Cooling fire-fighting system for energy storage device and control method of cooling fire-fighting system

Abstract

The invention relates to the technical field of batteries, and particularly discloses a cooling and fire-fighting system for an energy storage device and a control method thereof.The cooling and fire-fighting system comprises a protective shell, one side of the back face of the protective shell is fixedly connected with a first sleeving frame, and one side of the back face of the second sleeving frame is in lap joint with a second sleeving frame; through arrangement of a first power connection block, a second power connection block, an electric sliding rail, a first conductive block and a first wire, during use, the electric sliding rail drives a sliding block slidably connected with the inner wall to move, the sliding block drives a first insulating ring at the bottom to move, and the first insulating ring drives the first conductive block on the inner wall to move; the first conductive block is used for electrically connecting the first power connection block and the second power connection block, and when the power supply assembly in the protective shell breaks down or is in danger, the first conductive block is moved to one side through the sliding block, so that the independent power supply assembly is disconnected with a power supply; therefore, the effect that the power supply assembly in the protective shell independently transmits the power supply and independently protects the power supply is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of batteries, and in particular relates to a cooling fire protection system for an energy storage device and a control method thereof. Background Art

[0002] At present, the installation and application of household energy storage systems have become very common. Household energy storage all-in-one machines are mainly integrated with energy storage batteries, inverters, air conditioners, fire protection and other equipment. They have the characteristics of high integration, high standardization, single-cluster battery management, plug-and-play, convenience and flexibility, and can adapt to various application scenarios. Its principle is based on electrochemical energy storage technology. The battery pack converts electrical energy into chemical energy for storage, and when needed, the chemical energy is converted into electrical energy output through the inverter for home use.

[0003] In the Chinese patent with publication number CN112038728B, a cooling fire-fighting mixing system for an energy storage device is mentioned, which includes a box body, a plurality of energy storage devices are arranged inside, and a cooling passage is arranged on the energy storage device; a cooling circulation loop includes a plurality of cooling branches connected to the cooling passage, a compressor, a condenser, a liquid storage tank and a throttle valve are connected to the cooling circulation loop in sequence, and a first switch valve for controlling the on-off of the cooling circulation loop, and a flame-retardant refrigerant is stored in the liquid storage tank; at least one spray branch is arranged in the box body, the spray branch is arranged above the energy storage device and connected to the cooling circulation loop, a plurality of nozzles are arranged on the spray branch, and a second switch valve for controlling the on-off of the spray branch; it also includes a first fire extinguishing branch connected to the cooling circulation loop, the other end of the first fire extinguishing branch is connected to a fire extinguishing agent tank, the first fire extinguishing branch is provided with a third switch valve for controlling the on-off of the first fire extinguishing branch, and a temperature sensor is arranged in the box body.

[0004] However, although the above technical solution can extinguish the fire inside the energy storage device through the three-level fire extinguishing equipment, it is difficult to achieve the actual protection effect by simply extinguishing the fire for the large number of power components and electric energy stored in the energy storage device, which makes the energy storage device have certain defects in extinguishing the fire during the fire fighting process, resulting in poor fire fighting effect of the energy storage device, so the staff needs to improve it. Summary of the invention

[0005] The object of the present invention is to provide a cooling fire fighting system for an energy storage device and a control method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A cooling fire fighting system for an energy storage device, comprising:

[0008] Protective housing;

[0009] A first sleeve frame is fixedly connected to one side of the back of the protective housing, a second sleeve frame is overlapped on one side of the back of the first sleeve frame, mounting bolts are threadedly connected to the four sides of the surface of the second sleeve frame, and the front ends of the mounting bolts are threadedly connected to the back of the first sleeve frame, a plurality of first electrical connection boxes are fixedly connected to one side of the inner wall of the first sleeve frame, and a first electrical connection block is fixedly connected to one side of the back of the first electrical connection box;

[0010] A plurality of second power connection boxes are fixedly connected to one side of the inner wall of the second socket frame, a second power connection block is fixedly connected to one side of the surface of the second power connection box, an electric slide rail is fixedly connected to one side of the top of the second power connection box, a sliding block is slidably connected to one side of the inner wall of the electric slide rail, a first insulating ring is fixedly connected to one side of the bottom of the sliding block, a first conductive block is fixedly connected to one side of the inner wall of the first insulating ring, and two sides of the first conductive block are respectively overlapped with one side of the first power connection block and one side of the second power connection block, a first wire is fixedly connected to the middle of the back side of the second power connection box, a second wire is fixedly connected to the tail end of the first wire, a protective tube is fixedly connected to the middle of the back side of the second socket frame, and the surface of the second wire is fixedly plugged into the inner wall of the protective tube.

[0011] Preferably, an electric telescopic rod is fixedly connected to one side of the inner wall of the protection tube, a second insulating ring is fixedly connected to the top of the electric telescopic rod, a second conductive block is fixedly connected to one side of the inner wall of the second insulating ring, an assembly tube is overlapped at the front end of the protection tube, fixing bolts are threadedly connected to both sides of the front end of the assembly tube, and one side of the surface of the fixing bolts is threadedly connected to the tail end of the protection tube, a third wire is fixedly connected to one side of the inner wall of the assembly tube, and two ends of the second conductive block are respectively overlapped with one end of the second wire and the third wire, a battery box is fixedly connected to the bottom of the back side of the second sleeve frame, a battery is fixedly connected to the inner wall of the battery box, and the battery is electrically connected to the electric slide rail and the electric telescopic rod.

[0012] Preferably, a battery cabinet is fixedly connected to one side of the inner wall of the protective shell, a plurality of groups of batteries are fixedly connected to the inner wall of the battery cabinet, and thermocouples are arranged on the surfaces of the batteries.

[0013] Preferably, a first storage box is fixedly connected to the other side of the inner wall of the protective shell, a first connecting tube is fixedly connected to the top of the first storage box, a plurality of groups of spray tubes are fixedly connected to the front end of the first connecting tube, and the front end of the spray tube is plugged into the inner wall of the battery cabinet, a signal switch is provided on the inner wall of the spray tube, a second storage box is fixedly connected to one side of the inner wall of the protective shell, a second connecting tube is fixedly connected to the top of the second storage box, and the front end of the second connecting tube is plugged into the top of the battery cabinet, the inner walls of the first connecting tube and the second connecting tube are both provided with solenoid valves, and one side of the top of the first storage box and the second storage box are both fixedly connected with an injection tube.

[0014] Preferably, a composite gas sensor is fixedly connected to one side of the inner top wall of the protective shell, a smoke fire detection alarm is fixedly connected to the other side of the inner top wall of the protective shell, a water inlet pipe is fixedly connected to the top of the protective shell, a water supply valve is provided on the inner wall of the water inlet pipe, a hydraulic alarm is provided on the surface of the water inlet pipe, a nozzle is fixedly connected to the bottom end of the water inlet pipe, and the surface of the nozzle is provided on the inner top wall of the protective shell.

[0015] Preferably, a collection module is fixedly connected to one side of the inner wall of the protective shell, a controller is fixedly connected to the middle of the inner wall of the protective shell, and an energy storage converter is fixedly connected to the top of the inner wall of the protective shell.

[0016] Preferably, the bottom of the protective shell surface is rotatably connected to a sealing door via a hinge, the middle of the protective shell surface is fixedly connected to a visualization screen, the top of the protective shell surface is fixedly connected to a control panel, the top of one side of the protective shell is fixedly connected to a warning light, and universal wheels are fixedly connected to the four sides of the bottom of the protective shell.

[0017] A control method for a cooling fire protection system for an energy storage device comprises the following steps:

[0018] S1. System monitoring and early warning: The gas concentration inside the protective shell is continuously monitored by the composite gas sensor, especially the concentration of harmful gases such as CO, H2, CH4, and VOC. The smoke fire detection alarm monitors the smoke situation inside the protective shell in real time. The acquisition module collects the data of the above sensors and analyzes and processes them. When the gas concentration or smoke situation exceeds the preset threshold, the acquisition module sends an early warning signal to the controller;

[0019] S2. Primary response and alarm: After receiving the warning signal, the controller immediately starts the primary response program, displays the fire warning information on the visual screen, and sends out an audible and visual alarm through the warning light and the audible and visual alarm. At the same time, the controller sends a signal to the battery management system BMS to prepare to start the fire extinguishing program;

[0020] S3, automatic fire extinguishing program starts: If the primary response fails to prevent the fire from spreading, and the thermocouple detects that the temperature of the energy storage battery in the battery cabinet rises abnormally to the set threshold, it is considered that a thermal runaway fire has occurred. The controller controls the solenoid valve in the first storage box to open according to the signal provided by the battery management system BMS, and releases the carbon dioxide fire extinguishing agent. The carbon dioxide is accurately injected into the battery pack through the first connecting pipe and the ejection pipe to achieve primary fire extinguishing;

[0021] S4, secondary fire extinguishing and power-off protection: If the primary fire extinguishing fails to completely extinguish the fire source, or the composite gas sensor and the smoke fire detection alarm continue to detect abnormal signals, the controller starts the secondary fire extinguishing program, controls the solenoid valve in the second storage box to open, and releases the dry powder fire extinguishing agent, which is sprayed through the second connecting pipe and the corresponding spraying device to cover and extinguish the remaining fire source. At the same time, the controller cuts off the power supply of the power supply component inside the protective housing through the operation of the electric slide rail and the electric telescopic rod to ensure safety during the fire extinguishing process;

[0022] S5. System reset and subsequent processing: After the fire is extinguished, the controller receives a confirmation signal from the acquisition module, indicating that the fire has been extinguished. The system enters the reset state, closes all solenoid valves, stops the operation of equipment such as the water supply valve, provides a prompt message that the fire is extinguished through the visual screen, and instructs the staff to conduct subsequent safety inspections and equipment maintenance.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) Through the arrangement of a protective shell, a first power connection box, a first power connection block, a second power connection block, an electric slide rail, a sliding block, a first insulating ring, a first conductive block and a first electric wire, when in use, the electric slide rail drives the sliding block connected to the inner wall to move, the sliding block drives the first insulating ring at the bottom to move, the first insulating ring drives the first conductive block on the inner wall to move, the first conductive block is used to electrically connect the first power connection block to the second power connection block, and when a power supply component inside the protective shell fails or is in danger, the first conductive block is moved to one side by the sliding block, so that the independent power supply component therein is disconnected from the power connection, thereby achieving the effect of independently transmitting power to the power supply component inside the protective shell and independently performing power protection, and facilitating operation by staff.

[0025] (2) Through the arrangement of the protective tube, the electric telescopic rod, the second insulating ring, the second conductive block, the assembly tube, the fixing bolt, the third electric wire and the battery box, when in use, the electric telescopic rod drives the second insulating ring at the top to adjust the height, and the inner wall of the second insulating ring is provided with a second conductive block, and the second conductive block electrically connects the second electric wire on the inner wall of the protective tube with the third electric wire in the assembly tube, and when all the power supply components inside the protective shell fail or are in danger, the second conductive block is lowered to disconnect the second electric wire from the third electric wire, and the electric slide rail and the electric telescopic rod are powered by the battery inside the independent battery box, so that when they fail, the power can also be connected through the battery, thereby achieving the effect of cutting off the power supply of the entire energy storage device when a failure or danger occurs, and providing an independent power supply.

[0026] (3) Through the setting of the first fire extinguishing branch and the second fire extinguishing branch, the combined use of carbon dioxide fire extinguishing agent and dry powder fire extinguishing agent is realized. This combination can accurately extinguish the fire source inside the energy storage device and achieve comprehensive coverage, thereby improving the efficiency and effect of fire extinguishing. The cooling of the energy storage device is also achieved through structures such as the cooling circulation loop and the spray branch. The combination of cooling and fire extinguishing not only helps to extinguish the fire, but also prevents the further expansion of the fire and protects the safety of the energy storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 One of the three-dimensional diagrams of the present invention;

[0028] Figure 2 is a three-dimensional diagram of a battery cabinet of the present invention;

[0029] Figure 3 is a three-dimensional diagram of the composite gas sensor of the present invention;

[0030] Figure 4 is a three-dimensional diagram of the signal switch of the present invention;

[0031] Figure 5 is a three-dimensional diagram of the water inlet pipe of the present invention;

[0032] Figure 6 This is the second stereogram of the present invention;

[0033] Figure 7 is a three-dimensional diagram of the first power connection block of the present invention;

[0034] Figure 8 is a three-dimensional diagram of the second conductive block of the present invention;

[0035] Fig. 9 is a three-dimensional diagram of the electric slide rail of the present invention;

[0036] In the figure: 1, protective housing; 2, first socket frame; 3, second socket frame; 4, first electrical connection box; 5, first electrical connection block; 6, second electrical connection box; 7, second electrical connection block; 8, electric slide rail; 9, sliding block; 10, first insulating ring; 11, first conductive block; 12, first wire; 13, second wire; 14, protective tube; 15, electric telescopic rod; 16, second insulating ring; 17, second conductive block; 18, assembly tube; 19, fixing bolt; 20, third wire; 21, battery box; 22, battery cabinet; 23, battery; 2 4. Thermocouple; 25. First storage box; 26. First connecting pipe; 27. Ejection pipe; 28. Signal switch; 29. ​​Second storage box; 30. Second connecting pipe; 31. Solenoid valve; 32. Injection pipe; 33. Composite gas sensor; 34. Smoke fire detection alarm; 35. Water inlet pipe; 36. Water supply valve; 37. Hydraulic alarm; 38. Sprinkler; 39. Collection module; 40. Controller; 41. Energy storage inverter; 42. Sealed door; 43. Visual screen; 44. Control panel; 45. Warning light; 46. Universal wheel. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1:

[0039] See also Figures 1 to 9 As shown, a cooling fire protection system for an energy storage device comprises:

[0040] Protective housing 1;

[0041] A first sleeve frame 2 is fixedly connected to one side of the back of the protective housing 1, a second sleeve frame 3 is overlapped to one side of the back of the first sleeve frame 2, mounting bolts are threadedly connected to the four sides of the surface of the second sleeve frame 3, and the front ends of the mounting bolts are threadedly connected to the back of the first sleeve frame 2, a plurality of first electrical connection boxes 4 are fixedly connected to one side of the inner wall of the first sleeve frame 2, and a first electrical connection block 5 is fixedly connected to one side of the back of the first electrical connection box 4;

[0042] A plurality of second electrical connection boxes 6 are fixedly connected to one side of the inner wall of the second socket frame 3, a second electrical connection block 7 is fixedly connected to one side of the surface of the second electrical connection box 6, an electric slide rail 8 is fixedly connected to one side of the top of the second electrical connection box 6, a sliding block 9 is slidably connected to one side of the inner wall of the electric slide rail 8, a first insulating ring 10 is fixedly connected to one side of the bottom of the sliding block 9, a first conductive block 11 is fixedly connected to one side of the inner wall of the first insulating ring 10, and two sides of the first conductive block 11 are respectively overlapped on one side of the first electrical connection block 5 and the second electrical connection block 7, a first electric wire 12 is fixedly connected to the middle of the back side of the second electrical connection box 6, a second electric wire 13 is fixedly connected to the tail end of the first electric wire 12, a protective tube 14 is fixedly connected to the middle of the back side of the second socket frame 3, and the surface of the second electric wire 13 is fixedly inserted into the inner wall of the protective tube 14.

[0043] When in use, a second sleeve frame 3 is arranged on the back of the protective shell 1 through the first sleeve frame 2, and a plurality of first connection boxes 4 are arranged on the inner wall of the first sleeve frame 1. The first connection box 4 transmits the electric energy in the battery inside the protective shell 1, and a first connection block 5 is arranged on the back of the first connection box 4, and a second connection box 6 is arranged on the inner wall of the second sleeve frame 3. A second connection block 7 is arranged on the surface of the second connection box 6, and an electric slide rail 8 is arranged on the top of the second connection box 6. The staff connects the electric slide rail 8 to the power supply, and the electric slide rail 8 drives the sliding connection of the inner wall sliding The block 9 moves, the sliding block 9 drives the first insulating ring 10 at the bottom to move, the first insulating ring 10 drives the first conductive block 11 on the inner wall to move, the first conductive block 11 is used to electrically connect the first power connection block 5 with the second power connection block 7, and when a power supply component inside the protective housing 1 fails or is in danger, the first conductive block 11 is moved to one side by the sliding block 9, so that the independent power supply component is disconnected from the power supply, and a first wire 12 is arranged on the back of the second power connection box 6, and a plurality of first wires 12 are connected to form a second wire 13, and the second wire 13 is used to transmit electrical energy.

[0044] Embodiment 2:

[0045] See also Figures 1 to 9 As shown, an electric telescopic rod 15 is fixedly connected to one side of the inner wall of the protective tube 14, a second insulating ring 16 is fixedly connected to the top of the electric telescopic rod 15, a second conductive block 17 is fixedly connected to one side of the inner wall of the second insulating ring 16, an assembly tube 18 is overlapped at the front end of the protective tube 14, fixing bolts 19 are threadedly connected to both sides of the front end of the assembly tube 18, and one side of the surface of the fixing bolt 19 is threadedly connected to the tail end of the protective tube 14, a third electric wire 20 is fixedly connected to one side of the inner wall of the assembly tube 18, and two ends of the second conductive block 17 are respectively overlapped to one end of the second electric wire 13 and the third electric wire 20, a battery box 21 is fixedly connected to the bottom of the back side of the second socket frame 3, a battery is fixedly connected to the inner wall of the battery box 21, and the battery is electrically connected to the electric slide rail 8 and the electric telescopic rod 15.

[0046] When in use, an electric telescopic rod 15 is provided on the inner wall of the protective tube 14. The staff connects the electric telescopic rod 15 to the power supply, and the electric telescopic rod 15 drives the second insulating ring 16 at the top to adjust the height. The inner wall of the second insulating ring 16 is provided with a second conductive block 17. The second conductive block 17 electrically connects the second wire 13 on the inner wall of the protective tube 14 with the third wire 20 in the assembly tube 18. When all the power supply components inside the protective shell 1 fail or are in danger, the second conductive block 17 is lowered to disconnect the second wire 13 from the third wire 20. The electric slide rail 8 and the electric telescopic rod 15 are powered by the battery inside the independent battery box 21. Therefore, when they fail, they can also be powered by the battery.

[0047] Embodiment three:

[0048] See also Figures 1 to 9 As shown, a battery cabinet 22 is fixedly connected to one side of the inner wall of the protective shell 1, and a plurality of groups of batteries 23 are fixedly connected to the inner wall of the battery cabinet 22, and a thermocouple 24 is arranged on the surface of the battery 23; a first storage box 25 is fixedly connected to the other side of the inner wall of the protective shell 1, and a first connecting pipe 26 is fixedly connected to the top of the first storage box 25, and a plurality of groups of spray pipes 27 are fixedly connected to the front end of the first connecting pipe 26, and the front end of the spray pipe 27 is plugged into the inner wall of the battery cabinet 22, and a signal switch 28 is arranged on the inner wall of the spray pipe 27; a second storage box 29 is fixedly connected to one side of the inner wall of the protective shell 1, and a second connecting pipe 30 is fixedly connected to the top of the second storage box 29, and the front end of the second connecting pipe 30 is plugged into the top of the battery cabinet 22, and the inner walls of the first connecting pipe 26 and the second connecting pipe 30 are both provided with solenoid valves 31, and one side of the top of the first storage box 25 and the second storage box 29 are both fixedly connected to the injection pipe 32, and one side of the inner top wall of the protective shell 1 is fixedly connected to There is a composite gas sensor 33, a smoke fire detection alarm 34 is fixedly connected to the other side of the inner top wall of the protective shell 1, a water inlet pipe 35 is fixedly connected to the top of the protective shell 1, a water supply valve 36 is arranged on the inner wall of the water inlet pipe 35, a hydraulic alarm 37 is arranged on the surface of the water inlet pipe 35, a nozzle 38 is fixedly connected to the bottom end of the water inlet pipe 35, and the surface of the nozzle 38 is arranged on the inner top wall of the protective shell 1, a collection module 39 is fixedly connected to one side of the inner wall of the protective shell 1, a controller 40 is fixedly connected to the middle part of the inner wall of the protective shell 1, an energy storage converter 41 is fixedly connected to the top of the inner wall of the protective shell 1, a sealing door 42 is rotatably connected to the bottom of the surface of the protective shell 1 through a hinge, a visualization screen 43 is fixedly connected to the middle part of the surface of the protective shell 1, a control panel 44 is fixedly connected to the top of the surface of the protective shell 1, a warning light 45 is fixedly connected to the top of one side of the protective shell 1, and universal wheels 46 are fixedly connected to the four sides of the bottom of the protective shell 1.

[0049] The fire protection system and the battery cabinet 22 are separated by a design. The battery cabinet 22 adopts a middle partition design to separate the energy storage battery from other data acquisition and monitoring equipment. Both sides are relatively closed and insulated spaces. When a thermal runaway fire occurs in the energy storage battery 23, the energy storage inverter 41, the controller 40 and the acquisition module 39 are effectively protected.

[0050] The first-level automatic alarm and automatic fire extinguishing system design: the first storage box 25, the first connecting pipe 26, the ejection pipe 27, the second storage box 29, the second connecting pipe 30 and the solenoid valve 31 are all automatic fire extinguishing components. Furthermore, when the energy storage battery 23 in the battery cabinet 22 has a thermal runaway fire, the thermocouple 24 in the energy storage battery 23 pack detects the temperature abnormality and transmits the temperature signal to the acquisition module 39. The acquisition module 39 is connected to the fire monitoring module and the fire alarm module. After receiving the temperature signal, the acquisition module 39 transmits the signal to the battery management system (BMS). The battery management system (BMS) controls the first storage box 25 to release carbon dioxide and injects carbon dioxide into the battery pack through the first connecting pipe 26 to achieve precise fire extinguishing. When the battery management system (BMS) receives the action signal, the fire alarm module (visual screen, sound and light alarm) issues a first-level fire alarm, prompting the surrounding personnel to evacuate, and starts the energy storage cabinet and the external automatic power-off protection.

[0051] The second-level automatic alarm and automatic fire extinguishing system design: When the first storage box 25 releases the component, if the composite gas sensor 33 (CO, H2, CH4, VOC) detects abnormal gas concentration, or the smoke fire detection alarm 34 detects abnormal smoke in the space, the composite gas sensor 33 or the smoke fire detection alarm 34 can transmit the abnormal signal to the acquisition module 39. After receiving the abnormal signal, the acquisition module 39 transmits the signal to the battery management system (BMS). The battery management system (BMS) controls the second storage box to release the dry powder fire extinguishing agent, and injects the dry powder fire extinguishing agent into the energy storage cabinet space, effectively reducing the oxygen concentration in the space and achieving full coverage. When the battery management system (BMS) receives the action signal, the fire alarm module (visual screen 43, sound and light alarm) issues a second-level fire alarm, prompting surrounding personnel to evacuate, and starts the energy storage cabinet and external automatic power-off protection.

[0052] The third-level automatic opening and closing water sprinkler fire extinguishing device automatically repeats opening and closing for fire extinguishing multiple times. The automatic opening and closing water sprinkler fire extinguishing device is connected to the household water pipeline and does not require a water pump for pressurization. The key to the automatic opening and closing water sprinkler fire extinguishing device is that the device does not need to rely on external power control. The switch of the device is a temperature-sensitive metal. When the internal temperature is too high, the temperature-sensitive metal is heated and heated. When the temperature of the temperature-sensitive metal exceeds 80°C, the temperature-sensitive metal expands, the switch opens, and the water spray is automatically released; after the temperature in the cabin drops, the temperature-sensitive metal contracts, the switch closes, and the release of water spray stops. The above action process can be repeated according to the temperature change in the cabin. When the device is in action, the hydraulic alarm 37 simultaneously releases an alarm signal to prompt the surrounding personnel to evacuate.

[0053] The visualization screen 43 displays the battery status information in real time, including voltage, temperature, current and external power transmission status. The visualization screen 43 is connected to the battery management system, the energy storage inverter 41, and the acquisition module 39, and is equipped with a voice broadcasting device, which can broadcast the alarm signal in real time. At the same time, the visualization screen 43 can also display the remaining amount of fire extinguishing agent 1 and fire extinguishing agent 2 in the storage bottle.

[0054] Embodiment 4:

[0055] See also Figures 1 to 9 As shown, a control method for a cooling fire protection system for an energy storage device comprises the following steps:

[0056] S1. System monitoring and early warning: The gas concentration inside the protective housing 1 is continuously monitored by the composite gas sensor 33, especially the concentration of harmful gases such as CO, H2, CH4, and VOC. The smoke fire detection alarm 34 monitors the smoke situation inside the protective housing 1 in real time. The acquisition module 39 collects the data of the above sensors and performs analysis and processing. When the gas concentration or smoke situation exceeds the preset threshold, the acquisition module 39 sends an early warning signal to the controller 40;

[0057] S2, primary response and alarm: after receiving the warning signal, the controller 40 immediately starts the primary response program, displays the fire warning information through the visual screen 43, and sends out an audible and visual alarm through the warning light 45 and the audible and visual alarm. At the same time, the controller 40 sends a signal to the battery management system BMS to prepare to start the fire extinguishing program;

[0058] S3, automatic fire extinguishing program starts: If the primary response fails to prevent the fire from spreading, and the thermocouple 24 detects that the temperature of the energy storage battery 23 in the battery cabinet 22 abnormally rises to the set threshold, it is considered that a thermal runaway fire has occurred. The controller 40 controls the solenoid valve 31 in the first storage box 25 to open according to the signal provided by the battery management system BMS, and releases the carbon dioxide fire extinguishing agent. The carbon dioxide is accurately injected into the battery pack through the first connecting pipe 26 and the ejection pipe 27 to achieve primary fire extinguishing;

[0059] S4, secondary fire extinguishing and power-off protection: If the primary fire extinguishing fails to completely extinguish the fire source, or the composite gas sensor 33 and the smoke fire detection alarm 34 continue to detect abnormal signals, the controller 40 starts the secondary fire extinguishing program, controls the solenoid valve 31 in the second storage box 29 to open, releases the dry powder fire extinguishing agent, and the dry powder fire extinguishing agent is sprayed through the second connecting pipe 30 and the corresponding spraying device to cover and extinguish the remaining fire source. At the same time, the controller 40 cuts off the power supply of the power supply component inside the protective housing 1 through the operation of the electric slide rail 8 and the electric telescopic rod 15 to ensure safety during the fire extinguishing process;

[0060] S5, system reset and subsequent processing: After the fire is extinguished, the controller 40 receives a confirmation signal from the acquisition module 39, indicating that the fire has been extinguished, and the system enters a reset state, closes all solenoid valves 31, stops the operation of the water supply valve 36 and other equipment, provides a prompt message indicating that the fire is extinguished through the visual screen 43, and instructs the staff to conduct subsequent safety inspections and equipment maintenance.

[0061] Embodiment five:

[0062] See also Figures 1 to 9 As shown, when the energy storage device is cooled and protected from fire, the combination of carbon dioxide fire extinguishing agent and dry powder fire extinguishing agent is used to achieve accurate extinguishing and comprehensive coverage of the fire source inside the energy storage device. The coordinated work of the acquisition module 39, the controller 40 and the battery management system realizes real-time monitoring and intelligent control of the system status. The electric slide rail 8 and the electric telescopic rod 15 are powered by an independent battery box 21, ensuring the reliability of power cut-off in an emergency. The visual screen 43, the warning light 45 and the control panel 44 provide an intuitive user interaction interface, which is convenient for users to understand the system status and alarm information in real time.

[0063] Working principle: When in use, the staff connects the electric slide rail 8 to the power supply, and the electric slide rail 8 drives the sliding block 9 connected to the inner wall to move, and the sliding block 9 drives the first insulating ring 10 at the bottom to move, and the first insulating ring 10 drives the first conductive block 11 of the inner wall to move, and the first conductive block 11 is used to electrically connect the first power connection block 5 with the second power connection block 7, and when the power supply component inside the protective housing 1 fails or is dangerous, the first conductive block 11 is moved to one side through the sliding block 9, so that the independent power supply component is disconnected from the power supply, and the staff connects the electric telescopic rod 15 to the power supply, and the electric telescopic rod 15 drives the second insulating ring 16 at the top to adjust the height. The inner wall of the second insulating ring 16 is provided with a second conductive block 17. The second conductive block 17 electrically connects the second wire 13 on the inner wall of the protective tube 14 with the third wire 20 in the assembly tube 18. When all the power supply components inside the protective housing 1 fail or are in danger, the second conductive block 17 is lowered to disconnect the second wire 13 from the third wire 20. The electric slide rail 8 and the electric telescopic rod 15 are powered by the battery inside the independent battery box 21. Therefore, when they fail, they can also be powered by the battery.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling fire protection system for an energy storage device, characterized in that: include: Protective housing (1); A first sleeve frame (2) is fixedly connected to one side of the back of the protective housing (1), a second sleeve frame (3) is overlapped to one side of the back of the first sleeve frame (2), mounting bolts are threadedly connected to the four sides of the surface of the second sleeve frame (3), and the front ends of the mounting bolts are threadedly connected to the back of the first sleeve frame (2), a plurality of first electrical connection boxes (4) are fixedly connected to one side of the inner wall of the first sleeve frame (2), and a first electrical connection block (5) is fixedly connected to one side of the back of the first electrical connection box (4); A plurality of second electrical connection boxes (6) are fixedly connected to one side of the inner wall of the second socket frame (3); a second electrical connection block (7) is fixedly connected to one side of the surface of the second electrical connection box (6); an electric slide rail (8) is fixedly connected to one side of the top of the second electrical connection box (6); a sliding block (9) is slidably connected to one side of the inner wall of the electric slide rail (8); a first insulating ring (10) is fixedly connected to one side of the bottom of the sliding block (9); a first conductive block (11) is fixedly connected to one side of the inner wall of the first insulating ring (10); and two sides of the first conductive block (11) are respectively overlapped with one side of the first electrical connection block (5) and one side of the second electrical connection block (7); a first electric wire (12) is fixedly connected to the middle of the back of the second electrical connection box (6); a second electric wire (13) is fixedly connected to the tail end of the first electric wire (12); a protective tube (14) is fixedly connected to the middle of the back of the second socket frame (3); and the surface of the second electric wire (13) is fixedly plugged into the inner wall of the protective tube (14).

2. A cooling fire protection system for an energy storage device according to claim 1, characterized in that: An electric telescopic rod (15) is fixedly connected to one side of the inner wall of the protection tube (14), a second insulating ring (16) is fixedly connected to the top of the electric telescopic rod (15), a second conductive block (17) is fixedly connected to one side of the inner wall of the second insulating ring (16), an assembly tube (18) is overlapped at the front end of the protection tube (14), fixing bolts (19) are threadedly connected to both sides of the front end of the assembly tube (18), and one side of the surface of the fixing bolt (19) is threadedly connected to the rear end of the protection tube (14), a third electric wire (20) is fixedly connected to one side of the inner wall of the assembly tube (18), and two ends of the second conductive block (17) are respectively overlapped to one end of the second electric wire (13) and one end of the third electric wire (20), a battery box (21) is fixedly connected to the bottom of the back of the second sleeve frame (3), a battery is fixedly connected to the inner wall of the battery box (21), and the battery is electrically connected to the electric slide rail (8) and the electric telescopic rod (15).

3. A cooling fire fighting system for an energy storage device according to claim 1, characterized in that: A battery cabinet (22) is fixedly connected to one side of the inner wall of the protective housing (1), a plurality of groups of batteries (23) are fixedly connected to the inner wall of the battery cabinet (22), and a thermocouple (24) is provided on the surface of the battery (23).

4. A cooling fire protection system for an energy storage device according to claim 1, characterized in that: A first storage box (25) is fixedly connected to the other side of the inner wall of the protective shell (1), a first connecting pipe (26) is fixedly connected to the top of the first storage box (25), a plurality of groups of spray pipes (27) are fixedly connected to the front end of the first connecting pipe (26), and the front end of the spray pipe (27) is plugged into the inner wall of the battery cabinet (22), and a signal switch (28) is provided on the inner wall of the spray pipe (27), a second storage box (29) is fixedly connected to one side of the inner wall of the protective shell (1), a second connecting pipe (30) is fixedly connected to the top of the second storage box (29), and the front end of the second connecting pipe (30) is plugged into the top of the battery cabinet (22), the inner walls of the first connecting pipe (26) and the second connecting pipe (30) are both provided with solenoid valves (31), and one side of the top of the first storage box (25) and the second storage box (29) is fixedly connected to an injection pipe (32).

5. A cooling fire protection system for an energy storage device according to claim 1, characterized in that: A composite gas sensor (33) is fixedly connected to one side of the inner top wall of the protective shell (1), a smoke fire detection alarm (34) is fixedly connected to the other side of the inner top wall of the protective shell (1), a water inlet pipe (35) is fixedly connected to the top of the protective shell (1), a water supply valve (36) is arranged on the inner wall of the water inlet pipe (35), a hydraulic alarm (37) is arranged on the surface of the water inlet pipe (35), a nozzle (38) is fixedly connected to the bottom end of the water inlet pipe (35), and the surface of the nozzle (38) is arranged on the inner top wall of the protective shell (1).

6. A cooling fire fighting system for an energy storage device according to claim 1, characterized in that: A collection module (39) is fixedly connected to one side of the inner wall of the protective shell (1), a controller (40) is fixedly connected to the middle of the inner wall of the protective shell (1), and an energy storage converter (41) is fixedly connected to the top of the inner wall of the protective shell (1).

7. A cooling fire fighting system for an energy storage device according to claim 1, characterized in that: The bottom of the surface of the protective shell (1) is rotatably connected to a sealing door (42) via a hinge, the middle of the surface of the protective shell (1) is fixedly connected to a visual screen (43), the top of the surface of the protective shell (1) is fixedly connected to a control panel (44), the top of one side of the protective shell (1) is fixedly connected to a warning light (45), and universal wheels (46) are fixedly connected to the four sides of the bottom of the protective shell (1).

8. A control method for a cooling fire fighting system for an energy storage device, applicable to a cooling fire fighting system for an energy storage device according to claims 1 to 7, characterized in that: The following steps are involved: S1. System monitoring and early warning: The gas concentration inside the protective housing (1), especially the concentration of harmful gases such as CO, H2, CH4 and VOC, is continuously monitored by the composite gas sensor (33). The smoke fire detection alarm (34) monitors the smoke situation inside the protective housing (1) in real time. The acquisition module (39) collects data from the above sensors and performs analysis and processing. When the gas concentration or smoke situation exceeds a preset threshold, the acquisition module (39) sends an early warning signal to the controller (40); S2, primary response and alarm: after receiving the warning signal, the controller (40) immediately starts the primary response program, displays the fire warning information through the visual screen (43), and sends out an audible and visual alarm through the warning light (45) and the audible and visual alarm. At the same time, the controller (40) sends a signal to the battery management system (BMS) to prepare to start the fire extinguishing program; S3, automatic fire extinguishing program starts: If the primary response fails to prevent the spread of the fire, and the thermocouple (24) detects that the temperature of the energy storage battery (23) in the battery cabinet (22) abnormally rises to a set threshold, it is considered that a thermal runaway fire has occurred. The controller (40) controls the solenoid valve (31) in the first storage box (25) to open according to the signal provided by the battery management system (BMS), and releases the carbon dioxide fire extinguishing agent. The carbon dioxide is accurately injected into the battery pack through the first connecting pipe (26) and the ejection pipe (27), thereby achieving primary fire extinguishing; S4, secondary fire extinguishing and power-off protection: If the primary fire extinguishing fails to completely extinguish the fire source, or the composite gas sensor (33) and the smoke fire detection alarm (34) continue to detect abnormal signals, the controller (40) starts the secondary fire extinguishing program, controls the solenoid valve (31) in the second storage box (29) to open, releases the dry powder fire extinguishing agent, and the dry powder fire extinguishing agent is sprayed through the second connecting pipe (30) and the corresponding spraying device to cover and extinguish the remaining fire source. At the same time, the controller (40) cuts off the power supply of the power supply component inside the protective housing (1) through the operation of the electric slide rail (8) and the electric telescopic rod (15) to ensure safety during the fire extinguishing process; S5, system reset and subsequent processing: After the fire is extinguished, the controller (40) receives a confirmation signal from the acquisition module (39), indicating that the fire has been extinguished, and the system enters a reset state, closes all electromagnetic valves (31), stops the operation of the water supply valve (36) and other equipment, provides a prompt message indicating that the fire is extinguished through the visual screen (43), and instructs the staff to carry out subsequent safety inspections and equipment maintenance.

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