Fire-fighting method and system for electric ship

Abstract

The invention provides an electric ship fire fighting method and system. A first detection subsystem collects first environment data of a battery area, a second detection subsystem collects second environment data of a station control area, and a power management subsystem obtains temperature data of a battery cluster in the battery area; the fire alarm control subsystem judges whether the battery area is abnormal or not based on the first environment data and the temperature data, and sends first abnormal information representing that the battery area is abnormal to the battery swap station control subsystem when the battery area is abnormal; the battery swap station control subsystem judges whether the station control area is abnormal or not based on the second environment data, and sends second abnormal information representing that the station control area is abnormal to the fire alarm control subsystem when the station control area is abnormal; and the fire extinguishing subsystem performs fire extinguishing operation based on abnormity when the battery area and / or the station control area are / is abnormal. According to the invention, different fire control can be carried out on the battery area and the station control area in the ship battery changing cabin, so that the battery pack can be prevented from being damaged in the fire control process.

Description

Technical Field

[0001] The present invention relates to the technical field of fire safety, and in particular to a fire fighting method and system for an electric ship. Background Art

[0002] As an emerging environmentally friendly means of transportation, electric ships have the advantages of low noise and low emissions. However, electric ships involve a large number of batteries and electrical equipment during use, and may face the risk of fires caused by battery overheating, short circuits, etc. Existing ship fire fighting systems are mostly based on traditional fire extinguishing equipment, and have not yet been optimized for the special fire fighting needs of electric ships. Especially when there are dense batteries and electrical equipment in the ship's battery exchange cabin, how to effectively detect and extinguish fires remains an urgent problem to be solved. The current fire fighting solutions are unable to differentiate between fire fighting control for the battery area and the station control area (non-battery area) in the ship's battery exchange cabin, which can easily cause damage to the battery pack during the fire fighting control process. Summary of the invention

[0003] In view of this, an object of the present invention is to provide an electric ship fire fighting method and system to alleviate the above-mentioned problems existing in the related art.

[0004] In a first aspect, an embodiment of the present invention provides an electric ship fire fighting method, which is applied to an electric ship fire fighting system, wherein the electric ship fire fighting system comprises a first detection subsystem, a second detection subsystem, a fire alarm control subsystem, a battery swap station control subsystem, a power management subsystem and a fire extinguishing subsystem, wherein the first detection subsystem is located in a battery area of ​​a battery swap compartment of the electric ship, the second detection subsystem is located in a station control area of ​​the battery swap compartment, the power management subsystem is respectively connected to the fire alarm control subsystem, the battery swap station control subsystem, the fire extinguishing subsystem and a battery cluster in the battery area, the fire alarm control subsystem is respectively connected to the first detection subsystem, the second detection subsystem, the fire extinguishing subsystem and the battery swap station control subsystem, and the battery swap station control subsystem is respectively connected to the first detection subsystem, the second detection subsystem and the fire extinguishing subsystem; the electric ship fire fighting method comprises: the first detection subsystem collects first environmental data of the battery area, the second detection subsystem collects second environmental data of the station control area, the power management ... The management subsystem obtains the temperature data of the battery cluster in the battery area; wherein the first environmental data represents at least one of the combustible gas concentration, smoke concentration and temperature of the battery area, and the second environmental data represents at least one of the combustible gas concentration, smoke concentration and temperature of the station control area; the fire alarm control subsystem determines whether the battery area is abnormal based on the first environmental data and the temperature data, and sends the first abnormal information representing the abnormality of the battery area to the battery swap station control subsystem when the battery area is abnormal; wherein the battery area abnormality includes that the first environmental data meets a preset abnormal condition and / or the temperature data meets a preset temperature condition; the battery swap station control subsystem determines whether the station control area is abnormal based on the second environmental data, and sends the second abnormal information representing the abnormality of the station control area to the fire alarm control subsystem when the station control area is abnormal; wherein the station control area abnormality includes that the second environmental data meets the preset abnormal condition; the fire extinguishing subsystem performs fire fighting operations based on the abnormality when the battery area and / or the station control area are abnormal.

[0005] In a second aspect, an embodiment of the present invention further provides an electric ship fire fighting system, the electric ship fire fighting system comprising a first detection subsystem, a second detection subsystem, a fire alarm control subsystem, a battery swap station control subsystem, a power management subsystem and a fire extinguishing subsystem, the first detection subsystem being located in the battery area of ​​the battery swap compartment of the electric ship, the second detection subsystem being located in the station control area of ​​the battery swap compartment, the power management subsystem being respectively connected to the fire alarm control subsystem, the battery swap station control subsystem, the fire extinguishing subsystem and the battery cluster in the battery area, the fire alarm control subsystem being respectively connected to the first detection subsystem, the second detection subsystem, the fire extinguishing subsystem and the battery swap station control subsystem, the battery swap station control subsystem being respectively connected to the first detection subsystem, the second detection subsystem and the fire extinguishing subsystem; the first detection subsystem is used to collect first environmental data of the battery area, the second detection subsystem is used to collect second environmental data of the station control area, and the power management subsystem is used to obtain the battery cluster in the battery area temperature data; wherein, the first environmental data represents at least one of the combustible gas concentration, smoke concentration and temperature of the battery area, and the second environmental data represents at least one of the combustible gas concentration, smoke concentration and temperature of the station control area; the fire alarm control subsystem is used to determine whether the battery area is abnormal based on the first environmental data and the temperature data, and send the first abnormal information representing the abnormality of the battery area to the battery swap station control subsystem when the battery area is abnormal; wherein, the battery area abnormality includes that the first environmental data meets the preset abnormal condition and / or the temperature data meets the preset temperature condition; the battery swap station control subsystem is used to determine whether the station control area is abnormal based on the second environmental data, and send the second abnormal information representing the abnormality of the station control area to the fire alarm control subsystem when the station control area is abnormal; wherein, the station control area abnormality includes that the second environmental data meets the preset abnormal condition; the fire extinguishing subsystem is used to perform fire fighting operations based on the abnormality when the battery area and / or the station control area are abnormal.

[0006] An electric ship fire fighting method and system provided by an embodiment of the present invention comprises: a first detection subsystem collects first environmental data of the battery area, a second detection subsystem collects second environmental data of the station control area, and a power management subsystem obtains temperature data of the battery cluster in the battery area; a fire alarm control subsystem determines whether the battery area is abnormal based on the first environmental data and temperature data, and sends first abnormal information indicating abnormality of the battery area to the power exchange station control subsystem when the battery area is abnormal; the power exchange station control subsystem determines whether the station control area is abnormal based on the second environmental data, and sends second abnormal information indicating abnormality of the station control area to the fire alarm control subsystem when the station control area is abnormal; and a fire extinguishing subsystem performs fire fighting operations based on abnormalities when the battery area and / or the station control area are abnormal. By adopting the above-mentioned technology, fire fighting control can be performed differently for the battery area and the station control area in the ship's power exchange cabin, thereby facilitating the avoidance of damage to the battery pack during the fire fighting control process.

[0007] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0008] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0010] Figure 1 This is a schematic diagram of the structure of an electric ship fire fighting system in an embodiment of the present invention;

[0011] Figure 2 A schematic diagram of a flow chart of an electric ship fire-fighting method in an embodiment of the present invention;

[0012] Figure 3 This is a structural example diagram of an electric ship fire fighting system in an embodiment of the present invention;

[0013] Figure 4 The following is an example diagram of the working process of an electric ship fire fighting system in an embodiment of the present invention. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described in combination with the embodiments below. Obviously, the described embodiments are 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.

[0015] See also Figure 1 As shown, the electric ship fire protection system may include a first detection subsystem 100, a second detection subsystem 200, a fire alarm control subsystem 300, a battery swap station control subsystem 400, a power management subsystem 500 and a fire extinguishing subsystem 600. The first detection subsystem 100 is located in the battery area 700 of the battery swap compartment of the electric ship, the second detection subsystem 200 is located in the station control area 800 of the battery swap compartment, the power management subsystem 500 is respectively connected to the fire alarm control subsystem 300, the battery swap station control subsystem 400, the fire extinguishing subsystem 600 and the battery cluster 900 in the battery area 700, the fire alarm control subsystem 300 is respectively connected to the first detection subsystem 100, the second detection subsystem 200, the fire extinguishing subsystem 600 and the battery swap station control subsystem 400, and the battery swap station control subsystem 400 is respectively connected to the first detection subsystem 100, the second detection subsystem 200 and the fire extinguishing subsystem 600.

[0016] Electric ship fire fighting methods can be applied to electric ship fire fighting systems, see Figure 2 As shown, the electric ship fire fighting method may include the following steps:

[0017] Step S201 , the first detection subsystem 100 collects first environmental data of the battery area 700 , the second detection subsystem 200 collects second environmental data of the station control area 800 , and the power management subsystem 500 obtains temperature data of the battery cluster 900 in the battery area 700 .

[0018] Among them, the first environmental data can represent at least one of the combustible gas concentration, smoke concentration and temperature of the battery area 700, and the second environmental data can represent at least one of the combustible gas concentration, smoke concentration and temperature of the station control area 800.

[0019] In step S202 , the fire alarm control subsystem 300 determines whether the battery area 700 is abnormal based on the first environmental data and the temperature data, and sends first abnormal information indicating the abnormality of the battery area 700 to the battery swap station control subsystem 400 when the battery area 700 is abnormal.

[0020] The abnormality of the battery area 700 may include that the first environmental data meets a preset abnormal condition and / or the temperature data meets a preset temperature condition.

[0021] Step S203, the battery swap station control subsystem 400 determines whether the station control area 800 is abnormal based on the second environmental data, and sends second abnormal information indicating the abnormality of the station control area 800 to the fire alarm control subsystem 300 when the station control area 800 is abnormal.

[0022] Among them, the abnormality of the station control area 800 may include that the second environmental data meets the preset abnormal condition.

[0023] Step S204 , the fire extinguishing subsystem 600 performs fire fighting operations based on the abnormality when the battery area 700 and / or the station control area 800 is abnormal.

[0024] An electric ship fire fighting method provided by an embodiment of the present invention comprises the following steps: a first detection subsystem collects first environmental data of a battery area, a second detection subsystem collects second environmental data of a station control area, and a power management subsystem obtains temperature data of a battery cluster in the battery area; a fire alarm control subsystem determines whether the battery area is abnormal based on the first environmental data and the temperature data, and sends first abnormal information indicating abnormality of the battery area to the power exchange station control subsystem when the battery area is abnormal; the power exchange station control subsystem determines whether the station control area is abnormal based on the second environmental data, and sends second abnormal information indicating abnormality of the station control area to the fire alarm control subsystem when the station control area is abnormal; and a fire extinguishing subsystem performs fire fighting operations based on abnormalities when the battery area and / or the station control area are abnormal. By adopting the above-mentioned technology, fire fighting control can be performed differently for the battery area and the station control area in the ship's power exchange cabin, thereby facilitating the avoidance of damage to the battery pack during the fire fighting control process.

[0025] As a possible implementation, see Figure 1 As shown, the above-mentioned electric ship fire fighting method may also include:

[0026] Step 1, the fire alarm control subsystem 300 detects whether the first detection subsystem 100 is normal, so that when the first detection subsystem 100 is normal, the fire alarm control subsystem 300 determines whether the battery area 700 is abnormal based on the first environment data and the temperature data.

[0027] For example, see Figure 1As shown, the first detection subsystem may include at least two smoke sensors, at least two temperature sensors, and at least two combustible gas sensors located in the battery area 700, and the second detection subsystem may include at least two smoke sensors, at least two temperature sensors, and at least two combustible gas sensors located in the station control area 800. Detecting whether the first detection subsystem 100 is normal may include: comparing the data collected by all smoke sensors in the battery area 700 within a preset first period of time, comparing the data collected by all temperature sensors in the battery area 700 within a preset first period of time, and comparing the data collected by all combustible gas sensors in the battery area within a preset first period of time; determining the error of the data collected by the same sensor in the battery area 700 within the preset first period of time; for each sensor in the battery area 700, judging whether the sensor is normal based on the comparison result and error corresponding to the sensor.

[0028] Step 2, the battery swap station control subsystem 400 detects whether the second detection subsystem 200 is normal, so that when the second detection subsystem 200 is normal, the battery swap station control subsystem 400 determines whether the station control area 800 is abnormal based on the second environmental data.

[0029] Continuing from the previous example, see Figure 1 As shown, detecting whether the second detection subsystem 200 is normal may include: comparing the data collected by all smoke sensors in the station control area 800 within the preset second time period, and comparing the data collected by all temperature sensors in the station control area 800 within the preset second time period, and comparing the data collected by all combustible gas sensors in the station control area 800 within the preset second time period; determining the error of the data collected by the same sensor in the station control area 800 within the preset second time period; for each sensor in the station control area 800, judging whether the sensor is normal based on the comparison result and error corresponding to the sensor.

[0030] As a possible implementation manner, the preset abnormal condition may include a first abnormal condition, a second abnormal condition, a third abnormal condition and a fourth abnormal condition; the satisfying of the preset abnormal condition may include satisfying at least one of the first abnormal condition, the second abnormal condition, the third abnormal condition and the fourth abnormal condition;

[0031] The first abnormal condition may include at least one of the following: the combustible gas concentration is not less than the first concentration threshold and less than the third concentration threshold, the smoke concentration is not less than the second concentration threshold and less than the fourth concentration threshold; wherein the first concentration threshold is less than the third concentration threshold, and the second concentration threshold is less than the fourth concentration threshold;

[0032] The second abnormal condition may include at least one of the following: the combustible gas concentration is not less than the third concentration threshold and less than the fifth concentration threshold, the smoke concentration is not less than the fourth concentration threshold and less than the sixth concentration threshold, and the temperature is not less than the first temperature threshold and less than the second temperature threshold; wherein the third concentration threshold is less than the fifth concentration threshold, the fourth concentration threshold is less than the sixth concentration threshold, and the first temperature threshold is less than the second temperature threshold;

[0033] The third abnormal condition may include at least one of the following: the combustible gas concentration is not less than the fifth concentration threshold and less than the seventh concentration threshold, the smoke concentration is not less than the sixth concentration threshold and less than the eighth concentration threshold, and the temperature is not less than the second temperature threshold and less than the third temperature threshold; wherein the fifth concentration threshold is less than the seventh concentration threshold, the sixth concentration threshold is less than the eighth concentration threshold, and the second temperature threshold is less than the third temperature threshold;

[0034] The fourth abnormal condition may include at least one of the following: the combustible gas concentration is not less than the seventh concentration threshold, the smoke concentration is not less than the eighth concentration threshold, the temperature is not less than the third temperature threshold, the temperature is not less than the second temperature threshold and the temperature increase rate is greater than the preset temperature increase rate threshold;

[0035] The above-mentioned satisfying the preset temperature condition may include: the temperature value corresponding to the temperature data is not less than the second temperature threshold and less than the third temperature threshold, and / or the temperature value corresponding to the temperature data is not less than the third temperature threshold.

[0036] As a possible implementation, see Figure 1 and Figure 2 As shown, the above step S204 (i.e. the fire extinguishing subsystem 600 performs fire fighting operations based on abnormalities when the battery area 700 and / or the station control area 800 are abnormal) may include:

[0037] Step A1: if the first environmental data and / or the second environmental data meet the first abnormal condition, the first frequency at which the first detection subsystem collects the first environmental data and the second frequency at which the second detection subsystem collects the second environmental data are increased by preset amplitudes.

[0038] As a possible implementation, see Figures 1 to 3 As shown, the fire extinguishing subsystem 600 may include an audible and visual alarm device 601, an exhaust device 602, a deflation indicator light 603, a first fire extinguishing device 604, and a second fire extinguishing device 605. The first fire extinguishing device 604 is located in the battery area 700, and the second fire extinguishing device 605 is located in the station control area 800. Based on this, the above step S204 (i.e., the fire extinguishing subsystem 600 performs a fire fighting operation based on an abnormality when the battery area 700 and / or the station control area 800 is abnormal) may also include:

[0039] Step A2: If the first environmental data and / or the second environmental data meet the second abnormal condition, the exhaust device 602 is started to exhaust air, and the sound and light alarm device 601 is started to sound and light alarm.

[0040] Step A3, if the first environmental data and / or the second environmental data meets the third abnormal condition, or the temperature value corresponding to the temperature data is not less than the second temperature threshold and less than the third temperature threshold, the alarm area is determined based on the respective identification information of the first detection subsystem 100 and the second detection subsystem 200; if the alarm area is the station control area 800, the deflation indicator light 603 is started, and the sound and light alarm device 601 is started for sound and light alarm, and the second fire extinguishing device 605 is started for fire extinguishing; if the alarm area is the battery area 700, the deflation indicator light 603 is started, and the sound and light alarm device 601 is started for sound and light alarm, and the first fire extinguishing device 604 is started for fire extinguishing.

[0041] Continuing with the previous example, the identification information may include the ID of each sensor corresponding to the area where it is located (battery area 700 or station control area 800); based on this, determining the alarm area based on the identification information of the first detection subsystem 100 and the second detection subsystem 200 may include: obtaining the target ID corresponding to the target sensor whose collected data (i.e., the first environmental data and / or the second environmental data) meets the third abnormal condition; if the target ID represents the station control area 800, then determining the alarm area to be the station control area 800; if the target ID represents the battery area 700, then determining the alarm area to be the battery area 700.

[0042] As a possible implementation, see Figures 1 to 3 As shown, the fire extinguishing subsystem 600 may further include a station control robot 606 and an emergency fire water pool 607; based on this, the above step S204 (i.e., the fire extinguishing subsystem 600 performs a fire fighting operation based on an abnormality when the battery area 700 and / or the station control area 800 is abnormal) may further include:

[0043] Step A4, if the first environmental data and / or the second environmental data meets the fourth abnormal condition, or the temperature value corresponding to the temperature data is not less than the third temperature threshold, the battery pack is determined to be in thermal runaway and the station control robot 606 is started. The station control robot 606 moves the battery pack in thermal runaway to the emergency fire water pool 607 for water immersion to extinguish the fire.

[0044] As a possible implementation, see Figures 1 to 3 As shown, the fire extinguishing subsystem 600 may further include a third fire extinguishing device 608; based on this, the above step S204 (i.e., the fire extinguishing subsystem 600 performs a fire fighting operation based on an abnormality when the battery area 700 and / or the station control area 800 is abnormal) may further include:

[0045] Step A5, if the first environmental data and / or the second environmental data meets the fourth abnormal condition, or the temperature value corresponding to the temperature data is not less than the third temperature threshold, the battery pack is determined to be in thermal runaway, the deflation indicator light 603 is activated, the sound and light alarm device 601 is activated for sound and light alarm, and the third fire extinguishing device 608 is activated to extinguish the battery pack in thermal runaway.

[0046] As a possible implementation, see Figures 1 to 3 As shown, the fire extinguishing subsystem 600 may further include an alarm start button 609; based on this, the above step S204 (i.e., the fire extinguishing subsystem 600 performs a fire fighting operation based on an abnormality when the battery area 700 and / or the station control area 800 is abnormal) may further include:

[0047] Step A6, in response to the pressing operation of the alarm start button 609, the sound and light alarm device 601 is started to sound and light alarm.

[0048] By adopting the operation mode of step A6, relevant personnel can activate the sound and light alarm device 601 to sound and light alarm by pressing the alarm start button 609 according to actual conditions, thereby improving the flexibility of the sound and light alarm.

[0049] As a possible implementation, see Figures 1 to 3 As shown, the fire extinguishing subsystem 600 may further include a fire display panel 610; based on this, the above step S204 (i.e., the fire extinguishing subsystem 600 performs fire fighting operations based on abnormalities when the battery area 700 and / or the station control area 800 are abnormal) may further include:

[0050] Step A7, if the first environmental data and / or the second environmental data meets at least one of the first abnormal condition, the second abnormal condition, the third abnormal condition and the fourth abnormal condition, or the temperature data meets the preset temperature condition, the fire display panel 610 is started to display the abnormal triggering data, so that relevant personnel can intuitively know which data triggers the abnormality based on the content displayed by the fire display panel 610.

[0051] In order to facilitate the understanding of the present invention, the above-mentioned electric ship fire-fighting system and the above-mentioned electric ship fire-fighting method are exemplarily described as follows by taking a specific application as an example.

[0052] See also Figure 3As shown, the electric ship fire protection system mainly consists of a fire alarm controller 301, a power exchange station controller 401, a PMS (Power Management System) 501, four combustible gas detection probes (i.e., the first combustible gas detection probe 103 and the second combustible gas detection probe 106 located in the battery area 700 and the third combustible gas detection probe 203 and the fourth combustible gas detection probe 206 located in the station control area 800), four smoke sensors (i.e., the first smoke sensor 101 and the second smoke sensor 104 located in the battery area 700 and the third smoke sensor 201 and the fourth smoke sensor 204 located in the station control area 800), four temperature sensors (i.e., the first and second smoke sensors 101 and 104 located in the battery area 700 and the third and fourth smoke sensors 201 and 204 located in the station control area 800), and four temperature sensors (i.e., the first and second smoke sensors 101 and 104 located in the battery area 700 and the third and fourth smoke sensors 201 and 204 located in the station control area 800). The PMS consists of a first temperature sensor 102 and a second temperature sensor 105 in the battery area 700, and a third temperature sensor 202 and a fourth temperature sensor 205 in the station control area 800), a start alarm button 609, an audible and visual alarm device 601, a deflation indicator light 603, a first fire extinguishing device 604 (using a heptafluoropropane gas fire extinguishing device located in the battery area 700), a second fire extinguishing device 605 (using a heptafluoropropane gas fire extinguishing device located in the station control area 800), an exhaust device 602, a station control robot 606, an emergency fire water pool 607, and a third fire extinguishing device 608. PMS 501 is respectively connected to the fire alarm controller 301, the battery swap station controller 401, the start alarm button 609, the sound and light alarm device 601, the deflation indicator light 603, the first fire extinguishing device 604, the second fire extinguishing device 605, the exhaust device 602, the station control robot 606, the emergency fire water pool 607, the third fire extinguishing device 608, the fire display panel 610 and the battery cluster 900 in the battery area 700, and the fire alarm controller 301 is respectively connected to the first combustible gas detection probe 103, the third combustible gas detection probe 203, the first smoke sensor 101, the third smoke sensor 201, the first temperature sensor 102, the third temperature sensor 202, the start alarm button 609, the sound and light alarm device 601, the deflation indicator light 603, the first fire extinguishing device 604, the second fire extinguishing device 605, the exhaust device 602, the station control robot 606, the emergency fire water pool 607, the third fire extinguishing device 608, the fire display panel 610 and the battery cluster 900 in the battery area 700. The first fire extinguishing device 604, the second fire extinguishing device 605, the exhaust device 602, the station control robot 606, the emergency fire water pool 607, the third fire extinguishing device 608, the fire display panel 610 and the battery swap station controller 401 are connected, and the battery swap station controller 401 is respectively connected to the second combustible gas detection probe 106, the fourth combustible gas detection probe 206, the second smoke sensor 104, the fourth smoke sensor 204, the second temperature sensor 105, the fourth temperature sensor 205, the start alarm button 609, the sound and light alarm device 601, the deflation indicator light 603, the first fire extinguishing device 604, the second fire extinguishing device 605, the exhaust device 602, the station control robot 606, the emergency fire water pool 607, the third fire extinguishing device 608 and the fire display panel 610.Among them, twelve sensors are used to monitor the smoke, combustible gases (such as H2, CO, etc.) and temperature in the battery area 700 and the station control area 800 of the battery swap cabin in real time. The fire display panel 610 is used to display the fire alarm information and fault alarm information of the battery swap cabin. The fire alarm controller 301 exchanges data with the battery swap station controller 401 and PMS 501 through CAN, and the battery swap station controller 401 exchanges data with PMS 501 through CAN.

[0053] The fire alarm controller 301 and the battery swap station controller 401 each detect whether the equipment (i.e., smoke sensors, temperature sensors, and combustible gas detection probes) located in the corresponding area are normal; when the fire alarm controller 301 detects that the equipment is abnormal, the fire alarm controller 301 transmits the equipment failure information to the battery swap station controller 401, and the battery swap station controller 401 switches to normal equipment as the main fire alarm monitoring equipment. When the battery swap station controller 401 detects that the equipment is abnormal, the battery swap station controller 401 transmits the equipment failure information to the fire alarm controller 301, and the fire alarm controller 301 switches to normal equipment as the main fire alarm monitoring equipment.

[0054] The fault information of the electric ship fire-fighting system will trigger four levels of alarms, namely level one, level two, level three, and level four, with corresponding alarm values ​​of 1, 2, 3, and 4 respectively.

[0055] Level 1 warning: If data abnormality is found in the sensor, the main controller of the electric ship fire protection system (fire alarm controller 301 or power exchange station controller 401) automatically increases the sensor data sampling frequency by 50%, and transmits relevant information to the power exchange station control system (including the power exchange station controller 401), and does not output alarm information to the outside. The alarm value, state and trigger threshold of the first level warning are shown in Table 1, that is, the first level warning is triggered when it is not lower than the corresponding threshold.

[0056] Table 1 Alarm value, status and trigger threshold of the first-level warning

[0057]

[0058] Secondary warning: When any of the three conditions, namely, the concentration of combustible gas increases to the corresponding threshold, the concentration of smoke increases to the corresponding threshold, and the temperature reaches the corresponding threshold, the secondary warning is reached, and it is judged to be the early smoldering stage of electrical fire, electrolyte leakage accident or early stage of thermal accident, the exhaust device 602 is started, the sound and light alarm device 601 is started, and the fire alarm controller 301 alarms externally. The alarm value, state and trigger threshold of the secondary warning are shown in Table 2, that is, the secondary warning is triggered when it is not lower than the corresponding threshold.

[0059] Table 2 Alarm value, status and trigger threshold of the second-level warning

[0060]

[0061] Level 3 warning - When any one of the three conditions, namely, the concentration of combustible gas rises to the corresponding threshold, the concentration of smoke rises to the corresponding threshold, and the temperature reaches the corresponding threshold, the level 3 warning is reached. The fire alarm controller 301 activates the corresponding HFC-227ea gas fire extinguishing device. At the same time, the fire alarm controller 301 receives the feedback signal of the pressure signaler of the activated HFC-227ea gas fire extinguishing device and turns on the gas discharge indicator 603 outside the protection area to prevent people from entering. The fire alarm controller 301 transmits the alarm information to the battery swap station control system, and determines the specific abnormal battery pack location in combination with the battery compartment temperature sensor data and the battery pack BMS (Battery Management System) battery temperature.

[0062] When the third-level warning is triggered, the following operations are performed:

[0063] ① After the fire alarm controller 301 receives two alarm signals from any battery area in the battery compartment (i.e., the sound and light alarms triggered by the data collected by any two sensors in the battery area), it starts the corresponding HFC-227ea gas fire extinguishing device after a 25-second delay.

[0064] ② After the battery pack BMS determines the thermal runaway risk, it sends a thermal runaway risk signal to the fire alarm controller 301 through the PMS 501, and the fire alarm controller 301 activates the corresponding heptafluoropropane gas fire extinguishing device.

[0065] ③ When the combustible gas concentration and smoke concentration reach the threshold values ​​shown in Table 3 or the temperature reaches the conditions shown in Table 3, the fire alarm controller 301 activates the corresponding heptafluoropropane gas fire extinguishing device.

[0066] Table 3 Alarm value, status and trigger threshold of the third-level warning

[0067]

[0068] Level 4 warning: When any of the following three conditions is met: the concentration of combustible gas rises to the corresponding threshold, the concentration of smoke rises to the corresponding threshold, and the temperature reaches the corresponding threshold, the level 4 warning is reached, and it is judged to be the stage of thermal runaway fire linkage extinguishing. The station control robot 606 moves to the corresponding battery pack position to grab the thermal runaway battery pack and put it into the emergency fire water pool 607. All battery packs are powered off, and the non-explosion-proof electrical equipment in the battery swap cabin is powered off at the same time.

[0069] When the Level 4 warning is triggered, the following operations are performed:

[0070] ① When the combustible gas concentration, smoke concentration, and temperature reach the threshold values ​​shown in Table 4 and last for 10 seconds, it is judged as the thermal runaway fire linkage extinguishing stage.

[0071] ② The battery pack BMS triggers PMS 501 to send the battery thermal runaway information to the battery swap station control system.

[0072] Table 4 Alarm value, status and trigger threshold of the four-level warning

[0073]

[0074] See also Figure 3 and Figure 4 As shown, the electric ship fire fighting method can be carried out according to the following process:

[0075] Step S301, the fire alarm controller 301 is started.

[0076] Step S302: The fire alarm controller 301 detects whether a sensor fails.

[0077] The implementation of step S302 mainly includes the following aspects:

[0078] (1) Redundant configuration: Each area is designed with redundant configurations of multiple sensors. The fire alarm controller 301 automatically compares the data of different sensors in the same period of time. If the data of one sensor is obviously abnormal compared with other sensors in the same area and the sensor data exceeds the normal detection data range, the sensor is determined to be faulty.

[0079] (2) Data consistency analysis: The fire alarm controller 301 and the station control system (including the station controller 401) automatically monitor the sensor data and analyze the trends and changes of the data. Specifically, the data collected by the sensor within 10 seconds is averaged. When the error between the data and the average value exceeds 50%, it is judged as a sensor failure.

[0080] (3) Drift detection: The fire alarm control 301 and station control system automatically and regularly check the drift of sensor readings. When the data error output by the detection sensor under the same environment exceeds 50%, it is determined to be a sensor failure.

[0081] If the fire alarm controller 301 detects that the sensor is normal, step S303 is executed.

[0082] Step S303, the fire alarm controller 301 automatically collects data from the sensor and finds data anomalies.

[0083] When the fire alarm controller 301 and the station control system automatically detect sensor data within the four warning levels, they determine that the data is abnormal. For example, the combustible gas sensor detects CO concentration, H 2 If the (ppm) data is ≥50, it is automatically determined as data abnormal; if the smoke sensor detects smoke VOC(v) ≥10, it is automatically determined as data abnormal; if the temperature sensor detects temperature ≥50°, it is automatically determined as data abnormal.

[0084] Step S304: The control system determines whether the first-level warning is reached through data such as the temperature, smoke concentration, and combustible gas concentration in the battery swap cabin collected by sensors.

[0085] If the first-level warning is reached, step S305 is executed; if the first-level warning is not reached, step S306 is executed.

[0086] Step S305: The control system automatically increases the sensor sampling frequency by 50%.

[0087] Increasing the sensor sampling frequency by 50% can improve data accuracy. Specifically, the increased sampling frequency provides more detailed sensor data points, and the system can more accurately capture rapidly changing signals. Increasing the sensor sampling frequency by 50% can also improve real-time performance. Specifically, a higher sampling frequency helps detect environmental changes more promptly, and the system can respond to fire conditions more quickly and accurately and make more effective changes.

[0088] Step S306, the control system automatically collects data from the sensor, and data anomalies occur.

[0089] Step S307, the control system determines whether the second-level warning is reached through the data such as the temperature, smoke concentration, and combustible gas concentration in the battery swap cabin collected by sensors.

[0090] If the second-level warning is reached, step S308 and step S309 are executed; if the second-level warning is not reached, step S310 is executed.

[0091] Step S308: The control system automatically turns on the sound and light alarm device 601 to sound and light alarm.

[0092] Step S309, the control system automatically turns on the power exchange cabin exhaust device 602 to exhaust air and discharge the combustible gas out of the cabin.

[0093] Step S310, the control system continuously and automatically collects data from the sensor, and data anomalies occur.

[0094] In step S311, the control system determines whether the third-level warning is reached through data such as the temperature, smoke concentration, and combustible gas concentration in the battery swap cabin collected by sensors.

[0095] If the third level warning is reached, step S312 is executed; if the third level warning is not reached, step S321 is executed.

[0096] Step S312: the control system determines the alarm area through the addressable detection sensor.

[0097] When the control system detects abnormal sensor data, the control system can identify and mark the location of the alarm area based on the installation location and identification information of the sensor.

[0098] Each sensor has a separate ID number. For example, the ID of the sensor installed in the battery area 700 of the battery swap cabin is defined as 1X, and the ID of the sensor installed in the station control area 800 is defined as 2X. When the third-level warning is reached, the control system automatically reads the sensor ID number as 1X, and determines that the alarm area is the battery area 700 of the battery swap cabin. When the fixed ID of the sensor is read as 2X, it is determined that the alarm area is the station control area 800 of the battery swap cabin.

[0099] Step S313 , the control system determines whether the alarm area belongs to the station control area 800 through the addressable detection sensor.

[0100] If the alarm area belongs to the station control area 800, execute steps S314 to S316; if the alarm area does not belong to the station control area 800, execute step S317.

[0101] Step S314, the control system automatically turns on the deflation indicator light 603 to remind personnel not to enter.

[0102] Step S315: the control system automatically turns on the sound and light alarm device 601 to give a sound and light alarm.

[0103] Step S316, the control system automatically turns on the heptafluoropropane gas fire extinguishing device in the station control area to extinguish the fire.

[0104] Step S317 : the control system determines whether the alarm area belongs to the battery area 700 through the addressable detection sensor.

[0105] If the warning area belongs to the battery area 700, step S318 to step S320 are executed.

[0106] Step S318: the control system automatically turns on the sound and light alarm device 601 to sound and light alarm.

[0107] Step S319, the control system automatically turns on the deflation indicator light 603 to remind people not to enter.

[0108] Step S320, the control system automatically opens the heptafluoropropane gas fire extinguishing device in the battery area 700 in the battery compartment to extinguish the fire.

[0109] Step S321, the control system continuously and automatically collects data from the sensor, and data anomalies occur.

[0110] In step S322, the control system determines whether the fire alarm reaches the fourth level warning through the data such as the temperature, smoke concentration, and combustible gas concentration in the battery exchange cabin collected by sensors.

[0111] If the warning level reaches level 4, execute step S323.

[0112] Step S323: The control system automatically determines that thermal runaway has occurred in the battery pack.

[0113] Step S324, the control system automatically starts the station control robot 606 in the battery exchange cabin.

[0114] Step S325, the station control robot 606 automatically moves to the location of the thermal runaway battery pack.

[0115] Step S326, the station control robot 606 automatically grabs the thermal runaway battery pack.

[0116] In step S327, the station control robot 606 automatically places the battery pack into the emergency fire water pool 607 to immerse the thermal runaway battery in water to prevent the thermal runaway range of the battery from expanding.

[0117] Step S401 : The BMS of the battery cluster is started, and can detect the temperature change in the battery pack in real time.

[0118] Step S402 : The PMS automatically obtains the temperature data detected by the BMS of the battery cluster.

[0119] Step S403 , the PMS automatically determines whether the temperature data detected by the BMS of the battery cluster is not less than 60° C.

[0120] If the temperature data detected by the BMS of the battery cluster is not less than 60° C., step S311 is executed; if the temperature data detected by the BMS of the battery cluster continues to rise, step S404 is executed.

[0121] Step S404 , the PMS automatically determines whether the temperature data detected by the BMS of the battery cluster is not less than 90° C.

[0122] If the temperature data detected by the BMS of the battery cluster is not less than 60° C., step S323 is executed.

[0123] Step S501, the station control system (including the battery swap station controller 401) is started.

[0124] Step S502: the station control system detects whether a sensor fails.

[0125] The implementation of step S502 is similar to that of step S302, and will not be described in detail.

[0126] The sensor detected by the station control system in step S502 and the sensor detected by the fire alarm controller 301 in step S302 serve as backup for each other.

[0127] If the station control system detects that the sensor is normal, step S503 is executed.

[0128] Step S503: the station control system automatically collects data from the sensor and an abnormal data occurs.

[0129] After executing step S503, execute step S304.

[0130] Based on the above electric ship fire fighting method, the embodiment of the present invention also provides an electric ship fire fighting system, see Figure 1 and Figure 2 As shown, the electric ship fire protection system may include a first detection subsystem 100, a second detection subsystem 200, a fire alarm control subsystem 300, a power exchange station control subsystem 400, a power management subsystem 500 and a fire extinguishing subsystem 600. The first detection subsystem 100 is located in the battery area 700 of the power exchange cabin of the electric ship, the second detection subsystem 200 is located in the station control area 800 of the power exchange cabin, the power management subsystem 500 is respectively connected to the fire alarm control subsystem 300, the power exchange station control subsystem 400, the fire extinguishing subsystem 600 and the battery cluster 900 in the battery area 700, the fire alarm control subsystem 300 is respectively connected to the first detection subsystem 100, the second detection subsystem 200, the fire extinguishing subsystem 600 and the power exchange station control subsystem 400, and the power exchange station control subsystem 400 is respectively connected to the first detection subsystem 100, the second detection subsystem 200 and the fire extinguishing subsystem 600;

[0131] The first detection subsystem 100 may be used to collect first environmental data of the battery area 700, the second detection subsystem 200 may collect second environmental data of the station control area 800, and the power management subsystem 500 may obtain temperature data of the battery cluster 900 in the battery area 700; wherein the first environmental data may represent at least one of the combustible gas concentration, smoke concentration and temperature of the battery area 700, and the second environmental data may represent at least one of the combustible gas concentration, smoke concentration and temperature of the station control area 800;

[0132] The fire alarm control subsystem 300 can be used to determine whether the battery area 700 is abnormal based on the first environmental data and the temperature data, and send the first abnormality information characterizing the abnormality of the battery area 700 to the battery swap station control subsystem 400 when the battery area 700 is abnormal; wherein the abnormality of the battery area 700 may include that the first environmental data meets the preset abnormality condition and / or the temperature data meets the preset temperature condition;

[0133] The power station control subsystem 400 can be used to determine whether the station control area 800 is abnormal based on the second environmental data, and send the second abnormal information characterizing the abnormality of the station control area 800 to the fire alarm control subsystem 300 when the station control area 800 is abnormal; wherein the abnormality of the station control area 800 may include that the second environmental data meets the preset abnormal condition;

[0134] The fire extinguishing subsystem 600 may be used to perform fire fighting operations based on abnormalities when the battery area 700 and / or the station control area 800 are abnormal.

[0135] See also Figure 1 and Figure 2 As shown, the fire alarm control subsystem 300 can also be used to detect whether the first detection subsystem 100 is normal, so that when the first detection subsystem 100 is normal, the fire alarm control subsystem 300 determines whether the battery area 700 is abnormal based on the first environment data and temperature data.

[0136] See also Figure 1 and Figure 2 As shown, the battery swap station control subsystem 400 can also be used to detect whether the second detection subsystem 200 is normal, so that when the second detection subsystem 200 is normal, the battery swap station control subsystem 400 determines whether the station control area 800 is abnormal based on the second environmental data.

[0137] The electric ship fire fighting system provided in the embodiment of the present invention has the same implementation principle and technical effects as those of the aforementioned electric ship fire fighting method embodiment. For the sake of brief description, for matters not mentioned in the system embodiment, reference may be made to the corresponding contents in the aforementioned method embodiment.

[0138] Unless otherwise specifically stated, the relative steps, numerical expressions and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0139] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0140] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0141] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A fire-fighting method for electric ships, characterized in that: The electric ship fire fighting method is applied to the electric ship fire fighting system, and the electric ship fire fighting system includes a first detection subsystem, a second detection subsystem, a fire alarm control subsystem, a power exchange station control subsystem, a power management subsystem and a fire extinguishing subsystem. The first detection subsystem is located in the battery area of ​​the power exchange cabin of the electric ship, and the second detection subsystem is located in the station control area of ​​the power exchange cabin. The power management subsystem is respectively connected to the fire alarm control subsystem, the power exchange station control subsystem, the fire extinguishing subsystem and the battery cluster in the battery area, and the fire alarm control subsystem is respectively connected to the first detection subsystem, the second detection subsystem, the fire extinguishing subsystem and the power exchange station control subsystem, and the power exchange station control subsystem is respectively connected to the first detection subsystem, the second detection subsystem and the fire extinguishing subsystem; The electric ship fire fighting method comprises: The first detection subsystem collects first environmental data of the battery area, the second detection subsystem collects second environmental data of the station control area, and the power management subsystem obtains temperature data of the battery cluster in the battery area; wherein the first environmental data represents at least one of the combustible gas concentration, smoke concentration and temperature of the battery area, and the second environmental data represents at least one of the combustible gas concentration, smoke concentration and temperature of the station control area; The fire alarm control subsystem determines whether the battery area is abnormal based on the first environmental data and the temperature data, and sends first abnormality information characterizing the abnormality of the battery area to the battery swap station control subsystem when the battery area is abnormal; wherein the battery area abnormality includes that the first environmental data meets a preset abnormality condition and / or the temperature data meets a preset temperature condition; The power station control subsystem determines whether the station control area is abnormal based on the second environmental data, and sends second abnormal information indicating the abnormality of the station control area to the fire alarm control subsystem when the station control area is abnormal; wherein the abnormality of the station control area includes that the second environmental data meets the preset abnormal condition; When the battery area and / or the station control area are abnormal, the fire extinguishing subsystem performs a fire fighting operation based on the abnormality.

2. The electric ship fire fighting method according to claim 1, characterized in that: The method further comprises: The fire alarm control subsystem detects whether the first detection subsystem is normal, so that when the first detection subsystem is normal, the fire alarm control subsystem determines whether the battery area is abnormal based on the first environmental data and the temperature data; The battery swap station control subsystem detects whether the second detection subsystem is normal, so that when the second detection subsystem is normal, the battery swap station control subsystem determines whether the station control area is abnormal based on the second environmental data.

3. The electric ship fire fighting method according to claim 2, characterized in that: The preset abnormal condition includes a first abnormal condition, a second abnormal condition, a third abnormal condition and a fourth abnormal condition; the satisfying of the preset abnormal condition includes satisfying at least one of the first abnormal condition, the second abnormal condition, the third abnormal condition and the fourth abnormal condition; Satisfying the first abnormal condition includes at least one of the following: the combustible gas concentration is not less than the first concentration threshold and less than the third concentration threshold, and the smoke concentration is not less than the second concentration threshold and less than the fourth concentration threshold; wherein the first concentration threshold is less than the third concentration threshold, and the second concentration threshold is less than the fourth concentration threshold; Satisfying the second abnormal condition includes at least one of the following: the combustible gas concentration is not less than the third concentration threshold and less than the fifth concentration threshold, the smoke concentration is not less than the fourth concentration threshold and less than the sixth concentration threshold, and the temperature is not less than the first temperature threshold and less than the second temperature threshold; wherein the third concentration threshold is less than the fifth concentration threshold, the fourth concentration threshold is less than the sixth concentration threshold, and the first temperature threshold is less than the second temperature threshold; Satisfying the third abnormal condition includes at least one of the following: the combustible gas concentration is not less than the fifth concentration threshold and less than the seventh concentration threshold, the smoke concentration is not less than the sixth concentration threshold and less than the eighth concentration threshold, and the temperature is not less than the second temperature threshold and less than the third temperature threshold; wherein the fifth concentration threshold is less than the seventh concentration threshold, the sixth concentration threshold is less than the eighth concentration threshold, and the second temperature threshold is less than the third temperature threshold; Satisfying the fourth abnormal condition includes at least one of the following: the combustible gas concentration is not less than the seventh concentration threshold, the smoke concentration is not less than the eighth concentration threshold, the temperature is not less than the third temperature threshold, the temperature is not less than the second temperature threshold and the temperature increase rate is greater than the preset temperature increase rate threshold; Meeting the preset temperature condition includes: the temperature value corresponding to the temperature data is not less than the second temperature threshold and less than the third temperature threshold, and / or the temperature value corresponding to the temperature data is not less than the third temperature threshold.

4. The electric ship fire fighting method according to claim 3, characterized in that: When an abnormality occurs in the battery area and / or the station control area, the fire extinguishing subsystem performs fire fighting operations based on the abnormality, including: if the first environmental data and / or the second environmental data meet the first abnormal condition, increasing the first frequency of the first detection subsystem collecting the first environmental data and the second frequency of the second detection subsystem collecting the second environmental data according to a preset amplitude.

5. The electric ship fire fighting method according to claim 4, characterized in that: The fire extinguishing subsystem includes an audible and visual alarm device, an exhaust device, a deflation indicator light, a first fire extinguishing device and a second fire extinguishing device, wherein the first fire extinguishing device is located in the battery area and the second fire extinguishing device is located in the station control area; The fire extinguishing subsystem performs fire fighting operations based on abnormalities in the battery area and / or the station control area, and further includes: If the first environmental data and / or the second environmental data meets the second abnormal condition, the exhaust device is started to exhaust air, and the sound and light alarm device is started to sound and light alarm; If the first environmental data and / or the second environmental data meets the third abnormal condition, or the temperature value corresponding to the temperature data is not less than the second temperature threshold and less than the third temperature threshold, the alarm area is determined based on the respective identification information of the first detection subsystem and the second detection subsystem; if the alarm area is the station control area, the deflation indicator light is started, the sound and light alarm device is started for sound and light alarm, and the second fire extinguishing device is started for fire extinguishing; if the alarm area is the battery area, the deflation indicator light is started, the sound and light alarm device is started for sound and light alarm, and the first fire extinguishing device is started for fire extinguishing.

6. The electric ship fire fighting method according to claim 5, characterized in that: The fire extinguishing subsystem also includes a station control robot and an emergency fire water pool; when the battery area and / or the station control area are abnormal, the fire extinguishing subsystem performs fire fighting operations based on the abnormalities, and also includes: if the first environmental data and / or the second environmental data meet the fourth abnormal condition, or the temperature value corresponding to the temperature data is not less than the third temperature threshold, it is determined that the battery pack is thermally runaway and the station control robot is started, and the station control robot moves the battery pack in thermal runaway to the emergency fire water pool for water immersion extinguishing.

7. The electric ship fire fighting method according to claim 6, characterized in that: The first detection subsystem includes at least two smoke sensors, at least two temperature sensors, and at least two combustible gas sensors located in the battery area, and the second detection subsystem includes at least two smoke sensors, at least two temperature sensors, and at least two combustible gas sensors located in the station control area; Detecting whether the first detection subsystem is normal includes: comparing data collected by all smoke sensors in the battery area within a preset first time period, comparing data collected by all temperature sensors in the battery area within a preset first time period, and comparing data collected by all combustible gas sensors in the battery area within a preset first time period; determining an error of data collected by the same sensor in the battery area within the preset first time period; for each sensor in the battery area, judging whether the sensor is normal based on the comparison result and error corresponding to the sensor; Detecting whether the second detection subsystem is normal includes: comparing the data collected by all smoke sensors in the station control area within the preset second time period, comparing the data collected by all temperature sensors in the station control area within the preset second time period, and comparing the data collected by all combustible gas sensors in the station control area within the preset second time period; determining the error of the data collected by the same sensor in the station control area within the preset second time period; for each sensor in the station control area, judging whether the sensor is normal based on the comparison result and error corresponding to the sensor.

8. The electric ship fire fighting method according to claim 7, characterized in that: The identification information includes the ID corresponding to each sensor and representing the area where it is located; determining the alarm area based on the identification information of the first detection subsystem and the second detection subsystem, including: obtaining the target ID corresponding to the target sensor whose collected data meets the third abnormal condition; if the target ID represents the station control area, determining that the alarm area is the station control area; if the target ID represents the battery area, determining that the alarm area is the battery area.

9. An electric ship fire fighting system, characterized in that: The electric ship fire fighting system comprises a first detection subsystem, a second detection subsystem, a fire alarm control subsystem, a power exchange station control subsystem, a power management subsystem and a fire extinguishing subsystem. The first detection subsystem is located in the battery area of ​​the power exchange cabin of the electric ship, the second detection subsystem is located in the station control area of ​​the power exchange cabin, the power management subsystem is respectively connected to the fire alarm control subsystem, the power exchange station control subsystem, the fire extinguishing subsystem and the battery cluster in the battery area, the fire alarm control subsystem is respectively connected to the first detection subsystem, the second detection subsystem, the fire extinguishing subsystem and the power exchange station control subsystem, and the power exchange station control subsystem is respectively connected to the first detection subsystem, the second detection subsystem and the fire extinguishing subsystem; The first detection subsystem is used to collect first environmental data of the battery area, the second detection subsystem is used to collect second environmental data of the station control area, and the power management subsystem is used to obtain temperature data of the battery cluster in the battery area; wherein the first environmental data represents at least one of the combustible gas concentration, smoke concentration and temperature of the battery area, and the second environmental data represents at least one of the combustible gas concentration, smoke concentration and temperature of the station control area; The fire alarm control subsystem is used to determine whether the battery area is abnormal based on the first environmental data and the temperature data, and send first abnormality information characterizing the abnormality of the battery area to the battery swap station control subsystem when the battery area is abnormal; wherein the battery area abnormality includes that the first environmental data meets a preset abnormality condition and / or the temperature data meets a preset temperature condition; The power station control subsystem is used to determine whether the station control area is abnormal based on the second environmental data, and send second abnormal information indicating the abnormality of the station control area to the fire alarm control subsystem when the station control area is abnormal; wherein the abnormality of the station control area includes that the second environmental data meets the preset abnormal condition; The fire extinguishing subsystem is used to perform fire fighting operations based on the abnormalities when the battery area and / or the station control area are abnormal.

10. The electric ship fire fighting system according to claim 9, characterized in that: The fire alarm control subsystem is also used to detect whether the first detection subsystem is normal, so that when the first detection subsystem is normal, the fire alarm control subsystem determines whether the battery area is abnormal based on the first environmental data and the temperature data; The battery swap station control subsystem is further used to detect whether the second detection subsystem is normal, so that when the second detection subsystem is normal, the battery swap station control subsystem determines whether the station control area is abnormal based on the second environmental data.

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