Protection device and method for ship battery compartment equipment

Abstract

The invention provides a protection device and method for ship battery compartment equipment, relates to the technical field of electric ships, and aims to solve the technical problems that in the prior art, the concentration of combustible gas cannot be accurately detected in battery compartment protection, and the mode of preventing the concentration of the combustible gas from diffusing is relatively single. An explosion-proof measure is determined based on a plurality of combustible gas concentration values and a first preset threshold value by arranging a monitoring mechanism in each battery box and arranging an exhaust device and a spraying device at the top of each battery box; wherein when the combustible gas concentration value is larger than a first preset threshold value, the exhaust equipment is controlled to be started; and when the concentration values of the multiple combustible gases are all smaller than the first preset threshold value, the exhaust equipment and the spraying equipment are controlled to be started, the electrical safety of the battery compartment is improved, accumulation of the combustible gases is effectively prevented, and the occurrence risk of explosion accidents is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electric ships, and more particularly, to a protection device and method for ship battery compartment equipment. Background Art

[0002] During the operation of electric ships, battery replacement is a key link to ensure the continuous operation of the ships. With the further development of the trend of ship electrification, the demand for battery replacement will continue to increase. As the core component of the battery system, the safety and reliability of the power battery compartment of battery replacement ships are directly related to the overall operation safety of the ships.

[0003] In the prior art, there are the following defects in the protection of electrical equipment in ship battery compartments: due to the small space of the power battery compartment of battery replacement ships, the size of explosion-proof electrical equipment is too large and the cost is too high, which increases the construction cost and operation cost of the ships; most of the combustible gas detection equipment used in ship cabins has low accuracy and cannot accurately detect low-concentration combustible gases, resulting in serious safety accidents caused by leakage of trace amounts of combustible gases; the response time of the combustible gas detection equipment is long and it cannot monitor the concentration change of combustible gases in real time; and the method of preventing the diffusion of combustible gas concentration is relatively single, mainly relying on the ventilation system for gas dilution and emission. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a protection device and method for ship battery compartment equipment to improve the electrical safety of the battery compartment, effectively prevent the accumulation of combustible gas, and reduce the risk of explosion accidents.

[0005] In a first aspect, the present invention provides a protection device for ship battery compartment equipment, including:

[0006] A battery compartment for storing battery boxes, and a plurality of battery boxes are arranged in the battery compartment;

[0007] A monitoring mechanism for collecting the concentration of combustible gas in the battery box, and a monitoring mechanism is arranged in each battery box;

[0008] A gas diffusion mechanism for discharging the combustible gas in the battery compartment, the gas diffusion mechanism includes an exhaust device and a spraying device, and an exhaust device and a spraying device are arranged on each battery box;

[0009] A control mechanism is communicatively connected to the monitoring mechanism, the exhaust device and the spraying device respectively, and the control mechanism is configured to: obtain the concentration of combustible gas collected by a plurality of monitoring mechanisms; determine explosion-proof measures based on a plurality of combustible gas concentration values and a first preset threshold; wherein, when a combustible gas concentration value is greater than the first preset threshold, control the exhaust device to start; when a plurality of combustible gas concentration values are all less than the first preset threshold, control the exhaust device and the spraying device to start.

[0010] Optionally, the device further includes a battery swapping actuator for swapping the battery box;

[0011] The battery swapping actuator is communicatively connected to the control mechanism, and the control mechanism is further configured to:

[0012] Obtain the working state of the battery swapping actuator;

[0013] Determine explosion protection measures based on the working state of the battery swapping actuator and multiple combustible gas concentration values.

[0014] Optionally, the control mechanism is further configured to: when the battery swapping actuator is in a non-working state and a combustible gas concentration value is greater than a first preset threshold, control the power supply of the battery swapping actuator to be in a power-off state;

[0015] When the battery swapping actuator is in a working state and a combustible gas concentration value is greater than a first preset threshold, control the gas diffusion mechanism to start.

[0016] Optionally, the control mechanism is further configured to: when a combustible gas concentration value is greater than a second preset threshold, update the frequency of the monitoring mechanism collecting the combustible gas concentration inside the battery box.

[0017] Optionally, the exhaust device includes: an integrated hood, an exhaust fan, and an air duct; one end of the integrated hood is provided with an opening facing the top surface of the battery box, and the area of the opening is not less than the top area of the battery box. The other end of the integrated hood is communicated with the air duct, and the exhaust fan is arranged inside the air duct;

[0018] The control mechanism is communicatively connected to the exhaust fan, and the control mechanism is configured to control the start and stop of the exhaust fan.

[0019] Optionally, the spraying device includes: a spray head, a water tank, and a spray pump. The spray head is located above the battery box, and the water outlet of the spray head faces the battery box. The spray head is communicated with the water tank through the spray pump;

[0020] The control mechanism is communicatively connected to the spray pump, and the control mechanism is configured to control the start and stop of the spray pump.

[0021] In a second aspect, the present invention further provides a protection method for a ship battery compartment device, which is applied to the control mechanism in the above protection device for a ship battery compartment device. The protection method includes:

[0022] Obtain the combustible gas concentrations collected by multiple monitoring mechanisms;

[0023] Determine explosion protection measures based on multiple combustible gas concentration values and a first preset threshold; wherein, when a combustible gas concentration value is greater than the first preset threshold, control the exhaust device to start; when multiple combustible gas concentration values are all less than the first preset threshold, control the exhaust device and the spraying device to start.

[0024] Optionally, the method further includes:

[0025] Obtaining a combustible gas concentration difference based on the current combustible gas concentration value and a first preset threshold;

[0026] Obtaining an accumulated combustible gas concentration difference based on the historical combustible gas concentration difference;

[0027] Obtaining a combustible gas concentration change rate based on the previous combustible gas concentration difference, the current combustible gas concentration difference, and the period for collecting the combustible gas concentration value;

[0028] Determining the rotational speed of the exhaust fan in the exhaust equipment based on the combustible gas concentration difference, the accumulated combustible gas concentration difference, and the combustible gas concentration change rate.

[0029] Optionally, the method further includes:

[0030] When multiple combustible gas concentration values are all less than a second preset threshold, controlling the exhaust equipment and / or the spraying equipment to stop working.

[0031] Optionally, the method further includes:

[0032] When the battery swapping actuator is in a non-operating state and a combustible gas concentration value is greater than the first preset threshold, controlling the power supply of the battery swapping actuator to be in a power-off state;

[0033] When the battery swapping actuator is in an operating state and a combustible gas concentration value is greater than the first preset threshold, controlling the gas diffusion mechanism to start.

[0034] A protection device and method for a ship battery compartment equipment provided by an embodiment of the present invention determine explosion protection measures based on multiple combustible gas concentration values and a first preset threshold by arranging a monitoring mechanism in each battery box and arranging an exhaust equipment and a spraying equipment on the top of each battery box; wherein, when a combustible gas concentration value is greater than the first preset threshold, controlling the exhaust equipment to start; when multiple combustible gas concentration values are all less than the first preset threshold, controlling the exhaust equipment and the spraying equipment to start, improving the electrical safety of the battery compartment, effectively preventing the accumulation of combustible gas, and reducing the risk of explosion accidents.

[0035] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. Description of the Drawings

[0036] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0037] Figure 1 It shows a schematic structural diagram of a protection device for a ship battery compartment device provided by an embodiment of the present invention;

[0038] Figure 2 It shows a schematic structural diagram of another protection device for a ship battery compartment device provided by an embodiment of the present invention;

[0039] Figure 3 It shows a schematic flow diagram of a protection method for a ship battery compartment device provided by an embodiment of the present invention.

[0040] Main element symbol description: 100 - battery compartment; 110 - battery box; 111 - monitoring mechanism; 210 - integrated cover; 220 - air duct; 230 - exhaust fan; 240 - nozzle. Detailed implementation manners

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention claimed, but only represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0042] Figure 1 It is a schematic structural diagram of a protection device for a ship battery compartment 100 device provided by an embodiment of the present invention. As Figure 1 shown, the protection device at least includes: a battery compartment 100, a detection mechanism, a gas diffusion mechanism, and a control mechanism.

[0043] Among them, the battery compartment 100 is used to store the battery boxes 110, and a plurality of battery boxes 110 are arranged in the battery compartment 100; the monitoring mechanism 111 is used to collect the concentration of combustible gas in the battery box 110, and a monitoring mechanism 111 is arranged in each battery box 110; the gas diffusion mechanism is used to discharge the combustible gas in the battery compartment 100, and the gas diffusion mechanism includes an exhaust device and a spraying device, and an exhaust device and a spraying device are arranged on each battery box 110; the control mechanism is respectively communicatively connected to the monitoring mechanism 111, the exhaust device and the spraying device, and the control mechanism is used for: obtaining the concentration of combustible gas collected by a plurality of monitoring mechanisms 111; determining explosion prevention measures based on a plurality of combustible gas concentration values and a first preset threshold; wherein, when a combustible gas concentration value is greater than the first preset threshold, controlling the exhaust device to start; when a plurality of combustible gas concentration values are all less than the first preset threshold, controlling the exhaust device and the spraying device to start.

[0044] In the embodiment of the present application, at least one battery box 110 is stored in the battery compartment 100, a monitoring mechanism 111 is arranged in each battery box 110 to collect the concentration of combustible gas in the battery box 110, an exhaust device and a spraying device are arranged above each battery box 110, the exhaust device is used to discharge the combustible gas in the battery compartment 100, the spraying device is used to reduce the concentration value of the combustible gas in the battery compartment 100, the monitoring mechanism 111, the exhaust device and the spraying device are respectively communicatively connected to the control mechanism, the control mechanism receives the concentration values of the combustible gas sent by each monitoring mechanism 111, and compares each concentration value of the combustible gas with the first preset threshold. If any concentration value of the combustible gas is greater than the first preset threshold, controlling the exhaust device to process the combustible gas in the battery compartment 100. If any concentration value of the combustible gas is less than the first preset threshold, controlling the exhaust device and the spraying device to process the combustible gas in the battery compartment 100 so that the concentration of the combustible gas in the battery box 110 reaches the safe concentration value. By collecting the concentration of combustible gas in each battery box 110 through the monitoring mechanism 111 in each battery box 110, the density of the collected data and the detection accuracy are improved; according to the concentration value of the combustible gas in the battery compartment 100, different exhaust methods are determined, effectively preventing the accumulation of combustible gas and reducing the risk of explosion accidents.

[0045] In an alternative embodiment, the exhaust device includes an integrated hood 210, an exhaust fan 230 and an air duct 220. One end of the integrated hood 210 is provided with an opening, the opening faces the top surface of the battery box 110, and the area of the opening is not less than the top area of the battery box 110. The other end of the integrated hood 210 is communicated with the air duct 220, and the exhaust fan 230 is arranged in the air duct 220.

[0046] In the embodiment of the present application, as Figure 2As shown, the integrated cover 210 is located above the battery box 110. The opening of the integrated cover 210 faces the top surface of the battery box 110, and the area of the opening is not less than the top area of the battery box 110, so as to output the combustible gas overflowing from the battery box 110 to the outside of the battery compartment 100 through the exhaust fan 230 and the air duct 220. By recovering the combustible gas overflowing from each battery box 110 through each exhaust device, the accumulation of combustible gas is effectively prevented, and the risk of explosion accidents is reduced.

[0047] In an alternative embodiment, the spraying device includes: a spray head 240, a water tank, and a spray pump. The spray head 240 is located above the battery box 110, and the water outlet of the spray head 240 faces the battery box 110. The spray head 240 is communicated with the water tank through the spray pump.

[0048] In the embodiment of the present application, the spray head 240 is located inside the integrated cover 210, and the spray head 240 is located inside the battery compartment, and the water outlet of the spray head 240 faces the top of the battery box 110. The low-concentration sodium hydroxide liquid in the water tank is sprayed onto the outer surface of the battery box 110 through the spray head 240 and the spray pump, so as to reduce the concentration of combustible gas in the battery compartment 100.

[0049] In an alternative embodiment, the monitoring mechanism 111 can adopt a combustible gas detection sensor.

[0050] In an alternative embodiment, the protection device further includes an inflation mechanism for inputting gas into the battery compartment 100 to form a pressure difference between the internal pressure value and the external pressure value of the battery compartment 100, preventing external combustible gas from entering the battery compartment 100 through the exhaust device. Among them, the gas input into the battery compartment 100 by the inflation mechanism can be compressed air or inert gas.

[0051] In an alternative embodiment, the protection device further includes a battery replacement execution mechanism for replacing the battery box 110; the battery replacement execution mechanism is communicatively connected to the control mechanism, and the control mechanism is further configured to: obtain the working state of the battery replacement execution mechanism; determine explosion protection measures based on the working state of the battery replacement execution mechanism and multiple combustible gas concentration values. Among them, when the battery replacement execution mechanism is in a non-working state and a combustible gas concentration value reaches a first preset threshold, the power supply of the battery replacement execution mechanism is controlled to be in a power-off state; when the battery replacement execution mechanism is in a working state and a combustible gas concentration value is greater than the first preset threshold, the gas diffusion mechanism is controlled to start.

[0052] In the embodiment of the present application, when any detected combustible gas concentration value reaches the first preset threshold and the battery replacement actuator does not perform a battery replacement operation on the battery box 110 in the battery compartment 100, the control mechanism controls the power supply of the battery replacement actuator to be in a power-off state; when any detected combustible gas concentration value reaches the first preset threshold and the battery replacement actuator is performing a battery replacement operation on the battery box 110 in the battery compartment 100, the control mechanism controls the exhaust device and / or the spraying device to process the combustible gas in the battery compartment 100. By determining the working state of the battery replacement actuator to determine different explosion protection methods, the normal operation and protection of the battery box 110 in the battery compartment 100 can be ensured, and the cost and the space of the battery compartment 100 can be saved.

[0053] In an alternative embodiment, the control mechanism is further configured to: when a combustible gas concentration value is greater than a second preset threshold, update the frequency at which the monitoring mechanism 111 collects the combustible gas concentration in the battery box 110.

[0054] In the present application, when any combustible gas concentration value is greater than the second preset threshold, the control mechanism increases the frequency of controlling the monitoring mechanism 111 to collect the combustible gas concentration, so as to improve the monitoring accuracy and real-time performance.

[0055] Further, the first preset threshold is 20% of the lower explosion concentration limit, and the second preset threshold is 10% of the lower explosion concentration limit.

[0056] In an alternative embodiment, the control mechanism is further configured to: determine explosion protection measures based on a plurality of combustible gas concentration values and the first preset threshold; wherein, when a combustible gas concentration value is greater than the first preset threshold, control the exhaust device to start; when a plurality of combustible gas concentration values are all less than the first preset threshold, control the exhaust device and the spraying device to start.

[0057] In the embodiment of the present application, when any combustible gas concentration value exceeds 20% of the lower explosion concentration limit, the control mechanism controls the exhaust device to start, so as to output the combustible gas inside the battery compartment to the outside of the battery compartment through the exhaust device; when each combustible gas concentration value is less than 20% of the lower explosion concentration limit, the control mechanism controls the spraying device to start, so as to reduce the combustible gas concentration in the battery box through the exhaust device and the spraying device; wherein, the air extraction volume of the exhaust fan is controlled by the PID control method, which can not only ensure that the combustible gas concentration value is controlled within 20% of the lower explosion concentration limit, but also reduce the energy consumption of the continuous operation of the exhaust fan. The expression of the PID control method is:

[0058] S = K p ×N c +K i ×L c ×T + K d ×V r

[0059] In the formula, S is the speed of the exhaust fan; K p is the response speed coefficient; N c is the concentration difference; K i is the steady-state error elimination coefficient; L c is the sum of the cumulative concentration differences; T is the time for collecting the combustible gas concentration value; K d is the mutation suppression coefficient; V r is the concentration change rate.

[0060] Among them, the response speed coefficient K p is generally 1.5; the steady-state error elimination coefficient K i is generally 0.1; the mutation suppression coefficient is generally 0.3; the concentration difference N is obtained by the difference between the current combustible gas concentration value and 20% of the lower explosion limit concentration; c ; the concentration change rate V r can be obtained by dividing the difference between the previous concentration difference and the current concentration difference by the time for collecting the combustible gas concentration value.

[0061] Further, when reducing the combustible gas concentration value in the battery box 110 through the exhaust device and / or the spraying device, and the combustible gas concentration value in the battery box 110 keeps rising at a speed of 1% while the combustible gas concentration value reaches 100% of the lower explosion limit concentration, the control mechanism automatically cuts off the power supply of other devices in the battery compartment 100 except the exhaust device and the spraying device, and issues an audible and visual alarm to remind the relevant staff to handle it.

[0062] Figure 3 is a schematic flow chart of a protection method for a ship battery compartment device provided by an embodiment of the present invention. As Figure 3 shown, this method is applied to the control mechanism in the protection device of the above-mentioned ship battery compartment device, and this method includes the following steps:

[0063] Step 310, obtaining the combustible gas concentration collected by multiple monitoring mechanisms;

[0064] Step 320, determining explosion protection measures based on multiple said combustible gas concentration values and a first preset threshold; wherein, when one said combustible gas concentration value is greater than the first preset threshold, controlling the exhaust device to start; when multiple said combustible gas concentration values are all less than the first preset threshold, controlling the exhaust device and the spraying device to start.

[0065] In an alternative embodiment, when one said combustible gas concentration value is greater than the first preset threshold and controlling the exhaust device to start, it further includes:

[0066] Obtaining a combustible gas concentration difference based on the current said combustible gas concentration value and the first preset threshold;

[0067] Based on the historical difference in the concentration of combustible gas, obtain the cumulative difference in the concentration of combustible gas;

[0068] Based on the previous difference in the concentration of combustible gas, the current difference in the concentration of combustible gas, and the period for collecting the concentration value of the combustible gas, obtain the change rate of the concentration of combustible gas;

[0069] Based on the difference in the concentration of combustible gas, the cumulative difference in the concentration of combustible gas, and the change rate of the concentration of combustible gas, determine the rotational speed of the exhaust fan in the exhaust equipment.

[0070] In an alternative embodiment, the method further includes:

[0071] When multiple concentration values of the combustible gas are all less than a second preset threshold, control the exhaust equipment and / or the spraying equipment to stop working.

[0072] In an alternative embodiment, the method further includes:

[0073] When the battery swapping actuator is in a non-operating state and one concentration value of the combustible gas is greater than a first preset threshold, then control the power supply of the battery swapping actuator to be in a power-off state;

[0074] When the battery swapping actuator is in an operating state and one concentration value of the combustible gas is greater than a first preset threshold, then control the gas diffusion mechanism to start.

[0075] In the present application, the control mechanism in the protection device of the ship battery compartment equipment performs the explosion-proof process on the battery compartment equipment as follows:

[0076] First, obtain the concentration value of the combustible gas in each battery box collected by the monitoring mechanism and obtain the working state of the battery swapping actuator;

[0077] Second, determine whether each concentration value of the combustible gas exceeds 10% of the lower explosion limit. If so, increase the frequency of collecting the concentration value of the combustible gas by the monitoring mechanism; when any concentration value of the combustible gas exceeds 20% of the lower explosion limit and the battery swapping actuator is in a non-operating state, then cut off the power supply of the battery swapping actuator to make the battery swapping mechanism in a power-off state; when any concentration value of the combustible gas exceeds 20% of the lower explosion limit and the battery swapping actuator is in an operating state, then control the exhaust equipment to start, and determine the air extraction volume of the exhaust fan through the PID control method to reduce the concentration of the combustible gas in the battery box to 20% of the lower explosion limit; wherein, the expression of the PID control method is:

[0078] S = K p ×N c +K i ×L c ×T + Kd ×V r

[0079] where S is the speed of the exhaust fan; K p is the response speed coefficient; N c is the concentration difference; K i is the steady-state error elimination coefficient; L c is the sum of the cumulative concentration differences; T is the time for collecting the concentration value of the combustible gas; K d is the mutation suppression coefficient; V r is the concentration change rate;

[0080] Then, when the concentration values of the combustible gas in each battery box are all lower than 20% of the lower explosion limit concentration, control the spray device to start, and simultaneously reduce the concentration value of the combustible gas in the battery box through the exhaust device and the spray device until the concentration value of the combustible gas in the battery box is less than 10% of the lower explosion limit concentration, and then control the exhaust device and the spray device to stop working.

[0081] Furthermore, when starting the exhaust device and / or the spray device to reduce the concentration value of the combustible gas in the battery box, if the concentration of the combustible gas never decreases and keeps increasing by 1% while the concentration of the combustible gas reaches 100% of the lower explosion limit concentration, then cut off all electrical devices except the exhaust device and the spray device, and simultaneously trigger an audible and visual alarm to remind the relevant staff.

[0082] The method provided by the embodiments of the present application has the same implementation principle and technical effects as those of the foregoing device embodiments. For the sake of brief description, for the parts not mentioned in the method embodiments, reference may be made to the corresponding contents in the foregoing device embodiments.

[0083] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0084] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is 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 a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0085] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0086] Finally, it should be noted that the above embodiments are only specific embodiments of the present invention, used to illustrate the technical solutions of the present invention, rather than limiting it. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed by the present invention can still modify the technical solutions recorded in the foregoing embodiments or can easily think of changes, or make equivalent replacements for some of the technical features; 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. All should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A protection device for a ship battery compartment equipment, characterized in that, Comprising: A battery compartment for storing battery boxes, with a plurality of the battery boxes disposed within the battery compartment; A monitoring mechanism for collecting the concentration of combustible gas within the battery box, with one such monitoring mechanism provided within each battery box; A gas diffusion mechanism for discharging the combustible gas within the battery compartment, the gas diffusion mechanism including an exhaust device and a spraying device, with one exhaust device and one spraying device provided on each battery box; A control mechanism communicatively connected to the monitoring mechanism, the exhaust device, and the spraying device respectively, the control mechanism being configured to: obtain the concentrations of combustible gas collected by the plurality of monitoring mechanisms; determine explosion protection measures based on the plurality of combustible gas concentration values and a first preset threshold; wherein, when one combustible gas concentration value is greater than the first preset threshold, control the exhaust device to start; when all the plurality of combustible gas concentration values are less than the first preset threshold, control the exhaust device and the spraying device to start.

2. The protection device for the ship battery compartment equipment according to claim 1, characterized in that, Further comprising a battery swapping execution mechanism for swapping the battery box; The battery swapping execution mechanism is communicatively connected to the control mechanism, and the control mechanism is further configured to: Obtain the working state of the battery swapping execution mechanism; Determine explosion protection measures based on the working state of the battery swapping execution mechanism and the plurality of combustible gas concentration values.

3. The protection device for the ship battery compartment equipment according to claim 2, characterized in that, The control mechanism is further configured to: when the battery swapping execution mechanism is in a non-working state and one combustible gas concentration value reaches the first preset threshold, then control the power supply of the battery swapping execution mechanism to be in a power-off state; When the battery swapping execution mechanism is in a working state and one combustible gas concentration value is greater than the first preset threshold, then control the gas diffusion mechanism to start.

4. The protection device for a ship battery compartment equipment according to claim 1, characterized in that, The control mechanism is further configured to: when one combustible gas concentration value is greater than a second preset threshold, update the frequency of collecting the concentration of combustible gas within the battery box by the monitoring mechanism.

5. The protection device for the ship battery compartment equipment according to claim 1, characterized in that, The exhaust device includes: an integrated hood, an exhaust fan, and an air duct; one end of the integrated hood is provided with an opening facing the top surface of the battery box, and the area of the opening is not less than the top area of the battery box, the other end of the integrated hood is communicated with the air duct, and the exhaust fan is disposed within the air duct; The control mechanism is communicatively connected to the exhaust fan, and the control mechanism is configured to control the start and stop of the exhaust fan.

6. The protection device for the ship battery compartment equipment according to claim 1, characterized in that, The spraying device includes: a nozzle, a water tank, and a spraying pump, the nozzle is located above the battery box, and the water outlet of the nozzle faces the battery box, and the nozzle is communicated with the water tank through the spraying pump; The control mechanism is communicatively connected to the spraying pump, and the control mechanism is configured to control the start and stop of the spraying pump.

7. A protection method for ship battery compartment equipment, characterized in that, A control mechanism applied to a protection device for a ship battery compartment device as described in any one of claims 1 to 6, the protection method including: Obtain the concentrations of combustible gas collected by a plurality of monitoring mechanisms; Determine explosion protection measures based on the plurality of combustible gas concentration values and a first preset threshold; wherein, when one combustible gas concentration value is greater than the first preset threshold, control the exhaust device to start; when all the plurality of combustible gas concentration values are less than the first preset threshold, control the exhaust device and the spraying device to start.

8. The protection method of the ship battery compartment equipment according to claim 7, characterized in that, When the concentration value of a combustible gas is greater than a first preset threshold, controlling the exhaust equipment to start, further including: Based on the current concentration value of the combustible gas and the first preset threshold, obtaining a difference in combustible gas concentration; Based on the historical difference in combustible gas concentration, obtaining an accumulated difference in combustible gas concentration; Based on the previous difference in combustible gas concentration, the current difference in combustible gas concentration, and the period for collecting the concentration value of the combustible gas, obtaining a change rate of combustible gas concentration; Based on the difference in combustible gas concentration, the accumulated difference in combustible gas concentration, and the change rate of combustible gas concentration, determining the rotational speed of the exhaust fan in the exhaust equipment.

9. The protection method of the ship battery compartment equipment according to claim 7, characterized in that Further including: When the concentration values of multiple combustible gases are all less than a second preset threshold, controlling the exhaust equipment and / or the spraying equipment to stop working.

10. The protection method of the ship battery compartment equipment according to claim 7, characterized in that, Further including: When the battery swapping actuator is in a non-operating state and the concentration value of a combustible gas is greater than the first preset threshold, controlling the power supply of the battery swapping actuator to be in a power-off state; When the battery swapping actuator is in an operating state and the concentration value of a combustible gas is greater than the first preset threshold, controlling the gas diffusion mechanism to start.

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