Cascade cabin fire-fighting energy storage system and control method

Abstract

The invention discloses an echelon cabin fire-fighting energy storage system and a control method. The device comprises a battery cabin and a control cabin, the battery cabin is internally provided with a plurality of echelon battery whole packs, a plurality of temperature detection devices, a plurality of jacking and puncturing structures and a first fire fighting pipeline, the jacking and puncturing structures are in contact with the surfaces of the echelon battery whole packs, and when a fire fighting control system controls the jacking and puncturing structures to puncture shells of the echelon battery whole packs, the first fire fighting pipeline is started. The first fire-fighting pipeline is communicated with the interior of the whole echelon battery pack; a fire-fighting device, a fire-fighting control system and a battery control system are arranged in the control cabin; the fire-fighting control system is used for judging whether to control the fire-fighting device to start for fire fighting or not according to the temperature of the whole echelon battery pack; and the battery control system is used for controlling the whole pack of the plurality of echelon batteries to work. The fire-fighting equipment, the jacking puncture structure, the fire-fighting control system and other equipment are arranged in the echelon battery energy storage system, thermal runaway of the battery can be effectively prevented through cooperation of all the equipment, and fire disasters are controlled.

Description

Technical Field

[0001] The present invention belongs to the field of energy technology, and in particular relates to a fire-fighting energy storage system for a cabin and a control method thereof. Background Art

[0002] The existing industrial and commercial energy storage fire protection systems all consider battery clusters composed of new cells. Fire detection and monitoring at the battery cluster level are generally achieved by detectors inside the battery cluster. At the same time, fire protection at the battery cluster level can also quickly respond to a single battery cluster, with timely monitoring and good fire protection correspondence, and obvious effects. However, the above scheme is only suitable for battery clusters composed of new cells, and there are the following difficulties for the whole pack of power batteries used in cascades:

[0003] Difficulty 1: The battery pack will not be disassembled during the recycling of the entire power battery pack, and a detector cannot be built into the battery pack.

[0004] Difficulty 2: When the entire power battery pack is recycled and thermally runaway, it is impossible to spray the fire extinguishing agent into the IP67 sealed package to achieve the purpose of targeted spraying.

[0005] Difficulty 3: The national standard for power batteries is strict. Thermal runaway occurs within 5 minutes, there is no open flame, and there is little smoke. Effective point spraying cannot be carried out. After 5 minutes, thermal runaway may be out of control. Summary of the invention

[0006] The purpose of the present invention is to solve the deficiencies of the above-mentioned background technology and to provide a fire-fighting energy storage system and a control method for a cabin.

[0007] The technical solution adopted by the present invention is: a fire-fighting energy storage system and control method for a ladder cabin, including a battery cabin and a control cabin,

[0008] The battery compartment is provided with a plurality of battery packs, a plurality of temperature detection devices, a plurality of jacking and puncturing structures and a first fire-fighting pipe, wherein the plurality of temperature detection devices respectively detect the temperatures of the plurality of battery packs, the jacking and puncturing structures are in contact with the surface of the battery packs, the jacking and puncturing structures control end is connected with the control end of the fire-fighting control system, and when the fire-fighting control system controls the jacking and puncturing structures to puncture the outer shell of the battery packs, the first fire-fighting pipe is connected with the inside of the battery packs;

[0009] The control cabin is equipped with fire-fighting equipment, a fire-fighting control system and a battery control system. The fire-fighting equipment is connected to the first fire-fighting pipe through a second fire-fighting pipe. The fire-fighting control system is used to determine whether to control the fire-fighting equipment to start for fire-fighting according to the temperature of the whole pack of used batteries; the battery control system is used to control the operation of several whole packs of used batteries.

[0010] Furthermore, the fire-fighting equipment includes a first device, a second device and a third device, and a first valve, a second valve and a third valve are respectively provided on the second fire-fighting pipe connected to the first device, the second device and the third device, and the control end of the fire-fighting control system is respectively connected to the control ends of the first valve, the second valve and the third valve.

[0011] Furthermore, the lifting and puncturing mechanism includes a connecting pipe, a driving device and a puncturing tube, one end of the connecting pipe is in contact with the outer shell of the whole battery pack, the connecting pipe is connected to a first fire-fighting pipe, one end of the puncturing tube passes through the connecting pipe and the other end is located inside the connecting pipe, and the other end of the puncturing tube is connected to the driving device. When the driving device is working, the puncturing tube is driven to move forward in the connecting pipe to puncture the outer shell of the whole battery pack, and the first fire-fighting pipe is connected to the inside of the whole battery pack through the connecting pipe.

[0012] Furthermore, a plurality of partitions are provided in the battery compartment, and the plurality of secondary battery packs are respectively arranged in the plurality of partitions.

[0013] Furthermore, a battery tray is provided in the compartment, the whole package of second-life batteries is placed on the battery tray, and a fireproof and heat-insulating coating is provided on the bottom of the tray.

[0014] A control method for the fire-fighting energy storage system for a ladder cabin as described above detects the temperature of the entire ladder battery pack in real time.

[0015] When the temperature of the whole pack of used batteries meets the first set condition, the lifting and piercing structure is controlled to pierce the outer shell of the whole pack of used batteries; at the same time, the fire fighting equipment is controlled to start to carry out the first level fire fighting;

[0016] After the first level firefighting is over, if the temperature of the entire battery pack continues to rise after the second set time and the rising rate is greater than the second set rate, the firefighting equipment is controlled to start the second level firefighting;

[0017] After the second-level firefighting is over, if the temperature of the entire battery pack continues to rise after the third set time and the rising rate is greater than the third set rate, the fire-fighting equipment is controlled to start the third-level firefighting.

[0018] Furthermore, the first set condition includes: the temperature of the whole pack of used batteries is greater than the set temperature, the rate of increase of the temperature of the whole pack of used batteries is greater than a first set rate, and the duration is greater than a first set time.

[0019] Furthermore, the first-level fire protection is to control the first valve of the fire-fighting equipment to be open, keep the second valve and the third valve closed, and the first equipment sprays the fire extinguishing agent through the second fire-fighting pipeline and the first fire-fighting pipeline to reach the entire battery pack for fire extinguishing and cooling.

[0020] Furthermore, the secondary fire protection is to control the second valve of the fire protection equipment to open, keep the first valve and the third valve closed, and the second equipment sprays the fire protection liquid through the second fire protection pipe and the first fire protection pipe to reach the entire battery pack for fire extinguishing and cooling.

[0021] Furthermore, the third-level fire protection is to control the third valve of the fire protection equipment to open, keep the first valve and the second valve closed, and the third equipment sprays fire water through the second fire protection pipe and the first fire protection pipe to reach the entire battery pack for fire extinguishing and cooling.

[0022] The beneficial effects of the present invention are:

[0023] The present invention arranges fire-fighting equipment, a lifting and puncturing structure, a fire-fighting control system and other equipment in the secondary battery energy storage system. Through the cooperation of various equipment, thermal runaway of the battery can be effectively prevented, thereby improving safety.

[0024] The present invention arranges a lifting and puncturing mechanism on the surface of each whole battery pack. When the corresponding single battery pack has thermal runaway, the lifting mechanism will be activated, and the carbide steel pipe will be ejected by the hydraulic cylinder to puncture the battery cover. The inner pipe of the steel pipe will spray perfluorohexanone into the battery pack, so as to achieve the fire extinguishing at the battery pack cluster level. Since the battery pack is destroyed by the lifting mechanism only after thermal runaway occurs, it does not need to be destroyed during use, and other uses of the battery pack are not affected.

[0025] The fire-fighting equipment of the present invention includes multiple fire-fighting devices, and three-level fire-fighting is designed through the multiple fire-fighting equipment. Different levels of fire-fighting are adopted in different situations, which avoids the spread of thermal runaway and reduces the property loss caused by thermal runaway.

[0026] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the principle of the energy storage system equipment layout (fire control) of the present invention.

[0028] Figure 2 It is a schematic diagram of the lifting and piercing mechanism of the present invention.

[0029] Figure 3 A schematic diagram of the principle of the energy storage system equipment layout (battery control) of the present invention.

[0030] Figure 4 It is a flow diagram of energy and information of the energy storage system of the present invention. DETAILED DESCRIPTION

[0031] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] like Figure 1 As shown, the present invention provides a fire-fighting energy storage system for a cabin, including a battery cabin and a control cabin.

[0033] The battery compartment is provided with a plurality of battery packs, a plurality of temperature detection devices, a plurality of lifting and puncturing structures and a first fire-fighting pipe, wherein the plurality of temperature detection devices respectively detect the temperatures of the plurality of battery packs, the lifting and puncturing structures are in contact with the outer shells of the battery packs, and the control end of the lifting and puncturing structures is connected with the control end of the fire-fighting control system, and when the fire-fighting control system controls the lifting and puncturing structures to puncture the outer shells of the battery packs, the first fire-fighting pipe is connected with the inside of the corresponding battery packs;

[0034] The control cabin is equipped with fire-fighting equipment, a fire-fighting control system and a battery control system. The fire-fighting equipment is connected to the first fire-fighting pipe through a second fire-fighting pipe. The fire-fighting control system is used to determine whether to control the fire-fighting equipment to start for fire-fighting according to the temperature of the whole pack of used batteries. The specific fire-fighting process is described in the control method below; the battery control system is used to control the operation of several whole packs of used batteries.

[0035] The present invention arranges fire-fighting equipment, a lifting and puncturing structure, a fire-fighting control system and other equipment in the secondary battery energy storage system. At the same time, a fireproof and heat-insulating coating is provided on the surface of the entire secondary battery package. Through the cooperation of various equipment, thermal runaway of the battery can be effectively prevented, thereby improving safety.

[0036] It should be noted that the temperature detection device is a temperature sensor, which is installed in conjunction with the secondary battery pack. In order to ensure the safety of the system and facilitate inspection and maintenance, two compartments are set in the control cabin, the fire-fighting equipment and fire-fighting control system are set in one of the compartments, and the battery control system is set in the other compartment. The above-mentioned control cabin 3 and battery cabin 2 are integrated in a container 1, and the container 1 is arranged on the ground 19. To facilitate the structural layout, a number of compartments are provided in the battery cabin 2, and the several compartments are stacked up and down, and the several secondary battery packs 4 are respectively arranged in several compartments. A battery tray 22 is arranged in the compartment, and the secondary battery pack is placed on the battery tray 22. A fireproof and heat-insulating coating is provided at the bottom of the battery tray (i.e., the surface in contact with the secondary battery pack). The material is a silica aerogel adhesive, and the temperature resistance can reach above 1000°C. Its function is to block the heat conduction of the upper and lower layers of batteries, resulting in heat spread of the upper and lower layers of batteries.

[0037] It can be understood that the fire-fighting equipment includes a first device 11, a second device 12 and a third device 13, and the second fire-fighting pipe 6 connected to the first device 10, the second device 11 and the third device 12 is respectively provided with a first valve 7, a second valve 8 and a third valve 9, and the control end of the fire-fighting control system 10 is respectively connected to the control ends of the first valve 7, the second valve 8 and the third valve 9.

[0038] It should be noted that the first device 11 is a storage tank storing a fire extinguishing agent, and the fire extinguishing agent is heptafluoropropane; the second device 12 is a storage tank storing a fire fighting fluid, and the fire fighting fluid is a mixed solution of water and ethylene glycol; the third device 13 is a fire fighting tank connected to an external fire hydrant 14 through an external fire fighting pipe 18.

[0039] In the above scheme, if Figure 2 As shown, the lifting and puncturing mechanism includes a connecting pipe 17, a driving device 16 and a puncturing tube 15. The puncturing tube 15 is a hard alloy steel pipe. The driving device 16 selects a hydraulic driving device, which is composed of a hydraulic pump, a hydraulic cylinder, a control valve and auxiliary equipment. One end of the connecting pipe 17 is in contact with the outer shell of the cascade battery pack 4, and the connecting pipe 17 is connected to the first fire-fighting pipe 5. One end of the puncturing tube 15 passes through the connecting pipe 17 and the other end is located inside the connecting pipe. The other end of the puncturing tube 15 is connected to the driving device 16. When the driving device 16 is working, the puncturing tube 15 is driven to advance a distance in the connecting pipe 17 to puncture the outer shell of the cascade battery pack 4. The first fire-fighting pipe 5 is connected to the inside of the cascade battery pack 4 through the connecting pipe 17. The present invention arranges a lifting and puncturing mechanism on the surface of each whole battery pack. When the corresponding single battery pack has thermal runaway, the lifting mechanism will be activated, and the carbide steel pipe will be ejected from the cylinder to puncture the battery cover. The inner pipe of the steel pipe will spray perfluorohexanone into the battery pack, thereby achieving the fire extinguishing at the battery pack cluster level. Since the battery pack is destroyed only after thermal runaway occurs, it does not need to be destroyed during use, and other uses of the battery pack are not affected.

[0040] It is understandable that if Figure 3 , Figure 4As shown, the battery control system includes an energy management unit (EMS), an energy storage converter (PCS) and several DC / DC modules. The cascade battery package 4 includes a power battery and a battery management unit (BMS). Several power batteries are respectively connected to several DC / DC modules, and several DC / DC modules are connected to the energy storage converter through a DC bus; the power battery is connected to the power grid and the load through the DC / DC module and the energy storage converter, and the power battery supplies power to the load through the DC / DC module and the energy storage converter in turn, and the power grid charges the power battery through the energy storage converter and the DC / DC module in turn; the battery management unit (EMS) obtains the parameter information of the power battery and sends it to the energy management unit (BMS), and the energy management unit obtains the parameter information of the power battery, the working parameters of the energy storage converter, and the working parameters of the DC / DC module, and performs energy management on the power battery according to the obtained parameters.

[0041] The present invention utilizes the battery control system so that the energy storage system can utilize the whole package of second-life batteries to operate the energy storage cabinet, and is compatible with different models and specifications, including inconsistent voltages, signals and protocols, thereby greatly saving labor costs and disassembly costs.

[0042] It should be noted that the present invention utilizes the original vehicle chassis battery as a whole pack of second-life batteries. The chassis battery is a lithium iron phosphate battery system with a single pack capacity of 43.2kWh, which can be used as a whole pack. Various battery managements are performed through the existing BMS built into the second-life battery whole pack, including status monitoring, protection, balancing, charging, communication and data management of the power battery. At the same time, in order to ensure the consistency of signals and protocols with the EMS, each second-life battery whole pack is configured with a data conversion module. The data conversion module selects the vehicle chassis conversion protocol (PMS) to realize data conversion and interface between the battery management unit and the DC / DC module and the energy management unit. All PMS are connected to the EMS for unified management to achieve fine control of single cells.

[0043] It can be understood that the energy topology of the above energy storage system is implemented using a two-stage structure topology of a DC / DC module and an energy storage converter PCS (DC / AC).

[0044] The voltage range of the above power battery is 250V-365V, and the rated voltage is 320V. It is boosted to 640V by the DC / DC module to meet the PCS input voltage range. The DC / AC module of the PCS outputs 380V, 50HZ AC power that meets the grid access to achieve the discharge function. The DC / DC module can receive an input voltage of 100V-800V, which is compatible with most of the currently retired battery modules, and has a wide range of compatibility.

[0045] At the same time, the above PCS and DC / DC modules are both bidirectional modules. When the power battery needs to be charged, the PCS converts the 380V AC power of the power grid into 640V DC power, which is then converted by the DC / DC module into the 365V DC power required by the power battery to charge the power battery. The output voltage range of the DC / DC module is 100-800V, which is compatible with the charging needs of most of the currently retired battery modules and has a wide range of compatibility.

[0046] It can be understood that the topology of the present invention uses the chassis battery of a new energy vehicle as a whole pack of secondary batteries, and the whole pack of secondary batteries is provided with a high voltage interface 20, a voltage interface 21 and a CAN interface (not shown in the figure). In the form of not disassembling, the high and low voltages are transmitted to the DC / DC module and PMS through the connector through the high and low voltage interfaces respectively; at the same time, the 12V power supply is provided to the BMS through the power module. Since the original battery high and low voltage interfaces and the BMS management system are used, unpacking is not required, which reduces the cost of secondary utilization of power batteries.

[0047] It should be noted that the above EMS realizes the protection, monitoring and control within the energy storage power supply system, accesses the user's online monitoring, and receives the battery management system BMS information to realize the charging, discharging and load control functions within the energy storage system. The present invention transmits each CAN signal of the power battery to the corresponding PMS through the CAN interface, and the PMS converts it into a 485 signal to communicate with the EMS, realizing the output and input of the signal, and meeting the requirements of monitoring and control.

[0048] The present invention also provides a control method for the above-mentioned compartment fire protection energy storage system, the process is:

[0049] The temperature detection equipment detects the temperature of the entire battery pack in real time and sends it to the fire control system, which determines the real-time temperature of the entire battery pack.

[0050] When the temperature of the whole pack of used batteries meets the first set condition, the lifting and puncturing mechanism is controlled to puncture the outer shell of the whole pack of used batteries; at the same time, the fire-fighting equipment is controlled to start to perform the first-level fire-fighting; the first-level fire-fighting is to control the first valve of the fire-fighting equipment 7 to open, keep the second valve 8 and the third valve 9 closed, and the first equipment 11 sprays the fire-extinguishing agent through the second fire-fighting pipe 6 and the first fire-fighting pipe 5 to reach the whole pack of used batteries 4 to extinguish the fire and reduce the temperature.

[0051] After the first level firefighting is over, if the temperature of the whole battery pack continues to rise after the second set time and the rising rate is greater than the second set rate, the firefighting equipment is controlled to start the second level firefighting; the second level firefighting is to control the second valve 8 of the firefighting equipment to open, keep the first valve 7 and the third valve 9 closed, and the second equipment 12 sprays the firefighting liquid through the second firefighting pipe 6 and the first firefighting pipe 5 to reach the whole battery pack 4 to extinguish the fire and cool down.

[0052] After the second-level firefighting is over, if the temperature of the entire battery pack continues to rise after the third set time and the rising rate is greater than the third set rate, the fire-fighting equipment is controlled to start the third-level fire-fighting; the third-level fire-fighting is to control the third valve 9 of the fire-fighting equipment to open, keep the first valve 7 and the second valve 8 closed, open the fire hydrant 14, and the third equipment 13 sprays fire-fighting water through the second fire-fighting pipe 6 and the first fire-fighting pipe 5 to reach the entire battery pack for fire extinguishing and cooling.

[0053] It should be noted that the first setting condition includes: the temperature of the whole pack of echelon batteries is greater than the set temperature, the temperature rise rate (temperature rise) of the whole pack of echelon batteries is greater than the first set rate, and the duration is greater than the first set time. Among them, the first set time, the second set time, the third set time, the first set rate, the second set rate, and the third set rate are all calibrated according to actual needs.

[0054] In some embodiments, after thermal runaway occurs, the following three levels of fire protection are implemented according to the highest temperature of the entire battery pack:

[0055] 1. Level 1 fire fighting: When the highest temperature of the whole pack of recycled batteries is greater than 60°C and the temperature rise is greater than 2°C / min, and the condition is not eliminated after repeated confirmation within 2 seconds, it is determined that thermal runaway has occurred. At this time, the first valve 7 is opened, the second valve 8 and the third valve 9 are closed, and the driving device 16 is started at the same time, and the puncture tube 15 is controlled to move forward 4mm to puncture the outer shell of the whole pack of recycled batteries 4, and the first device 11 sprays the fire extinguishing agent heptafluoropropane.

[0056] 2. Secondary fire fighting: After 5 minutes, the temperature of the entire battery pack continues to rise, and the temperature rise is greater than 1°C / min. The first valve 7 and the third valve 9 are closed, the second valve 8 is opened, and the second device 12 sprays fire fighting liquid (a mixed solution of water and ethylene glycol) to submerge the battery cluster.

[0057] 3. Level 3 fire fighting: After 30 minutes, the temperature of the whole battery pack continues to rise, and the temperature rise is greater than 1°C / min. Close the first valve 7 and the second valve 8, open the third valve 9, open the external fire hydrant 14, and flood the battery compartment. At this time, due to the effect of the high-temperature gas in the compartment, the ice in the fire fighting pipe has been eliminated, and the fire fighting water can play a good role. If the fire fighting water continues to freeze, it can be connected to the fire fighting water of the fire fighting truck.

[0058] It should be noted that, when thermal runaway occurs, the present invention can prevent the spread of thermal runaway through three-level fire protection, effectively reducing the property losses caused by thermal runaway.

[0059] Level 1 firefighting: When a single battery pack experiences thermal runaway, the lifting and puncturing mechanism will be activated, and the carbide steel tube will be ejected by the hydraulic cylinder, puncturing the outer shell of the entire battery pack. The connecting pipe will spray perfluorohexanone into the entire battery pack, achieving the fire extinguishing level of the battery pack cluster. Since the entire battery pack is only destroyed by the lifting and puncturing mechanism after thermal runaway occurs, it does not need to be destroyed during use, and it does not affect other uses of the battery pack.

[0060] Secondary fire protection: immersion antifreeze. Antifreeze is a mixed solution of 55% ethylene glycol and 45% water. Its freezing point is -40°C. In most energy storage scenarios, it is difficult to freeze in winter. After thermal runaway occurs, after the first-level fire protection is completed, if the battery temperature still rises, the second-level fire protection is activated, and the original pipeline is used to fill the failed battery pack with antifreeze to quickly reduce the temperature of the thermal runaway battery and control the runaway battery cell.

[0061] Level 3 firefighting: After thermal runaway occurs, when the first and second level firefighting have taken effect and the on-site personnel arrive but the fire is still not under effective control, activate the third level firefighting and pour fire water into all battery packs to control the spread of the fire.

[0062] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field.

Claims

1. A fire-fighting energy storage system for cabins, characterized in that: Including battery compartment and control compartment, The battery compartment is provided with a plurality of battery packs, a plurality of temperature detection devices, a plurality of jacking and puncturing structures and a first fire-fighting pipe, wherein the plurality of temperature detection devices respectively detect the temperatures of the plurality of battery packs, the jacking and puncturing structures are in contact with the outer shell of the battery pack, and the control end of the jacking and puncturing structure is connected with the control end of the fire-fighting control system, and when the fire-fighting control system controls the jacking and puncturing structure to puncture the outer shell of the battery pack, the first fire-fighting pipe is connected with the inside of the battery pack; The control cabin is equipped with fire-fighting equipment, a fire-fighting control system and a battery control system. The fire-fighting equipment is connected to the first fire-fighting pipe through a second fire-fighting pipe. The fire-fighting control system is used to determine whether to control the fire-fighting equipment to start for fire-fighting according to the temperature of the whole pack of used batteries; the battery control system is used to control the operation of several whole packs of used batteries.

2. The fire-fighting energy storage system for cabins according to claim 1 is characterized in that: The fire-fighting equipment includes a first device, a second device and a third device. A first valve, a second valve and a third valve are respectively provided on a second fire-fighting pipeline connected to the first device, the second device and the third device. The control end of the fire-fighting control system is respectively connected to the control ends of the first valve, the second valve and the third valve.

3. The fire-fighting energy storage system for cabins according to claim 1 is characterized in that: The lifting and puncturing mechanism includes a connecting pipe, a driving device and a puncturing tube. One end of the connecting pipe is in contact with the outer shell of the whole battery pack, and the connecting pipe is connected to the first fire-fighting pipe. One end of the puncturing tube passes through the connecting pipe and the other end is located inside the connecting pipe. The other end of the puncturing tube is connected to the driving device. When the driving device is working, the puncturing tube is driven to move forward in the connecting pipe to puncture the outer shell of the whole battery pack. The first fire-fighting pipe is connected to the inside of the whole battery pack through the connecting pipe.

4. The fire-fighting energy storage system for cabins according to claim 1 is characterized in that: A plurality of partitions are arranged in the battery compartment, and the plurality of secondary battery packs are arranged in the plurality of partitions respectively.

5. The fire-fighting energy storage system for cabins according to claim 4 is characterized in that: A battery tray is provided in the compartment, the whole package of second-life batteries is placed on the battery tray, and a fireproof and heat-insulating coating is provided on the bottom of the tray.

6. A control method for the fire-fighting energy storage system for a cabin as claimed in claim 1, characterized in that: Real-time detection of the temperature of the entire battery pack. When the temperature of the whole pack of used batteries meets the first set condition, the lifting and piercing structure is controlled to pierce the outer shell of the whole pack of used batteries; at the same time, the fire fighting equipment is controlled to start to carry out the first level fire fighting; After the first level firefighting is over, if the temperature of the entire battery pack continues to rise after the second set time and the rising rate is greater than the second set rate, the firefighting equipment is controlled to start the second level firefighting; After the second-level firefighting is over, if the temperature of the entire battery pack continues to rise after the third set time and the rising rate is greater than the third set rate, the fire-fighting equipment is controlled to start the third-level firefighting.

7. The control method according to claim 6, characterized in that: The first set condition includes: the temperature of the whole pack of recycled batteries is greater than the set temperature, the temperature rise rate of the whole pack of recycled batteries is greater than the first set rate, and the duration is greater than the first set time.

8. The control method according to claim 6, characterized in that: The first-level fire protection is to control the first valve of the fire-fighting equipment to be open, keep the second valve and the third valve closed, and the first equipment sprays the fire extinguishing agent through the second fire-fighting pipeline and the first fire-fighting pipeline to reach the entire battery pack for fire extinguishing and cooling.

9. The control method according to claim 6, characterized in that: The secondary fire protection is to control the second valve of the fire protection equipment to open, keep the first valve and the third valve closed, and the second equipment sprays the fire protection liquid through the second fire protection pipeline and the first fire protection pipeline to reach the entire battery pack for fire extinguishing and cooling.

10. The control method according to claim 6, characterized in that: The three-level fire protection is to control the third valve of the fire protection equipment to open, keep the first valve and the second valve closed, and the third equipment sprays fire water through the second fire protection pipe and the first fire protection pipe to reach the entire battery pack for fire extinguishing and cooling.

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