A highly integrated low-voltage battery cabinet with intelligent start-up fire protection and its protection method

Abstract

This invention relates to a highly integrated low-voltage battery cabinet with intelligent start-up fire protection and its protection method, comprising a cabinet body with a monitoring panel rotatably mounted on it; and a housing; a mounting frame mounted on the housing, a guide rail mounted on the mounting frame, a lifting frame slidably fitted on the guide rail, a main pipeline mounted on the lifting frame, and multiple sets of sprinklers rotatably mounted on the main pipeline; a pumping component, a lifting component, and a reciprocating component are installed inside the cabinet; when the monitoring panel detects an abnormal operating status of the battery cabinet, the pumping component pumps fire-fighting fluid from the housing to the sprinklers, and the lifting component drives the sprinklers to rise, while the reciprocating component drives the sprinklers to swing horizontally back and forth; through the cooperation of the pumping component, the lifting component, and the reciprocating component, efficient, comprehensive, and intelligent fire protection of the battery pack is achieved, which can simultaneously expand the spraying area in both horizontal and vertical directions, eliminating the fire blind spot problem of high-position or edge battery packs.

Description

Technical Field

[0001] This invention relates to a low-voltage battery cabinet, specifically a highly integrated low-voltage battery cabinet with intelligent start-up fire protection and its protection method. Background Technology

[0002] With the rapid development of new energy technologies, low-voltage battery cabinets have been widely used in energy storage systems, communication base stations, data centers, and electric vehicles. Battery cabinets typically house a large number of battery packs, which generate heat during charging and discharging, posing safety hazards such as overcharging, short circuits, and thermal runaway. Without effective monitoring and protection measures, a fire or explosion of a battery pack can not only damage equipment but also trigger a chain reaction, leading to significant property damage and safety accidents.

[0003] Common battery cabinets typically consist of a cabinet body, inside which multiple sets of fire sprinklers are fixedly installed, and the fire sprinkler pipes are evenly connected. When the monitoring system detects a fire, it will control the sprinklers to open, thereby spraying fire extinguishing liquid into the cabinet body to perform fire extinguishing actions.

[0004] Because most existing fire sprinklers in battery cabinets are fixed, while this improves sprinkler stability and prevents changes in fire angle due to sprinkler position shift during standby, the spray range of fixed sprinklers is limited both vertically and horizontally, making it impossible to dynamically adjust according to the height distribution of battery packs or the location of the fire. In cases where there are many layers or densely packed battery packs within the cabinet, fixed-height sprinklers often only cover a portion of the area, resulting in upper or edge battery packs not receiving timely and effective cooling and fire suppression during a fire, thus creating fire-fighting blind spots. Summary of the Invention

[0005] The purpose of this invention is to provide a highly integrated low-voltage battery cabinet with intelligent start-up fire protection and its protection method to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A highly integrated low-voltage battery cabinet with intelligent start-up fire protection includes a cabinet body, on which a monitoring panel is rotatably mounted for closing the cabinet body and for monitoring the real-time status of the battery cabinet; the cabinet body is used to install and protect the battery modules.

[0008] It also includes a box installed on the cabinet, the box being filled with fire-fighting fluid;

[0009] An installation frame is mounted on the housing, a guide rail is mounted on the installation frame, a lifting frame is slidably fitted on the guide rail, a main pipeline is mounted on the lifting frame, and multiple sets of nozzles are rotatably mounted on the main pipeline.

[0010] The cabinet is equipped with a pumping component, a lifting component, and a reciprocating component that work together. When the monitoring panel detects an abnormal operating status of the battery cabinet, the pumping component will pump the fire-fighting fluid in the cabinet to the sprinkler head, and the lifting component will drive the sprinkler head to rise. At the same time, the reciprocating component will drive the sprinkler head to swing back and forth horizontally.

[0011] The highly integrated low-voltage battery cabinet with intelligent start-up fire protection as described above: the lifting component includes a motor mounted on the mounting frame, a lead screw is mounted on the output end of the motor, and a threaded sleeve that is threadedly engaged with the lead screw is mounted on the lifting frame.

[0012] The highly integrated low-voltage battery cabinet with intelligent start-up fire protection as described above: the pumping component includes a connecting plate installed inside the cabinet, and multiple sets of fixing sleeves are installed on the connecting plate. The fixing sleeves are connected to the liquid inlet pipe and the liquid outlet pipe through a one-way valve; wherein the multiple sets of liquid outlet pipes are connected to the main pipeline through a connector, and a piston is slidably and sealingly fitted inside the fixing sleeve.

[0013] The highly integrated low-voltage battery cabinet with intelligent start-up fire protection as described above includes: the pumping component further includes a rotating shaft rotatably mounted on the connecting plate; a second bevel gear is mounted on the rotating shaft; a first bevel gear meshing with the second bevel gear is mounted on the end of the lead screw column; cams are mounted on both ends of the rotating shaft; protruding columns are mounted on the cams; a lifting plate is mounted on the piston, and a lifting groove that slides and engages with the protruding columns is provided on the lifting plate.

[0014] The highly integrated low-voltage battery cabinet with intelligent start-up fire protection as described above: when one of the pistons slides upward, the other piston slides downward.

[0015] The highly integrated low-voltage battery cabinet with intelligent start-up fire protection as described above: the connector includes a fixed conduit fixedly connected to the cabinet body, the fixed conduit communicating with the liquid outlet pipe, and a telescopic pipe installed on the main pipeline; a transition expansion joint that is slidably and sealingly fitted with the telescopic pipe is provided on the fixed conduit.

[0016] The highly integrated low-voltage battery cabinet for intelligent fire protection described above includes: a reciprocating component comprising a protruding column mounted on the sprinkler head; a sliding plate slidably mounted on the lifting frame; multiple sets of rotating grooves slidably engaging with the protruding column on the sliding plate; a top rod mounted on the sliding plate, with rollers rotatably mounted on the top rod; a baffle mounted on the mounting frame; the baffle and the rollers rollingly engaging; and a return spring provided on the lifting frame, with both ends of the return spring contacting the sliding plate and the lifting frame respectively.

[0017] The highly integrated low-voltage battery cabinet with intelligent start-up fire protection as described above: the surface of the baffle that mates with the roller is wavy.

[0018] The highly integrated low-voltage battery cabinet with intelligent start-up fire protection as described above: the cabinet has multiple sets of slots.

[0019] A method for protecting a battery pack when its operating state is abnormal using a highly integrated low-voltage battery cabinet with intelligent start-up fire protection as described above, comprising the following steps:

[0020] Step 1: The monitoring panel monitors the operating status of the battery pack inside the cabinet in real time, triggering an audible and visual alarm when gas concentration / temperature is abnormal; and when a fire is confirmed, the monitoring panel initiates fire extinguishing operations.

[0021] Step 2: Firefighting fluid pumping. The pumping unit is activated, continuously pumping special firefighting fluid to the sprinkler head, so that the firefighting fluid is sprayed to the battery pack through the sprinkler head.

[0022] Step 3: Vertical coverage. The lifting mechanism moves, causing the main pipeline to rise, so that the spray area of ​​the nozzles can cover all battery packs in the vertical direction.

[0023] Step 4: Horizontal coverage. The reciprocating motion drives the nozzle to swing back and forth, so that the spray area of ​​the nozzle covers the battery pack in the horizontal direction.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] During a fire, the pumping of fire-fighting fluid and the raising, lowering, and oscillating of the sprinklers are automatically coordinated and controlled by the monitoring system. This means that through the cooperation of the pumping, raising, and reciprocating components, efficient, comprehensive, and intelligent fire protection for the battery packs is achieved. The raising component drives the sprinklers to rise vertically and can simultaneously adjust the sprinkler height, ensuring that the fire-fighting fluid can effectively cover battery packs of different heights within the battery cabinet. At the same time, the reciprocating component drives the sprinklers to oscillate horizontally, expanding the horizontal spraying range. This allows for simultaneous expansion of the spraying area in both horizontal and vertical directions, eliminating fire blind spots for high-positioned or edge battery packs. Attached Figure Description

[0026] Figure 1 A schematic diagram of a highly integrated low-voltage battery cabinet for intelligent fire protection.

[0027] Figure 2 A schematic diagram of the installation frame in a highly integrated low-voltage battery cabinet for intelligent start-up fire protection.

[0028] Figure 3 A schematic diagram of the lead screw column in a highly integrated low-voltage battery cabinet for intelligent start-up fire protection.

[0029] Figure 4 A schematic diagram of the lifting frame in a highly integrated low-voltage battery cabinet for intelligent start-up fire protection.

[0030] Figure 5 for Figure 4 A schematic diagram of the structure at point A in the middle.

[0031] Figure 6 for Figure 4 A schematic diagram of the structure at point B.

[0032] Figure 7 A schematic diagram of the fixed sleeve in a highly integrated low-voltage battery cabinet for intelligent start-up fire protection.

[0033] Figure 8 for Figure 7 A schematic diagram of the structure at point C.

[0034] Figure 9 A schematic diagram of the cam structure in a highly integrated low-voltage battery cabinet for intelligent start-up fire protection.

[0035] Figure 10 A schematic diagram of the lifting plate in a highly integrated low-voltage battery cabinet for intelligent start-up fire protection.

[0036] In the picture:

[0037] 1. Cabinet; 101. Groove; 102. Monitoring panel;

[0038] 2. Battery module;

[0039] 3. Box body;

[0040] 4. Mounting frame; 401 guide rail;

[0041] 5. Lifting frame; 501. Threaded sleeve;

[0042] 6. Electric motor;

[0043] 7. Lead screw; 701. First bevel gear;

[0044] 8. Main pipeline; 801. Expansion joint;

[0045] 9. Nozzle; 901. Protruding column;

[0046] 10. Slide plate; 1001. Rotary slide; 1002. Top rod;

[0047] 11. Rollers;

[0048] 12. Baffle;

[0049] 13. Fixing sleeve;

[0050] 14. Connecting plate;

[0051] 15. Shaft; 1501. Second bevel gear;

[0052] 16. Cam; 1601. Protruding column;

[0053] 17. Piston;

[0054] 18. Lifting plate; 1801. Lifting slide rail;

[0055] 19. Secure the catheter;

[0056] 20. Transition expansion joint;

[0057] 21. Return spring. Detailed Implementation

[0058] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0060] Please see Figures 1-10As an embodiment of the present invention, the intelligent start-up fire protection highly integrated integrated low-voltage battery cabinet includes a cabinet body 1, on which a monitoring panel 102 for closing the cabinet body 1 and for monitoring the real-time status of the battery cabinet is rotatably mounted; the cabinet body 1 is used to install and protect the battery module 2.

[0061] It also includes a box 3 installed on the cabinet 1, the box 3 being filled with fire-fighting liquid;

[0062] An installation frame 4 is installed on the housing 3. A guide rail 401 is installed on the installation frame 4. A lifting frame 5 is slidably fitted on the guide rail 401. A main pipeline 8 is installed on the lifting frame 5. Multiple sets of nozzles 9 are rotatably installed on the main pipeline 8.

[0063] The cabinet 1 is equipped with a pumping component, a lifting component, and a reciprocating component that work together. When the monitoring panel 102 detects an abnormal operating status of the battery cabinet, the pumping component will pump the fire-fighting fluid in the cabinet 3 to the sprinkler head 9, and the lifting component will drive the sprinkler head 9 to rise. At the same time, the reciprocating component will drive the sprinkler head 9 to swing back and forth horizontally.

[0064] In this embodiment, the monitoring panel 102 monitors the operating status of the battery pack in the battery cabinet in real time. When the temperature exceeds the preset safety threshold or the concentration of combustible gas (such as hydrogen or carbon monoxide) exceeds the standard, the monitoring panel 102 will immediately trigger an audible and visual alarm to remind on-site personnel to pay attention.

[0065] If the system determines that a fire has occurred (e.g., due to a continuous rise in temperature or a sharp increase in gas concentration), the monitoring panel 102 will automatically activate the fire protection program:

[0066] The pumping unit starts working, transporting the fire-fighting fluid in the tank 3 to the sprinkler head 9 through the main pipeline 8;

[0067] The lifting mechanism drives the lifting frame 5 to move upward along the guide rail 401, so that the height of the nozzle 9 gradually increases, ensuring that the fire-fighting liquid can cover different layers of the battery pack.

[0068] The reciprocating component drives the nozzle 9 to swing back and forth in the horizontal direction, expanding the spray range and making the fire-fighting liquid evenly sprayed on the surface of the battery pack and the surrounding space, so as to achieve the purpose of rapid cooling and suppression of combustion.

[0069] Throughout the process, the pumping of fire-fighting fluid and the raising, lowering, and swinging of the sprinkler head 9 are all automatically coordinated and controlled by the monitoring system without manual intervention, thereby achieving efficient, comprehensive, and intelligent fire protection for the battery pack.

[0070] As a further embodiment of the present invention, the lifting component includes a motor 6 mounted on the mounting frame 4, a lead screw 7 mounted on the output end of the motor 6, and a threaded sleeve 501 that is threadedly engaged with the lead screw 7 mounted on the lifting frame 5.

[0071] In this embodiment, when a fire is detected, the motor 6 activates, thereby driving the lead screw 7 to rotate. This rotation, through threaded engagement, causes the threaded sleeve 501 to move along the height direction of the lead screw 7, which in turn moves the lifting frame 5 upward on the guide rail 401. This causes the main pipeline 8 and multiple sets of sprinklers 9 to rise synchronously. During this process, the sprinklers 9 continuously spray fire extinguishing liquid, which can gradually cover the entire battery pack area inside the cabinet 1 in the vertical direction, effectively eliminating fire blind spots caused by height differences and ensuring comprehensive and thorough fire extinguishing coverage. The real-time height-adjustable sprinklers 9 can reduce the number of sprinklers required, thereby reducing protection and maintenance costs.

[0072] As a further embodiment of the present invention, the pumping component includes a connecting plate 14 installed inside the housing 3. Multiple sets of fixing sleeves 13 are installed on the connecting plate 14. The fixing sleeves 13 are connected to an inlet pipe and an outlet pipe through a one-way valve. The multiple sets of outlet pipes are connected to the main pipeline 8 through a connector. A piston 17 is slidably and sealingly fitted inside the fixing sleeve 13.

[0073] In this embodiment, when the motor 6 is activated, it drives the piston 17 to reciprocate up and down in the fixed sleeve 13. Under the action of the one-way valve, during the upward movement, the fire-fighting fluid enters the fixed sleeve 13 from the inlet pipe, and during the downward movement, the fire-fighting fluid enters the main pipeline 8 from the outlet pipe, and is finally sprayed out by the nozzle 9. Through the alternating reciprocating motion of multiple sets of pistons 17 in multiple sets of fixed sleeves 13, the fire-fighting fluid can be continuously and stably pumped to the nozzle 9, achieving efficient fire extinguishing operations.

[0074] As a further embodiment of the present invention, the pumping component further includes a rotating shaft 15 rotatably mounted on the connecting plate 14; a second bevel gear 1501 is mounted on the rotating shaft 15; a first bevel gear 701 meshing with the second bevel gear 1501 is mounted on the end of the lead screw 7; cams 16 are mounted on both ends of the rotating shaft 15; protruding posts 1601 are mounted on the cams 16; a lifting plate 18 is mounted on the piston 17, and a lifting groove 1801 is provided on the lifting plate 18 to slide and engage with the protruding posts 1601.

[0075] As a further embodiment of the invention, when one of the pistons 17 slides upward, the other piston 17 slides downward.

[0076] In this embodiment, when the motor 6 drives the lead screw 7 to rotate, the first bevel gear 701 rotates accordingly, driving the second bevel gear 1501 meshing with it to rotate, thereby causing the rotating shaft 15 to rotate synchronously. The cams 16 at both ends of the rotating shaft 15 rotate together, and the protrusions 1601 on the cams 16 slide within the lifting grooves 1801 of the lifting plate 18, pushing the lifting plate 18 and the piston 17 fixed thereto to reciprocate up and down. Since the two pistons 17 are located on opposite sides of the rotating shaft 15 and are driven by the same rotating shaft 15, when one piston 17 moves upward, the other piston 17 moves downward. This alternating reciprocating motion allows the fire-fighting fluid in the fixed sleeve 13 to be continuously drawn in and discharged, thereby ensuring the smoothness and continuity of the pumping process and avoiding flow fluctuations or interruptions in fire extinguishing.

[0077] When a fire occurs, the rotation of motor 6 can simultaneously drive the lifting and pumping components, so that the rise of nozzle 9 and the pumping of fire-fighting fluid are almost synchronous, without waiting for the independent pump to start, thereby shortening the system response time and improving fire-fighting efficiency.

[0078] As a further embodiment of the present invention, the connector includes a fixed conduit 19 fixedly connected to the housing 3, the fixed conduit 19 being connected to the liquid outlet pipe, and a telescopic pipe 801 being installed on the main pipeline 8; a transition expansion joint 20 that is slidably and sealingly fitted with the telescopic pipe 801 is slidably and sealingly fitted on the fixed conduit 19.

[0079] In this embodiment, when the lifting component drives the lifting frame 5 and the main pipeline 8 to move up and down along the guide rail 401, the telescopic pipe 801 fixed on the main pipeline 8 will extend and retract accordingly. At this time, the transition expansion joint 20 slides relative to the fixed conduit 19 while maintaining a sealed fit with the telescopic pipe 801, ensuring that the fire-fighting fluid will not leak during transmission. This structure allows the main pipeline 8 to move freely up and down in the vertical direction, and can maintain a stable connection between the outlet pipe and the main pipeline 8 at any height, thereby ensuring that the fire-fighting fluid output by the pump can be continuously and reliably delivered to the sprinkler head 9, so that the sprinkler head 9 can continue to perform fire-fighting operations without interruption even during the lifting and lowering process.

[0080] As a further embodiment of the present invention, the reciprocating component includes a protruding post 901 mounted on the nozzle 9; a sliding plate 10 is slidably mounted on the lifting frame 5; the sliding plate 10 has multiple sets of rotating grooves 1001 that slidably engage with the protruding post 901; a top rod 1002 is mounted on the sliding plate 10, and a roller 11 is rotatably mounted on the top rod 1002; a baffle 12 is mounted on the mounting frame 4; the baffle 12 rolls in cooperation with the roller 11; and a return spring 21 is provided on the lifting frame 5, with both ends of the return spring 21 abutting against the sliding plate 10 and the lifting frame 5, respectively.

[0081] As a further embodiment of the present invention, the surface of the baffle 12 that mates with the roller 11 is wavy.

[0082] In this embodiment, as the lifting frame 5 moves upward with the lifting component, the roller 11 rolls along the wavy baffle 12. The wavy surface causes the roller 11 to be subjected to alternating high and low thrusts during rolling, thereby pushing the slide plate 10 to slide horizontally back and forth on the lifting frame 5. The movement of the slide plate 10 drives the nozzle 9 to swing back and forth around its own axis through the rotating groove 1001 opened on it, achieving extensive horizontal coverage of the fire-fighting liquid. At the same time, the return spring 21 always applies a counterforce to the slide plate 10, so that it can quickly return to its original position under each wave thrust, ensuring the continuity and stability of the swing; further improving the fire-fighting coverage and efficiency.

[0083] As a further embodiment of the present invention, the cabinet 1 has multiple sets of slots 101.

[0084] In this embodiment, under non-fire conditions, the slot 101 can also serve as a daily ventilation and heat dissipation device, and facilitate operators to observe the internal condition of the cabinet 1 during maintenance and inspection.

[0085] A method for protecting a battery pack when its operating state is abnormal using a highly integrated low-voltage battery cabinet with intelligent start-up fire protection as described above, comprising the following steps:

[0086] Step 1: The monitoring panel 102 monitors the operating status of the battery pack inside the cabinet 1 in real time, and triggers an audible and visual alarm when the gas concentration / temperature is abnormal; when a fire is confirmed, the monitoring panel 102 performs fire extinguishing operations.

[0087] Step 2: Firefighting fluid pumping. The pumping unit is activated, continuously pumping special firefighting fluid to nozzle 9, so that the firefighting fluid is sprayed to the battery pack through nozzle 9.

[0088] Step 3: Vertical coverage. The lifting mechanism moves, causing the main pipeline 8 to rise, so that the spray area of ​​the nozzle 9 can cover all battery packs in the vertical direction.

[0089] Step 4: Horizontal coverage, reciprocating motion, by driving the nozzle 9 to swing back and forth, so that the spray area of ​​the nozzle 9 covers the battery pack in the horizontal direction.

[0090] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0091] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A highly integrated low-voltage battery cabinet with intelligent start-up fire protection, comprising a cabinet body (1), wherein a monitoring panel (102) for closing the cabinet body (1) and for monitoring the real-time status of the battery cabinet is rotatably mounted on the cabinet body (1); the cabinet body (1) is used to install and protect battery modules (2). Its features are, It also includes a box (3) installed on the cabinet (1), the box (3) being filled with fire-fighting liquid; An installation frame (4) is installed on the housing (3), a guide rail (401) is installed on the installation frame (4), a lifting frame (5) is slidably fitted on the guide rail (401), a main pipeline (8) is installed on the lifting frame (5), and multiple sets of nozzles (9) are rotatably installed on the main pipeline (8). The cabinet (1) is equipped with a pumping component, a lifting component and a reciprocating component that cooperate with each other; when the monitoring panel (102) detects that the battery cabinet is in an abnormal operating state, the pumping component will pump the fire-fighting liquid in the cabinet (3) to the nozzle (9), and the lifting component will drive the nozzle (9) to rise. At the same time, the reciprocating component will drive the nozzle (9) to swing back and forth horizontally.

2. The highly integrated low-voltage battery cabinet with intelligent start-up fire protection according to claim 1, characterized in that, The lifting component includes a motor (6) mounted on the mounting frame (4), a lead screw (7) mounted on the output end of the motor (6), and a threaded sleeve (501) that is threadedly engaged with the lead screw (7) mounted on the lifting frame (5).

3. The highly integrated low-voltage battery cabinet with intelligent start-up fire protection according to claim 2, characterized in that, The pumping component includes a connecting plate (14) installed inside the housing (3). Multiple sets of fixed sleeves (13) are installed on the connecting plate (14). The fixed sleeves (13) are connected to the inlet pipe and the outlet pipe through a one-way valve. The multiple sets of outlet pipes are connected to the main pipeline (8) through a connector. A piston (17) is slidably and sealed inside the fixed sleeve (13).

4. The highly integrated low-voltage battery cabinet with intelligent start-up fire protection according to claim 3, characterized in that, The pumping component also includes a rotating shaft (15) rotatably mounted on the connecting plate (14); a second bevel gear (1501) is mounted on the rotating shaft (15); a first bevel gear (701) meshing with the second bevel gear (1501) is mounted on the end of the lead screw (7); cams (16) are mounted on both ends of the rotating shaft (15); a protruding column (1601) is mounted on the cam (16); a lifting plate (18) is mounted on the piston (17), and a lifting groove (1801) is opened on the lifting plate (18) to slide and engage with the protruding column (1601).

5. A highly integrated low-voltage battery cabinet with intelligent start-up fire protection according to claim 4, characterized in that, When one of the pistons (17) slides upward, the other piston (17) slides downward.

6. The highly integrated low-voltage battery cabinet with intelligent start-up fire protection according to claim 4, characterized in that, The connector includes a fixed conduit (19) fixedly connected to the housing (3), the fixed conduit (19) being connected to the outlet pipe, and a telescopic pipe (801) installed on the main pipeline (8); a transition expansion joint (20) is slidably and sealingly fitted on the fixed conduit (19) and slidably and sealingly fitted with the telescopic pipe (801).

7. A highly integrated low-voltage battery cabinet with intelligent start-up fire protection according to claim 4, characterized in that, The reciprocating component includes a protruding post (901) mounted on the nozzle (9); a sliding plate (10) is slidably mounted on the lifting frame (5); the sliding plate (10) has multiple sets of rotating grooves (1001) that slidably engage with the protruding post (901); a top rod (1002) is mounted on the sliding plate (10), and a roller (11) is rotatably mounted on the top rod (1002); a baffle (12) is mounted on the mounting frame (4); the baffle (12) rolls in cooperation with the roller (11); a return spring (21) is provided on the lifting frame (5), and the two ends of the return spring (21) respectively abut against the sliding plate (10) and the lifting frame (5).

8. A highly integrated low-voltage battery cabinet with intelligent start-up fire protection according to claim 7, characterized in that, The surface of the baffle (12) that mates with the roller (11) is wavy.

9. A highly integrated low-voltage battery cabinet with intelligent start-up fire protection according to claim 1, characterized in that, The cabinet (1) has multiple slots (101).

10. A method for protecting a battery pack when its operating state is abnormal using a highly integrated low-voltage battery cabinet with intelligent start-up fire protection as described in any one of claims 1-9, characterized in that... Includes the following steps: Step 1: The monitoring panel (102) monitors the operating status of the battery pack inside the cabinet (1) in real time, and triggers an audible and visual alarm when the gas concentration / temperature is abnormal; when a fire is confirmed, the monitoring panel (102) performs fire extinguishing operations; Step 2: Firefighting fluid pumping. The pumping unit is activated, and the special firefighting fluid is continuously pumped to the nozzle (9) so that the firefighting fluid is sprayed to the battery pack through the nozzle (9). Step 3: Vertical coverage, the lifting component moves, driving the main pipeline (8) to rise, so that the spray area of ​​the nozzle (9) can cover all battery packs in the vertical direction; Step 4: Horizontal coverage, reciprocating motion, by driving the nozzle (9) to swing back and forth, so that the spray area of ​​the nozzle (9) covers the battery pack in the horizontal direction.

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