A first spring (223) is sleeved on the movable rod (221), and the two ends of the first spring (223) are respectively connected to the first partition (212) and the first dome (222). The top of the fire extinguishing tube (21) is provided with an opening. The top end of the movable rod (221) is fixed with a sealing plug (224) that can enter and exit the opening and seal the exhaust hole (211). Inert gas is disposed between the sealing plug (224) and the first partition (212).

5. A photovoltaic energy storage cabinet according to claim 4, characterized in that, The fire extinguishing tube (21) is connected to a first air inlet (23) that fills the gas between the first partition (212) and the sealing plug (224). A first valve (231) is installed on the first air inlet (23).

6. A photovoltaic energy storage cabinet according to claim 1, characterized in that, The puncture-type fire extinguishing device (3) includes a loading cylinder (31), a loading frame (104) is installed in the II area, the energy storage converter (103) is installed on the loading frame (104), the loading cylinder (31) is located on one side of the energy storage converter (103), the bottom of the loading cylinder (31) is detachably connected to an exhaust part (33), and the exhaust part (33) is detachably installed on the loading frame (104). A sealing membrane (34) is provided inside the exhaust part (33), and an elastic puncture part (32) for puncturing the sealing membrane (34) is installed on the loading cylinder (31).

7. A photovoltaic energy storage cabinet according to claim 6, characterized in that, The elastic puncture part (32) includes a puncture rod (321). A second partition (311) is fixed inside the loading cylinder (31). A vertically arranged puncture rod (321) is slidably connected to the second partition (311). A second dome (322) extending out of the top of the loading cylinder (31) is fixed at the top of the puncture rod (321). A second spring (323) is sleeved on the puncture rod (321). The two ends of the second spring (323) are respectively connected to the second partition (311) and the second dome (322). The bottom end of the puncture rod (321) forms a pointed structure facing the sealing membrane (34).

8. A photovoltaic energy storage cabinet according to claim 7, characterized in that, The exhaust section (33) includes a movable sleeve (331) and an exhaust pipe (332). The movable sleeve (331) is threaded to the bottom of the loading cylinder (31). The exhaust pipe (332) is fixed at the bottom of the movable sleeve (331). The loading frame (104) has a threaded groove. The exhaust pipe (332) is threaded into the threaded groove. The sealing membrane (34) is connected to the top of the exhaust pipe (332). Inert gas is placed between the second partition (311) and the sealing membrane (34). The outer periphery of the exhaust pipe (332) has a plurality of circumferentially arranged air outlets (333).

9. A photovoltaic energy storage cabinet according to claim 8, characterized in that, The outer periphery of the loading cylinder (31) is connected to a second air inlet (35) for filling gas between the second diaphragm (311) and the sealing membrane (34), and a second valve (351) is installed on the second air inlet (35).

10. A photovoltaic energy storage cabinet according to claim 1, characterized in that, A temperature sensor (105) is installed on the top of the I area, and the temperature sensor (105) is used to monitor the temperature of the I area. A door panel (106) is installed on the front side of the cabinet (1), and a controller (107) is installed on the door panel (106). The temperature sensor (105) and the electric guide rail (41) are both connected to the controller (107).

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